A Study to Learn About How Different Amounts of the Study Medicine PF-07826390 Act in the Body of People With Cancer When Taken Alone or With Other Anti-cancer Medicines.

Phase 1TerminatedNCT06546553

Pfizer9 enrolled

Overview

The purpose of this study is to learn about the: * safety (the effect of the study medicine on the participant's body), * effects of the study medicine alone or in combination with sasanlimab - * the best amount of the study medicine. This study is seeking participants who have solid tumors (An abnormal mass of tissue) that: * have advanced (cancer that does not disappear or stay away with treatment) or * are metastatic (has spread to other parts of the body). This includes (but limited to) the following cancer types: * Non-Small Cell Lung Cancer (NSCLC): It's a type of lung cancer where the cells grow slowly but often spread to other parts of the body. * Colorectal Cancer (CRC): This is a disease where cells in the colon or rectum grow out of control. * Renal Cell Carcinoma (RCC): This is a cancer that starts in the kidney. All participants in this study will receive the study medication (PF-07826390) as an IV infusion (given directly into a vein) at the study once every four weeks in 28 day cycles. The study participants depending on the group enrolled in, will receive the study medication (PF-07826390 alone or in combination with other anti-cancer medications (sasanlimab). Sasanlimab is given as a shot under the skin every 4 weeks. Participants can continue to take the study medication (PF-07826390) until their cancer is no longer responding. Participants who are taking sasanlimab may receive it for up to 2 years. The study will look at the experiences of people receiving the study medicines. This will help see if the study medicines are safe and effective. Participants will be involved in this study for up to 4 years. During this time, participants will have a study visit every week. The participants after stopping the study medicine (at about 2 years) will be followed for another two years to see how the participants are doing.

Study Type

INTERVENTIONAL

Allocation

NON_RANDOMIZED

Purpose

TREATMENT

Masking

NONE

Enrollment

Interventions

PF-07826390DRUG

PF-07826390 is a novel, fully humanized bispecific IgG1 that targets the leukocyte immunoglobulin-like receptor, LILRB1 and LILRB2 (B1 and B2) cell-surface receptors

sasanlimabBIOLOGICAL

A monoclonal antibody that blocks the interaction between PD-1 and PD-L1/L2

SOC (anti-PD-1 + platinum -based chemo)OTHER

Standard of Care (anti-PD-1 + platinum -based chemo)

Eligibility

Sex: ALLMin age: 18 Years

Medical Language ↔ Plain English

Inclusion Criteria: * Histological or cytological diagnosis of advanced, unresectable, and/or metastatic or relapsed/refractory solid tumor * Part 1A: Participants with solid tumors where anti-PD-(L)1 is an established treatment. Participants must have progressed on or following prior anti-PD-(L)1 therapy if approved, available, tolerable, and eligible * Part 1B: Participants either meeting Part 1A criterion, or participants with "cold" solid tumors where anti-PD-(L)1 therapy is not an established treatment * Part 2: Participants with NSCLC (2A Arm 1 and 2B) must have received platinum-based chemotherapy and anti-PD-(L)1 or have intolerability to or refusal of standard therapies. Participants with NSCLC who have not been previously treated with a prior anti-pd-(L) will be enrolled in Part 2C. * Participants with MSS CRC (Part 2A Arm 2) must have received fluoropyrimidine-, oxaliplatin, and irinotecan-based chemotherapy, an anti-VEGF agent and anti-EGFR inhibitor (if RAS wildtype) and/or other molecularly targeted therapy if appropriate. Participants with RCC (Part 2A Arm 3) must have received prior tyrosine kinase inhibitor (TKI), anti-PD-(L)1 (if not receiving anti-PD-1 on protocol), anti-CTLA-4 (optional), hypoxia-inducible factor 2 alpha (HIF2a) inhibitor, or mTOR inhibitor or have documented intolerance to the standard therapy. * At least 1 measurable lesion based on RECIST 1.1 that has not been previously irradiated (Part 1 exceptions permitted after review and approval) * Able to provide pre-treatment (and optional on-treatment) tumor tissue Exclusion Criteria: * Treatment with any systemic anticancer therapy within 4 weeks or 5 half-lives (whichever is shorter) prior to planned first dose * Active or history of clinically significant autoimmune disease or other medical condition that required chronic systemic immunosuppressive therapy within recent 2 years * Prior treatment with another LILRB1 (ILT2), LILRB2 (ILT4), and/or LILRB1/2 (B1 and B2) antagonist antibodies or pathway targeting agents, including HLA conformers and HLA-G antibodies. * Lack of adequate organ (bone marrow, renal, liver) function * History of severe immune-mediated adverse event or cytokine release syndrome that was considered related to prior immune modulatory therapy that required immunosuppressive therapy

Locations (7)

Beverly Hills Cancer Center

Beverly Hills, California, United States

Florida Cancer Specialists

Orlando, Florida, United States

Sarah Cannon Research Institute at Florida Cancer Specialists

Orlando, Florida, United States

START Midwest

Grand Rapids, Michigan, United States

START San Antonio

San Antonio, Texas, United States

START Mountain Region

West Valley City, Utah, United States

Virginia Cancer Specialists

Fairfax, Virginia, United States

Outcomes

Primary Outcomes

PART 1: Number of participants with Dose-limiting toxicities (DLT)

Any of the prespecified AEs that are attributable to one, the other, or both study treatments, occurring in the DLT observation period are considered DLTs, excluding toxicities clearly due to underlying disease or extraneous causes.

Time frame: First cycle, Day 1 up to Day 28

PART 1 & 2: Incidence of Adverse Events (AE)s

An adverse event (AE) is any untoward medical occurrence in a participant who received study medication without regard to possibility of causal relationship to it. SAE is an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/ incapacity; congenital anomaly. AEs included both serious and all non-serious AEs.

Time frame: From start of the treatment and up to 90 days after last dose or start of new anticancer therapy, whichever occurred first.

PART 1 & 2: Number of participants with laboratory abnormalities

Number of participants with laboratory test abnormalities. Laboratory test parameters included hematology, coagulation, liver function, renal function, electrolytes, clinical chemistry, and urinalysis (dipstick and microscopy).

Time frame: From start of the treatment and up to 90 days after last dose or start of new anticancer therapy, whichever occurred first.

Part 2: Objective Response - Number of Participants With Objective Response

Percentage of participants with objective response-based assessment of complete response (CR) or partial response (PR) according to Response Evaluation Criteria in Solid Tumors (RECIST v1.1) assessed by the Investigator.

Time frame: Baseline and every 8 to 12 weeks through time of confirmed disease progression, death, unacceptable toxicity, or through study completion, approximately 2 years.

Secondary Outcomes

Objective Response - Number of Participants with Objective Response

Time frame: Baseline and every 8 to 12 weeks through time of confirmed disease progression, death, unacceptable toxicity, or through study completion, approximately 2 years

Time to event endpoints: duration of response (DOR) by RECIST v1.1

Time to event: DOR according to Response Evaluation Criteria in Solid Tumors (RECIST v1.1) as assessed by the Investigator.

Time frame: Baseline to confirmed disease progression, up to 2 years after the last dose of study treatment

Time to event endpoints: progression-free survival (PFS) by RECIST v1.1

Time to event: PFS according to Response Evaluation Criteria in Solid Tumors (RECIST v1.1) as assessed by the Investigator.

Time frame: Baseline to confirmed disease progression, up to 2 years after the last dose of study treatment

Part 1: Maximum Observed Serum Concentration (Cmax)

Cycle 1: Pre-dose, 1, 4, 8, 24, 48, 168, 336 and 504 hours post dose. Cycle 2: Pre-dose and 336 hours post dose. Cycle 3: Pre-dose, 1, 4, 24, 168 and 336 hours post dose. Cycle 3 and beyond Pre-dose only.