DUX4 gene modulators(Double homeobox protein 4 gene modulators), MAPK11 inhibitors(mitogen-activated protein kinase 11 inhibitors), p38α inhibitors(P38 α mitogen-activated protein kinase inhibitors)

Therapeutic Areas

Infectious DiseasesNervous System DiseasesCardiovascular Diseases+ [7]

Active Indication-

Inactive Indication

Acute Coronary SyndromeAtherosclerosisCOVID-19+ [14]

Originator Organization

GSK Plc

Active Organization-

Inactive Organization

Fulcrum Therapeutics, Inc.

GSK Plc

Drug Highest PhaseSuspendedPhase 3

First Approval Date-

RegulationFast Track (United States), Orphan Drug (United States), Orphan Drug (European Union)

Structure/Sequence

Molecular FormulaC22H26FN3O2

InChIKeyKKYABQBFGDZVNQ-UHFFFAOYSA-N

CAS Registry585543-15-3

Clinical Trials associated with Losmapimod

NCT05397470

/ TerminatedPhase 3

A Phase 3 Global, Randomized, Double-Blind, Placebo-Controlled, 48-Week, Parallel-Group Study of the Efficacy and Safety of Losmapimod in Treating Patients With Facioscapulohumeral Muscular Dystrophy (FSHD) (REACH)

This is a study to evaluate the safety and efficacy of losmapimod in treating participants with Facioscapulohumeral Muscular Dystrophy (FSHD). Participants diagnosed with Facioscapulohumeral muscular dystrophy type 1 (FSHD1) or Facioscapulohumeral muscular dystrophy type 2 (FSHD2) will participate in Part A (Placebo-controlled treatment period) and will be randomized in a 1:1 ratio to receive losmapimod 15 milligrams (mg) or placebo orally twice daily (BID). Upon completion of Part A, participants will have the option to rollover into Part B (open-label extension) to evaluate the long-term safety, tolerability, and efficacy of losmapimod and will receive losmapimod 15 mg orally BID.

Start Date16 Jun 2022

Sponsor / Collaborator

Fulcrum Therapeutics, Inc.

NCT05002231

/ CompletedPhase 1

A Phase 1, Open-Label, 3-Period, Randomized, Single-Dose, Crossover Study to Assess the Relative Bioavailability and the Effect of Food on the Pharmacokinetics of a New 15 mg Tablet of Losmapimod Versus the Current 7.5 mg Tablet

This is a study to assess the relative bioavailability and the effect of food on the pharmacokinetics of a new 15 mg tablet formulation of losmapimod

Start Date19 Aug 2021

Sponsor / Collaborator

Fulcrum Therapeutics, Inc.

NCT04511819

/ TerminatedPhase 3

A Phase 3, Randomized, Double-Blind, Placebo-Controlled Study of the Safety and Efficacy of Losmapimod in Adult Subjects With COVID-19 (LOSVID STUDY)

The therapeutic hypothesis for the use of losmapimod in COVID-19 disease is that increased mortality and severe disease is caused by p38 mitogen-activated protein kinase (MAPK)-mediated exaggerated acute inflammatory response resulting from SARS-CoV-2 infection.
The study Sponsor hypothesizes that the early initiation of p38α/β inhibitor therapy in patients hospitalized with moderate COVID-19 who are at increased risk of a poor prognosis based on older age and elevated systemic inflammation will reduce clinical deterioration including progression to respiratory failure and death.
To address this hypothesis, Fulcrum Therapeutics is conducting a Phase 3, multicenter, randomized, double-blind, placebo-controlled study that will evaluate the safety and efficacy of losmapimod versus placebo in subjects 40 and older who are hospitalized with moderate COVID-19 disease.

Start Date28 Aug 2020

Sponsor / Collaborator

Fulcrum Therapeutics, Inc.

100 Clinical Results associated with Losmapimod

100 Translational Medicine associated with Losmapimod

100 Patents (Medical) associated with Losmapimod

110

Literatures (Medical) associated with Losmapimod

01 Mar 2025·Acta myologica : myopathies and cardiomyopathies : official journal of the Mediterranean Society of Myology

Deciphering Facioscapulohumeral Dystrophy in the clinical trials era: where are we now?

Review

Author: Lencioni, Matteo ; Rende, Mariaconcetta ; Gabellini, Davide ; Votta, Arianna ; Ciurli, Beatrice ; Torri, Francesca ; Ricci, Giulia ; Karakashi, Frida ; Mocciaro, Emanuele ; Ferraro, Elisabetta ; Filosto, Massimiliano ; Siciliano, Gabriele

Objectives:

Facioscapulohumeral muscular dystrophy (FSHD) is a common genetic disorder characterized by progressive muscle weakness, especially in the face, shoulders, and upper limbs. Despite extensive research, the underlying pathogenesis and clinical variability remain incompletely understood. This review aims to summarize recent advances in FSHD research, focusing on genetic and epigenetic factors and the potential for precision medicine.

Methods:

A comprehensive review of recent literature was conducted, examining molecular mechanisms such as mutations in the D4Z4 region, DUX4 expression, RNA interference (RNAi) and antisense oligonucleotides (AOs). Clinical variability was analyzed to assess different disease phenotypes. Clinical trials investigating potential treatments, especially those targeting DUX4, were also reviewed.

Results:

FSHD shows significant clinical variability, with different progression rates across phenotypes. The 4qA allele is linked to more typical forms of the disease, but epigenetic factors, including DNA methylation and miRNA expression, also influence disease severity. Despite progress, the exact molecular mechanisms driving disease expression remain unclear. Clinical trials, such as Losmapimod, show promise in slowing muscle degeneration, though results remain inconsistent.

Conclusions:

FSHD presents significant challenges for therapy development due to its genetic complexity and clinical variability. Ongoing research is needed to clarify pathogenesis and identify reliable biomarkers. Future therapeutic strategies should focus on precision medicine, integrating genetic, clinical, and imaging data to optimize patient stratification and treatment efficacy.

01 Dec 2024·Molecular diversity

The identification of c-Abl inhibitors as potential agents for Parkinson’s disease: a preliminary in silico approach

Article

Author: Rymbai, Emdormi ; Jupudi, Srikanth ; Srinivasadesikan, Venkatesan ; Roy, Dhritiman

Parkinson's disease (PD) is the most common movement disorder worldwide. PD is primarily associated with the mutation, overexpression, and phosphorylation of α-synuclein. At the molecular level, the upstream protein c-Abl, a tyrosine kinase, has been shown to regulate α-synuclein activation and expression patterns. This study aimed to identify potential c-Abl inhibitors through in silico approaches. Molecular docking was performed using PyRx software, followed by Prime MM-GBSA studies. BBB permeability and toxicity were predicted using CBligand and ProTox-II, respectively. ADME was assessed using QikProp. Molecular dynamics were carried out using Desmond (Academic version). DFT calculations were performed using the Gaussian 16 suite program. The binding scores of the top hits, norimatinib, DB07326, and entinostat were - 11.8 kcal/mol, - 11.8 kcal/mol, and - 10.8 kcal/mol, respectively. These hits displayed drug-likeness with acceptable ADME properties, except for the standard, nilotinib, which violated Lipinski's rule of five. Similarly, the molecular dynamics showed that the top hits remained stable during the 100 ns simulation. DFT results indicate DB04739 as a potent reactive hit. While based on toxicity prediction, entinostat may be a potential candidate for preclinical and clinical testing in PD. Further studies are warranted to confirm the activity and efficacy of these ligands for PD.

01 Oct 2024·BIOMEDICINE & PHARMACOTHERAPY

Losmapimod ameliorates doxorubicin-induced cardiotoxicity through attenuating senescence and inflammatory pathways

Article

Author: Sadaf, Bushra ; Zordoky, Beshay N ; Grant, Marianne K O ; Abdelgawad, Ibrahim Y ; Seelig, Davis ; Daniel, Mary R ; Dabour, Mohamed S

Irreversible cardiotoxicity limits the clinical application of doxorubicin (DOX). DOX-induced cardiotoxicity has been associated with induction of senescence and activation of the p38 MAPK pathway. Losmapimod (LOSM), an orally active p38 MAPK inhibitor, is an anti-inflammatory agent with cardioprotective effects. Nevertheless, the effect of LOSM against DOX-induced cardiotoxicity has not been reported. In this study, we determined the effects of LOSM on DOX-induced chronic cardiotoxicity in C57BL/6 N mice. Five-week-old C57BL/6 N mice were fed diet containing LOSM (estimated daily intake 12 mg/kg/day) or a control diet for four days. Thereafter, mice were randomized to receive six weekly intraperitoneal injections of either DOX (4 mg/kg) or saline. Three days after the last injection, cardiac function was assessed by trans-thoracic echocardiography. Activation of p38, JNK, and ERK1/2 MAPKs were assessed by immunoblotting in the heart and liver. Gene expressions of senescence, inflammatory, oxidative stress, and mitochondrial function markers were quantified using real-time PCR and serum inflammatory markers were assessed by Luminex. Our results demonstrated that LOSM attenuated p38 MAPK activation, ameliorated DOX-induced cardiac dysfunction, and abrogated DOX-induced expression of the senescence marker p21^Cip1. Additionally, LOSM demonstrated anti-inflammatory effects, with reduced cardiac Il-1α and Il-6 gene expression in DOX-treated mice. Systemic inflammation, assessed by serum cytokine levels, showed decreased IL-6 and CXCL1 in both DOX-treated mice and mice on LOSM diet. LOSM significantly increased mitofusin2 gene expression, which may enhance mitochondrial fusion. These findings underscore the potential therapeutic efficacy of p38 MAPK inhibition, exemplified by LOSM, in ameliorating DOX-induced cardiotoxicity, senescence, and inflammation.

142

News (Medical) associated with Losmapimod

21 Nov 2024

·www.fiercebiotech.com

Novartis, assessing peers’ muscular dystrophy failures, pens $1.1B deal for gene therapy biotech

Novartis is “really thinking about, how can we learn from the experiences of the first wave of companies that have had failures and perhaps some success with targeting these diseases,” CEO Vas Narasimhan, M.D., said.\n Novartis had one eye on the struggles its peers have encountered in the muscular dystrophy space when it decided to acquire Kate Therapeutics, according to the Big Pharma’s CEO.The Swiss drugmaker signed off on $1.1 billion in a combination of upfront cash and potential milestone payments to buy the gene therapy biotech, it announced today. San Diego-based Kate is focused on preclinical programs aimed at Duchenne muscular dystrophy (DMD), facioscapulohumeral dystrophy (FSHD) and myotonic dystrophy type 1 (DM1).These programs have been developed using the biotech’s Directed Evolution of AAV Capsid Leveraging In Vivo Expression of Transgene RNA (DELIVER) platform to produce “liver de-targeted muscle-tropic capsids, which transduce both skeletal muscle and cardiac tissue with potency and selectivity in vivo, while avoiding the liver,” according to a Nov. 21 release.This year has been a stark reminder of what tricky indications muscular dystrophies can be. Pfizer suffered a $230 million financial hit over the summer when its DMD gene therapy flunked a phase 3 trial while Fulcrum Therapeutics’ losmapimod encountered its own late-stage failure just four months after Sanofi bet $80 million on the FSHD candidate. Explaining the thinking behind the Kate acquisition during his opening presentation at the Meet Novartis Management event in London this morning, CEO Vas Narasimhan, M.D., said the pharma is “very interested” in FSHD, DM1 and the other muscular dystrophies.Novartis is “really thinking about, how can we learn from the experiences of the first wave of companies that have had failures and perhaps some success with targeting these diseases,” he added.Kate has “really solved some of the challenges of delivering the right targets or the right genes for patients with FSHD and DM1, and we\'ll see how we can also broaden that capability to help our own pipeline also advance in the neuromuscular space,” Varasimhan explained.Novartis—which markets the gene therapy Zolgensma for spinal muscular atrophy—has been working in neuroscience for “many years,” the CEO pointed out in his presentation, namechecking multiple sclerosis, neuromuscular disease and neurodegeneration.“We are now, I think, at a place where we think our gene therapy capabilities and the capabilities we brought in-house with the various vectors from Regenxbio and other partners will allow us to solve the biology that we did solve with Zolgensma, but then struggled to solve for other monogenic or polygenic neuromuscular diseases,” he added.

AcquisitionGene TherapyPhase 3

13 Nov 2024

·www.globenewswire.com

Fulcrum Therapeutics Announces Recent Business Highlights and Financial Results for Third Quarter 2024

― Patient enrollment and site activation progressing in Phase 1b PIONEER trial of pociredir in sickle cell disease (SCD) ― ― Ended the third quarter of 2024 with $257.2 million in cash, cash equivalents, and marketable securities; cash runway into at least 2027 ― ― Conference call and webcast scheduled for 8:00 a.m. ET today ― CAMBRIDGE, Mass., Nov. 13, 2024 (GLOBE NEWSWIRE) -- Fulcrum Therapeutics, Inc.® (Fulcrum) (Nasdaq: FULC), a clinical-stage biopharmaceutical company focused on developing small molecules to improve the lives of patients with genetically defined rare diseases, today reported financial results for the third quarter of 2024 as well as a business update. “In the third quarter, we made progress enrolling patients and activating new sites in the Phase 1b PIONEER trial of pociredir in sickle cell disease and advancing our preclinical pipeline,” said Alex C. Sapir, Fulcrum’s president and chief executive officer. “The need for effective therapeutic options for patients with sickle cell disease has become even more urgent due to the recent withdrawal of OXBRYTA® globally. Based on the initial data generated in the Phase 1b trial, we believe that pociredir has the potential to increase fetal hemoglobin to levels that could ameliorate symptoms of sickle cell disease. While we were disappointed with the results of the Phase 3 REACH trial announced in September, we remain committed to improving the lives of patients with genetically defined diseases in areas of high unmet medical need like sickle cell disease. We are focused on progressing the development of pociredir as expeditiously as possible and remain on track to provide data from the PIONEER trial in 2025.” Recent Business Highlights Patient enrollment and site activations continue to progress in the Phase 1b PIONEER trial evaluating pociredir in patients with SCD. Cohort 3 of the Phase 1b trial is evaluating pociredir at the 12 mg once daily dose, which will be followed by Cohort 4 at the 20 mg once daily dose. Each cohort is expected to enroll up to 10 patients. Fulcrum plans to share clinical data from the PIONEER trial in 2025.Following recent interactions with the FDA, Fulcrum plans to initiate Phase 1 clinical studies in healthy volunteers in support of the overall pociredir development program.Following the REACH trial results disclosed in September 2024, Fulcrum suspended development of losmapimod and has focused its research and development activities on advancing pociredir for the treatment of SCD, as well as advancing novel therapeutic agents for the potential treatment of inherited aplastic anemias, such as Diamond-Blackfan anemia, Shwachman-Diamond syndrome, and Fanconi anemia, and its early discovery programs. Third Quarter 2024 Financial Results Cash Position: As of September 30, 2024, cash, cash equivalents, and marketable securities were $257.2 million, as compared to $236.2 million as of December 31, 2023. The increase is due to the $80.0 million upfront payment received from Sanofi in the second quarter of 2024, partially offset by cash used to fund operating activities in 2024.Collaboration Revenue: Collaboration revenue was zero for the three months ended September 30, 2024, as compared to $0.8 million for the three months ended September 30, 2023. The decrease of $0.8 million was due to the completion of research services under the collaboration agreement with MyoKardia during the fourth quarter of 2023.R&D Expenses: Research and development expenses were $14.6 million for the three months ended September 30, 2024, as compared to $18.2 million for the three months ended September 30, 2023. The decrease of $3.6 million was primarily due to the reimbursement from the global development cost sharing under the collaboration with Sanofi for losmapimod, partially offset by increased costs related to the advancement of the Phase 1b PIONEER trial.G&A Expenses: General and administrative expenses were $8.4 million for the three months ended September 30, 2024, as compared to $10.0 million for three months ended September 30, 2023. The decrease of $1.6 million was primarily due to decreased employee compensation costs as a result of the reduction in workforce implemented in the third quarter of 2024.Net Loss: Net loss was $21.7 million for the three months ended September 30, 2024, as compared to a net loss of $24.0 million for the three months ended September 30, 2023. Cash Guidance Based on its current operating plans, Fulcrum expects to end 2024 with approximately $240.0 million of cash, cash equivalents, and marketable securities, and expects its cash burn for the full year 2025 will be approximately $55.0 million to $65.0 million. Fulcrum also expects that its cash, cash equivalents, and marketable securities as of September 30, 2024 will be sufficient to fund its current operating requirements into at least 2027. Conference Call and Webcast Fulcrum Therapeutics, Inc. will host a conference call and webcast today at 8:00 a.m. ET to review the third quarter 2024 financial results and recent business highlights. Individuals may register for the conference call by clicking the link here. Once registered, participants will receive dial-in details and unique PIN which will allow them to access the call. An audio webcast will be accessible through the Investor Relations section of Fulcrum's website at www.fulcrumtx.com or by clicking here. Following the live webcast, an archived replay will also be available. About Fulcrum Therapeutics Fulcrum Therapeutics is a clinical-stage biopharmaceutical company focused on developing small molecules to improve the lives of patients with genetically defined rare diseases in areas of high unmet medical need. Fulcrum’s lead program in clinical development is pociredir, a small molecule designed to increase expression of fetal hemoglobin and in development for the treatment of SCD. Fulcrum uses proprietary technology to identify drug targets that can modulate gene expression to treat the known root cause of gene mis-expression. For more information, visit www.fulcrumtx.com and follow us on Twitter/X (@FulcrumTx) and LinkedIn. About Pociredir Pociredir is an investigational oral small-molecule inhibitor of Embryonic Ectoderm Development (EED) that was discovered using Fulcrum’s proprietary discovery technology. Inhibition of EED leads to potent downregulation of key fetal globin repressors, including BCL11A, thereby causing an increase in fetal hemoglobin (HbF). Pociredir is being developed for the treatment of SCD. Initial data in SCD demonstrated proof-of-concept and achieved absolute levels of HbF increases associated with potential overall patient benefit. In clinical trials conducted prior to the clinical hold, which was lifted by the FDA in August 2023, pociredir was generally well-tolerated in people with SCD with up to three months of exposure, with no serious treatment-related adverse events reported. Pociredir has been granted FDA Fast Track designation and Orphan Drug Designation for the treatment of SCD. To learn more about these trials please visit ClinicalTrials.gov. 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 cells. People with SCD 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. 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. All statements, other than statements of historical facts, contained in this press release are forward-looking statements, including express or implied statements regarding Fulcrum’s Phase 1b PIONEER clinical trial of pociredir, including status of enrollment, number of patients per cohort and planned data announcement for such trial; the potential of pociredir to increase fetal hemoglobin to levels that could ameliorate symptoms of SCD; resumption of Phase 1 clinical studies in healthy volunteers ; Fulcrum’s ability to progress its early stage development programs; the effects of the reduction in workforce; and its projected year end cash position, cash runway and cash burn for 2025, among others. 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 continue to advance its product candidates in clinical trials; initiating and enrolling clinical trials on the timeline expected or at all; obtaining and maintaining necessary approvals from the FDA and other regulatory authorities; replicating in clinical trials positive results found in preclinical studies and/or earlier-stage clinical trials; obtaining, maintaining or protecting intellectual property rights related to its product candidates; managing expenses; realize the anticipated benefits of the workforce reduction and strategic realignment and managing risks associated therewith; and raising the substantial additional capital needed to achieve its business objectives, among others. For a discussion of other risks and uncertainties, and other important factors, any of which could cause Fulcrum’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 Fulcrum’s most recent filings with the Securities and Exchange Commission. In addition, the forward-looking statements included in this press release represent Fulcrum’s views as of the date hereof and should not be relied upon as representing Fulcrum’s views as of any date subsequent to the date hereof. Fulcrum anticipates that subsequent events and developments will cause Fulcrum’s views to change. However, while Fulcrum may elect to update these forward-looking statements at some point in the future, Fulcrum specifically disclaims any obligation to do so. Fulcrum Therapeutics, Inc. Selected Consolidated Balance Sheet Data (In thousands) (Unaudited) September 30, 2024 December 31, 2023 Cash, cash equivalents, and marketable securities $257,234 $236,221 Working capital(1) 252,980 228,524 Total assets 279,008 257,694 Total stockholders’ equity 257,291 235,193 (1) Fulcrum defines working capital as current assets minus current liabilities. Fulcrum Therapeutics, Inc. Consolidated Statements of Operations(In thousands, except per share data) (Unaudited) Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 Collaboration revenue $— $759 $80,000 $1,934 Operating expenses: Research and development 14,639 18,238 51,673 52,802 General and administrative 8,424 9,961 28,732 31,804 Restructuring expenses 2,063 — 2,063 — Total operating expenses 25,126 28,199 82,468 84,606 Loss from operations (25,126) (27,440) (2,468) (82,672)Other income, net 3,430 3,423 9,311 10,093 Net (loss) income $(21,696) $(24,017) $6,843 $(72,579)Net (loss) income per share, basic $(0.35) $(0.39) $0.11 $(1.19)Net (loss) income per share, diluted $(0.35) $(0.39) $0.11 $(1.19)Weighted-average common shares outstanding, basic 62,409 61,823 62,200 61,121 Weighted-average common shares outstanding, diluted 62,409 61,823 63,688 61,121 Contact: Chris Calabrese LifeSci Advisors, LLC ccalabrese@lifesciadvisors.com 917-680-5608

Phase 1Financial StatementFast TrackOrphan DrugPhase 2

13 Nov 2024

·ir.fulcrumtx.com

Fulcrum Therapeutics Announces Recent Business Highlights and Financial Results for Third Quarter 2024

― Patient enrollment and site activation progressing in Phase 1b PIONEER trial of pociredir in sickle cell disease (SCD) ― ― Ended the third quarter of 2024 with $257.2 million in cash, cash equivalents, and marketable securities; cash runway into at least 2027 ― ― Conference call and webcast scheduled for 8:00 a.m. ET today ― CAMBRIDGE, Mass., Nov. 13, 2024 (GLOBE NEWSWIRE) -- Fulcrum Therapeutics, Inc.® (Fulcrum) (Nasdaq: FULC), a clinical-stage biopharmaceutical company focused on developing small molecules to improve the lives of patients with genetically defined rare diseases, today reported financial results for the third quarter of 2024 as well as a business update. “In the third quarter, we made progress enrolling patients and activating new sites in the Phase 1b PIONEER trial of pociredir in sickle cell disease and advancing our preclinical pipeline,” said Alex C. Sapir, Fulcrum’s president and chief executive officer. “The need for effective therapeutic options for patients with sickle cell disease has become even more urgent due to the recent withdrawal of OXBRYTA® globally. Based on the initial data generated in the Phase 1b trial, we believe that pociredir has the potential to increase fetal hemoglobin to levels that could ameliorate symptoms of sickle cell disease. While we were disappointed with the results of the Phase 3 REACH trial announced in September, we remain committed to improving the lives of patients with genetically defined diseases in areas of high unmet medical need like sickle cell disease. We are focused on progressing the development of pociredir as expeditiously as possible and remain on track to provide data from the PIONEER trial in 2025.” Recent Business Highlights Patient enrollment and site activations continue to progress in the Phase 1b PIONEER trial evaluating pociredir in patients with SCD. Cohort 3 of the Phase 1b trial is evaluating pociredir at the 12 mg once daily dose, which will be followed by Cohort 4 at the 20 mg once daily dose. Each cohort is expected to enroll up to 10 patients. Fulcrum plans to share clinical data from the PIONEER trial in 2025. Following recent interactions with the FDA, Fulcrum plans to initiate Phase 1 clinical studies in healthy volunteers in support of the overall pociredir development program. Following the REACH trial results disclosed in September 2024, Fulcrum suspended development of losmapimod and has focused its research and development activities on advancing pociredir for the treatment of SCD, as well as advancing novel therapeutic agents for the potential treatment of inherited aplastic anemias, such as Diamond-Blackfan anemia, Shwachman-Diamond syndrome, and Fanconi anemia, and its early discovery programs. Third Quarter 2024 Financial Results Cash Position: As of September 30, 2024, cash, cash equivalents, and marketable securities were $257.2 million, as compared to $236.2 million as of December 31, 2023. The increase is due to the $80.0 million upfront payment received from Sanofi in the second quarter of 2024, partially offset by cash used to fund operating activities in 2024. Collaboration Revenue: Collaboration revenue was zero for the three months ended September 30, 2024, as compared to $0.8 million for the three months ended September 30, 2023. The decrease of $0.8 million was due to the completion of research services under the collaboration agreement with MyoKardia during the fourth quarter of 2023. R&D Expenses: Research and development expenses were $14.6 million for the three months ended September 30, 2024, as compared to $18.2 million for the three months ended September 30, 2023. The decrease of $3.6 million was primarily due to the reimbursement from the global development cost sharing under the collaboration with Sanofi for losmapimod, partially offset by increased costs related to the advancement of the Phase 1b PIONEER trial. G&A Expenses: General and administrative expenses were $8.4 million for the three months ended September 30, 2024, as compared to $10.0 million for three months ended September 30, 2023. The decrease of $1.6 million was primarily due to decreased employee compensation costs as a result of the reduction in workforce implemented in the third quarter of 2024. Net Loss: Net loss was $21.7 million for the three months ended September 30, 2024, as compared to a net loss of $24.0 million for the three months ended September 30, 2023. Cash Guidance Based on its current operating plans, Fulcrum expects to end 2024 with approximately $240.0 million of cash, cash equivalents, and marketable securities, and expects its cash burn for the full year 2025 will be approximately $55.0 million to $65.0 million. Fulcrum also expects that its cash, cash equivalents, and marketable securities as of September 30, 2024 will be sufficient to fund its current operating requirements into at least 2027. Conference Call and Webcast Fulcrum Therapeutics, Inc. will host a conference call and webcast today at 8:00 a.m. ET to review the third quarter 2024 financial results and recent business highlights. Individuals may register for the conference call by clicking the link here. Once registered, participants will receive dial-in details and unique PIN which will allow them to access the call. An audio webcast will be accessible through the Investor Relations section of Fulcrum's website at www.fulcrumtx.com or by clicking here. Following the live webcast, an archived replay will also be available. About Fulcrum Therapeutics Fulcrum Therapeutics is a clinical-stage biopharmaceutical company focused on developing small molecules to improve the lives of patients with genetically defined rare diseases in areas of high unmet medical need. Fulcrum’s lead program in clinical development is pociredir, a small molecule designed to increase expression of fetal hemoglobin and in development for the treatment of SCD. Fulcrum uses proprietary technology to identify drug targets that can modulate gene expression to treat the known root cause of gene mis-expression. For more information, visit www.fulcrumtx.com and follow us on Twitter/X (@FulcrumTx) and LinkedIn. About Pociredir Pociredir is an investigational oral small-molecule inhibitor of Embryonic Ectoderm Development (EED) that was discovered using Fulcrum’s proprietary discovery technology. Inhibition of EED leads to potent downregulation of key fetal globin repressors, including BCL11A, thereby causing an increase in fetal hemoglobin (HbF). Pociredir is being developed for the treatment of SCD. Initial data in SCD demonstrated proof-of-concept and achieved absolute levels of HbF increases associated with potential overall patient benefit. In clinical trials conducted prior to the clinical hold, which was lifted by the FDA in August 2023, pociredir was generally well-tolerated in people with SCD with up to three months of exposure, with no serious treatment-related adverse events reported. Pociredir has been granted FDA Fast Track designation and Orphan Drug Designation for the treatment of SCD. To learn more about these trials please visit ClinicalTrials.gov. 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 cells. People with SCD 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. 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. All statements, other than statements of historical facts, contained in this press release are forward-looking statements, including express or implied statements regarding Fulcrum’s Phase 1b PIONEER clinical trial of pociredir, including status of enrollment, number of patients per cohort and planned data announcement for such trial; the potential of pociredir to increase fetal hemoglobin to levels that could ameliorate symptoms of SCD; resumption of Phase 1 clinical studies in healthy volunteers ; Fulcrum’s ability to progress its early stage development programs; the effects of the reduction in workforce; and its projected year end cash position, cash runway and cash burn for 2025, among others. 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 continue to advance its product candidates in clinical trials; initiating and enrolling clinical trials on the timeline expected or at all; obtaining and maintaining necessary approvals from the FDA and other regulatory authorities; replicating in clinical trials positive results found in preclinical studies and/or earlier-stage clinical trials; obtaining, maintaining or protecting intellectual property rights related to its product candidates; managing expenses; realize the anticipated benefits of the workforce reduction and strategic realignment and managing risks associated therewith; and raising the substantial additional capital needed to achieve its business objectives, among others. For a discussion of other risks and uncertainties, and other important factors, any of which could cause Fulcrum’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 Fulcrum’s most recent filings with the Securities and Exchange Commission. In addition, the forward-looking statements included in this press release represent Fulcrum’s views as of the date hereof and should not be relied upon as representing Fulcrum’s views as of any date subsequent to the date hereof. Fulcrum anticipates that subsequent events and developments will cause Fulcrum’s views to change. However, while Fulcrum may elect to update these forward-looking statements at some point in the future, Fulcrum specifically disclaims any obligation to do so. (1) Fulcrum defines working capital as current assets minus current liabilities. Contact: Chris Calabrese LifeSci Advisors, LLC ccalabrese@lifesciadvisors.com 917-680-5608

Phase 1Financial StatementFast TrackOrphan DrugPhase 2

100 Deals associated with Losmapimod

External Link

KEGG	Wiki	ATC	Drug Bank
D09639	Losmapimod	-	DB12270

R&D Status

10 top R&D records.

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Indication	Highest Phase	Country/Location	Organization	Date
Muscular Dystrophy, Facioscapulohumeral	Phase 3	United States	Fulcrum Therapeutics, Inc.	16 Jun 2022
Muscular Dystrophy, Facioscapulohumeral	Phase 3	Canada	Fulcrum Therapeutics, Inc.	16 Jun 2022
Muscular Dystrophy, Facioscapulohumeral	Phase 3	Denmark	Fulcrum Therapeutics, Inc.	16 Jun 2022
Muscular Dystrophy, Facioscapulohumeral	Phase 3	France	Fulcrum Therapeutics, Inc.	16 Jun 2022
Muscular Dystrophy, Facioscapulohumeral	Phase 3	Germany	Fulcrum Therapeutics, Inc.	16 Jun 2022
Muscular Dystrophy, Facioscapulohumeral	Phase 3	Italy	Fulcrum Therapeutics, Inc.	16 Jun 2022
Muscular Dystrophy, Facioscapulohumeral	Phase 3	Netherlands	Fulcrum Therapeutics, Inc.	16 Jun 2022
Muscular Dystrophy, Facioscapulohumeral	Phase 3	Spain	Fulcrum Therapeutics, Inc.	16 Jun 2022
Muscular Dystrophy, Facioscapulohumeral	Phase 3	United Kingdom	Fulcrum Therapeutics, Inc.	16 Jun 2022
COVID-19	Phase 3	United States	Fulcrum Therapeutics, Inc.	28 Aug 2020

Clinical Result

Indication

Phase

Evaluation

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Study	Phase	Population	Analyzed Enrollment	Group	Results	Evaluation	Publication Date


NCT05397470 (REACH, GlobeNewswire) Manual	Phase 3	Muscular Dystrophy, Facioscapulohumeral	260	Losmapimod 15 mg	bzwqyaqbsc(tudtpbtogn) = zkfdadfgad coufdoqeoe (wxgzookcaq ) View more	Negative	12 Sep 2024
				Placebo	bzwqyaqbsc(tudtpbtogn) = pavyvpbkwn coufdoqeoe (wxgzookcaq ) View more
NCT04003974 (FSHD \| ReDUX4, CTgov)	Phase 2	Muscular Dystrophy, Facioscapulohumeral	80	Placebo oral tablet	vhfrsxhaor(mlcrlgwhwf) = mywpcvppxf klblpkxttm (rzgxcxoumi, 0.6491) View more	-	10 Jul 2024
NCT04511819 (LOSVID, CTgov)	Phase 3	COVID-19	52	Placebo oral tablet	xiqggzyofu = wmnuqeaaks krippjwyeq (sgsrwznfpp, mvcbvmfnxf - npnhdtcpab) View more	-	13 Mar 2024
AAN2023	Phase 2	Muscular Dystrophy, Facioscapulohumeral	-	Losmapimod 15 mg	omymhnkvlp(iytnlgihaj) = ofdmgsnarl qxadzobfaj (bnnnbudarf ) View more	Positive	25 Apr 2023
				Placebo	omymhnkvlp(iytnlgihaj) = pahldvfrye qxadzobfaj (bnnnbudarf ) View more
NCT04264442 (ReDUX4, MDA2023) Manual	Phase 2	Muscular Dystrophy, Facioscapulohumeral	74	Losmapimod 15 mg (LOS/LOS)	jfjbtvaklj(zykqzukmjp) = Fall (22.4%), headache (14.5%), arthralgia (7.9%), and back pain (7.9%) pfmwykezmv (bjrnidjuum ) View more	Positive	19 Mar 2023
				Placebo+Losmapimod 15 mg (PBO/LOS)
NCT04003974 \| NCT04264442 (ReDUX4, MDA2022)	Phase 2	Muscular Dystrophy, Facioscapulohumeral	80	Losmapimod 15 mg	jbmuvzvwle(uxkqimcxhp) = the losmapimod arm had either improvements or no worsening, particularly in Q1 and Q3 (above shoulder), and Q5 (posterior inferior) xrfjlcxgwe (xdnrukevgs )	-	13 Mar 2022
				Placebo
NCT04003974 \| NCT04264442 (ReDUX4, MDA2022)	Phase 2	Muscular Dystrophy, Facioscapulohumeral	-	Losmapimod 15 mg	ktmomvnsyu(otctfbvuly) = jcrmgmhsox clkfsvmfff (qqggzqogdn ) View more	-	13 Mar 2022
				Placebo	ktmomvnsyu(otctfbvuly) = tiyscuokcs clkfsvmfff (qqggzqogdn ) View more
NL8000 (NL68539.056.18, Pubmed \| Br J Clin Pharmacol)	Phase 1	Muscular Dystrophy, Facioscapulohumeral	-	Losmapimod 7.5 mg	izwpegpwoc(txsjgbyayr) = were mild and self-limited xhynoitmhz (riggjdjhgp )	-	30 Apr 2021
				Losmapimod 15 mg
NCT04003974 (ReDUX4, Corporate Publications) Manual	Phase 2	Muscular Dystrophy, Facioscapulohumeral DUX4-driven gene Expression	29	Losmapimod	oondivitcn(aykzljycif) = Losmapimod arm:-38 fold（in 3 muscle biopsies pts）；+3.7 fold（in all 15 pts); Placebo:-5.4 fold（in 5 muscle biopsies pts）；+2.8 fold（in all 14 pts） udsncclvqp (pduamlhpbb )	Positive	11 Aug 2020
				Placebo
AAN2020	Phase 1	Muscular Dystrophy, Facioscapulohumeral DUX4	-	Losmapimod 7.5 mg	ujjfmjvken(hgnxkojawh) = leqxltxscb mnjyibvltv (zlafbdcgip )	Positive	14 Apr 2020
				Losmapimod 15 mg	ujjfmjvken(hgnxkojawh) = thkurzbzam mnjyibvltv (zlafbdcgip )

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