Third Arc Bio vs Pliant Therapeutics
Side-by-side comparison of AI visibility scores, market position, and capabilities
Raised $52M Series A extension (Feb 2026) from a16z as new investor — total $217M. ARC101 (bispecific T cell engager, CLDN6+) in Phase 1 solid tumors. Platform spans oncology and autoimmune.
About
Third Arc Bio raised a $52 million Series A extension in February 2026 with Andreessen Horowitz as a new investor, building on its prior $165 million Series A to reach $217 million in total financing. The company develops multifunctional antibodies — protein therapeutics that combine multiple mechanisms of action in a single molecule — with its lead program ARC101 being a bispecific T cell engager targeting CLDN6 in solid tumors, currently in Phase 1 clinical trials.
Pliant Therapeutics is a clinical-stage biotech (Nasdaq: PLRX) developing integrin inhibitors for fibrotic diseases, with lead program bexotegrast in Phase 2b/3 trials for idiopathic pulmonary fibrosis.
About
Pliant Therapeutics develops small molecule integrin inhibitors targeting the pathological tissue scarring (fibrosis) that drives diseases including idiopathic pulmonary fibrosis (IPF), primary sclerosing cholangitis (PSC), and nonalcoholic steatohepatitis (NASH/MASH). Integrins are cell surface receptors that activate TGF-β, the master regulator of fibrosis — blocking specific integrin subtypes (αvβ6, αvβ1) can halt or reverse fibrosis progression without broadly suppressing immunity.
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