A Phase 1/2 Safety Study of Intratumorally Dosed INT230-6 (IT-01)

A Phase 1/2 Safety Study of Intratumorally Administered INT230-6 in Adult Subjects With Advanced Refractory Cancers

This study evaluates the intratumoral administration of escalating doses of a novel, experimental drug, INT230-6. The study is being conducted in patients with several types of refractory cancers including those at the surface of the skin (breast, squamous cell, head and neck) and tumors within the body such (pancreatic, colon, liver, lung, etc.). Sponsor also plans to test INT230-6 in combination with anti-PD-1 and anti-CTLA-4 antibodies.

Study Overview

• Status: Completed
• Conditions: Sarcoma; Lymphoma; Breast Cancer; Head and Neck Cancer; Pancreatic Cancer; Lung Cancer; Bile Duct Cancer; Colon Cancer; Liver Cancer; Squamous Cell Carcinoma; Chordoma of Sacrum
• Intervention / Treatment: Drug: INT230-6; Biological: anti-PD-1 antibody; Biological: anti-CTLA-4 antibody

Detailed Description

INT230-6 is comprised of a 3 agents in a fixed ratio - a cell permeation enhancer and two, potent anti-cancer payloads (cisplatin and vinblastine sulfate). The penetration enhancer facilitates dispersion of the two drugs throughout injected tumors and enables increased diffusion into cancer cells. (Nonclinical safety studies showed no findings following drug injection into healthy tissues.)

Historically physicians administer the two active drugs comprising INT230-6 by intravenous (IV) infusion to achieve a systemic blood level at the limit of tolerability. The objective is destroy both visible tumors and unseen circulating cancer cells (micro-metastases). Unfortunately, dosing drugs IV delivers only a small amount with a low concentration at the tumor site. This approach especially for late stage cancers is not highly effective and often quite toxic to the patient.

Attempts at direct intratumoral injection with chemotherapeutic agents have not shown the ability to treat the injected tumor, non-injected tumors or micro-metastases. This lack of efficacy for local administration is due possibly to poor dispersion and a lack of cell uptake of the agents.

Due to the use of the novel cell penetration enhancing agent INT230-6 treatment demonstrates strong efficacy in animals having large tumors. The Sponsor's in vivo, non-clinical data shows that INT230-6 thoroughly saturates and kills injected tumors. In addition, the drug induces an adaptive (T-cell mediated) immune response that attacks not only the injected tumor, but non-injected tumors and unseen micro-metastases. Cured animals become permanently immunized against the type of cancer that INT230-6 eliminates.

Clinical trial IT-01 seeks to determine the safety and potential efficacy of dosing INT230-6 directly into several different types of cancers. In addition animal studies showed a strong synergy of INT230-6 with immune modulation agents. Thus as part of study IT-01 the Sponsor seeks to understand the safety and efficacy of INT230-6 when administered in combination with immuno-therapeutic agents such as antibodies that target Programmed Cell Death (PD-1 or anti-PD-1) and Cytotoxic T-Lymphocyte Associated Protein 4 (CTLA-4 or anti-CTLA-4) receptors.

This study seeks to understand whether tumor regression can be achieved and patient outcomes improved.

• Study Type: Interventional
• Enrollment (Actual): 110
• Phase: Phase 2; Phase 1

Contacts and Locations

Study Locations

• Canada
  • Ontario
    • Toronto, Ontario, Canada, M5G 1Z5
      • Princess Margaret Cancer Center - University Health Network
• United States
  • California
    • Los Angeles, California, United States, 90033
      • USC Norris
    • Newport Beach, California, United States, 92663
      • USC HOAG
  • Maryland
    • Baltimore, Maryland, United States, 21205
      • Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins
  • Massachusetts
    • Worcester, Massachusetts, United States, 01655
      • UMass Memorial Medical Center
  • New York
    • New York, New York, United States, 10032
      • Columbia University Medical Center
  • Pennsylvania
    • Philadelphia, Pennsylvania, United States, 19111-2497
      • Fox Chase Cancer Center
  • Texas
    • Houston, Texas, United States, 77030
      • Center for Oncology and Blood Disorders

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

INT230-6 monotherapy Cohorts EC2 and EC3, combination with Keytruda cohort DEC2 and combination with Yervoy cohort FEC. Where criteria diverge the DEC2 and FEC specific criteria will be noted.

1. The participant (or legally acceptable representative if applicable) provides written informed consent for the trial.
2. Men and Women > 18 years of age on the day of signing consent.
3. Have an Eastern Cooperative Oncology Group (ECOG) performance status < 2; (for pembrolizumab and ipilimumab combinations please see supplements DEC/DEC2 and FEC for ECOG criteria).
4. Populations: INT230-6 will be injected into deep or superficial tumors for subjects with histologically or cytologically confirmed advanced or metastatic cancers; (for pembrolizumab and ipilimumab combinations please see supplements DEC/DEC2 and FEC for Populations).
5. Includes subjects with loco-regional disease that have relapsed/recurred within 6 months of chemo-radiation and who have no standard of care.

6. Subjects with metastatic disease who have failed one or more approved standard therapies, or have no alternate approved therapy available. Failure of all approved therapies that have a modest or marginal impact on survival is not required as long as the treating physician believes that treatment on study is appropriate for the subject and documents that the subject elects to defer the approved therapies.

   Note: There is no limit on the number of prior therapies that a patient (subject) may have received prior to enrollment in any cohort.

7. Subjects must have measurable disease by iRECIST 1.1 criteria including one target tumor for injection by the local site investigator/radiology. Superficial tumors must have one tumor greater than or equal to 1.0 cm, deep tumors greater than or equal to 1.0 cm (as measured by caliper (for non-injected tumors only) or image guidance). Lesions situated in a previously irradiated area are considered measurable if progression has been demonstrated in such lesions.
8. Subjects must have a minimum of one injectable lesion as determined by the investigator (for superficial tumors) or radiologist (deep tumors).

9. Prior chemotherapy or immunotherapy (tumor vaccine, cytokine, or growth factor given to control the cancer: systemic or IT) must have been completed at least 4 weeks prior to dosing (with the exception of kinase inhibitors or other short half-life drugs, a 2 week washout is acceptable prior to treatment) and all adverse events have either returned to baseline or stabilized.

   Note: Subjects who have received prior platinum therapy are eligible irrespective of their response.

10. Prior systemic radiation therapy (either IV, intrahepatic or oral) completed at least 4 weeks prior to study drug administration; (for ipilimumab combination please see supplement FEC exclusion criteria).
11. Prior focal radiotherapy completed at least 2 weeks prior to study drug administration.
12. Prior major treatment-related surgery completed at least 4 weeks prior to study drug administration.
13. No prior primary or metastatic brain or meningeal tumors unless clinically and radiographically stable as well as off steroid therapy for at least 2 months.
14. Life expectancy ≥8 weeks; (for ipilimumab combination please see supplement FEC inclusion criteria).

15. A female participant is eligible to participate if she is not pregnant, not breastfeeding, and at least one of the following conditions applies:

    1. Not a woman of childbearing potential (WOCBP)
    2. A WOCBP subject who may become pregnant or who are sexually active with a partner and who could become pregnant agrees to use an effective form of barrier contraception during the study and for at least 180 days in monotherapy; (for pembrolizumab and ipilimumab combinations please see supplements DEC/DEC2 and FEC for pregnancy criteria). (Male subjects must agree to use contraception and refrain from sperm donation during the study for 180 days after administration of study drug.)

16. Have adequate organ function as defined by the below screening laboratory values that must meet the following criteria:

    1. WBC ≥2000/μL (≥2 x 109/L).
    2. Neutrophils ≥1000/μL (≥1 x 109/L); (for pembrolizumab and ipilimumab combinations please see supplements DEC/DEC2 and FEC for neutrophil criteria).
    3. For subjects with planned superficial only injections: PT, PTT/aPTT, and INR ≤1.5 × ULN, Platelets ≥70x103/μL (≥ 70 x 109/L), Hemoglobin ≥8 g/dL
    4. Creatinine within the institution's laboratory upper limit of normal or calculated creatinine clearance >50 ml/min; (for pembrolizumab combination please see supplements DEC/DEC2 for creatine criteria).
    5. ALT (SGOT)/AST (SGPT) ≤2.5 x ULN without, and ≤ 5 x ULN with hepatic metastases.
    6. Bilirubin ≤2 x ULN (except subjects with Gilbert's syndrome, who must have total bilirubin <3.0 mg/dL (<52 µmol/L); (for pembrolizumab and ipilimumab combinations please see supplements DEC/DEC2 and FEC for bilirubin criteria).

    7. For subjects with planned deep tumor injections: PT, PTT/aPPT, and INR within normal limits; Platelet count ≥100,000/μL; hemoglobin ≥ 9 g/dL.

       Note: ALT (SGPT) =alanine aminotransferase (serum glutamic pyruvic transaminase); AST (SGOT) =aspartate aminotransferase (serum glutamic oxaloacetic transaminase); ULN=upper limit of normal.

       1 Criteria must be met without erythropoietin dependency and without packed red blood cell (pRBC) transfusion within last 2 weeks.

17. Additional criteria for combination arms can be found in the appropriate combination protocol supplements. Refer to the Investigative site for details.

    Additional Inclusion Criteria for DEC2 cohort (anti-PD1 combination, Keytruda (pembrolizumab)) Population: Subjects with histologically or cytologically confirmed advanced or metastatic Pancreatic, Cholangiocarcinoma, non-MSI-H and/or MMR proficient colorectal cancer, and Squamous Cell Carcinoma tumors.

    Additional Inclusion Criteria for FEC cohort (anti-CTLA-4 combination, Yervoy (ipilimumab)) Population: Subjects with histologically or cytologically confirmed advanced or metastatic Hepatocellular carcinoma (HCC), breast cancer regardless of histology (BC) or soft tissue sarcoma

    NOTE: DEC and FEC combination cohorts have additional Inclusion Criteria - refer to the Investigative site for details.

    Exclusion Criteria:

    For INT230-6 Monotherapy cohort EC3, cohort DEC2-Keytruda combination and cohort FEC-Yervoy combination

    Subjects who exhibit any of the following conditions at screening will not be eligible for admission into the study:

18. History of severe hypersensitivity reactions to cisplatin or vinblastine or other products of the same class.
19. Other prior malignancy, except for adequately treated basal or squamous cell skin cancer or superficial bladder cancer, or any other cancer from which the subject has been disease-free for at least 2 years.
20. Subjects with tumors >15 cm (in longest diameter). Treatment plan for subjects with tumors that are 9 to15 cm must be discussed with and approved by the medical monitor.
21. Underlying medical condition that, in the Principal Investigator's opinion, will make the administration of study drug hazardous or obscure the interpretation of toxicity determination or adverse events.
22. Concurrent medical condition requiring the use of immunosuppressive medications, or systemic corticosteroids (topical steroids are permitted); systemic corticosteroids must be discontinued at least 4 weeks prior to dosing. Inhaled or intranasal corticosteroids (with minimal systemic absorption) may be continued if the subject is on a stable dose. Non-absorbed intra-articular steroid injections will be permitted; or use of other investigational drugs (drugs not marketed for any indication) within 30 days prior to study drug administration. Use of steroids as prophylactic treatment for subjects with contrast allergies to diagnostic imaging contrast dyes will be permitted.
23. For deep tumor cohorts, subjects who require uninterrupted anticoagulants of any type, on daily aspirin therapy or NSAIAs.
24. Use of other investigational drugs (drugs not marketed for any indication) within 28 days prior to study drug administration.

Pregnancy Exclusion:

A WOCBP who has a positive urine pregnancy test (e.g., within 72 hours) prior to treatment. If the urine test is positive or cannot be confirmed as negative, a serum pregnancy test will be required

NOTE: DEC or FEC combination cohorts have additional Exclusion criteria. Refer to the Investigative site for details.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Non-Randomized
• Interventional Model: Sequential Assignment
• Masking: None (Open Label)

Number of Arms

9

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Cohort A; INT230-6 injections every 28 days for 5 sessions into only superficial tumors, low starting dose, low concentration per tumor. Completed	Drug: INT230-6; INT230-6 is clear sterile solution administered by injection directly into the tumor to be treated. The product contains a cell permeation agent with cisplatin and vinblastine sulfate at fixed concentrations. The drug is stored frozen and must be dosed at room temperature. The drug dose to be administered is set by the tumor volume of the target lesions - not the subject's body surface area
Experimental: Cohort B1; INT230-6 injections every 28 days for 5 sessions into deep tumors, low starting dose, low drug concentration per tumor Completed	Drug: INT230-6; INT230-6 is clear sterile solution administered by injection directly into the tumor to be treated. The product contains a cell permeation agent with cisplatin and vinblastine sulfate at fixed concentrations. The drug is stored frozen and must be dosed at room temperature. The drug dose to be administered is set by the tumor volume of the target lesions - not the subject's body surface area
Experimental: Cohort EA; INT230-6 injections every 2 weeks for 5 sessions into superficial tumors, medium starting dose, low drug concentration per tumor Completed	Drug: INT230-6; INT230-6 is clear sterile solution administered by injection directly into the tumor to be treated. The product contains a cell permeation agent with cisplatin and vinblastine sulfate at fixed concentrations. The drug is stored frozen and must be dosed at room temperature. The drug dose to be administered is set by the tumor volume of the target lesions - not the subject's body surface area
Experimental: Cohort EC; INT230-6 injections every 2 weeks for 5 sessions into superficial or deep tumors, moderately high starting dose, high drug concentration per tumor Completed	Drug: INT230-6; INT230-6 is clear sterile solution administered by injection directly into the tumor to be treated. The product contains a cell permeation agent with cisplatin and vinblastine sulfate at fixed concentrations. The drug is stored frozen and must be dosed at room temperature. The drug dose to be administered is set by the tumor volume of the target lesions - not the subject's body surface area
Experimental: Cohort EC2; INT230-6 injections every 2 weeks for 5 sessions into superficial or deep tumors, high starting dose, moderate drug concentration per tumor, higher number of tumors to be treated per session than EC Completed	Drug: INT230-6; INT230-6 is clear sterile solution administered by injection directly into the tumor to be treated. The product contains a cell permeation agent with cisplatin and vinblastine sulfate at fixed concentrations. The drug is stored frozen and must be dosed at room temperature. The drug dose to be administered is set by the tumor volume of the target lesions - not the subject's body surface area
Experimental: Cohort DEC: Safety with INT230-6; INT230-6 injections every 2 weeks for 5 sessions with the possibility for INT230-6 retreatment into superficial tumors, with addition of anti-PD-1 antibody Keytruda (pembrolizumab) dosed concurrently starting at Day 1 every 3 weeks for two years for selected cancer types. Completed	Drug: INT230-6; INT230-6 is clear sterile solution administered by injection directly into the tumor to be treated. The product contains a cell permeation agent with cisplatin and vinblastine sulfate at fixed concentrations. The drug is stored frozen and must be dosed at room temperature. The drug dose to be administered is set by the tumor volume of the target lesions - not the subject's body surface area; Biological: anti-PD-1 antibody; The anti-PD-1 antibody will be added concomitantly with INT230-6 as noted in cohort DEC and DEC2; Other Names: Keytruda; MK-3475; pembrolizumab
Experimental: EC3: INT230-6 monotherapy fixed maximal dose; INT230-6 injections every 2 weeks for 5 sessions at fixed maximal dose into superficial or deep tumors, unlimited number of tumors to be treated per session with retreatment once every 9 weeks for two years. Completed	Drug: INT230-6; INT230-6 is clear sterile solution administered by injection directly into the tumor to be treated. The product contains a cell permeation agent with cisplatin and vinblastine sulfate at fixed concentrations. The drug is stored frozen and must be dosed at room temperature. The drug dose to be administered is set by the tumor volume of the target lesions - not the subject's body surface area
Experimental: DEC2: INT230-6 combined with pembrolizumab; INT230-6 per the dosing of cohort EC3 combined with Keytruda (pembrolizumab) dosed per DEC concurrently starting at Day 1 for selected cancers. Completed	Drug: INT230-6; INT230-6 is clear sterile solution administered by injection directly into the tumor to be treated. The product contains a cell permeation agent with cisplatin and vinblastine sulfate at fixed concentrations. The drug is stored frozen and must be dosed at room temperature. The drug dose to be administered is set by the tumor volume of the target lesions - not the subject's body surface area; Biological: anti-PD-1 antibody; The anti-PD-1 antibody will be added concomitantly with INT230-6 as noted in cohort DEC and DEC2; Other Names: Keytruda; MK-3475; pembrolizumab
Experimental: FEC: INT230-6 combined with ipilimumab; INT230-6 per the EC3 regimen combined with Yervoy (ipilimumab) dosed concurrently starting at Day 1 every 3 weeks for four treatments for selected cancer types. Completed	Biological: anti-CTLA-4 antibody; The anti-CTLA-4 antibody will be added concomitantly with INT230-6 as noted in cohort FEC; Other Names: BMS-734016; Yervoy; ipilimumab

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Rate and severity of treatment-emergent adverse events ≥ grade 3 attributed to study drug using the NCI Common Terminology Criteria for Adverse Events (CTCAE v.4.03) (Scale 1 to 5)	The primary objective is to assess the safety and tolerability of single and multiple intratumoral doses of INT230-6 in subjects with advanced or recurrent malignancies. This will be assessed by the rate of ≥ grade 3 AE's attributed to INT230-6 and not the underlying disease. All recorded adverse events will be listed and tabulated by system organ class, preferred term, and dose and coded according to the most current version of MedDRA. The incidence of adverse events will be tabulated and reviewed for potential significance and clinical importance. Adverse Events will be summarized for all reported data and by study period: a) up to and including 28 days post last dose of initial treatment, and b) from first dose of re-initiation of treatment, for subjects who re-initiate study therapy while in follow-up, up to 28 days post-dose of the last re-treatment dose.	Up to 5 years

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Preliminary Efficacy: Control or Regression of Injected Tumors by Measurement of Length, Width and Height (in centimeters) Radio-graphically Using Computer Tomography or Magnetic Resonance Imaging to Calculate Tumor Volumes (cubic centimeters) Over Time.	Assess the preliminary efficacy of INT230-6 by measuring the disease control rate (CR+PR+SD) as assessed by iRECIST. Assess INT230-6's effect on tumors by measuring the length, width and height (centimeters) of injected tumors during the dosing and afterward.	Up to 5 years
Determine pharmacokinetic parameter Peak Plasma (Cmax in ng/mL) of each of the 3 main components of INT230-6.	Characterize the peak plasma profile for the three INT230-6 components after single and then multiple IT tumor site injections for safety purposes. This has been completed.	Up to 4 years
Determine key pharmacokinetic parameter, Area Under the Curve (AUC) (ng*hr/mL) of each of the 3 main components of INT230-6.	Characterize the pharmacokinetic AUC profile of each of the three INT230-6 components for AUC after single IT tumor site injection for safety purposes. This has been completed.	Up to 4 years
Key pharmacokinetic parameters, half live (hours) of each of the 3 main components of INT230-6.	Characterize the half life of each of the three INT230-6 components after single and multiple IT tumor site injections for safety purposes. This has been completed.	Up to 4 years

Other Outcome Measures

Outcome Measure	Measure Description	Time Frame
Exploratory: Control or Regression of Non Injected Tumors by Measurement of Length (in centimeters) Radio-graphically Using Computer Tomography or Magnetic Resonance Imaging.	Characterize response in non-injected lesions (up to 5) using length (cm) as the key parameter for measurement.	Up to 18 months
Exploratory: Blood, Genetic and Tissue Biomarker Identification from cell flow phenotyping, tissue analysis, genetic SNP analysis.	Evaluate various tumor and anti-tumor immune response biomarkers from blood, tumor tissue that may correlate with tumor response. Flow and tissue panels may include Live-Dead, CD3, CD4, CD8, FoxP3, Ki-67, ICOS, DAPI, PD-1, LAG-3, TIM-3, CTLA-4 and analysis of blood serum cytokine such as Th1/Th2, IFN-γ, IL-1β, IL-2, IL-4, IL-6, IL-8, IL-10, IL-12 p70, IL-13, and TNF-α.	Up to 2 months
Exploratory: Overall Subject Outcome	Evaluate overall response by iRECIST including survival	Up to 3 years

Collaborators and Investigators

• Sponsor: Intensity Therapeutics, Inc.
• Collaborators: Bristol-Myers Squibb; Merck Sharp & Dohme LLC

Study record dates

Study Major Dates

• Study Start (Actual): February 9, 2017
• Primary Completion (Actual): February 22, 2023
• Study Completion (Actual): February 22, 2023

Study Registration Dates

• First Submitted: February 10, 2017
• First Submitted That Met QC Criteria: February 15, 2017
• First Posted (Actual): February 20, 2017

Study Record Updates

• Last Update Posted (Actual): March 2, 2023
• Last Update Submitted That Met QC Criteria: February 28, 2023
• Last Verified: February 1, 2023

More Information

Terms related to this study

• Keywords: Carcinoma; Cisplatin; Pembrolizumab; Ipilimumab; Dose escalation; Platinum; PD-1; Keytruda; Vinblastine; Malignancy; Neoplasm; Intratumoral; CTLA-4; Yervoy; Intralesional; anti-PD-1 antibodies; Immuno therapy; Intensity Therapeutics; INT230-6; Vinca; Keynote A10; CA184-592
• Additional Relevant MeSH Terms: Digestive System Diseases; Neoplasms by Histologic Type; Neoplasms; Neoplasms by Site; Adenocarcinoma; Carcinoma; Neoplasms, Glandular and Epithelial; Digestive System Neoplasms; Neoplasms, Germ Cell and Embryonal; Biliary Tract Diseases; Bile Duct Diseases; Biliary Tract Neoplasms; Cholangiocarcinoma; Chordoma; Bile Duct Neoplasms; Physiological Effects of Drugs; Molecular Mechanisms of Pharmacological Action; Antineoplastic Agents; Immunologic Factors; Antineoplastic Agents, Immunological; Immune Checkpoint Inhibitors; Antibodies; Immunoglobulins; Pembrolizumab; Ipilimumab
• Other Study ID Numbers: IT-01; KEYNOTE KN-A10 (Other Identifier: Merck Sharp & Dohme Corp); CA184-592 (Other Identifier: Bristol Myers Squibb Company)

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: Yes
• Studies a U.S. FDA-regulated device product: No