The 9p- deletion syndrome A patient with a 45,XX,-9,-15, + t(9/15) constitution due to maternal 3:l meiotic disjunction

Abstract
Deletion of the short arm of chromosome 9, derived from a 3:1 meiotic segregation in the mother, carrier of a balanced 9/15 translocation, was found in a 3‐year‐old female. Severe psychomotor retardation with delayed speech, brachicephaly, flat occiput, hypertelorism and long upper lip were the main signs in the girl.

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