Network meta‐analysis of adjuvant chemotherapy in biliary tract cancers: Setting the scene for new randomized evidence

Background and Aims The best adjuvant chemotherapy for resected biliary tract cancer (BTC) is under debate, with capecitabine supported by weak evidence. Aim of this network meta‐analysis is to estimate the efficacy of different phase II/III regimens, comparing monotherapies (gemcitabine or fluoropy...

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Veröffentlicht in:Liver international 2024-10, Vol.44 (10), p.2763-2772
Hauptverfasser: Salani, Francesca, Vetere, Guglielmo, Rossini, Daniele, Genovesi, Virginia, Carullo, Martina, Bartalini, Linda, Massa, Valentina, Bernardini, Laura, Caccese, Miriam, Cesario, Silvia, Graziani, Jessica, Grelli, Giada, Mangogna, Francesco, Vivaldi, Caterina, Masi, Gianluca, Fornaro, Lorenzo
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container_issue 10
container_start_page 2763
container_title Liver international
container_volume 44
creator Salani, Francesca
Vetere, Guglielmo
Rossini, Daniele
Genovesi, Virginia
Carullo, Martina
Bartalini, Linda
Massa, Valentina
Bernardini, Laura
Caccese, Miriam
Cesario, Silvia
Graziani, Jessica
Grelli, Giada
Mangogna, Francesco
Vivaldi, Caterina
Masi, Gianluca
Fornaro, Lorenzo
description Background and Aims The best adjuvant chemotherapy for resected biliary tract cancer (BTC) is under debate, with capecitabine supported by weak evidence. Aim of this network meta‐analysis is to estimate the efficacy of different phase II/III regimens, comparing monotherapies (gemcitabine or fluoropyrimidines) head‐to‐head, against observation and combination regimens. Methods A comprehensive literature search was conducted on PubMed and EMBASE for phase II/III randomized clinical trials (RCTs) available as of December 2023, reporting hazard ratios (HRs) of overall survival (OS) and event‐free survival (EFS). A frequentist framework employing a random‐effects model was applied; treatment rankings were outlined according to P‐score, based on direct and indirect evidence. Exploratory subgroup analyses for OS were also performed (primary site, resected margin status and nodal involvement). Results Six RCTs (1979 total patients) were identified. Fluoropyrimidine monotherapy showed significantly better OS (HR .84 [.72–.97]) and EFS (HR .79 [.69–.91]) than observation, as any monotherapy did (HR .84 [.74–.96]; HR .79 [.70–.89]). In the head‐to‐head comparison for OS, only S1 confirmed to be superior to observation alone (HR .69 [.49–.98]) while fluoropyrimidines achieved the best P score (.81), similarly to any monotherapy (0.92). Combinations failed to prove superior to monotherapies with respect both to OS and EFS. Subgroup analyses were inconclusive due to results' inconsistency and limited sample size. Conclusions Our work confirmed that adjuvant chemotherapy grants OS and EFS benefit for resected BTC patients. Fluoropyrimidines appeared the most effective option, confirming capecitabine as the preferred choice for the Western population. Key points The administration of chemotherapy after surgery in primary liver cancers arising from biliary cells is needed to reduce the risk of disease relapse. Different chemotherapy regimens are available. From our study, we confirmed that capecitabine is the most effective option compared to doublet regimens in terms of disease‐free patients' survival and overall survival.
doi_str_mv 10.1111/liv.16047
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Aim of this network meta‐analysis is to estimate the efficacy of different phase II/III regimens, comparing monotherapies (gemcitabine or fluoropyrimidines) head‐to‐head, against observation and combination regimens. Methods A comprehensive literature search was conducted on PubMed and EMBASE for phase II/III randomized clinical trials (RCTs) available as of December 2023, reporting hazard ratios (HRs) of overall survival (OS) and event‐free survival (EFS). A frequentist framework employing a random‐effects model was applied; treatment rankings were outlined according to P‐score, based on direct and indirect evidence. Exploratory subgroup analyses for OS were also performed (primary site, resected margin status and nodal involvement). Results Six RCTs (1979 total patients) were identified. Fluoropyrimidine monotherapy showed significantly better OS (HR .84 [.72–.97]) and EFS (HR .79 [.69–.91]) than observation, as any monotherapy did (HR .84 [.74–.96]; HR .79 [.70–.89]). In the head‐to‐head comparison for OS, only S1 confirmed to be superior to observation alone (HR .69 [.49–.98]) while fluoropyrimidines achieved the best P score (.81), similarly to any monotherapy (0.92). Combinations failed to prove superior to monotherapies with respect both to OS and EFS. Subgroup analyses were inconclusive due to results' inconsistency and limited sample size. Conclusions Our work confirmed that adjuvant chemotherapy grants OS and EFS benefit for resected BTC patients. Fluoropyrimidines appeared the most effective option, confirming capecitabine as the preferred choice for the Western population. Key points The administration of chemotherapy after surgery in primary liver cancers arising from biliary cells is needed to reduce the risk of disease relapse. Different chemotherapy regimens are available. From our study, we confirmed that capecitabine is the most effective option compared to doublet regimens in terms of disease‐free patients' survival and overall survival.</description><identifier>ISSN: 1478-3223</identifier><identifier>ISSN: 1478-3231</identifier><identifier>EISSN: 1478-3231</identifier><identifier>DOI: 10.1111/liv.16047</identifier><identifier>PMID: 39072988</identifier><language>eng</language><publisher>United States: Wiley Subscription Services, Inc</publisher><subject>adjuvant chemotherapy ; Biliary tract ; biliary tract cancers ; Biliary tract diseases ; Cancer ; Chemotherapy ; Clinical trials ; Effectiveness ; Gemcitabine ; Literature reviews ; Meta-analysis ; network meta‐analysis ; Patients ; prognosis ; Subgroups ; Survival</subject><ispartof>Liver international, 2024-10, Vol.44 (10), p.2763-2772</ispartof><rights>2024 The Author(s). published by John Wiley &amp; Sons Ltd.</rights><rights>2024 The Author(s). 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Aim of this network meta‐analysis is to estimate the efficacy of different phase II/III regimens, comparing monotherapies (gemcitabine or fluoropyrimidines) head‐to‐head, against observation and combination regimens. Methods A comprehensive literature search was conducted on PubMed and EMBASE for phase II/III randomized clinical trials (RCTs) available as of December 2023, reporting hazard ratios (HRs) of overall survival (OS) and event‐free survival (EFS). A frequentist framework employing a random‐effects model was applied; treatment rankings were outlined according to P‐score, based on direct and indirect evidence. Exploratory subgroup analyses for OS were also performed (primary site, resected margin status and nodal involvement). Results Six RCTs (1979 total patients) were identified. Fluoropyrimidine monotherapy showed significantly better OS (HR .84 [.72–.97]) and EFS (HR .79 [.69–.91]) than observation, as any monotherapy did (HR .84 [.74–.96]; HR .79 [.70–.89]). In the head‐to‐head comparison for OS, only S1 confirmed to be superior to observation alone (HR .69 [.49–.98]) while fluoropyrimidines achieved the best P score (.81), similarly to any monotherapy (0.92). Combinations failed to prove superior to monotherapies with respect both to OS and EFS. Subgroup analyses were inconclusive due to results' inconsistency and limited sample size. Conclusions Our work confirmed that adjuvant chemotherapy grants OS and EFS benefit for resected BTC patients. Fluoropyrimidines appeared the most effective option, confirming capecitabine as the preferred choice for the Western population. Key points The administration of chemotherapy after surgery in primary liver cancers arising from biliary cells is needed to reduce the risk of disease relapse. Different chemotherapy regimens are available. 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Aim of this network meta‐analysis is to estimate the efficacy of different phase II/III regimens, comparing monotherapies (gemcitabine or fluoropyrimidines) head‐to‐head, against observation and combination regimens. Methods A comprehensive literature search was conducted on PubMed and EMBASE for phase II/III randomized clinical trials (RCTs) available as of December 2023, reporting hazard ratios (HRs) of overall survival (OS) and event‐free survival (EFS). A frequentist framework employing a random‐effects model was applied; treatment rankings were outlined according to P‐score, based on direct and indirect evidence. Exploratory subgroup analyses for OS were also performed (primary site, resected margin status and nodal involvement). Results Six RCTs (1979 total patients) were identified. Fluoropyrimidine monotherapy showed significantly better OS (HR .84 [.72–.97]) and EFS (HR .79 [.69–.91]) than observation, as any monotherapy did (HR .84 [.74–.96]; HR .79 [.70–.89]). In the head‐to‐head comparison for OS, only S1 confirmed to be superior to observation alone (HR .69 [.49–.98]) while fluoropyrimidines achieved the best P score (.81), similarly to any monotherapy (0.92). Combinations failed to prove superior to monotherapies with respect both to OS and EFS. Subgroup analyses were inconclusive due to results' inconsistency and limited sample size. Conclusions Our work confirmed that adjuvant chemotherapy grants OS and EFS benefit for resected BTC patients. Fluoropyrimidines appeared the most effective option, confirming capecitabine as the preferred choice for the Western population. Key points The administration of chemotherapy after surgery in primary liver cancers arising from biliary cells is needed to reduce the risk of disease relapse. Different chemotherapy regimens are available. From our study, we confirmed that capecitabine is the most effective option compared to doublet regimens in terms of disease‐free patients' survival and overall survival.</abstract><cop>United States</cop><pub>Wiley Subscription Services, Inc</pub><pmid>39072988</pmid><doi>10.1111/liv.16047</doi><tpages>10</tpages><orcidid>https://orcid.org/0000-0001-6943-2897</orcidid><orcidid>https://orcid.org/0000-0001-7749-8634</orcidid><oa>free_for_read</oa></addata></record>
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subjects adjuvant chemotherapy
Biliary tract
biliary tract cancers
Biliary tract diseases
Cancer
Chemotherapy
Clinical trials
Effectiveness
Gemcitabine
Literature reviews
Meta-analysis
network meta‐analysis
Patients
prognosis
Subgroups
Survival
title Network meta‐analysis of adjuvant chemotherapy in biliary tract cancers: Setting the scene for new randomized evidence
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