A single-arm confirmatory study of amrubicin therapy in patients with refractory small-cell lung cancer: Japan Clinical Oncology Group Study (JCOG0901)

Lung Cancer. 2014 Apr;84(1):67-72. doi: 10.1016/j.lungcan.2014.01.012. Epub 2014 Jan 25.

Abstract

Objectives: We conducted an open-label, multicenter, single-arm study to confirm the efficacy and safety of amrubicin (AMR), a topoisomerase II inhibitor, for treating refractory small-cell lung cancer (SCLC).

Patients and methods: Patients with chemotherapy-refractory SCLC received 40 mg/m(2) AMR for 3 consecutive days, every 21 days. The primary endpoint was the overall response rate (ORR) and the secondary endpoints were progression-free survival (PFS), overall survival (OS), and safety.

Results: Between November 2009 and February 2011, 82 patients were enrolled. Each patient received a median of four treatment cycles (range, 1-22 cycles). ORR was 32.9% [P<0.0001 by the exact binomial test for the null hypothesis that ORR ≤ 10%; 95% confidence interval (CI), 22.9-44.2%]. The median PFS and OS periods were 3.5 months (95% CI, 3.0-4.3 months) and 8.9 months (95% CI, 7.6-11.3 months), respectively. Significant differences in ORR (21.4% v 45.0%; P=0.034), PFS (median, 2.9 v 5.1 months; P=0.0009), and OS (median, 7.9 v 13.1 months; P=0.0128) were observed between patients previously treated with etoposide and others. Neutropenia was the most common grade 3 or 4 adverse events (93.9%), and febrile neutropenia developed in 26.8% patients. No treatment-related death occurred.

Conclusions: AMR monotherapy can be considered an effective and safe treatment option for refractory SCLC. Previous chemotherapy with etoposide may influence AMR efficacy.

Keywords: Amrubicin; Chemotherapy; Etoposide; Phase II; Refractory; Small-cell lung cancer.

Publication types

  • Clinical Trial
  • Multicenter Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Aged
  • Anthracyclines / administration & dosage
  • Anthracyclines / adverse effects
  • Anthracyclines / therapeutic use*
  • Antineoplastic Agents / administration & dosage
  • Antineoplastic Agents / adverse effects
  • Antineoplastic Agents / therapeutic use*
  • Female
  • Humans
  • Lung Neoplasms / drug therapy*
  • Lung Neoplasms / mortality
  • Male
  • Middle Aged
  • Retreatment
  • Small Cell Lung Carcinoma / drug therapy*
  • Small Cell Lung Carcinoma / mortality
  • Treatment Outcome

Substances

  • Anthracyclines
  • Antineoplastic Agents
  • amrubicin