Acquired-immunodeficiency-like syndrome in two haemophiliacs.

The immunological status of two multiply transfused patients with severe haemophilia A and diffuse lymphadenopathy was evaluated. But patients appeared clinically well and denied homosexuality or intravenous drug abuse. Immunological studies revealed depressed cellular immune function with anergy, relative lymphopenia, decreased T helper cells, and increased T suppressor cells in both patients and an altered T-helper-cell/T-suppressor-cell ratio in one. Hyperresponsiveness of the humoral immune system was demonstrated by elevated IgG and IgM. Lymph-node biopsy revealed benign nonspecific hyperplasia in both patients. The lymphadenopathy and immunological features in these two haemophiliacs bear a striking resemblance to the acquired immunodeficiency syndrome (AIDS) of homosexuals, intravenous drug abusers, and Haitian immigrants. These findings may represent a prodromal phase or a forme fruste of AIDS. Transmission of an infectious agent in blood products seems likely.