Chronic Idiopathic Thrombocytopenic Purpura
- 6 March 1978
- journal article
- research article
- Published by American Medical Association (AMA) in JAMA
- Vol. 239 (10) , 939-942
- https://doi.org/10.1001/jama.1978.03280370035020
Abstract
We studied three children with chronic idiopathic thrombocytopenic purpura (ITP) and their immediate families. All three patients and 10/13 family members manifested at least one immunologic defect, eg, decreased numbers of T lymphocytes (1/3, 5/13), diminished in vitro response to phytohemagglutinin (2/3, 6/13), dysgammaglobulinemia (2/3, 4/13), altered autoantibodies (1/3, 5/13), and decreased serum properdin levels (3/3,2/13). In addition, one parent and two asymptomatic siblings of two of the propositi had shortened platelet life spans with normal platelet counts. The HLA antigens A3and B7were identified in all three families. There also appeared to be an association between a familial haplotype and the immunologic defects. Chronic ITP appears to occur in families with underlying immunologic defects, which are genetically related. (JAMA239:939-942, 1978)Keywords
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