ATP6V1B1-Associated Inherited Distal Renal Tubular Acidosis in Children: Insights from a Literature Review

Area of Science:

• Pediatric Nephrology
• Genetics
• Acid-Base Physiology

Background:

• Distal renal tubular acidosis (dRTA) is a rare inherited disorder affecting renal acid-base regulation.
• Autosomal recessive dRTA, particularly mutations in ATP6V1B1, is linked to early-onset disease and sensorineural hearing loss.
• Delayed diagnosis can lead to severe complications including growth failure, bone disease, nephrocalcinosis, and chronic kidney disease.

Purpose of the Study:

• To provide a comprehensive review of pediatric dRTA literature.
• To focus on ATP6V1B1-associated dRTA in children, covering pathophysiology, presentation, outcomes, genetics, and management.
• To highlight evolving genotype-phenotype correlations and the significance of early diagnosis.

Main Methods:

• Systematic review of pediatric literature on dRTA.
• Analysis of pathophysiology, clinical presentation, and audiological/renal outcomes.
• Examination of genetic architecture and genotype-phenotype correlations for ATP6V1B1 mutations.

Main Results:

• ATP6V1B1 mutations are a significant cause of autosomal recessive dRTA in children.
• Early-onset dRTA presents with potential for sensorineural hearing loss and other severe complications.
• Genotype-phenotype correlations are becoming clearer, aiding in understanding disease mechanisms.

Conclusions:

• Early diagnosis and management of ATP6V1B1-associated dRTA are crucial to prevent long-term sequelae.
• Long-term multidisciplinary follow-up is essential for affected children.
• Understanding autosomal recessive inheritance patterns is key for genetic counseling and management.