Korean J Intern Med.
1997 Jun;12(2):155-162.
A randomized trial comparing cisplatin plus 5-fluorouracil with or without
levamisole in operable gastric cancer
- Affiliations
-
- 1Section of Hematology-Oncology, College of Medicine, University of Ulsan, Seoul,
Korea.
Abstract
OBJECTIVES
To determine the effectiveness and toxicity when levamisole was
added to the adjuvant combination chemotherapy in patients with operable gastric
cancer. METHODS: After en bloc resection of gastric cancer without gross or
microscopic evidence of residual disease from April 1991 to December 1992, 100
patients were randomized to 6 months of 5-fluorouracil 1,000 mg/m2/day
administered as continuous infusion for 5 days, cisplatin 60 mg/m2/day as
intravenous infusion for 1 day with or without levamisole (50 mg every eight
hours P.O for a period of three days every 2 weeks for 6 months). This
chemotherapy treatment was begun within 2 to 4 weeks after the surgery. The
chemotherapy consisted of discrete 5-day courses administered at 4-weeks
intervals. All 100 patients are assessable. RESULTS: The fifty patients were
assigned to each treatment group. There was no statistical difference and no
bias in the distribution of characteristics of the 100 evaluable patients
between the two groups. A total of 274 courses of treatment were given in the
levamisole group and 260 courses of treatment in non-levamisole group. Eleven
patients in each group did not finish planned 6 courses of treatment mainly due
to non-compliance. At median follow up of 39 months, 32 patients relapsed 19 in
the levamisole group and 13 in the non-levamisole group (p = 0.284). Twenty five
patients died of relapsed diseases, 15 in the levamisole group and 10 in the
non-levamisole group. The levamisole group tended to show more risk of overall
death rate and recurrence than the non-levamisole group. However, this result
was not statistically significant at 3 years. The treatment was well tolerated
in both treatment groups. The grade 2-3 toxicities were nausea/ vomiting
(levamisole, non-levamisole group; 31.7%, 29.3% of treatment courses
respectively), diarrhea (7.6%, 8.4%), mucositis (11.6%, 12.3%), and leukopenia
(9.8%, 9.6%). CONCLUSION: Levamisole had negative effects on disease-free
survival and overall survival when added to adjuvant combination chemotherapy of
cisplatin and 5-fluorouracil in patients with operable gastric cancer. Both
treatment arms were generally well tolerated and the toxicity profile was
similar with or without levamisole.