Lack of MEF2A Δ7aa mutation in Irish families with early onset ischaemic heart disease, a family based study.

Autor: Horan, Paul G, Allen, Adrian R, Hughes, Anne E, Patterson, Chris C, Spence, Mark, McGlinchey, Paul G, Belton, Christine, Jardine, Tracy CL, McKeown, Pascal P
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Zdroj: BMC Medical Genetics; 2006, Vol. 7, p65-4, 4p, 2 Charts
Abstrakt: Background: Ischaemic heart disease (IHD) is a complex disease due to the combination of environmental and genetic factors. Mutations in the MEF2A gene have recently been reported in patients with IHD. In particular, a 21 base pair deletion (Δ7aa) in the MEF2A gene was identified in a family with an autosomal dominant pattern of inheritance of IHD. We investigated this region of the MEF2A gene using an Irish family-based study, where affected individuals had early-onset IHD. Methods: A total of 1494 individuals from 580 families were included (800 discordant sib-pairs and 64 parent-child trios). The Δ7aa region of the MEF2A gene was investigated based on amplicon size. Results: The Δ7aa mutation was not detected in any individual. Variation in the number of CAG (glutamate) and CCG (proline) residues was detected in a nearby region. However, this was not found to be associated with IHD. Conclusion: The Δ7aa mutation was not detected in any individual within the study population and is unlikely to play a significant role in the development of IHD in Ireland. Using family-based tests of association the number of tri-nucleotide repeats in a nearby region of the MEF2A gene was not associated with IHD in our study group. [ABSTRACT FROM AUTHOR]
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