Key Findings
- Purpose
To investigate whether vaso-occlusive episodes (VOE) and other clinical factors influence variability in urine albumin-to-creatinine ratio (UACR) in patients with sickle cell disease (SCD). - Population (Model)
Longitudinal cohort study of 378 adults with SCD from a single-center registry, with UACR measurements collected between 2010 and 2024 and ≥6 months follow-up. - Headline Result
The study found no significant association between VOE or proximity to VOE and UACR variability; instead, older age and higher mean arterial pressure were consistent predictors of increased UACR, with additional associations observed for genotype and RAAS inhibitor use at higher albuminuria thresholds. - Why It Matters
UACR is widely used as an early marker of kidney disease in SCD, but variability complicates interpretation. These findings suggest that routine clinical factors — particularly blood pressure and age — may be more relevant drivers of albuminuria than acute vaso-occlusive events.
- Evidence Gaps & Limitations
Single-center design limits generalizability. Observational analysis precludes causal inference, and the impact of kidney injury severity and longitudinal changes in UACR requires further study in larger, multi-center cohorts.
Source: Journal of Sickle Cell Disease- “Clinical Predictors for the Variability of Urine Albumin Concentration in Patients With Sickle Cell Disease”
Regulatory & Guideline Watch
The American Society of Hematology recommends red blood cell exchange in severe complications of sickle cell disease, including acute chest syndrome and neurologic events. Fat embolism syndrome is not explicitly addressed in current guidelines, reflecting limited evidence and reliance on case-based management approaches.