On May 11, 2023 Redx (AIM:REDX), the clinical-stage biotechnology company focused on discovering and developing novel, small molecule, targeted therapeutics for the treatment of cancer and fibrotic disease reported additional preclinical data for its lead fibrosis asset, RXC007, and the Discodin Domain Receptor (DDR)1/2 discovery programme, as presented yesterday at the Resistant Tumour Microenvironment, Keystone Symposia, in Vancouver, BC (Press release, Redx Pharma, MAY 11, 2023, View Source [SID1234631855]). The data presented were from preclinical models of pancreatic ductal adenocarcinoma (PDAC) and triple negative breast cancer (TNBC), in combination with chemotherapy and immunotherapy, as current standard of care.
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RXC007, in combination with gemcitabine/Abraxane [i] in metastatic and high-extra cellular matrix (ECM) patient-derived PDAC models, was shown to increase survival compared to single agent standard of care alone. The combination of RXC007 with standard of care provided a significant increase in median survival days from date of treatment in a dose dependent manner. These new data on RXC007 complement those also presented at the meeting by collaboration partner the Garvan Institute of Medical Research ("the Garvan") on REDX10616, a close analogue of RXC007, which were also presented at the Extracellular Matrix Pharmacology congress last year. These data show REDX10616, in combination with FOLFIRINOX, re-sensitised a FOFIRINOX-resistant patient derived xenograft (PDX) model to treatment and led to a striking increase in survival in combination with the standard of care triplet chemotherapy.
Taken together, these data provide a strong rationale for the potential of ROCK2 inhibition in combination with standard of care as a potential treatment for cancer-associated fibrosis. Redx plans to further investigate this treatment setting with the Company’s next-generation ROCK2 inhibitor, RXC007, in the clinic. Additionally, at the Keystone Symposia, further data were also presented from Redx’s DDR1/2 programme in combination with anti-PD-1 in TNBC models. Using a tool DDR1/2 inhibitor, in combination with anti-PD-1, in the TNBC E0771 model resulted in a statistically significant increase in survival when compared to the control group, an effect not observed with either single agent alone.