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Scientists dig into tumor DNA to crack immunotherapy resistance

NCT ID NCT03291028

Knowledge-focused Sponsor: Fox Chase Cancer Center Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing This study
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study examines stored tumor samples from 15 people with kidney or bladder cancer who initially responded to immune checkpoint therapy but later developed new tumors. Researchers will compare the genetic and tissue features of the original and new tumors to understand how the cancer escaped the immune attack. The goal is to uncover clues about resistance, which could guide future treatments.

What this could mean

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

What this could lead to
If successful, this research could reveal why some cancers stop responding to immunotherapy, pointing toward new ways to overcome resistance.
What could go wrong
This is a small, observational study (15 participants) that only looks at stored tumor samples. It will not directly test any new treatment, and findings may not apply to all patients.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

15 people

The number who actually took part.

Started

Nov 2017

Expected to finish

Dec 2026

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

RCC and UC patients who were treated with ICB but developed metastatis post-treatment that was resected

Ages

Children (under 18), adults (18 to 64) and older adults (65 and over)

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Eligible patients will include retrospectively identified patients with RCC or UC who have received treatment with ICB and achieved clinical benefit but subsequently developed a solitary new/progressive lesion that was removed surgically. Patients with other tumor types who otherwise meet criteria may be included at a later time * Additionally, a group of patients with RCC who have undergone a metastasectomy but who did not receive treatment with ICB will be identified. These patients may be approached for study participation to serve as a comparator group Exclusion Criteria: \-

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Conditions

The condition(s) this trial relates to.

renal cell carcinoma transitional cell carcinoma ureter cancer urethra cancer Urethral Neoplasms urinary bladder carcinoma Urinary Bladder Neoplasms urothelial carcinoma

As listed by the trial registrant

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

Bladder cancer Renal cell carcinoma Ureter cancer Urethral cancer Urothelial carcinoma

Contacts and locations

Locations

  • Fox Chase Cancer Center - Philadelphia

    Philadelphia, Pennsylvania, 19111-2497, United States

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