Drug resistance is one of the biggest challenges in oncology, accounting for more than 90% of cancer deaths. In this virtual event, key opinion leaders (KOLs) Marc-Steffen Raab (Heidelberg University Hospital) and Jonathan L. Kaufman (Emory University), will discuss recent data of Heidelberg Pharma’s lead candidate, HDP-101, in relapsed or refractory multiple myeloma. Heidelberg Pharma’s approach, which uses Amanitin as a payload, offers a novel mode of action by debulking the tumor and killing cancer stem cells, the key drivers of tumor relapse and metastasis.

Key Highlights:
- HDP-101 is an anti-BCMA antibody-Amanitin drug conjugate, advancing in Cohort 8 of a Phase I/IIa clinical trial in relapsed or refractory multiple myeloma.
- HDP-101 as monotherapy has shown favorable safety and encouraging efficacy, with objective responses including a complete response.
- HDP-101 is well-tolerated with no signs of ocular toxicities, kidney, liver or lung damage, infusion reactions, or extensive myelosuppression.
- Heidelberg Pharma’s approach is distinct, as Amanitin effectively targets both dividing and dormant tumor cells by inhibiting the RNA polymerase II through a cell-cycle independent mechanism. Almost all ADCs in clinical use or development are based on a small number of toxic compounds, largely limited to microtubule- or DNA-targeting toxins that primarily affect proliferating cells.
- Updated clinical data will be presented at the 30th European Hematology Association (EHA) Congress, taking place in Milan from June 12–15, 2025.
Why Attend?
This is a fantastic opportunity to learn more about the treatment landscape in this severe and currently incurable disease. Attendees can participate in a live Q&A session at the end of the presentation or submit questions in advance of the event.
Join us for an informative session that will provide fascinating insights into a novel and under-utilised ADC payload class. Register now to secure your spot!
Webinar Leaders

Jonathan L. Kaufman, MD
David Bankes Glass Professor, Department of Hematology and Medical Oncology, Winship Cancer Institute at Emory University

Prof. Dr. med. Marc-Steffen Raab
Director Heidelberg Myeloma Center, Heidelberg University Hospital
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