STORM Therapeutics to present new data on its lead program STC-15 at the 34th EORTC-NCI-AACR Symposium and the 37th SITC Meeting

STC-15 is an oral small molecule inhibitor of the RNA methyltransferase METTL3

STORM's first-in-class lead program to enter clinical development in solid tumors in 2022

CAMBRIDGE, England, Oct. 20, 2022 /PRNewswire/ -- STORM Therapeutics Ltd. (STORM), the biotechnology company discovering and developing novel small molecule therapies targeting RNA modifying enzymes (RMEs) for oncology and other diseases, is pleased to announce that it will be presenting novel data on its lead program STC-15, a first-in-class clinical candidate, at the upcoming 34^th EORTC-NCI-AACR (ENA) Molecular Targets and Cancer Therapeutics Symposium and the 37^th Society for Immunotherapy of Cancer (SITC) Annual Meeting.

Dr. Jerry McMahon, CEO of STORM Therapeutics commented: "We are delighted to be presenting data from our first-in-class clinical candidate STC-15, an orally bioavailable, highly selective METTL3 inhibitor at these two scientific conferences. These data provide the rationale for the development of STC-15 both as monotherapy and in combination with checkpoint inhibition for the treatment of solid tumour malignancies. STC-15 is on track to enter a Phase 1 First-in-Human clinical study this year and will be the first molecule specifically targeting an RNA methyltransferase to enter clinical development."

Details of the conferences and presentations are as follow:

34^th EORTC-NCI-AACR (ENA) Molecular Targets and Cancer Therapeutics Symposium, 26-28 October, Barcelona, Spain
Session Title: New Therapies in Immuno Oncology
Poster Presentation Title: STC-15, an oral small molecule inhibitor of the RNA methyltransferase METTL3, inhibits tumour growth through activation of anti-cancer immune responses and synergises with immune checkpoint blockade
Poster Presentation Number: 345
Presenting Authors: Yaara Ofir -Rosenfeld; Oliver Rausch, PhD; Jerry McMahon; Lina Vasiliauskaite; Claire Saunders; Alexandra Sapetschnig; Georgia Tsagkogeorga; Mark Albertella; Marie Carkill; Jezrom Self-Fordham; Josefin-Beate Holz
Date & Time: Friday 28 October, 10.00 – 15.00 CET

37^th Society for Immunotherapy of Cancer (SITC) Annual Meeting, 10-12 November, Boston, USA
Session Title: Novel Single-Agent Immunotherapies
Poster Presentation Title: STC-15, an oral small molecule inhibitor of the RNA methyltransferase METTL3, inhibits tumour growth through activation of anti-cancer immune responses and synergises with immune checkpoint blockade
Poster Presentation Number: 1373
Presenting Authors: Joanna Obacz, Yaara Ofir -Rosenfeld; Oliver Rausch, PhD; Jerry McMahon; Lina Vasiliauskaite; Claire Saunders; Alexandra Sapetschnig; Georgia Tsagkogeorga; Mark Albertella; Marie Carkill; Jezrom Self-Fordham; Josefin-Beate Holz
Date & Time: Thursday 10 November, 09:00 – 21.00 EST

About STORM Therapeutics

STORM Therapeutics (STORM) is a biotechnology company creating novel therapies that inhibit RNA modifying enzymes (RME) for use in oncology and other diseases. There are more than 150 RNA modifications reported and approximately 300 RNA modifying enzymes which represent novel therapeutic targets.

STORM has leveraged its first-mover advantage to establish a novel drug discovery and RNA analytics platform leading to the identification of novel targets and a proprietary pipeline of first in class small-molecule drug candidates for potential use in oncology, inflammation, viral infections and CNS diseases.

The pipeline is exemplified by STORM's METTL3 inhibitor (STC-15) for which an IND has been filed with the FDA to support initiation of a Phase 1 clinical trial in cancer patients in 2022. STC-15 represents the first RNA modifying enzyme inhibitor to enter clinical evaluation in humans. Additional candidates are planned for advancement into IND-track activities in 2023.

STORM investors include M Ventures (the corporate venture capital arm of Merck KGaA, Darmstadt, Germany), Pfizer Ventures, Taiho Ventures, Cambridge Innovation Capital I Limited, Seroba Life Sciences, IP Group, Fast Track Initiative (FTI) and the University of Tokyo Innovation Platform.

For more information, please visit www.stormtherapeutics.com

About STC-15

STORM's lead program STC-15 is a first-in-class clinical candidate and will be the first inhibitor of RNA modification to enter clinical development in humans. STC-15 is an oral small molecule that inhibits METTL3 which is an RNA methyltransferase implicated in oncology and other diseases. Certain RNA methyltransferase are important regulators of RNA sensing and innate immune activation and represent novel immune-regulatory targets.

STC-15 has also been shown to inhibit tumor growth through mechanisms involving anti-cancer immune responses such as changes in interferon signaling and synergy with T cell checkpoint blockade. In addition, STC-15 has shown efficacy in leukemia models via mechanisms including inhibition of leukemia stem cell function.

STC-15 is planned for initial clinical study in cancer patients with solid tumors in 2022.

About EORTC-NCI-AACR Molecular Targets and Cancer Therapeutics Symposium

ENA 2022 is the drug development and translational research meeting, focusing on preclinical and phase I studies, enabling and facilitating in-depth scientific discussions on the latest developments in targets and drugs.

Attracting academics, scientists, and pharmaceutical industry representatives from across the globe to discuss the latest innovations in drug development, target selection and the impact of new discoveries in molecular biology.

For more information, please visit www.aacr.org

About Society for Immunotherapy of Cancer Annual Meeting

The Society for Immunotherapy of Cancer's (SITC) 37th Annual Meeting & Pre-Conference Programs (SITC 2022) provides a multidisciplinary educational and interactive environment focused on improving the outcome for current and future patients with cancer by incorporating strategies based on basic and applied cancer immunotherapy.

The Annual Meeting consists of cutting-edge research presentations by experts in the field, oral and poster abstract presentations and ample opportunity for structured and informal discussions, including important networking opportunities. In addition, the meeting includes updates on major national and international initiatives coming from academia, government, and industry, as well as important society projects.

For more information, please visit, www.sitcancer.org