Phase II study of fixed dose-rate gemcitabine plus S-1 as a second-line treatment for advanced biliary tract cancer

Clinical outcomes for previously treated patients with advanced biliary tract cancer: a meta-analysis

Aim: A systematic review and meta-analysis were performed to evaluate the efficacy of treatments for previously treated advanced biliary tract cancer (BTC) patients. Materials & methods: Databases were searched for studies evaluating treatments for advanced (unresectable and/or metastatic) BTC patients who progressed on prior therapy. Pooled estimates of objective response rate (ORR), median overall survival (OS) and median progression-free survival (PFS) were calculated using random effects meta-analysis. Results: Across 31 studies evaluating chemotherapy or targeted treatment regimens in an unselected advanced BTC patient population, pooled ORR was 6.9%, median OS was 6.6 months and median PFS was 3.2 months. Conclusion: The efficacy of conventional treatments for previously treated advanced BTC patients is poor and could be improved by novel therapies.

Second-line treatments in advanced biliary tract cancer: systematic literature review of efficacy, effectiveness and safety

Background: A systematic review was conducted to understand clinical, economic and health-related quality-of-life outcomes in second-line biliary tract cancer. Materials & methods: The review followed established recommendations. The feasibility of network meta-analysis revealed limited networks, thus synthesis was limited to a summary of reported ranges, percentiles and medians. Results: The review included 62 trials and observational studies highly variable with respect to key baseline characteristics. Commonly evaluated second-line treatments included fluoropyrimidine-, gemcitabine- and S-1-based regimens. Across active treatment arms, median overall survival ranged from 3.5 to 15.0 months (median: 6.9), median progression-free survival from 1.4 to 6.5 months (median: 2.9) and objective response from 0 to 36.4%. Outcomes were similar between study types, with a few notable outliers. Treatment-related/-emergent adverse events were infrequently reported; no studies reported economic or health-related quality-of-life outcomes. Conclusions: Biliary tract cancer is a difficult-to-treat disease with poor prognosis. Despite evolving treatment landscapes, more recent studies did not show clinical outcome improvement, highlighting an unmet need among advanced/metastatic patients.

Cholangiocarcinoma: State of the Art

BACKGROUND

Cholangiocarcinoma (CCA) is the second most frequent primary liver tumor and defined as the heterogeneous group of tumors derived from cells in the biliary tree.

METHODS AND RESULTS

Based on the anatomical locations (intrahepatic, perihilar, and distal), there are various approaches to the diagnosis and treatment of CCA. Imaging modalities, staging classifications, understandings around natural behavior of CCA, and therapeutic strategies have had remarkable progress in recent years.

CONCLUSIONS

This article reviews and discusses the epidemiology, clinical presentation, diagnosis, and treatment modalities of CCA; determines the appropriate inclusion and exclusion criteria for liver transplantation (LT); and defines the risk of disease progression for patients in the waiting list of LT.

Second-line chemotherapy in advanced biliary cancers: A retrospective, multicenter analysis of outcomes

BACKGROUND

Although gemcitabine plus platinum chemotherapy is the established first-line regimen for advanced biliary cancer (ABC), there is no standard second-line therapy. This study evaluated current practice and outcomes for second-line chemotherapy in patients with ABC across 3 US academic medical centers.

METHODS

Institutional registries were reviewed to identify patients who had received second-line chemotherapy for ABC from April 2010 to March 2015 along with their demographics, diagnoses and staging, treatment histories, and clinical outcomes. Overall survival from the initiation of second-line chemotherapy (OS2) was estimated with Kaplan-Meier methods.

RESULTS

This study identified 198 patients with cholangiocarcinoma (intrahepatic [61.1%] or extrahepatic [14.1%]) or gallbladder carcinoma (24.8%); 52% received at least 3 lines of systemic chemotherapy. The median OS2 was 11 months (95% confidence interval [CI], 8.8-13.1 months). The median OS2 for patients with intrahepatic cholangiocarcinoma was 13.4 months (95% CI, 10.7-17.8 months), which was longer than that for patients with extrahepatic cholangiocarcinoma (6.8 months; 95% CI, 5-10.6 months) or gallbladder carcinoma (9.4 months; 95% CI, 7.2-12.3 months; P = .018). The median time to second-line treatment failure was 2.2 months (95% CI, 1.8-2.7 months), and it was similar across tumor locations (P = .60).

CONCLUSIONS

In this large cohort of patients with ABC treated across 3 academic medical centers after the failure of first-line chemotherapy, the time to treatment failure on standard therapies was short, although the median OS2 was longer than has been reported previously, and more than half of the patients received additional lines of treatment. This multicenter collaboration represents the largest cohort studied to date of second-line chemotherapy for ABC and provides a contemporary benchmark for future clinical trials.

Second-line chemotherapy in patients with advanced or recurrent biliary tract cancer: a single center, retrospective analysis of 294 cases

Purpose The survival benefit of first-line chemotherapy (CT1) for biliary tract cancer (BTC) is now established but the role of second-line chemotherapy (CT2) has not been fully elucidated yet. Methods Consecutive advanced BTC patients receiving CT1 between 2000 and 2016 were retrospectively studied. We investigated the safety and efficacy of CT2, prognostic factors for residual survival after CT1, and explored subgroups who would benefit from CT2. Results Among 294 patients receiving CT1 for advanced BTC, CT2 was given in 139 patients (47%). CT2 provided a response rate of 4%, a disease control rate of 52%, a median progression-free survival of 2.8 and overall survival of 7.7 months, respectively. CT2 was associated with longer residual survival after CT1 (hazard ratio [HR] 0.61, p < 0.01), as well as PS of 0-1 (HR 0.53, p < 0.01), best response to CT1 of PD (HR 1.46, p = 0.01), and CEA ≥5.0 ng/mL (HR 1.69, p < 0.01). The effects of CT2 were homogeneous across almost all subgroups but were more prominent in patients with age ≥ 70 years (HR 0.32, p for interaction =0.02), CA19-9 ≥ 200 IU/mL (HR 0.41, p for interaction = 0.08) and CEA ≥5.0 ng/mL (HR 0.41, p for interaction = 0.06). Conclusions The introduction rate of CT2 was 47%. Although the efficacy of CT2 was modest in terms of tumor response, it was associated with better survival. Further investigations are necessary both to develop more effective regimens and to select patients who will benefit from CT2.

A randomised phase II study of second-line XELIRI regimen versus irinotecan monotherapy in advanced biliary tract cancer patients progressed on gemcitabine and cisplatin

Background

The majority of advanced biliary tract cancer (ABTC) patients will progress after gemcitabine and cisplatin (GP) doublet therapy, while the standard second-line regimen has not been established. We conducted this study to assess the efficacy and safety of second-line irinotecan and capecitabine (XELIRI) regimen vs. irinotecan monotherapy in ABTC patients progressed on GP.

Methods

Sixty-four GP refractory ABTC patients were randomised to either irinotecan 180 mg/m² on day 1 plus capecitabine 1000 mg/m² twice daily on days 1–10 of a 14-day cycle (XELIRI-arm) or single-agent irinotecan 180 mg/m² on day 1 of a 14-day cycle (IRI-arm). Treatments were repeated until disease progression or unacceptable toxicity occurred.

Results

A total of 60 patients were included in the analysis. For XELIRI and IRI-arms, respectively, the median PFS was 3.7 vs. 2.4 months, 9-month survival rate 60.9% vs. 32.0%, median OS 10.1 vs. 7.3 months, and disease control rate 63.3% vs. 50.0%. The most common grade 3 or 4 toxicities were leucopaenia and neutropaenia.

Conclusions

This randomised, phase II study of irinotecan-containing regimens in good PS second-line ABTC patients showed a clear benefit of XELIRI regimen over irinotecan monotherapy in prolonging PFS, with acceptable toxicity.