Silexion Therapeutics Corp. (NASDAQ: SLXN) ("Silexion" or the "Company"), a clinical-stage biotech developing RNA interference (RNAi) therapies for KRAS-driven cancers, today announced significant new findings from its Phase 2 trial of LODER™ in patients with non-resectable locally advanced pancreatic cancer (LAPC) which bear the KRAS G12D or G12V mutation (approximately 70% of pancreatic cancer patients). Overall the updated analysis reveals a 56% objective response rate (ORR) in patients treated with LODER, with the ORR increasing to 67% in patients whose previously non-resectable tumors became resectable. This marks a significant step forward in potentially improving surgical outcomes for LAPC patients.

Silexion had previously reported that patients treated with LODER in combination with standard-of-care (SoC) chemotherapy experienced a 9.3-month improvement in overall survival (OS) compared to chemotherapy alone. The new data now underscores LODERs additional potential to increase the resectability of tumors, opening up more surgical options for patients with otherwise inoperable pancreatic cancer.

Silexion is also progressing with the development of its next generation product, SIL-204, which builds upon the efficacy of the LODER. SIL-204 is designed to target a broader range of KRAS mutations, covering pan- G12x and G13D, as well as the previously reported findings of properties which should make it more effective clinically such as improved stability and enhanced ability to get to the site of action for silencing the KRAS oncogene. These improved properties demonstrated in preclinical models position SIL-204 as a promising option for the treatment of difficult-to-treat cancers such as locally advanced pancreatic cancer. Silexion continues to proceed with the development of this optimized candidate.

"We are very encouraged by these new findings, which demonstrate LODER's ability to significantly improve tumor resectability in patients with non-resectable pancreatic cancer, and the improved profile of SIL-204" said Ilan Hadar, Chairman and CEO of Silexion. "As we advance our broader pipeline to address KRAS-driven cancers, this data further validates our oncogene silencing approach."

About the Phase 2 Trial of LODER
The open-label Phase 2 trial enrolled 48 patients in the mITT population with non-resectable locally advanced pancreatic cancer (LAPC) and borderline resectable pancreatic cancer (BRPC) across the U.S. and Israel. The trial was conducted in two parts:
•    Cohort 1 (n=29): Patients were randomized 1:1 to receive either LODER with SoC chemotherapy or SoC chemotherapy alone. The primary endpoint was overall survival (OS), with 16 patients confirmed to harbor the KRAS G12D/V mutation.
•    Cohort 2 (n=19): This cohort enrolled patients with non-resectable tumors, LAPC or BRPC, with the key endpoints focused on ORR and safety. Seven patients in this cohort were confirmed to have KRAS G12D/V mutations.
•    Objective Response Rate for 23 patients confirmed with KRAS G12D/V (Cohorts 1+2)

About Silexion Therapeutics
Silexion Therapeutics (NASDAQ: SLXN) is a pioneering clinical-stage, oncology-focused biotechnology company developing innovative RNA interference (RNAi) therapies to treat solid tumors driven by KRAS mutations, the most common oncogenic driver in human cancers. The company's first-generation product, LODER, has shown promising results in a Phase 2 trial for non-resectable pancreatic cancer. Silexion is also advancing its next-generation siRNA candidate, SIL-204, designed to target a broader range of KRAS mutations and showing significant potential in preclinical studies. The company remains committed to pushing the boundaries of therapeutic innovation in oncology, with a focus on improving outcomes for patients with difficult-to-treat cancers. For more information please visit: https://silexion.com