Crystalys is advancing dotinurad, a next-generation, once-daily oral URAT1 inhibitor positioned as a second-line therapy to reduce uric acid, gout flares and tophi. Dotinurad was invented by Fuji Yakuhin and has regulatory approvals in Japan, China, the Philippines, Taiwan and Thailand, with supporting clinical data from those markets. The company is conducting the JEWEL clinical research program, which includes the Phase 3 RUBY and TOPAZ trials and the Phase 2 AMETHYST study to evaluate safety and efficacy across a broad spectrum of gout patients. Crystalys aims to position dotinurad as a best-in-class option for safety and efficacy and is preparing for global commercialization. The company is headquartered in San Diego and was co-founded by Catalys Pacific and Novo Holdings. With the announced $130 million Series B, Crystalys has increased its financial runway to support late-stage development and commercial readiness.

Total raised

$335M

Funding rounds

2

Latest round

Series B

Latest activity

Jul 2026