352. NEW DRUG FOR VASCULITIS: EFFICACY OF A RECOMBINANT SINGLE-CHAIN FRAGMENT VARIABLE REGION, VASSF. (29th March 2019) - Kameoka, Yosuke; Kishi, Fukuko; Koura, Minako; Yamakawa, Yoshio; Nagasawa, Rora; Ito, Fuyu; Matsuda, Junichiro; Suzuki, Osamu; Nakayama, Toshinori; Suzuki, Kazuo