Mutations in MAP3K1 tilt the balance from SOX9/FGF9 to WNT/β-catenin signaling

Abstract excerpt

In-frame missense and splicing mutations (resulting in a 2 amino acid insertion or a 34 amino acid deletion) dispersed through the MAP3K1 gene tilt the balance from the male to female sex-determining pathway, resulting in 46,XY disorder of sex development. These MAP3K1 mutations mediate this balance by enhancing WNT/β-catenin/FOXL2 expression and β-catenin activity and by reducing SOX9/FGF9/FGFR2/SRY expression....

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