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Phase 2 study of canfosfamide in combination with pegylated liposomal doxorubicin in platinum and paclitaxel refractory or resistant epithelial ovarian cancer.

ABSTRACT: Canfosfamide is a novel glutathione analog activated by glutathione S-transferase P1-1. This study evaluated the safety and efficacy of canfosfamide in combination with pegylated liposomal doxorubicin (PLD) in patients with platinum resistant ovarian cancer. Patients with platinum resistant ovarian carcinoma and measurable disease received canfosfamide at 960 mg/m2 in combination with PLD at 50 mg/m2, intravenously day 1 in every 28 day cycles until tumor progression or unacceptable toxicities. The primary endpoints were objective response rate (ORR) and progression-free survival (PFS).Canfosfamide plus PLD combination therapy was administered at 960/50 mg/m2, respectively. Thirty-nine patients received a median number of 4 cycles (range 1.0-18.0). The ORR was 27.8% (95% CI, 14.2-45.2) with a disease stabilization rate of 80.6% (95% CI, 64.0-91.8) in the evaluable population. The CA-125 marker responses correlated with the radiological findings of complete response or partial response. The median PFS was 6.0 months (95% CI, 4.2-7.9) and median survival was 17.8 months. The combination was well tolerated. Myelosuppression was managed with dose reductions and growth factor support. Grade 3 febrile neutropenia was observed in 2 patients (5.1%). Non-hematologic adverse events occurred at the expected frequency and grade for each drug alone, with no unexpected or cumulative toxicities.Canfosfamide in combination with PLD is well tolerated and active in platinum and paclitaxel refractory or resistant ovarian cancer. A randomized phase 3 study was conducted based on this supportive phase 2 study.

SUBMITTER: Kavanagh JJ

PROVIDER: S-EPMC2851575 | biostudies-literature | 2010 Mar

REPOSITORIES: biostudies-literature

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Phase 2 study of canfosfamide in combination with pegylated liposomal doxorubicin in platinum and paclitaxel refractory or resistant epithelial ovarian cancer.

Kavanagh John J JJ Levenback Charles F CF Ramirez Pedro T PT Wolf Judith L JL Moore Carla L CL Jones Marsha R MR Meng Lisa L Brown Gail L GL Bast Robert C RC

Journal of hematology & oncology 20100311

<h4>Background</h4>Canfosfamide is a novel glutathione analog activated by glutathione S-transferase P1-1. This study evaluated the safety and efficacy of canfosfamide in combination with pegylated liposomal doxorubicin (PLD) in patients with platinum resistant ovarian cancer. Patients with platinum resistant ovarian carcinoma and measurable disease received canfosfamide at 960 mg/m2 in combination with PLD at 50 mg/m2, intravenously day 1 in every 28 day cycles until tumor progression or unacce ...[more]

PMID: 20222977

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Project description:BACKGROUND:Olaratumab is a platelet-derived growth factor receptor-? (PDGFR?)-targeting monoclonal antibody blocking PDGFR? signaling. PDGFR? expression is associated with a more aggressive phenotype and poor ovarian cancer outcomes. This randomized, open label phase II study evaluated olaratumab plus liposomal doxorubicin compared with liposomal doxorubicin alone in advanced ovarian cancer patients. METHODS:Patients with platinum-refractory or platinum-resistant advanced ovarian cancer were randomized 1:1 to receive liposomal doxorubicin (40?mg/m2, intravenous infusion) administered every 4?weeks with or without olaratumab (20?mg/kg, IV infusion) every 2?weeks. Patients were stratified based on prior response to platinum therapy (refractory vs resistant). The primary efficacy endpoint was progression-free survival (PFS). Secondary endpoints included overall survival (OS), objective response rate, duration of response, and safety. RESULTS:A total of 123 patients were treated (62 olaratumab+liposomal doxorubicin; 61 liposomal doxorubicin). Median PFS was 4.2?months for olaratumab+liposomal doxorubicin and 4.0?months for liposomal doxorubicin (stratified hazard ratio [HR]?=?1.043; 95% confidence interval [CI] 0.698-1.558; p?=?0.837). Median OS was 16.6?months and 16.2?months in the olaratumab+liposomal doxorubicin and liposomal doxorubicin arms, respectively (HR?=?1.098; 95% CI 0.71-1.71). In the platinum-refractory subgroup, median PFS was 5.5?months (95% CI 1.6-9.2) and 3.7?months (95% CI 1.9-9.2) in the olaratumab+liposomal doxorubicin (n?=?15) and liposomal doxorubicin arms (n?=?16), respectively (HR?=?0.85; 95% CI 0.38-1.91). Overall, 59.7% (olaratumab+liposomal doxorubicin) and 65.6% (liposomal doxorubicin) of patients reported grade???3 adverse events regardless of causality. The most common treatment-emergent adverse events (all grades) regardless of causality were fatigue related (61%), nausea (57%), and constipation (52%) with olaratumab+liposomal doxorubicin and nausea (64%), fatigue related (62%), and mucositis (46%) with liposomal doxorubicin. CONCLUSIONS:The addition of olaratumab to liposomal doxorubicin did not result in significant prolongation of PFS or OS in platinum-resistant or platinum-refractory ovarian cancer. TRIAL REGISTRATION:ClinicalTrials.gov identifier: NCT00913835 ; registered June 2, 2009.

Dataset Information

Phase 2 study of canfosfamide in combination with pegylated liposomal doxorubicin in platinum and paclitaxel refractory or resistant epithelial ovarian cancer.

Publications

Phase 2 study of canfosfamide in combination with pegylated liposomal doxorubicin in platinum and paclitaxel refractory or resistant epithelial ovarian cancer.

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