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Ovarian CancerFebruary 2022Summary reviewed June 2026

What the GOG 281/LOGS Trial Found — Trametinib for Low-Grade Ovarian Cancer

Researchers tested trametinib, a pill that blocks cancer growth signals, against standard treatments in 260 people with low-grade ovarian cancer that had returned. People taking trametinib went nearly twice as long without their cancer worsening—13 months compared to 7 months.

What the trial was testing

The GOG 281/LOGS enrolled 260 patients with ovarian cancer. The study was sponsored by National Cancer Institute (NCI) and tracked outcomes across the full group of patients who matched the trial's eligibility profile.

It was mid-stage testing (phase 2/3). Trials at this stage are designed to produce evidence regulators and physicians can act on — not just observations to follow up later.

What the results showed

Patients taking trametinib went 13 months without cancer progression versus 7 months with standard treatments.

Lancet (London, England) · 2022 · NCT02101788

These findings — that time without cancer worsening nearly doubled with trametinib — were published in the Lancet (London, England) and represent the headline result of the study.

Researchers tracked outcomes across 260 patients enrolled in the trial. The result was consistent enough across the group that the team felt confident reporting it.

What this means for patients

For patients with ovarian cancer, this result changes the calculus on what to ask their care team about. Whether it changes day-to-day care depends on factors like disease subtype, prior treatments, and where the patient is in their care journey.

What you can do now

Trametinib is FDA-approved for this type of ovarian cancer and is now considered a standard treatment option. If you have low-grade serous ovarian cancer that has come back after prior treatment, ask your oncologist whether trametinib might be right for you.

Eligibility for the treatments mentioned above depends on specific test results and clinical history. Bring this summary, the trial name, and your most recent labs or pathology report to your next visit.