Organic Acid DisordersNewborn ScreeningRUSP

Isovaleric Acidemia

IVA

Isovaleric acidemia impairs leucine catabolism, producing isovaleric acid that can cause severe acidosis and a characteristic “sweaty feet” odor during crises. Glycine and carnitine are mainstays of chronic therapy alongside protein restriction. Screening identifies asymptomatic newborns before their first metabolic emergency.

Prevalence
1 in 250,000
Inheritance
Autosomal recessive
Screened at Birth
Yes
On RUSP
Yes (Recommended Uniform Screening Panel)

About This Data

This disorder is part of the Cureledger rare disease data corpus. We are building privacy-preserving natural history datasets and advocacy tools for rare disease communities. Data is maintained by clinical advisors and the patient community.