RELATIONSHIP BETWEEN RESPONSE RATE AND MEDIAN SURVIVAL IN PATIENTS WITH ADVANCED NONSMALL CELL LUNG-CANCER - COMPARISON OF ONCONASE(R) WITH OTHER ANTICANCER AGENTS
The role of systemic cytotoxic therapy for the treatment of advanced non-small cell lung cancer (NSCLC) remains controversial. The response rate (RR) and the median survival time (MST) are the two most frequently used parameters for the assessment of efficacy of the anti-cancer therapies. The relationship between the previously reported RRs and MSTs from published chemotherapy trials in patients with advanced NSCLC was examined using linear regression analysis. The MST of the thirty patients with advanced NSCLC treated with ONCONASE (ONC) as a single agent was 7.7 months which compared favorably with the MSTs of patients treated with a variety of chemotherapeutic regimens either as single agents or combinations, as well as placebo and supportive care only. Moreover, the toxicity profile of ONC compared favorably to the profiles of other chemotherapy regimens. ONC had a favorable impact on the overall MST, including patients with stage IV disease, patients with poor performance status, and patients previously treated with radiotherapy and chemotherapy. The MST of 5 patients who had a stabilization of previously progressive disease was 9.3 months. Based on its positive impact on the MST, ONC appears to have a single agent activity in patients with advanced NSCLC, and it should be further investigated, particularly in combination with synergistic drugs, in concurrently controlled and prospectively randomized clinical trials. The duration and the quality of survival should be considered as the most meaningful parameters in assessing clinical efficacy of anti-cancer agents.
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Document Type: Research Article
Affiliations: NEW YORK MED COLL,DIV NEOPLAST DIS,VALHALLA,NY 10595. THOMPSON CANC SURVIVAL CTR,KNOXVILLE,TN 37916. LONE STAR ONCOL CONSULTANTS,AUSTIN,TX 78759.
Publication date: April 1, 1995
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