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Phase 2 Study of Telomelysin (OBP-301) in Combination With Pembrolizumab in Esophagogastric Adenocarcinoma

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ClinicalTrials.gov Identifier: NCT03921021
Recruitment Status : Recruiting
First Posted : April 19, 2019
Last Update Posted : May 30, 2019
Sponsor:
Collaborator:
Oncolys BioPharma Inc
Information provided by (Responsible Party):
Weill Medical College of Cornell University

Tracking Information
First Submitted Date  ICMJE April 16, 2019
First Posted Date  ICMJE April 19, 2019
Last Update Posted Date May 30, 2019
Actual Study Start Date  ICMJE May 9, 2019
Estimated Primary Completion Date March 28, 2021   (Final data collection date for primary outcome measure)
Current Primary Outcome Measures  ICMJE
 (submitted: April 16, 2019)
Overall response rate, as assessed by radiographic imaging [ Time Frame: 2 year ]
Examination of patients with a partial response or complete response.
Original Primary Outcome Measures  ICMJE Same as current
Change History Complete list of historical versions of study NCT03921021 on ClinicalTrials.gov Archive Site
Current Secondary Outcome Measures  ICMJE
 (submitted: April 16, 2019)
  • Disease control rate, as assessed by radiographic imaging [ Time Frame: 1 year ]
    Examination of subjects with stable disease, a partial response, or complete response.
  • Duration of response, as assessed by radiographic imaging [ Time Frame: 1 year ]
    Defined as the duration that subjects who have responded to combination therapy remain without disease progression.
  • Overall survival, as assessed by survival [ Time Frame: 1 year ]
    Defined as the time from registration to death from any cause.
  • Progression free survival, as assessed by radiographic imaging and survival. [ Time Frame: 1 year ]
    Defined as the time from registration to cancer progression or death due to any cause
Original Secondary Outcome Measures  ICMJE Same as current
Current Other Pre-specified Outcome Measures
 (submitted: April 16, 2019)
  • Change from baseline in tumor-immune microenvironment, as measured by bulk RNA sequencing and single-cell RNA sequencing. [ Time Frame: Baseline, 2 years ]
    In this aim we will summarize the results from all patient data to assess what are the consistent changes observed in cellular composition in response to immunotherapy and we will investigate how these changes impact response to treatment.
  • Change from baseline in T-cell response, as measured by TCR-sequencing of tumor biopsies [ Time Frame: Baseline, 2 years ]
    This project will be focused on analyzing the immune landscape of individual tumors from tumor biopsies taken at baseline and on therapy. We will analyze changes associated with relapse and differences between refractory and sensitive patients. Our proposed analysis will take as input somatic mutations, raw WES reads, and raw RNA-Seq reads
  • Change from baseline in Immune Infiltrate by multi-parameter flow-cytometry [ Time Frame: Baseline, 2 years ]
    This powerful approach will be utilized to characterize tumor immune cell infiltrates at baseline, following the induction of combination therapy and at the time of resection. This will be one of the first longitudinal analyses of tumor immune cell infiltrates by multi-parameter flow cytometry following immunotherapy.
Original Other Pre-specified Outcome Measures Same as current
 
Descriptive Information
Brief Title  ICMJE Phase 2 Study of Telomelysin (OBP-301) in Combination With Pembrolizumab in Esophagogastric Adenocarcinoma
Official Title  ICMJE Phase 2 Study of Telomelysin (OBP-301) in Combination With Pembrolizumab in Esophagogastric Adenocarcinoma
Brief Summary This is a phase II study of OBP-301 with pembrolizumab in advanced gastric and gastroesophageal junction adenocarcinoma that has progressed on at least 2 lines of prior therapy for advanced disease.
Detailed Description

This is a phase II study of OBP-301 with pembrolizumab in advanced gastric and gastroesophageal junction adenocarcinoma that has progressed on at least 2 lines of prior therapy for advanced disease. Pembrolizumab has recently received FDA approval for PD-L1 positive gastric and GEJ adenocarcinoma based on the Keynote-059 study. The efficacy of pembrolizumab monotherapy is modest in PD-L1 positive patients (defined as a combined positive score, CPS, of > 1), with only a ~15% overall response rate. This study will examine the addition of the oncolytic virus, OBP-301, administered prior to pembrolizumab in this patient population. Patients will be enrolled in a two-stage design, with 18 patients in the first stage. All patients will receive OBP-301 at 1x1012 viral particles (VP)/ tumor injection administered every two weeks x 4 injections as well as standard dose pembrolizumab 200 mg IV every 3 weeks. The tumor will be injected with OBP-301 four times (d1, d15, d29, d43). The preference is to inject the primary tumor endoscopically. Metastatic lesions may be injected on a case-by-case basis after discussion with the PI (Shah). All patients treated with OBP-301 will be eligible for the safety cohort. 41 subjects will be recruited in total for both stage 1 and 2, to achieve 37 evaluable patients.

The primary endpoint is to examine the efficacy of OBP-301 with pembrolizumab in PD-L1 positive advanced gastric and gastroesophageal junction adenocarcinoma in the 3rd or 4th line setting, as assessed by the RECIST response rate and to to examine the safety of multiple OBP-301 intratumoral injections in combination with pembrolizumab in advanced gastroesophageal adenocarcinoma.

Study Type  ICMJE Interventional
Study Phase  ICMJE Phase 2
Study Design  ICMJE Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Condition  ICMJE Esophagogastric Adenocarcinoma
Intervention  ICMJE Drug: Telomelysin
OBP-301, the investigational product (IP) is formulated in 20 mM Tris pH 8.0, 25 mM NaCl with 2.5% glycerin, USP by volume. OBP-301 will be injected into the target tumor lesions.
Other Name: OBP-301
Study Arms  ICMJE Experimental: Telomelysin (OBP-301)
All patients will receive Telomelysin (OBP-301) at 1x1012 viral particles (VP)/ tumor injection administered every two weeks x 4 injections as well as standard dose pembrolizumab 200 mg IV every 3 weeks. The tumor will be injected with OBP-301 four times (d1, d15, d29, d43). The preference is to inject the primary tumor endoscopically. Metastatic lesions may be injected on a case-by-case basis after discussion with the PI (Shah).
Intervention: Drug: Telomelysin
Publications * Not Provided

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Recruitment Information
Recruitment Status  ICMJE Recruiting
Estimated Enrollment  ICMJE
 (submitted: April 16, 2019)
41
Original Estimated Enrollment  ICMJE Same as current
Estimated Study Completion Date  ICMJE March 28, 2022
Estimated Primary Completion Date March 28, 2021   (Final data collection date for primary outcome measure)
Eligibility Criteria  ICMJE

Inclusion Criteria:

  • Be willing and able to provide written informed consent for the trial.
  • Be >18 years of age on the day of signing the informed consent.
  • Have an Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1.
  • Have histologically or cytologically confirmed advanced or metastatic gastric or gastroesophageal junction adenocarcinoma.
  • Tumor should be at least 1 cm in size and amenable to intratumoral injection.
  • Patient must have received at least 2 lines of systemic therapy for advanced disease.
  • Tumor must be PD-L1 positive, as defined by a combined positive score (CPS).
  • Have one or more measurable lesions based on iRECIST.
  • Be willing to provide tissue; newly obtained endoscopic biopsy specimens or formalin-fixed, paraffin-embedded (FFPE) block specimens.
  • Female subjects of childbearing potential have a negative urine or serum pregnancy test within 7 days prior to enrollment. If the urine test is positive or cannot be confirmed as negative, a serum pregnancy test will be required. It is allowed that the test at the same day at 7 days prior to enrollment. And male / female subjects of childbearing potential must agree to use an adequate method of contraception starting with signing the informed consent through 120 days after the last dose of study medication.
  • Demonstrated adequate organ function as defined in following criteria. All screening labs should be performed within 14 days of enrollment. Note: Subject must not have taken transfusion, hematopoietic agent; granulocyte-colony stimulating factor (G-CSF) etc., and/or oxygen supplementation within 7 days before the screening labs.

Absolute neutrophil count (ANC)>=1,000 /mm3 Platelets>=100,000 /mm3 Hemoglobin>=9.0 g/dL Serum total bilirubin<=2.0 mg/dL Aspartate aminotransferase (AST) (SGOT) and alanine aminotransferase (ALT) (SGPT)<= 2.5x Upper limit of normal (ULN). For subjects with liver metastases<= 5x ULN.

Serum creatinine<= 1.5 mg/dL; or if serum creatinine > 1.5 mg/dL, measured or c calculated creatinine/clearance >=60 mL/min (Cockcroft-Gault formula).

  • Life expectancy of ≥ 6 months from the first OBP-301 treatment.
  • Understand the study requirements and the treatment procedures, and is willing to comply with all specified follow-up evaluations, and provides written informed consent before any study-specific tests or procedures are performed.

Exclusion Criteria:

  • The presence of any of the following criteria will constitute cause for the exclusion of the participant:1. Is currently participating and receiving study therapy or has participated in a study of an investigational agent and received study therapy within 4 weeks of study Day 1.
  • Has an active autoimmune disease that has required systemic treatment in past 2 years.
  • Has a diagnosis of immunodeficiency or is receiving systemic steroid therapy (greater than equivalent of prednisone 20 mg/day) or any other form of immunosuppressive therapy within 7 days prior to study Day 1.
  • Has known active central nervous system metastases and/or carcinomatous meningitis.
  • Has had prior anti-cancer monoclonal antibody chemotherapy, targeted small molecule therapy, or radiation therapy within 2 weeks prior to study Day 1, who has not recovered from adverse events due to a previously administered agent.
  • Has had prior immunotherapy targeted to Programmed cell death 1 (PD-1), PD-L1 or PD-L2.
  • Has a known additional malignancy within 3 years of first injection of OBP-301 that is progressing or requires active treatment, with the exception of prostate cancer controlled with androgen deprivation therapy.
  • Has received a live vaccine within 30 days of planned start of study therapy.
  • Patients known to have acute or chronic active hepatitis B virus (HBV), hepatitis C virus (HCV), or human immunodeficiency virus (HIV).
  • Has known history of, or any evidence of active, non-infectious pneumonitis.
  • Has an active infection requiring systemic therapy within 2 weeks of Day 1.
  • Has known psychiatric or substance abuse disorders that would interfere with cooperation with the requirements of the trial.
  • Is pregnant or breastfeeding, or expecting to conceive or father children within the projected duration of the trial, starting with the screening visit through 120 days after the last dose of trial treatment.
  • Previous severe hypersensitivity to another monoclonal antibody
  • Has a history or current evidence of any condition, therapy, or laboratory abnormality that might confound the results of the trial, interfere with the subject's participation for the full duration of the trial, or is not in the best interest of the subject to participate, in the opinion of the treating investigator.
  • Uncontrolled intercurrent illness including, but not limited to, uncontrolled diabetes, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/psychological incompetence, whereby in the opinion of the Investigator the patient is assessed as being unable to provide information, consent, or comply with the study requirements and procedures.
  • Patients who are pregnant or breastfeeding, or expecting to conceive or father children within the projected timeframe of the study, starting from the time of the Screening Visit through 4 months (120 days) after the last OBP-301 administration. Females of childbearing potential must have a negative serum or urine pregnancy test at Screening. A female not of childbearing potential is one who has undergone bilateral oophorectomy or who has had no menses for 12 consecutive months.
Sex/Gender  ICMJE
Sexes Eligible for Study: All
Ages  ICMJE 18 Years and older   (Adult, Older Adult)
Accepts Healthy Volunteers  ICMJE No
Contacts  ICMJE
Contact: Sabrina Machado, RN 646.962.3378 sam4006@med.cornell.edu
Listed Location Countries  ICMJE United States
Removed Location Countries  
 
Administrative Information
NCT Number  ICMJE NCT03921021
Other Study ID Numbers  ICMJE 1807019403
Has Data Monitoring Committee Yes
U.S. FDA-regulated Product
Studies a U.S. FDA-regulated Drug Product: Yes
Studies a U.S. FDA-regulated Device Product: No
IPD Sharing Statement  ICMJE
Plan to Share IPD: No
Responsible Party Weill Medical College of Cornell University
Study Sponsor  ICMJE Weill Medical College of Cornell University
Collaborators  ICMJE Oncolys BioPharma Inc
Investigators  ICMJE
Principal Investigator: Manish Shah, MD Weill Cornell Medicine
PRS Account Weill Medical College of Cornell University
Verification Date May 2019

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP