G6PD Deficiency Elevates Acute Kidney Injury Risk in Pediatric Severe Malaria

Overview

In a cohort of Ugandan children with severe malaria, G6PD African allele (A−) deficiency was associated with a 2.56-fold increased odds of acute kidney injury (AKI), independent of hemolytic markers. This highlights G6PD deficiency as an important risk factor for AKI beyond hemolysis in pediatric severe malaria.

Background

Acute kidney injury is a frequent and serious complication of severe malaria in African children, predicting mortality and long-term morbidity. G6PD deficiency, an X-linked enzymopathy prevalent in sub-Saharan Africa, predisposes red blood cells to oxidative stress-induced hemolysis. Hemolysis releases nephrotoxic hemoproteins that can contribute to AKI. While G6PD deficiency has been linked to hemolysis and AKI in infections, its direct association with AKI in pediatric severe malaria had not been previously established.

Data Highlights

Key Findings

• G6PD A− allele deficiency was present in 16.7% of hemizygous males and 2.4% of females in the cohort.
• G6PD deficiency was independently associated with a 2.56-fold increased odds of AKI after adjusting for age, sex, site, nutritional status, and hemolysis markers.
• The association between G6PD deficiency and AKI was independent of hemolytic events, suggesting additional mechanisms beyond hemolysis.
• Markers of hemolysis measured included haptoglobin, hemopexin, hemin, hemoglobin, and sCD163, but did not fully explain the increased AKI risk in G6PD-deficient children.
• The study utilized KDIGO criteria for AKI definition and genotyped G6PD variants using a genome-wide screening array.

Clinical Implications

Clinicians should consider G6PD deficiency as a significant risk factor for AKI in children with severe malaria, even in the absence of overt hemolysis. Screening for G6PD status may help identify patients at higher risk for kidney injury and guide monitoring and supportive care strategies. Awareness of this association is important for optimizing management and potentially improving outcomes in pediatric severe malaria.

Conclusion

G6PD deficiency markedly increases the risk of acute kidney injury in pediatric severe malaria independent of hemolysis, underscoring the need to incorporate G6PD status into risk assessment and management protocols for affected children.

References

1. Author/Source/2024 -- Association of Glucose-6-Phosphate Dehydrogenase Deficiency with Elevated Acute Kidney Injury Risk in Pediatric Severe Malaria