Affiliation:
1. From the Center for Human Genetics, Departments of Pediatrics and Medicine, Boston University School of Medicine, Boston, MA; the Boston University School of Public Health, Boston, MA; and the Department of Medicine, University of California at San Francisco and San Francisco General Hospital, San Francisco, CA.
Abstract
In patients with sickle cell disease, clinical complications including osteonecrosis can vary in frequency and severity, presumably due to the effects of genes that modify the pathophysiology initiated by the sickle mutation. Here, we examined the association of single nucleotide polymorphisms (SNPs) in candidate genes (cytokines, inflammation, oxidant stress, bone metabolism) with osteonecrosis in patients with sickle cell disease. Genotype distributions were compared between cases and controls using multiple logistic regression techniques. An initial screen and follow-up studies showed that individual SNPs and haplotypes composed of several SNPs in bone morphogenic protein 6, annexin A2, and klotho were associated with sickle cell osteonecrosis. These genes are important in bone morphology, metabolism, and vascular disease. Our results may provide insight into the pathogenesis of osteonecrosis in sickle cell disease, help identify individuals who are at high risk for osteonecrosis, and thus allow earlier and more effective therapeutic intervention.
Publisher
American Society of Hematology
Subject
Cell Biology,Hematology,Immunology,Biochemistry
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