JY201 / Shenzhen Enduring - LARVOL DELTA

A novel pegylated bispecific antibody-drug conjugate (P-BsADCpb-adc) targeting cancers co-expressing PD-L1 and CD47 (AACR 2023) - "Yet, in solid tumor therapies, effort for further improvement of efficacy and safety has been hindered by the poor tumor penetration of conventional IgG based ADC, low internalization efficiency, undesired efflux of ADC from tumor cells, narrow therapeutic window due to the on-target/off tumor and Fc induced toxicity, etc. To address those issues, we previously reported that the compound JY201, a Polyethylene Glycol (PEG)-based bispecific ADC (P-BsADC) targeting two epitopes of Her2, demonstrated advantages in tumor penetration, internalization efficiency, lysosome trafficking, no Fc related toxicity, and better efficacy in tumor inhibition than transtuzumab deruxtecan (Ds-8201). In vivo pharmacokinetics and toxicological studies of JY207 are being conducted in cynomolgus monkeys and are expected to show desirable results. All those findings in this study warrant JY207 as a promising candidate for the clinical development for patients with CD47/PD-L1 double positive..."

Lung Cancer • Oncology • Solid Tumor • CD47 • HER-2

A novel pegylated bispecific antibody-drug conjugate (P-BsADC) targeting Her2+ cancers with improved efficacy and therapeutic window (AACR 2023) - "To address these issues, we previously reported that the compound JY201, a Polyethylene Glycol (PEG)-based bispecific ADC (P-BsADC) targeting two epitopes of Her2, demonstrated advantages in tumor penetration, internalization efficiency, lysosome trafficking effectiveness, no Fc related toxicity, and better efficacy in tumor inhibition than transtuzumab deruxtecan (Ds-8201). Due to much shorter half-life (5 times shorter) in mice for PEGylated proteins than in primates, we expect JY201 will have much higher tolerated dose than the 50mg/kg in primates. In summary, the findings from this study provide solid preclinical evidence for JY201 to be developed further as an efficacious and safe clinical treatment for patients with Her2 positive cancers."

Clinical • Oncology • HER-2