GSK’s Phase II, Single-Arm Trial For Jemperli In Rectal Cancer Gets Panel Nod

Oncologic Drugs Advisory Committee members generally agreed with GSK that a randomized study in dMMR/MSI-H patients would not be feasible; despite the favorable vote, panelists still raised concerns about use of 12-month clinical complete response as the primary endpoint.

Plane taking off
GSK's plan for accelerated approval based on single-arm studies was cleared for takeoff by ODAC. • Source: Shutterstock

GSK plc’s proposal for use of single-arm trials to support accelerated approval of Jemperli (dostarlimab-gxly) in locally advanced rectal cancer gained backing from a majority of a US Food and Drug Administration advisory committee members on 9 February, despite reservations about the proposed primary endpoint.

Eight of the 13 members of the Oncologic Drugs Advisory Committee said a proposed single-arm, multicenter, Phase II study, in addition to an ongoing single-arm study at Memorial Sloan Kettering Cancer Center, would be sufficient to characterize the PD-1 inhibitor’s benefits and risks in

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