• Clin. Infect. Dis. · May 2017

    Antiretrovirals, Fractures, and Osteonecrosis in a Large International HIV Cohort.

    • Álvaro H Borges, Jennifer Hoy, Eric Florence, Dalibor Sedlacek, Hans-Jürgen Stellbrink, Vilma Uzdaviniene, Janez Tomazic, Panagiotis Gargalianos-Kakolyris, Patrick Schmid, Chloe Orkin, Court Pedersen, Clifford Leen, Christian Pradier, Fiona Mulcahy, Anna Lisa Ridolfo, Therese Staub, Fernando Maltez, Rainer Weber, Leo Flamholc, Galina Kyselyova, Jens D Lundgren, Amanda Mocroft, and for EuroSIDA.
    • Centre of Excellence for Health, Immunity and Infections (CHIP), Department of Infectious Diseases, Rigshospitalet, and.
    • Clin. Infect. Dis. 2017 May 15; 64 (10): 1413-1421.

    BackgroundAntiretrovirals (ARVs) affect bone density and turnover, but their effect on risk of fractures and osteonecrosis of the femoral head is less understood. We investigated if exposure to ARVs increases the risk of both bone outcomes.MethodsEuroSIDA participants were followed to assess fractures and osteonecrosis. Poisson regression identified clinical, laboratory and demographic predictors of either bone outcome. Ever, current, and cumulative exposures to ARVs were assessed.ResultsDuring 86118 PYFU among 11820 included persons (median age 41y, 75% male, median baseline CD4 440/mm3, 70.4% virologically suppressed), there were 619 fractures (incidence/1000 PYFU 7.2; 95% CI 6.6-7.7) and 89 osteonecrosis (1.0; 0.8-1.3). Older age, white race, lower BMI, IV drug use, lower baseline CD4, HCV coinfection, prior osteonecrosis, prior fracture, cardiovascular disease, and recent non-AIDS cancer (last 12 months) were associated with fractures. After adjustment, persons who had ever used tenofovir disoproxil fumarate (TDF) (1.40; 1.15-1.70) or who were currently on TDF (1.25; 1.05-1.49) had higher incidence of fractures. There was no association between cumulative exposure to TDF and fractures (1.08/5 y exposure; 0.94-1.25). No other ARV was associated with fractures (all P > .1). Risk of osteonecrosis was associated with white race, lower nadir CD4, prior osteonecrosis, prior fracture, and prior AIDS. After mutual adjustment, no ARV was associated with osteonecrosis.ConclusionsIn human immunodeficiency virus (HIV) infection, host factors, HIV-specific variables, and comorbidities contribute to risk of fractures and osteonecrosis. Exposure to TDF, but not other ARVs, was an independent risk factor for fractures.© The Author 2017. Published by Oxford University Press for the Infectious Diseases Society of America. All rights reserved. For permissions, e-mail: journals.permissions@oup.com

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