[Clinical application of chemosensitivity testing using radioactive precursors].

Abstract

In vitro drug testing using (3H) incorporation was utilized for specimens from 60 patients with advanced malignancies, mainly gastrointestinal cancers. Forty-six specimens had sufficient growth for drug testing. Forty-seven percent of stomach cancer specimens and 67% of colorectal cancer specimens demonstrated in vitro chemosensitivity. Among 9 chemotherapeutic agents tested, ara-C, 5-fluorouracil, and mitomycin C had higher percentages of positive sensitivity for stomach cancer, whereas actinomycin D, carboquone, and ACNU had a more pronounced effect on colorectal cancer. A comparison was made between the results of chemosensitivity tests and clinical response. In 46 drug assays, in vitro/in vivo drug responses were correlated in 78% with a true-positive predictive rate of 47% and a true-negative rate of 94%. This test appears to be a reliable indicator for clinical response to the same chemotherapeutic agents in human malignant disease.

• Authors: H Ichihashi
• Journal: Gan to kagaku ryoho. Cancer & chemotherapy (Gan To Kagaku Ryoho) Vol. 13 Issue 4 Pt 2 Pg. 1156-62 (Apr 1986) ISSN: 0385-0684 [Print] Japan
• PMID: 3729437 (Publication Type: English Abstract, Journal Article)

Chemical References

• Antineoplastic Agents
• Tritium
• Thymidine
• Uridine

Topics

• Adult
• Aged
• Antineoplastic Agents (pharmacology)
• Drug Evaluation, Preclinical (methods)
• Humans
• Middle Aged
• Neoplasms (drug therapy, metabolism)
• Thymidine (metabolism)
• Tritium
• Uridine (metabolism)