About Classic Galactosemia
Classic galactosemia is caused by severe deficiency of galactose-1-phosphate uridyltransferase (GALT), which is essential for metabolizing galactose found in lactose (milk sugar). Newborns present with jaundice, liver failure, E. coli sepsis, and cataracts within days of milk feeding. Despite dietary galactose restriction, most patients develop long-term complications including intellectual disability, speech problems, and in females, primary ovarian insufficiency.
Common Clinical Features
Clinical Trial Eligibility Tips
What to know before applying to Classic Galactosemia trials.
Erythrocyte GALT enzyme activity is the gold standard diagnostic test — Beutler test results should be documented
Galactose-1-phosphate level in red blood cells is the primary efficacy biomarker in dietary and drug trials
Long-term complication trials (cognitive, fertility) often enroll adults with confirmed classic galactosemia on lifelong galactose restriction
New substrate reduction and small molecule therapies are in early trials — no prior investigational therapy is typically an inclusion criterion
Patient Resources
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