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INTERACT Stomach-II

Intraperitoneal Irinotecan Combined With Systemic Therapy for Patients With Gastric Peritoneal Metastases: A Phase II, Multicenter Study

Status
Recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07133490
Enrollment
55
Registered
2025-08-21
Start date
2025-10-01
Completion date
2028-07-01
Last updated
2026-06-01

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Peritoneal Metastases From Gastric Cancer

Keywords

Gastric cancer, Peritoneal metastases, Intraperitoneal chemotherapy, Irinotecan

Brief summary

This is a phase II study conducted in three hospitals in the Netherlands (Erasmus MC in Rotterdam, Catharina Hospital in Eindhoven, and the Netherlands Cancer Institute in Amsterdam). A total of 55 patients will take part. The aim is to test whether a new combination treatment is feasible for patients with gastric peritoneal metastases (PM). The treatment includes chemotherapy (intraperitoneal irinotecan and standard systemic therapy such as CAPOX or FOLFOX), and may also include nivolumab or trastuzumab, depending on biomarker results.

Interventions

Through a peritoneal access port, irinotecan will be administered at the same time as systemic (chemo)therapy

Sponsors

Erasmus Medical Center
Lead SponsorOTHER
Catharina Ziekenhuis Eindhoven
CollaboratorOTHER
The Netherlands Cancer Institute
CollaboratorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Healthy volunteers
No

Inclusion criteria

* Histologically confirmed gastric cancer or gastroesophageal junction adenocarcinoma * Pathologically and clinically confirmed diagnosis of macroscopic peritoneal metastases (defined as PCI score ≥ 1) * WHO-performance score of 0 to 1 with a life expectancy greater than or equal to three months * Aged 18 years or older * Written informed consent according to the ICH-GCP and national/local regulations

Exclusion criteria

* Distant metastases other than peritoneal metastases or metastatic lymph nodes * Prior palliative systemic therapy for gastric cancer * Prior (neo)-adjuvant systemic therapy for gastric cancer within the six months before enrolment in this study * Severe symptomatic ascites requiring monthly recurrent therapeutic paracentesis * Homozygous dihydropyrimidine dehydrogenase (DPD) deficiency * Any contra-indication for the (planned) systemic chemotherapy (e.g. active infection, serious concomitant disease, severe allergy, persistent neurologic toxicity after (neo-)adjuvant oxaliplatin based systemic therapy), as determined by the treating medical oncologist * Inadequate organ functions (defined as a hemoglobin \<5.0 mmol/l, an absolute neutrophil count \<1.5 x 109/l, platelet count \<100 x 109/l, creatinine clearance \<30 ml/min, bilirubin \>2x ULN and liver transaminases \>2.5x ULN) * Pregnant or lactating women * Concomitant participation in any clinical study that could modify the outcomes relevant to this study * Absence of assurance of compliance with the protocol

Design outcomes

Primary

MeasureTime frameDescription
Feasibility of intraperitoneal administration of irinotecanFrom enrollment until the completion of all chemotherapy cycles: either 6 cycles of CAPOX (21 days per cycle) or 8 cycles of FOLFOX (14 days per cycle)Percentage of patients who completed all planned cycles of intraperitoneal irinotecan in combination with systemic therapy (6 cycles in the case of CAPOX, 8 cycles in the case of FOLFOX)

Countries

Netherlands

Contacts

CONTACTMicha J de Neijs, Bsc
m.deneijs@erasmusmc.nl010 70 39640
PRINCIPAL_INVESTIGATORPieter C van der Sluis, MD PhD

Erasmus MC, University Medical Center Rotterdam

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jun 2, 2026