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Spots Global Cancer Trial Database for Pembrolizumab + Poly-ICLC in MRP Colon Cancer

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Trial Identification

Brief Title: Pembrolizumab + Poly-ICLC in MRP Colon Cancer

Official Title: A Phase I/II Trial of Pembrolizumab (MK-3475) and Poly-ICLC in Patients With Metastatic Mismatch Repair-proficient (MRP) Colon Cancer

Study ID: NCT02834052

Study Description

Brief Summary: The main purpose of this study is to determine the dose of poly-ICLC that is safe and tolerable when it is combined with pembrolizumab in patients with colon cancer. This study will also evaluate how the combination of pembrolizumab and poly-ICLC activates the immune system in the patient's blood and inside the tumor; how it affects the size and number of tumor(s) in each patient; and how effective the combination is in patients with colon cancer that is unlikely to respond to pembrolizumab alone.

Detailed Description: Mismatch repair genes normally serve to fix the small glitches that occur when DNA is copied as cells divide. In 1993, researchers discovered that mutations in human mismatch repair genes play a key role in the development of certain forms of colorectal cancer; individuals who are deficient in these mismatch repair genes are at high risk for colorectal cancer. Accumulating evidence has shown that immunotherapy may be most effective against these cancers. Programmed cell death protein 1, also known as PD-1, functions as an immune checkpoint, down-regulating the immune system by preventing the activation of T-cells, which in turn reduces autoimmunity and promotes self-tolerance. A new class of immunotherapy drugs that block PD-1, the PD-1 inhibitors, activate the immune system to attack tumors and are therefore used with varying success to treat some types of cancer. Current clinical trials are showing that patients whose tumors are mismatch repair deficient are more likely to respond to immune-boosting anti-PD-1 drugs-such as pembrolizumab-than those with tumors proficient in mismatch repair. The idea is that the greater the number of DNA glitches in a tumor cell, the more abnormal proteins it will produce-and the more abnormal proteins that are generated, the greater the odds that the body's immune cells will regard the tumor cells as "foreign" and target them for destruction. Thus far, PD-1 inhibitors have shown great promise for mismatch repair deficient cancer patients, but not for mismatch repair proficient (MRP) cancer patients. In this clinical trial, the investigators hypothesize that treating MRP colon cancer patients with immunostimulating agent poly-ICLC will generate an inflammatory response, increasing epitope recognition and development of tumor reactive T-cells at the tumor site. However, interferon alpha and gamma produced by the poly-ICLC will increase PD-L1 expression and limit new T-cell development. Thus, PD1 blockade will increase the effectiveness of treatment with pembrolizumab.

Eligibility

Minimum Age: 18 Years

Eligible Ages: ADULT, OLDER_ADULT

Sex: ALL

Healthy Volunteers: No

Locations

Georgia Cancer Center at Augusta University, Augusta, Georgia, United States

Contact Details

Name: Asha Nayak, MD

Affiliation: Georgia Cancer Center at Augusta University

Role: PRINCIPAL_INVESTIGATOR

Name: Sharad Ghamande, MD

Affiliation: Georgia Cancer Center at Augusta University

Role: STUDY_DIRECTOR

Useful links and downloads for this trial

Clinicaltrials.gov

Google Search Results

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