Cisplatin plus etoposide consolidation following cyclophosphamide, doxorubicin, and vincristine in limited small-cell lung cancer.
From June 1982 through October 1985, the Southeastern Cancer Study Group randomized patients with limited small-cell lung cancer (SCLC) to cyclophosphamide plus doxorubicin (Adriamycin, Adria Laboratories, Columbus, OH) plus vincristine (CAV) for six cycles v CAV plus concomitant thoracic irradiation as induction therapy. Patients achieving either a complete or partial response and remaining in remission after completion of induction therapy were subsequently randomized to consolidation chemotherapy consisting of cisplatin 20 mg/m2 X 4 plus etoposide (VP-16) 100 mg/m2 X 4 every 4 weeks for two courses v no further therapy. There were 160 patients entered on the consolidation phase and 148 were fully evaluable. The median survival for patients randomized to cisplatin plus VP-16 (PVP16) from start of CAV chemotherapy was 97.7 weeks, compared with 68 weeks for the no-consolidation arm (P = .0094). PVP16 consolidation also significantly increased the duration of remission, with median durations of 49 weeks v 28 weeks (P = .0008). The median durations for partial remission were 41 weeks v 23 weeks (P = .013), and for complete remission, 52 weeks v 30.5 weeks (P = .0091). Furthermore, 18 patients on PVP16 consolidation remain in a continuous complete remission for 12+ months and 13 of these are continuously disease free 2+ years. Eight patients randomized to no consolidation remain in a continuous complete remission, with only four patients disease free 2+ years. PVP16 consolidation has significantly improved the duration of remission and overall survival and appears capable of improving the cure rate in limited SCLC.
Einhorn, LH; Crawford, J; Birch, R; Omura, G; Johnson, DH; Greco, FA
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