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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
1
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pubmed:dateCreated |
1997-2-27
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pubmed:abstractText |
6-Thioguanine (6-TG) is a purine analog that has marked variability in plasma concentration after oral administration. Following the development of a multiple-day i.v. regimen, we performed a phase II trial of this agent as first-line chemotherapy in women with metastatic breast cancer. Forty-one patients with measurable (31 patients) or evaluable (10 patients) disease were entered into this trial. 6-TG was administered i.v. over a 10 min period daily for 5 consecutive days, with a planned cycle length of 35 days. The daily dosage level was 55 mg/m2 in the first 15 patients, but this was increased to 65 mg/m2 in the remaining patients due to inadequate myelosuppression at the lower dose. Six patients, all with measurable disease, achieved a complete response (CR) (two patients) or a partial response (PR) (four patients). Three responses occurred at the 55 mg/m2 level and three at the 65 mg/m2 level. The 95% confidence interval (CI) for the true response rate among patients with measurable disease was 6-39%. The median time to progression was 140 days and median survival time was 460 days. The regimen was well tolerated. We conclude that 6-TG, as given in this study, has limited activity as first-line chemotherapy for women with metastatic breast cancer.
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pubmed:grant | |
pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Feb
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pubmed:issn |
0277-3732
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
20
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
69-72
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pubmed:dateRevised |
2007-11-14
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pubmed:meshHeading |
pubmed-meshheading:9020292-Adult,
pubmed-meshheading:9020292-Aged,
pubmed-meshheading:9020292-Antimetabolites, Antineoplastic,
pubmed-meshheading:9020292-Breast Neoplasms,
pubmed-meshheading:9020292-Drug Administration Schedule,
pubmed-meshheading:9020292-Female,
pubmed-meshheading:9020292-Humans,
pubmed-meshheading:9020292-Middle Aged,
pubmed-meshheading:9020292-Neoplasm Metastasis,
pubmed-meshheading:9020292-Remission Induction,
pubmed-meshheading:9020292-Survival Analysis,
pubmed-meshheading:9020292-Thioguanine
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pubmed:year |
1997
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pubmed:articleTitle |
Evaluation of intravenous 6-thioguanine as first-line chemotherapy in women with metastatic breast cancer.
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pubmed:affiliation |
Mayo Clinic and Mayo Foundation, Rochester, Minnesota 55905, USA.
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pubmed:publicationType |
Journal Article,
Clinical Trial,
Research Support, U.S. Gov't, P.H.S.,
Clinical Trial, Phase II
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