A Study of PF-07260437 in Advanced or Metastatic Solid Tumors

NCT ID: NCT05067972

Last Updated: 2025-05-06

Study Results

Results available

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Basic Information

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Recruitment Status

TERMINATED

Clinical Phase

PHASE1

Total Enrollment

30 participants

Study Classification

INTERVENTIONAL

Study Start Date

2021-10-07

Study Completion Date

2023-10-17

Brief Summary

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A study to evaluate the safety, tolerability, pharmacokinetics (PK), pharmacodynamics (PD), and antitumor activity of PF-07260437, a B7-H4 x CD3 bispecific mAb, in participants aged ≥18 years of age with advanced or metastatic breast cancer, ovarian cancer or endometrial cancer. Adult participants with other advanced or metastatic high B7-H4 expressing tumors may be considered after discussion with and approval from sponsor.

Detailed Description

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Conditions

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Ovarian Neoplasms Endometrial Neoplasms Breast Neoplasms

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

SEQUENTIAL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Monotherapy dose escalation (Part 1)

Participants will receive PF-07260437

Group Type EXPERIMENTAL

PF-07260437

Intervention Type DRUG

B7-H4 x CD3 bi-specific mAb

Dose Expansion (Part 2A) - Tumor specific Arm A

Participants will receive PF-07260437

Group Type EXPERIMENTAL

PF-07260437

Intervention Type DRUG

B7-H4 x CD3 bi-specific mAb

B7-H4 IHC

Intervention Type DIAGNOSTIC_TEST

B7-H4 expression

Dose Expansion (Part 2B) - Tumor specific Arm B

Participants will receive PF-07260437

Group Type EXPERIMENTAL

PF-07260437

Intervention Type DRUG

B7-H4 x CD3 bi-specific mAb

B7-H4 IHC

Intervention Type DIAGNOSTIC_TEST

B7-H4 expression

Dose Expansion (Part 2C) - Tumor specific Arm C

Participants will receive PF07260437

Group Type EXPERIMENTAL

PF-07260437

Intervention Type DRUG

B7-H4 x CD3 bi-specific mAb

B7-H4 IHC

Intervention Type DIAGNOSTIC_TEST

B7-H4 expression

Interventions

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PF-07260437

B7-H4 x CD3 bi-specific mAb

Intervention Type DRUG

B7-H4 IHC

B7-H4 expression

Intervention Type DIAGNOSTIC_TEST

Other Intervention Names

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B7-H4

Eligibility Criteria

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Inclusion Criteria

* Part 1: Histological/cytological diagnosis of selected locally advanced or metastatic breast cancer, endometrial cancer and ovarian cancer
* Part 2A:In second line or more, participants with histological/cytological diagnosis of locally advanced or metastatic HR+ HER2- breast cancer showing high B7-H4 expression
* Part 2B: In second line or more participants with histological or cytological diagnosis of locally advance or metastatic HR+ Her2- breast cancer or triple negative breast cancer (TNBC) with no biomarker pre-selection
* Part 2C: In second line or more participants with histological diagnosis of locally advance or metastatic triple negative breast cancer with high B7-H4 expression
* Thyroid function within normal laboratory range; in participants with abnormal thyroid function if Free T4 is normal and participant is clinically euthyroid, participants is eligible

Exclusion Criteria

* Participants with any active malignancy within 3 years prior to enrollment
* Participants with advanced/metastatic, symptomatic, visceral spread, that are at risk of life-threatening complications in the short term (including participants with massive uncontrolled effusions \[pleural, pericardial, peritoneal\], pulmonary lymphangitis, and over 50% liver involvement).
* History of Grade ≥3 immune mediated adverse events (including liver function tests that where considered drug related and cytokine release syndrome) that was considered related to prior immune modulatory therapy (eg, immune checkpoint inhibitors, co stimulatory agents, etc.) and required immunosuppressive therapy within 1 year of treatment.
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Pfizer

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Pfizer CT.gov Call Center

Role: STUDY_DIRECTOR

Pfizer

Locations

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City of Hope (City of Hope National Medical Center, City of Hope Medical Center)

Duarte, California, United States

Site Status

Moffitt Cancer Center at McKinley Campus

Tampa, Florida, United States

Site Status

Moffitt Cancer Center

Tampa, Florida, United States

Site Status

University of Chicago Medical Center

Chicago, Illinois, United States

Site Status

University of Chicago Comprehensive Cancer Center at Silver Cross Hospital

New Lenox, Illinois, United States

Site Status

The University of Chicago Medicine Center of Advanced Care Orland Park

Orland Park, Illinois, United States

Site Status

Montefiore Einstein Center for Cancer Care

The Bronx, New York, United States

Site Status

NEXT Oncology

San Antonio, Texas, United States

Site Status

Swedish Cancer Institute Edmonds Campus

Edmonds, Washington, United States

Site Status

Swedish Cancer Institute

Seattle, Washington, United States

Site Status

Fred Hutchinson Cancer Center

Seattle, Washington, United States

Site Status

University of Washington Medical Center - Mountlake

Seattle, Washington, United States

Site Status

Pan American Center for Oncology Trials, LLC

Rio Piedras, , Puerto Rico

Site Status

Pan American Center for Oncology Trials- Hospital Oncologico

Rio Piedras, , Puerto Rico

Site Status

Pan American Center for Oncology Trials

Rio Piedras, , Puerto Rico

Site Status

Countries

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United States Puerto Rico

Provided Documents

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Document Type: Study Protocol

View Document

Document Type: Statistical Analysis Plan

View Document

Related Links

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https://pmiform.com/clinical-trial-info-request?StudyID=C4431001

To obtain contact information for a study center near you, click here.

Other Identifiers

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C4431001

Identifier Type: -

Identifier Source: org_study_id

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