✦ LIBER ✦

A rapid protocol for cardiac troponin T gene mutation detection in familial hypertrophic cardiomyopathy

✍ Scribed by Brenda Gerull; Karl-Josef Osterziel; Christian Witt; Rainer Dietz; Ludwig Thierfelder

Publisher: John Wiley and Sons
Year: 1998
Tongue: English
Weight: 143 KB
Volume: 11
Category: Article
ISSN: 1059-7794
DOI: 10.1002/(sici)1098-1004(1998)11:2<179::aid-humu12>3.0.co;2-w

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✦ Synopsis

Mutations in the human cardiac troponin T gene (TNNT2) are associated with familial hypertrophic cardiomyopathy (FHC) linked to chromosome 1q3 (CMH2). Mutation analyses of TNNT2 have been restricted to RNA-based screening methods because only the TNNT2 cDNA sequence was known. We characterized the genomic structure of 15 TNNT2 exons spliced into the adult isoform. A protocol for rapid mutation detection based on direct sequencing of large PCR-amplified genomic DNA fragments revealed a known TNNT2 mutation (Phe110Ile) in one of 30 FHC probands. Three polymorphic short tandem repeat elements (D1S477, D1S2622, and D1S1723), useful for FHC pedigree analyses at CMH2, were shown to be physically tightly linked to TNNT2.

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