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

Jemperli®▼(dostarlimab) with platinum-based chemotherapy to be made available on the NHS for all eligible patients in England for first-line treatment of primary advanced or recurrent endometrial cancer

November 25, 2025 – Drug Delivery, Other, Pharmaceutical – GSK, NHS, NICE, endometrial cancer, oncology

Jemperli (dostarlimab) with platinum-based chemotherapy to be made available on the NHS for all eligible patients in England for first-line treatment of primary advanced or recurrent endometrial cancer
Following a positive recommendation from the National Institute for Health and Care Excellence (NICE), eligible patients living with primary advanced or recurrent endometrial cancer with mismatch repair proficiency or microsatellite stability in England will now have access to treatment with dostarlimab on the NHS
There are approximately 8,200 cases of endometrial cancer diagnosed annually in England, with around 20% diagnosed with primary advanced endometrial cancer and around 13% who experience disease recurrence after first treatment
Despite advances in medical science, outcomes for advanced endometrial cancer remain extremely poor, with only approximately 17% of women diagnosed with distant metastases surviving to five years.

25 November 2025 — London, UK — GSK plc today announced that the National Institute for Health and Care Excellence (NICE) has issued final guidance recommending the use of Jemperli (dostarlimab) with platinum-based chemotherapy for first-line treatment of primary advanced or recurrent endometrial cancer with mismatch repair proficiency or microsatellite stability. In England, there are 8,200 cases of endometrial cancer annually, with mismatch repair proficient (MMRp)/microsatellite stable (MSS) tumours approximately accounting for 3 out of every 4 cases (72%). Today’s approval broadens the previous NICE recommendation for dostarlimab across England, where more patients living with primary advanced or recurrent endometrial cancer may now be eligible for dostarlimab as a first-line treatment option.

Based on Part 1 of the RUBY phase III clinical trial, dostarlimab in combination with chemotherapy significantly improved median overall survival (OS) in the overall population of the trial to 44.6 months compared to 28.2 months for chemotherapy alone, demonstrating a 31% reduction in risk of death (HR: 0.69; 95% CI: 0.54–0.89 p=0.002). The study population of Part 1 of the RUBY trial reflected the target primary advanced or recurrent endometrial cancer patient group, with approximately 76% being diagnosed with mismatch repair proficient or microsatellite stable (MMRp/MSS) disease.

Dr Eleanor Jones, Specialist Registrar in Obstetrics and Gynaecology and Chair of Trustees of Peaches Womb Cancer Trust said: “Today’s decision is very welcome news for patients living in England. This news will mean that all eligible patients with primary advanced or recurrent endometrial cancer will now have the option of this additional treatment, where previously only some did. There are very few effective cancer treatment options for people with primary advanced and recurrent endometrial cancer, so access to this innovative first-line treatment fills an unmet need.

Peaches Womb Cancer Trust has welcomed the opportunity to contribute to appraisals of dostarlimab. We could not have done so without the contributions of Peaches Patient Voices, a group of people affected by womb cancer whose powerful testimonies and experiences informed our submissions.”
Endometrial cancer, which starts in the lining of the womb (endometrium), is the most common gynaecological cancer in the UK.viii Since 1990, there has been around a 60% increase in incidence, largely due to lifestyle factors, such as obesity and an ageing population. Despite advances in medical science, the prognosis for people diagnosed with advanced stage endometrial cancer is extremely poor. The median overall survival of women with recurrent endometrial cancer is reported to be less than 12 months, with approximately 17% of women diagnosed at late stage with distant metastases surviving to five years.

The Medicines and Healthcare products Regulatory Agency (MHRA) extended the licence of dostarlimab to patients living with primary advanced or recurrent endometrial cancer with mismatch repair proficiency or microsatellite stability (MMRp/MSS) in December 2024. Until then it was licensed for patients with mismatch repair deficient (dMMR) or microsatellite instability-high (MSI-H) endometrial cancer.

Antoine Herbaux, Vice President, Head of Oncology UK, GSK, said: “At GSK, we aspire to get ahead of cancer through innovation that transforms outcomes. NICE’s decision to expand access to dostarlimab in combination with chemotherapy for first-line treatment to patients with primary advanced or recurrent endometrial cancer with mismatch repair proficiency or microsatellite stability, represents an important milestone for endometrial cancer care in England. We are proud to deliver a therapy that offers proven survival benefit and remain committed to working with health authorities to ensure timely access for all eligible patients.”

Following the NICE decision, GSK is working with relevant health authorities in Wales and Northern Ireland to ensure expanded access for more patients across the United Kingdom in this first-line setting. GSK is now collaborating with stakeholders to provide access to patients in Scotland and has submitted a dossier to the Scottish Medicines Consortium (SMC) in preparation for appraisal. Dostarlimab in combination with platinum-containing chemotherapy has already been accessible in England for the treatment of adult patients with mismatch repair deficient (dMMR)/ microsatellite instability-high (MSI-H) primary advanced or recurrent endometrial cancer who are candidates for systemic therapy since March 2024.

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