(19)

(11)

EP 4 770 642 A2

(12)

(88) Date of publication A3: 17.04.2025 (43) Date of publication: 08.07.2026 Bulletin 2026/28 (21) Application number: 24861080.0 (22) Date of filing: 29.08.2024

(51) International Patent Classification (IPC):  A61K 31/425(2006.01) C07D 257/04(2006.01) A61P 35/00(2006.01) (52) Cooperative Patent Classification (CPC): A61P 35/00; A61K 45/06; A61K 31/519; A61K 31/506; A61K 31/425; A61K 31/55; A61K 2039/505; A61K 39/395; C07K 16/2863; C07K 2317/76; C07K 2317/24   C-Sets: A61K 39/395, A61K 2300/00; A61K 31/519, A61K 2300/00; A61K 31/506, A61K 2300/00; A61K 31/425, A61K 2300/00; A61K 31/55, A61K 2300/00; (86) International application number: PCT/US2024/044534 (87) International publication number: WO 2025/049814 (06.03.2025 Gazette 2025/10)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: GE KH MA MD TN (30) Priority: 01.09.2023 US 202363580096 P 11.10.2023 US 202363589547 P (71) Applicant: Boundless Bio, Inc. San Diego, CA 92121 (US)	(72) Inventors: HANSEN, Ryan San Diego, California 92121 (US) CHOWDHRY, Sudhir San Diego, California 92121 (US) KASIBHATLA, Shailaja San Diego, California 92121 (US) WAGNER, Klaus Wolfgang San Diego, California 92121 (US) HASSIG, Christian San Diego, California 92121 (US) (74) Representative: Mewburn Ellis LLP  Aurora Building Counterslip Bristol BS1 6BX Bristol BS1 6BX (GB)