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  • Title: [Oral high doses of medroxyprogesterone acetate (MPA) in the treatment of advanced phases of breast and endometrial cancer].
    Author: Bernardo-Strada MR, Imparato E, Aspesi G, Pavesi L, Robustelli Della Cuna G.
    Journal: Minerva Med; 1980 Nov 10; 71(44):3241-6. PubMed ID: 7454090.
    Abstract:
    The results of a pilot study on the use of oral medroxyprogesterone acetate (Provera-Upjohn) at high dose in a series of 50 consecutive women with advanced breast (30 cases) and endometrial carcinoma (20 cases) are reported. Patients with progressive disease, non liable to further conventional treatments, received MPA (500 mg/day orally) for 90 days. The evaluation of results have shown only partial responses: in 9/30 (30%) of women with disseminated breast carcinoma (median duration of response 10 months, median survival 15 months), and in 6/20 (30%) of patients with advanced endometrial carcinoma (median duration of response 15 months, median survival not reached at 28 months of follow-up). Even if with a lower response rate, as compared to the results obtained with parenteral formulation, the oral MPA maintains its therapeutic effectiveness in these hormonodependent tumors: easy to handle during the long term treatments, oral MPA could be a useful alternative also for maintenance therapy. 30 patients with advanced breast carcinoma, and 20 patients with advanced endometrial carcinoma were treated with high doses, 500 mg./day, of MPA (medroxyprogesterone acetate) administered orally for 3 months. Evaluation of results showed responses in only 30% of women treated, independently of the type of carcinoma. In the breast carcinoma group median duration of response was 10 months, and median survival time 15 months; in the second group of patients median duration of response was 15 months, and median survival time was not yet reached after 28 months of follow-up. Negative side effects were gain of body weight and hypertension; oral MPA administration seems to have a lower response rate than parenteral administration; it is, however, easier to handle, and could present a useful alternative in maintenance therapy.
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