Rare Disease Library

Browse Orphanet-curated rare diseases with HPO phenotype annotations, synonyms, and linked support programs. Search by name, abbreviation, or synonym.

Try: "IgA nephropathy", "C3G", "Berger's disease", "PKU", "Duchenne"

3 matching diseasesClear search ×

Phosphoribosylpyrophosphate synthetase superactivity

PRPP synthetase superactivity · PRPS1 superactivity

ORPHA:3222

Mild phosphoribosylpyrophosphate synthetase superactivity

Mild PRPP synthetase superactivity · Mild PRPS1 superactivity

ORPHA:411536

Severe phosphoribosylpyrophosphate synthetase superactivity

Severe PRPP synthetase superactivity · Severe PRPS1 superactivity

ORPHA:411543