Nashville-based Revelyx Bio has launched as a clinical-stage company built around an exclusive license from China-based Chongqing Claruvis Pharmaceutical for YY003, a recombinant botulinum toxin type A (rBoNT/A) in a ready-to-use liquid formulation. Revelyx holds rights to develop and commercialize YY003 for aesthetic and therapeutic indications globally, excluding mainland China, Hong Kong, and Macau. Financial terms were not disclosed.
YY003 is produced via recombinant expression in E. coli rather than conventional Clostridium botulinum fermentation, a manufacturing distinction Claruvis describes as offering greater control over neurotoxin identity and purity. The ready-to-use prefilled syringe format eliminates the reconstitution step required for currently approved leading botulinum toxin products. The US FDA cleared an investigational new drug application for YY003 in September 2024, and a Phase II study in adults with moderate-to-severe glabellar lines has been completed. Revelyx said it expects to report topline data in Q3 2026.
Claruvis's platform credentials are anchored by Retoxin (YY001), a related lyophilized rBoNT/A that received approval from China's National Medical Products Administration in March 2026 — the first approved recombinant botulinum toxin type A anywhere in the world. YY003 is a distinct asset, differentiated from Retoxin primarily by its liquid formulation. Claruvis is separately advancing Retoxin in a Phase III trial in China for upper-limb spasticity secondary to stroke.
The deal is Revelyx's founding transaction. The company is backed by NRL Capital, whose founding partner Xianghong Lin also founded BioBay, a major life sciences park in Suzhou. Dustin Sjuts, appointed CEO at launch, most recently served as president of Revance Therapeutics, where he oversaw the FDA approvals and US commercial launches of daxibotulinumtoxinA-lanm (Daxxify) for glabellar lines and cervical dystonia.