Flare Therapeutics is a clinical-stage biotech headquartered in Cambridge, Mass., that focuses exclusively on drugging transcription factors using an integrated discovery platform to identify ligands to previously undrugged proteins. The company has prioritized FX-111, a first-in-class degrader targeting ARON for prostate cancer, which received IND clearance and is expected to enter clinical development in Q3 2026. FlareTx is also advancing an ARON RIPTAC program through preclinical development to complement FX-111 and expand its ability to address AR-driven prostate cancer. Separately, FX-909, an oral PPARG inhibitor targeting luminal lineage biology in urothelial cancer, is in a Phase 1B dose expansion and the company intends to progress it via an external partnership. The recent $85M Series C provides capital to advance these programs, support working capital and general corporate purposes. The company appointed Anna Protopapas as CEO concurrent with the financing to guide its next phase of clinical and corporate development.

Total raised

$290M

Funding rounds

3

Latest round

Series C

Latest activity

Jun 2026