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  • Title: Weekly doxorubicin versus doxorubicin every 3 weeks in cyclophosphamide, doxorubicin, and cisplatin chemotherapy for non-small cell lung cancer.
    Author: Umsawasdi T, Valdivieso M, Booser DJ, Barkley HT, Ewer M, MacKay B, Dhingra HM, Murphy WK, Spitzer G, Chiuten DF.
    Journal: Cancer; 1989 Nov 15; 64(10):1995-2000. PubMed ID: 2553235.
    Abstract:
    A prospective randomized study was done to determine the effect of different doxorubicin (Adriamycin [ADR], Adria Laboratories, Columbus, OH) administration (schedules every week versus every 3 weeks) on the productivity of a cyclophosphamide, ADR, cisplatin (CAP) chemotherapy regimen for patients with non-small cell lung cancer (NSCLC). Electrocardiograms, multigated cardiac scans, echocardiograms, and endomyocardial biopsies were done serially for cardiac monitoring. Of 102 patients, 47 ahd inoperable limited disease (LD), 47 had extensive disease (ED), and eight had no evidence of disease. In the last group chemotherapy was given adjuvantly. Fifty-one patients were entered into each treatment arm. The groups were formed according to extent of disease and were comparable in terms of patient characteristics. In these groups, the overall response rates using both schedules in LD patients were similar: in patients without chest irradiation previously, there was a response of 35% with ADR weekly, and 31% with ADR triweekly; in LD patients with chest irradiation previously, the response was 20% with ADR weekly, and 25% with ADR triweekly; and in ED patients, 16% with ADR weekly, and 11% with ADR triweekly. There was no significant difference in survival between the two treatment groups. However, results for all responders suggested a longer duration of response with weekly than with triweekly ADR (complete plus partial response: 35.8 versus 11.4 weeks, P = 0.06; minor response: 34 versus 11.5 weeks, P = 0.003, respectively). Results also suggested that weekly ADR was less cardiotoxic than triweekly ADR: 29% of patients in the former group had no changes or only minor changes in endomyocardial biopsy results, whereas all patients in the latter group had at least grade 0.5 changes at a similar dosage. The median doses of weekly ADR were higher at the same endomyocardial biopsy-defined toxicity levels. No correlation was found between toxic effects defined by endomyocardial biopsy results and those defined by noninvasive monitoring techniques, although the number of patients assessed was small. Weekly ADR produced less granulocytopenia and a lower incidence of fever (6% versus 16%, P less than 0.001) than did triweekly ADR. Alopecia, nausea, vomiting, and diarrhea were significantly less for weekly ADR than triweekly Adr (P less than 0.0005, less than 0.0005, and less than 0.005, respectively). These data suggest that weekly ADR can achieve the same therapeutic results as the standard triweekly regimen with less cardiotoxicity, myelotoxicity, alopecia, diarrhea, nausea, and vomiting in patients with NSCLC.
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