46,XX sex reversal with partial duplication of chromosome arm 22q

Am J Med Genet A. 2004 Jun 1;127A(2):149-51. doi: 10.1002/ajmg.a.20630.


We present a case of 46,XX sex reversal in the absence of SRY but with partial duplication of chromosome 22q. The subject had multiple congenital anomalies but nearly complete masculinization of the external genitalia. Our case along with a previous case supports the existence of a gene on chromosome 22q that can trigger testis determination in the absence of SRY. We proposed that overexpression of the SOX10 gene at 22q13 might be the cause of sex reversal. We investigated 13 additional subjects with SRY-negative 46,XX sex reversal for microduplication of chromosome arm 22q in the region of SOX10 gene, but could not find evidence for it.

Publication types

  • Case Reports

MeSH terms

  • Aneuploidy
  • Chromosome Disorders / genetics*
  • Chromosomes, Human, Pair 22 / genetics*
  • Cytogenetic Analysis
  • DNA-Binding Proteins / genetics
  • DNA-Binding Proteins / metabolism*
  • Disorders of Sex Development*
  • Female
  • High Mobility Group Proteins / genetics
  • High Mobility Group Proteins / metabolism*
  • Humans
  • Male
  • Microsatellite Repeats / genetics
  • SOXE Transcription Factors
  • Sex Determination Processes*
  • Transcription Factors


  • DNA-Binding Proteins
  • High Mobility Group Proteins
  • SOX10 protein, human
  • SOXE Transcription Factors
  • Transcription Factors