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Patients at very high risk for melanoma, including those with a family history or with inherited pathogenic variants of genes that increase the risk, likely benefit from routine whole-body screening for melanoma and education about UV protection.
Those are key findings from the first prospective cohort study to quantify the benefit of screening in melanoma-prone families, which was published online April 2 in Cancer Epidemiology, Biomarkers & Prevention.
“Whole-body screening for melanoma is currently routine for individuals at high risk for melanoma, which includes people from melanoma-prone families (at least two relatives who have had melanoma) and those with inherited pathogenic gene variants of the CDKN2A or CDK4 genes, which increase risk for melanoma,” lead author Michael R. Sargen, MD, said in an interview. “In our study, we investigated whether screening and educational interventions, including education about the appearance of melanoma and strategies for protecting skin from ultraviolet damage, contributed to early diagnosis of melanoma in individuals from melanoma-prone families.”
Of the 293 individuals who enrolled in the study between 1976 and 2014, 246 were diagnosed with melanoma before enrollment (the prestudy cohort) and 47 were diagnosed after enrollment (the prospective cohort). The researchers compared differences in melanoma thickness and tumor stage between participants in the prestudy and prospective cohorts, and compared tumor-thickness trends between participants in their study and cases in the general population using data from Surveillance, Epidemiology, and End Results (SEER) registries between 1973 and 2016. Because information on melanoma thickness was missing for 24% of melanoma cases in the NCI Familial Melanoma Study and 8.7% of melanoma cases found in the SEER registry, the researchers imputed the missing data.
After adjusting for gender and age, Dr. Sargen and his colleagues found that participants in the prospective cohort had significantly thinner melanomas, compared with those in the prestudy cohort (0.6 mm vs. 1.1 mm, respectively; P < .001). In addition, 83% of those in the prospective cohort were significantly more likely to be diagnosed at the early T1 stage, compared with 40% of those in the prestudy cohort (P < .001).
In their analysis, they also determined that after adjusting for gender and age, “all NCI family cases had systematically lower thickness than SEER cases during the study period.” The reductions in melanoma thickness and tumor stage, they concluded, “were not fully explained by calendar period effects of decreasing thickness in the general population and point to the potential benefit of skin cancer screening for patients with a family history of melanoma and those with pathogenic germline variants of melanoma-susceptibility genes.”
“Our data provide reassuring evidence that screening, alongside education about proper UV protection and the appearance of melanoma, is likely benefiting patients with a significantly elevated risk for melanoma,” Dr. Sargen said in the interview “Further studies are needed to determine whether individuals without a family history of melanoma may benefit from whole-body screening, and whether the benefits vary by ethnicity.”
He acknowledged certain limitations of the study, including the relatively small sample size of melanoma cases in the NCI Familial Melanoma Study and the imputation of missing melanoma-thickness data. “Additionally, since this was a prospective cohort study, we were not able to distinguish the independent effect of each intervention,” he said. “Randomized controlled studies are needed to understand the impact of each aspect of the intervention, such as whole-body screening, melanoma education, or strategies for skin protection.”
In an interview, Maryam M. Asgari, MD, professor of dermatology at Harvard University, Boston, called the analysis “well done,” but commented on the potential role of selection bias impacting the findings. “People who have a strong family history of melanoma and who are opting to engage in an NCI study and come in for full-body skin checks and go through that education process may have very different health-seeking behaviors than individuals in the general population that would be reported to SEER,” she said.
She also raised the question of whether the results were driven by the early detection through the NCI’s program of provider screening or through the educational component that enables earlier self-detection. “If you’re an individual involved in a study and that brings attention to your moles and you have a strong family history of melanoma to begin with, it is not surprising that you are going to have heightened awareness of any changing mole and therefore are more likely to have melanoma detected at an earlier stage,” Dr. Asgari said.
The study was supported by the Intramural Research Program of the Division of Cancer Epidemiology and Genetics at the National Cancer Institute. Dr. Sargen reported having no financial disclosures.
Dr. Asgari disclosed that she has received research support from the Melanoma Research Alliance.
Patients at very high risk for melanoma, including those with a family history or with inherited pathogenic variants of genes that increase the risk, likely benefit from routine whole-body screening for melanoma and education about UV protection.
Those are key findings from the first prospective cohort study to quantify the benefit of screening in melanoma-prone families, which was published online April 2 in Cancer Epidemiology, Biomarkers & Prevention.
“Whole-body screening for melanoma is currently routine for individuals at high risk for melanoma, which includes people from melanoma-prone families (at least two relatives who have had melanoma) and those with inherited pathogenic gene variants of the CDKN2A or CDK4 genes, which increase risk for melanoma,” lead author Michael R. Sargen, MD, said in an interview. “In our study, we investigated whether screening and educational interventions, including education about the appearance of melanoma and strategies for protecting skin from ultraviolet damage, contributed to early diagnosis of melanoma in individuals from melanoma-prone families.”
Of the 293 individuals who enrolled in the study between 1976 and 2014, 246 were diagnosed with melanoma before enrollment (the prestudy cohort) and 47 were diagnosed after enrollment (the prospective cohort). The researchers compared differences in melanoma thickness and tumor stage between participants in the prestudy and prospective cohorts, and compared tumor-thickness trends between participants in their study and cases in the general population using data from Surveillance, Epidemiology, and End Results (SEER) registries between 1973 and 2016. Because information on melanoma thickness was missing for 24% of melanoma cases in the NCI Familial Melanoma Study and 8.7% of melanoma cases found in the SEER registry, the researchers imputed the missing data.
After adjusting for gender and age, Dr. Sargen and his colleagues found that participants in the prospective cohort had significantly thinner melanomas, compared with those in the prestudy cohort (0.6 mm vs. 1.1 mm, respectively; P < .001). In addition, 83% of those in the prospective cohort were significantly more likely to be diagnosed at the early T1 stage, compared with 40% of those in the prestudy cohort (P < .001).
In their analysis, they also determined that after adjusting for gender and age, “all NCI family cases had systematically lower thickness than SEER cases during the study period.” The reductions in melanoma thickness and tumor stage, they concluded, “were not fully explained by calendar period effects of decreasing thickness in the general population and point to the potential benefit of skin cancer screening for patients with a family history of melanoma and those with pathogenic germline variants of melanoma-susceptibility genes.”
“Our data provide reassuring evidence that screening, alongside education about proper UV protection and the appearance of melanoma, is likely benefiting patients with a significantly elevated risk for melanoma,” Dr. Sargen said in the interview “Further studies are needed to determine whether individuals without a family history of melanoma may benefit from whole-body screening, and whether the benefits vary by ethnicity.”
He acknowledged certain limitations of the study, including the relatively small sample size of melanoma cases in the NCI Familial Melanoma Study and the imputation of missing melanoma-thickness data. “Additionally, since this was a prospective cohort study, we were not able to distinguish the independent effect of each intervention,” he said. “Randomized controlled studies are needed to understand the impact of each aspect of the intervention, such as whole-body screening, melanoma education, or strategies for skin protection.”
In an interview, Maryam M. Asgari, MD, professor of dermatology at Harvard University, Boston, called the analysis “well done,” but commented on the potential role of selection bias impacting the findings. “People who have a strong family history of melanoma and who are opting to engage in an NCI study and come in for full-body skin checks and go through that education process may have very different health-seeking behaviors than individuals in the general population that would be reported to SEER,” she said.
She also raised the question of whether the results were driven by the early detection through the NCI’s program of provider screening or through the educational component that enables earlier self-detection. “If you’re an individual involved in a study and that brings attention to your moles and you have a strong family history of melanoma to begin with, it is not surprising that you are going to have heightened awareness of any changing mole and therefore are more likely to have melanoma detected at an earlier stage,” Dr. Asgari said.
The study was supported by the Intramural Research Program of the Division of Cancer Epidemiology and Genetics at the National Cancer Institute. Dr. Sargen reported having no financial disclosures.
Dr. Asgari disclosed that she has received research support from the Melanoma Research Alliance.
Patients at very high risk for melanoma, including those with a family history or with inherited pathogenic variants of genes that increase the risk, likely benefit from routine whole-body screening for melanoma and education about UV protection.
Those are key findings from the first prospective cohort study to quantify the benefit of screening in melanoma-prone families, which was published online April 2 in Cancer Epidemiology, Biomarkers & Prevention.
“Whole-body screening for melanoma is currently routine for individuals at high risk for melanoma, which includes people from melanoma-prone families (at least two relatives who have had melanoma) and those with inherited pathogenic gene variants of the CDKN2A or CDK4 genes, which increase risk for melanoma,” lead author Michael R. Sargen, MD, said in an interview. “In our study, we investigated whether screening and educational interventions, including education about the appearance of melanoma and strategies for protecting skin from ultraviolet damage, contributed to early diagnosis of melanoma in individuals from melanoma-prone families.”
Of the 293 individuals who enrolled in the study between 1976 and 2014, 246 were diagnosed with melanoma before enrollment (the prestudy cohort) and 47 were diagnosed after enrollment (the prospective cohort). The researchers compared differences in melanoma thickness and tumor stage between participants in the prestudy and prospective cohorts, and compared tumor-thickness trends between participants in their study and cases in the general population using data from Surveillance, Epidemiology, and End Results (SEER) registries between 1973 and 2016. Because information on melanoma thickness was missing for 24% of melanoma cases in the NCI Familial Melanoma Study and 8.7% of melanoma cases found in the SEER registry, the researchers imputed the missing data.
After adjusting for gender and age, Dr. Sargen and his colleagues found that participants in the prospective cohort had significantly thinner melanomas, compared with those in the prestudy cohort (0.6 mm vs. 1.1 mm, respectively; P < .001). In addition, 83% of those in the prospective cohort were significantly more likely to be diagnosed at the early T1 stage, compared with 40% of those in the prestudy cohort (P < .001).
In their analysis, they also determined that after adjusting for gender and age, “all NCI family cases had systematically lower thickness than SEER cases during the study period.” The reductions in melanoma thickness and tumor stage, they concluded, “were not fully explained by calendar period effects of decreasing thickness in the general population and point to the potential benefit of skin cancer screening for patients with a family history of melanoma and those with pathogenic germline variants of melanoma-susceptibility genes.”
“Our data provide reassuring evidence that screening, alongside education about proper UV protection and the appearance of melanoma, is likely benefiting patients with a significantly elevated risk for melanoma,” Dr. Sargen said in the interview “Further studies are needed to determine whether individuals without a family history of melanoma may benefit from whole-body screening, and whether the benefits vary by ethnicity.”
He acknowledged certain limitations of the study, including the relatively small sample size of melanoma cases in the NCI Familial Melanoma Study and the imputation of missing melanoma-thickness data. “Additionally, since this was a prospective cohort study, we were not able to distinguish the independent effect of each intervention,” he said. “Randomized controlled studies are needed to understand the impact of each aspect of the intervention, such as whole-body screening, melanoma education, or strategies for skin protection.”
In an interview, Maryam M. Asgari, MD, professor of dermatology at Harvard University, Boston, called the analysis “well done,” but commented on the potential role of selection bias impacting the findings. “People who have a strong family history of melanoma and who are opting to engage in an NCI study and come in for full-body skin checks and go through that education process may have very different health-seeking behaviors than individuals in the general population that would be reported to SEER,” she said.
She also raised the question of whether the results were driven by the early detection through the NCI’s program of provider screening or through the educational component that enables earlier self-detection. “If you’re an individual involved in a study and that brings attention to your moles and you have a strong family history of melanoma to begin with, it is not surprising that you are going to have heightened awareness of any changing mole and therefore are more likely to have melanoma detected at an earlier stage,” Dr. Asgari said.
The study was supported by the Intramural Research Program of the Division of Cancer Epidemiology and Genetics at the National Cancer Institute. Dr. Sargen reported having no financial disclosures.
Dr. Asgari disclosed that she has received research support from the Melanoma Research Alliance.
FROM CANCER EPIDEMIOLOGY, BIOMARKERS, AND PREVENTION