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CLINICAL TRIAL
CLINICAL TRIAL, PHASE II
JOURNAL ARTICLE
MULTICENTER STUDY
RESEARCH SUPPORT, NON-U.S. GOV'T
Multicenter trial of low-dose paclitaxel in patients with advanced AIDS-related Kaposi sarcoma.
Cancer 2002 July 2
BACKGROUND: Treatment options are limited for patients with advanced acquired immunodeficiency syndrome (AIDS)-related Kaposi sarcoma (AIDS-KS) whose disease has progressed after receiving therapy with liposomal anthracyclines or combination chemotherapy with doxorubicin (Adriamycin), bleomycin, and vincristine (ABV). This study was performed to assess the safety and efficacy of a novel dose and schedule of paclitaxel in patients with AIDS-KS who failed to respond to previous systemic chemotherapy.
METHODS: This was an open-label, multicenter Phase II study. Eligible patients had advanced AIDS-KS consisting of at least 25 mucocutaneous lesions, visceral disease, or lymphedema, and had failed to respond to at least one previous systemic chemotherapy regimen. Patients were treated with paclitaxel at a dose of 100 mg/m(2) given intravenously over 3 hours, every 2 weeks. Primary efficacy end points were tumor response, time to progression, time to treatment failure, and survival. Quality of life and adverse events were evaluated using the Symptom Distress Scale (SDS) and the World Health Organization Toxicity Criteria, respectively.
RESULTS: One hundred and seven male patients with advanced AIDS-KS were enrolled from nine participating sites. The median entry CD4+ lymphocyte count was 41/mm(3) (range 0-1139). Previous treatment regimens included ABV in 52, liposomal daunorubicin in 49, and liposomal doxorubicin in 40 patients. Forty-one patients (38%) received two or more previous chemotherapy regimens. Protease inhibitor use during the study was reported by 82 (77%) patients overall; 47 patients (44%) were receiving a protease inhibitor before study entry. Complete or partial response was documented in 60 patients (56%). The median duration of response was 8.9 months. Major response rate was similar when comparing patients not on a protease inhibitor at the time of response (59%) with patients on a protease inhibitor at time of response (54%). However, protease inhibitor use had a significant impact on survival (P = 0.04). Grade 4 neutropenia was reported in 35% of patients; other life-threatening side effects were uncommon. Significant improvements were seen in the total quality of life scores measured by the SDS, including significant improvement in KS-related symptoms such as facial disease, tumor-associated edema, and pulmonary involvement.
CONCLUSION: Paclitaxel given every 2 weeks induces major tumor regression in the majority of patients with advanced KS who failed to respond to previous systemic chemotherapy. Paclitaxel is associated with significant improvement in quality of life with acceptable toxicity and should be considered as an effective treatment option for patients with advanced KS.
METHODS: This was an open-label, multicenter Phase II study. Eligible patients had advanced AIDS-KS consisting of at least 25 mucocutaneous lesions, visceral disease, or lymphedema, and had failed to respond to at least one previous systemic chemotherapy regimen. Patients were treated with paclitaxel at a dose of 100 mg/m(2) given intravenously over 3 hours, every 2 weeks. Primary efficacy end points were tumor response, time to progression, time to treatment failure, and survival. Quality of life and adverse events were evaluated using the Symptom Distress Scale (SDS) and the World Health Organization Toxicity Criteria, respectively.
RESULTS: One hundred and seven male patients with advanced AIDS-KS were enrolled from nine participating sites. The median entry CD4+ lymphocyte count was 41/mm(3) (range 0-1139). Previous treatment regimens included ABV in 52, liposomal daunorubicin in 49, and liposomal doxorubicin in 40 patients. Forty-one patients (38%) received two or more previous chemotherapy regimens. Protease inhibitor use during the study was reported by 82 (77%) patients overall; 47 patients (44%) were receiving a protease inhibitor before study entry. Complete or partial response was documented in 60 patients (56%). The median duration of response was 8.9 months. Major response rate was similar when comparing patients not on a protease inhibitor at the time of response (59%) with patients on a protease inhibitor at time of response (54%). However, protease inhibitor use had a significant impact on survival (P = 0.04). Grade 4 neutropenia was reported in 35% of patients; other life-threatening side effects were uncommon. Significant improvements were seen in the total quality of life scores measured by the SDS, including significant improvement in KS-related symptoms such as facial disease, tumor-associated edema, and pulmonary involvement.
CONCLUSION: Paclitaxel given every 2 weeks induces major tumor regression in the majority of patients with advanced KS who failed to respond to previous systemic chemotherapy. Paclitaxel is associated with significant improvement in quality of life with acceptable toxicity and should be considered as an effective treatment option for patients with advanced KS.
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