Cancer burden and risk factors among women with HIV: a multi-regional study from the D:A:D and RESPOND cohort collaborations

Background: Data on cancer incidence and associated risk factors among women with HIV are limited. We investigated cancer burden among women with HIV. Methods: We included all women ≥18 years from the two large multicentre observational cohort collaborations (D:A:D and RESPOND). The primary outcomes were incidence of all cancers, HPV-related and common individual cancers including breast cancer, lung cancer, and non-Hodgkin lymphoma (NHL) from 2006 to 2021. Baseline was defined as the latest date of entry into local cohort enrolment and 1st January 2006 for D:A:D and 1st January 2012 for RESPOND. Participants were followed from baseline until the date of first cancer, final follow-up or administrative censoring-whichever occurred first. We assessed risk factors using multivariable Poisson regression by applying robust standard errors and determined a population attributable fraction (PAF) for key risk factors for cancers. Findings: Among 17,512 women included, median age at baseline was 39.5 years (interquartile range, IQR 32.5-46.0). Over 141,404 person-years (PYS) and a median 9.2 (5.5-10.1) years of follow-up, 832 women were diagnosed with any cancer; incidence rate 5.9 (95% CI 5.5-6.4)/1000 PYS, 163 HPV-related cancers (1.1 [1.0-1.3]/1000 PYS), 150 breast cancers (1.1 [0.9-1.2]/1000 PYS), 94 lung cancers (0.7 [0.5-0.8]/1000 PYS) and 72 NHL (0.5 [0.4-0.6]/1000 PYS). Older age (≥45 vs.