A case of penta X syndrome caused by nondisjunction in maternal meiosis 1 and 2.
Sara MarkholtJesper GraakjaerSigne Bødker ThimBente HøstAnne-Bine SkyttePublished in: Clinical case reports (2017)
The prenatal abnormalities in patients with penta X syndrome appear late in pregnancy and are nonspecific. In contrast, the postnatal phenotype is well described although new findings are still revealed. Penta X syndrome is a result of successive nondisjunctions of the X chromosomes in both maternal meiotic divisions.