Conference Coverage

CKD triples risk of bad outcomes in HIV


 

REPORTING FROM CROI

– A lot of people do well with HIV thanks to potent antiretrovirals, but there’s still at least one group that needs extra attention: HIV patients with chronic kidney disease (CKD), according to Lene Ryom, MD, PhD, an HIV researcher at the University of Copenhagen.

She was the lead investigator on a review of 2,467 HIV patients with CKD – which is becoming more common in HIV as patients live longer – and 33,427 HIV patients without CKD.

kidneys decade3d/Thinkstock
At a median of 2.7 years after CKD diagnosis, 595 (24.1%) developed a serious clinical event, defined in the study as end-stage renal disease, end-stage liver disease, cardiovascular disease, malignancy, other AIDS events, or death. Almost 8% of patients developed a serious clinical event within a year of CKD diagnosis. Smoking, diabetes, dyslipidemia, body mass index below 18 kg/m2, and poor HIV control were identified as modifiable risk factors.

The incidence of serious clinical events following CKD diagnosis was 68.9 events per 1,000 patient-years. Among the HIV patients without CKD, the incidence was 23 events per 1,000 patient-years.

“In an era when many HIV patients require much less management due to effective antiretroviral treatment, those living with CKD have a much higher burden of serious clinical events and require much closer monitoring. Modifiable risk factors ... play a central role in CKD morbidity and mortality, highlighting the need for increased awareness, effective treatment, and preventative measures. In particular, smoking seems to be quite important for all” serious adverse outcomes, “so that’s a good place to start,” Dr. Ryom said at the Conference on Retroviruses & Opportunistic Infections.

Most of the 2,467 HIV patients with CKD were white men who have sex with men. At baseline, the median age was 60 years, and median CD4 cell count was above 500. One in three were smokers, 22.4% were HCV positive, and most had viral loads below 400 copies/mL. More than half of the patients were estimated to have died within 5 years of CKD diagnosis.

CKD was defined as two estimated glomerular filtration rates at or below 60 mL/min per 1.73 m2 taken at least 3 months apart, or a 25% decrease in eGFR when patients entered the study at that level.

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