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Updated May 2026 · ClinicalTrials.gov

RECRUITINGPhase 2INTERVENTIONAL

Testing the Addition of Immunotherapy Before Surgery for Patients With Sarcomatoid Mesothelioma

Official Title Neoadjuvant Immunotherapy in Sarcomatoid Mesothelioma

Testing the Addition of Immunotherapy Before Surgery for Patients With Sarcomatoid Mesothelioma (NCT05647265) is a Phase 2 interventional studying Pleural Biphasic Mesothelioma and Pleural Sarcomatoid Mesothelioma, sponsored by Alliance for Clinical Trials in Oncology. RECRUITING as of the most recent ClinicalTrials.gov update. Talk to your doctor before contacting the trial site.

Important: This information is not medical advice. Talk to your doctor about whether a clinical trial is right for you.

About This Trial

This phase II trial evaluates the safety and effectiveness of giving immunotherapy (nivolumab and ipilimumab) before surgery for controlling disease in patients with stage I-IIIa sarcomatoid mesothelioma. Immunotherapy with monoclonal antibodies, such as nivolumab and ipilimumab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. Giving immunotherapy before surgery may be more effective at controlling disease in patients with sarcomatoid mesothelioma than giving immunotherapy alone.

What Stage of Research Is This?

Phase 2 trials evaluate whether a treatment actually works against Pleural Biphasic Mesothelioma and continue monitoring side effects. Phase 2 enrolls larger groups (typically 100–300 patients) and produces the first real efficacy signal. A successful Phase 2 readout is what unlocks the much larger Phase 3 confirmatory trials needed for FDA approval.

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.

With a target enrollment of 26 participants, this is a small study — typical of early-phase research, rare-disease trials, or pilot studies designed to generate preliminary signal before a larger study is launched.

Who May Be Eligible (Plain English)

Who May Qualify: - Sarcomatoid or sarcomatoid-dominant (\> 50%) biphasic, pleural mesothelioma - Stage: I-IIIA disease per Union for International Cancer Control (UICC) TNM Classification of Malignant Tumours 8th edition - Measurable disease or non-measurable disease as defined - No prior treatment which would be considered treatment for the primary neoplasm or impact the primary endpoint - No treatment with hormones or other chemotherapeutic agents except for hormones administered for non-disease-related conditions (e.g., insulin for diabetes and or hormonal therapy for breast, prostate cancer etc.) - Not pregnant and not nursing, because this study involves an investigational agent whose genotoxic, mutagenic and teratogenic effects on the developing fetus and newborn are unknown \* Therefore, for women of childbearing potential only, a negative pregnancy test done =\< 14 days prior to registration is required - Age \>= 18 years - Eastern Cooperative Oncology Group (ECOG) performance status =\< 2 or Karnofsky \>= 60% - Absolute neutrophil count (ANC) \>= 1,000/mm\^3 - Leukocytes \>= 2,000/mm\^3 - Platelet count \>= 100,000/mm\^3 - Creatinine =\< 1.5 x upper limit of normal (ULN) OR creatinine clearance \>= 40 mL/min - Total bilirubin =\<1.5 x ULN, except patients with Gilbert Syndrome who can have total bilirubin \< 3.0 mg/dl - Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) =\< 3.0 x ULN - Alkaline (alk) phosphatase (phos) =\< 3.0 x ULN - No active, known or suspected autoimmune conditions (where your immune system attacks your own body) except for vitiligo, type I diabetes mellitus, residual hypothyroidism due to autoimmune condition only requiring hormone replacement, psoriasis not requiring systemic treatment, or conditions not expected to recur in the absence of an external trigger - No active systemic infection requiring therapy, as well as positive tests for hepatitis B surface antigen or hepatitis C antibody ...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: * Sarcomatoid or sarcomatoid-dominant (\> 50%) biphasic, pleural mesothelioma * Stage: I-IIIA disease per Union for International Cancer Control (UICC) TNM Classification of Malignant Tumours 8th edition * Measurable disease or non-measurable disease as defined * No prior treatment which would be considered treatment for the primary neoplasm or impact the primary endpoint * No treatment with hormones or other chemotherapeutic agents except for hormones administered for non-disease-related conditions (e.g., insulin for diabetes and or hormonal therapy for breast, prostate cancer etc.) * Not pregnant and not nursing, because this study involves an investigational agent whose genotoxic, mutagenic and teratogenic effects on the developing fetus and newborn are unknown \* Therefore, for women of childbearing potential only, a negative pregnancy test done =\< 14 days prior to registration is required * Age \>= 18 years * Eastern Cooperative Oncology Group (ECOG) performance status =\< 2 or Karnofsky \>= 60% * Absolute neutrophil count (ANC) \>= 1,000/mm\^3 * Leukocytes \>= 2,000/mm\^3 * Platelet count \>= 100,000/mm\^3 * Creatinine =\< 1.5 x upper limit of normal (ULN) OR creatinine clearance \>= 40 mL/min * Total bilirubin =\<1.5 x ULN, except patients with Gilbert Syndrome who can have total bilirubin \< 3.0 mg/dl * Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) =\< 3.0 x ULN * Alkaline (alk) phosphatase (phos) =\< 3.0 x ULN * No active, known or suspected autoimmune disease except for vitiligo, type I diabetes mellitus, residual hypothyroidism due to autoimmune condition only requiring hormone replacement, psoriasis not requiring systemic treatment, or conditions not expected to recur in the absence of an external trigger * No active systemic infection requiring therapy, as well as positive tests for hepatitis B surface antigen or hepatitis C antibody * No history of any other condition that may require the initiation of anti-tumor necrosis factor alpha (TNFalpha) therapies or other immunosuppressant medications during the study * Human immunodeficiency virus (HIV)-infected patients on effective anti-retroviral therapy with undetectable viral load within 6 months are eligible for this trial * Patients with known history or current symptoms of cardiac disease, or history of treatment with cardiotoxic agents, should have a clinical risk assessment of cardiac function using the New York Heart Association Functional Classification. To be eligible for this trial, patients should be class 2B or better * Patients with a prior or concurrent malignancy whose natural history or treatment does not have the potential to interfere with the safety or efficacy assessment of the investigational regimen are eligible for this trial * STEP 2 ELIGIBILITY CRITERIA: Completion of at least 1 cycle of treatment and not have an unresolved adverse event that would preclude surgery * STEP 2 ELIGIBILITY CRITERIA: No evidence of progression that would preclude resection * STEP 2 ELIGIBILITY CRITERIA: ECOG performance status =\< 2 or Karnofsky \>= 60% * STEP 2 ELIGIBILITY CRITERIA: Predicted forced expiratory volume in 1 second (FEV1) \> 35% and postoperative predicted diffusion capacity of the lung for carbon monoxide (DLCO) \> 35% * STEP 2 ELIGIBILITY CRITERIA: Registration to step 2 no less than 21 days and no more than 90 days after the last dose of neoadjuvant therapy Exclusion Criteria: * No patients deemed to be unresectable or poor surgical candidates * No patients with chest wall invasion, peritoneal spread, contralateral pleural involvement, mediastinal organ involvement, vertebral involvement, or metastases to contralateral intrathoracic lymph nodes, or any supraclavicular nodes * No patients with a history of symptomatic interstitial lung disease

Treatments Being Tested

BIOLOGICAL

Nivolumab

Given IV

BIOLOGICAL

Ipilimumab

Given IV

PROCEDURE

Surgical Procedure

Undergo surgery

PROCEDURE

Computed Tomography

undergo CT

PROCEDURE

Magnetic Resonance Imaging

Undergo MRI

PROCEDURE

Positron Emission Tomography

Undergo PET

Locations (20)

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.

Anchorage Associates in Radiation Medicine
Anchorage, Alaska, United States
Anchorage Radiation Therapy Center
Anchorage, Alaska, United States
Alaska Breast Care and Surgery LLC
Anchorage, Alaska, United States
Alaska Oncology and Hematology LLC
Anchorage, Alaska, United States
Alaska Women's Cancer Care
Anchorage, Alaska, United States
Katmai Oncology Group
Anchorage, Alaska, United States
Providence Alaska Medical Center
Anchorage, Alaska, United States
Kingman Regional Medical Center
Kingman, Arizona, United States
Mayo Clinic Hospital in Arizona
Phoenix, Arizona, United States
Mayo Clinic in Arizona
Scottsdale, Arizona, United States
PCR Oncology
Arroyo Grande, California, United States
Providence Saint Joseph Medical Center/Disney Family Cancer Center
Burbank, California, United States
UC San Diego Moores Cancer Center
La Jolla, California, United States
Providence Queen of The Valley
Napa, California, United States
Providence Medical Foundation - Santa Rosa
Santa Rosa, California, United States
Providence Santa Rosa Memorial Hospital
Santa Rosa, California, United States
Beebe Medical Center
Lewes, Delaware, United States
Beebe South Coastal Health Campus
Millville, Delaware, United States
Delaware Clinical and Laboratory Physicians PA
Newark, Delaware, United States
Helen F Graham Cancer Center
Newark, Delaware, United States

How to Talk to Your Doctor About This Trial

Bring the printable summary of this trial — including the NCT ID (NCT05647265), the sponsor (Alliance for Clinical Trials in Oncology), 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 NCT05647265 clinical trial studying?

This phase II trial evaluates the safety and effectiveness of giving immunotherapy (nivolumab and ipilimumab) before surgery for controlling disease in patients with stage I-IIIa sarcomatoid mesothelioma. Immunotherapy with monoclonal antibodies, such as nivolumab and ipilimumab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. Giving immunotherapy before surgery may be more effective at controlling disease in patients with sarcomatoid mesothelioma than giving immunotherapy alone. The full protocol is registered on ClinicalTrials.gov and includes the primary outcome measures, eligibility criteria, and study endpoints.

Who can participate in NCT05647265?

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 NCT05647265?

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 NCT05647265. Maintained by the National Library of Medicine at NIH. Public domain. Cite as: "TrialFinderData. NCT05647265. 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.