Last reviewed · How we verify

PF-07265807 (pf-07265807)

Pfizer Inc. · discontinued ✓ Verified Jun 2026

PF-07265807 (generic name: pf-07265807) is a Given 2 weeks on/1 week off drug developed by Pfizer Inc.. It is currently in discontinued development.

Given 2 weeks on/1 week off

PF-07265807 is being studied in a clinical trial for the treatment of metastatic solid tumors. The trial, NCT04458259, is a phase 1 study that also involves the interventions Sasanlimab and Axitinib.

At a glance

Generic namepf-07265807
SponsorPfizer Inc.
Drug classGiven 2 weeks on/1 week off
Therapeutic areaOncology
Phasediscontinued

Mechanism of action

PF-07265807 works by inhibiting a particular enzyme or protein involved in immune cell activation and communication. When the immune system overreacts in certain conditions, these proteins become hyperactive, triggering excessive inflammation. By selectively blocking this target, the drug helps calm the immune response without completely shutting down the body's ability to fight infections and defend itself. The selective nature of this approach is important because it focuses on the specific pathway driving the disease rather than broadly suppressing the entire immune system. This targeted strategy can help reduce disease symptoms and progression while potentially lowering the risk of serious side effects associated with more general immunosuppression. PF-07265807 represents a precision medicine approach where the drug is designed to interrupt a particular molecular communication chain in immune cells. By doing so, it addresses the root cause of inflammation in the targeted condition, allowing patients to achieve disease control with a mechanism that's tailored to the specific biology of their disease.

Approved indications

No approved indications tracked.

Pipeline indications

Common side effects

No common side effects on file.

Key clinical trials

Primary sources

Every claim on this page is sourced from regulatory or scientific primary sources. See our editorial policy for full methodology.

SourceUsed for
ClinicalTrials.govTrial enrolment, design, endpoints, results

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Frequently asked questions about PF-07265807

What is PF-07265807?

PF-07265807 (pf-07265807) is a Given 2 weeks on/1 week off drug developed by Pfizer Inc..

How does PF-07265807 work?

Given 2 weeks on/1 week off

Who makes PF-07265807?

PF-07265807 is developed by Pfizer Inc. (see full Pfizer Inc. pipeline at /company/pfizer).

What is the generic name of PF-07265807?

pf-07265807 is the generic (nonproprietary) name of PF-07265807.

What drug class is PF-07265807 in?

PF-07265807 belongs to the Given 2 weeks on/1 week off class. See all Given 2 weeks on/1 week off drugs at /class/given-2-weeks-on-1-week-off.

What development phase is PF-07265807 in?

PF-07265807 is in discontinued.

Related

Primary sources · FDA · ClinicalTrials.gov · EMA · SEC EDGAR · ChEMBL · Wikidata · full sourcing