On October 8, 2021 OncoNano Medicine, Inc. reported positive results from its preclinical study of ONM-501, a novel dual-activating polyvalent STING agonist for immuno-oncology applications (Press release, OncoNano Medicine, OCT 8, 2021, View Source [SID1234591013]). The data, presented at The American Association for Cancer Research (AACR) (Free AACR Whitepaper) Virtual Conference on Tumor Immunology and Immunotherapy, demonstrate strong efficacy in multiple tumor models.
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"We are excited by the positive preclinical results for ONM-501 recently presented at AACR (Free AACR Whitepaper). STING plays a crucial role in mediating our innate immune systems but has consistently been a challenging pathway to target," said Martin Driscoll, Chief Executive Officer of OncoNano Medicine, Inc. "We are encouraged by the constellation of preclinical data that demonstrates ONM-501 could have a clinical profile differentiated from earlier generation cyclic dinucleotide STING agonist compounds. The novel ONM-501 formulation consisting of our STING activating pH-sensitive micelle loaded with an endogenous agonist has demonstrated a capability to produce a dual and prolonged activation of STING while recruiting a robust adaptive immune response to the tumor microenvironment. We look forward to continuing our IND-enabling activities as we advance ONM-501 to first in human trials."
Presentation Overview
TITLE: ONM-501 ― A synthetic polyvalent STING agonist for cancer immunotherapy
PRESENTER: Qingtai Su, Ph.D., Senior Scientist, OncoNano Medicine, Inc.
ONM-501 demonstrated antitumor efficacy in six different syngeneic mouse models from different tissues of origin (MC38, 4T1, TC-1, B16-F10, CT26 and A20). The animals were treated intratumorally with ONM-501 as a monotherapy or in combination with PD-1 blockade. The findings indicate that ONM-501 demonstrated:
Strong antitumor efficacy across all tumor models tested as a mono or combo therapy
Significantly improved efficacy with increased complete response in several modelswhen combined with PD-1 blockade
Successful combination of a novel, proprietary STING activating micelle with theendogenous cGAMP potentially offers a synergistic immunotherapy strategy against cancer