Case of interstitial deletion of the short arm of chromosome 9 associated with disorders of sex development

Abstract

Deletions of the short arm of chromosome 9 are a clinically and genetically heterogeneous group. Most of the cases described are terminal deletions or unbalanced translocations with different break points on the short arm of chromosome 9. Interstitial deletions of the short arm of chromosome 9 are an extremely rare chromosome pathology. We report a patient with developmental and psychomotor delay, cerebellar hypoplasia and hypospadias, who was diagnosed with interstitial 9p24.3-p23 deletion affecting the DMRT1 gene during chromosome microarray analysis (СMA).