Clinical outcomes post transition to adult services in young adults with perinatally acquired HIV infection: mortality, retention in care, and viral suppression.

Objective: Adolescence is the only age group globally where HIV-associated mortality is rising, with poorer outcomes at all stages of the care cascade compared with adults. We examined post transition outcomes for young adults living with perinatal HIV. Design: Retrospective cohort analysis. Setting: A tertiary Youth Friendly Service London, UK. Participants: A total of 180 young adults living with perinatal HIV registered between 1 January 2006 and 31 December 2017 contributed 921 person-years of follow-up post transition to adult services. Intervention: Youth Friendly Service with multidisciplinary care and walk-in access. Main outcome measures: Mortality, morbidity, retention in care, antiretroviral therapy (ART) uptake and HIV-viral load suppression. Crude incidence rates are reported per 1000 person-years. Results: Of 180 youth registered, four (2.2%) died, 14 (7.8%) transferred care and four (2.2%) were lost to follow-up. For the 158 retained in care, the median age was 22.9 years [interquartile ranges (IQR) 20.3-25.4], 56% were female, 85% Black African, with a median length of follow-up in adult care of 5.5 years (IQR 2.9-7.3). 157 (99.4%) ever received an ART prescription, 127/157 (81%) with a latest HIV-viral load less than 200 copies RNA/ml, median CD4(+)cell count of 626 cells/mu l (IQR 441-820). The all-cause mortality was 4.3/1000 person-years [95% confidence interval (CI) 1.2-11.1], 10 fold the aged-matched UK HIV-negative population [0.43/1000 person-years (95% CI 0.41-0.44)]. Post transition, 17/180 (9.4%) developed a new AIDS diagnosis; crude incidence rates 18.5/1000 person-years (95% CI 10.8-29.6). Conclusion: While this youth-friendly multidisciplinary service achieved high engagement and coverage of suppressive ART, mortality remains markedly increased compared with the general UK population.