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Am J Med Genet. 1991 Jul 1;40(1):51-6.

Penta X syndrome: a case report with review of the literature.

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1
Department of Pediatrics, National Hakodate Hospital, Japan.

Abstract

We describe a 6 month-old girl with a 49, XX-XXX chromosome constitution. The patient had a characteristic round face, a low hairline, hypertelorism, epicanthus, a long philtrum, high-arched palate, short and webbed neck, small hands and feet, clinodactyly of the fifth fingers, overlapping toes, and separation between the first and the second toes. She also had atrial septal defect and patent ductus arteriosus complicated by myocarditis which exacerbated the course of her congestive heart failure. Psychomotor development was retarded with opisthotonoid posture, axial hypotonia, and with a borderline abnormal EEG. A densitometric, transmission analysis on X-linked polymorphic DNA-fragments of the Southern blots of the patient and the parents, using P20/MspI and pERT87-1/XmnI as probe/enzyme combinations, showed that the pentasomy X had resulted from 3 successive nondisjunctions at maternal meiosis. Clinical manifestations among 22 previously reported penta X syndrome patients are also reviewed.

PMID:
1887850
DOI:
10.1002/ajmg.1320400110
[Indexed for MEDLINE]
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