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Old drug, new hope: atovaquone tested against tough ovarian cancer

NCT ID NCT05998135

Disease control Sponsor: Emory University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
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 Results may not be published yet.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
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This status has not been confirmed recently, so it may be out of date.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 26, 2026 · Last updated Jun 26, 2026

Summary

This phase II trial tests whether atovaquone, a drug currently used to treat certain infections, can help control platinum-resistant ovarian cancer. The study enrolls 28 patients whose cancer has progressed within six months of their last platinum-based chemotherapy. Participants will take atovaquone by mouth and undergo regular scans and biopsies to see if the drug slows tumor growth.

What this could mean

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

Active substance
atovaquone
What this could lead to
If it works, this could offer a new treatment option for ovarian cancer that has stopped responding to standard platinum chemotherapy.
What could go wrong
This is a small, early-phase trial with only 28 participants. The drug is being tested for a new purpose, so it may not work against cancer, and side effects are not yet fully known.

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 2

Tests whether the treatment actually works, and watches for side effects, in a larger group.

Participants

About 28 people

The number the study aims to enrol. It can still change while the study runs.

Started

Nov 2023

Expected to finish

Jun 2027

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.

Ages

18 years and older

Sex

Female participants only

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: * Patients with platinum-resistant, high-grade serous ovarian cancer, defined as disease progression within six months of completion of their last platinum-based chemotherapy * Patients must maintain Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1 * There will be no limitations on number of prior lines of therapy * Trial is open to non-English speaking patients * Trial is open to patients referred from community practice Exclusion Criteria: * Patients who are \< 18 years old * Patients who are pregnant or breastfeeding (due to cancer of their reproductive organs, patients enrolled in the trial are unable to conceive) * Patients who are incarcerated * Patients who are unable to provide consent / lack decision-making capacity

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Conditions

The condition(s) this trial relates to.

ovarian carcinoma ovarian serous adenocarcinoma refractory malignant neoplasm

As listed by the trial registrant

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

Ovarian high grade serous adenocarcinoma Platinum-resistant ovarian carcinoma

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Emory University Hospital/Winship Cancer Institute

    RECRUITING

    Atlanta, Georgia, 30322, United States

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