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(11)

EP 4 110 823 A1

(12)

(43) Date of publication: 04.01.2023 Bulletin 2023/01 (21) Application number: 21713215.8 (22) Date of filing: 24.02.2021

(51) International Patent Classification (IPC):  C07K 16/30(2006.01) C07K 14/725(2006.01) A61K 39/00(2006.01) (52) Cooperative Patent Classification (CPC): C07K 2317/32; C07K 16/30; C07K 2317/21; C07K 2317/565; A61K 2039/5156; C07K 2319/33; C07K 2319/03; A61K 39/001186; C07K 14/4748; C07K 14/7051 (86) International application number: PCT/US2021/019420 (87) International publication number: WO 2021/173674 (02.09.2021 Gazette 2021/35)

(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: 26.02.2020 US 202062981940 P 09.09.2020 US 202063076123 P (71) Applicant: A2 Biotherapeutics, Inc. Agoura Hills CA 91301 (US)	(72) Inventors: WANG, Xueyin Agoura Hills, California 91301 (US) MARTIN, Aaron D. Agoura Hills, California 91301 (US) XU, Han Agoura Hills, California 91301 (US) KAMB, Carl Alexander Agoura Hills, California 91301 (US) (74) Representative: Schiweck Weinzierl Koch Patentanwälte Partnerschaft mbB  Ganghoferstraße 68 B 80339 München 80339 München (DE)