Nineteen-year, real-world experience of first-line combination chemotherapy in patients with metastatic colorectal cancer: a propensity score analysis from southern Thailand

Objective Combination fluoropyrimidine-based chemotherapy is the standard first-line treatment for metastatic colorectal cancer (CRC). We performed a propensity score (PS)-based analysis to report our real-world experience with long-term follow-up of this regimen for metastatic CRC. Methods In this...

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Main Authors: Jirapat Wonglhow, Chirawadee Sathitruangsak, Arunee Dechaphunkul, Patrapim Sunpaweravong
Format: Article
Language:English
Published: SAGE Publishing 2023-08-01
Series:Journal of International Medical Research
Online Access:https://doi.org/10.1177/03000605231193583
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author Jirapat Wonglhow
Chirawadee Sathitruangsak
Arunee Dechaphunkul
Patrapim Sunpaweravong
author_facet Jirapat Wonglhow
Chirawadee Sathitruangsak
Arunee Dechaphunkul
Patrapim Sunpaweravong
author_sort Jirapat Wonglhow
collection DOAJ
description Objective Combination fluoropyrimidine-based chemotherapy is the standard first-line treatment for metastatic colorectal cancer (CRC). We performed a propensity score (PS)-based analysis to report our real-world experience with long-term follow-up of this regimen for metastatic CRC. Methods In this retrospective study, 170 patients with newly diagnosed metastatic CRC treated with first-line combination chemotherapy between January 2003 and March 2021 were identified. Cox proportional hazards regression analysis and PS-based approaches with the logistic regression model were adopted, and the results were compared. Results The hazard ratio for overall survival (OS) in the oxaliplatin- and irinotecan-based groups was 0.79 (95% confidence interval = 0.56–1.11), and the median OS times in these groups were 16.8 and 13.0 months, respectively. The median time to progression (TTP) for these regimens were 9.0 and 8.9 months, respectively. The objective response rates for the oxaliplatin- and irinotecan-based groups were 42.7% and 34.6%, respectively. OS and TTP did not differ between these regimens in all PS matching models. Conclusions First-line treatment using fluoropyrimidine-based chemotherapy regimens in combination with oxaliplatin or irinotecan in patients with metastatic CRC provided comparable efficacy and tolerable toxicity profiles in a real-world setting with long-term follow-up.
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spelling doaj.art-28e4489bc7e544e1af98819fe97f028b2023-10-25T07:03:25ZengSAGE PublishingJournal of International Medical Research1473-23002023-08-015110.1177/03000605231193583Nineteen-year, real-world experience of first-line combination chemotherapy in patients with metastatic colorectal cancer: a propensity score analysis from southern ThailandJirapat WonglhowChirawadee SathitruangsakArunee DechaphunkulPatrapim SunpaweravongObjective Combination fluoropyrimidine-based chemotherapy is the standard first-line treatment for metastatic colorectal cancer (CRC). We performed a propensity score (PS)-based analysis to report our real-world experience with long-term follow-up of this regimen for metastatic CRC. Methods In this retrospective study, 170 patients with newly diagnosed metastatic CRC treated with first-line combination chemotherapy between January 2003 and March 2021 were identified. Cox proportional hazards regression analysis and PS-based approaches with the logistic regression model were adopted, and the results were compared. Results The hazard ratio for overall survival (OS) in the oxaliplatin- and irinotecan-based groups was 0.79 (95% confidence interval = 0.56–1.11), and the median OS times in these groups were 16.8 and 13.0 months, respectively. The median time to progression (TTP) for these regimens were 9.0 and 8.9 months, respectively. The objective response rates for the oxaliplatin- and irinotecan-based groups were 42.7% and 34.6%, respectively. OS and TTP did not differ between these regimens in all PS matching models. Conclusions First-line treatment using fluoropyrimidine-based chemotherapy regimens in combination with oxaliplatin or irinotecan in patients with metastatic CRC provided comparable efficacy and tolerable toxicity profiles in a real-world setting with long-term follow-up.https://doi.org/10.1177/03000605231193583
spellingShingle Jirapat Wonglhow
Chirawadee Sathitruangsak
Arunee Dechaphunkul
Patrapim Sunpaweravong
Nineteen-year, real-world experience of first-line combination chemotherapy in patients with metastatic colorectal cancer: a propensity score analysis from southern Thailand
Journal of International Medical Research
title Nineteen-year, real-world experience of first-line combination chemotherapy in patients with metastatic colorectal cancer: a propensity score analysis from southern Thailand
title_full Nineteen-year, real-world experience of first-line combination chemotherapy in patients with metastatic colorectal cancer: a propensity score analysis from southern Thailand
title_fullStr Nineteen-year, real-world experience of first-line combination chemotherapy in patients with metastatic colorectal cancer: a propensity score analysis from southern Thailand
title_full_unstemmed Nineteen-year, real-world experience of first-line combination chemotherapy in patients with metastatic colorectal cancer: a propensity score analysis from southern Thailand
title_short Nineteen-year, real-world experience of first-line combination chemotherapy in patients with metastatic colorectal cancer: a propensity score analysis from southern Thailand
title_sort nineteen year real world experience of first line combination chemotherapy in patients with metastatic colorectal cancer a propensity score analysis from southern thailand
url https://doi.org/10.1177/03000605231193583
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AT chirawadeesathitruangsak nineteenyearrealworldexperienceoffirstlinecombinationchemotherapyinpatientswithmetastaticcolorectalcancerapropensityscoreanalysisfromsouthernthailand
AT aruneedechaphunkul nineteenyearrealworldexperienceoffirstlinecombinationchemotherapyinpatientswithmetastaticcolorectalcancerapropensityscoreanalysisfromsouthernthailand
AT patrapimsunpaweravong nineteenyearrealworldexperienceoffirstlinecombinationchemotherapyinpatientswithmetastaticcolorectalcancerapropensityscoreanalysisfromsouthernthailand