- Treatment with ganciclovir (DHPG) resulting in dose-limiting toxicity (absolute neutrophil count (= polymorphonuclear leukocytes plus bands) < 500 cells/mm3 or platelets < 25000 platelets/mm3) occurring on = or > two documented occasions at least 7 days apart while receiving up to a maximum induction regimen of 10 mg/kg/day or a maintenance regimen of up to 5 mg/kg/day. Neutropenia should not be the result of zidovudine (AZT) treatment.