This prospective Phase II study assesses the clinical efficacy and complica
tions of a treatment regimen of combination chemotherapy with cyclophospham
ide and carboplatin and selective consolidation in advanced seminoma, Of 46
patients who entered the study between December 1992 and October 1998, 46
were evaluable. Thirty-two achieved a complete remission (70%; 95% confiden
ce interval, 56-83%) after chemotherapy alone. Fourteen achieved a complete
remission (30%; 95% confidence interval, 18-46%) after chemotherapy plus c
onsolidation. Forty-three of the 46 patients (93%; 95% confidence interval,
82-97%) remained in remission after a median follow-up period of 27.4 mont
hs, No patient experienced nephrotoxic, neurotoxic, or ototoxic effects or
hemorrhagic cystitis, No patient had neutropenic fever requiring hospitaliz
ation. Thirteen % required platelet transfusions, and 9% required transfusi
ons of packed RBCs, For patients with advanced seminoma, treatment with cyc
lophosphamide and carboplatin and selective consolidation is safe and effec
tive.