The efficacy of 5-fluorouracil in human colorectal cancer is not enhanced by thymidylate synthetase inhibition with CB3717 (N10-propargyl-5,8 dideazafolic acid)
1988

Combining 5-Fluorouracil and CB3717 for Colorectal Cancer

Sample size: 12 publication Evidence: low

Author Information

Author(s): B.M.J. Cantwell, A.L. Harris

Primary Institution: University Department of Clinical Oncology, Regional Radiotherapy Centre, Newcastle General Hospital

Hypothesis

Combining 5-fluorouracil with CB3717 will enhance treatment efficacy in colorectal adenocarcinoma.

Conclusion

The combination of 5-fluorouracil and CB3717 did not show any objective responses in patients with colorectal cancer.

Supporting Evidence

  • No objective responses were observed in the study.
  • Two patients had some improvement in symptoms but no significant tumor regression.
  • Eight patients experienced moderate to severe malaise after treatment.
  • Ten patients had mild nausea after treatment.
  • Myelosuppression was not detected in any patient.

Takeaway

Doctors tried a new medicine with a common cancer drug to help patients, but it didn't work as they hoped.

Methodology

Twelve chemotherapy-naive patients were treated with CB3717 and 5-fluorouracil, with assessments of response and side effects.

Limitations

The study had a small sample size and no objective responses were observed.

Participant Demographics

Median age was 55 years, with a range of 35-70 years; most had liver metastases.

Statistical Information

Confidence Interval

0%-26.4%

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