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Published on: February 12, 2017
Oxaliplatin and irinotecan plus granulocyte-colony stimulating factor as third-line treatment in relapsed or
Dimitrios Pectasides1, Melina Pectasides, Dimitrios Farmakis
1Second Department of Internal Medicine-Propaedeutic, Athens University Medical School, Attikon University Hospital, Athens, Greece. pectasid@otenet.gr
Objective:
To investigate the efficacy and tolerability of the combination of oxaliplatin and irinotecan in patients with relapsed or cisplatin-refractory germ cell tumors (GCT).
Patients And Methods:
Eighteen patients with relapsed or cisplatin-refractory GCT were treated with oxaliplatin 85 mg/m(2) on days 1 and 15, followed by irinotecan 80 mg/m(2) on days 1, 8 and 15, every four weeks for a maximum of six cycles.
Results:
All patients were assessable for response and toxicity. Overall, 7 patients (40%) achieved a favorable response (4 complete and 3 partial responses). One of the complete responders relapsed after 2.5 months and despite further treatment with high dose chemotherapy, he died two months later. The remaining 3 patients are continuously disease free for 11+, 14+ and 19+ months. The partial responders subsequently progressed and died after 2, 3 and 4.5 months, respectively. None of the patients with extragonadal mediastinal GCT responded to oxaliplatin and irinotecan chemotherapy. The investigated combination has a good tolerance. Neutropenia related toxicity (grade 3/4, 17%), neutropenic infections and sepsis were not common probably due to prophylactic use of hematopoietic colony stimulating factor (G-CSF). Thrombocytopenia and anemia were not a serious problem. Gastrointestinal side effects, specifically grade 3/4 diarrhea and nausea/vomiting were noted in 22% and 28% of patients, respectively. Oxaliplatin-associated neurotoxicity was rather low; grade 3 peripheral sensory neuropathy was recorded in 11% of patients.
Conclusion:
The combination of oxaliplatin and irinotecan is feasible and associated with significant clinical antitumor activity, mild and manageable toxicity and easy outpatient administration in patients with relapsed or cisplatin-refractory germ cell cancer. This combination seems to offer a possibility for long-term disease-free status (17%), despite the poor prognostic features of the study patient group.
