Phase II trial of piroxantrone in gastric carcinoma. A Southwest Oncology Group study

Twenty-one evaluable patients with advanced gastric adenocarcinoma were treated with piroxantrone at a dose of 150 mg/m2 intravenously every 21 days. One objective response was seen for an overall response rate of 5% (95% confidence interval 0-24%). Toxicities of grade > or = 3 were primarily hematologic and seen in 13/21 patients. Piroxantrone has minimal activity against gastric adenocarcinoma and no further investigation of this agent on this schedule in this disease is recommended.