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A Phase 1a/1b FIH Study of PY159 and in Combination With Pembrolizumab in Subjects With Advanced Solid Tumors

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ClinicalTrials.gov Identifier: NCT04682431
Recruitment Status : Recruiting
First Posted : December 23, 2020
Last Update Posted : October 6, 2021
Sponsor:
Collaborator:
Gilead Sciences
Information provided by (Responsible Party):
Pionyr Immunotherapeutics Inc.

Brief Summary:
This is an open-label, multicenter, First-In-Human (FIH), Phase 1a/1b study of PY159 in subjects with locally advanced (unresectable) and/or metastatic solid tumors that are refractory or relapsed to Standard Of Care (including Checkpoint Inhibitors, if approved for that indication).

Condition or disease Intervention/treatment Phase
Advanced Solid Tumor Drug: PY159 Single agent dose level 1 Drug: PY159 Single agent dose level 2 Drug: PY159 Single agent dose level 3 Drug: PY159 Single agent dose level 4 Drug: PY159 Single agent dose level 5 Drug: PY159 Single agent dose level 6 Drug: PY159 Single agent dose level 7 Drug: PY159/Pembrolizumab Combination dose level 1 Drug: PY159/Pembrolizumab Combination dose level 2 Drug: PY159/Pembrolizumab Combination dose level 3 Drug: PY159/Pembrolizumab Combination dose level 4 Drug: PY159/Pembrolizumab Combination dose level 5 Drug: PY159 Single agent dose expansion cohorts Drug: PY159/Pembrolizumab Combination dose expansion cohorts Phase 1

Detailed Description:
Part A: Dose escalation of PY159 alone and in combination with pembrolizumab in a standard 3+3 design Part B: Dose expansion of one or more dose levels of PY159 administered alone and in combination with pembrolizumab for predefined tumor histology

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Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 298 participants
Allocation: Non-Randomized
Intervention Model: Sequential Assignment
Intervention Model Description: Part A: Dose escalation of PY159 alone and in combination with pembrolizumab in a standard 3+3 design; Part B: Dose expansion of one or more dose levels of PY159 administered alone and in combination with pembrolizumab for predefined tumor histology
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: A Phase 1a/1b Open-Label Study to Evaluate the Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of PY159 as a Single Agent and In Combination With Pembrolizumab in Subjects With Advanced Solid Tumors
Actual Study Start Date : November 10, 2020
Estimated Primary Completion Date : April 7, 2023
Estimated Study Completion Date : April 7, 2023

Resource links provided by the National Library of Medicine


Arm Intervention/treatment
Experimental: Part A: PY159 Single agent dose level 1
PY159 dose level 1 IV administration, Q3 weekly until consent withdrawal, intolerable toxicity or investigator decision.
Drug: PY159 Single agent dose level 1
Dose of PY159 as a single agent given in a standard 3+3 design.
Other Name: PY159

Experimental: Part A: PY159 Single agent dose level 2
PY159 dose level 2
Drug: PY159 Single agent dose level 2
Dose of PY159 as a single agent given in a standard 3+3 design.
Other Name: PY159

Experimental: Part A: PY159 single agent dose level 3
PY159 dose level 3
Drug: PY159 Single agent dose level 3
Dose of PY159 as a single agent given in a standard 3+3 design.
Other Name: PY159

Experimental: Part A: PY159 single agent dose level 4
PY159 dose level 4
Drug: PY159 Single agent dose level 4
Dose of PY159 as a single agent given in a standard 3+3 design.
Other Name: PY159

Experimental: Part A: PY159 single agent dose level 5
PY159 dose level 5
Drug: PY159 Single agent dose level 5
Dose of PY159 as a single agent given in a standard 3+3 design.
Other Name: PY159

Experimental: Part A: PY159 single agent dose level 6
PY159 dose level 6
Drug: PY159 Single agent dose level 6
Dose of PY159 as a single agent given in a standard 3+3 design.
Other Name: PY159

Experimental: Part A: PY159 single agent dose level 7
PY159 dose level 7
Drug: PY159 Single agent dose level 7
Dose of PY159 as a single agent given in a standard 3+3 design.
Other Name: PY159

Experimental: Part A: PY159/Pembrolizumab Combination dose level 1
PY159 dose level 1 in combination with pembrolizumab
Drug: PY159/Pembrolizumab Combination dose level 1
Dose of PY159 and given in combination with pembrolizumab
Other Names:
  • PY159
  • Pembrolizumab

Experimental: Part A: PY159/Pembrolizumab Combination dose level 2
PY159 dose level 2 in combination with pembrolizumab
Drug: PY159/Pembrolizumab Combination dose level 2
Dose of PY159 and given in combination with pembrolizumab
Other Names:
  • PY159
  • Pembrolizumab

Experimental: Part A: PY159/Pembrolizumab Combination dose level 3
PY159 dose level 3 in combination with pembrolizumab
Drug: PY159/Pembrolizumab Combination dose level 3
Dose of PY159 and given in combination with pembrolizumab
Other Names:
  • PY159
  • Pembrolizumab

Experimental: Part A: PY159/Pembrolizumab Combination dose level 4
PY159 dose level 4 in combination with pembrolizumab
Drug: PY159/Pembrolizumab Combination dose level 4
Dose of PY159 and given in combination with pembrolizumab
Other Names:
  • PY159
  • Pembrolizumab

Experimental: Part A: PY159/Pembrolizumab Combination dose level 5
PY159 dose level 5 in combination with pembrolizumab
Drug: PY159/Pembrolizumab Combination dose level 5
Dose of PY159 and given in combination with pembrolizumab
Other Names:
  • PY159
  • Pembrolizumab

Experimental: PY159 Part B: Single agent dose expansion cohort(s)
PY159 Single agent dose expansion cohort(s)
Drug: PY159 Single agent dose expansion cohorts
Dose of PY159 as a single agent given for predefined tumor histology
Other Name: PY159

Experimental: PY159 Part B: PY159/Pembrolizumab Combination dose expansion cohort(s)
PY159 in combination with pembrolizumab dose expansion cohort(s)
Drug: PY159/Pembrolizumab Combination dose expansion cohorts
Dose of PY159 as a single agent and in combination with pembrolizumab for predefined tumor histology
Other Names:
  • PY159
  • Pembrolizumab




Primary Outcome Measures :
  1. Incidence of Adverse Events (AE) [ Time Frame: 36 months ]
    Adverse Events will be summarized by MedDRA system organ class and preferred term. Separate tabulations will be produced for all treatment emergent AEs, treatment related AEs, Serious Adverse Events (SAEs), discontinuations due to AEs, and AEs of at least NCI CTCAE grade 3 severity.

  2. Dose Limiting Toxicity of PY159 [ Time Frame: 21 days ]
    Evaluation of dose-limiting toxicity (DLT).


Secondary Outcome Measures :
  1. Measure PY159 concentration at the end of infusion (CEOI) [ Time Frame: 36 months ]
    Measure PY159 concentration at the end of infusion (CEOI) after the first dose.

  2. Measure PY159 maximum concentration (Cmax) [ Time Frame: 36 months ]
    Measure PY159 maximum concentration (Cmax) at various time points during Cycle 1. All subjects who received at least 1 dose of PY159 and have at least 1 measured concentration at a scheduled pharmacokinetics (PK) time point after start of dosing.

  3. Measure PY159 concentration at the trough level (Ctrough) [ Time Frame: 36 months ]
    Measure PY159 concentration at the trough level (Ctrough). All subjects who received at least 1 dose of PY159 and have at least 1 measured concentration at a scheduled PK time point after start of dosing.

  4. Measure PY159 Area under the curve (AUC)0-t [ Time Frame: 36 months ]
    Measure PY159 Area under the curve (AUC)0-t. All subjects who received at least 1 dose of PY159 and have at least 1 measured concentration at a scheduled PK time point after start of dosing for at least 1 PK analyte.

  5. Measure PY159 half-life (T1/2) [ Time Frame: 36 months ]
    Measure PY159 half-life (T1/2). All subjects who received at least 1 dose of PY159 and have at least 1 measured concentration at a scheduled PK time point after start of dosing for at least 1 PK analyte.

  6. Measure PY159 Clearance (CL) [ Time Frame: 36 months ]
    Measure PY159 Clearance (CL). All subjects who received at least 1 dose of PY159 and have at least 1 measured concentration at a scheduled PK time point after start of dosing for at least 1 PK analyte.

  7. Measure PY159 Volume at Steady State (Vss) [ Time Frame: 36 months ]
    Measure PY159 Volume at Steady State (Vss). All subjects who received at least 1 dose of PY159 and have at least 1 measured concentration at a scheduled PK time point after start of dosing for at least 1 PK analyte.

  8. Incidence of Anti-Drug Antibody (ADA) formation to PY159 [ Time Frame: 36 months ]
    To evaluate the incidence of anti-drug antibody (ADA) formation to PY159

  9. Determining PY159 time to maximum concentration (Tmax) [ Time Frame: 36 months ]
    Determining PY159 time to maximum concentration (Tmax) during Cycle 1.

  10. Objective response rate (ORR) [ Time Frame: 36 months ]
    The incidents of ORR is defined as either a complete or partial response (PR) per RECIST. Subjects with no baseline data will be considered no responders. ORR will be summarized by dose, tumor type, and overall. ORR will be summarized descriptively.

  11. Clinical Benefit Rate (CBR) [ Time Frame: 36 months ]
    Defined as the percentage of subjects who have achieved complete response (CR), partial response (PR) and stable disease (SD).

  12. Duration of response (DOR) [ Time Frame: 36 months ]
    DOR will be calculated to determine durability. DOR will be measured from the time by which the criteria for CR or PR-whichever is recorded first-are met until the first date by which recurrent or progressive disease is objectively documented. DOR will be assessed using KAPLAN-MEIER methods.


Other Outcome Measures:
  1. Progress free survival (PFS) [ Time Frame: 36 months ]
    PFS will be measure from entry onto the study until disease progression or death from any cause. PFS will be assessed using KAPLAN-MEIER methods.

  2. Overall survival (OS) [ Time Frame: 36 months ]
    The duration of overall survival (OS) will be measured from the time of first study drug administration until the date of death. OS will be assessed using KAPLAN-MEIER methods.



Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.


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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Criteria

KEY ELIGIBILITY CRITERIA Inclusion Criteria

  • Adults ≥18 years of age at the time of study consent
  • Subjects with any of the following eligible solid tumor diagnoses as confirmed by cytology or histology. Escalation Cohorts (Part A): Subjects with solid tumors from pre-specified tumor types:

    • head and neck [squamous cell carcinoma, salivary gland, thyroid],
    • gynecologic [including ovarian, endometrial, cervical, uterine, vaginal, vulvar],
    • pancreatic [adenocarcinoma],
    • lung [adenocarcinoma and squamous cell carcinoma] who are recurrent or refractory to platinum-based chemotherapy in addition to prior treatment with CPI Programmed Cell Death-1 (PD-1)/Programmed Cell Death-Ligand 1 (PD-L1) or who give informed consent to forego such therapy,
    • gastric and esophagogastric junction adenocarcinomas [MSI low and CPI refractory MSI high],
    • breast [TNBC and HR+, HER2-] with metastatic disease that is relapsed or refractory to at least one line of metastatic therapy (including a CPI-either alone or in combination, if approved for that indication, and not eligible for other targeted therapies specific for their tumor type).
  • Subjects must provide an original, diagnostic tumor sample to determine TREM1 expression (sites have verified source and availability of archival tissue during screening). For Part A subjects without an archival tissue sample will only be eligible if they choose and consent to provide a CNB of a primary or metastatic lesion.
  • Subjects must have documented disease progression that include prior treatment with a CPI (alone or in combination), if approved for that indication.
  • Measurable disease by RECIST 1.1.
  • All acute toxic effects of any prior antitumor therapy, including immunotherapy, have resolved to Grade < 2 before the start of study drug dosing (except for alopecia or peripheral neuropathy which may be Grade <2 or medication controlled thyroid replacement therapy).
  • Eastern Cooperative Oncology Group (ECOG) Performance Status (PS) ≤ 2.

Exclusion Criteria

  • Subject is a candidate for molecularly targeted therapy (e.g., drugs targeting EGFR, ALK, ROS-1, NTRK, MET, RET, and BRAF V600E, Her2). Applies to enrolled subjects on both Part A and Part B of the study.
  • History of autoimmune disorder requiring ongoing or intermittent disease-modifying therapy.
  • Untreated and/or uncontrolled brain metastases Stable treated or asymptomatic brain metastases (for at least 3 months prior to enrollment may be enrolled. Subjects with stable treated or asymptomatic brain metastases receiving glucocorticoids must be on a stable dose [≤ 2 mg/day of dexamethasone or an equivalent glucocorticoid] for a minimum of 3 months prior to enrollment.)
  • Uncontrolled intercurrent illness including, but not limited to, active or chronic bleeding event within 28 days prior to first dose of study drug or psychiatric illness/social situation that would limit compliance with study requirements as judged by treating physician.
  • Decompensated liver disease as evidenced by hepatic encephalopathy or coagulopathy.
  • Active angina or Class III or IV Congestive Heart Failure (CHF) (NYHA CHF Functional Classification System) or clinically significant cardiac disease within 12 months of first dose. of study drug, including MI, unstable angina, Grade 2 or greater peripheral vascular disease, uncontrolled HTN, or arrhythmias not controlled by medication.
  • Any anti-cancer therapy, including small molecules, immunotherapy, chemotherapy, monoclonal antibody therapy (with the exception of bone-modifying agents as supportive care), radiotherapy or any other agents to treat cancer within 14-21 days (dependent upon the agent) of first dose of study drug. Subjects with a prior history of prostate cancer on LHRH agonist are eligible provided they have no evidence of metastatic disease.

Note: Other protocol defined Inclusion/Exclusion criteria may apply.


Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT04682431


Contacts
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Contact: Denise Deegan 650-825-6140 ddeegan@pionyrtx.com
Contact: Marc Chamberlain, MD 650-825-6140 mchamberlain@pionyrtx.com

Locations
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United States, Colorado
University of Colorado Recruiting
Aurora, Colorado, United States, 80045
United States, Connecticut
Smilow Cancer Hospital at Yale New Haven Recruiting
New Haven, Connecticut, United States, 06511
United States, Michigan
Karmanos Cancer Institute Recruiting
Detroit, Michigan, United States, 48201
United States, Oregon
Oregon Health and Science University Recruiting
Portland, Oregon, United States, 97239
United States, Texas
Mary Crowley Cancer Center Recruiting
Dallas, Texas, United States, 75230
Start South Texas Accelerated Research Therapeutic Recruiting
San Antonio, Texas, United States, 78229
Sponsors and Collaborators
Pionyr Immunotherapeutics Inc.
Gilead Sciences
Investigators
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Study Director: Lynnae Jackson Pionyr Immunotherapuetics, Inc.
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Responsible Party: Pionyr Immunotherapeutics Inc.
ClinicalTrials.gov Identifier: NCT04682431    
Other Study ID Numbers: PY159-2-01
First Posted: December 23, 2020    Key Record Dates
Last Update Posted: October 6, 2021
Last Verified: September 2021
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: No

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Studies a U.S. FDA-regulated Drug Product: Yes
Studies a U.S. FDA-regulated Device Product: No
Additional relevant MeSH terms:
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Neoplasms
Pembrolizumab
Antineoplastic Agents, Immunological
Antineoplastic Agents