Effect of 9-(1,3-Dihydroxy-2-Propoxymethyl) Guanine on Serious Cytomegalovirus Disease in Eight Immunosuppressed Homosexual Men

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Abstract
Eight immunosuppressed homosexual men with cytomegalovirus viremia, seven with serious bilateral retinitis, one with colitis in addition to retinitis, and one with pneumonitis only, were treated with a new acyclovir derivative, 9-(1,3-dihydroxy-2-propoxymethyl) guanine, which has excellent in-vitro activity against cytomegalovirus. All patients had virologic and clinical improvement, but substantial leukopenia developed in three patients. Both clinical relapses and viral relapses occurred frequently, usually within 30 days after cessation of treatment. 9-(1,3-Dihydroxy-2-propoxymethyl) guanine represents the first clinically and virologically effective agent for the treatment of cytomegalovirus disease, but more effective and less toxic therapeutic regimens for both acute and chronic use must be developed.