Cancer Res Treat.  2018 Oct;50(4):1324-1330. 10.4143/crt.2017.526.

Multicenter Phase II Study of Oxaliplatin, Irinotecan, and S-1 as First-line Treatment for Patients with Recurrent or Metastatic Biliary Tract Cancer

• Yoo C
• Han B
• Kim HS
• Kim KP
• Kim D
• Jeong JH
• Lee JL
• Kim TW
• Kim JH
• Choi DR
• Ha HI
• Seo J
• Chang HM
• Ryoo BY
• Zang DY

• KMID: 2424804
• DOI: http://doi.org/10.4143/crt.2017.526

Abstract

PURPOSE
Although gemcitabine plus cisplatin has been established as the standard first-line chemotherapy for patients with advanced biliary tract cancer (BTC), overall prognosis remains poor. We investigated the efficacy of a novel triplet combination of oxaliplatin, irinotecan, and S-1 (OIS) for advanced BTC.
MATERIALS AND METHODS
Chemotherapy-naive patientswith histologically documented unresectable or metastatic BTC were eligible for this multicenter, single-arm phase II study. Patients received 65 mg/m2 oxaliplatin (day 1), 135 mg/m2 irinotecan (day 1), and 40 mg/m2 S-1 (twice a day, days 1-7) every 2 weeks. Primary endpoint was objective response rate. Targeted exome sequencing for biomarker analysis was performed using archival tissue.
RESULTS
In total, 32 patients were enrolled between October 2015 and June 2016. Median age was 64 years (range, 40 to 76 years), with 24 (75%) male patients; 97% patients had metastatic or recurrent disease. Response rate was 50%, and median progression-free survival and overall survival (OS) were 6.8 months (95% confidence interval [CI], 4.8 to 8.8) and 12.5 months (95% CI, 7.0 to 18.0), respectively. The most common grade 3-4 adverse events were neutropenia (32%), diarrhea (6%), and peripheral neuropathy (6%). TP53 and KRAS mutations were the most frequent genomic alterations (42% and 32%, respectively), and KRAS mutations showed a marginal relationship with worse OS (p=0.07).
CONCLUSION
OIS combination chemotherapy was feasible and associated with favorable efficacy outcomes as a first-line treatment in patients with advanced BTC. Randomized studies are needed to compare OIS with gemcitabine plus cisplatin.

Keyword

Biliary tract neoplasms; Cholangiocarcinoma; Chemotherapy; Irinotecan; Oxaliplatin; S-1

MeSH Terms

Biliary Tract Neoplasms*
Biliary Tract*
Cholangiocarcinoma
Cisplatin
Diarrhea
Disease-Free Survival
Drug Therapy
Drug Therapy, Combination
Exome
Humans
Male
Neutropenia
Peripheral Nervous System Diseases
Prognosis
Triplets
Cisplatin

Figure

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  Fig. 1. Waterfall plots of changes in target lesions.

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  Fig. 2. Survival outcomes with oxaliplatin, irinotecan, and S-1 combination treatment. CI, confidence interval.

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  Fig. 3. Progression-free survival according to the primary tumor site.

Reference

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