Consanguinity in Primary Immunodeficiency Disorders; the Report From Iranian Primary Immunodeficiency Registry Publisher Pubmed



Rezaei N¹ ; Pourpak Z¹ ; Aghamohammadi A¹ ; Farhoudi A¹ ; Movahedi M¹ ; Gharagozlou M¹ ; Mirsaeid Ghazi B¹ ; Atarod L¹ ; Abolmaali K¹ ; Mahmoudi M¹ ; Mansouri D² ; Arshi S³ ; Tarash NJ³ ; Sherkat R⁴ Show All Authors
Source: American Journal of Reproductive Immunology Published:2006

Abstract

Problem: Primary Immunodeficiency Disorders (PiD) are a heterogeneous group of genetic disorders, with different modes of inheritance. This study was accomplished in order to determine the frequency of consanguineous marriages in the families of patients with PiD. Method: In this study, the records 515 Iranian PiD patients were reviewed during a 25-year period. Results: The mean proportion of consanguineous marriages was 65.6% among PiD patients, while the overall rate was 38.6% in the country. The rate of consanguinity was 77.8% in cellular immunodeficiencies, 75.8% in combined immunodeficiencies, 72.5% in defects of phagocytic function, 58.6% in other immunodefiiencies, 54.1% in predominantly antibody deficiencies, and 50% in complement deficiencies. Moreover all patients with immunodeficiency associated with other diseases had consanguineous parents. Such marriages were most common in the parents of patients with Chediak-Higashi syndrome, severe combined immunodeficiencies, primary CD4 deficiency, ataxia-telangiectasia, seletive IgG class deficiencies, chronic granulomatous disease, and Schwachman syndrome. Conclusions: It is important to inform the general population about the dangers of consanguinity, which is very common in some areas such as Iran. Premarital examination to avoid genetic diseases could be suggested, especially in a community where the rate of consanguineous marriage is high. © 2006 The Authors Journal compilation © 2006 Blackwell Munksgaard.