
Contract development and manufacturing organisation ViroCell Biologics has partnered AvenCell Therapeutics for expediting the development of new allogeneic chimeric antigen receptor (CAR)-T therapies to treat blood cancers.
The company also announced the delivery of a new retroviral vector to AvenCell Therapeutics.
The initial vector will be utilised to produce AVC-203, an experimental cluster of differentiation 19 and 20 (CD19/CD20) dual-targeted cell therapy for B-cell malignancies and autoimmune diseases.
AvenCell’s AVC-203 represents its second investigational treatment using allogeneic engineering techniques to create an off-the-shelf product to prevent both graft-versus-host disease and rejection by the patient’s T cells and natural killer (NK) cells.
The therapy enables immediate treatment and broader patient access, as well as cutting costs.
The addition of AvenCell’s RevCAR receptor into AVC-203 further enhances its targeting beyond CD19 and CD20.

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By GlobalDataViroCell CEO John Hadden II stated: “I am proud of Team ViroCell’s accomplishments in the successful end-to-end delivery of this retroviral vector and accelerating a novel therapy into clinical development in an area of high unmet need.
“We look forward to continuing our work with AvenCell on their exciting platform.â€
AvenCell’s collaboration with ViroCell was based on the company’s expertise in producing high-yield vectors quickly.
By incorporating a cell line from AvenCell into good manufacturing practice processes, ViroCell met the challenge of delivering a high-yield vector within the required timeframe.
This achievement demonstrates ViroCell’s capability to manage complex production demands in the field of allogeneic CAR T-cell therapies.
A first-in-human Phase I study involving patients with relapsed or refractory B-cell lymphoma is expected to commence using AVC-203 in the second half of 2025.
AvenCell CEO Andrew Schiermeier stated: “We selected ViroCell to support our platform because we knew that they could execute reliably in areas where other CDMOs can’t. The delivery of this retroviral vector for AVC-203 is proof that our trust in ViroCell was well-placed.â€
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