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ARTICLE | Emerging Company Profile

Yellowstone: Mining HLA class II for TCR therapies

Oxford spinout is using a 20-year AML biobank to develop TCR engagers against a largely untapped antigen class

July 1, 2026 8:02 PM UTC

Yellowstone is using a platform built around HLA class II-presented antigens to address the target discovery bottleneck in immuno-oncology, identifying cancer-selective targets from a largely untapped antigen source and designing T cell receptor-based therapies against them.

Yellowstone Bioscience Ltd. launched in 2024 with $22 million from Syncona Ltd. (LSE:SYNC) to turn two decades of acute myelogenous leukemia (AML) patient biobank research from Paresh Vyas and colleagues at the University of Oxford into T cell receptor (TCR) bispecifics...

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Yellowstone Biosciences Ltd.