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Biomedical subjects

S G Taylor

Publications and source records attributed to S G Taylor.

At least 145 records · Page 8Linked to original sources

Phase II trial of a combination of cyclosphamide, vincristine, and methotrexate in advanced colorectal carcinoma.

Twenty patients with advanced colon cancer were treated with a combination of low-dose weekly cyclophosphamide, vincristine, and methotrexate (COM) after demonstrated progression of disease with 5-fluorouracil (5-FU). Four patients (20%) had partial responses with a median survival of 15 months, six (30%) had disease stabilization for 3--16 months (median survival, 8 months), and ten progressed with a median survival of 5.5 months. All four partial responses and five of six stabilizations occurred in patients with a performance status of 0 or 1. COM appeared well-tolerated and at least as effective as alternative secondary chemotherapy following 5-FU failure.

Adult↗

Combination chemotherapy for metastatic breast carcinoma. Prospective comparison of multiple drug therapy with L-phenylalanine mustard.

A prospective randomized clinical trial was undertaken in 184 patients with metastatic breast carcinoma to compare single drug chemotherapy with L-phenylalanine mustard (L-PAM) and intermittent combination chemotherapy with cyclophosphamide, methotrexate, and 5-fluourouracil (CMF). All patients had not been previously treated with cytotoxic drugs and all had objectively measurable visceral of soft tissue disease. Of the 93 patients who received CMF, 49 (53%) achieved a complete (14 patients) or partial (35 patients) regression of measurable tumor, for a median duration of 25 weeks. Eighteen of the 91 patients (20%) treated with L-PAM responded, for a median duration of 13 weeks. The toxicity was primarily hematologic, and greater in the CMF group, which also received more cycles of therapy because of the higher rate and duration of response. The overall survival of CMF-treated patients was superior to that of the single drug group. The differences were even greater when the patients were subclassified according to the presence of liver involvement or nonambulatory performance status. The superior antitumor effect of CMF over L-PAM suggests that it may be a more effective drug regimen to be used as an adjuvant to primary therapy.

Adult↗

Treatment of grade III and IV astrocytoma with dimethyl triazeno imidazole carboxamide (DTIC, NSC-45388) alone and in combination with CCNU (NSC-79037) or methyl CCNU (MeCCNU, NSC-95441).

The effectiveness of DTIC in the treatment of Grade III and IV astrocytomas was analyzed in two phases. In the first phase, 14 patients (Group A) with progressive neurologic dysfunction following primary treatment were treated with DTIC alone (8 patients) or in combination with CCNU or methyl CCNU (6 patients) and evaluated for change in neurologic status. Five of the 8 treated with DTIC responded symptomatically for a median duration of 18 weeks, and 3 of 6 treated with the combination of drugs responded for a median duration of 12 weeks. In the second phase, 15 patients (Group B) were treated within 4 weeks of surgical resection with radiation therapy and adjuvant chemotherapy with DTIC and/or MeCCNU. These patients were followed for survival and compared to a historical control group of 15 patients (Group C) treated with surgery and radiation only. The drug-treated group had a median survival of 55 weeks, compared to 35 weeks for the control group. Hematologic toxicity was life threatening in 2 of 14 patients treated with combination drugs, but mild with DTIC alone. DTIC appears to be active against malignant astrocytomas. Survival may be lengthened by combining chemotherapy with surgery and radiation therapy.

Adult↗

Clinical studies of 5-fluorouracil + premarin in the treatment of breast cancer.

Sixty patients with metastatic or primary inoperable breast cancer not suitable for hormone alteration therapy were blindly randomized between weekly 5-fluorouracil, intravenously, and daily physiologic doses of conjugated estrogens by mouth against weekly 5-fluorouracil, intravenously, and placebo. There was no difference in the survival or the effect on the tumor in the two groups. Numerous factors were analyzed as to their effect on the course of the disease. The number of organ sites of tumor involvement, age of the host, and previous treatment for the disseminated disease were not shown to influence the survival or the results of therapy of either group. However, the duration of the clinical cancer-free period from primary treatment to recurrence, the sites of organ involvement, and the performance status of the patients at the time of entry into the study significantly did influence the survival. There is no evidence in this study that physiologic doses of conjugated estrogens deleteriously influenced the course of the disease.

Adult↗