NR5A1-Related Sex Development Disorder Manual Research Audit

This manual research artifact was prepared during PR rescue for NR5A1_Related_Sex_Development_Disorder.yaml. It is not a provider-generated Falcon/OpenAI deep-research run; it records the source-backed literature audit used to address review coverage gaps without fabricating a provider artifact.

Sources Checked

• PMID:19246354, Lourenco et al. 2009, establishes NR5A1 mutations across ovarian insufficiency, 46,XY DSD, and adrenal failure, including functional transactivation impairment.
• PMID:20887963, Bashamboo et al. 2010, links NR5A1 variants to severe spermatogenic failure in otherwise unexplained male infertility.
• PMID:28033660, Domenice et al. 2016, reviews the broad 46,XY and 46,XX NR5A1 phenotypic spectrum, including POI with hypoestrogenism and elevated gonadotropins.
• PMID:31513305, Fabbri-Scallet et al. 2020, summarizes NR5A1 as a transcription factor regulating adrenal, gonadal, reproductive, and endocrine target genes.
• PMID:20301589, GeneReviews for nonsyndromic 46,XX testicular DSD, was identified by broad GeneReviews/SF-1 search and covers heterozygous NR5A1 pathogenic variants as one cause of SRY-negative 46,XX testicular or ovotesticular DSD.

Coverage Assessment

The curated entry captures the central mechanism as reduced NR5A1/SF-1 transactivation disrupting adrenogonadal development and steroidogenesis. The model separates downstream branches for 46,XY testicular dysgenesis and undervirilization, 46,XX ovarian dysgenesis or primary ovarian insufficiency, and adrenal insufficiency.

The phenotype section covers gonadal dysgenesis, ambiguous genitalia, azoospermia, oligozoospermia, premature ovarian insufficiency, primary amenorrhea, and adrenal insufficiency. The prior combined oligo/azoospermia phenotype was split into term-specific HP entries because HP:0000027 covers azoospermia only.

The treatment section covers estrogen replacement, androgen replacement, adrenal hormone replacement, and genetic counseling. The adrenal entry is only partially supported by the cited NR5A1 clinical literature because the source documents adrenal failure as part of the disease spectrum, while hormone replacement is standard care for adrenal insufficiency rather than specifically trialed in NR5A1 cohorts.

The biochemical section captures decreased serum estradiol as a readout of the 46,XX primary ovarian insufficiency arm, supported by the Domenice et al. description of hypoestrogenism with elevated gonadotropins.

Remaining Notes

PubMed search for NR5A1 GeneReviews[TI] returned no article with NR5A1 in the title. The tagged GeneReviews chapter, PMID:20301589, is therefore not a complete NR5A1 gene-axis review; it is relevant to the 46,XX testicular DSD arm and to NR5A1 inheritance counseling.