Chinese 52 wk study of XKH004, a novel, SC, humanized anti-17A/F in 323 active AS pts Rx q4 wks vs PBO. @ Wk 16, XKH004 was superior for ASAS40 (45.4% vs 19.4%; P<0.001), improved to 66% by wk 52. https://t.co/f7w41m4QZy https://t.co/LELo52zUb7