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New cancer drug trial halted early – what happened?

NCT ID NCT06685068

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
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early This study
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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Jul 14, 2026 · Updated 2 times

Summary

This study tested a new drug, GEN1286, in 23 adults with advanced solid tumors that had spread or could not be removed by surgery. The goal was to check the drug's safety and see if it could shrink tumors. The trial was stopped early, so results are limited.

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.

Phase

Phase 1/2

Runs two stages together: safety and dose first, then whether the treatment works.

Participants

23 people

The number who actually took part.

Started

Nov 2024

Finished

Mar 2026

Lead sponsor

A company

The lead sponsor is a pharmaceutical, biotech, or medical-device company.

Who can take part

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

Ages

18 years and older

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.

Key Inclusion Criteria: * Participants must be ≥ 18 years of age at the time of informed consent; have measurable disease according to RECIST 1.1; Eastern Cooperative Oncology Group (ECOG) performance status (PS) score of 0 or 1; adequate organ, bone marrow, liver, coagulation, and renal function; and be willing to provide a pretreatment tumor specimen. * All participants must have pathologically confirmed diagnosis of advanced solid tumor. * Participants must have metastatic or unresectable locally advanced, recurrent disease not amenable to further local therapy and must have previously received therapies known to confer clinical benefit (unless ineligible to receive, refused to receive, or therapy is unavailable in the region). Key Exclusion Criteria: \- Prior treatment with topoisomerase 1-based antibody-drug conjugate (ADC) therapy. Note: Other protocol-defined inclusion and exclusion criteria may apply.

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

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

Contacts and locations

Locations

  • Massachusetts General Hospital

    Boston, Massachusetts, 02114, United States

  • START Midwest

    Grand Rapids, Michigan, 49546, United States

  • START Mountain Region

    West Valley City, Utah, 84119, United States

  • START San Antonio

    San Antonio, Texas, 78229, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.