Asher Bio Raises $108m For Immune Cell-Specific Therapies

Series B Follows $55m Series A Round In March

With a CD8-targeting IL-2 mutein as its lead program, the start-up is developing cis-targeted immunotherapies that selectively target two molecules on the same immune cell for improved efficacy and safety.

Blue and green "venture capital" neon light
Asher Bio will use its funding to take lead program AB248 into the clinic • Source: Alamy

Asher Biotherapeutics, Inc. aims to get around the problem of pleiotropy – engagement of a target across a variety of cells in the body, causing unintended side effects – by developing cell-targeted immunotherapies that engage two targets on the same immune cell. The company said on 1 September that it closed a $108m series B venture capital round to advance AB248, an interleukin-2 (IL-2) mutein targeting CD8-positive T-cells, into the clinic and to progress additional programs.

South San Francisco-based Asher Bio has an initial focus on cancer with plans to also develop cell-, or cis-targeted, immunotherapies for autoimmune and infectious diseases

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