Pfizer's new cancer combo shows early promise but trial halted

NCT ID NCT06285097

First seen Jun 26, 2026 · Last updated Jun 26, 2026 · Updated 1 time

Summary

This early-stage trial tested a new drug, PF-07820435, alone or with another immunotherapy (sasanlimab) in 9 people with advanced solid tumors like lung, skin, or kidney cancer. The main goals were to check safety and find the right dose. The study was terminated early, so results are limited.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance

PF-07820435 (immune agonist) and sasanlimab (PD-1 blocker)

What this could lead to

If it works, this could point toward a new treatment option for advanced solid tumors like lung or skin cancer.

What could go wrong

This is a very early Phase 1 trial with only 9 participants, now terminated. It was designed to find safe doses, not to prove effectiveness. Many early cancer drugs fail to show benefit.

Disclaimer Read more

This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.

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Conditions

The condition(s) this trial relates to.

colorectal carcinoma colorectal neoplasm head and neck squamous cell carcinoma melanoma neoplasm non-small cell lung carcinoma ovarian cancer ovarian carcinoma renal cell carcinoma Squamous Cell Carcinoma of Head and Neck transitional cell carcinoma urothelial carcinoma

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Contacts and locations

Locations

  • Corewell Health (reference non-engagement letter)

    Grand Rapids, Michigan, 49503, United States

  • Florida Cancer Specialists Sarasota Drug Development Unit

    Sarasota, Florida, 34232, United States

  • Hospital Oncologico Dr. Isaac Gonzalez-Martinez

    Rio Piedras, 00935, Puerto Rico

  • National Cancer Center Hospital East

    Kashiwa, Chiba, 277-8577, Japan

  • Pan American Center for Oncology Trials, LLC

    Rio Piedras, 00935, Puerto Rico

  • SCRI Oncology Partners

    Nashville, Tennessee, 37203, United States

  • START Midwest

    Grand Rapids, Michigan, 49546, United States

  • Sarah Cannon Research Institute - Pharmacy

    Nashville, Tennessee, 37203, United States

  • The Cancer Institute Hospital of JFCR

    Koto, Tokyo, 135-8550, Japan

  • Tristar Centennial Medical Center

    Nashville, Tennessee, 37203, United States