Table 3.

Other Allelic Syndromic Disorders

GeneConditionMolecular PathogenesisClinical Characteristics
SOX3 Panhypopituitarism, X-linked (OMIM 312000)Duplication or expansion of polyalanine tractPanhypopituitarism has been described in a few 46,XY persons w/SOX3 duplications (their heterozygous 46,XX mothers were not affected).
SOX9 Campomelic dysplasia (CD) 1Heterozygous loss-of-function variant
  • Skeletal dysplasia; distinctive facies; Pierre Robin sequence w/cleft palate; shortening & bowing of long bones; clubfeet
  • Many affected infants die in neonatal period due to laryngotracheomalacia & respiratory compromise
  • Ambiguous genitalia or typical female external genitalia are seen in most XY persons. DSD is not a feature of 46,XX persons w/CD.
WT1 Denys-Drash syndrome (See WT1 Disorder.) 2Heterozygous variants in exons 8 or 9 encoding ZF2 & ZF3 domainsIn Denys-Drash & Frasier syndromes, 46,XY children typically present w/ambiguous or female external genitalia, gonadal dysgenesis, nephrotic syndrome, Wilms tumor &/or gonadoblastoma.
Frasier syndrome (See WT1 Disorder.) 2Heterozygous splice site variants
Meacham syndrome (See WT1 Disorder.) 2Mutational spectrum overlap w/Denys-Drash syndromeMeacham syndrome is assoc w/congenital diaphragmatic hernia, congenital heart disease, & retention of & anomalies in müllerian structures.
WAGR syndrome (See PAX6-Related Aniridia.) 2Contiguous gene syndrome due to haploinsufficiency of WT1, PAX6, & other genesWAGR syndrome incls Wilms tumors, aniridia, genitourinary anomalies, & DD.
Isolated nephrotic syndrome (See WT1 Disorder.) 2Mutational spectrum overlap w/Denys-Drash syndrome

DD = developmental delay

1.

See also OMIM 114290.

2.

From: Nonsyndromic 46,XX Testicular Disorders/Differences of Sex Development

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