Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UMLS:C0038362 (stomatitis)
 8,852 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Edatrexate (10-ethyl-10-deaza-aminopterin; CGP 30 694) is a methotrexate (MTX) analogue that shows promise against non-small-cell lung cancer (NSCLC) and other tumors. Since edatrexate's mechanism of action is the same as that of MTX, we used leucovorin in an attempt to alleviate its dose-limiting toxicity, stomatitis. In four patients with NSCLC who had experienced significant stomatitis after treatment with edatrexate, cyclophosphamide, and cisplatin, we observed a remarkable reduction in stomatitis following the administration of low-dose leucovorin. On the basis of the results obtained in these individuals, we treated 15 additional patients with this three-drug regimen plus leucovorin rescue. These subjects could tolerate the treatment with lesser degrees of stomatitis and received higher edatrexate doses in subsequent courses as compared with the patients who previously received this regimen without leucovorin rescue. This approach is expected to improve the therapeutic indices of edatrexate and edatrexate-containing chemotherapy regimens by modifying the dose-limiting toxicity of this antineoplastic agent.
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PMID:Alleviation by leucovorin of the dose-limiting toxicity of edatrexate: potential for improved therapeutic efficacy. 164 5

Recurrent squamous cell carcinoma of the head and neck is poorly responsive to chemotherapy in most patients; therefore, the development of new approaches is essential. Edatrexate is a new antifolate with improved preclinical antitumor activity when compared to methotrexate. The purpose of this study was to define the feasibility and efficacy of combining edatrexate with another active single agent, carboplatin in chemotherapy-naive recurrent disease. Carboplatin was given as an outpatient on day 1 at a dosage based on the formula: Dose (mg/m2) = (0.091) (creatinine clearance) (body surface area) (desired percentage change in platelet count) + 86. Edatrexate (80 mg/m2) was given on days 1, 8, and 15 of a 21 day cycle. Calcium leucovorin 15 mg was given orally every 6 h for 4 doses after edatrexate. Of the 26 patients entered on the study, 1 was invaluable for toxicity or response and 3 patients were evaluable for toxicity only. Grade 3 or 4 neutropenia occurred in 2 patients each, and grade 3 or 4 thrombocytopenia occurred in 2 and 4 patients, respectively. Grade 3 stomatitis occurred in only two patients. Overall, major responses occurred in 2 of 22 evaluable patients (9%). The combination of carboplatin and edatrexate was not superior to the results expected with either agent alone.
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PMID:Phase II study of carboplatin and edatrexate (10-EdAM) with leucovorin rescue for patients with recurrent squamous cell carcinoma of the head and neck. 777 35

Twenty-two patients with recurrent ovarian cancer were entered into a Phase II trial of edatrexate at a dose of 80 mg/m2 i.v. weekly for five consecutive weeks. One patient received an inadequate trial, and six did not complete one cycle due to adverse effects. There were 21 patients evaluable for toxicity and 15 for response. There were no objective responses, 10/15 (67%) had stable disease, 5/15 (33%) increasing disease. Toxicity was predominantly stomatitis and hematologic. Two patients developed skin rashes, and one experienced pulmonary toxicity felt to be related to the drug. Edatrexate administered in this dose and schedule has no demonstrated activity, but moderately severe toxicity in patients with previously treated advanced ovarian cancer.
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PMID:A phase II trial of edatrexate in previously treated ovarian cancer. A Gynecologic Oncology Group study. 790 Jul 9

A Phase II trial of edatrexate in patients with recurrent cervical carcinoma was conducted by the Gynecologic Oncology Group (GOG). Twenty patients were treated with edatrexate at a dose of 80 mg/m2 i.v. weekly for 5 consecutive weeks per cycle. Four patients received an inadequate trial and were inevaluable for response. Among the 16 patients evaluable for response, there were no objective responses: 50% had stable disease, 50% had progressive disease. All 20 patients were evaluable for toxicity, predominantly stomatitis and bone marrow suppression were substantial. Grades 3-4 bone marrow toxicity were observed in eight of 20 (40%) patients, and there were two deaths due to neutropenic sepsis. Fanconi's syndrome, possibly treatment related, was seen in two patients. Edatrexate administered in this dose and schedule has no demonstrated activity and has severe toxicity in patients with previously-treated advanced cervical cancer.
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PMID:A phase II trial of edatrexate in previously treated squamous cell cervical cancer: a Gynecologic Oncology Group study. 902 Feb 94

We performed a Phase II trial of edatrexate in 44 chemotherapy-naive patients with advanced renal cell carcinoma. Prior therapy with one biological-response modifier was permitted. Most patients had multiple sites of metastatic disease and were considered to have a poor prognosis using Eastern Cooperative Oncology Group criteria. Edatrexate was administered intravenously at a dose of 80 mg/m2 weekly with 5 weeks of therapy considered one cycle. Oral cryotherapy using ice chips was administered before each edatrexate dose. Thirty-seven patients were eligible and evaluable for toxicity and response. Two patients obtained a partial response, for an overall response rate of 5.4% (95% confidence interval of 0.6%, 18.2%); one patient remained in remission at 26+ months. Three treatment-related deaths occurred. Toxicity was severe, with stomatitis, myelosuppression, and other gastrointestinal side effects most prominent. Edatrexate in this dose and schedule has minimal activity in advanced renal cell carcinoma and is toxic.
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PMID:A phase II trial of edatrexate in patients with advanced renal cell carcinoma. An Eastern Cooperative Oncology Group study. 916 47

Motivated by the observation of preclinical synergy, a Phase I dose escalation study of edatrexate in combination with a 3-h paclitaxel infusion was performed in patients with advanced breast cancer to determine the maximum tolerated dose (MTD) of edatrexate and the toxicities associated with this combination and to report preliminary observations of efficacy with this novel combination. Thirty-six patients were enrolled in this Phase I trial. Thirty-five eligible patients were treated every 21 days in cohorts of at least three patients and were assessable for toxicity. One patient was ineligible due to hyperbilirubinemia. Stepwise dose escalations of edatrexate were administered until grade >3 nonhematological dose-limiting toxicities were reported. The initial dose level of edatrexate was 180 mg/m2; subsequent cohorts were treated with escalating doses of edatrexate (210, 240, 270, 300, 350, and 400 mg/m2). Edatrexate was administered by i.v. infusion over 1 h. Paclitaxel was administered 24 h later at a fixed dose of 175 mg/m2 as a 3-h infusion with standard dexamethasone, diphenhydramine, and cimetidine premedication. The MTD of edatrexate was reached at the 350 mg/m2 level in this study. Grade 3 diarrhea was seen in one patient at the 300 and 400 mg/m2 dose levels, requiring dose reductions. Two patients experienced grade 4 stomatitis at the 400 mg/m2 dose level and also required dose reduction, establishing the MTD as 350 mg/m2. Grade 3 nausea and vomiting were noted in two of three patients at the highest dose level. Of 35 patients, 4 patients reported grade 3 myalgias and 1 patient reported grade 3 neurosensory complaints, which were seen mostly at the 350 and 400 mg/m2 dose levels; however, 1 patient reported grade 3 myalgias at 180 mg/m2. No cumulative neurotoxicity was observed, and no patient experienced an allergic reaction to paclitaxel. In 23 patients with bidimensionally measurable disease, there were four complete (17%) and seven partial responses, with an overall response rate of 48% (95% confidence interval, 27-69%). All of the responses were seen in patients who had not received prior chemotherapy for stage IV disease. The median duration of response was not assessable because many responding patients went on to receive high-dose chemotherapy treatment with stem cell support. The combination of edatrexate and paclitaxel for treatment of metastatic breast cancer is a feasible and safe regimen. The MTD of edatrexate was 350 mg/m2 when combined with a 3-h infusion of paclitaxel (175 mg/m2) given 24 h later. Activity was noted even among patients who had relapsed shortly after receiving methotrexate- and/or doxorubicin-containing adjuvant regimens. Additional studies evaluating the sequences and dosing schema for this combination are warranted to improve the response proportion and define the duration of the response.
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PMID:Phase I study of escalating doses of edatrexate in combination with paclitaxel in patients with metastatic breast cancer. 1003 75

Up to 30% of patients with advanced germ cell tumors will fail induction chemotherapy or will relapse. New agents with activity in this still potentially curable subgroup of patients are needed. Edatrexate (10-ethyl, 10-deaza-aminopterin) is a methotrexate analogue that has preclinical and clinical activity in breast, lung, and head and neck cancers, as well as in non-Hodgkin's lymphomas. A phase II trial of edatrexate in relapsed or refractory malignant germ cell tumors was conducted by the Southwest Oncology Group (SWOG). Twenty-five patients were enrolled in the trial. Edatrexate was administered intravenously at a dose of 80 mg/m2 weekly for four weeks followed by a one-week rest period. The treatment course was repeated every five weeks. Among the 23 patients evaluable for response, there were no objective responses with all patients developing progressive disease. Thirteen patients (56%) developed Grade 3-4 toxicities, predominantly stomatitis and malaise/fatigue/lethargy. One patient developed Grade 4 anemia while another developed grade 4 anemia and thrombocytopenia. No patients discontinued treatment due to toxicity nor were there any toxic deaths. Edatrexate administered in this dose and schedule has no antitumor activity and has substantial toxicity in patients with relapsed or refractory germ cell tumors.
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PMID:Phase II trial of edatrexate in relapsed or refractory germ cell tumors: a Southwest Oncology Group study (SWOG 9124). 1042 70