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Randomized Controlled Trial
. 2018 Jan 17;217(3):405-412.
doi: 10.1093/infdis/jix350.

Serum Albumin as a Prognostic Marker for Serious Non-AIDS Endpoints in the Strategic Timing of Antiretroviral Treatment (START) Study

Andreas Ronit  1 , Shweta Sharma  2 , Jason V Baker  3 , Rosie Mngqibisa  4 , Tristan Delory  5 , Luis Caldeira  6 , Nicaise Ndembi  7 , Jens D Lundgren  8 , Andrew N Phillips  9 ; International Network for Strategic Initiatives in Global HIV Trials (INSIGHT) Strategic Timing of Antiretroviral Treatment (START) Study Group
Affiliations
Randomized Controlled Trial

Serum Albumin as a Prognostic Marker for Serious Non-AIDS Endpoints in the Strategic Timing of Antiretroviral Treatment (START) Study

Andreas Ronit et al. J Infect Dis. .

Abstract

Background: Serum albumin may be used to stratify human immunodeficiency virus (HIV)-infected persons with high CD4 count according to their risk of serious non-AIDS endpoints.

Methods: Cox proportional hazards models were used to analyze the risk of serious non-AIDS events in the Strategic Timing of Antiretroviral Treatment (START) study (NCT00867048) with serum albumin as a fixed and time-updated predictor. Models with exclusion of events during initial follow-up years were built to assess the ability of serum albumin to predict beyond shorter periods of time. Secondarily, we considered hospitalizations and AIDS events.

Results: Among 4576 participants, 71 developed a serious non-AIDS event, 788 were hospitalized, and 63 experienced an AIDS event. After adjusting for a range of variables associated with hypoalbuminemia, higher baseline serum albumin (per 1 g/dL) was associated with a decreased risk of serious non-AIDS events (hazard ratio, 0.37 [95% confidence interval, .20-.71]; P = .002). Similar results were obtained in a time-updated model, after controlling for interleukin 6, and after excluding initial follow-up years. Serum albumin was independently associated with hospitalization but not with risk of AIDS.

Conclusions: A low serum albumin level is a predictor for short- and long-term serious non-AIDS events, and may be a useful marker of risk of noncommunicable diseases, particularly in resource-limited settings.

Keywords: HIV; albumin; biomarker; non-AIDS comorbidity; non-communicable disease.

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Figures

Figure 1.
Figure 1.
Kaplan–Meier survival curves for serious non-AIDS events according to baseline serum albumin levels. Kaplan–Meier survival curves with risk table for serious non-AIDS events (n = 71) stratified by serum albumin tertiles at baseline. Log-rank test of equality of strata (P = .001).
Figure 2.
Figure 2.
Kaplan–Meier survival curves for hospitalization according to baseline serum albumin levels. Kaplan–Meier survival curves with risk table for hospitalization events (n = 788) stratified by serum albumin tertiles at baseline. Log-rank test of equality of strata (P < .0001).
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