PMID: 18714534Aug 22, 2008Paper

Alterations in humoral immunity in relatives of patients with common variable immunodeficiency

Journal of Investigational Allergology & Clinical Immunology
A AghamohammadiZ Pourpak

Abstract

It has been reported that there is a high prevalence of immunodeficiency and autoimmunity in relatives of patients with common variable immunodeficiency (CVID). The aim of this study was to determine the prevalence of immunoglobulin deficiency in relatives of patients with CVID in Iran, where there is a high rate of consanguineous marriage. A descriptive study was undertaken in 64 family members of 23 unrelated CVID patients. The group contained 17 fathers, 18 mothers, 18 sisters, 9 brothers, and 2 children. Serum immunoglobulin levels were measured by nephelometry. Immunoglobulin (Ig) G subclass levels were measured in a subgroup of 36 individuals. Serum IgA levels were confirmed by enzyme-linked immunosorbent assay for subjects with suspected IgA deficiency. The rate of consanguineous marriage in families containing relatives with antibody deficiencies was significantly higher than in those families in whom relatives did not have immune deficiencies. IgA deficiency was observed in 2 relatives of patients with CVID. Also CVID was observed in 2 family members. In 3 fathers and 1 brother, IgM levels were lower than normal. Three relatives had IgG4 deficiency and 1 person had combined IgG4 and IgG2 deficiency. Twenty percent of t...Continue Reading

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