Intraperitoneal and Appendiceal Malignancies
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A comprehensive precision approach using patient-derived organoids to guide personalized HIPEC is feasible and shows promising early results.
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Background/Objectives: OrganoHIPEC is a phase-II, two-stage, open-label clinical trial that investigates if cytoreductive surgery (CRS) and patient-tailored HIPEC, based on a preclinical platform using patient-derived organoids, can improve disease control in peritoneal metastases from colorectal cancer (CRC-PM). Methods: Adults with limited CRC-PM and no distant metastases were included. CRC-PM were sampled for organoid development during diagnostic laparoscopy. These organoids were used in an in vitro HIPEC model to test various drugs suitable for intraperitoneal administration. After 3–6 months of systemic chemotherapy, patients without progression underwent CRS/HIPEC with personalized regimens based on organoid drug response. To detect an increase in 12-month peritoneal disease-free survival from 40% to 60%, 24 patients are needed. According to the two-stage design, if 12 months. Peritoneal relapse occurred at 8 months in two patients, and one died of liver metastases at 7 months. Seven patients remained PM-free for >12 months (median 16.4, range 12.6–28.4). Conclusions: A comprehensive precision approach using patient-derived organoids to guide personalized HIPEC is feasible and shows promising early results. High-dose oxaliplatin is poorly active. As 7/10 patients achieved the endpoint of 12-month PM-free survival, Stage-1 was successfully completed. The trial is proceeding to Stage-2.
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@article{Baratti2026Tailoring,
title = {Tailoring HIPEC with Patient-Derived Organoids in Colorectal Peritoneal Metastases: Results from the First Stage of the Prospective Phase II OrganoHIPEC Clinical Trial (Clinicaltrials.gov NCT06057298)},
author = {Dario Baratti and Luca Varinelli and Marcello Guagliò and Shigeki Kusamura and Tommaso Cavalleri and Davide Battistessa and Giovanna Sabella and Gaia Colletti and Manuela Gariboldi and Marcello Deraco},
journal = {Cancers},
year = {2026},
doi = {10.3390/cancers18162722},
url = {https://doi.org/10.3390/cancers18162722}
}FAQ
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