Fulcrum Therapeutics Presents Updated Data on Sickle Cell Disease Program at the 62nd American Society of Hematology (ASH) Annual Meeting and Exposition

CAMBRIDGE, Mass., Dec. 05, 2020 (GLOBE NEWSWIRE) — Fulcrum Therapeutics, Inc. (Nasdaq: FULC), a clinical-stage biopharmaceutical company focused on improving the lives of patients with genetically defined rare diseases, today announced that preclinical data with FTX-6058 for the treatment of sickle cell disease will be presented in three posters at the virtual 62nd American Society of Hematology (ASH) Annual Meeting and Exposition taking place December 5-8, 2020. FTX-6058 is a highly potent small molecule EED inhibitor that induces expression of fetal hemoglobin (HbF). Elevating HbF can compensate for the mutated adult hemoglobin that has been identified as the root cause of several hemoglobinopathies and can ameliorate or eliminate the symptoms of sickle cell disease.

“We are encouraged by the robust preclinical data package and unique mechanism of action of FTX-6058, which has the potential to be a transformative therapy for sickle cell patients,” said Owen B. Wallace, Ph.D., Fulcrum’s chief scientific officer. “Through internal research and discussions with key opinion leaders, we have identified areas within the sickle cell disease landscape where FTX-6058 has the potential to address significant unmet need. Enrollment has begun in our Phase 1 trial in healthy volunteers and we look forward to progressing FTX-6058 in clinical development.”

FTX-6058 Results at ASH
Preclinical data with FTX-6058 showed an increase in HbF levels up to approximately 30% of total hemoglobin, demonstrating the potential to have a significant impact in patients with sickle cell disease. FTX-6058 inhibits PRC2 via binding to EED, which induces a robust HbF protein expression in cell and murine models. Increasing HbF has the potential to prevent or reduce disease-related pathophysiology, resulting in reduction of recurring events such as vaso-occlusive crises and hemolysis. Human genetic data indicates that individuals with the sickle cell mutation but who have high HbF levels may have asymptomatic disease, underscoring the protective effect of increased HbF.

Key highlights include:

• Demonstrated potent target engagement and HbF induction in vivo in animal models at plasma concentrations reasonably expected to be achieved in the clinic.
• Pharmacological activity in target cells can be readily monitored in the clinic since target engagement in bone marrow correlates with target engagement in peripheral monocytes in animals.
• Demonstrated an impressive preclinical pharmacological profile with the potential to be a disease-modifying therapeutic for sickle cell patients.

The posters will be available in the “Publications” section of fulcrumtx.com following the sessions.

About FTX-6058
FTX-6058 is a highly potent small molecule inhibitor of EED capable of inducing robust HbF protein expression in cell and murine models. Fulcrum believes the pharmacokinetics and human dose simulations support that FTX-6058 may be given as a once daily oral compound. The validation of EED as a target for sickle cell disease and the discovery of FTX-6058 as a novel HbF-inducing small molecule were conducted using Fulcrum’s proprietary Product Engine. The company’s composition of matter patent covering FTX-6058 and related structures has been granted. Preclinical data with FTX-6058 showed an increase in HbF levels up to approximately 30% of total hemoglobin. Fulcrum has initiated a Phase 1 trial with FTX-6058 in healthy volunteers.

About Sickle Cell Disease
Sickle cell disease (SCD) is a genetic disorder of the red blood cells caused by a mutation in the HBB gene. This gene encodes a protein that is a key component of hemoglobin, a protein complex whose function is to transport oxygen in the body. The result of the mutation is less efficient oxygen transport and the formation of red blood cells that have a sickle shape. These sickle shaped cells are much less flexible than healthy cells and can block blood vessels or rupture leading to anemia. SCD patients typically suffer from serious clinical consequences, which may include anemia, pain, infections, stroke, heart disease, pulmonary hypertension, kidney failure, liver disease and reduced life expectancy.

About Fulcrum Therapeutics 
Fulcrum Therapeutics is a clinical-stage biopharmaceutical company focused on improving the lives of patients with genetically defined rare diseases in areas of high unmet medical need. Fulcrum’s proprietary product engine identifies drug targets which can modulate gene expression to treat the known root cause of gene mis-expression. The company has advanced losmapimod to Phase 2 clinical development for the treatment of facioscapulohumeral muscular dystrophy (FSHD) and Phase 3 for the treatment of COVID-19. Fulcrum has also advanced FTX-6058, a small molecule designed to increase expression of fetal hemoglobin for the treatment of sickle cell disease and beta thalassemia, into Phase 1 clinical development.

Please visit www.fulcrumtx.com.

Forward-Looking Statements
This press release contains “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995 that involve substantial risks and uncertainties, including statements regarding the development status of the Company’s product candidates and the potential advantages and therapeutic potential of the Company’s product candidates. All statements, other than statements of historical facts, contained in this press release, including statements regarding the Company’s strategy, future operations, future financial position, prospects, plans and objectives of management, are forward-looking statements. The words “anticipate,” “believe,” “continue,” “could,” “estimate,” “expect,” “intend,” “may,” “plan,” “potential,” “predict,” “project,” “should,” “target,” “will,” “would” and similar expressions are intended to identify forward-looking statements, although not all forward-looking statements contain these identifying words. Any forward-looking statements are based on management’s current expectations of future events and are subject to a number of risks and uncertainties that could cause actual results to differ materially and adversely from those set forth in, or implied by, such forward-looking statements. These risks and uncertainties include, but are not limited to, risks associated with Fulcrum’s ability to obtain and maintain necessary approvals from the FDA and other regulatory authorities; continue to advance its product candidates in clinical trials; initiate and enroll clinical trials on the timeline expected or at all; correctly estimate the potential patient population and/or market for the Company’s product candidates; replicate in later clinical trials positive results found in preclinical studies and/or earlier-stage clinical trials of losmapimod and its other product candidates; advance the development of its product candidates under the timelines it anticipates in current and future clinical trials; obtain, maintain or protect intellectual property rights related to its product candidates; manage expenses; and raise the substantial additional capital needed to achieve its business objectives. For a discussion of other risks and uncertainties, and other important factors, any of which could cause the Company’s actual results to differ from those contained in the forward-looking statements, see the “Risk Factors” section, as well as discussions of potential risks, uncertainties and other important factors, in the Company’s most recent filings with the Securities and Exchange Commission. In addition, the forward-looking statements included in this press release represent the Company’s views as of the date hereof and should not be relied upon as representing the Company’s views as of any date subsequent to the date hereof. The Company anticipates that subsequent events and developments will cause the Company’s views to change. However, while the Company may elect to update these forward-looking statements at some point in the future, the Company specifically disclaims any obligation to do so.

Contact:

Investors:
Christi Waarich
Director, Investor Relations and
Corporate Communications
617-651-8664
cwaarich@fulcrumtx.com

Stephanie Ascher
Stern Investor Relations, Inc.
stephanie.ascher@sternir.com 
212-362-1200

Media:
Kaitlin Gallagher
Berry & Company Public Relations
kgallagher@berrypr.com
212-253-8881