PEDIATRICS Vol. 55 No. 1 January 1975, pp. 114-118
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T-CeII Reconstitution by Thymus Transplantation and Transfer Factor in Severe Combined lmmunodeficiency

Gary S. Rachelefsky M.D.1, E. Richard Stiehm M.D.1, Arthur J. Ammann M.D.1, Stephen D. Cederbaum M.D.1, Gerhard Opelz M.D.1, and Paul I. Terasaki Ph.D.1

1 Departments of Pediatrics, Surgery, and Psychiatry, University of California School of Medicine, Los Angeles, and the Department of Pediatrics, University of California Medical Center, San Francisco

Reconstitution of cell-mediated immunity was achieved in a 5-month-old female infant with severe combined immunodeficiency by fetal thymus transplant given simultaneously with two units of transfer factor. The thymus was obtained from a 15-week gestational age male fetus, and the two units of transfer factor from the lymphocytes of 500 ml of peripheral blood. Three weeks after transplantation, two new HL-A antigens were detected on the infant's lymphocytes, one of which was present in the mother of the thymus donor; at the same time, some of the infant's own HL-A antigens disappeared. Thereafter, the percent of rosetteforming cells (T-cells) increased and the in vitro response to phytohemagglutinin and allogeneic lymphocytes became normal, and delayed skin tests became positive. Karyotyping of peripheral blood lymphocytes posttransplantation reveals an XY (male) pattern. These results suggest lymphocyte repopulation as a result of the thymus-transfer factor therapy. Five months after transplantation, the patient has normal cellular immunity but persistent hypogammaglobulinemia. She is free of infection and growing normally on gammaglobulin injections.

Submitted on March 12, 1974
Accepted on April 15, 1974