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In Vitro Chemosensitivity Test for Gastric Cancer Specimens Predicts Effectiveness of Oxaliplatin and 5-Fluorouracil.
Anticancer Research 2017 November
AIM: Cisplatin plus 5-fluorouracil (5-FU) or S-1 is a standard therapy for gastric cancer (GC). However, cisplatin is emetic and potentially nephrotoxic. Oxaliplatin may be less toxic, but few basic data are available for this setting. Here, we evaluated oxaliplatin for GC, by testing surgical specimens.
MATERIALS AND METHODS: We evaluated effects of oxaliplatin and 5-FU, alone and in combination, on surgical specimens from 11 patients with GC, using collagen gel droplet embedded culture drug tests.
RESULTS: Oxaliplatin was less efficacious than 5-FU, and its synergistic effect was less in tumors highly sensitive to 5-FU than in those with low sensitivity. Tumor differentiation and drug sensitivity were not correlated.
CONCLUSION: Although oxaliplatin monotherapy had little effect on GC, we saw a limited synergistic effect of oxaliplatin with 5-FU in 5-FU-sensitive patients. Collagen gel droplet embedded culture drug tests may predict this synergistic effect, and help select candidates for this or other regimens.
MATERIALS AND METHODS: We evaluated effects of oxaliplatin and 5-FU, alone and in combination, on surgical specimens from 11 patients with GC, using collagen gel droplet embedded culture drug tests.
RESULTS: Oxaliplatin was less efficacious than 5-FU, and its synergistic effect was less in tumors highly sensitive to 5-FU than in those with low sensitivity. Tumor differentiation and drug sensitivity were not correlated.
CONCLUSION: Although oxaliplatin monotherapy had little effect on GC, we saw a limited synergistic effect of oxaliplatin with 5-FU in 5-FU-sensitive patients. Collagen gel droplet embedded culture drug tests may predict this synergistic effect, and help select candidates for this or other regimens.
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