1720-lyase
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1720-lyase deficiency — 17,20 ly·ase de·fi·cien·cy (liґās) a disorder of steroidogenesis caused by mutation in the CYP17A1 gene (locus: 10q24.3), which encodes steroid 17α monooxygenase, resulting in deficiency of 17α hydroxyprogesterone aldolase, an… … Medical dictionary