Summary

Eligibility
for people ages 18 years and up (full criteria)
Dates
study started
estimated completion
Principal Investigator
Chloe Atreya
Photo of Chloe Atreya
Chloe Atreya

Description

Summary

In this study, participants with previously-treated locally-advanced unresectable or metastatic mismatched repair (MMR) deficient or microsatellite instability-high (MSI-H) colorectal carcinoma (CRC) will be treated with pembrolizumab (MK-3475, KEYTRUDA®) monotherapy. There will be two cohorts in this study: Cohort A and Cohort B. For Cohort A, participants are required to have been previously treated with standard therapies, which must include fluoropyrimidine, oxaliplatin, and irinotecan. Enrollment into Cohort A has been completed. For Cohort B, participants are required to have been previously treated with at least one line of systemic standard of care therapy: fluoropyrimidine + oxaliplatin or fluoropyrimidine + irinotecan +/ - anti-vascular endothelial growth factor (VEGF)/ epidermal growth factor regulator (EGFR) monoclonal antibody. The primary hypothesis is that Objective Response Rate (ORR) based on Response Evaluation Criteria in Solid Tumors v 1.1 (RECIST 1.1) assessed by central imaging vendor in participants with locally advanced unresectable or metastatic MMR deficient or MSI high CRC is greater than 15%.

Official Title

A Phase II Study of Pembrolizumab (MK-3475) as Monotherapy in Subjects With Previously Treated Locally Advanced Unresectable or Metastatic (Stage IV) Mismatched Repair Deficient or Microsatellite Instability-High Colorectal Carcinoma (KEYNOTE-164)

Details

With protocol amendment 08 (13-Nov-2019), once study participants have achieved the study objective or the study has ended, participants will be discontinued from this study and may be enrolled in a pembrolizumab extension study (NCT03486873) to continue protocol-defined assessments and treatment.

Keywords

Colorectal Carcinoma Programmed Cell Death-1 (PD1, PD-1) Programmed Death-Ligand 1 (PDL1, PD-L1) MSI-H MSI Carcinoma Colorectal Neoplasms Pembrolizumab

Eligibility

You can join if…

Open to people ages 18 years and up

  • Histologically-proven locally advanced unresectable or metastatic high colorectal carcinoma
  • Locally confirmed MMR deficient or MSI-H status
  • Has been previously treated with standard therapies, which must include, for Cohort A, fluoropyrimidine, oxaliplatin, and irinotecan, and for Cohort B, at least one line of systemic standard of care therapy: fluoropyrimidine + oxaliplatin or fluoropyrimidine
  • irinotecan +/- anti-VEGF/EGFR monoclonal antibody (mAb).
  • Eastern Cooperative Oncology Group performance status of 0 or 1
  • Life expectancy of greater than 3 months
  • Provides an archival or newly obtained (≤60 days prior to first dose of study treatment) tumor tissue sample (Cohort B)
  • At least one measurable lesion
  • Female participants of childbearing potential should be willing to use acceptable methods of contraception or be surgically sterile, or abstain from heterosexual activity for the course of the study through 120 days after the last dose of study treatment
  • Male participants should agree to use an adequate method of contraception starting with the first dose of study treatment through 120 days after the last dose of study treatment
  • Adequate organ function

You CAN'T join if...

  • Currently participating in another study and receiving trial treatment, participated in a study of an investigational agent and received trial treatment within 4 weeks of the first dose of treatment in this study, or used an investigational device within 4 weeks of the first dose of treatment in this study
  • Active autoimmune disease that has required systemic treatment in past 2 years
  • Diagnosis of immunodeficiency or is receiving systemic steroid therapy or any other form of immunosuppressive therapy within 7 days prior to the first dose of trial treatment
  • Known active central nervous system metastases and/or carcinomatous meningitis
  • Prior monoclonal antibody (mAb), chemotherapy, targeted small molecule therapy, or radiation therapy within 2 weeks prior to study Day 1 or not recovered (i.e., ≤ Grade 1 or at baseline) from adverse events (AEs) due to a previously administered agent
  • Has received prior therapy with an anti-PD-1, anti-PD-L1, or anti-PD-L2 agent
  • Has a known additional malignancy that is progressing or requires active treatment. Exceptions include basal cell carcinoma of the skin or squamous cell carcinoma of the skin that has undergone potentially curative therapy or in situ cervical cancer.
  • Received a live vaccine within 30 days of planned start of study treatment
  • Known history of human immunodeficiency virus (HIV)
  • Known active Hepatitis B or C
  • Has known history of, or any evidence of interstitial lung disease or active, noninfectious pneumonitis
  • Active infection requiring systemic therapy
  • Known psychiatric or substance abuse disorders that would interfere with cooperation with the requirements of the study
  • Pregnant or breastfeeding, or expecting to conceive or father children within the projected duration of the study, starting with the screening visit through 120 days after the last dose of study treatment

Lead Scientist at UCSF

  • Chloe Atreya
    Dr. Chloe E. Atreya specializes in gastrointestinal cancer, particularly colorectal cancer, at the UCSF Helen Diller Comprehensive Cancer Center. Her research focuses on the interplay of tumor genetics and response to therapies for colorectal cancer, with the goal of improving patient outcomes and quality of life by personalizing treatment.

Details

Status
in progress, not accepting new patients
Start Date
Completion Date
(estimated)
Sponsor
Merck Sharp & Dohme Corp.
Links
Merck Oncology Clinical Trials Information
ID
NCT02460198
Phase
Phase 2
Study Type
Interventional
Last Updated