GSK posts positive interim results for Jemperli in rectal cancer

13 July 2026

UK pharma major GSK (LSE: GSK) today announced positive interim results from the registrational phase II AZUR-1 trial of Jemperli (dostarlimab) in patients with stage II/III mismatch repair deficient/microsatellite instability-high (dMMR/MSI-H) locally advanced rectal cancer.

The single arm trial met its primary objective, showing a meaningful and sustained clinical complete response rate at 12 months (cCR12).

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