This isoform of 17β-HSD is expressed predominantly in the testis and catalyzes the conversion of androstenedione to testosterone. It preferentially uses NADP as cofactor. Deficiency can result in impaired virilization of genetically male infants, formerly termed male pseudohermaphroditism.[4][3]
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Can S, Zhu YS, Cai LQ, Ling Q, Katz MD, Akgun S, Shackleton CH, Imperato-McGinley J (February 1998). "The identification of 5 alpha-reductase-2 and 17 beta-hydroxysteroid dehydrogenase-3 gene defects in male pseudohermaphrodites from a Turkish kindred". The Journal of Clinical Endocrinology and Metabolism. 83 (2): 560–9. doi:10.1210/jc.83.2.560. PMID9467575.
Moghrabi N, Hughes IA, Dunaif A, Andersson S (August 1998). "Deleterious missense mutations and silent polymorphism in the human 17beta-hydroxysteroid dehydrogenase 3 gene (HSD17B3)". The Journal of Clinical Endocrinology and Metabolism. 83 (8): 2855–60. doi:10.1210/jc.83.8.2855. PMID9709959.
Bilbao JR, Loridan L, Audí L, Gonzalo E, Castaño L (September 1998). "A novel missense (R80W) mutation in 17-beta-hydroxysteroid dehydrogenase type 3 gene associated with male pseudohermaphroditism". European Journal of Endocrinology. 139 (3): 330–3. doi:10.1530/eje.0.1390330. PMID9758445.
Lindqvist A, Hughes IA, Andersson S (February 2001). "Substitution mutation C268Y causes 17 beta-hydroxysteroid dehydrogenase 3 deficiency". The Journal of Clinical Endocrinology and Metabolism. 86 (2): 921–3. doi:10.1210/jc.86.2.921. PMID11158067.
Lee YS, Kirk JM, Stanhope RG, Johnston DI, Harland S, Auchus RJ, Andersson S, Hughes IA (July 2007). "Phenotypic variability in 17beta-hydroxysteroid dehydrogenase-3 deficiency and diagnostic pitfalls". Clinical Endocrinology. 67 (1): 20–8. doi:10.1111/j.1365-2265.2007.02829.x. PMID17466011.