Molecular Definition of the Shortest Region of Deletion Overlap in the Langer-Giedion Syndrome

Overview

Journal Am J Hum Genet

Publisher Cell Press

Specialty Genetics

Date 1991 Dec 1

PMID 1836105

Citations 13

Authors

H J Ludecke

C JOHNSON

M J Wagner

D E Wells

C Turleau

N Tommerup

A Latos-Bielenska

K R SANDIG

P Meinecke

B Zabel

Affiliations

Soon will be listed here.

Abstract

The Langer-Giedion syndrome (LGS), which is characterized by craniofacial dysmorphism and skeletal abnormalities, is caused by a genetic defect in 8q24.1. We have used 13 anonymous DNA markers from an 8q24.1-specific microdissection library, as well as c-myc and thyroglobulin gene probes, to map the deletion breakpoints in 16 patients with LGS. Twelve patients had a cytogenetically visible deletion, two patients had an apparently balanced translocation, and two patients had an apparently normal karyotype. In all cases except one translocation patient, loss of genetic material was detected. The DNA markers fall into 10 deletion intervals. Clone L48 (D8S51) defines the shortest region of deletion overlap (SRO), which is estimated to be less than 2 Mbp. Three clones--p17-2.3 EE (D8S43), L24 (D8S45), and L40 (D8S49) - which flank the SRO recognize evolutionarily conserved sequences.

Citing Articles

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