Safety and efficacy of systemic chemotherapy plus PD-1 inhibitor in combination with intravenous or intraperitoneal bevacizumab in gastric cancer with peritoneal metastasis

Abstract Background For gastric cancer patients, peritoneal metastasis poses a life-threatening risk due to the high incidence of treatment failure and disease recurrence. Conducting additional research aimed at identifying more efficacious strategies is imperative for enhancing treatment outcomes....

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Main Authors: Yuxi Ma, Yuting Li, Zhenyu Lin, Jing Wang, Jianli Hu, Hongli Liu, Yali Yang, Junli Liu, Tao Zhang
Format: Article
Language:English
Published: BMC 2025-06-01
Series:BMC Cancer
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Online Access:https://doi.org/10.1186/s12885-025-14206-9
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author Yuxi Ma
Yuting Li
Zhenyu Lin
Jing Wang
Jianli Hu
Hongli Liu
Yali Yang
Junli Liu
Tao Zhang
author_facet Yuxi Ma
Yuting Li
Zhenyu Lin
Jing Wang
Jianli Hu
Hongli Liu
Yali Yang
Junli Liu
Tao Zhang
author_sort Yuxi Ma
collection DOAJ
description Abstract Background For gastric cancer patients, peritoneal metastasis poses a life-threatening risk due to the high incidence of treatment failure and disease recurrence. Conducting additional research aimed at identifying more efficacious strategies is imperative for enhancing treatment outcomes. This study examined the efficacy and safety of systemic chemotherapy plus a PD-1 inhibitor combination with intravenous or intraperitoneal bevacizumab for gastric cancer with peritoneal metastasis. Methods We conducted the open label, two-arm pilot study involved receiving albumin-bound paclitaxel (260 mg/m2, d1) plus S-1 (80 mg/m2, d1-14) combined with sintilimab (200 mg, d1) and bevacizumab (7.5 mg/m2, d1) (Arm A) intraperitoneally for moderate or large ascites or intravenously (Arm B) for non- or small ascites. The clinical trial was registered at the Chinese Clinical Trial Registry (ChiCTR2100048947 DATE: 2021-07-19). Results Ten gastric cancer patients with peritoneal metastasis were enrolled in two arms (four in Arm A and six in Arm B) from August 19th, 2021 to June 1st, 2022. Until the end of the follow-up date, the mPFS for Arm A was 5.70 m (95% CI: 1.29–10.11), while Arm B had a mPFS of 9.07 m (95% CI: 3.79–14.35). The mOS for Arm A and Arm B was 8.43 (95% CI: 6.70-10.17) and 11.23 months (95% CI: 2.90-19.56). At least one common Grade 3/4 AE occurred in 25% of Arm A participants and 16.7% of Arm B patients. Conclusions Albumin-bound paclitaxel plus S-1 with a PD-1 inhibitor and intraperitoneal or intravenous bevacizumab was well tolerated in gastric cancer patients with peritoneal metastasis.
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spelling doaj-art-aced03e826ff46d0bac757db0ffa0dc62025-08-20T03:25:19ZengBMCBMC Cancer1471-24072025-06-012511910.1186/s12885-025-14206-9Safety and efficacy of systemic chemotherapy plus PD-1 inhibitor in combination with intravenous or intraperitoneal bevacizumab in gastric cancer with peritoneal metastasisYuxi Ma0Yuting Li1Zhenyu Lin2Jing Wang3Jianli Hu4Hongli Liu5Yali Yang6Junli Liu7Tao Zhang8Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and TechnologyCancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and TechnologyCancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and TechnologyCancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and TechnologyCancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and TechnologyCancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and TechnologyCancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and TechnologyCancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and TechnologyCancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and TechnologyAbstract Background For gastric cancer patients, peritoneal metastasis poses a life-threatening risk due to the high incidence of treatment failure and disease recurrence. Conducting additional research aimed at identifying more efficacious strategies is imperative for enhancing treatment outcomes. This study examined the efficacy and safety of systemic chemotherapy plus a PD-1 inhibitor combination with intravenous or intraperitoneal bevacizumab for gastric cancer with peritoneal metastasis. Methods We conducted the open label, two-arm pilot study involved receiving albumin-bound paclitaxel (260 mg/m2, d1) plus S-1 (80 mg/m2, d1-14) combined with sintilimab (200 mg, d1) and bevacizumab (7.5 mg/m2, d1) (Arm A) intraperitoneally for moderate or large ascites or intravenously (Arm B) for non- or small ascites. The clinical trial was registered at the Chinese Clinical Trial Registry (ChiCTR2100048947 DATE: 2021-07-19). Results Ten gastric cancer patients with peritoneal metastasis were enrolled in two arms (four in Arm A and six in Arm B) from August 19th, 2021 to June 1st, 2022. Until the end of the follow-up date, the mPFS for Arm A was 5.70 m (95% CI: 1.29–10.11), while Arm B had a mPFS of 9.07 m (95% CI: 3.79–14.35). The mOS for Arm A and Arm B was 8.43 (95% CI: 6.70-10.17) and 11.23 months (95% CI: 2.90-19.56). At least one common Grade 3/4 AE occurred in 25% of Arm A participants and 16.7% of Arm B patients. Conclusions Albumin-bound paclitaxel plus S-1 with a PD-1 inhibitor and intraperitoneal or intravenous bevacizumab was well tolerated in gastric cancer patients with peritoneal metastasis.https://doi.org/10.1186/s12885-025-14206-9Gastric cancerPeritoneal metastasisChemotherapySintilimabBevacizumab
spellingShingle Yuxi Ma
Yuting Li
Zhenyu Lin
Jing Wang
Jianli Hu
Hongli Liu
Yali Yang
Junli Liu
Tao Zhang
Safety and efficacy of systemic chemotherapy plus PD-1 inhibitor in combination with intravenous or intraperitoneal bevacizumab in gastric cancer with peritoneal metastasis
BMC Cancer
Gastric cancer
Peritoneal metastasis
Chemotherapy
Sintilimab
Bevacizumab
title Safety and efficacy of systemic chemotherapy plus PD-1 inhibitor in combination with intravenous or intraperitoneal bevacizumab in gastric cancer with peritoneal metastasis
title_full Safety and efficacy of systemic chemotherapy plus PD-1 inhibitor in combination with intravenous or intraperitoneal bevacizumab in gastric cancer with peritoneal metastasis
title_fullStr Safety and efficacy of systemic chemotherapy plus PD-1 inhibitor in combination with intravenous or intraperitoneal bevacizumab in gastric cancer with peritoneal metastasis
title_full_unstemmed Safety and efficacy of systemic chemotherapy plus PD-1 inhibitor in combination with intravenous or intraperitoneal bevacizumab in gastric cancer with peritoneal metastasis
title_short Safety and efficacy of systemic chemotherapy plus PD-1 inhibitor in combination with intravenous or intraperitoneal bevacizumab in gastric cancer with peritoneal metastasis
title_sort safety and efficacy of systemic chemotherapy plus pd 1 inhibitor in combination with intravenous or intraperitoneal bevacizumab in gastric cancer with peritoneal metastasis
topic Gastric cancer
Peritoneal metastasis
Chemotherapy
Sintilimab
Bevacizumab
url https://doi.org/10.1186/s12885-025-14206-9
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