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Transplant Recipients and Anal Neoplasia Study: Design, Methods, and Participant Characteristics of a Prevalence Study.


ABSTRACT: Kidney recipients have anal cancer rates 3 times higher than the general population in Australia and New Zealand. High-risk human papillomavirus (HPV) genotypes are implicated in the majority of anal cancers. Establishing the epidemiology of anal HPV infection and precursors of anal cancer in transplant recipient populations is 1 consideration in any potential screening program. The Transplant and Anal Neoplasia Study is a cross-sectional study of the prevalence of anal cytological abnormalities and HPV deoxyribonucleic acid in kidney transplant recipients, as well as evaluating the acceptability of an anal cancer screening intervention. The study aims to recruit 100 kidney transplant recipients, older than 18 years, in Australia. Transplant recipients attending for a protocol biopsy at 3 and 12 months and annually posttransplant are approached to participate. Participants undergo an anal swab, which is then analyzed using liquid-based cytological examination and tested for the detection of 37 anogenital HPV deoxyribonucleic acid genotypes. Participants also complete a demographic and behavioral questionnaire that covers sexual behavior, history of anal symptoms, and possible anal cancer risk factors. Associations will be tested using multiple regression analysis. Recruitment for the study began in 2015 and is ongoing. To date, 96 (77%) of 125 kidney transplant recipients approached have consented to the study. The mean age is 48 (median, 47 y; range, 20-76 y), 59% are male, and Northwest European (58%) represented the largest ethnic group. No participants self-identified as Aboriginal or Torres Strait Islander. High consent rates and positive qualitative results suggest that a larger screening program may be well received by kidney transplant recipients, with increased resources and some modification to the timing of approach. Further results of the study will inform the possible implementation of a larger screening trial for prevention of anal cancers in kidney and other solid organ transplant recipients.

SUBMITTER: Rosales BM 

PROVIDER: S-EPMC6445652 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature

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Transplant Recipients and Anal Neoplasia Study: Design, Methods, and Participant Characteristics of a Prevalence Study.

Rosales Brenda Maria BM   Langton-Lockton Julian J   Cornall Alyssa M AM   Roberts Jennifer M JM   Hillman Richard J RJ   Webster Angela Claire AC  

Transplantation direct 20190304 4


Kidney recipients have anal cancer rates 3 times higher than the general population in Australia and New Zealand. High-risk human papillomavirus (HPV) genotypes are implicated in the majority of anal cancers. Establishing the epidemiology of anal HPV infection and precursors of anal cancer in transplant recipient populations is 1 consideration in any potential screening program. The Transplant and Anal Neoplasia Study is a cross-sectional study of the prevalence of anal cytological abnormalities  ...[more]

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