JMH variants: serologic, clinical, and biochemical analyses in two cases

Transfusion
R MudadM J Telen

Abstract

JMH is a high-frequency red cell blood group antigen that resides on a 76- to 80-kDa glycosylphosphatidylinositol-linked protein also known as CDw108. Antibodies with JMH specificity are often autoimmune and are usually, if not always, clinically benign. Some individuals with JMH-variant antigen produce alloantibodies to JMH, but little evidence concerning their clinical significance is available. This article reports on two patients who express a JMH-variant antigen and produced alloanti-JMH. Murine monoclonal antibodies and human antibodies to JMH were used in hemagglutination, radioimmunoassay, and Western blot testing of red cells from two JMH-variant patients; antiserum from one of these patients was also used in biochemical studies. In addition, in vivo survival of JMH-positive red cells was studied in the same patient. Biochemically, both examples of red cells with the JMH-variant phenotype expressed a JMH protein with a molecular weight similar to that of the normal JMH protein. For both patients, family studies suggested an autosomal recessive pattern of inheritance. Survival study demonstrated reduced in vivo red cell survival in one patient. JMH-variant phenotypes express a protein of normal molecular weight and are ...Continue Reading

Citations

Jan 22, 2013·Seminars in Cell & Developmental Biology·Bart C JongbloetsR Jeroen Pasterkamp
Sep 22, 2010·Vox Sanguinis·M RichardM St-Louis
Aug 1, 2012·Transfusion·Christiane GrasConstança Figueiredo
Nov 26, 1999·Biochimica Et Biophysica Acta·M Tomita
May 23, 2021·Clinical and Experimental Immunology·Zhaohu YuanXuexin Yang

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