Clinical Trials /

Phase 2 Study of OBP-301 (Telomelysin™) in Combination With Pembrolizumab and SBRT in Patients With HNSCC With Inoperable, Recurrent or Progressive Disease

NCT04685499

Description:

The purpose of this study is to test the effects, of the research study drug Telomelysin (OBP-301) in combination with pembrolizumab in subjects with inoperable, recurrent, or progressive squamous cell carcinoma of the head and neck. Telomelysin is an investigational treatment, while pembrolizumab and SBRT are approved standard treatments. The combination of these three treatments is also considered investigational.

Related Conditions:
  • Head and Neck Squamous Cell Carcinoma
Recruiting Status:

Recruiting

Phase:

Phase 2

Trial Eligibility

Document

Title

  • Brief Title: Phase 2 Study of OBP-301 (Telomelysin™) in Combination With Pembrolizumab and SBRT in Patients With HNSCC With Inoperable, Recurrent or Progressive Disease
  • Official Title: Phase 2 Study of OBP-301 (Telomelysin ™) in Combination With Pembrolizumab and Stereotactic Body Irradiation in Patients With Head and Neck Squamous Cell Carcinoma With Inoperable, Recurrent or Progressive Disease

Clinical Trial IDs

  • ORG STUDY ID: 19-12021148
  • NCT ID: NCT04685499

Conditions

  • Head and Neck Squamous Cell Carcinoma With Inoperable Recurrent or Progressive Disease

Interventions

DrugSynonymsArms
OBP-301TelomelysinTelomelysin (OBP-301)
PembrolizumabTelomelysin (OBP-301)

Purpose

The purpose of this study is to test the effects, of the research study drug Telomelysin (OBP-301) in combination with pembrolizumab in subjects with inoperable, recurrent, or progressive squamous cell carcinoma of the head and neck. Telomelysin is an investigational treatment, while pembrolizumab and SBRT are approved standard treatments. The combination of these three treatments is also considered investigational.

Detailed Description

      This is a phase II open label single arm study of OBP-301 in combination with pembrolizumab
      and SBRT in advanced HNSCC which is either recurrent and inoperable, or progressing after
      prior radiation with curative-intent for advanced disease (adjuvant or definitive with or
      without chemotherapy or cetuximab).

      The efficacy of pembrolizumab monotherapy is modest in second or third line of treatment of
      advanced head and neck cancer (~response rate 16-22%). SBRT reirradiation in patients that
      received prior surgery and chemoradiation for advanced disease is associated with a response
      rate (RR) of approximately 60% and approximately 50% 1-year survival. Recently, the results
      of the Keynote-048 study were published. The projected 1-year survival in the immunotherapy
      arms with pembrolizumab alone or pembrolizumab and chemotherapy was approximately 57%. So, at
      present, the benchmark RR for patients with head and neck squamous cell carcinoma with
      inoperable, recurrent or progressive disease treated with SBRT is approximately 60% and the 1
      year survival for patients with head and neck squamous cell carcinoma (HNSCC) with
      inoperable, recurrent or progressive disease using the most effective contemporary treatments
      including immunotherapy is approximately 50-57%. Trying to improve the results of the current
      standard of care, this study will examine the effects of oncolytic virus, OBP-301,
      administered in addition to pembrolizumab and SBRT in this patient population. The goal of
      using this triple therapeutic combination is to enhance the chances of cure of the patients.

      A total of 36 patients will be enrolled into a two-stage parallel cohort design: In the first
      stage, 12 patients will be enrolled.

      All patients will receive intratumoral injection(s) with OBP-301. If tolerated and no
      progression is observed, up to twelve injections may be given in each patient.

      If the targeted injected lesion(s) disappear, another lesion can be injected at the
      Investigator's discretion.

      A minimum additional 3 doses of concurrent OBP-301 and pembrolizumab will be given if no
      toxicity, technical impediment to injection or progression is seen.

      A maximum total of up to 9 doses of concurrent OBP-301 and pembrolizumab will be given.

      Pembrolizumab alone will be continued after day 183 for a total treatment time up to 1 year.
    

Trial Arms

NameTypeDescriptionInterventions
Telomelysin (OBP-301)ExperimentalAll patients will receive intratumoral injection(s) with OBP-301. If tolerated and no progression is observed, up to twelve injections may be given in each patient.
  • OBP-301
  • Pembrolizumab

Eligibility Criteria

        Inclusion Criteria:

          -  Be willing and able to provide written informed consent/assent 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 head and neck squamous cell
             cancer with cutaneous, subcutaneous or nodal tumors deemed as injectable lesions [see
             definition below] and have measurable disease for the primary study endpoint of
             overall response rate by RECIST 1.1 and iRECIST.In addition they must have (A) A
             single measurable tumor at least 1 cm in size and amenable to intratumoral injection
             or (B) Multiple measurable tumors that in aggregate have a longest diameter of ≥ 10 mm

        Note: Injectable lesion definitions: lesions amenable to percutaneous approach, if
        technically feasible

          -  Recurrent and inoperable tumor, progressing after prior radiation with curative-intent
             for advanced disease (adjuvant or definitive with or without chemotherapy or
             cetuximab). No prior treatment for local regional recurrence (LRR).

          -  Tumors may be either HPV+ or HPV-.

          -  Tumor must be PD-L1 positive, defined as CPS ≥ 1.

          -  Be willing to provide tissue; newly obtained 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
                  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:

          -  Is currently participating and receiving study therapy or has participated in a study
             of an investigational agent and received study therapy within 2 weeks (chemotherapy,
             small molecule), or 3 weeks (antibody) 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 the equivalent of prednisone 20 mg/day) or any other form of immunosuppressive
             therapy within 7 days prior to study Day 1. Daily dose of maintenance prednisone 10mg
             or equivalent is allowable.

          -  Has known active central nervous system metastases and/or carcinomatous meningitis.

          -  Has a known additional malignancy that is progressing or requires active treatment,
             with the exception of stable/low grade tumors that are not expected to influence
             life-expectancy (e.g. skin SCC, basal cell, differentiated thyroid cancer, prostate
             cancer on hormonal therapy).

          -  Has received a live vaccine within 30 days of planned start of study therapy.

          -  Has a known history of Human Immunodeficiency Virus.

          -  Has known active Hepatitis B or Hepatitis C.

          -  Has known history of, or any evidence of active, non-infectious pneumonitis.

          -  Has an active infection requiring systemic therapy.

          -  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.

          -  Prior intolerance related to severe (>=grade 3) irAE to a prior anti-immune checkpoint
             inhibitor agent leading to discontinuation of anti-immune checkpoint inhibitor
             therapy.

          -  Any disorder or condition, or any medication that would put the patient at risk from
             bleeding after direct tumor injection.

          -  Not a candidate for SBRT given for potentially curative intent. All tumors must
             receive SBRT. For example, patients with locoregional neck recurrence without
             significant overlap with the previous radiation field, and who do not warrant SBRT for
             re-irradiation as per the treating radiation oncologist (e.g. out-of-field
             recurrence), will not be included in the study.

          -  Received prior immunotherapy with checkpoint inhibitors or other immunotherapy agents.
      
Maximum Eligible Age:N/A
Minimum Eligible Age:18 Years
Eligible Gender:All
Healthy Volunteers:No

Primary Outcome Measures

Measure:Overall response rate, as assessed by radiographic imaging
Time Frame:30 months
Safety Issue:
Description:Examination of patients with a partial response or complete response.

Secondary Outcome Measures

Measure:Disease control rate, as assessed by radiographic imaging
Time Frame:6 months
Safety Issue:
Description:Examination of subjects with stable disease, a partial response, or complete response.
Measure:Overall Survival, as measured by the rate of survival in patients
Time Frame:30 months
Safety Issue:
Description:Defined as the time from registration to death from any cause.
Measure:Progression free survival, as assessed by radiographic imaging and survival.
Time Frame:30 months
Safety Issue:
Description:Defined as the time from registration to cancer progression or death due to any cause
Measure:Duration of response (DoR), as measured by subjects who have responded to combination therapy remain without disease progression
Time Frame:30 months
Safety Issue:
Description:defined as the percentage of patients who have achieved complete response, partial response and stable disease.
Measure:Immune related Response Rate (irRR), as assessed by radiographic imaging
Time Frame:30 months
Safety Issue:
Description:Examination of subjects with stable disease, a partial response, or complete response.Immune-related disease progression (irPD) will be confirmed if the increase in tumor burden is ≥ 25% relative to nadir (minimum recorded tumor burden).
Measure:Response in non-target lesions, as assessed by radiographic imaging
Time Frame:30 months
Safety Issue:
Description:Examination of patients with a partial response or complete response based on RECIST 1.1 and iRECIST

Details

Phase:Phase 2
Primary Purpose:Interventional
Overall Status:Recruiting
Lead Sponsor:Weill Medical College of Cornell University

Trial Keywords

  • Head and Neck
  • Recurrent
  • Cure
  • Unresectable
  • Immunotherapy
  • Oncolytic Virus
  • SBRT
  • Intratumoral injection

Last Updated

March 25, 2021