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Geographic Clusters Show Uneven Cancer Screening in the US
Geographic Clusters Show Uneven Cancer Screening in the US
TOPLINE:
An analysis of 3142 US counties revealed that county-level screening for breast, cervical, and colorectal cancer increased overall between 1997 and 2019; however, despite the reduced geographic variation, persistently high-screening clusters remained in the Northeast, whereas persistently low-screening clusters remained in the Southwest.
METHODOLOGY:
- Cancer screening reduces mortality. Despite guideline recommendation, the uptake of breast, cervical, and colorectal cancer screening in the US falls short of national goals and varies across sociodemographic groups. To date, only a few studies have examined geographic and temporal patterns of screening.
- To address this gap, researchers conducted a cross-sectional study using an ecological panel design to analyze county-level screening prevalence across 3142 US mainland counties from 1997 to 2019, deriving prevalence estimates from Behavioral Risk Factor Surveillance System (BRFSS) and National Health Interview Survey (NHIS) data over 3- to 5-year periods.
- Spatial autocorrelation analyses, including Global Moran I and the bivariate local indicator of spatial autocorrelation, were performed to assess geographic clusters of cancer screening within each period. Four types of local geographic clusters of county-level cancer screening were identified: counties with persistently high screening rates, counties with persistently low screening rates, counties in which screening rates decreased from high to low, and counties in which screening rates increased from low to high.
- Screening prevalence was compared across multiple time windows for different modalities (mammography, a Papanicolaou test, colonoscopy, colorectal cancer test, endoscopy, and a fecal occult blood test [FOBT]). Overall, 3101 counties were analyzed for mammography and the Papanicolaou test, 3107 counties for colonoscopy, 3100 counties for colorectal cancer test, 3089 counties for endoscopy, and 3090 counties for the FOBT.
TAKEAWAY:
- Overall screening prevalence increased from 1997 to 2019, and global spatial autocorrelation declined over time. For instance, the distribution of mammography screening became 83% more uniform in more recent years (Moran I, 0.57 in 1997-1999 vs 0.10 in 2017-2019). Similarly, Papanicolaou test screening became more uniform in more recent years (Moran I, 0.44 vs. 0.07). These changes indicate reduced geographic heterogeneity.
- Colonoscopy and endoscopy use increased, surpassing a 50% prevalence in many counties for 2010; however, FOBT use declined. Spatial clustering also attenuated, with a 23.4% declined in Moran I for colonoscopy from 2011-2016 to 2017-2019, a 12.3% decline in the colorectal cancer test from 2004-2007 to 2008-2010, and a 14.0% decline for endoscopy from 2004-2007 to 2008-2010.
- Persistently high-/high-screening clusters were concentrated in the Northeast for mammography and colorectal cancer screening and in the East for Papanicolaou test screening, whereas persistently low-/low-screening clusters were concentrated in the Southwest for the same modalities.
- Clusters of low- and high-screening counties were more disadvantaged -- with lower socioeconomic status and a higher proportion of non-White residents -- than other cluster types, suggesting some improvement in screening uptake in more disadvantaged areas. Counties with persistently low screening exhibited greater socioeconomic disadvantages -- lower media household income, higher poverty, lower home values, and lower educational attainment -- than those with persistently high screening.
IN PRACTICE:
"This cross-sectional study found that despite secular increases that reduced geographic variation in screening, local clusters of high and low screening persisted in the Northeast and Southwest US, respectively. Future studies could incorporate health care access characteristics to explain why areas of low screening did not catch up to optimize cancer screening practice," the authors wrote.
SOURCE:
The study, led by Pranoti Pradhan, PhD, Harvard T.H. Chan School of Public Health, Boston, was published online in JAMA Network Open.
LIMITATIONS:
The county-level estimates were modeled using BRFSS, NHIS, and US Census data, which might be susceptible to sampling biases despite corrections for nonresponse and noncoverage. Researchers lacked data on specific health systems characteristics that may have directly driven changes in prevalence and were restricted to using screening time intervals available from the Small Area Estimates for Cancer-Relates Measures from the National Cancer Institute, rather than those according to US Preventive Services Task Force guidelines. Additionally, the spatial cluster method was sensitive to county size and arrangement, which may have influenced local cluster detection.
DISCLOSURES:
This research was supported by the T32 Cancer Prevention and Control Funding Fellowship and T32 Cancer Epidemiology Fellowship at the Harvard T.H. Chan School of Public Health. The authors declared having no conflicts of interest.
This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication.
A version of this article first appeared on Medscape.com.
TOPLINE:
An analysis of 3142 US counties revealed that county-level screening for breast, cervical, and colorectal cancer increased overall between 1997 and 2019; however, despite the reduced geographic variation, persistently high-screening clusters remained in the Northeast, whereas persistently low-screening clusters remained in the Southwest.
METHODOLOGY:
- Cancer screening reduces mortality. Despite guideline recommendation, the uptake of breast, cervical, and colorectal cancer screening in the US falls short of national goals and varies across sociodemographic groups. To date, only a few studies have examined geographic and temporal patterns of screening.
- To address this gap, researchers conducted a cross-sectional study using an ecological panel design to analyze county-level screening prevalence across 3142 US mainland counties from 1997 to 2019, deriving prevalence estimates from Behavioral Risk Factor Surveillance System (BRFSS) and National Health Interview Survey (NHIS) data over 3- to 5-year periods.
- Spatial autocorrelation analyses, including Global Moran I and the bivariate local indicator of spatial autocorrelation, were performed to assess geographic clusters of cancer screening within each period. Four types of local geographic clusters of county-level cancer screening were identified: counties with persistently high screening rates, counties with persistently low screening rates, counties in which screening rates decreased from high to low, and counties in which screening rates increased from low to high.
- Screening prevalence was compared across multiple time windows for different modalities (mammography, a Papanicolaou test, colonoscopy, colorectal cancer test, endoscopy, and a fecal occult blood test [FOBT]). Overall, 3101 counties were analyzed for mammography and the Papanicolaou test, 3107 counties for colonoscopy, 3100 counties for colorectal cancer test, 3089 counties for endoscopy, and 3090 counties for the FOBT.
TAKEAWAY:
- Overall screening prevalence increased from 1997 to 2019, and global spatial autocorrelation declined over time. For instance, the distribution of mammography screening became 83% more uniform in more recent years (Moran I, 0.57 in 1997-1999 vs 0.10 in 2017-2019). Similarly, Papanicolaou test screening became more uniform in more recent years (Moran I, 0.44 vs. 0.07). These changes indicate reduced geographic heterogeneity.
- Colonoscopy and endoscopy use increased, surpassing a 50% prevalence in many counties for 2010; however, FOBT use declined. Spatial clustering also attenuated, with a 23.4% declined in Moran I for colonoscopy from 2011-2016 to 2017-2019, a 12.3% decline in the colorectal cancer test from 2004-2007 to 2008-2010, and a 14.0% decline for endoscopy from 2004-2007 to 2008-2010.
- Persistently high-/high-screening clusters were concentrated in the Northeast for mammography and colorectal cancer screening and in the East for Papanicolaou test screening, whereas persistently low-/low-screening clusters were concentrated in the Southwest for the same modalities.
- Clusters of low- and high-screening counties were more disadvantaged -- with lower socioeconomic status and a higher proportion of non-White residents -- than other cluster types, suggesting some improvement in screening uptake in more disadvantaged areas. Counties with persistently low screening exhibited greater socioeconomic disadvantages -- lower media household income, higher poverty, lower home values, and lower educational attainment -- than those with persistently high screening.
IN PRACTICE:
"This cross-sectional study found that despite secular increases that reduced geographic variation in screening, local clusters of high and low screening persisted in the Northeast and Southwest US, respectively. Future studies could incorporate health care access characteristics to explain why areas of low screening did not catch up to optimize cancer screening practice," the authors wrote.
SOURCE:
The study, led by Pranoti Pradhan, PhD, Harvard T.H. Chan School of Public Health, Boston, was published online in JAMA Network Open.
LIMITATIONS:
The county-level estimates were modeled using BRFSS, NHIS, and US Census data, which might be susceptible to sampling biases despite corrections for nonresponse and noncoverage. Researchers lacked data on specific health systems characteristics that may have directly driven changes in prevalence and were restricted to using screening time intervals available from the Small Area Estimates for Cancer-Relates Measures from the National Cancer Institute, rather than those according to US Preventive Services Task Force guidelines. Additionally, the spatial cluster method was sensitive to county size and arrangement, which may have influenced local cluster detection.
DISCLOSURES:
This research was supported by the T32 Cancer Prevention and Control Funding Fellowship and T32 Cancer Epidemiology Fellowship at the Harvard T.H. Chan School of Public Health. The authors declared having no conflicts of interest.
This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication.
A version of this article first appeared on Medscape.com.
TOPLINE:
An analysis of 3142 US counties revealed that county-level screening for breast, cervical, and colorectal cancer increased overall between 1997 and 2019; however, despite the reduced geographic variation, persistently high-screening clusters remained in the Northeast, whereas persistently low-screening clusters remained in the Southwest.
METHODOLOGY:
- Cancer screening reduces mortality. Despite guideline recommendation, the uptake of breast, cervical, and colorectal cancer screening in the US falls short of national goals and varies across sociodemographic groups. To date, only a few studies have examined geographic and temporal patterns of screening.
- To address this gap, researchers conducted a cross-sectional study using an ecological panel design to analyze county-level screening prevalence across 3142 US mainland counties from 1997 to 2019, deriving prevalence estimates from Behavioral Risk Factor Surveillance System (BRFSS) and National Health Interview Survey (NHIS) data over 3- to 5-year periods.
- Spatial autocorrelation analyses, including Global Moran I and the bivariate local indicator of spatial autocorrelation, were performed to assess geographic clusters of cancer screening within each period. Four types of local geographic clusters of county-level cancer screening were identified: counties with persistently high screening rates, counties with persistently low screening rates, counties in which screening rates decreased from high to low, and counties in which screening rates increased from low to high.
- Screening prevalence was compared across multiple time windows for different modalities (mammography, a Papanicolaou test, colonoscopy, colorectal cancer test, endoscopy, and a fecal occult blood test [FOBT]). Overall, 3101 counties were analyzed for mammography and the Papanicolaou test, 3107 counties for colonoscopy, 3100 counties for colorectal cancer test, 3089 counties for endoscopy, and 3090 counties for the FOBT.
TAKEAWAY:
- Overall screening prevalence increased from 1997 to 2019, and global spatial autocorrelation declined over time. For instance, the distribution of mammography screening became 83% more uniform in more recent years (Moran I, 0.57 in 1997-1999 vs 0.10 in 2017-2019). Similarly, Papanicolaou test screening became more uniform in more recent years (Moran I, 0.44 vs. 0.07). These changes indicate reduced geographic heterogeneity.
- Colonoscopy and endoscopy use increased, surpassing a 50% prevalence in many counties for 2010; however, FOBT use declined. Spatial clustering also attenuated, with a 23.4% declined in Moran I for colonoscopy from 2011-2016 to 2017-2019, a 12.3% decline in the colorectal cancer test from 2004-2007 to 2008-2010, and a 14.0% decline for endoscopy from 2004-2007 to 2008-2010.
- Persistently high-/high-screening clusters were concentrated in the Northeast for mammography and colorectal cancer screening and in the East for Papanicolaou test screening, whereas persistently low-/low-screening clusters were concentrated in the Southwest for the same modalities.
- Clusters of low- and high-screening counties were more disadvantaged -- with lower socioeconomic status and a higher proportion of non-White residents -- than other cluster types, suggesting some improvement in screening uptake in more disadvantaged areas. Counties with persistently low screening exhibited greater socioeconomic disadvantages -- lower media household income, higher poverty, lower home values, and lower educational attainment -- than those with persistently high screening.
IN PRACTICE:
"This cross-sectional study found that despite secular increases that reduced geographic variation in screening, local clusters of high and low screening persisted in the Northeast and Southwest US, respectively. Future studies could incorporate health care access characteristics to explain why areas of low screening did not catch up to optimize cancer screening practice," the authors wrote.
SOURCE:
The study, led by Pranoti Pradhan, PhD, Harvard T.H. Chan School of Public Health, Boston, was published online in JAMA Network Open.
LIMITATIONS:
The county-level estimates were modeled using BRFSS, NHIS, and US Census data, which might be susceptible to sampling biases despite corrections for nonresponse and noncoverage. Researchers lacked data on specific health systems characteristics that may have directly driven changes in prevalence and were restricted to using screening time intervals available from the Small Area Estimates for Cancer-Relates Measures from the National Cancer Institute, rather than those according to US Preventive Services Task Force guidelines. Additionally, the spatial cluster method was sensitive to county size and arrangement, which may have influenced local cluster detection.
DISCLOSURES:
This research was supported by the T32 Cancer Prevention and Control Funding Fellowship and T32 Cancer Epidemiology Fellowship at the Harvard T.H. Chan School of Public Health. The authors declared having no conflicts of interest.
This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication.
A version of this article first appeared on Medscape.com.
Geographic Clusters Show Uneven Cancer Screening in the US
Geographic Clusters Show Uneven Cancer Screening in the US
Team-Based Care is Crucial for Head-and-Neck Cancer Cases
Team-Based Care is Crucial for Head-and-Neck Cancer Cases
PHOENIX – A 70-year-old Vietnam veteran with oropharyngeal cancer presented challenges beyond his disease.
He couldn’t afford transportation for daily radiation treatments and had lost > 10% of his body weight due to pain and eating difficulties, recalled radiation oncologist Vinita Takiar, MD, PhD, in a presentation at the annual meeting of the Association of VA Hematology/Oncology.
To make matters more difficult, his wife held medical power of attorney despite his apparent competence to make decisions, said Takiar, who formerly worked with the US Department of Veterans Affairs (VA) Cincinnati Healthcare System and is now chair of radiation oncology at Penn State University.
All these factors would likely have derailed his treatment if not for a coordinated team intervention, Takiar said. Fortunately, the clinic launched a multifaceted effort involving representatives from the social work, dentistry, ethics, nutrition, and chaplaincy departments.
When surgery became impossible because the patient couldn’t lie on the operating table for adequate tumor exposure, she said, the existing team framework enabled a seamless and rapid transition to radiation with concurrent chemotherapy.
The patient completed treatment with an excellent response, offering a lesson in the importance of multidisciplinary care in head-and-neck cancers, she said.
In fact, when it comes to these forms of cancer, coordinated care “is probably more impactful than any treatment that we’re going to come up with,” she said. “The data show that when we do multidisciplinary care and we do it well, it actually improves the patient experience and outcomes.”
As Takiar noted, teamwork matters in many ways. It leads to better logistics and can address disparities, reduce financial burden and stigma, and even increase clinical trial involvement.
She pointed to studies linking teamwork to better outcomes, support for patients, and overall survival.
Takiar highlighted different parts of teams headed by radiation oncologists who act as “a node to improve multimodal care delivery.”
Speech and swallowing specialists, for example, are helpful in head-and-neck cancer because “there’s an impact on speech, swallowing, and appearance. Our patients don’t want to go out to dinner with friends because they can’t do it.”
Dentists and prosthodontists are key team members too: “I have dentists who have my cell phone number. They just call me: ‘Can I do this extraction? Was this in your radiation field? What was the dose?’”
Other team members include ear, nose, and throat specialists, palliative and supportive care specialists, medical oncologists, nurses, pathologists, transportation workers, and service connection specialists. She noted that previous military experience can affect radiation therapy. For example, the physical restraints required during treatment present particular challenges for veterans who’ve had wartime trauma. These patients may require therapy adjustments.
What’s next on the horizon? Takiar highlighted precision oncology and molecular profiling, artificial intelligence in care decisions and in radiation planning, telemedicine and virtual tumor boards, and expanded survivorship programs.
As for now, she urged colleagues to not be afraid to chat with radiation oncologists. “Please talk to us. We prioritize open communication and shared decision-making with the entire team,” she said. “If you see something and think your radiation oncologist should know about it, you think it was caused by the radiation, you should reach out to us.”
Takiar reported no disclosures.
PHOENIX – A 70-year-old Vietnam veteran with oropharyngeal cancer presented challenges beyond his disease.
He couldn’t afford transportation for daily radiation treatments and had lost > 10% of his body weight due to pain and eating difficulties, recalled radiation oncologist Vinita Takiar, MD, PhD, in a presentation at the annual meeting of the Association of VA Hematology/Oncology.
To make matters more difficult, his wife held medical power of attorney despite his apparent competence to make decisions, said Takiar, who formerly worked with the US Department of Veterans Affairs (VA) Cincinnati Healthcare System and is now chair of radiation oncology at Penn State University.
All these factors would likely have derailed his treatment if not for a coordinated team intervention, Takiar said. Fortunately, the clinic launched a multifaceted effort involving representatives from the social work, dentistry, ethics, nutrition, and chaplaincy departments.
When surgery became impossible because the patient couldn’t lie on the operating table for adequate tumor exposure, she said, the existing team framework enabled a seamless and rapid transition to radiation with concurrent chemotherapy.
The patient completed treatment with an excellent response, offering a lesson in the importance of multidisciplinary care in head-and-neck cancers, she said.
In fact, when it comes to these forms of cancer, coordinated care “is probably more impactful than any treatment that we’re going to come up with,” she said. “The data show that when we do multidisciplinary care and we do it well, it actually improves the patient experience and outcomes.”
As Takiar noted, teamwork matters in many ways. It leads to better logistics and can address disparities, reduce financial burden and stigma, and even increase clinical trial involvement.
She pointed to studies linking teamwork to better outcomes, support for patients, and overall survival.
Takiar highlighted different parts of teams headed by radiation oncologists who act as “a node to improve multimodal care delivery.”
Speech and swallowing specialists, for example, are helpful in head-and-neck cancer because “there’s an impact on speech, swallowing, and appearance. Our patients don’t want to go out to dinner with friends because they can’t do it.”
Dentists and prosthodontists are key team members too: “I have dentists who have my cell phone number. They just call me: ‘Can I do this extraction? Was this in your radiation field? What was the dose?’”
Other team members include ear, nose, and throat specialists, palliative and supportive care specialists, medical oncologists, nurses, pathologists, transportation workers, and service connection specialists. She noted that previous military experience can affect radiation therapy. For example, the physical restraints required during treatment present particular challenges for veterans who’ve had wartime trauma. These patients may require therapy adjustments.
What’s next on the horizon? Takiar highlighted precision oncology and molecular profiling, artificial intelligence in care decisions and in radiation planning, telemedicine and virtual tumor boards, and expanded survivorship programs.
As for now, she urged colleagues to not be afraid to chat with radiation oncologists. “Please talk to us. We prioritize open communication and shared decision-making with the entire team,” she said. “If you see something and think your radiation oncologist should know about it, you think it was caused by the radiation, you should reach out to us.”
Takiar reported no disclosures.
PHOENIX – A 70-year-old Vietnam veteran with oropharyngeal cancer presented challenges beyond his disease.
He couldn’t afford transportation for daily radiation treatments and had lost > 10% of his body weight due to pain and eating difficulties, recalled radiation oncologist Vinita Takiar, MD, PhD, in a presentation at the annual meeting of the Association of VA Hematology/Oncology.
To make matters more difficult, his wife held medical power of attorney despite his apparent competence to make decisions, said Takiar, who formerly worked with the US Department of Veterans Affairs (VA) Cincinnati Healthcare System and is now chair of radiation oncology at Penn State University.
All these factors would likely have derailed his treatment if not for a coordinated team intervention, Takiar said. Fortunately, the clinic launched a multifaceted effort involving representatives from the social work, dentistry, ethics, nutrition, and chaplaincy departments.
When surgery became impossible because the patient couldn’t lie on the operating table for adequate tumor exposure, she said, the existing team framework enabled a seamless and rapid transition to radiation with concurrent chemotherapy.
The patient completed treatment with an excellent response, offering a lesson in the importance of multidisciplinary care in head-and-neck cancers, she said.
In fact, when it comes to these forms of cancer, coordinated care “is probably more impactful than any treatment that we’re going to come up with,” she said. “The data show that when we do multidisciplinary care and we do it well, it actually improves the patient experience and outcomes.”
As Takiar noted, teamwork matters in many ways. It leads to better logistics and can address disparities, reduce financial burden and stigma, and even increase clinical trial involvement.
She pointed to studies linking teamwork to better outcomes, support for patients, and overall survival.
Takiar highlighted different parts of teams headed by radiation oncologists who act as “a node to improve multimodal care delivery.”
Speech and swallowing specialists, for example, are helpful in head-and-neck cancer because “there’s an impact on speech, swallowing, and appearance. Our patients don’t want to go out to dinner with friends because they can’t do it.”
Dentists and prosthodontists are key team members too: “I have dentists who have my cell phone number. They just call me: ‘Can I do this extraction? Was this in your radiation field? What was the dose?’”
Other team members include ear, nose, and throat specialists, palliative and supportive care specialists, medical oncologists, nurses, pathologists, transportation workers, and service connection specialists. She noted that previous military experience can affect radiation therapy. For example, the physical restraints required during treatment present particular challenges for veterans who’ve had wartime trauma. These patients may require therapy adjustments.
What’s next on the horizon? Takiar highlighted precision oncology and molecular profiling, artificial intelligence in care decisions and in radiation planning, telemedicine and virtual tumor boards, and expanded survivorship programs.
As for now, she urged colleagues to not be afraid to chat with radiation oncologists. “Please talk to us. We prioritize open communication and shared decision-making with the entire team,” she said. “If you see something and think your radiation oncologist should know about it, you think it was caused by the radiation, you should reach out to us.”
Takiar reported no disclosures.
Team-Based Care is Crucial for Head-and-Neck Cancer Cases
Team-Based Care is Crucial for Head-and-Neck Cancer Cases
Rising Cancer Rates Among Young People Spur New Fertility Preservation Options
Rising Cancer Rates Among Young People Spur New Fertility Preservation Options
ATLANTA —Jacqueline Lee, MD, a reproductive endocrinologist at Emory School of Medicine, frequently treats patients with cancer. Recently, she treated 4 women in their 30s with histories of colon cancer, acute lymphoblastic leukemia, lymphoma, and breast cancer. A young man in his 20s sought her care, to discuss his case of lymphoma.
All these patients sought guidance from Lee because they want to protect their ability to have children. At the annual meeting of the Association of VA Hematology/Oncology, Lee explained that plenty of patients are finding themselves in similar straits due in part to recent trends.
Cancer rates in the US have been rising among people aged 15 to 39 years, who now account for 4.2% of all cancer cases. An estimated 84,100 people in this age group are expected to be diagnosed with cancer this year. Meanwhile, women are having children later in life-birth rates are up among those aged 25 to 49 years-making it more likely that they have histories of cancer.
Although it's difficult to predict how cancer will affect fertility, Lee emphasized that many chemotherapy medications, including cisplatin and carboplatin, are cytotoxic. "It's hard to always predict what someone's arc of care is going to be," she said, "so I really have a low threshold for recommending fertility preservation in patients who have a strong desire to have future childbearing."
For women with cancer, egg preservation isn't the only strategy. Clinicians can also try to protect ovarian tissue from pelvic radiation through surgical reposition of the ovaries, Lee noted. In addition goserelin, a hormone-suppressing therapy, may protect the ovaries from chemotherapy, though its effectiveness in boosting pregnancy rates is still unclear.
"When I mentioned this option, it's usually for patients who can't preserve fertility via egg or embryo preservation, or we don't have the luxury of that kind of time," Lee said. "I say that if helps at all, it might help you resume menses after treatment. But infertility is still very common."
For some patients, freezing eggs is an easy decision. "They don't have a reproductive partner they're ready to make embryos with, so we proceed with egg preservation. It's no longer considered experimental and comes with lower upfront costs since the costs of actually making embryos are deferred until the future."
In addition, she said, freezing eggs also avoids the touchy topic of disposing of embryos. Lee cautions patients that retrieving eggs is a 2-week process that requires any initiation of cancer care to be delayed. However, the retrieval process can be adjusted in patients with special needs due to the type of cancer they have.
For prepubertal girls with cancer, ovarian tissue can be removed and frozen as a fertility preservation option. However, this is not considered standard of care. "We don't do it," she said. "We refer out if needed. Hopefully we'll develop a program in the future."
As for the 5 patients that Lee mentioned, with details changed to protect their privacy, their outcomes were as follows:
- The woman with colon cancer, who had undergone a hemicolectomy, chose to defer fertility preservation.
- The woman with acute lymphoblastic leukemia, who was taking depo-Lupron, had undetectable anti-Müllerian hormone (AMH) levels. Lee discussed the possibility of IVF with a donor egg.
- The woman with breast cancer, who was newly diagnosed, deferred fertility preservation.
- The man with lymphoma (Hodgkin's), who was awaiting chemotherapy, had his sperm frozen.
- The woman with lymphoma (new diagnosis) had 27 eggs frozen.
Lee had no disclosures to report.
ATLANTA —Jacqueline Lee, MD, a reproductive endocrinologist at Emory School of Medicine, frequently treats patients with cancer. Recently, she treated 4 women in their 30s with histories of colon cancer, acute lymphoblastic leukemia, lymphoma, and breast cancer. A young man in his 20s sought her care, to discuss his case of lymphoma.
All these patients sought guidance from Lee because they want to protect their ability to have children. At the annual meeting of the Association of VA Hematology/Oncology, Lee explained that plenty of patients are finding themselves in similar straits due in part to recent trends.
Cancer rates in the US have been rising among people aged 15 to 39 years, who now account for 4.2% of all cancer cases. An estimated 84,100 people in this age group are expected to be diagnosed with cancer this year. Meanwhile, women are having children later in life-birth rates are up among those aged 25 to 49 years-making it more likely that they have histories of cancer.
Although it's difficult to predict how cancer will affect fertility, Lee emphasized that many chemotherapy medications, including cisplatin and carboplatin, are cytotoxic. "It's hard to always predict what someone's arc of care is going to be," she said, "so I really have a low threshold for recommending fertility preservation in patients who have a strong desire to have future childbearing."
For women with cancer, egg preservation isn't the only strategy. Clinicians can also try to protect ovarian tissue from pelvic radiation through surgical reposition of the ovaries, Lee noted. In addition goserelin, a hormone-suppressing therapy, may protect the ovaries from chemotherapy, though its effectiveness in boosting pregnancy rates is still unclear.
"When I mentioned this option, it's usually for patients who can't preserve fertility via egg or embryo preservation, or we don't have the luxury of that kind of time," Lee said. "I say that if helps at all, it might help you resume menses after treatment. But infertility is still very common."
For some patients, freezing eggs is an easy decision. "They don't have a reproductive partner they're ready to make embryos with, so we proceed with egg preservation. It's no longer considered experimental and comes with lower upfront costs since the costs of actually making embryos are deferred until the future."
In addition, she said, freezing eggs also avoids the touchy topic of disposing of embryos. Lee cautions patients that retrieving eggs is a 2-week process that requires any initiation of cancer care to be delayed. However, the retrieval process can be adjusted in patients with special needs due to the type of cancer they have.
For prepubertal girls with cancer, ovarian tissue can be removed and frozen as a fertility preservation option. However, this is not considered standard of care. "We don't do it," she said. "We refer out if needed. Hopefully we'll develop a program in the future."
As for the 5 patients that Lee mentioned, with details changed to protect their privacy, their outcomes were as follows:
- The woman with colon cancer, who had undergone a hemicolectomy, chose to defer fertility preservation.
- The woman with acute lymphoblastic leukemia, who was taking depo-Lupron, had undetectable anti-Müllerian hormone (AMH) levels. Lee discussed the possibility of IVF with a donor egg.
- The woman with breast cancer, who was newly diagnosed, deferred fertility preservation.
- The man with lymphoma (Hodgkin's), who was awaiting chemotherapy, had his sperm frozen.
- The woman with lymphoma (new diagnosis) had 27 eggs frozen.
Lee had no disclosures to report.
ATLANTA —Jacqueline Lee, MD, a reproductive endocrinologist at Emory School of Medicine, frequently treats patients with cancer. Recently, she treated 4 women in their 30s with histories of colon cancer, acute lymphoblastic leukemia, lymphoma, and breast cancer. A young man in his 20s sought her care, to discuss his case of lymphoma.
All these patients sought guidance from Lee because they want to protect their ability to have children. At the annual meeting of the Association of VA Hematology/Oncology, Lee explained that plenty of patients are finding themselves in similar straits due in part to recent trends.
Cancer rates in the US have been rising among people aged 15 to 39 years, who now account for 4.2% of all cancer cases. An estimated 84,100 people in this age group are expected to be diagnosed with cancer this year. Meanwhile, women are having children later in life-birth rates are up among those aged 25 to 49 years-making it more likely that they have histories of cancer.
Although it's difficult to predict how cancer will affect fertility, Lee emphasized that many chemotherapy medications, including cisplatin and carboplatin, are cytotoxic. "It's hard to always predict what someone's arc of care is going to be," she said, "so I really have a low threshold for recommending fertility preservation in patients who have a strong desire to have future childbearing."
For women with cancer, egg preservation isn't the only strategy. Clinicians can also try to protect ovarian tissue from pelvic radiation through surgical reposition of the ovaries, Lee noted. In addition goserelin, a hormone-suppressing therapy, may protect the ovaries from chemotherapy, though its effectiveness in boosting pregnancy rates is still unclear.
"When I mentioned this option, it's usually for patients who can't preserve fertility via egg or embryo preservation, or we don't have the luxury of that kind of time," Lee said. "I say that if helps at all, it might help you resume menses after treatment. But infertility is still very common."
For some patients, freezing eggs is an easy decision. "They don't have a reproductive partner they're ready to make embryos with, so we proceed with egg preservation. It's no longer considered experimental and comes with lower upfront costs since the costs of actually making embryos are deferred until the future."
In addition, she said, freezing eggs also avoids the touchy topic of disposing of embryos. Lee cautions patients that retrieving eggs is a 2-week process that requires any initiation of cancer care to be delayed. However, the retrieval process can be adjusted in patients with special needs due to the type of cancer they have.
For prepubertal girls with cancer, ovarian tissue can be removed and frozen as a fertility preservation option. However, this is not considered standard of care. "We don't do it," she said. "We refer out if needed. Hopefully we'll develop a program in the future."
As for the 5 patients that Lee mentioned, with details changed to protect their privacy, their outcomes were as follows:
- The woman with colon cancer, who had undergone a hemicolectomy, chose to defer fertility preservation.
- The woman with acute lymphoblastic leukemia, who was taking depo-Lupron, had undetectable anti-Müllerian hormone (AMH) levels. Lee discussed the possibility of IVF with a donor egg.
- The woman with breast cancer, who was newly diagnosed, deferred fertility preservation.
- The man with lymphoma (Hodgkin's), who was awaiting chemotherapy, had his sperm frozen.
- The woman with lymphoma (new diagnosis) had 27 eggs frozen.
Lee had no disclosures to report.
Rising Cancer Rates Among Young People Spur New Fertility Preservation Options
Rising Cancer Rates Among Young People Spur New Fertility Preservation Options
VA Cancer Clinical Trials as a Strategy for Increasing Accrual of Racial and Ethnic Underrepresented Groups
Background
Cancer clinical trials (CCTs) are central to improving cancer care. However, generalizability of findings from CCTs is difficult due to the lack of diversity in most United States CCTs. Clinical trial accrual of underrepresented groups, is low throughout the United States and is approximately 4-5% in most CCTs. Reasons for low accrual in this population are multifactorial. Despite numerous factors related to accruing racial and ethnic underrepresented groups, many institutions have sought to address these barriers. We conducted a scoping review to identify evidence-based approaches to increase participation in cancer treatment clinical trials.
Methods
We reviewed the Salisbury VA Medical Center Oncology clinical trial database from October 2019 to June 2024. The participants in these clinical trials required consent. These clinical trials included treatment interventional as well as non-treatment interventional. Fifteen studies were included and over 260 Veterans participated.
Results
Key themes emerged that included a focus on patient education, cultural competency, and building capacity in the clinics to care for the Veteran population at three separate sites in the Salisbury VA system. The Black Veteran accrual rate of 29% was achieved. This accrual rate is representative of our VA catchment population of 33% for Black Veterans, and is five times the national average.
Conclusions
The research team’s success in enrolling Black Veterans in clinical trials is attributed to several factors. The demographic composition of Veterans served by the Salisbury, Charlotte, and Kernersville VA provided a diverse population that included a 33% Black group. The type of clinical trials focused on patients who were most impacted by the disease. The VA did afford less barriers to access to health care.
Background
Cancer clinical trials (CCTs) are central to improving cancer care. However, generalizability of findings from CCTs is difficult due to the lack of diversity in most United States CCTs. Clinical trial accrual of underrepresented groups, is low throughout the United States and is approximately 4-5% in most CCTs. Reasons for low accrual in this population are multifactorial. Despite numerous factors related to accruing racial and ethnic underrepresented groups, many institutions have sought to address these barriers. We conducted a scoping review to identify evidence-based approaches to increase participation in cancer treatment clinical trials.
Methods
We reviewed the Salisbury VA Medical Center Oncology clinical trial database from October 2019 to June 2024. The participants in these clinical trials required consent. These clinical trials included treatment interventional as well as non-treatment interventional. Fifteen studies were included and over 260 Veterans participated.
Results
Key themes emerged that included a focus on patient education, cultural competency, and building capacity in the clinics to care for the Veteran population at three separate sites in the Salisbury VA system. The Black Veteran accrual rate of 29% was achieved. This accrual rate is representative of our VA catchment population of 33% for Black Veterans, and is five times the national average.
Conclusions
The research team’s success in enrolling Black Veterans in clinical trials is attributed to several factors. The demographic composition of Veterans served by the Salisbury, Charlotte, and Kernersville VA provided a diverse population that included a 33% Black group. The type of clinical trials focused on patients who were most impacted by the disease. The VA did afford less barriers to access to health care.
Background
Cancer clinical trials (CCTs) are central to improving cancer care. However, generalizability of findings from CCTs is difficult due to the lack of diversity in most United States CCTs. Clinical trial accrual of underrepresented groups, is low throughout the United States and is approximately 4-5% in most CCTs. Reasons for low accrual in this population are multifactorial. Despite numerous factors related to accruing racial and ethnic underrepresented groups, many institutions have sought to address these barriers. We conducted a scoping review to identify evidence-based approaches to increase participation in cancer treatment clinical trials.
Methods
We reviewed the Salisbury VA Medical Center Oncology clinical trial database from October 2019 to June 2024. The participants in these clinical trials required consent. These clinical trials included treatment interventional as well as non-treatment interventional. Fifteen studies were included and over 260 Veterans participated.
Results
Key themes emerged that included a focus on patient education, cultural competency, and building capacity in the clinics to care for the Veteran population at three separate sites in the Salisbury VA system. The Black Veteran accrual rate of 29% was achieved. This accrual rate is representative of our VA catchment population of 33% for Black Veterans, and is five times the national average.
Conclusions
The research team’s success in enrolling Black Veterans in clinical trials is attributed to several factors. The demographic composition of Veterans served by the Salisbury, Charlotte, and Kernersville VA provided a diverse population that included a 33% Black group. The type of clinical trials focused on patients who were most impacted by the disease. The VA did afford less barriers to access to health care.
Military Women Survive Ovarian Cancer at Higher Rates
Military Women Survive Ovarian Cancer at Higher Rates
Women with epithelial ovarian cancer treated in the US Department of Defense (DoD) universal health care system demonstrate better 5-year survival compared with similar patients from the national population. The survival advantage persists across multiple age groups and disease stages, with particularly notable improvements in patients aged 35-49 years and those with stage III disease.
METHODOLOGY:
- Researchers compared 1504 patients with invasive stage I-IV epithelial ovarian carcinoma from the Automated Center Tumor Registry (ACTUR) for the DoD with 6016 matched patients from the 18-region Surveillance, Epidemiology, and End Results (SEER) program between 1987 and 2013.
- Patients from ACTUR were matched in a 1:4 ratio with SEER patients stratified for age, race, year of diagnosis, and histology, including serous carcinoma, clear cell carcinoma, mucinous carcinoma, and endometrioid carcinoma with adenocarcinoma subtypes.
- Five-year overall survival was evaluated using the Kaplan-Meier method and compared using log-rank test, with median follow-up time of 46 months in ACTUR and 44 months in SEER.
- Adjusted hazard ratio (AHR) and 95% CI for all-cause mortality were estimated from multivariable Cox proportional regression modeling controlling for age, race, year of diagnosis, region of diagnosis, stage, histology, and grade.
TAKEAWAY:
- Overall survival differs between registries: 5-year survival of 53.2% in ACTUR vs 47.7% in matched SEER cohort (log-rank P = .001).
- In the primary adjusted model, ACTUR is associated with a lower risk for all-cause mortality vs SEER (AHR, 0.83; 95% CI, 0.76-0.91; P < .0001).
- Subset results retain lower adjusted risk for death for ACTUR vs SEER among ages 35-49 years (AHR, 0.66; 95% CI, 0.52-0.83; P = .0005), ages ≥ 65 years (AHR, 0.82; 95% CI, 0.70-0.96; P = .016), and stage III cancer (AHR, 0.79; 95% CI, 0.69-0.91; P = .0015).
- Histology-stratified findings show lower adjusted risk for death in ACTUR vs SEER for clear cell carcinoma (AHR, 0.63; 95% CI, 0.43-0.93; P =.02) and for endometrioid and other adenocarcinomas (AHR, 0.68; 95% CI, 0.56-0.81; P < .0001).
IN PRACTICE:
"This study is envisioned to be a stepping stone to further investigations of survival and other cancer health outcomes starting with patients diagnosed between 2014 and 2024 with epithelial carcinoma of the ovary, fallopian tube, or primary peritoneum in the DoD Healthcare System versus the national population or other Healthcare Systems,” wrote the authors of the study. “Dedicated funding and support in the [Military Health System] are needed to invest in infrastructure, technology, security, education, and research.”
SOURCE:
The study was led by Kathleen M. Darcy, PhD, and Christopher M. Tarney, MD, from the Gynecologic Cancer Center of Excellence, Department of Gynecologic Surgery & Obstetrics, Uniformed Services University, Walter Reed National Military Medical Center in Bethesda, Maryland. It was published online in Military Medicine.
LIMITATIONS:
The retrospective cohort study design limits causal inference. Although groups were balanced by age, race, year, and region of diagnosis, other demographic factors and socioeconomic variables such as patient comorbidities, educational attainment, household income, and health insurance status were not available and may have affected results. The databases fundamentally differ in how data are acquired, with ACTUR following hospital-based Facility Oncology Registry Data Standards and SEER being a national population-based registry, potentially affecting data quality, consistency, and reliability of survival outcome comparisons. The inclusion of patients diagnosed only through 2013 represents a limitation as it does not allow for contemporary evaluation of survival outcomes, particularly given advances over the past decade including maximal cytoreductive effort to no residual disease, increased adoption of neoadjuvant chemotherapy, and introduction of targeted maintenance agents. The study could not incorporate details regarding residual disease status or control for specifics regarding surgical and medical management, including primary vs interval debulking surgery or the type and timing of agents utilized in first-line, maintenance, and recurrent disease settings. Data regarding circulating biomarkers including CA125, molecular subtypes or alterations, and stratification by homologous recombination deficiency vs proficiency status were not available. Epithelial carcinomas of the fallopian tube and primary peritoneum were excluded from this study, which now are commonly incorporated with ovarian carcinomas. Results may not be generalizable to other populations given the unique characteristics of the Military Health System beneficiary population.
DISCLOSURES:
This research received funding from the Uniformed Services University from the Defense Health Program to the Henry M. Jackson Foundation for the Advancement of Military Medicine Inc., including award HU0001-18-2-0032 to the Murtha Cancer Center Research Program and awards HU0001-19-2-0031 and HU0001-24-2-0047 to the Gynecologic Cancer Center of Excellence Program. All coauthors disclosed no conflicts of interest.
This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication.
Women with epithelial ovarian cancer treated in the US Department of Defense (DoD) universal health care system demonstrate better 5-year survival compared with similar patients from the national population. The survival advantage persists across multiple age groups and disease stages, with particularly notable improvements in patients aged 35-49 years and those with stage III disease.
METHODOLOGY:
- Researchers compared 1504 patients with invasive stage I-IV epithelial ovarian carcinoma from the Automated Center Tumor Registry (ACTUR) for the DoD with 6016 matched patients from the 18-region Surveillance, Epidemiology, and End Results (SEER) program between 1987 and 2013.
- Patients from ACTUR were matched in a 1:4 ratio with SEER patients stratified for age, race, year of diagnosis, and histology, including serous carcinoma, clear cell carcinoma, mucinous carcinoma, and endometrioid carcinoma with adenocarcinoma subtypes.
- Five-year overall survival was evaluated using the Kaplan-Meier method and compared using log-rank test, with median follow-up time of 46 months in ACTUR and 44 months in SEER.
- Adjusted hazard ratio (AHR) and 95% CI for all-cause mortality were estimated from multivariable Cox proportional regression modeling controlling for age, race, year of diagnosis, region of diagnosis, stage, histology, and grade.
TAKEAWAY:
- Overall survival differs between registries: 5-year survival of 53.2% in ACTUR vs 47.7% in matched SEER cohort (log-rank P = .001).
- In the primary adjusted model, ACTUR is associated with a lower risk for all-cause mortality vs SEER (AHR, 0.83; 95% CI, 0.76-0.91; P < .0001).
- Subset results retain lower adjusted risk for death for ACTUR vs SEER among ages 35-49 years (AHR, 0.66; 95% CI, 0.52-0.83; P = .0005), ages ≥ 65 years (AHR, 0.82; 95% CI, 0.70-0.96; P = .016), and stage III cancer (AHR, 0.79; 95% CI, 0.69-0.91; P = .0015).
- Histology-stratified findings show lower adjusted risk for death in ACTUR vs SEER for clear cell carcinoma (AHR, 0.63; 95% CI, 0.43-0.93; P =.02) and for endometrioid and other adenocarcinomas (AHR, 0.68; 95% CI, 0.56-0.81; P < .0001).
IN PRACTICE:
"This study is envisioned to be a stepping stone to further investigations of survival and other cancer health outcomes starting with patients diagnosed between 2014 and 2024 with epithelial carcinoma of the ovary, fallopian tube, or primary peritoneum in the DoD Healthcare System versus the national population or other Healthcare Systems,” wrote the authors of the study. “Dedicated funding and support in the [Military Health System] are needed to invest in infrastructure, technology, security, education, and research.”
SOURCE:
The study was led by Kathleen M. Darcy, PhD, and Christopher M. Tarney, MD, from the Gynecologic Cancer Center of Excellence, Department of Gynecologic Surgery & Obstetrics, Uniformed Services University, Walter Reed National Military Medical Center in Bethesda, Maryland. It was published online in Military Medicine.
LIMITATIONS:
The retrospective cohort study design limits causal inference. Although groups were balanced by age, race, year, and region of diagnosis, other demographic factors and socioeconomic variables such as patient comorbidities, educational attainment, household income, and health insurance status were not available and may have affected results. The databases fundamentally differ in how data are acquired, with ACTUR following hospital-based Facility Oncology Registry Data Standards and SEER being a national population-based registry, potentially affecting data quality, consistency, and reliability of survival outcome comparisons. The inclusion of patients diagnosed only through 2013 represents a limitation as it does not allow for contemporary evaluation of survival outcomes, particularly given advances over the past decade including maximal cytoreductive effort to no residual disease, increased adoption of neoadjuvant chemotherapy, and introduction of targeted maintenance agents. The study could not incorporate details regarding residual disease status or control for specifics regarding surgical and medical management, including primary vs interval debulking surgery or the type and timing of agents utilized in first-line, maintenance, and recurrent disease settings. Data regarding circulating biomarkers including CA125, molecular subtypes or alterations, and stratification by homologous recombination deficiency vs proficiency status were not available. Epithelial carcinomas of the fallopian tube and primary peritoneum were excluded from this study, which now are commonly incorporated with ovarian carcinomas. Results may not be generalizable to other populations given the unique characteristics of the Military Health System beneficiary population.
DISCLOSURES:
This research received funding from the Uniformed Services University from the Defense Health Program to the Henry M. Jackson Foundation for the Advancement of Military Medicine Inc., including award HU0001-18-2-0032 to the Murtha Cancer Center Research Program and awards HU0001-19-2-0031 and HU0001-24-2-0047 to the Gynecologic Cancer Center of Excellence Program. All coauthors disclosed no conflicts of interest.
This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication.
Women with epithelial ovarian cancer treated in the US Department of Defense (DoD) universal health care system demonstrate better 5-year survival compared with similar patients from the national population. The survival advantage persists across multiple age groups and disease stages, with particularly notable improvements in patients aged 35-49 years and those with stage III disease.
METHODOLOGY:
- Researchers compared 1504 patients with invasive stage I-IV epithelial ovarian carcinoma from the Automated Center Tumor Registry (ACTUR) for the DoD with 6016 matched patients from the 18-region Surveillance, Epidemiology, and End Results (SEER) program between 1987 and 2013.
- Patients from ACTUR were matched in a 1:4 ratio with SEER patients stratified for age, race, year of diagnosis, and histology, including serous carcinoma, clear cell carcinoma, mucinous carcinoma, and endometrioid carcinoma with adenocarcinoma subtypes.
- Five-year overall survival was evaluated using the Kaplan-Meier method and compared using log-rank test, with median follow-up time of 46 months in ACTUR and 44 months in SEER.
- Adjusted hazard ratio (AHR) and 95% CI for all-cause mortality were estimated from multivariable Cox proportional regression modeling controlling for age, race, year of diagnosis, region of diagnosis, stage, histology, and grade.
TAKEAWAY:
- Overall survival differs between registries: 5-year survival of 53.2% in ACTUR vs 47.7% in matched SEER cohort (log-rank P = .001).
- In the primary adjusted model, ACTUR is associated with a lower risk for all-cause mortality vs SEER (AHR, 0.83; 95% CI, 0.76-0.91; P < .0001).
- Subset results retain lower adjusted risk for death for ACTUR vs SEER among ages 35-49 years (AHR, 0.66; 95% CI, 0.52-0.83; P = .0005), ages ≥ 65 years (AHR, 0.82; 95% CI, 0.70-0.96; P = .016), and stage III cancer (AHR, 0.79; 95% CI, 0.69-0.91; P = .0015).
- Histology-stratified findings show lower adjusted risk for death in ACTUR vs SEER for clear cell carcinoma (AHR, 0.63; 95% CI, 0.43-0.93; P =.02) and for endometrioid and other adenocarcinomas (AHR, 0.68; 95% CI, 0.56-0.81; P < .0001).
IN PRACTICE:
"This study is envisioned to be a stepping stone to further investigations of survival and other cancer health outcomes starting with patients diagnosed between 2014 and 2024 with epithelial carcinoma of the ovary, fallopian tube, or primary peritoneum in the DoD Healthcare System versus the national population or other Healthcare Systems,” wrote the authors of the study. “Dedicated funding and support in the [Military Health System] are needed to invest in infrastructure, technology, security, education, and research.”
SOURCE:
The study was led by Kathleen M. Darcy, PhD, and Christopher M. Tarney, MD, from the Gynecologic Cancer Center of Excellence, Department of Gynecologic Surgery & Obstetrics, Uniformed Services University, Walter Reed National Military Medical Center in Bethesda, Maryland. It was published online in Military Medicine.
LIMITATIONS:
The retrospective cohort study design limits causal inference. Although groups were balanced by age, race, year, and region of diagnosis, other demographic factors and socioeconomic variables such as patient comorbidities, educational attainment, household income, and health insurance status were not available and may have affected results. The databases fundamentally differ in how data are acquired, with ACTUR following hospital-based Facility Oncology Registry Data Standards and SEER being a national population-based registry, potentially affecting data quality, consistency, and reliability of survival outcome comparisons. The inclusion of patients diagnosed only through 2013 represents a limitation as it does not allow for contemporary evaluation of survival outcomes, particularly given advances over the past decade including maximal cytoreductive effort to no residual disease, increased adoption of neoadjuvant chemotherapy, and introduction of targeted maintenance agents. The study could not incorporate details regarding residual disease status or control for specifics regarding surgical and medical management, including primary vs interval debulking surgery or the type and timing of agents utilized in first-line, maintenance, and recurrent disease settings. Data regarding circulating biomarkers including CA125, molecular subtypes or alterations, and stratification by homologous recombination deficiency vs proficiency status were not available. Epithelial carcinomas of the fallopian tube and primary peritoneum were excluded from this study, which now are commonly incorporated with ovarian carcinomas. Results may not be generalizable to other populations given the unique characteristics of the Military Health System beneficiary population.
DISCLOSURES:
This research received funding from the Uniformed Services University from the Defense Health Program to the Henry M. Jackson Foundation for the Advancement of Military Medicine Inc., including award HU0001-18-2-0032 to the Murtha Cancer Center Research Program and awards HU0001-19-2-0031 and HU0001-24-2-0047 to the Gynecologic Cancer Center of Excellence Program. All coauthors disclosed no conflicts of interest.
This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication.
Military Women Survive Ovarian Cancer at Higher Rates
Military Women Survive Ovarian Cancer at Higher Rates
No Survival Gain With Adjuvant Therapy in Stage III Melanoma
Offering adjuvant therapy to patients with stage III melanoma offers no melanoma-specific or overall survival benefit, reveals extended follow-up from the first population-based national study to estimate the impact of the treatment.
Hildur Helgadottir, MD, PhD, presented the new findings at the 22nd European Association of Dermato-Oncology (EADO) Congress 2026 on April 24 and described the lead-up to the latest update on the study.
To investigate the impact of adjuvant treatment in patients with stage III melanoma, researchers initially conducted a study in which they used the Swedish Melanoma Registry (SweMR) to identify a precohort of those treated before the introduction of adjuvant therapy in 2018 and a postcohort of those treated subsequently, following both groups out to 2023, she explained.
The analysis revealed no significant difference in melanoma-specific survival between the two groups, at a hazard ratio of 0.92, nor in overall survival, at a hazard ratio of 0.93 (P = .60 for both). However, median follow-up differed between the groups, at 69 months vs 39 months for the precohort vs the postcohort.
Helgadottir, who is a senior research specialist at the Karolinska Comprehensive Cancer Center in Stockholm, Sweden, said that when the earlier results were presented at the European Society for Medical Oncology 2024, there was some criticism that the follow-up was not long enough and that there was no information on the actual adjuvant treatment received in the postcohort patients.
The researchers therefore extended their study out to 2024 to increase the median follow-up to 60 months vs 92 months in the postcohort group vs the precohort group.
They also focused patient selection on patients aged less than 75 years because exposure to adjuvant therapy in older patients was low and restricted the analysis to sentinel lymph node-positive stage IIIB-D cutaneous melanoma diagnosed between 2016 and 2020. This was because adjuvant exposure in stage IIIA disease was low, and patients with clinically detected stage III melanoma started to receive neoadjuvant therapy from 2022 onward.
The current analysis, which was recently published in the European Journal of Cancer, involved 287 patients in the precohort and 349 in the postcohort, who had a median age of 60.0 years and 61.0 years, respectively, and of whom 62.0% and 60.5%, respectively, were male. The groups were well balanced in terms of baseline disease characteristics.
Helgadottir explained that 73% of patients in the postcohort received some form of adjuvant treatment, with the majority treated with PD-1 inhibitors, and a smaller proportion given B-Raf serine-threonine kinase inhibitors. The main reasons for not giving adjuvant therapy were favorable tumor characteristics and the presence of comorbidities.
Five-year melanoma-specific survival rates in the precohorts and postcohorts were 71.4% vs 73.2%, at a hazard ratio adjusted for age, sex, and American Joint Committee on Cancer stage of 1.01 (P = .931). Five-year overall survival rates were 67.3% vs 70.1%, at an adjusted hazard ratio of 0.96 (P = .791).
Helgadottir showed that there were also no significant survival differences in any of the prespecified subgroups for neither melanoma-specific nor overall survival.
There were, again, no significant differences in survival outcomes between the two patient groups, she reported.
The latest results are similar to those from another study conducted in Netherlands and a Danish analysis, Helgadottir said.
Taken together, and “considering the side effects and the costs, it is possible that we will go back to closely following up our patients and treating only at relapse,” she said, “and optimally, of course, that will be already in the neoadjuvant setting.”
“And of course we will need biomarkers because there could be some patients that really need adjuvant treatment, but we need to identify these patients,” continued Helgadottir. Overall survival results from KEYNOTE-054, which compares pembrolizumab with placebo after resection of high-risk stage III melanoma, are awaited, she continued.
Helgadottir explained that adjuvant treatment for stage III melanoma was approved in Sweden in 2018, with treatments freely available to all Swedish residents.
The SweMR is a population-based national register that has near-complete and detailed data on primary cutaneous melanomas, including nodal status and satellite and in-transit disease, and is linked to the national Cause of Death Registry. Helgadottir noted, however, that the SweMR does not contain any information on relapses or the nature of the oncologic treatment received by patients with melanoma.
Following her presentation, she was challenged by an audience member as to whether, on the basis of her findings, she would go back to following up with patients and treating at relapses.
“Maybe we should do that and believe in our own data, and we do. But still, the gold standard must always be the randomized clinical trial,” Helgadottir responded. “So I think, although that we believe in this data, we also want to see the results of the randomized studies.”
The audience member commented that she can see in the data from her own institution that they treat fewer and fewer patients with melanoma with adjuvant therapy by discussing it more thoroughly and being stricter on who should receive it.
Helgadottir agreed, adding that “based on this experience, we did not introduce it to stage II patients because it’s always harder to go back” once a group of patients has started to receive a treatment.
The research was supported by Regional Cancer Centres in Sweden and with grants from the Swedish Cancer Society, Region Stockholm, and the Cancer Research Funds of Radiumhemmet. Helgadottir declared having relationships with Bristol Myers Squibb, Merck Sharp & Dohme, Pierre Fabre, and Novartis.
The trial was supported by SkinVision. The researchers declared having no relevant financial relationships.
This article was previously published by Medscape.
Offering adjuvant therapy to patients with stage III melanoma offers no melanoma-specific or overall survival benefit, reveals extended follow-up from the first population-based national study to estimate the impact of the treatment.
Hildur Helgadottir, MD, PhD, presented the new findings at the 22nd European Association of Dermato-Oncology (EADO) Congress 2026 on April 24 and described the lead-up to the latest update on the study.
To investigate the impact of adjuvant treatment in patients with stage III melanoma, researchers initially conducted a study in which they used the Swedish Melanoma Registry (SweMR) to identify a precohort of those treated before the introduction of adjuvant therapy in 2018 and a postcohort of those treated subsequently, following both groups out to 2023, she explained.
The analysis revealed no significant difference in melanoma-specific survival between the two groups, at a hazard ratio of 0.92, nor in overall survival, at a hazard ratio of 0.93 (P = .60 for both). However, median follow-up differed between the groups, at 69 months vs 39 months for the precohort vs the postcohort.
Helgadottir, who is a senior research specialist at the Karolinska Comprehensive Cancer Center in Stockholm, Sweden, said that when the earlier results were presented at the European Society for Medical Oncology 2024, there was some criticism that the follow-up was not long enough and that there was no information on the actual adjuvant treatment received in the postcohort patients.
The researchers therefore extended their study out to 2024 to increase the median follow-up to 60 months vs 92 months in the postcohort group vs the precohort group.
They also focused patient selection on patients aged less than 75 years because exposure to adjuvant therapy in older patients was low and restricted the analysis to sentinel lymph node-positive stage IIIB-D cutaneous melanoma diagnosed between 2016 and 2020. This was because adjuvant exposure in stage IIIA disease was low, and patients with clinically detected stage III melanoma started to receive neoadjuvant therapy from 2022 onward.
The current analysis, which was recently published in the European Journal of Cancer, involved 287 patients in the precohort and 349 in the postcohort, who had a median age of 60.0 years and 61.0 years, respectively, and of whom 62.0% and 60.5%, respectively, were male. The groups were well balanced in terms of baseline disease characteristics.
Helgadottir explained that 73% of patients in the postcohort received some form of adjuvant treatment, with the majority treated with PD-1 inhibitors, and a smaller proportion given B-Raf serine-threonine kinase inhibitors. The main reasons for not giving adjuvant therapy were favorable tumor characteristics and the presence of comorbidities.
Five-year melanoma-specific survival rates in the precohorts and postcohorts were 71.4% vs 73.2%, at a hazard ratio adjusted for age, sex, and American Joint Committee on Cancer stage of 1.01 (P = .931). Five-year overall survival rates were 67.3% vs 70.1%, at an adjusted hazard ratio of 0.96 (P = .791).
Helgadottir showed that there were also no significant survival differences in any of the prespecified subgroups for neither melanoma-specific nor overall survival.
There were, again, no significant differences in survival outcomes between the two patient groups, she reported.
The latest results are similar to those from another study conducted in Netherlands and a Danish analysis, Helgadottir said.
Taken together, and “considering the side effects and the costs, it is possible that we will go back to closely following up our patients and treating only at relapse,” she said, “and optimally, of course, that will be already in the neoadjuvant setting.”
“And of course we will need biomarkers because there could be some patients that really need adjuvant treatment, but we need to identify these patients,” continued Helgadottir. Overall survival results from KEYNOTE-054, which compares pembrolizumab with placebo after resection of high-risk stage III melanoma, are awaited, she continued.
Helgadottir explained that adjuvant treatment for stage III melanoma was approved in Sweden in 2018, with treatments freely available to all Swedish residents.
The SweMR is a population-based national register that has near-complete and detailed data on primary cutaneous melanomas, including nodal status and satellite and in-transit disease, and is linked to the national Cause of Death Registry. Helgadottir noted, however, that the SweMR does not contain any information on relapses or the nature of the oncologic treatment received by patients with melanoma.
Following her presentation, she was challenged by an audience member as to whether, on the basis of her findings, she would go back to following up with patients and treating at relapses.
“Maybe we should do that and believe in our own data, and we do. But still, the gold standard must always be the randomized clinical trial,” Helgadottir responded. “So I think, although that we believe in this data, we also want to see the results of the randomized studies.”
The audience member commented that she can see in the data from her own institution that they treat fewer and fewer patients with melanoma with adjuvant therapy by discussing it more thoroughly and being stricter on who should receive it.
Helgadottir agreed, adding that “based on this experience, we did not introduce it to stage II patients because it’s always harder to go back” once a group of patients has started to receive a treatment.
The research was supported by Regional Cancer Centres in Sweden and with grants from the Swedish Cancer Society, Region Stockholm, and the Cancer Research Funds of Radiumhemmet. Helgadottir declared having relationships with Bristol Myers Squibb, Merck Sharp & Dohme, Pierre Fabre, and Novartis.
The trial was supported by SkinVision. The researchers declared having no relevant financial relationships.
This article was previously published by Medscape.
Offering adjuvant therapy to patients with stage III melanoma offers no melanoma-specific or overall survival benefit, reveals extended follow-up from the first population-based national study to estimate the impact of the treatment.
Hildur Helgadottir, MD, PhD, presented the new findings at the 22nd European Association of Dermato-Oncology (EADO) Congress 2026 on April 24 and described the lead-up to the latest update on the study.
To investigate the impact of adjuvant treatment in patients with stage III melanoma, researchers initially conducted a study in which they used the Swedish Melanoma Registry (SweMR) to identify a precohort of those treated before the introduction of adjuvant therapy in 2018 and a postcohort of those treated subsequently, following both groups out to 2023, she explained.
The analysis revealed no significant difference in melanoma-specific survival between the two groups, at a hazard ratio of 0.92, nor in overall survival, at a hazard ratio of 0.93 (P = .60 for both). However, median follow-up differed between the groups, at 69 months vs 39 months for the precohort vs the postcohort.
Helgadottir, who is a senior research specialist at the Karolinska Comprehensive Cancer Center in Stockholm, Sweden, said that when the earlier results were presented at the European Society for Medical Oncology 2024, there was some criticism that the follow-up was not long enough and that there was no information on the actual adjuvant treatment received in the postcohort patients.
The researchers therefore extended their study out to 2024 to increase the median follow-up to 60 months vs 92 months in the postcohort group vs the precohort group.
They also focused patient selection on patients aged less than 75 years because exposure to adjuvant therapy in older patients was low and restricted the analysis to sentinel lymph node-positive stage IIIB-D cutaneous melanoma diagnosed between 2016 and 2020. This was because adjuvant exposure in stage IIIA disease was low, and patients with clinically detected stage III melanoma started to receive neoadjuvant therapy from 2022 onward.
The current analysis, which was recently published in the European Journal of Cancer, involved 287 patients in the precohort and 349 in the postcohort, who had a median age of 60.0 years and 61.0 years, respectively, and of whom 62.0% and 60.5%, respectively, were male. The groups were well balanced in terms of baseline disease characteristics.
Helgadottir explained that 73% of patients in the postcohort received some form of adjuvant treatment, with the majority treated with PD-1 inhibitors, and a smaller proportion given B-Raf serine-threonine kinase inhibitors. The main reasons for not giving adjuvant therapy were favorable tumor characteristics and the presence of comorbidities.
Five-year melanoma-specific survival rates in the precohorts and postcohorts were 71.4% vs 73.2%, at a hazard ratio adjusted for age, sex, and American Joint Committee on Cancer stage of 1.01 (P = .931). Five-year overall survival rates were 67.3% vs 70.1%, at an adjusted hazard ratio of 0.96 (P = .791).
Helgadottir showed that there were also no significant survival differences in any of the prespecified subgroups for neither melanoma-specific nor overall survival.
There were, again, no significant differences in survival outcomes between the two patient groups, she reported.
The latest results are similar to those from another study conducted in Netherlands and a Danish analysis, Helgadottir said.
Taken together, and “considering the side effects and the costs, it is possible that we will go back to closely following up our patients and treating only at relapse,” she said, “and optimally, of course, that will be already in the neoadjuvant setting.”
“And of course we will need biomarkers because there could be some patients that really need adjuvant treatment, but we need to identify these patients,” continued Helgadottir. Overall survival results from KEYNOTE-054, which compares pembrolizumab with placebo after resection of high-risk stage III melanoma, are awaited, she continued.
Helgadottir explained that adjuvant treatment for stage III melanoma was approved in Sweden in 2018, with treatments freely available to all Swedish residents.
The SweMR is a population-based national register that has near-complete and detailed data on primary cutaneous melanomas, including nodal status and satellite and in-transit disease, and is linked to the national Cause of Death Registry. Helgadottir noted, however, that the SweMR does not contain any information on relapses or the nature of the oncologic treatment received by patients with melanoma.
Following her presentation, she was challenged by an audience member as to whether, on the basis of her findings, she would go back to following up with patients and treating at relapses.
“Maybe we should do that and believe in our own data, and we do. But still, the gold standard must always be the randomized clinical trial,” Helgadottir responded. “So I think, although that we believe in this data, we also want to see the results of the randomized studies.”
The audience member commented that she can see in the data from her own institution that they treat fewer and fewer patients with melanoma with adjuvant therapy by discussing it more thoroughly and being stricter on who should receive it.
Helgadottir agreed, adding that “based on this experience, we did not introduce it to stage II patients because it’s always harder to go back” once a group of patients has started to receive a treatment.
The research was supported by Regional Cancer Centres in Sweden and with grants from the Swedish Cancer Society, Region Stockholm, and the Cancer Research Funds of Radiumhemmet. Helgadottir declared having relationships with Bristol Myers Squibb, Merck Sharp & Dohme, Pierre Fabre, and Novartis.
The trial was supported by SkinVision. The researchers declared having no relevant financial relationships.
This article was previously published by Medscape.
Wildfire Smoke Linked to Potential Risks for Some Cancers
Wildfire smoke exposure may be associated with increased risks for multiple types of cancer, suggests an analysis of prospective cohort data from over 90,000 individuals.
To determine how this widespread pollution might be affecting cancer risk, senior author Shuguang Leng, MBBS, PhD, and colleagues analyzed data from the Prostate, Lung, Colorectal, and Ovarian (PLCO) Cancer Screening Trial. That prospective national study enrolled approximately 154,000 participants between 1993 and 2001 and tracked cancer incidence through 2018. Of these, 91,460 participants had wildfire smoke exposure data and were included in the analysis.
During the 2006-2018 exposure period, the investigators identified incident cases of 242 ovarian, 800 colorectal, 896 bladder, 1696 hematopoietic, 1739 breast, and 1758 lung cancers, as well as 1127 melanoma cases. The median 36-month moving average for wildfire smoke PM2.5 (fine particulate matter) across the cohort was 0.37 µg/m3.
Wildfire smoke exposure was significantly associated with increased risks for lung, colorectal, breast, bladder, and hematopoietic cancer, according to the results of the study presented by Leng at American Association for Cancer Research (AACR) Annual Meeting 2026.
Each 1 µg/m3 increase in the 36-month moving average of wildfire smoke PM2.5 was associated with a 63% higher risk for hematopoietic cancer (HR, 1.63; 95% CI, 1.02-2.60), a nearly twofold higher risk for lung cancer (hazard ratio [HR], 1.92; 95% CI, 1.18-3.15), more than twofold higher risks for breast cancer (HR, 2.09; 95% CI, 1.34-3.26) and colorectal cancer (HR, 2.31; 95% CI, 1.11-4.81), and a more than threefold higher risk for bladder cancer (HR, 3.49; 95% CI, 1.66-7.34). No significant associations were observed for ovarian cancer or melanoma.
The investigators quantified wildfire smoke exposure at each participant’s residence on a monthly basis using three measures: near-ground wildfire smoke PM2.5, wildfire smoke black carbon, and satellite-derived wildfire smoke plume-day counts, with measurements available from 2006 until first cancer diagnosis or last contact.
Given evidence that 3 years of air pollution exposure can influence the development of epidermal growth factor receptor-positive lung adenocarcinoma, the team modeled exposure as a time-varying variable using 36-month moving averages preceding each month. HRs were estimated using Cox proportional hazards models stratified by study center, with restricted cubic splines applied to evaluate dose-response relationships. Models were adjusted for age, sex, race and ethnicity, education, smoking history, BMI, and trial arm.
All five cancer types linked with wildfire smoke exposure showed linear dose-response relationships, Leng noted, “which means the higher the exposure, the higher the cancer risk.”
Results based on wildfire smoke plume-day counts were generally consistent with those for PM2.5, while associations for black carbon exposure were observed only for breast and bladder cancers.
With wildfires on the rise, these findings suggest that the resulting smoke may become a “major driver for cancer burden in the US in the coming decades,” said Leng, of the University of New Mexico Comprehensive Cancer Center, Albuquerque, New Mexico.
“Wildfire smoke has become a major source of air pollution in the United States,” he continued. Large fires in the US are three times more common than they were 50 years ago, and the “tons of toxicants and particles” released by these fires “can travel hundreds of miles to affect communities far away.”
The investigators also conducted histology-specific analyses, finding that adenocarcinoma showed the strongest association with wildfire smoke among lung cancer subtypes. Among colorectal cancers, proximal tumors appeared more sensitive to wildfire smoke exposure, while among bladder cancers, the association was strongest for muscle-invasive disease.
Wildfire Smoke Exposure Expected to Rise
Under even the most conservative climate projections, wildfire smoke exposure in the US is expected to rise over the next 20-30 years, Leng said.
Annual average wildfire smoke PM2.5 levels, currently estimated at around 0.5 µg/m3, could rise to 1 µg/m3. Based on the study’s dose-response data, this would correspond to substantially greater cancer risk.
There will be “a much larger area” of the US exposed “at a much higher dose,” Leng predicted.
Mitigating the Risks of Wildfire Smoke
This is a “strong hypothesis-generating study,” Jun Wu, PhD, professor of environmental and occupational health at the UC Irvine Program in Public Health, Irvine, California, told Medscape Medical News.
“This is one of the first large, prospective US cohort studies to examine wildfire smoke specifically in relation to cancer risk, especially cancer sites beyond the lung,” Wu said. “A major strength is that the PLCO platform has around 91,000 participants with longitudinal follow-up and detailed covariate data, including smoking history, which is often a weak point in previous air pollution-cancer studies.”
According to Wu, who was not involved in the analysis but recently published data linking wildfire smoke exposure to preterm birth, the reported risks for colorectal, breast, bladder, and hematopoietic cancers represent novel contributions to the literature. However, she cautioned against viewing the specific HRs as a precise estimates of risk due to wide confidence intervals.
The findings should encourage individuals, public health officials, and clinicians to mitigate the risks of wildfire smoke, Wu said.
Specifically, she suggested that public health assessments expand beyond acute outcomes like emergency department visits to include long-term endpoints such as cancer, while community clean-air shelters need to be made more widely available.
She advised clinicians to incorporate wildfire exposure into routine patient histories and to provide vulnerable patients — such as those with asthma, chronic obstructive pulmonary disease, heart failure, or pregnancy — with smoke-season action plans.
Risk mitigation begins with awareness, according to Wu, who advised individuals check their local air quality index on AirNow.gov or PurpleAir.
On smoky days, she suggested prioritizing indoor air quality by keeping windows closed and running air purifiers. If going outside on such days is necessary, she suggested an N95 or KN95 mask, as these offer “meaningful protection,” while cloth and surgical masks do not.
These preventive steps may have once been out of the ordinary, Wu said, but the risk for wildfire smoke exposure is becoming a part of everyday life.
“The common thread is a shift in framing,” Wu said. “Wildfire smoke has traditionally been treated as an acute event, but the emerging evidence points to a chronic environmental exposure. Both our clinical and public health systems have room to grow into that reality.”
The analysis was funded by the National Institutes of Health. The investigators and Wu reported having no conflicts of interest.
This article was previously published on Medscape.
Wildfire smoke exposure may be associated with increased risks for multiple types of cancer, suggests an analysis of prospective cohort data from over 90,000 individuals.
To determine how this widespread pollution might be affecting cancer risk, senior author Shuguang Leng, MBBS, PhD, and colleagues analyzed data from the Prostate, Lung, Colorectal, and Ovarian (PLCO) Cancer Screening Trial. That prospective national study enrolled approximately 154,000 participants between 1993 and 2001 and tracked cancer incidence through 2018. Of these, 91,460 participants had wildfire smoke exposure data and were included in the analysis.
During the 2006-2018 exposure period, the investigators identified incident cases of 242 ovarian, 800 colorectal, 896 bladder, 1696 hematopoietic, 1739 breast, and 1758 lung cancers, as well as 1127 melanoma cases. The median 36-month moving average for wildfire smoke PM2.5 (fine particulate matter) across the cohort was 0.37 µg/m3.
Wildfire smoke exposure was significantly associated with increased risks for lung, colorectal, breast, bladder, and hematopoietic cancer, according to the results of the study presented by Leng at American Association for Cancer Research (AACR) Annual Meeting 2026.
Each 1 µg/m3 increase in the 36-month moving average of wildfire smoke PM2.5 was associated with a 63% higher risk for hematopoietic cancer (HR, 1.63; 95% CI, 1.02-2.60), a nearly twofold higher risk for lung cancer (hazard ratio [HR], 1.92; 95% CI, 1.18-3.15), more than twofold higher risks for breast cancer (HR, 2.09; 95% CI, 1.34-3.26) and colorectal cancer (HR, 2.31; 95% CI, 1.11-4.81), and a more than threefold higher risk for bladder cancer (HR, 3.49; 95% CI, 1.66-7.34). No significant associations were observed for ovarian cancer or melanoma.
The investigators quantified wildfire smoke exposure at each participant’s residence on a monthly basis using three measures: near-ground wildfire smoke PM2.5, wildfire smoke black carbon, and satellite-derived wildfire smoke plume-day counts, with measurements available from 2006 until first cancer diagnosis or last contact.
Given evidence that 3 years of air pollution exposure can influence the development of epidermal growth factor receptor-positive lung adenocarcinoma, the team modeled exposure as a time-varying variable using 36-month moving averages preceding each month. HRs were estimated using Cox proportional hazards models stratified by study center, with restricted cubic splines applied to evaluate dose-response relationships. Models were adjusted for age, sex, race and ethnicity, education, smoking history, BMI, and trial arm.
All five cancer types linked with wildfire smoke exposure showed linear dose-response relationships, Leng noted, “which means the higher the exposure, the higher the cancer risk.”
Results based on wildfire smoke plume-day counts were generally consistent with those for PM2.5, while associations for black carbon exposure were observed only for breast and bladder cancers.
With wildfires on the rise, these findings suggest that the resulting smoke may become a “major driver for cancer burden in the US in the coming decades,” said Leng, of the University of New Mexico Comprehensive Cancer Center, Albuquerque, New Mexico.
“Wildfire smoke has become a major source of air pollution in the United States,” he continued. Large fires in the US are three times more common than they were 50 years ago, and the “tons of toxicants and particles” released by these fires “can travel hundreds of miles to affect communities far away.”
The investigators also conducted histology-specific analyses, finding that adenocarcinoma showed the strongest association with wildfire smoke among lung cancer subtypes. Among colorectal cancers, proximal tumors appeared more sensitive to wildfire smoke exposure, while among bladder cancers, the association was strongest for muscle-invasive disease.
Wildfire Smoke Exposure Expected to Rise
Under even the most conservative climate projections, wildfire smoke exposure in the US is expected to rise over the next 20-30 years, Leng said.
Annual average wildfire smoke PM2.5 levels, currently estimated at around 0.5 µg/m3, could rise to 1 µg/m3. Based on the study’s dose-response data, this would correspond to substantially greater cancer risk.
There will be “a much larger area” of the US exposed “at a much higher dose,” Leng predicted.
Mitigating the Risks of Wildfire Smoke
This is a “strong hypothesis-generating study,” Jun Wu, PhD, professor of environmental and occupational health at the UC Irvine Program in Public Health, Irvine, California, told Medscape Medical News.
“This is one of the first large, prospective US cohort studies to examine wildfire smoke specifically in relation to cancer risk, especially cancer sites beyond the lung,” Wu said. “A major strength is that the PLCO platform has around 91,000 participants with longitudinal follow-up and detailed covariate data, including smoking history, which is often a weak point in previous air pollution-cancer studies.”
According to Wu, who was not involved in the analysis but recently published data linking wildfire smoke exposure to preterm birth, the reported risks for colorectal, breast, bladder, and hematopoietic cancers represent novel contributions to the literature. However, she cautioned against viewing the specific HRs as a precise estimates of risk due to wide confidence intervals.
The findings should encourage individuals, public health officials, and clinicians to mitigate the risks of wildfire smoke, Wu said.
Specifically, she suggested that public health assessments expand beyond acute outcomes like emergency department visits to include long-term endpoints such as cancer, while community clean-air shelters need to be made more widely available.
She advised clinicians to incorporate wildfire exposure into routine patient histories and to provide vulnerable patients — such as those with asthma, chronic obstructive pulmonary disease, heart failure, or pregnancy — with smoke-season action plans.
Risk mitigation begins with awareness, according to Wu, who advised individuals check their local air quality index on AirNow.gov or PurpleAir.
On smoky days, she suggested prioritizing indoor air quality by keeping windows closed and running air purifiers. If going outside on such days is necessary, she suggested an N95 or KN95 mask, as these offer “meaningful protection,” while cloth and surgical masks do not.
These preventive steps may have once been out of the ordinary, Wu said, but the risk for wildfire smoke exposure is becoming a part of everyday life.
“The common thread is a shift in framing,” Wu said. “Wildfire smoke has traditionally been treated as an acute event, but the emerging evidence points to a chronic environmental exposure. Both our clinical and public health systems have room to grow into that reality.”
The analysis was funded by the National Institutes of Health. The investigators and Wu reported having no conflicts of interest.
This article was previously published on Medscape.
Wildfire smoke exposure may be associated with increased risks for multiple types of cancer, suggests an analysis of prospective cohort data from over 90,000 individuals.
To determine how this widespread pollution might be affecting cancer risk, senior author Shuguang Leng, MBBS, PhD, and colleagues analyzed data from the Prostate, Lung, Colorectal, and Ovarian (PLCO) Cancer Screening Trial. That prospective national study enrolled approximately 154,000 participants between 1993 and 2001 and tracked cancer incidence through 2018. Of these, 91,460 participants had wildfire smoke exposure data and were included in the analysis.
During the 2006-2018 exposure period, the investigators identified incident cases of 242 ovarian, 800 colorectal, 896 bladder, 1696 hematopoietic, 1739 breast, and 1758 lung cancers, as well as 1127 melanoma cases. The median 36-month moving average for wildfire smoke PM2.5 (fine particulate matter) across the cohort was 0.37 µg/m3.
Wildfire smoke exposure was significantly associated with increased risks for lung, colorectal, breast, bladder, and hematopoietic cancer, according to the results of the study presented by Leng at American Association for Cancer Research (AACR) Annual Meeting 2026.
Each 1 µg/m3 increase in the 36-month moving average of wildfire smoke PM2.5 was associated with a 63% higher risk for hematopoietic cancer (HR, 1.63; 95% CI, 1.02-2.60), a nearly twofold higher risk for lung cancer (hazard ratio [HR], 1.92; 95% CI, 1.18-3.15), more than twofold higher risks for breast cancer (HR, 2.09; 95% CI, 1.34-3.26) and colorectal cancer (HR, 2.31; 95% CI, 1.11-4.81), and a more than threefold higher risk for bladder cancer (HR, 3.49; 95% CI, 1.66-7.34). No significant associations were observed for ovarian cancer or melanoma.
The investigators quantified wildfire smoke exposure at each participant’s residence on a monthly basis using three measures: near-ground wildfire smoke PM2.5, wildfire smoke black carbon, and satellite-derived wildfire smoke plume-day counts, with measurements available from 2006 until first cancer diagnosis or last contact.
Given evidence that 3 years of air pollution exposure can influence the development of epidermal growth factor receptor-positive lung adenocarcinoma, the team modeled exposure as a time-varying variable using 36-month moving averages preceding each month. HRs were estimated using Cox proportional hazards models stratified by study center, with restricted cubic splines applied to evaluate dose-response relationships. Models were adjusted for age, sex, race and ethnicity, education, smoking history, BMI, and trial arm.
All five cancer types linked with wildfire smoke exposure showed linear dose-response relationships, Leng noted, “which means the higher the exposure, the higher the cancer risk.”
Results based on wildfire smoke plume-day counts were generally consistent with those for PM2.5, while associations for black carbon exposure were observed only for breast and bladder cancers.
With wildfires on the rise, these findings suggest that the resulting smoke may become a “major driver for cancer burden in the US in the coming decades,” said Leng, of the University of New Mexico Comprehensive Cancer Center, Albuquerque, New Mexico.
“Wildfire smoke has become a major source of air pollution in the United States,” he continued. Large fires in the US are three times more common than they were 50 years ago, and the “tons of toxicants and particles” released by these fires “can travel hundreds of miles to affect communities far away.”
The investigators also conducted histology-specific analyses, finding that adenocarcinoma showed the strongest association with wildfire smoke among lung cancer subtypes. Among colorectal cancers, proximal tumors appeared more sensitive to wildfire smoke exposure, while among bladder cancers, the association was strongest for muscle-invasive disease.
Wildfire Smoke Exposure Expected to Rise
Under even the most conservative climate projections, wildfire smoke exposure in the US is expected to rise over the next 20-30 years, Leng said.
Annual average wildfire smoke PM2.5 levels, currently estimated at around 0.5 µg/m3, could rise to 1 µg/m3. Based on the study’s dose-response data, this would correspond to substantially greater cancer risk.
There will be “a much larger area” of the US exposed “at a much higher dose,” Leng predicted.
Mitigating the Risks of Wildfire Smoke
This is a “strong hypothesis-generating study,” Jun Wu, PhD, professor of environmental and occupational health at the UC Irvine Program in Public Health, Irvine, California, told Medscape Medical News.
“This is one of the first large, prospective US cohort studies to examine wildfire smoke specifically in relation to cancer risk, especially cancer sites beyond the lung,” Wu said. “A major strength is that the PLCO platform has around 91,000 participants with longitudinal follow-up and detailed covariate data, including smoking history, which is often a weak point in previous air pollution-cancer studies.”
According to Wu, who was not involved in the analysis but recently published data linking wildfire smoke exposure to preterm birth, the reported risks for colorectal, breast, bladder, and hematopoietic cancers represent novel contributions to the literature. However, she cautioned against viewing the specific HRs as a precise estimates of risk due to wide confidence intervals.
The findings should encourage individuals, public health officials, and clinicians to mitigate the risks of wildfire smoke, Wu said.
Specifically, she suggested that public health assessments expand beyond acute outcomes like emergency department visits to include long-term endpoints such as cancer, while community clean-air shelters need to be made more widely available.
She advised clinicians to incorporate wildfire exposure into routine patient histories and to provide vulnerable patients — such as those with asthma, chronic obstructive pulmonary disease, heart failure, or pregnancy — with smoke-season action plans.
Risk mitigation begins with awareness, according to Wu, who advised individuals check their local air quality index on AirNow.gov or PurpleAir.
On smoky days, she suggested prioritizing indoor air quality by keeping windows closed and running air purifiers. If going outside on such days is necessary, she suggested an N95 or KN95 mask, as these offer “meaningful protection,” while cloth and surgical masks do not.
These preventive steps may have once been out of the ordinary, Wu said, but the risk for wildfire smoke exposure is becoming a part of everyday life.
“The common thread is a shift in framing,” Wu said. “Wildfire smoke has traditionally been treated as an acute event, but the emerging evidence points to a chronic environmental exposure. Both our clinical and public health systems have room to grow into that reality.”
The analysis was funded by the National Institutes of Health. The investigators and Wu reported having no conflicts of interest.
This article was previously published on Medscape.
Many Veterans With H&N Cancer Face Access, Equity Barriers
TOPLINE: In 75,453 veterans with head and neck squamous cell carcinoma (HNSCC), 36.4% live in rural or highly rural areas and 32.0% have a national area deprivation index (ADI) ≥ 75. The average drive time to the nearest tertiary or complex US Department of Veterans Affairs (VA) facility is 94 minutes, highlighting potential access and equity barriers related to rurality, deprivation, and distance.
METHODOLOGY:
A retrospective descriptive study using nationwide VA data from fiscal years 2012 to 2022 identified 75,453 veterans with head and neck squamous cell carcinoma (HNSCC) by International Classification of Diseases, Ninth Revision and International Classification of Diseases, Tenth Revision codes.
Patients were grouped into 5 primary tumor subsites: oral cavity, oropharynx, hypopharynx, larynx, and nasopharynx.
Rurality was classified using Rural-Urban Commuting Area-derived urban, rural, and highly rural scores; socioeconomic disadvantage was measured with national ADI scores.
Travel burden was assessed using time and distance to the nearest primary, secondary, and tertiary VA facilities.
TAKEAWAY:
Oropharyngeal cancer (OPC) cases among veterans increased from 26.3% in 2012 to 46.0% in 2022, while laryngeal cancers decreased from 41.2% to 29.3%.
HNSCCs locations included 35.6% in the larynx, 34.4% in the oropharynx, 22.6% in the oral cavity 3.7% in the hypopharynx, and 3.7% in the nasopharynx.
Veterans with OPC were younger than non-OPC patients and more likely to be White; > 70% were current or former smokers.
IN PRACTICE: “Understanding the geographic and socioeconomic landscape of veterans with HNSCC will allow us to tease out the factors associated with poor outcomes and ultimately design interventions that target high-risk veteran populations to improve overall health outcomes,” the authors argued.
SOURCE: The study was led by researchers at the Veterans Affairs Pittsburgh Healthcare System. It was published online in Head & Neck.
LIMITATIONS: The inability to extract accurate data from a large dataset, challenges in obtaining tumor stage information due to varying documentation practices across physicians and treatment courses, and the inability to assess HPV or p16 data for the cohort represents significant limitations that may have impacted interpretation of results. Clinical outcome measures and cause of death assessment were limited in this national database, affecting the ability to draw conclusions regarding the impact of rurality, area deprivation, and travel time on outcomes.
DISCLOSURES: Chad Brenner reported holding several patents related to the development and use of circulating tumor DNA tests in patients with HNSCC. Jose P. Zevallos disclosed being the founder, equity shareholder, and board member of Droplet Biosciences and Echogenesis Therapeutics, serving as chief scientific advisor and shareholder of Vine Medical, and acting as a consultant for Merck and Johnson & Johnson. Matthew E. Spector reported serving as a consultant for Hologic. Kristen L. Zayan, Jennifer L. McCoy, Monique Y. Boudreaux-Kelly, Zachary Hahn, John Hotchkiss, and Jessica H. Maxwell declared no conflicts of interest.
This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication.
TOPLINE: In 75,453 veterans with head and neck squamous cell carcinoma (HNSCC), 36.4% live in rural or highly rural areas and 32.0% have a national area deprivation index (ADI) ≥ 75. The average drive time to the nearest tertiary or complex US Department of Veterans Affairs (VA) facility is 94 minutes, highlighting potential access and equity barriers related to rurality, deprivation, and distance.
METHODOLOGY:
A retrospective descriptive study using nationwide VA data from fiscal years 2012 to 2022 identified 75,453 veterans with head and neck squamous cell carcinoma (HNSCC) by International Classification of Diseases, Ninth Revision and International Classification of Diseases, Tenth Revision codes.
Patients were grouped into 5 primary tumor subsites: oral cavity, oropharynx, hypopharynx, larynx, and nasopharynx.
Rurality was classified using Rural-Urban Commuting Area-derived urban, rural, and highly rural scores; socioeconomic disadvantage was measured with national ADI scores.
Travel burden was assessed using time and distance to the nearest primary, secondary, and tertiary VA facilities.
TAKEAWAY:
Oropharyngeal cancer (OPC) cases among veterans increased from 26.3% in 2012 to 46.0% in 2022, while laryngeal cancers decreased from 41.2% to 29.3%.
HNSCCs locations included 35.6% in the larynx, 34.4% in the oropharynx, 22.6% in the oral cavity 3.7% in the hypopharynx, and 3.7% in the nasopharynx.
Veterans with OPC were younger than non-OPC patients and more likely to be White; > 70% were current or former smokers.
IN PRACTICE: “Understanding the geographic and socioeconomic landscape of veterans with HNSCC will allow us to tease out the factors associated with poor outcomes and ultimately design interventions that target high-risk veteran populations to improve overall health outcomes,” the authors argued.
SOURCE: The study was led by researchers at the Veterans Affairs Pittsburgh Healthcare System. It was published online in Head & Neck.
LIMITATIONS: The inability to extract accurate data from a large dataset, challenges in obtaining tumor stage information due to varying documentation practices across physicians and treatment courses, and the inability to assess HPV or p16 data for the cohort represents significant limitations that may have impacted interpretation of results. Clinical outcome measures and cause of death assessment were limited in this national database, affecting the ability to draw conclusions regarding the impact of rurality, area deprivation, and travel time on outcomes.
DISCLOSURES: Chad Brenner reported holding several patents related to the development and use of circulating tumor DNA tests in patients with HNSCC. Jose P. Zevallos disclosed being the founder, equity shareholder, and board member of Droplet Biosciences and Echogenesis Therapeutics, serving as chief scientific advisor and shareholder of Vine Medical, and acting as a consultant for Merck and Johnson & Johnson. Matthew E. Spector reported serving as a consultant for Hologic. Kristen L. Zayan, Jennifer L. McCoy, Monique Y. Boudreaux-Kelly, Zachary Hahn, John Hotchkiss, and Jessica H. Maxwell declared no conflicts of interest.
This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication.
TOPLINE: In 75,453 veterans with head and neck squamous cell carcinoma (HNSCC), 36.4% live in rural or highly rural areas and 32.0% have a national area deprivation index (ADI) ≥ 75. The average drive time to the nearest tertiary or complex US Department of Veterans Affairs (VA) facility is 94 minutes, highlighting potential access and equity barriers related to rurality, deprivation, and distance.
METHODOLOGY:
A retrospective descriptive study using nationwide VA data from fiscal years 2012 to 2022 identified 75,453 veterans with head and neck squamous cell carcinoma (HNSCC) by International Classification of Diseases, Ninth Revision and International Classification of Diseases, Tenth Revision codes.
Patients were grouped into 5 primary tumor subsites: oral cavity, oropharynx, hypopharynx, larynx, and nasopharynx.
Rurality was classified using Rural-Urban Commuting Area-derived urban, rural, and highly rural scores; socioeconomic disadvantage was measured with national ADI scores.
Travel burden was assessed using time and distance to the nearest primary, secondary, and tertiary VA facilities.
TAKEAWAY:
Oropharyngeal cancer (OPC) cases among veterans increased from 26.3% in 2012 to 46.0% in 2022, while laryngeal cancers decreased from 41.2% to 29.3%.
HNSCCs locations included 35.6% in the larynx, 34.4% in the oropharynx, 22.6% in the oral cavity 3.7% in the hypopharynx, and 3.7% in the nasopharynx.
Veterans with OPC were younger than non-OPC patients and more likely to be White; > 70% were current or former smokers.
IN PRACTICE: “Understanding the geographic and socioeconomic landscape of veterans with HNSCC will allow us to tease out the factors associated with poor outcomes and ultimately design interventions that target high-risk veteran populations to improve overall health outcomes,” the authors argued.
SOURCE: The study was led by researchers at the Veterans Affairs Pittsburgh Healthcare System. It was published online in Head & Neck.
LIMITATIONS: The inability to extract accurate data from a large dataset, challenges in obtaining tumor stage information due to varying documentation practices across physicians and treatment courses, and the inability to assess HPV or p16 data for the cohort represents significant limitations that may have impacted interpretation of results. Clinical outcome measures and cause of death assessment were limited in this national database, affecting the ability to draw conclusions regarding the impact of rurality, area deprivation, and travel time on outcomes.
DISCLOSURES: Chad Brenner reported holding several patents related to the development and use of circulating tumor DNA tests in patients with HNSCC. Jose P. Zevallos disclosed being the founder, equity shareholder, and board member of Droplet Biosciences and Echogenesis Therapeutics, serving as chief scientific advisor and shareholder of Vine Medical, and acting as a consultant for Merck and Johnson & Johnson. Matthew E. Spector reported serving as a consultant for Hologic. Kristen L. Zayan, Jennifer L. McCoy, Monique Y. Boudreaux-Kelly, Zachary Hahn, John Hotchkiss, and Jessica H. Maxwell declared no conflicts of interest.
This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication.
Does Marital Status Affect Cancer Risk?
Adults who have never been married had a higher cancer risk than their married or previously married peers, with patterns observed across many major cancer types and particularly strong for cancers linked to infections, smoking, and reproductive factors, new data suggest.
The findings are based on a large, population-based cancer registry analysis of more than 4 million cases, making it the largest study of its kind in the US.
First author Paulo Pinheiro, PhD, cautioned, however, that the study does not suggest that marriage itself is protective.
"As with any observational study, we cannot establish causation, and unmeasured factors may contribute to the associations,” said Pinheiro, with Sylvester Comprehensive Cancer Center, University of Miami Health System, in Miami.
Marital status may, however, help identify groups with different patterns of cancer risk, which likely reflect social and lifestyle behaviors rather than a direct causal effect, Pinheiro explained.
Married individuals, for instance, are less likely to smoke — a known cancer risk factor — and more likely to have children and undergo cancer screening, which can influence cancer incidence through reproductive effects and screening, including earlier detection and removal of precancerous lesions.
"Marital status is therefore best understood as a marker of those accumulated factors," Pinheiro said.
The study was published online on April 8 in Cancer Research Communications.
Filling a Data Gap
Marriage has consistently been associated with earlier cancer diagnosis and improved survival among those with cancer, but its relationship to cancer incidence remains less clear.
To address that gap, researchers analyzed data from 12 US states that included demographic and cancer information for more than 4.2 million cancer cases diagnosed between 2015 and 2022.
The analysis included more than 500 million person-years at risk in adults 30 years or older, representing an annual population of more than 62 million. The never-married group comprised about 19% of the total population — 22% were men and 17% were women.
Compared with ever-married individuals, never-married men and women had higher cancer incidence across many major cancer types, racial and ethnic groups, and age groups.
Overall, cancer rates were about 68% higher in never-married men and 85% higher in never-married women compared with their ever-married counterparts (incidence rate ratios [IRRs], 1.68 and 1.85, respectively).
Never-married Black men had the highest overall cancer rates (1600 per 100,000), whereas married Black men had significantly lower rates than married White men (752.6 vs 836.2 per 100,000), suggesting complex interactions between marital status and structural factors, the researchers noted.
Site-specific patterns revealed clues to potential mechanisms linking marital status and cancer.
Compared with ever-married individuals, never-married people had the highest excess risks for human papillomavirus-related cancers — about five times higher for anal cancer in men (IRR, 5.04) and approaching three times higher for cervical cancer in women (IRR, 2.64).
Other strong associations between never-married individuals and cancer risk were observed for smoking-related cancers, including lung (IRR, 2.1 for both men and women) and esophageal cancers (IRR, 2.4 in men and 2.7 in women), and malignancies including liver (IRR, 2.3 for both men and women), bladder (IRR, 2.3 women only), and colorectal (IRR, 2.1 women only) cancers.
Among women, the higher incidence of ovarian and uterine cancers (IRR, 2.4 for both) among the never-married group supports the influence of reproductive mechanisms, such as giving birth, on cancer risk.
The association between marital status and cancer risk was weaker for breast, prostate, and thyroid cancers (with IRRs < 2), suggesting potentially less modifiable etiologies.
Overall, “methodologically, it is quite robust, particularly in its clear framing of ever- vs never-married individuals and the use of standardized incidence rates and regression modeling,” Pinheiro said.
The analysis did not adjust for individual-level risk factors such as smoking, diet, physical activity, or alcohol use — factors that may partly explain the observed associations.
Adjusting for these lifestyle and health behavior factors at the individual level would require detailed information on these behaviors, and “data at that level simply do not exist at a national scale,” Pinheiro said. It would also “obscure the real-world pattern we are trying to measure.”
Gilbert Welch, MD, noted that adjusting for these individual-level cancer risk factors “would certainly attenuate the associations.”
“That said, it wouldn’t be crazy to suggest marriage drives some of these risk factors,” said Welch, general internist and senior investigator at the Center for Surgery and Public Health, Brigham and Women’s Hospital, Boston. Married couples benefit from combined incomes and shared expenses, and “may well help support individuals in making healthy choices (like not smoking).”
But, he added, “it would be crazy to suggest that the reason to get married is to lower cancer risk.”
The authors flagged a study limitation — the fact that ever-married status lumps together people who are currently married, divorced, and widowed, and these groups may have different risk profiles. Additionally, “individuals in strained or abusive marriages may not experience protective social benefits,” while those in long-term cohabiting relationships classified as never-married may experience high levels of support, the authors wrote.
Overall, though, Pinheiro clarified that the main finding is “not about marriage as a causal agent, but about identifying a large population group, the never-married, with a consistently higher cancer burden that has been largely overlooked in public health practice and cancer prevention efforts.”
Linda Waite, professor, Department of Sociology, University of Chicago, who wasn’t involved in the study, wasn’t surprised by the findings. For men, not having a spouse may “disadvantage” them in ways that might increase cancer risk.
Unmarried men are more likely to drink and smoke heavily, which increase cancer risk, she said. A spouse may also influence health awareness and decisions, such as noticing suspicious symptoms, pushing their partner to see a doctor, or helping manage their partner’s care.
Plus, “for both men and women, having a spouse may improve medical care by giving each partner a companion for medical appointments and another person to help manage risks of disease,” Waite said.
The study had no commercial funding. Pinheiro and Waite had no relevant disclosures.
A version of this article first appeared on Medscape.com.
Adults who have never been married had a higher cancer risk than their married or previously married peers, with patterns observed across many major cancer types and particularly strong for cancers linked to infections, smoking, and reproductive factors, new data suggest.
The findings are based on a large, population-based cancer registry analysis of more than 4 million cases, making it the largest study of its kind in the US.
First author Paulo Pinheiro, PhD, cautioned, however, that the study does not suggest that marriage itself is protective.
"As with any observational study, we cannot establish causation, and unmeasured factors may contribute to the associations,” said Pinheiro, with Sylvester Comprehensive Cancer Center, University of Miami Health System, in Miami.
Marital status may, however, help identify groups with different patterns of cancer risk, which likely reflect social and lifestyle behaviors rather than a direct causal effect, Pinheiro explained.
Married individuals, for instance, are less likely to smoke — a known cancer risk factor — and more likely to have children and undergo cancer screening, which can influence cancer incidence through reproductive effects and screening, including earlier detection and removal of precancerous lesions.
"Marital status is therefore best understood as a marker of those accumulated factors," Pinheiro said.
The study was published online on April 8 in Cancer Research Communications.
Filling a Data Gap
Marriage has consistently been associated with earlier cancer diagnosis and improved survival among those with cancer, but its relationship to cancer incidence remains less clear.
To address that gap, researchers analyzed data from 12 US states that included demographic and cancer information for more than 4.2 million cancer cases diagnosed between 2015 and 2022.
The analysis included more than 500 million person-years at risk in adults 30 years or older, representing an annual population of more than 62 million. The never-married group comprised about 19% of the total population — 22% were men and 17% were women.
Compared with ever-married individuals, never-married men and women had higher cancer incidence across many major cancer types, racial and ethnic groups, and age groups.
Overall, cancer rates were about 68% higher in never-married men and 85% higher in never-married women compared with their ever-married counterparts (incidence rate ratios [IRRs], 1.68 and 1.85, respectively).
Never-married Black men had the highest overall cancer rates (1600 per 100,000), whereas married Black men had significantly lower rates than married White men (752.6 vs 836.2 per 100,000), suggesting complex interactions between marital status and structural factors, the researchers noted.
Site-specific patterns revealed clues to potential mechanisms linking marital status and cancer.
Compared with ever-married individuals, never-married people had the highest excess risks for human papillomavirus-related cancers — about five times higher for anal cancer in men (IRR, 5.04) and approaching three times higher for cervical cancer in women (IRR, 2.64).
Other strong associations between never-married individuals and cancer risk were observed for smoking-related cancers, including lung (IRR, 2.1 for both men and women) and esophageal cancers (IRR, 2.4 in men and 2.7 in women), and malignancies including liver (IRR, 2.3 for both men and women), bladder (IRR, 2.3 women only), and colorectal (IRR, 2.1 women only) cancers.
Among women, the higher incidence of ovarian and uterine cancers (IRR, 2.4 for both) among the never-married group supports the influence of reproductive mechanisms, such as giving birth, on cancer risk.
The association between marital status and cancer risk was weaker for breast, prostate, and thyroid cancers (with IRRs < 2), suggesting potentially less modifiable etiologies.
Overall, “methodologically, it is quite robust, particularly in its clear framing of ever- vs never-married individuals and the use of standardized incidence rates and regression modeling,” Pinheiro said.
The analysis did not adjust for individual-level risk factors such as smoking, diet, physical activity, or alcohol use — factors that may partly explain the observed associations.
Adjusting for these lifestyle and health behavior factors at the individual level would require detailed information on these behaviors, and “data at that level simply do not exist at a national scale,” Pinheiro said. It would also “obscure the real-world pattern we are trying to measure.”
Gilbert Welch, MD, noted that adjusting for these individual-level cancer risk factors “would certainly attenuate the associations.”
“That said, it wouldn’t be crazy to suggest marriage drives some of these risk factors,” said Welch, general internist and senior investigator at the Center for Surgery and Public Health, Brigham and Women’s Hospital, Boston. Married couples benefit from combined incomes and shared expenses, and “may well help support individuals in making healthy choices (like not smoking).”
But, he added, “it would be crazy to suggest that the reason to get married is to lower cancer risk.”
The authors flagged a study limitation — the fact that ever-married status lumps together people who are currently married, divorced, and widowed, and these groups may have different risk profiles. Additionally, “individuals in strained or abusive marriages may not experience protective social benefits,” while those in long-term cohabiting relationships classified as never-married may experience high levels of support, the authors wrote.
Overall, though, Pinheiro clarified that the main finding is “not about marriage as a causal agent, but about identifying a large population group, the never-married, with a consistently higher cancer burden that has been largely overlooked in public health practice and cancer prevention efforts.”
Linda Waite, professor, Department of Sociology, University of Chicago, who wasn’t involved in the study, wasn’t surprised by the findings. For men, not having a spouse may “disadvantage” them in ways that might increase cancer risk.
Unmarried men are more likely to drink and smoke heavily, which increase cancer risk, she said. A spouse may also influence health awareness and decisions, such as noticing suspicious symptoms, pushing their partner to see a doctor, or helping manage their partner’s care.
Plus, “for both men and women, having a spouse may improve medical care by giving each partner a companion for medical appointments and another person to help manage risks of disease,” Waite said.
The study had no commercial funding. Pinheiro and Waite had no relevant disclosures.
A version of this article first appeared on Medscape.com.
Adults who have never been married had a higher cancer risk than their married or previously married peers, with patterns observed across many major cancer types and particularly strong for cancers linked to infections, smoking, and reproductive factors, new data suggest.
The findings are based on a large, population-based cancer registry analysis of more than 4 million cases, making it the largest study of its kind in the US.
First author Paulo Pinheiro, PhD, cautioned, however, that the study does not suggest that marriage itself is protective.
"As with any observational study, we cannot establish causation, and unmeasured factors may contribute to the associations,” said Pinheiro, with Sylvester Comprehensive Cancer Center, University of Miami Health System, in Miami.
Marital status may, however, help identify groups with different patterns of cancer risk, which likely reflect social and lifestyle behaviors rather than a direct causal effect, Pinheiro explained.
Married individuals, for instance, are less likely to smoke — a known cancer risk factor — and more likely to have children and undergo cancer screening, which can influence cancer incidence through reproductive effects and screening, including earlier detection and removal of precancerous lesions.
"Marital status is therefore best understood as a marker of those accumulated factors," Pinheiro said.
The study was published online on April 8 in Cancer Research Communications.
Filling a Data Gap
Marriage has consistently been associated with earlier cancer diagnosis and improved survival among those with cancer, but its relationship to cancer incidence remains less clear.
To address that gap, researchers analyzed data from 12 US states that included demographic and cancer information for more than 4.2 million cancer cases diagnosed between 2015 and 2022.
The analysis included more than 500 million person-years at risk in adults 30 years or older, representing an annual population of more than 62 million. The never-married group comprised about 19% of the total population — 22% were men and 17% were women.
Compared with ever-married individuals, never-married men and women had higher cancer incidence across many major cancer types, racial and ethnic groups, and age groups.
Overall, cancer rates were about 68% higher in never-married men and 85% higher in never-married women compared with their ever-married counterparts (incidence rate ratios [IRRs], 1.68 and 1.85, respectively).
Never-married Black men had the highest overall cancer rates (1600 per 100,000), whereas married Black men had significantly lower rates than married White men (752.6 vs 836.2 per 100,000), suggesting complex interactions between marital status and structural factors, the researchers noted.
Site-specific patterns revealed clues to potential mechanisms linking marital status and cancer.
Compared with ever-married individuals, never-married people had the highest excess risks for human papillomavirus-related cancers — about five times higher for anal cancer in men (IRR, 5.04) and approaching three times higher for cervical cancer in women (IRR, 2.64).
Other strong associations between never-married individuals and cancer risk were observed for smoking-related cancers, including lung (IRR, 2.1 for both men and women) and esophageal cancers (IRR, 2.4 in men and 2.7 in women), and malignancies including liver (IRR, 2.3 for both men and women), bladder (IRR, 2.3 women only), and colorectal (IRR, 2.1 women only) cancers.
Among women, the higher incidence of ovarian and uterine cancers (IRR, 2.4 for both) among the never-married group supports the influence of reproductive mechanisms, such as giving birth, on cancer risk.
The association between marital status and cancer risk was weaker for breast, prostate, and thyroid cancers (with IRRs < 2), suggesting potentially less modifiable etiologies.
Overall, “methodologically, it is quite robust, particularly in its clear framing of ever- vs never-married individuals and the use of standardized incidence rates and regression modeling,” Pinheiro said.
The analysis did not adjust for individual-level risk factors such as smoking, diet, physical activity, or alcohol use — factors that may partly explain the observed associations.
Adjusting for these lifestyle and health behavior factors at the individual level would require detailed information on these behaviors, and “data at that level simply do not exist at a national scale,” Pinheiro said. It would also “obscure the real-world pattern we are trying to measure.”
Gilbert Welch, MD, noted that adjusting for these individual-level cancer risk factors “would certainly attenuate the associations.”
“That said, it wouldn’t be crazy to suggest marriage drives some of these risk factors,” said Welch, general internist and senior investigator at the Center for Surgery and Public Health, Brigham and Women’s Hospital, Boston. Married couples benefit from combined incomes and shared expenses, and “may well help support individuals in making healthy choices (like not smoking).”
But, he added, “it would be crazy to suggest that the reason to get married is to lower cancer risk.”
The authors flagged a study limitation — the fact that ever-married status lumps together people who are currently married, divorced, and widowed, and these groups may have different risk profiles. Additionally, “individuals in strained or abusive marriages may not experience protective social benefits,” while those in long-term cohabiting relationships classified as never-married may experience high levels of support, the authors wrote.
Overall, though, Pinheiro clarified that the main finding is “not about marriage as a causal agent, but about identifying a large population group, the never-married, with a consistently higher cancer burden that has been largely overlooked in public health practice and cancer prevention efforts.”
Linda Waite, professor, Department of Sociology, University of Chicago, who wasn’t involved in the study, wasn’t surprised by the findings. For men, not having a spouse may “disadvantage” them in ways that might increase cancer risk.
Unmarried men are more likely to drink and smoke heavily, which increase cancer risk, she said. A spouse may also influence health awareness and decisions, such as noticing suspicious symptoms, pushing their partner to see a doctor, or helping manage their partner’s care.
Plus, “for both men and women, having a spouse may improve medical care by giving each partner a companion for medical appointments and another person to help manage risks of disease,” Waite said.
The study had no commercial funding. Pinheiro and Waite had no relevant disclosures.
A version of this article first appeared on Medscape.com.
In Early-Stage DLBCL, One Size No Longer Fits All
In Early-Stage DLBCL, One Size No Longer Fits All
SAN FRANCISCO – The treatment of early-stage diffuse large B-cell lymphoma (DLBCL) is evolving after decades of failed attempts to improve on the standard treatment of R-CHOP (rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisone), a hematologist-oncologist said at the Association of Veterans Affairs (VA) Hematology/Oncology regional meeting on lymphoma on March 21.
A combination therapy known as pola-R-CHP is now the preferred option for many patients but has limited additional benefit, said Solomon A. Graf, MD, of the University of Washington and VA Puget Sound Health Care System. Pola-R-CHP is a modified regimen of R-CHOP that replaced vincristine in R-CHOP with polatuzumab vedotin.
The keys to treatment, Graf said, include consideration of disease variations that can affect therapy efficacy and understanding the special needs of older patients.
Understanding DLBCL
DLBCL is the most common non-Hodgkin lymphoma in the US with about 30,000 new cases per year; the median age at diagnosis is 67 years, Graf said.
“The overall incidence of DLBCL has been relatively stable over the last decades,” he said. “But gratifyingly, the rate of death from this disease has steadily been declining since about the turn of the century.”
Pola-R-CHP: A New Standard, Significant Limitations
From 2002-2022, “many attempts to improve on first-line DLBCL therapy did not pan out,” Graf said, as more than a dozen large phase 3 trials failed to dethrone R-CHOP as the standard. Most of the trials attempted to add an agent to R-CHOP but showed no additional benefit.
Then, in 2021, the landmark POLARIX study was published. The double-blind, randomized trial on the new regime showed a progression-free survival benefit (PFS) vs R-CHOP (76.7% vs 70.2% at 2 years, respectively). Safety profiles were similar between the 2 combination therapies.
However, overall survival (OS) did not differ.
"Pola-R-CHP is now considered a preferred standard, despite no overall survival benefit and despite increased upfront cost,” Graf said. (A 2023 analysis found that pola-R-CHP is more cost-effective than R-CHOP in DLBCL.)
Pola-R-CHP or Not Pola-R-CHP?
Pola-R-CHP is not for all patients with DLBCL. In advanced cases, Graf said, genomic analyses provide important information that helps clinicians understand whether patients will fare better with R-CHOP. Cell-of-origin classifications include germinal center B-cell like (GCB), activated B-cell like (ABC), and unclassifiable.
“If it’s GCB type, there's no clear benefit for Pola-R-CHP,” Graf said. “On the other hand, the ABC subtype does much better when treated with Pola-R-CHP.”
Graf highlighted the recently updated VA Oncology Clinical Pathway for DLBCL, which recommends cell-of-origin testing by the Hans algorithm for certain advanced-stage patients. The guidelines suggest R-CHOP for GCB-type patients and Pola-R-CHP for non–GCB-type patients. However, he cautioned that the Hans algorithm comes with an increased risk of misclassification.
Early-Stage Disease: Radiation or No Radiation?
About 25% to 30% of patients have stage I or II disease, and the landmark 1998 SWOG trial initially suggested that 3 cycles of CHOP plus radiation had superior PFS and OS compared with 8 cycles of CHOP alone, Graf said. This trial was conducted prior to the R-CHOP era. However, follow-up revealed that the benefit vanished over time and the risk of secondary cancers grew. “Both strategies are perfectly viable, but there isn’t as much of a preference anymore,” Graf said.
A pair of recent trials – a 2019 European study and a 2020 US study – support eliminating radiation and lowering the number of cycles of therapy in certain patients, he said.
Managing Older Patients
Patients with DLBCL tend to be older, Graf said, and many have comorbidities and other limitations. A standard course of 6 cycles of therapy may be too much for them, he said. Graf highlighted the Elderly Prognostic Index, a tool created by an Italian group that allows clinicians to predict outcomes based on patient fitness levels.
Graf offered additional guidance for this population:
- Consider corticosteroids in the prephase setting, which can be “very valuable” and improve a patient’s ECOG performance status, “giving you better confidence about proceeding with more standard therapy.”
- Include anthracycline-based therapies such as R-CHOP if appropriate, such as in patients who are focused on living longer, since they “are really crucial to achieving cure in patients with DLBCL.” Graf noted that he has “a low threshold to involve cardiology if there’s anthracycline use and some underlying cardiac comorbidity.”
- Adjust dosage as appropriate: “You can adjust in the middle, be rather flexible and creative about these doses and dosing levels as you get going with your patient and see just what they can tolerate,” he said. “Sometimes you can ramp it up over the course, and sometimes you have to ramp it down to respond to toxicities.”
- Be aware that older patients are at much higher risk of suffering from toxicities due to the vincristine component of R-CHOP. These include neurotoxicities and constipation.
Graf highlighted the phase 3 Polar Bear study, which may offer more insight into therapy options in patients aged ≥ 75 years who are frail or those aged ≥ 80 years. The trial is scheduled to end in early 2027.
Graf discloses relationships with Janssen, TG Therapeutics, BeOne, AstraZeneca, Genentech, Incyte, Eli Lilly, and Pfizer.
SAN FRANCISCO – The treatment of early-stage diffuse large B-cell lymphoma (DLBCL) is evolving after decades of failed attempts to improve on the standard treatment of R-CHOP (rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisone), a hematologist-oncologist said at the Association of Veterans Affairs (VA) Hematology/Oncology regional meeting on lymphoma on March 21.
A combination therapy known as pola-R-CHP is now the preferred option for many patients but has limited additional benefit, said Solomon A. Graf, MD, of the University of Washington and VA Puget Sound Health Care System. Pola-R-CHP is a modified regimen of R-CHOP that replaced vincristine in R-CHOP with polatuzumab vedotin.
The keys to treatment, Graf said, include consideration of disease variations that can affect therapy efficacy and understanding the special needs of older patients.
Understanding DLBCL
DLBCL is the most common non-Hodgkin lymphoma in the US with about 30,000 new cases per year; the median age at diagnosis is 67 years, Graf said.
“The overall incidence of DLBCL has been relatively stable over the last decades,” he said. “But gratifyingly, the rate of death from this disease has steadily been declining since about the turn of the century.”
Pola-R-CHP: A New Standard, Significant Limitations
From 2002-2022, “many attempts to improve on first-line DLBCL therapy did not pan out,” Graf said, as more than a dozen large phase 3 trials failed to dethrone R-CHOP as the standard. Most of the trials attempted to add an agent to R-CHOP but showed no additional benefit.
Then, in 2021, the landmark POLARIX study was published. The double-blind, randomized trial on the new regime showed a progression-free survival benefit (PFS) vs R-CHOP (76.7% vs 70.2% at 2 years, respectively). Safety profiles were similar between the 2 combination therapies.
However, overall survival (OS) did not differ.
"Pola-R-CHP is now considered a preferred standard, despite no overall survival benefit and despite increased upfront cost,” Graf said. (A 2023 analysis found that pola-R-CHP is more cost-effective than R-CHOP in DLBCL.)
Pola-R-CHP or Not Pola-R-CHP?
Pola-R-CHP is not for all patients with DLBCL. In advanced cases, Graf said, genomic analyses provide important information that helps clinicians understand whether patients will fare better with R-CHOP. Cell-of-origin classifications include germinal center B-cell like (GCB), activated B-cell like (ABC), and unclassifiable.
“If it’s GCB type, there's no clear benefit for Pola-R-CHP,” Graf said. “On the other hand, the ABC subtype does much better when treated with Pola-R-CHP.”
Graf highlighted the recently updated VA Oncology Clinical Pathway for DLBCL, which recommends cell-of-origin testing by the Hans algorithm for certain advanced-stage patients. The guidelines suggest R-CHOP for GCB-type patients and Pola-R-CHP for non–GCB-type patients. However, he cautioned that the Hans algorithm comes with an increased risk of misclassification.
Early-Stage Disease: Radiation or No Radiation?
About 25% to 30% of patients have stage I or II disease, and the landmark 1998 SWOG trial initially suggested that 3 cycles of CHOP plus radiation had superior PFS and OS compared with 8 cycles of CHOP alone, Graf said. This trial was conducted prior to the R-CHOP era. However, follow-up revealed that the benefit vanished over time and the risk of secondary cancers grew. “Both strategies are perfectly viable, but there isn’t as much of a preference anymore,” Graf said.
A pair of recent trials – a 2019 European study and a 2020 US study – support eliminating radiation and lowering the number of cycles of therapy in certain patients, he said.
Managing Older Patients
Patients with DLBCL tend to be older, Graf said, and many have comorbidities and other limitations. A standard course of 6 cycles of therapy may be too much for them, he said. Graf highlighted the Elderly Prognostic Index, a tool created by an Italian group that allows clinicians to predict outcomes based on patient fitness levels.
Graf offered additional guidance for this population:
- Consider corticosteroids in the prephase setting, which can be “very valuable” and improve a patient’s ECOG performance status, “giving you better confidence about proceeding with more standard therapy.”
- Include anthracycline-based therapies such as R-CHOP if appropriate, such as in patients who are focused on living longer, since they “are really crucial to achieving cure in patients with DLBCL.” Graf noted that he has “a low threshold to involve cardiology if there’s anthracycline use and some underlying cardiac comorbidity.”
- Adjust dosage as appropriate: “You can adjust in the middle, be rather flexible and creative about these doses and dosing levels as you get going with your patient and see just what they can tolerate,” he said. “Sometimes you can ramp it up over the course, and sometimes you have to ramp it down to respond to toxicities.”
- Be aware that older patients are at much higher risk of suffering from toxicities due to the vincristine component of R-CHOP. These include neurotoxicities and constipation.
Graf highlighted the phase 3 Polar Bear study, which may offer more insight into therapy options in patients aged ≥ 75 years who are frail or those aged ≥ 80 years. The trial is scheduled to end in early 2027.
Graf discloses relationships with Janssen, TG Therapeutics, BeOne, AstraZeneca, Genentech, Incyte, Eli Lilly, and Pfizer.
SAN FRANCISCO – The treatment of early-stage diffuse large B-cell lymphoma (DLBCL) is evolving after decades of failed attempts to improve on the standard treatment of R-CHOP (rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisone), a hematologist-oncologist said at the Association of Veterans Affairs (VA) Hematology/Oncology regional meeting on lymphoma on March 21.
A combination therapy known as pola-R-CHP is now the preferred option for many patients but has limited additional benefit, said Solomon A. Graf, MD, of the University of Washington and VA Puget Sound Health Care System. Pola-R-CHP is a modified regimen of R-CHOP that replaced vincristine in R-CHOP with polatuzumab vedotin.
The keys to treatment, Graf said, include consideration of disease variations that can affect therapy efficacy and understanding the special needs of older patients.
Understanding DLBCL
DLBCL is the most common non-Hodgkin lymphoma in the US with about 30,000 new cases per year; the median age at diagnosis is 67 years, Graf said.
“The overall incidence of DLBCL has been relatively stable over the last decades,” he said. “But gratifyingly, the rate of death from this disease has steadily been declining since about the turn of the century.”
Pola-R-CHP: A New Standard, Significant Limitations
From 2002-2022, “many attempts to improve on first-line DLBCL therapy did not pan out,” Graf said, as more than a dozen large phase 3 trials failed to dethrone R-CHOP as the standard. Most of the trials attempted to add an agent to R-CHOP but showed no additional benefit.
Then, in 2021, the landmark POLARIX study was published. The double-blind, randomized trial on the new regime showed a progression-free survival benefit (PFS) vs R-CHOP (76.7% vs 70.2% at 2 years, respectively). Safety profiles were similar between the 2 combination therapies.
However, overall survival (OS) did not differ.
"Pola-R-CHP is now considered a preferred standard, despite no overall survival benefit and despite increased upfront cost,” Graf said. (A 2023 analysis found that pola-R-CHP is more cost-effective than R-CHOP in DLBCL.)
Pola-R-CHP or Not Pola-R-CHP?
Pola-R-CHP is not for all patients with DLBCL. In advanced cases, Graf said, genomic analyses provide important information that helps clinicians understand whether patients will fare better with R-CHOP. Cell-of-origin classifications include germinal center B-cell like (GCB), activated B-cell like (ABC), and unclassifiable.
“If it’s GCB type, there's no clear benefit for Pola-R-CHP,” Graf said. “On the other hand, the ABC subtype does much better when treated with Pola-R-CHP.”
Graf highlighted the recently updated VA Oncology Clinical Pathway for DLBCL, which recommends cell-of-origin testing by the Hans algorithm for certain advanced-stage patients. The guidelines suggest R-CHOP for GCB-type patients and Pola-R-CHP for non–GCB-type patients. However, he cautioned that the Hans algorithm comes with an increased risk of misclassification.
Early-Stage Disease: Radiation or No Radiation?
About 25% to 30% of patients have stage I or II disease, and the landmark 1998 SWOG trial initially suggested that 3 cycles of CHOP plus radiation had superior PFS and OS compared with 8 cycles of CHOP alone, Graf said. This trial was conducted prior to the R-CHOP era. However, follow-up revealed that the benefit vanished over time and the risk of secondary cancers grew. “Both strategies are perfectly viable, but there isn’t as much of a preference anymore,” Graf said.
A pair of recent trials – a 2019 European study and a 2020 US study – support eliminating radiation and lowering the number of cycles of therapy in certain patients, he said.
Managing Older Patients
Patients with DLBCL tend to be older, Graf said, and many have comorbidities and other limitations. A standard course of 6 cycles of therapy may be too much for them, he said. Graf highlighted the Elderly Prognostic Index, a tool created by an Italian group that allows clinicians to predict outcomes based on patient fitness levels.
Graf offered additional guidance for this population:
- Consider corticosteroids in the prephase setting, which can be “very valuable” and improve a patient’s ECOG performance status, “giving you better confidence about proceeding with more standard therapy.”
- Include anthracycline-based therapies such as R-CHOP if appropriate, such as in patients who are focused on living longer, since they “are really crucial to achieving cure in patients with DLBCL.” Graf noted that he has “a low threshold to involve cardiology if there’s anthracycline use and some underlying cardiac comorbidity.”
- Adjust dosage as appropriate: “You can adjust in the middle, be rather flexible and creative about these doses and dosing levels as you get going with your patient and see just what they can tolerate,” he said. “Sometimes you can ramp it up over the course, and sometimes you have to ramp it down to respond to toxicities.”
- Be aware that older patients are at much higher risk of suffering from toxicities due to the vincristine component of R-CHOP. These include neurotoxicities and constipation.
Graf highlighted the phase 3 Polar Bear study, which may offer more insight into therapy options in patients aged ≥ 75 years who are frail or those aged ≥ 80 years. The trial is scheduled to end in early 2027.
Graf discloses relationships with Janssen, TG Therapeutics, BeOne, AstraZeneca, Genentech, Incyte, Eli Lilly, and Pfizer.
In Early-Stage DLBCL, One Size No Longer Fits All
In Early-Stage DLBCL, One Size No Longer Fits All