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Human leukocyte antigen class II associations in patients with idiopathic dilated cardiomyopathy. Myocarditis Treatment Trial Investigators.

Authors: Lozano, M D  Rubocki, R J  Wilson, J E  McManus, B M  Wisecarver, J L 
Citation: Lozano MD, etal., J Card Fail. 1997 Jun;3(2):97-103.
Pubmed: (View Article at PubMed) PMID:9220309

BACKGROUND: Idiopathic dilated cardiomyopathy (IDC) is a disease of unknown etiology for which immune abnormalities, possibly related to viral infections, are suspected but unproven. Previous serologic studies have reported associations between human leukocyte antigen DR4 and IDC. A molecular study of human leukocyte antigen associations was undertaken in patients with IDC to further explore the possibility of susceptibility markers of genetically determined disease.
METHODS AND RESULTS: In this study, 36 patients from the Myocarditis Treatment Trial (32 IDC and 4 myocarditis patients) were examined using restriction fragment length polymorphism analysis and polymerase chain reaction amplification with sequence-specific primers to perform class II typing. All 4 myocarditis patients were DQ5 positive and 3 possessed the allele DQB1*0501. In the IDC group, the frequency of human leukocyte antigen DR4 was similar to that reported in the normal population. In addition, there was no excess prevalence of any molecularly defined DR4 alleles (0401-0419). There was an increase in the frequency of DR12 in IDC patients. The frequencies of the alleles DQB1 *0503 and DQB1*0301 and/or *0304 were also increased in IDC patients versus the normal population.
CONCLUSION: The molecular studies point to a relationship between the DQ locus and IDC.


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CRRD Object Information
CRRD ID: 13702906
Created: 2018-07-24
Species: All species
Last Modified: 2018-07-24
Status: ACTIVE


RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.