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Prognostic value of hyperthermic intraperitoneal chemotherapy in gastric cancer with synchronous peritoneal metastases: a real-world retrospective study

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Abstract

Purpose

Peritoneal metastasis in gastric cancer (GC) is a late-stage condition with a poor prognosis. Cytoreductive surgery combined with hyperthermic intraperitoneal chemotherapy (HIPEC) is a popular treatment for peritoneal metastases. Here, we aim to investigate the real-world application and efficacy of HIPEC alone for GC patients with synchronous peritoneal metastases.

Methods

We conducted a retrospective analysis on GC patients with synchronous peritoneal metastasis at the Sixth Affiliated Hospital of Sun Yat-sen University between January 2011 and December 2022. Survival analyses and Cox regression models were performed based on overall survival (OS) and cancer-specific survival (CSS), and subgroup analysis was used to determine the prognostic value of HIPEC across different treatment.

Results

We enrolled 250 patients, of whom 120 (48%) received HIPEC while 130 (52%) did not. HIPEC showed no survival benefit for GC patients (P = 0.220 for OS and P = 0.370 for CSS). However, subgroup analysis found that HIPEC can only improve OS and CSS when combined with primary tumor resection (P = 0.034 for OS and P = 0.036 for CSS). Moreover, survival analyses also demonstrated that HIPEC independently improved OS (HR for OS = 0.58, 95% CI 0.37–0.92, P = 0.020) and CSS (HR for CSS = 0.58, 95% CI 0.37–0.93, P = 0.024) for patients who underwent primary site resection, but not for those who did not.

Conclusion

HIPEC can improve survival in GC patients with synchronous peritoneal metastases who have primary tumor resection, but not in those without primary tumor resection.

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Availability of data and materials

The datasets used and analyzed during the current study are available from the corresponding author on reasonable request.

Abbreviations

BMI:

Body mass index

CA:

Carbohydrate antigen

CEA:

Carcinoembryonic antigen

CI:

Confidence interval

CRS:

Cytoreductive surgery

CSS:

Cancer-specific survival

CT:

Computed tomography

GC:

Gastric cancer

HIPEC:

Hyperthermic intraperitoneal chemotherapy

HR:

Hazard ratio

MRI:

Magnetic resonance imaging

OS:

Overall survival

PD-1:

Programmed cell death protein 1

PET-CT:

Positron emission tomography-computed tomography

PCI:

Peritoneal cancer index

PIPAC:

Pressurized intraperitoneal aerosol chemotherapy

P stage:

Staging of peritoneal metastasis

TNM:

Tumor-node-metastasis

References

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Acknowledgements

The authors would like to thank all the staff members of the follow-up office of the Sixth Affiliated Hospital, Sun Yat-sen University. This study was supported by the National Natural Science Foundation of China (grant No. 82070684), the Guangdong Natural Science Fund for Outstanding Youth Scholars (grant No. 2020B1515020005), the program of Guangdong Provincial Clinical Research Center for Digestive Diseases (2020B1111170004), and the National Key Clinical Discipline.

Funding

This study was supported by the National Natural Science Foundation of China (Grant No. 82070684), the Guangdong Natural Science Fund for Outstanding Youth Scholars (Grant No. 2020B1515020005), the program of Guangdong Provincial Clinical Research Center for Digestive Diseases (2020B1111170004), and the National Key Clinical Discipline.

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Authors and Affiliations

Authors

Contributions

JG and LL designed the study; JG, ZD, and LJ collected and analyzed the data; SY, ZX, and CW drafted the initial manuscript; HC, DL, and DH revised the article critically; JP, SC, and LL reviewed and edited the article; JG, ZD, and LJ are co-first authors. All authors approved the final manuscript.

Corresponding authors

Correspondence to Junsheng Peng, Shi Chen or Lei Lian.

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Conflict of interest

The authors declare that they have no competing interests.

Ethical approval

This study was approved by the Clinical Research Ethics Committee of Sixth Affiliated Hospital of Sun Yat-sen University (No. 2021ZSLYEC-325).

Consent to participate

The consent to participate was not applicable for the retrospective study.

Consent for publication

Not applicable.

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Guo, J., Deng, Z., Jin, L. et al. Prognostic value of hyperthermic intraperitoneal chemotherapy in gastric cancer with synchronous peritoneal metastases: a real-world retrospective study. J Cancer Res Clin Oncol 149, 17881–17896 (2023). https://doi.org/10.1007/s00432-023-05481-9

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  • DOI: https://doi.org/10.1007/s00432-023-05481-9

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