SUNG HEE LIM^1,#, HEE JIN CHO^1,2,3,#, KYOUNG-MEE KIM⁴, HO YEONG LIM¹, WON KI KANG¹, JEEYUN LEE¹, YOUNG SUK PARK¹, HEE CHEOL KIM^5,*, SEUNG TAE KIM^1,*

Oncology Research, Vol.31, No.6, pp. 855-866, 2023, DOI:10.32604/or.2023.030374

Abstract Background: Although bevacizumab is an important treatment for metastatic colorectal cancer (CRC), not all patients with CRC benefit from it; in unselected patient populations, only modest survival benefits have been reported. Methods: We evaluated clinical outcomes in 110 patients using comprehensive molecular characterization to identify biomarkers for a response to bevacizumab-containing treatment. The molecular analysis comprised whole-exome sequencing, ribonucleic acid sequencing, and a methylation array on patient tissues. Results: Genomic and molecular characterization was successfully conducted in 103 patients. Six of 103 CRC samples were hypermutated, and none of the non-hypermutant tumors were microsatellite unstable. Among those 103 patients, 89… More >

Tsung-Kun Chang^*†, Tzu-Chieh Yin^‡§, Wei-Chih Su^*†, Hsiang-Lin Tsai^*¶, Ching-Wen Huang^*¶, Yen-Cheng Chen^*, Ching-Chun Li^*, Po-Jung Chen^*, Cheng-Jen Ma^*§, Kuo-Hsiang Chuang^#, Tian-Lu Cheng^**, Jaw-Yuan Wang^{*†¶††‡‡§§}

Oncology Research, Vol.28, No.7-8, pp. 801-809, 2020, DOI:10.3727/096504021X16218531628569

Abstract Irinotecan, a topoisomerase inhibitor, is a common cytotoxic agent prescribed for metastatic colorectal cancer (mCRC) patients. Diarrhea is the most common adverse event (AE). The underlying mechanism of irinotecaninduced diarrhea is intestinal mucosal damage caused by SN-38 (active metabolite of irinotecan) hydrolyzed from SN-38G (inactive metabolite) by bacterial -glucuronidase ( G). According to an animal study, silymarin reduces the activity of bacterial G without impairing antitumor efficacy. We conducted a prospective openlabel pilot study to evaluate the effect of silymarin as supplementation in reducing toxicities of mCRC patients undergoing irinotecan-based chemotherapy. We enrolled and randomized 70 mCRC patients receiving first-line… More >

Hsiang-Lin Tsai^*†, Yen-Cheng Chen^*‡, Tzu-Chieh Yin^*§¶, Wei-Chih Su^*‡, Po-Jung Chen^*,Tsung-Kun Chang^*†, Ching-Chun Li^*, Ching-Wen Huang^*†, Jaw-Yuan Wang^{*†‡#**††‡‡}

Oncology Research, Vol.29, No.1, pp. 47-61, 2021, DOI:10.3727/096504022X16451187313084

Abstract Uridine diphosphate glucuronosyltransferase 1A1 (UGT1A1) polymorphism plays a crucial role in the increased susceptibility and toxicity of patients to irinotecan. This retrospective, observational study compared the clinical outcomes and adverse events (AEs) in RAS wild-type metastatic colorectal cancer (mCRC) patients treated with cetuximab or bevacizumab plus FOLFIRI with UGT1A1 genotyping and irinotecan dose escalation as the first-line therapy. In total, 173 patients with mCRC with RAS wild-type were enrolled. Among them, 98 patients were treated with cetuximab, whereas 75 patients were treated with bevacizumab. All patients received irinotecan dose escalation based on UGT1A1 genotyping. We compared the progression-free survival (PFS),… More >