Notable Labs Presents the Design Plan for the PPMP-Enabled Phase 2 Trial with Volasertib for Relapsed/Refractory AML at AACR 2024 - Seite 2

Method: Ex vivo flow cytometry experiments evaluated the treatment of volasertib on 41 primary acute myeloid leukemia (AML) samples collected from peripheral blood or bone marrow. Dose-response profiles consistent with volasertib’s role as a cell cycle inhibitor were observed. To obtain a preliminary concentration of volasertib for patient stratification, Notable compared the ex vivo resistant blast fractions (leukemic cells surviving ex vivo treatment with volasertib) at several concentrations with the areas under the volasertib dose-response curves (AUCs), assuming that AUCs would correspond most accurately with the clinical responses.

Results: The results suggest a strong correlation between volasertib resistant fractions treated with 31.6 and 100 nM of volasertib and AUCs, which could represent a suitable metric to stratify patients into responders and non-responders. These preliminary metrics predict that 32-33% of de novo patients and 25% of R/R AML patients would be predicted to be responders if they were treated with volasertib.

Poster information:
Session Category:	Clinical Research
Session Title:	Predictive Biomarkers
Session Date and Time:	Tuesday Apr 9, 2024, 9:00 AM - 12:30 PM PT
Location:	Poster Section 45
Poster Board Number:	19
Published Abstract Number:	5178

The full poster will be posted to the company’s website in the Scientific Presentations & Publications page in the News section of the website shortly after the event.

About Volasertib
Volasertib is a PLK-1 inhibitor with demonstrated activity in AML and other tumor types, including solid tumors, with significant unmet medical need. Building on the performance of volasertib on PPMP, an important and proprietary step during Notable’s targeted in-licensing strategy and decision making, Notable will utilize PPMP to predict volasertib-responsive patients prior to their treatment, with the goal of selectively enrolling and treating those predicted responders, increasing volasertib’s response rates and overall patient outcomes, and fast-tracking volasertib’s remaining clinical development in this patient population. Volasertib was originally developed and manufactured by Boehringer Ingelheim and previously granted breakthrough therapy designation by the FDA. Notable in-licensed volasertib and obtained exclusive worldwide development and commercialization rights, except for certain rare pediatric cancers.