Frequency and distribution of primary site among gender minority cancer patients: An analysis of U.S. national surveillance data. (June 2018)

• Record Type: Journal Article
• Authors: Nash, Rebecca; Ward, Kevin C.; Jemal, Ahmedin; Sandberg, David E.; Tangpricha, Vin; Goodman, Michael
• Is Part Of: Cancer epidemiology. Volume 54(2018:Jun.)
• Page Start: 1
• Page End: 6
• Publication Date: 2018-06
• Subjects: Cancer -- Transgender persons -- Disorders of sex development -- Epidemiology; Cancer -- Epidemiology -- Periodicals; Cancer -- Prevention -- Periodicals; Cancer -- Diagnosis -- Periodicals; Carcinogenesis -- Periodicals; 616.994005
• DOI: 10.1016/j.canep.2018.02.008
• Languages: English
• ISSNs: 1877-7821

Abstract

Highlights: Cancer registrars can indicate if a patient is a gender minority. To-date, nationwide data on cancer in gender minorities has not been examined. Proportion of viral-infection induced cancers is greater in transgender patients. Children with DSD have greater than expected numbers of testicular cancer. Abstract: Background: Transgender people and persons with disorders of sex development (DSD) are two separate categories of gender minorities, each characterized by unique cancer risk factors. Although cancer registry data typically include only two categories of sex, registrars have the option of indicating that a patient is transgender or has a DSD. Methods: Data for primary cancer cases in 46 states and the District of Columbia were obtained from the North American Association of Central Cancer Registries (NAACCR) database for the period 1995–2013. The distributions of primary sites and categories of cancers with shared risk factors were examined separately for transgender and DSD patients and compared to the corresponding distributions in male and female cancer patients. Proportional incidence ratios were calculated by dividing the number of observed cases by the number of expected cases. Expected cases were calculated based on the age- and year of diagnosis-specific proportions of cases in each cancer category observed among male and female patients. Results: Transgender patients have significantly elevated proportional incidence ratios (95% confidence intervals) for viral infection induced cancers compared to either males (2.3; 2.0–2.7) or females (3.3; 2.8–3.7). Adult DSD cancer patients have a similar distribution of primary sites compared to male or female patients but DSD children with cancer have ten times more cases of testicular malignancies than expected (95% confidence interval: 4.7–20). Conclusion: The proportions of certain primary sites and categories of malignancies among transgender and DSD cancer patients are different from the proportions observed for male or female patients.