Colorectal Cancer Clinical Trial
Official title:
A Randomized Phase II Study of Anti-PD-1 and Limited Metastatic Site Radiation Therapy Versus Anti-PD-1 Alone for Patients With Microsatellite Instability-high (MSI-H) and Mismatch Repair Deficient (dMMR) Metastatic Solid Tumors
Verified date | November 2021 |
Source | University of Colorado, Denver |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Interventional |
To determine if the out-of-field ORR is improved with the addition of radiation therapy to anti-PD-1 for patients with MSI-H/dMMR metastatic solid tumors. Determine the rates of in-field tumor control, disease control (stable disease, partial response, complete response), durability of disease response, progression-free survival, overall survival, and to assess quality of life and toxicity. Determine the chronology and profile of the radiation-associated immune response.
Status | Withdrawn |
Enrollment | 0 |
Est. completion date | November 17, 2021 |
Est. primary completion date | November 17, 2021 |
Accepts healthy volunteers | No |
Gender | All |
Age group | 18 Years to 100 Years |
Eligibility | Inclusion Criteria: 1. Provision to sign and date the consent form. 2. Stated willingness to comply with all study procedures and be available for the duration of the study. 3. Adult patients, 18-100 years of age. 4. ECOG 0 or 1. 5. Unresectable or metastatic MSI-H/dMMR tumors eligible to receive pembrolizumab according to FDA-approved indications: - Solid tumors that have progressed following prior treatment and who have no satisfactory alternative treatment options OR - Colorectal cancer that has progressed following treatment with a fluoropyrimidine, oxaliplatin, and irinotecan11 6. Confirmation from medical or gynecologic oncology that the patient is eligible to receive pembrolizumab per FDA-approved indication for patients not currently receiving pembrolizumab . 7. At least one site of disease amenable to radiation therapy per the acceptable dosing regimens outlined in section 6.2, and at least one additional site of measurable disease suitable for out-of-field response assessment. 8. Adequate baseline labs for initiation of trial treatment: - absolute neutrophil count (ANC) >1,000/µL - platelets >75,000/µL - hemoglobin >8 g/dL - serum creatinine < 1.5 x ULN - serum total bilirubin < 1.5 x ULN - AST and ALT < 2.5 x ULN, or < 5 x ULN if liver metastasis are present Exclusion Criteria: 1. Pregnant women. Pregnancy testing is required for all female subjects of childbearing potential. 2. Patients with active collagen vascular disease (CVD), specifically systemic lupus erythematosus or scleroderma. Patients with a history of CVD without evidence of active disease are eligible for enrollment at the discretion of the study PI. 3. History of immunodeficiency, hypersensitivity to pembrolizumab, or other medical contraindication to receipt of pembrolizumab. 4. Active infection. 5. Active CNS metastases. Patients with treated CNS metastases are eligible. 6. Patients with a separate non-cutaneous cancer diagnosis for which the patient has not been without evidence of disease for at least 5 years. |
Country | Name | City | State |
---|---|---|---|
United States | University of Colorado Hospital | Denver | Colorado |
Lead Sponsor | Collaborator |
---|---|
University of Colorado, Denver | Cancer League of Colorado, Inc, National Cancer Institute (NCI) |
United States,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Out-of-field ORR improvement | • Out-of-field objective response rate (ORR: CR+PR) according to RECIST 1.1 assessment | 12 months | |
Secondary | in-field tumor control and disease control | In-field tumor control and disease control will be defined as SD, PR, or CR, of the target lesion, by RECIST 1.1 criteria | 12 Months | |
Secondary | Determine the chronology and profile of the radiation-associated immune response. | The University of Colorado School of Medicine Human Immune Monitoring Shared Resource (HIMSR) will quantify peripheral CD8, CD4, and regulatory T cell populations and characterize the relative functional state of these cells using activation markers (CD45RO, ICOS, and CD25) and inhibitory markers (TIM-3, CTLA-4, LAG-3, and PD-1). The HIMSR will also characterize peripheral dendritic cells (pDCs, CD1c+, and CD141+ subsets), monocytes (classical and non-classical subsets), myeloid-derived suppressor cells (MDSCs, granulocytic and monocytic subsets), and expression of activation (CD80 and HLA-DR) and inhibitory molecules (PDL1) on these cells. Further, cytokine production by NK cells, B cells, T cells, and monocytes will be measured by flow cytometry after brief ex-vivo stimulation. The HIMSR will also perform a protein multiplex array of 40 potential biomarkers in plasma. | 12 months | |
Secondary | Durability of disease response | In patients that achieve an objective response to pembrolizumab +/- RT, durability of response will be measured from the initiation of pembrolizumab until PD. | 12 months | |
Secondary | Progression-free Survival | Progression-free survival will be measured from the date of initiation of pembrolizumab to the time of tumor progression or death from any cause for one year. | 12 months | |
Secondary | Overall Survival | Overall survival will be measured from the date of initiation of pembrolizumab to the time of death from any cause for one year. | 12 Months | |
Secondary | Quality of life score | Quality of life questionnaire, 28 questions rating experience from 1 to 4 (4 being "very much", 1 being "not at all") and two questions rating overall health and quality of life on a scale from 1 to 7 (7 being excellent) | 12 Months |
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