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Biocytogen Announces Clinical Milestone with First Patient Dosed in Phase 1 Trial of IDEAYA’s First-in-Class B7H3/PTK7 Bispecific TOP1 ADC IDE034

BEIJING, February 28, 2026--Biocytogen Pharmaceuticals (Beijing) Co., Ltd. (Biocytogen, SSE: 688796; HKEX: 02315), a global biotechnology company that drives the research and development of novel antibody-based drugs with innovative technologies, today announced that its partner IDEAYA Biosciences, Inc. ("IDEAYA"; Nasdaq: IDYA) has dosed the first patient in IDEAYA’s Phase 1 dose-escalation/expansion clinical trial of IDE034, an investigational B7H3/PTK7 bispecific TOP1 ADC. Pursuant to the comp

articleBiocytogen Pharmaceuticals (beijing) Co. Ltd. Class AFebruary 27, 20263/company/biocytogen-pharmaceuticals-beijing-co-ltd-class-a/news/biocytogen-announces-clinical-milestone-with-first-patient-dosed-in-phase-1-trial-of-ideayas-first-in-class-b7h3ptk7-bispecific-top1-adc-ide034-1
Biocytogen Announces Clinical Milestone with First Patient Dosed in Phase 1 Trial of IDEAYA’s First-in-Class B7H3/PTK7 Bispecific TOP1 ADC IDE034

About this update from Biocytogen Pharmaceuticals (beijing) Co. Ltd. Class A

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IDEAYAglobal biotechnology companyIDEAYA Biosciences, Inc.Phase 1 trialtolerabilityhuman antibodymilestone paymentclinical trialTOP1