Updated May 2026 · ClinicalTrials.gov

RECRUITINGPhase 1INTERVENTIONAL

Individual Response to Hyperthermic Intraperitoneal Chemotherapy (HIPEC) Treatment of Peritoneal Carcinomatosis From Peritoneal Mesothelioma or Atypical Mesothelial Proliferation or From Ovarian, Colorectal, or Appendiceal Histologies

Individualized Response Assessment to Hyperthermic Intraperitoneal Chemotherapy (HIPEC) for the Treatment of Peritoneal Carcinomatosis From Peritoneal Mesothelioma or Atypical Mesothelial Proliferation or From Ovarian, Colorectal, or Appendiceal Primaries

Individual Response to Hyperthermic Intraperitoneal Chemotherapy (HIPEC) Treatment of Peritoneal Carcinomatosis From Peritoneal Mesothelioma or Atypical Mesothelial Proliferation or From Ovarian, Colorectal, or Appendiceal Histologies (NCT04847063) is a Phase 1 interventional studying Peritoneal Mesothelioma and Peritoneal Carcinomatosis, sponsored by National Cancer Institute (NCI). RECRUITING as of the most recent ClinicalTrials.gov update. Talk to your doctor before contacting the trial site.

About This Trial

Background: Cytoreductive surgery (CRS) removes tumors in the abdomen. HIPEC is hyperthermic (heated) chemotherapy that washes the inside of the abdomen. CRS with HIPEC may help people with peritoneal carcinomatosis. These are tumors that have spread to the lining of the abdomen from other cancers. Researchers think they can improve the results of CRS with HIPEC treatment on these tumors by choosing the chemotherapy drugs used in HIPEC. Objective: To see if HIPEC after CRS can be improved, using either a model called the SMART (Sustained Microenvironment for Analysis of Resected Tissue) System or using 3-D cell culture (organoid) models, in order to test different chemotherapy drugs on tumors that were surgically removed prior to HIPEC treatment (these models are not attached to the body) versus tumors that were treated with HIPEC while still inside the body before being immediately surgically removed. Eligibility: Adults ages 18 and older who have peritoneal carcinomatosis that cannot be fully removed safely with surgery. Design: Participants will be screened with: Medical history Physical exam Blood and urine tests Electrocardiogram (EKG) Computed tomography (CT) scan Other imaging scans, as needed Tumor biopsy, if needed Laparoscopy (small cuts are made in the abdomen, and a tube with a light and a camera is used to see the organs in the abdomen), if needed Participants will enroll in NIH protocol #13C0176. This allows their tumor samples to be used in future research. Some screening tests may be repeated in the study. Participants will have CRS. As many of their visible tumors will be removed as possible during surgery except for a few specific tumors left to receive the HIPEC treatment. Then they will receive HIPEC and the remaining tumors will be immediately removed. Participants will be in the hospital for 7-21 days after this surgery (CRS with HIPEC). Participants will give tumor, fluid samples (from the abdomen during surgery), blood, saliva, cheek swab, and stool for research. They will complete surveys about their health and quality of life. Participants with peritoneal mesothelioma (mesothelioma primary only) will have genetic (DNA) testing to determine clinical (CLIA level) germline BAP1 status for research use. Participants will have follow-up visits for up to 5 years from CRS with HIPEC. If there is disease progression, participants may have CRS with HIPEC again. Participants will then have follow-up visits for up to 5 years from the date of last CRS with HIPEC.

What Stage of Research Is This?

Phase 1 trials test a new treatment for the first time in humans, focusing on safety, dosing, and how the body processes the drug. For Peritoneal Mesothelioma, a Phase 1 study typically enrolls a small number of participants — often healthy volunteers or patients who have exhausted standard treatment options. Phase 1 results determine whether a treatment moves into larger Phase 2 efficacy studies.

This trial is currently recruiting participants. The sponsor has registered the study with ClinicalTrials.gov as actively enrolling, which means new applicants who meet the eligibility criteria can be considered for screening. Trial status can change between updates — confirm current recruiting status with the study contact before traveling for a screening visit.

Target enrollment of 60 participants puts this in the typical range for a Phase 2-style efficacy study or a moderate Phase 3 trial in a focused Peritoneal Mesothelioma subpopulation. At this scale, the study has enough statistical power to detect a clear treatment effect but is not the largest cohort in the field.

Who May Be Eligible (Plain English)

* Who May Qualify: - Confirmation of peritoneal carcinomatosis from peritoneal mesothelioma or atypical mesothelial proliferation, or from appendiceal, colorectal, or ovarian, histologies by the Laboratory of Pathology, NCI. - Measurable or evaluable disease as defined by RECIST v1.1. criteria and/or by peritoneal carcinomatosis index (PCI) score. - Participants must be assessed to be able to undergo optimal cytoreduction (i.e., completeness of cytoreduction score of 1 or 0) with laparoscopically assessed PCI score threshold as indicated below: - Primary Histology: Appendiceal/Colorectal/Ovarian / PCI Cutoff for Eligibility: Total Score \< 20 (out of 39 possible points) - Primary Histology: Mesothelioma or atypical mesothelial proliferation / PCI Cutoff for Eligibility: Total Score \<= 30 (out of 39 possible points) - Age \>= 18 years. - ECOG performance status \<= 1 (Karnofsky \>= 80%). - Participants must have adequate organ and marrow function as defined below: - Absolute neutrophil count \>= 1,000/mcL - Platelets \>= 75,000/mcL - Total bilirubin within \<=1.5x institutional upper limit of normal (ULN) - AST (SGOT)/ ALT (SGPT) \<= 3x institutional upper limit of normal (ULN), or \<= 5.0x ULN in participants with liver metastases (only) - Creatinine within normal institutional limits OR --Creatinine clearance \>= 60 mL/min/1.73 m\^2 for participants with creatinine levels above institutional normal calculated using eGFR. - Because therapeutic agents used in this trial are known to be teratogenic, individuals of child-bearing potential (IOCBP) and individuals who are able to father a child must agree to use adequate contraception (hormonal or barrier method of birth control; abstinence) prior to study entry and for 180 days after last study treatment. - Ability of participant to understand and the willingness to sign a written willing to sign a consent form document. ...See full criteria on ClinicalTrials.gov Always talk to your doctor about whether this trial is right for you.

These are translations of the protocol\'s inclusion and exclusion criteria, simplified for patients and caregivers. The original clinical text appears below. Eligibility is ultimately confirmed by the trial site\'s screening process — this summary is a starting point for a conversation with your doctor, not a final determination.

Original Eligibility Criteria

View original clinical language

* INCLUSION CRITERIA: * Confirmation of peritoneal carcinomatosis from peritoneal mesothelioma or atypical mesothelial proliferation, or from appendiceal, colorectal, or ovarian, histologies by the Laboratory of Pathology, NCI. * Measurable or evaluable disease as defined by RECIST v1.1. criteria and/or by peritoneal carcinomatosis index (PCI) score. * Participants must be assessed to be able to undergo optimal cytoreduction (i.e., completeness of cytoreduction score of 1 or 0) with laparoscopically assessed PCI score threshold as indicated below: * Primary Histology: Appendiceal/Colorectal/Ovarian / PCI Cutoff for Eligibility: Total Score \< 20 (out of 39 possible points) * Primary Histology: Mesothelioma or atypical mesothelial proliferation / PCI Cutoff for Eligibility: Total Score \<= 30 (out of 39 possible points) * Age \>= 18 years. * ECOG performance status \<= 1 (Karnofsky \>= 80%). * Participants must have adequate organ and marrow function as defined below: * Absolute neutrophil count \>= 1,000/mcL * Platelets \>= 75,000/mcL * Total bilirubin within \<=1.5x institutional upper limit of normal (ULN) * AST (SGOT)/ ALT (SGPT) \<= 3x institutional upper limit of normal (ULN), or \<= 5.0x ULN in participants with liver metastases (only) * Creatinine within normal institutional limits OR --Creatinine clearance \>= 60 mL/min/1.73 m\^2 for participants with creatinine levels above institutional normal calculated using eGFR. * Because therapeutic agents used in this trial are known to be teratogenic, individuals of child-bearing potential (IOCBP) and individuals who are able to father a child must agree to use adequate contraception (hormonal or barrier method of birth control; abstinence) prior to study entry and for 180 days after last study treatment. * Ability of participant to understand and the willingness to sign a written informed consent document. * Ability and willingness of the participant to co-enroll on the tissue collection protocol 13C0176, Tumor, Normal Tissue and Specimens from Patients Undergoing Evaluation or Surgical Resection of Solid Tumors . EXCLUSION CRITERIA: * Participants with known extra-abdominal metastatic disease from the participant s appendiceal, colorectal, ovarian, or peritoneal mesothelioma primary. * Participants who have received intraperitoneal chemotherapy or other anti-cancer therapy within the last 4 weeks prior to the start of study treatment. * Participants who have undergone major surgery within the last 12 weeks prior to the start of study treatment. * History of allergic reactions attributed to platinum-containing compounds. * History of dihydropyrimidine dehydrogenase deficiency (only participants with appendiceal or colorectal cancer). * Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements. * Pregnant individuals are excluded from this study because the protocol involves major abdominal surgery and chemotherapeutic agents with the potential for teratogenic or abortifacient effects. Note: Due to an unknown but potential risk for adverse events in nursing infants secondary to treatment of the participant, nursing (including breastfeeding) should be discontinued if the participant is undergoing treatment (i.e., nursing participants must agree to discontinue nursing activities). * HIV-positive participants with detectable viral load despite antiretroviral therapy are ineligible because of participants increased risk of lethal infections when treated with marrow-suppressive therapy. HIV-positive participants who have undetectable viral load on antiretroviral therapy may be considered for this study only after consultation with a NIAID physician.

Treatments Being Tested

DRUG

Sodium Thiosulfate

Part of Arms 3 and 4, for cisplatin-based HIPEC: intravenous sodium thiosulfate given as a loading dose of 7.5 g/m2 in 150 mL 0.9% sodium chloride at the time of introducing cisplatin into the perfusion circuit, followed by a 12-hour pump-based infusion of 25.56 g/m2 in 1 L 0.9% sodium chloride

DRUG

5-Fluorouracil

Part of Arm 1, for oxaliplatin-based HIPEC: intravenous 5-fluorouracil given at a dose of 400 mg/m2 in 250 mL 0.9% sodium chloride over 10 minutes, co-administered with intravenous leucovorin at 20 mg/m2 in a separate bag of 250 mL 0.9% sodium chloride

DRUG

Oxaliplatin

Arm 1, intraperitoneal (IP) Oxaliplatin: 200 mg/m2 for 90 minutes, mixed in 250 mL of 5% dextrose solution. For oxaliplatin-based HIPEC, intravenous 5-fluorouracil given at a dose of 400 mg/m2 in 250 mL 0.9% sodium chloride over 10 minutes, co-administered with intravenous leucovorin at 20 mg/m2 in a separate bag of 250 mL 0.9% sodium chloride

DRUG

Doxorubicin

Part of Arm 3: intraperitoneal (IP) Doxorubicin co-therapy 15 mg/m2 for 60 minutes, given at time = 0 with cisplatin

PROCEDURE

Hyperthermic Intraperitonial Chemotherapy

Hyperthermic Intraperitonial Chemotherapy (HIPEC) with with standardized doses of chemotherapeutic agents as indicated by the subject's Arm assignment

DRUG

Cisplatin

Part of Arms 3 and 4, intraperitoneal (IP)cisplatin co-therapy: 75 mg/m2 for 60 minutes, mixed in 1 L of 0.9% sodium chloride. For cisplatin-based HIPEC, intravenous sodium thiosulfate given as a loading dose of 7.5 g/m2 in 150 mL 0.9% sodium chloride at the time of introducing cisplatin into the perfusion circuit, followed by a 12-hour pump-based infusion of 25.56 g/m2 in 1 L 0.9% sodium chloride

DRUG

Mitomycin C

Arm 2, intraperitoneal (IP) Mitomycin C monotherapy: dosing divided into two 60-mL syringes, 30 mg per syringe. 30 mg will be given at time = 0, and the remaining 10 mg of the dose will be given at time = 60 minutes. Part of Arm 4: Mitomycin C co-therapy 15 mg/m2 for 60 minutes, given at time = 0 with cisplatin

Locations (1)

Trial sites listed on ClinicalTrials.gov for this study. Site activation status can vary — confirm with the specific site before traveling for a screening visit.

National Institutes of Health Clinical Center

Bethesda, Maryland, United States

How to Talk to Your Doctor About This Trial

Bring the printable summary of this trial — including the NCT ID (NCT04847063), the sponsor (National Cancer Institute (NCI)), and the key eligibility criteria — to your next appointment. Your doctor can review the inclusion and exclusion criteria against your medical history, lab values, and current treatments to assess whether you are likely to qualify. They can also help you weigh whether trial participation makes sense alongside your existing care plan.

Useful questions to walk through together: What does the trial protocol require beyond standard care? How long is the active treatment phase, and how long is follow-up? Are there study visits at sites I can reach? Who pays for the trial-specific procedures, and who pays for standard-of-care portions? See our 25 questions to ask about clinical trials guide for a more complete checklist.

Authoritative Sources

The official record for this trial lives on ClinicalTrials.gov — the federal registry maintained by the National Library of Medicine at NIH. For background on how this trial fits into the FDA approval pathway, see the FDA drug approval process. For oncology-specific guidance for patients considering trials, the National Cancer Institute publishes patient-oriented overviews. International trial registries are aggregated by the WHO ICTRP.

Frequently Asked Questions

What is the NCT04847063 clinical trial studying?

Who can participate in NCT04847063?

Eligibility for this trial depends on the specific inclusion and exclusion criteria set by the sponsor. The plain-English summary above translates the most important criteria into accessible language; the official clinical text is preserved in the collapsible section underneath. Whether you fit any specific trial is a medical decision your doctor needs to confirm — bring the trial information to your treating physician for a full review against your medical history.

How do I contact the trial site for NCT04847063?

Contact information registered with ClinicalTrials.gov is shown in the sidebar of this page. Before reaching out, confirm with your treating physician that this trial is appropriate for your situation. The trial site will then walk you through the screening process to determine final eligibility.

Is participating in a clinical trial safe?

Clinical trials in the United States are regulated by the FDA and overseen by Institutional Review Boards (IRBs) that review the protocol for safety. Risk varies by trial — Phase 1 studies test new treatments in humans for the first time, while Phase 3 trials use treatments that have already passed earlier safety screening. The informed consent document for any specific trial details the known risks and what to expect. Discuss those risks with your physician before deciding whether to participate.

Where can I verify the data on this page?

Every detail on this page comes directly from the ClinicalTrials.gov API. Click "View on ClinicalTrials.gov" in the sidebar to see the official, unmodified record. The federal record is always authoritative; this page is a structured presentation with a plain-English eligibility translation. For background on how clinical trials are regulated, see the FDA drug approval process documentation.

How This Page Is Built

Every field on this page is pulled directly from the ClinicalTrials.gov API v2 — no estimates, no proxies. The plain-English eligibility translation is generated from the original protocol text and reviewed for fidelity to the underlying clinical criteria. The original clinical text remains visible in the collapsible section above so users and clinicians can verify the translation. Read the full methodology for the data pipeline and known limitations.

Source: ClinicalTrials.gov API v2 record for NCT04847063. Maintained by the National Library of Medicine at NIH. Public domain. Cite as: "TrialFinderData. NCT04847063. Data: ClinicalTrials.gov."

Medical disclaimer: This page is informational, not medical advice. Talk to your doctor about whether a clinical trial is right for you.

Last updated 2026-05-08 · Data from ClinicalTrials.gov.