Novo Nordisk Halts Phase III Concizumab Hemophilia Trials After Three Thrombotic Events

No new patients will be enrolled, and trial participants will stop treatment with the tissue factor pathway inhibitor antibody, a class with four prior suspended hemophilia programs.

Hand above a red emergency button
Novo Nordisk halted three studies, including two Phase III trials • Source: Shutterstock

Novo Nordisk AS has halted one Phase II and two Phase III clinical trials for concizumab, a monoclonal antibody targeting tissue factor pathway inhibitor (TFPI) in the treatment of hemophilia A and B, due to non-fatal adverse thrombotic events observed in three patients in the Phase III program. Development of at least four other drug candidates designed to inhibit TFPI have been suspended to date, but so far Novo Nordisk has not decided to discontinue concizumab development entirely.

The Danish company said on 16 March that it has stopped enrolling patients in the trials and noted that treatment will be discontinued for individuals already enrolled in the studies

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