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(11)

EP 4 561 621 A1

(12)

(43) Date of publication: 04.06.2025 Bulletin 2025/23 (21) Application number: 22789809.5 (22) Date of filing: 20.09.2022

(51) International Patent Classification (IPC):  A61K 39/395(2006.01) A61P 37/02(2006.01) A61P 21/04(2006.01) C12N 15/00(2006.01) (52) Cooperative Patent Classification (CPC): A61P 37/02; A61P 21/04; C07K 16/2803; A61K 2039/505 (86) International application number: PCT/US2022/076691 (87) International publication number: WO 2024/025602 (01.02.2024 Gazette 2024/05)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 27.07.2022 US 202263369590 P (71) Applicant: Viela Bio, Inc. Deerfield, IL 60015 (US)	(72) Inventors: REES, William Deerfield, Illinois 60015 (US) SMITH, Michael Deerfield, Illinois 60015 (US) KATZ, Eliezer Deerfield, Illinois 60015 (US) (74) Representative: Lau, Sarah Jane et al Kilburn & Strode LLP Lacon London 84 Theobalds Road London WC1X 8NL London WC1X 8NL (GB)