Efficacy and Safety of Nanosomal Docetaxel Lipid Suspension-Based Chemotherapy in Sarcoma: A Multicenter, Retrospective Study

OBJECTIVE: To evaluate the efficacy and safety of nanosomal docetaxel lipid suspension (NDLS, DoceAqualip) based chemotherapy in patients with sarcoma. METHODS: In this retrospective, multicenter (6 centers), observational study, we analyzed the medical charts of adult patients of either sex, who were treated with NDLS (75 mg/m(2) in 3-weekly cycles) based chemotherapy for the treatment of sarcoma. The efficacy outcomes were overall response rate (ORR: complete response (CR) + partial response (PR)) and disease control rate (DCR: CR + PR + stable disease (SD)) in patients who received NDLS-based chemotherapy in neoadjuvant and metastatic settings. Overall survival (OS) and safety were evaluated for all settings. RESULTS: Of 11 patients (neoadjuvant: 1, adjuvant: 3, and metastatic: 7) in this study, majority had leiomyosarcoma (63.6%, 7/11) followed by extraskeletal myxoid chondrosarcoma (EMC), high grade pleomorphic sarcoma of mandible, malignant fibrous histiocytoma of right thigh, and osteosarcoma of femur (9.1% each, 1/11 each). NDLS plus gemcitabine combination was used in 10 patients (90.9%), and NDLS plus cyclophosphamide was used in one patient with EMC (9.1%). Efficacy evaluation was performed for 7 patients (neoadjuvant: 1/1; metastatic: 6/7). Complete response was reported in one patient (soft tissue sarcoma of mandible) treated in neoadjuvant setting. In metastatic setting, ORR was 50% and DCR was 66.7% (CR: 16.7% (1/6), PR: 33.3% (2/6), SD: 16.7% (1/6)). At a median follow-up of 6.5 months (range: 0.06–20.2 months), median OS was not reached in neoadjuvant and adjuvant settings, but it was 15.8 months in metastatic setting. At least 1 AE was reported in 7 (63.6%) patients. Neutropenia, thrombocytopenia, lymphopenia, and anemia were the hematological AEs, whereas nausea, vomiting, and diarrhea were the most common nonhematological AEs. NDLS treatment was well tolerated without any new safety concerns. CONCLUSION: Nanosomal docetaxel lipid suspension-based chemotherapy was efficacious and well tolerated in the treatment of sarcoma. Further prospective trials are needed to confirm the data.