Objective:
To report a metastatic colorectal cancer patient with hyperbilirubinemia treated with a combination of bevacizumab and FOLFIRI (5-fluorouracil, leucovorin, and irinotecan) using uridine diphosphate glucuronosyl transferase (UGT1A1) genotyping.
Clinical presentation and intervention:
A 46-year-old male was diagnosed with rectosigmoid colon cancer with liver metastases and hyperbilirubinemia presenting with severe jaundice. UGT1A1 genotyping was used before therapy to ascertain whether genotype-adjusted dosages of irinotecan plus bevacizumab could alleviate the toxicity. Then, the patient was treated with FOLFIRI.
Conclusion:
The FOLFIRI regimen was successfully used in this patient without concerns regarding toxicity.