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Diagnostic challenges of kidney diseases in HIV-infected patients
Robin Chazot1, Elisabeth Botelho-Nevers2,3, Anne Frésard2,3
1a Department of Nephrology, Dialysis, Transplantation and Hypertension , University Hospital of Saint-Étienne , Saint-Étienne , France.
Insights
Diagnosing chronic kidney disease (CKD) in people with HIV is challenging. New kidney biomarkers show promise for early detection and predicting outcomes in HIV-positive individuals.
Area of Science:
- Nephrology
- Infectious Diseases
- Biomarker Discovery
Background:
- Chronic kidney disease (CKD) is common in people living with HIV (PLWH), increasing cardiovascular risks and mortality.
- Early CKD diagnosis in PLWH is difficult using current standard methods.
Purpose of the Study:
- To review diagnostic tools for CKD in PLWH.
- To explore novel kidney biomarkers for CKD detection and prognosis in PLWH.
Main Methods:
- Literature search on PubMed for reviews and clinical trials on kidney biomarkers in PLWH.
- Analysis of current CKD diagnostic parameters: estimated Glomerular Filtration Rate (eGFR) and urine protein/creatinine ratio (uPCR).
Main Results:
- Standard eGFR estimates (like CKD-EPI) have limitations in accuracy for PLWH.
- Low-grade proteinuria is a significant predictor of kidney disease progression in PLWH.
- Novel biomarkers such as NAG, KIM-1, and Alpha-1-microglobulin may predict progression, mortality, and antiretroviral-related tubulopathy.
Conclusions:
- Current CKD diagnostic markers (eGFR, uPCR) have limitations in PLWH.
- Emerging kidney biomarkers offer potential for improved CKD diagnosis, risk stratification, and management in PLWH.
- Further research is required to validate the clinical utility of these novel biomarkers.
Introduction:
Chronic kidney disease (CKD) is a prevalent comorbidity in persons living with HIV infection (PLWH) associated with an increase in cardiovascular morbidity and all-cause mortality. Furthermore, early diagnosis of CKD is difficult in PLWH. Areas covered: We reviewed the main diagnostic tools for CKD in PLWH, and discussed their strengths and limits. We performed a literature search on PubMed to identify reviews and clinical trials dealing with attractive kidney biomarkers of CKD in PLWH, with the following key words: 'HIV AND kidney', 'HIV AND Kidney biomarkers', 'CKD AND Kidney biomarkers'. Expert commentary: Currently, CKD diagnosis is based on the estimation of Glomerular Filtration Rate (GFR), and measurement of proteinuria by urine protein/creatinine ratio (uPCR). These parameters are independent and complementary predictors of outcomes. GFR estimates are lacking in accuracy in PLWH. The best GFR estimate is CKD-EPI study equation. Moreover, low-grade proteinuria is associated with an increased risk of kidney disease progression in PLWH, and guidelines derived from the general population may lack sensitivity. Different biomarkers of kidney diseases like N-acetyl beta glucosaminidase (NAG), Kidney Injury Molecule-1 (KIM-1), and Alpha-1-microglobulin may predict kidney disease progression and mortality in PLWH. Others may help clinicians detect antiretroviral-induced tubulopathy, or predict cardiovascular events. More studies are needed to validate the routine use of these types of biomarkers.
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