TB-403 in paediatric brain tumours - development in collaboration with Oncurious, subsidiary of ThromboGenics

TB-403 is a humanised antibody directed against the PlGF protein, which is believed to inhibit its signaling via the Nrp-1 receptor. PlGF is expressed in certain paediatric cancers including medulloblastoma, Ewing’s sarcoma, neuroblastoma and alveolar rhabdomyosarcoma.

TB-403 is currently in a Phase I/II study for the treatment of patients with medulloblastoma in cooperation with a US based pediatric oncology network, Beat Childhood Cancer. The study progresses and the second dose level is ongoing.

TB-403 has received Orphan Drug Designation for medulloblastoma from the European Medicines Agency.

TB-403 is being developed in collaboration with Oncurious, a subsidiary of ThromboGenics. In July 2017, BioInvent’s ownership in TB-403 increased from 40 to 50 percent following renegotiation of the longstanding collaboration agreement signed in 2004. BioInvent continues to contribute 50 percent of the development costs.

Patent protection
Patents for TB-403 and similar antibodies have been granted in Europe, the US, Japan and several additional countries, and patent applications are pending in further countries. Patents covering use of antibodies against PIGF, for example for the purpose of treating or preventing cancer, have also been granted, including in the US.