Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1991-2-20
pubmed:abstractText
Because leucovorin increases the antitumor activity of 5-fluorouracil (5-FU) in multiple tumor model systems, we performed a clinical trial to evaluate this combination in women who had received one or no prior chemotherapy regimens for metastatic breast cancer. Thirty-six women with measurable metastatic disease were treated with five consecutive days of i.v. leucovorin, 500 mg/m2/day infused over 30 min, followed 1 h later by i.v. bolus 5-FU, 375 mg/m2/day. Repeat cycles were planned at 4-week intervals. Tumor regression occurred in 10 of 36 patients (28%; 95% confidence interval, 14-45%) with a median time to disease progression (TTP) of 8.7 months (range 3.2-16.8 months) in the responding patients. The median TTP and survival for all patients were 3.0 and 12.4 months, respectively. Among 30 patients who had received prior 5-FU, tumor regressions were seen in seven (23%; 95% confidence interval 10-42%). The major dose-limiting toxicity in this study was mucositis, affecting 89% of the patients. Other toxicities were tolerable in the majority of patients. Although the role of leucovorin in breast cancer clinical practice remains undefined, the data from this trial support the hypothesis that leucovorin enhances the cytotoxic activity of 5-FU against human breast cancer.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0277-3732
pubmed:author
pubmed:issnType
Print
pubmed:volume
14
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
30-2
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1991
pubmed:articleTitle
5-Fluorouracil plus leucovorin in women with metastatic breast cancer. A phase II study.
pubmed:affiliation
Division of Medical Oncology, Mayo Clinic, Rochester, MN 55905.
pubmed:publicationType
Journal Article, Clinical Trial, Research Support, U.S. Gov't, P.H.S.