" class="no-js "lang="en-US"> FDA Approves Jemperli for the Treatment of Endometrial Cancer
Tuesday, April 23, 2024

U.S. FDA Grants Regular Approval for Jemperli for the Treatment of Patients with Recurrent or Advanced Mismatch Repair-deficient Endometrial Cancer

GSK reports that the US Food and Drug Administration (FDA) granted full approval for Jemperli (dostarlimab-gxly) for the treatment of adult patients with mismatch repair-deficient (dMMR) recurrent or advanced endometrial cancer, as determined by a US FDA-approved test, that has progressed on or following a prior platinum-containing regimen in any setting and are not candidates for curative surgery or radiation.

Hesham Abdullah, Senior Vice President, Global Head of Oncology Development, GSK, said: “This US regulatory action confirms our confidence in Jemperli as an important treatment option for patients with dMMR recurrent or advanced endometrial cancer. We continue to unlock the potential of Jemperli as the backbone for our immuno-oncology development programs to address the unmet needs of patients, including earlier lines of endometrial cancer and other solid tumors.”

In April 2021, Jemperli received accelerated approval for the treatment of adult patients with dMMR recurrent or advanced endometrial cancer that had progressed on or following prior treatment with a platinum-containing regimen.

This approval is based on additional data collected from the A1 expansion cohort of the ongoing GARNET trial, a phase I, multicenter, open-label, single-arm study of Jemperli monotherapy in patients with advanced or recurrent solid tumors. Cohort A1 evaluated the efficacy of Jemperli in 141 patients with dMMR advanced or recurrent endometrial cancer that has progressed on or following prior treatment with a platinum-containing regimen. The major efficacy outcome measures were overall response rate (ORR) and duration of response (DOR) as assessed by a blinded independent central review according to RECIST v1.1. Confirmed ORR was 45.4% (95% CI: 37.0, 54.0), with a 15.6% complete response rate and a 29.8% partial response rate. Median DOR was not reached (range: 1.2+, 52.8+ months), measured from the time of first response, with 85.9% of patients having duration ≥12 months and 54.7% of patients having duration ≥24 months. Median follow-up for duration of response was 27.9 months.

Treatment-related adverse events were consistent with previous analyses for cohort A1. The most common adverse reactions (≥20%) were fatigue/asthenia, anemia, rash, nausea, diarrhea, constipation, and vomiting. The most common Grade 3 or 4 adverse reactions (≥2%) were anemia, increased transaminases, urinary tract infection, fatigue/asthenia, and diarrhea.

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