Can a skin cream make immunotherapy more effective?

NCT ID NCT05481658

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This early-stage trial tests whether a topical cream called diphencyprone (DPCP) can help standard immunotherapy work better in people with advanced cancer that has spread to the skin. About 100 participants will apply DPCP twice a week for 12 weeks alongside their usual PD-1 or PD-L1 inhibitor treatment. The main goals are to check safety and to see how the cream changes immune activity in the skin tumors.

What this could mean

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

Active substance

Diphencyprone (DPCP) topical cream

What this could lead to

If successful, this could point toward a way to make immunotherapy work better for people with skin metastases from advanced cancer.

What could go wrong

This is a very early Phase I trial with only 100 participants, focused on safety and immune markers, not on curing the cancer. The combination may cause skin reactions or other side effects, and it is unknown if it will improve outcomes.

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.

metastatic malignant neoplasm

As listed by the trial registrant

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

Contacts and locations

Study contacts

  • Contact

    Phone: •••-•••-•••• Email: •••••@•••••

Locations

  • Icahn School of Medicine at Mount Sinai

    RECRUITING

    New York, New York, 10029, United States

    Contact