MP0533 phase 1/2a dose escalation study continues with overall acceptable safety profile to date as well as initial antileukemic and pharmacodynamic activity Clinical protocol amendment in process with optimized dosing scheme to overcome target-mediated drug disposition and test the full potential

Radio-DARPin Therapy (RDT) Candidate MP0712 supported by in vivo data presented at the European Association of Nuclear Medicine (EANM) Congress; first-in-human start and initial clinical data expected in 2025 RDT strategic agreement with Orano Med revised and strengthened: both companies to

ZURICH-SCHLIEREN, Switzerland and CONCORD, Mass., Oct. 25, 2024 (GLOBE NEWSWIRE) -- Ad hoc announcement pursuant to Art. 53 LR – Molecular Partners AG (SIX: MOLN; NASDAQ: MOLN), a clinical-stage biotech company developing a new class of custom-built protein drugs known as DARPin therapeutics

Under the revised agreement, both companies will co-develop four Radio-DARPin programs; each company will have the right to commercialize two programs (previously one each) Molecular Partners will hold commercial rights to the second nominated Radio-DARPin Candidate, in addition to rights to first

Dose-dependent efficacy observed with favorable safety profile Attractive tumor to kidney ratios shown in biodistribution studies Picomolar affinity and high specificity for DLL3 as precision attributes for alpha radiation therapy Molecular Partners and Orano Med preparing for clinical entry in

First Radio-DARPin Therapy (RDT) candidate MP0712 nominated; supporting preclinical package presented at SNMMI; initial clinical data expected in 2025 Strategic collaboration agreement signed with Orano Med to co-develop 212 Pb-based RDT candidates for multiple oncology targets, including MP0712

Proof-of-concept of Switch-DARPin platform established in vivo , enabling the use of logic-gated and reversible immune activators Preclinical safety, efficacy, and pharmacokinetics support MP0621’s potential to selectively kill cKit-positive cells and conditionally block CD47 with limited systemic

MP0712, a 212 Pb-Radio-DARPin targeting DLL3, as first candidate of Molecular Partners’ RDT platform in development in partnership with Orano Med Positive tumor to kidney ratio and biodistribution, favorable antitumor activity and safety profile First-in-human study in planning with initial data

Mechanism of action supported by observed MP0317 localization and immune cell activation in the tumor microenvironment Favorable and manageable safety profile observed at all tested dose levels Weekly and three-weekly dosing schedules established, supported by pharmacokinetics and pharmacodynamics

MP0533: Phase 1 trial continues to demonstrate acceptable safety and antitumor activity up to cohort 6, dosing in cohort 7 ongoing, additional dose escalation cohorts being prepared Radio-DARPin Therapy (RDT): Lead DLL3 candidate advancing into IND-enabling studies with partner Orano Med,