New combo therapy shows promise for rare lung cancer
NCT ID NCT05380713
First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This phase 2 trial tested whether adding low-dose chemotherapy to radiation before surgery, followed by immunotherapy after surgery, could help people with malignant mesothelioma. Thirty participants were enrolled. The goal was to see if this approach boosts the immune system's ability to fight the cancer and improve survival.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- cyclophosphamide, tremelimumab, durvalumab
- What this could lead to
- If successful, this combination approach could improve immune response and survival for people with malignant mesothelioma.
- What could go wrong
- This is a small, early-phase trial with only 30 participants, so results may not apply widely. The treatment involves multiple drugs with potential side effects, and it's not yet proven to be better than standard care.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
-
Phase 2
Tests whether the treatment actually works, and watches for side effects, in a larger group.
- Participants
-
30 people
The number who actually took part.
- Started
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May 2022
- Finished
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Dec 2025
- Lead sponsor
-
Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
-
18 to 95 years
- Sex
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Anyone
- Healthy volunteers
-
Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: 1. Capable of giving signed informed consent which includes compliance with the requirements and restrictions listed in the informed consent form (ICF) and in this protocol. 2. Age ≥ 18 years at the time of study entry 3. Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1 4. Body weight \>30 kg 5. Adequate normal organ and marrow function as defined below: 6. Haemoglobin ≥9.0 g/dL 7. Absolute neutrophil count (ANC ≥1.0 × 109 /L) 8. Platelet count ≥75 × 109/L 9. Serum bilirubin ≤1.5 x institutional upper limit of normal (ULN). This will not apply to patients with confirmed Gilbert's syndrome (persistent or recurrent hyperbilirubinemia that is predominantly unconjugated in the absence of hemolysis or hepatic pathology), who will be allowed only in consultation with their physician. 10. AST (SGOT)/ALT (SGPT) ≤2.5 x institutional upper limit of normal unless liver metastases are present, in which case it must be ≤5x ULN 11. Measured creatinine clearance (CL) \>40 mL/min or Calculated creatinine clearance CL\>40 mL/min by the Cockcroft-Gault formula (Cockcroft and Gault 1976) or by 24-hour urine collection for determination of creatinine clearance: Males: Creatinine CL (mL/min) = Weight (kg) x (140 - Age) 72 x serum creatinine (mg/dL) Females: Creatinine CL (mL/min) = Weight (kg) x (140 - Age) x 0.85 72 x serum creatinine (mg/dL) 12. Patient is willing and able to comply with the protocol for the duration of the study including undergoing treatment and scheduled visits and examinations including follow up. 13. Must have a life expectancy of at least 12 weeks 14. Tumor amenable to biopsy 15. Histologically proven mesothelioma 16. Previously untreated mesothelioma 17. Stage I to III according to the 8th edition of the TNM staging system based on CT chest-abdomen and fluorodeoxyglucose (FDG) PET scan. Tumor assessment by CT and PET scan must be performed within 60 days prior to randomization. 18. Suitable for surgery and combined modality therapy in the opinion of the investigator Exclusion Criteria: 1. Participation in another clinical study with an investigational product during the last 8 weeks 2. Concurrent enrolment in another clinical study, unless it is an observational (non-interventional) clinical study or during the follow-up period of an interventional study 3. Any unresolved toxicity NCI CTCAE Grade ≥2 from previous anticancer therapy (including radiation , surgery and low dose cyclophosphamide) with the exception of alopecia, vitiligo, and the laboratory values defined in the inclusion criteria 1. Patients with Grade ≥2 neuropathy will be evaluated on a case-by-case basis after consultation with the Study Physician. 2. Patients with irreversible toxicity not reasonably expected to be exacerbated by treatment with durvalumab or tremelimumab may be included only after consultation with the Study Physician. 4. Any concurrent chemotherapy, IP, biologic, or hormonal therapy for cancer treatment. Concurrent use of hormonal therapy for non-cancer-related conditions (e.g., hormone replacement therapy) is acceptable. 5. Previous thoracic irradiation 6. Serious non-malignant disease (cardiovascular, pulmonary, systemic lupus erythematosus, scleroderma) that would preclude definitive radiation therapy 7. Major surgical procedure (as defined by the Investigator) within 28 days prior to the first dose of IP. 8. History of allogenic organ transplantation. 9. Active or prior documented autoimmune or inflammatory disorders (including inflammatory bowel disease \[e.g., colitis or Crohn's disease\], diverticulitis \[with the exception of diverticulosis\], systemic lupus erythematosus, Sarcoidosis syndrome, or Wegener syndrome \[granulomatosis with polyangiitis, Graves' disease, rheumatoid arthritis, hypophysitis, uveitis, etc.\]). The following are exceptions to this criterion: 1. Patients with vitiligo or alopecia 2. Patients with hypothyroidism (e.g., following Hashimoto syndrome) stable on hormone replacement 3. Any chronic skin condition that does not require systemic therapy 4. Patients without active disease in the last 5 years may be included but only after consultation with the study physician 5. Patients with celiac disease controlled by diet alone 10. Uncontrolled intercurrent illness, including but not limited to, ongoing or active infection, symptomatic congestive heart failure, uncontrolled hypertension, unstable angina pectoris, cardiac arrhythmia, interstitial lung disease, serious chronic gastrointestinal conditions associated with diarrhea, or psychiatric illness/social situations that would limit compliance with study requirement, substantially increase risk of incurring AEs or compromise the ability of the patient to give written informed consent 11. Patients with a history of other malignancies, except non-active malignancy that does not require treatment, nor anticipated to require treatment for the duration of the study, and in the opinion of the investigator would not pose a risk of increased toxicity, or difficulty to follow the protocol and assess endpoints of the study 12. History of leptomeningeal carcinomatosis 13. Patients with suspected brain metastases at screening should have an MRI (preferred) or CT each preferably with IV contrast of the brain prior to study entry. 14. Distant metastatic disease (M1), including brain metastasis or spinal cord compression 15. Mean QT interval corrected for heart rate using Fridericia's formula (QTcF) ≥470 ms calculated from 3 ECGs (within 15 minutes at 5 minutes apart) 16. History of active primary immunodeficiency 17. Known active hepatitis infection, positive hepatitis C virus (HCV) antibody, hepatitis B virus (HBV) surface antigen (HBsAg) or HBV core antibody (anti-HBc), at screening. Participants with a past or resolved HBV infection (defined as the presence of anti HBc and absence of HBsAg) are eligible. Participants positive for HCV antibody are eligible only if polymerase chain reaction is negative for HCV RNA. Adjust wording as necessary and consider evaluating at screening for studies with known hepatotoxicity or other relevant requirements. 18. Known to have tested positive for human immunodeficiency virus (HIV) (positive HIV 1/2 antibodies) or active tuberculosis infection (clinical evaluation that may include clinical history, physical examination and radiographic findings, or tuberculosis testing in line with local practice). 19. Current or prior use of immunosuppressive medication within 14 days before the first dose of durvalumab or tremelimumab. The following are exceptions to this criterion: 1. Intranasal, inhaled, topical steroids, or local steroid injections (e.g., intra articular injection) 2. Systemic corticosteroids at physiologic doses not to exceed 10 mg/day of prednisone or its equivalent 3. Steroids as premedication for hypersensitivity reactions (e.g., CT scan premedication) 4. Use of immunosuppressive medications for the management of IP-related AEs 5. Use in patients with contrast allergies 6. A temporary period of steroids will be allowed if clinically indicated and considered to be essential for the management of non-immunotherapy related events experienced by the patient (e.g., chronic obstructive pulmonary disease, radiation, nausea, etc.) 20. Receipt of live attenuated vaccine within 30 days prior to the first dose of IP. Note: Patients, if enrolled, should not receive live vaccine whilst receiving IP and up to 30 days after the last dose of IP. 21. Female patients who are pregnant or breastfeeding or male or female patients of reproductive potential who are not willing to employ effective birth control from screening to 90 days after the last dose of durvalumab monotherapy or180 days after the last dose of durvalumab and tremelimumab combination therapy. 22. Known allergy or hypersensitivity to any of the study drugs or any of the study drug excipients. 23. Prior randomisation or treatment in a previous durvalumab and/or tremelimumab clinical study regardless of treatment arm assignment. 24. Judgment by the investigator that the patient is unsuitable to participate in the study and the patient is unlikely to comply with study procedures, restrictions and requirements. 25. Failure to provide consent
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
-
Princess Margaret Cancer Centre
Toronto, Ontario, Canada
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Other studies related to the condition(s) this trial covers.
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