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Concordance With Lymphocyte Ecto-5'-Nucleotidase Deficiency

Kenneth C. Rich, MD; Hugh Sampson, MD; Lawrence N. Edwards, MD; Irving H. Fox, MD

Am J Dis Child. 1981;135(9):795-798.

Abstract
• Four male subjects from two generations of a black family were found to have variable expression of hypogammaglobulinemia (IgG, IgM, and IgA deficiency in two, IgA deficiency in one, and IgM and IgA deficiency in another) and also to be moderately deficient in the lymphocyte plasma membrane enzyme, 5'-nucleotidase. The inheritance pattern of the immune abnormality is compatible with X linkage. The affected patients had normal numbers of complement receptor-bearing lymphocytes, variably depressed proportions of IgM- and IgD-bearing lymphocytes, and impaired ability to synthesize antibody after specific antigenic stimulation. In this family, the 5'-nucleotidase deficiency and the pattern of inheritance suggest that the different types of hypogammaglobulinemia may represent a variable expression of a common underlying genetic abnormality.

(Am J Dis Child 1981;135:795-798)

Author Affiliations
From the Department of Pediatrics, Northwestern University Medical School, The Children's Memorial Hospital, Chicago (Drs Rich and Sampson); and the Human Purine Research Center, Departments of Internal Medicine (Drs Edwards and Fox) and Biological Chemistry (Dr Fox), Clinical Research Center, University of Michigan Hospital, Ann Arbor.

Footnotes
Reprint requests to Division of Immunology, The Children's Memorial Hospital, 2300 Children's Plaza, Chicago, IL 60614 (Dr Rich).

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