Mitochondrial DNA haplogroups in Spanish patients with hypertrophic cardiomyopathy.
Mutations in mtDNA have been implicated in the development of hypertrophic cardiomyopathy (HCM), including cases from families with a maternal transmission. Alleles at several polymorphic sites in mtDNA define different haplogroups and some of these haplogroups have been involved in the risk of developing several diseases in which mitochondria should be involved. We analysed the association between the nine common European haplogroups and HCM. A total of 130 Spanish patients and 300 healthy controls were genotyped for eight mitochondrial single nucleotide polymorphisms (SNPs) through polymerase chain reaction followed by digestion with a restriction enzyme (PCR-RFLP). We compared the frequencies of these polymorphisms and mitochondrial haplogroups between patients and controls. Haplogroup T, specifically defined by 13368A, was significantly involved in the risk of developing HCM in our population (p=0.007; OR=2.42; 95% CI=1.25-4.67). Our data suggest that the genetic variation at the mitochondrial genome could significantly contribute to the risk for HCM.
Castro
Mónica G
MG
Genética Molecular-Instituto de Estudios Nefrológicos, Hospital Central de Asturias-Maternidad 33006, Oviedo, Spain.
Huerta
Cecilia
C
Reguero
Julián R
JR
Soto
María Isabel
MI
Doménech
Enric
E
Alvarez
Victoria
V
Gómez-Zaera
Montse
M
Nunes
Virginia
V
González
Pelayo
P
Corao
Ana
A
Coto
Eliecer
E
D000328:Adult; D000368:Aged; D002312:Cardiomyopathy, Hypertrophic / Q000453:epidemiology / Q000235:genetics*; D004272:DNA, Mitochondrial / Q000235:genetics*; D005260:Female; D005787:Gene Frequency; D005838:Genotype; D006239:Haplotypes; D006801:Humans; D008297:Male; D008875:Middle Aged; D016133:Polymerase Chain Reaction; D020641:Polymorphism, Single Nucleotide; D012307:Risk Factors; D013030:Spain; D044465:White People / Q000235:genetics*
D004272:DNA, Mitochondrial