46,XY/46,XY,21q- mosaicism in an infant with neutropenia and properdin deficiency.

Abstract
An infant with neutropenia, properdin deficiency, and a 46,XY/46,XY,21q- mosaicism is described. It is not known whether these 2 findings are related to the missing 21q material. The propositus is normal in appearance, and has none of the phenotypic features associated with the G-group deletion syndromes.