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RedHill Announces Collaboration with a Leading U.S. Academic Medical Center to Develop Opaganib as a Countermeasure Against Phosgene Inhalation Injury

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RedHill Biopharma (Nasdaq: RDHL) has announced a collaboration with Duke University School of Medicine to develop opaganib as a potential countermeasure against phosgene inhalation injury. The research aims to advance opaganib into U.S. government-sponsored development under the FDA's Animal Rule pathway to approval.

Phosgene, a toxic chemical used in industrial processes, poses a significant risk to public safety. The EPA has identified 123 sites in the U.S. that could potentially expose millions to phosgene. Currently, there is no approved antidote for phosgene inhalation injury, which can cause severe respiratory damage.

Opaganib, RedHill's novel, host-directed drug, is being developed for various indications, including chemical and nuclear/radioprotection. The collaboration with Duke University aims to determine if opaganib can provide protection against phosgene-induced damage and potentially be stockpiled for emergency use.

RedHill Biopharma (Nasdaq: RDHL) ha annunciato una collaborazione con la Duke University School of Medicine per sviluppare opaganib come possibile contromisura contro le lesioni da inalazione di fosgene. La ricerca mira a portare opaganib nello sviluppo sponsorizzato dal governo degli Stati Uniti tramite il percorso FDA's Animal Rule per l'approvazione.

Il fosgene, una sostanza chimica tossica utilizzata nei processi industriali, rappresenta un rischio significativo per la sicurezza pubblica. L'EPA ha identificato 123 siti negli Stati Uniti che potrebbero potenzialmente esporre milioni di persone al fosgene. Attualmente, non esiste un antidoto approvato per le lesioni da inalazione di fosgene, che possono causare gravi danni respiratori.

Opaganib, il nuovo farmaco diretto all'ospite di RedHill, è in fase di sviluppo per varie indicazioni, inclusa la protezione chimica e nucleare/radioprotezione. La collaborazione con la Duke University mira a determinare se opaganib può offrire protezione contro i danni indotti dal fosgene e potenzialmente essere immagazzinato per un uso di emergenza.

RedHill Biopharma (Nasdaq: RDHL) ha anunciado una colaboración con la Duke University School of Medicine para desarrollar opaganib como un posible contramedida contra la lesión por inhalación de fosgeno. La investigación busca avanzar opaganib en el desarrollo patrocinado por el gobierno de EE. UU. a través de la vía de aprobación Animal Rule de la FDA.

El fosgeno, un químico tóxico utilizado en procesos industriales, representa un riesgo significativo para la seguridad pública. La EPA ha identificado 123 sitios en EE. UU. que podrían exponer potencialmente a millones de personas al fosgeno. Actualmente, no existe un antídoto aprobado para la lesión por inhalación de fosgeno, que puede causar daños respiratorios severos.

Opaganib, el novedoso fármaco dirigido al huésped de RedHill, se está desarrollando para diversas indicaciones, incluida la protección química y nuclear/radioprotección. La colaboración con la Duke University tiene como objetivo determinar si opaganib puede proporcionar protección contra los daños inducidos por el fosgeno y potencialmente ser almacenado para su uso en emergencias.

레드힐 바이오파마(RedHill Biopharma) (나스닥: RDHL)가 듀크 대학교 의과대학(Duke University School of Medicine)과 협력하여 오파가닙(opaganib)을 포스겐 흡입 손상에 대한 잠재적 대책으로 개발한다고 발표했습니다. 이 연구의 목표는 FDA의 동물 규칙(Animal Rule) 경로를 통해 오파가닙이 미국 정부의 지원 개발로 진행되도록 하는 것입니다.

포스겐은 산업 공정에 사용되는 유독 화학물질로, 공공 안전에 큰 위험을 초래합니다. EPA는 미국 내에서 수백만 명을 포스겐에 노출시킬 수 있는 123개 지역을 확인했습니다. 현재 포스겐 흡입 손상에 대한 승인된 해독제가 존재하지 않으며, 이는 심각한 호흡기 손상을 초래할 수 있습니다.

오파가닙은 레드힐의 새로운 숙주 지향 약물로, 화학 및 핵 방호를 포함한 여러 적응증을 위해 개발되고 있습니다. 듀크 대학교와의 협력은 오파가닙이 포스겐으로 인한 손상으로부터 보호할 수 있는지 여부를 확인하고, 비상시에 사용하기 위해 비축될 수 있는지를 탐색하는 것을 목표로 합니다.

RedHill Biopharma (Nasdaq: RDHL) a annoncé une collaboration avec la Duke University School of Medicine pour développer opaganib comme une contre-mesure potentielle contre les blessures par inhalation de phosgène. La recherche vise à faire progresser opaganib dans le développement soutenu par le gouvernement américain selon le processus Animal Rule de la FDA pour l'approbation.

Le phosgène, une substance chimique toxique utilisée dans les processus industriels, représente un risque important pour la sécurité publique. L'EPA a identifié 123 sites aux États-Unis qui pourraient potentiellement exposer des millions de personnes au phosgène. Actuellement, il n'existe pas d'antidote approuvé pour les blessures par inhalation de phosgène, qui peuvent causer de graves dommages respiratoires.

Opaganib, le nouveau médicament host-directed de RedHill, est en cours de développement pour diverses indications, y compris la protection chimique et nucléaire/radioprotection. La collaboration avec la Duke University vise à déterminer si opaganib peut offrir une protection contre les dommages induits par le phosgène et potentiellement être stocké pour une utilisation d'urgence.

RedHill Biopharma (Nasdaq: RDHL) hat eine Zusammenarbeit mit der Duke University School of Medicine angekündigt, um opaganib als potenzielle Gegenmaßnahme gegen Phosgen-Inhalationsverletzungen zu entwickeln. Die Forschung zielt darauf ab, opaganib in die staatlich geförderte Entwicklung in den USA gemäß dem FDA Animal Rule-Prozess zur Genehmigung voranzutreiben.

Phosgen, ein giftiger chemischer Stoff, der in industriellen Prozessen verwendet wird, stellt ein erhebliches Risiko für die öffentliche Sicherheit dar. Die EPA hat 123 Standorte in den USA identifiziert, die potenziell Millionen von Menschen Phosgen aussetzen könnten. Derzeit gibt es kein zugelassenes Gegenmittel für Inhalationsverletzungen durch Phosgen, das schwere Atemschäden verursachen kann.

Opaganib, das neuartige, wirtsgerichtete Medikament von RedHill, wird für verschiedene Indikationen entwickelt, darunter chemische und nukleare/radiologische Schutzmaßnahmen. Die Zusammenarbeit mit der Duke University zielt darauf ab, herauszufinden, ob opaganib Schutz gegen phosgeninduzierte Schäden bieten kann und möglicherweise für den Notfallvorrat angelegt werden kann.

Positive
  • Collaboration with Duke University School of Medicine to develop opaganib as a countermeasure against phosgene inhalation injury
  • Potential for opaganib to advance into U.S. government-sponsored development under FDA's Animal Rule pathway
  • Opaganib's potential to be stockpiled for emergency use in case of public safety incidents
  • Multiple U.S. government collaborations for chemical and medical countermeasures and pandemic preparedness
Negative
  • None.

Insights

This collaboration between RedHill Biopharma and Duke University School of Medicine to develop opaganib as a potential countermeasure against phosgene inhalation injury is a significant step in addressing an unmet medical need. Key points to consider:

  • Phosgene is a highly toxic chemical with no current approved antidote, posing a serious public health risk.
  • The research leverages the FDA's Animal Rule pathway, which is important for developing treatments for conditions where human trials are unethical or unfeasible.
  • If successful, opaganib could become a stockpiled emergency treatment, potentially saving lives in case of industrial accidents or bioterrorism events.

The collaboration's focus on multiple in vivo studies suggests a comprehensive approach to testing opaganib's efficacy. The involvement of a leading academic institution adds credibility to the research. However, investors should note that drug development under the Animal Rule pathway can be complex and time-consuming, with no guarantee of success. The potential market for such a treatment would likely be to government contracts and stockpiling, rather than widespread commercial use.

The development of opaganib as a countermeasure against phosgene inhalation injury addresses a critical gap in chemical safety preparedness. Consider these factors:

  • The EPA has identified 123 sites in the U.S. that pose potential phosgene exposure risks, highlighting the scale of the threat.
  • Global production of phosgene exceeds 12 million metric tons annually, underscoring its widespread industrial use and the associated risks.
  • The lack of an existing antidote makes this research particularly valuable for public safety and emergency response protocols.

The collaboration's focus on developing a treatment that could be stockpiled for emergency use aligns with national security interests. This could lead to significant government contracts if opaganib proves effective. However, the success of this venture depends on the outcome of animal studies and subsequent regulatory approvals, which can be a lengthy and uncertain process. Investors should view this as a long-term, high-risk, high-reward opportunity within RedHill's portfolio.

The collaboration outlines plans for multiple in vivo studies, designed to test opaganib as a potential medical countermeasure to treat phosgene inhalation injury. The collaboration aims to determine whether opaganib can advance into further definitive U.S. government-sponsored development under the FDA's Animal Rule pathway to approval

Used as a chemical weapon during World War I, phosgene, a toxic, colorless chemical, is today widely used in industrial processes for the manufacture of plastics and pesticides. The U.S. Environmental Protection Agency (EPA) identified 123 sites in the United States that could potentially expose millions of people to phosgene due to plant malfunction or bioterrorism[1]

Phosgene inhalation can be extremely dangerous, causing significant, even fatal, respiratory injury. No known approved antidote or reversal agent currently exists, and, if approved, opaganib may provide potential for stockpiling for emergency use in the event of a major public safety incident

With multiple U.S. government collaborations for chemical and medical countermeasures and pandemic preparedness, RedHill's opaganib is a novel, host-directed, potentially broad acting, orally administered small molecule, clinical-stage drug with demonstrated safety & efficacy profiles, being developed for various oncology, viral infections, inflammatory diseases and chemical and nuclear/radioprotection indications

TEL AVIV, Israel and RALEIGH, N.C., Oct. 22, 2024 /PRNewswire/ -- RedHill Biopharma Ltd. (Nasdaq: RDHL) ("RedHill" or the "Company"), a specialty biopharmaceutical company, today announced the signing of a collaborative research agreement with Duke University School of Medicine outlining plans for multiple in vivo studies. The program is designed to test opaganib[2] as a potential medical countermeasure to treat phosgene inhalation injury, aimed at providing results sufficient to advance opaganib into further definitive U.S. government-sponsored development under the U.S. Food and Drug Administration's (FDA) Animal Rule pathway to approval. The FDA Animal Rule allows for the use of pivotal animal model efficacy studies to support FDA approval of new drugs when human clinical trials are not ethical or feasible. Under this research agreement, RedHill will provide required drug quantities for animal studies, analytical support to quantify drug concentrations in plasma samples, and share dosing regimen with the Achanta Lab at Duke University.

 

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"Opaganib is currently being tested, by various governmental research bodies, in multiple areas that urgently require new chemical and medical countermeasure therapeutic options," said Dr. Satya Achanta, D.V.M., Ph.D., Assistant Professor in the Department of Anesthesiology at Duke University School of Medicine. "Our research will help determine whether there is a potential protective role of opaganib in limiting damage caused by phosgene inhalation."

"Notably used as a chemical weapon during World War I, phosgene, a toxic, colorless chemical, is today widely used in industrial processes for the manufacture of plastics and pesticides. The U.S. Environmental Protection Agency (EPA) identified 123 sites in the United States that could expose millions of people to phosgene potentially due to plant malfunction or bioterrorism," said Gilead Raday, RedHill's Chief Operating Officer and Head of Research and Development. "This exciting collaboration with Duke University School of Medicine could pave the way to a potential therapy for the acute respiratory distress syndrome (ARDS) phosgene inhalation can cause, which can be extremely dangerous, causing significant, even fatal, injury. No known approved antidote or reversal agent currently exists, and, if approved, opaganib may provide potential for stockpiling for emergency use in the event of a major public safety incident."

What is Phosgene inhalation injury

Phosgene inhalation injury occurs when someone breathes in phosgene gas (COCl₂), a toxic chemical primarily used in industrial processes. Phosgene has a distinct odor, similar to freshly mown grass or hay. However, only 10% of the population may detect this odor at lower concentrations. The combination of its unassuming odor and poor human detection makes phosgene particularly dangerous. At higher concentrations, it is extremely dangerous, even fatal, and is a cause of acute respiratory distress syndrome (ARDS). It is believed that no antidotes or reversal agents exist at this time. Phosgene was notably used as a chemical weapon during World War I.

Today, phosgene use in industry is ubiquitous - being used in the production of polymers, plastics and pesticides. Global estimates indicate that more than 12 million metric tons are produced annually[3]. Despite its widespread use, some regions poorly regulate its production, and concern exists for its potential as a weapon of bioterrorism. Given its severe toxicity and high mortality, research is primarily limited to an Animal Rule pathway to approval, which allows for the use of pivotal animal model efficacy studies to support FDA approval of new drugs when human clinical trials are not ethical or feasible.

The EPA identified 123 sites in the United States that could expose millions of people to phosgene if the plant malfunctions or becomes a target of bioterrorism.

About Opaganib (ABC294640)

Opaganib, a proprietary investigational host-directed and potentially broad-acting drug, is a first-in-class, orally administered sphingosine kinase-2 (SPHK2) selective inhibitor with anticancer, anti-inflammatory and antiviral activity, targeting multiple potential indications, including several cancers, diabetes and obesity-related disorders, gastrointestinal acute radiation syndrome (GI-ARS), Sulfur Mustard exposure, COVID-19, Ebola and other viruses as part of pandemic preparedness.

Opaganib's host-directed action is thought to work through the inhibition of multiple pathways, the induction of autophagy and apoptosis, and disruption of viral replication, through simultaneous inhibition of three sphingolipid-metabolizing enzymes in human cells (SPHK2, DES1 and GCS).

Several U.S. government countermeasures and pandemic preparedness programs have selected opaganib for evaluation for multiple indications, including Acute Radiation Syndrome (ARS), Ebola virus disease and others Funding bodies include the Radiation and Nuclear Countermeasures Program (RNCP), led by the National Institute of Allergy and Infectious Diseases (NIAID), part of the U.S. government Department of Health & Human Services' National Institutes of Health and the Administration for Strategic Preparedness and Response's (ASPR) Center for Biomedical Advanced Research and Development Authority (BARDA).

Opaganib has demonstrated antiviral activity against SARS-CoV-2, multiple variants, and several other viruses, such as Influenza A and Ebola. Opaganib delivered a statistically significant increase in survival time when given at 150 mg/kg twice a day (BID) in a United States Army Medical Research Institute of Infectious Diseases (USAMRIID) in vivo Ebola virus study, making it the first host-directed molecule to show activity in Ebola virus disease. Opaganib also recently demonstrated a distinct synergistic effect when combined individually with remdesivir (Veklury®, Gilead Sciences Inc.), significantly improving potency while maintaining cell viability, in a U.S. Army-funded and conducted in vitro Ebola virus study.

Being host-targeted, and based on data accumulated to date, opaganib is expected to maintain effect against emerging viral variants. In prespecified analyses of Phase 2/3 clinical data in hospitalized patients with moderate to severe COVID-19, oral opaganib demonstrated improved viral RNA clearance, faster time to recovery and significant mortality reduction in key patient subpopulations versus placebo on top of standard of care. Opaganib has demonstrated its safety and tolerability profile in more than 470 people in multiple clinical studies and expanded access use. Data from the opaganib global Phase 2/3 study was published in Microorganisms.

Opaganib has received several orphan-drug designations from the FDA in oncology and other diseases and has undergone studies in advanced cholangiocarcinoma (Phase 2a) and prostate cancer. Opaganib also has a Phase 1 chemoradiotherapy study protocol ready for FDA-IND submission.

Opaganib has also shown positive preclinical results in renal fibrosis, and has the potential to target multiple oncology, radioprotection, viral, inflammatory, and gastrointestinal indications.

About RedHill Biopharma 

RedHill Biopharma Ltd. (Nasdaq: RDHL) is a specialty biopharmaceutical company primarily focused on gastrointestinal and infectious diseases. RedHill promotes the gastrointestinal drug Talicia®, for the treatment of Helicobacter pylori (H. pylori) infection in adults[4]. RedHill's key clinical late-stage development programs include: (i) opaganib (ABC294640), a first-in-class oral broad-acting, host-directed SPHK2 selective inhibitor with potential for chemical and medical countermeasure and pandemic preparedness use, targeting multiple indications with a U.S. government collaboration for development for Acute Radiation Syndrome (ARS), a Phase 2/3 program for hospitalized COVID-19, and a Phase 2 program in oncology; (ii) RHB-107 (upamostat), an oral broad-acting, host-directed, serine protease inhibitor with potential for pandemic preparedness is in late-stage development as a treatment for non-hospitalized symptomatic COVID-19, with non-dilutive external funding covering the entirety of the RHB-107 arm of the 300-patient Phase 2 adaptive platform trial, and is also targeting multiple other cancer and inflammatory gastrointestinal diseases; (iii) RHB-102, with potential UK submission for chemotherapy and radiotherapy induced nausea and vomiting, positive results from a Phase 3 study for acute gastroenteritis and gastritis and positive results from a Phase 2 study for IBS-D; (iv) RHB-104, with positive results from a first Phase 3 study for Crohn's disease; and (v) RHB-204, a Phase 3-stage program for pulmonary nontuberculous mycobacteria (NTM) disease.

More information about the Company is available at www.redhillbio.com / X.com/RedHillBio.

Forward-Looking Statements

This press release contains "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995 and may discuss investment opportunities, stock analysis, financial performance, investor relations, and market trends. Such statements may be preceded by the words "intends," "may," "will," "plans," "expects," "anticipates," "projects," "predicts," "estimates," "aims," "believes," "hopes," "potential" or similar words and include, among others, statements regarding the potential effects of opaganib in the treatment of phosgene inhalation injury. Forward-looking statements are based on certain assumptions and are subject to various known and unknown risks and uncertainties, many of which are beyond the Company's control and cannot be predicted or quantified, and consequently, actual results may differ materially from those expressed or implied by such forward-looking statements. Such risks and uncertainties include, without limitation: market and other conditions; the Company's ability to maintain compliance with the Nasdaq Capital Market's listing requirements; the risk that the addition of new revenue generating products or out-licensing transactions will not occur; the risk that acceptance onto the RNCP Product Development Pipeline will not guarantee ongoing development or that any such development will not be completed or successful; the risk that the FDA does not agree with the Company's proposed development plans for opaganib for any indication; the risk that observations from preclinical studies are not indicative or predictive of results in clinical trials; the risk that the FDA pre-study requirements will not be met and/or that the Phase 3 study of RHB-107 in COVID-19 outpatients will not be approved to commence or if approved, will not be completed or, should that be the case, that we will not be successful in obtaining alternative non-dilutive development funding for RHB-107; the risk that RHB-107's late-stage development for non-hospitalized COVID-19 will not benefit from the resources redirected from the terminated RHB-204 Phase 3 study, and that the Phase 2/3 COVID-19 study for RHB-107 may not be successful and, even if successful, such studies and results may not be sufficient for regulatory applications, including emergency use or marketing applications, and that additional COVID-19 studies for opaganib and RHB-107 are likely to be required; the risk that the Company will not successfully commercialize its products; as well as risks and uncertainties associated with (i) the initiation, timing, progress and results of the Company's research, manufacturing, pre-clinical studies, clinical trials, and other therapeutic candidate development efforts, and the timing of the commercial launch of its commercial products and ones it may acquire or develop in the future; (ii) the Company's ability to advance its therapeutic candidates into clinical trials or to successfully complete its pre-clinical studies or clinical trials or the development of a commercial companion diagnostic for the detection of MAP; (iii) the extent and number and type of additional studies that the Company may be required to conduct and the Company's receipt of regulatory approvals for its therapeutic candidates, and the timing of other regulatory filings, approvals and feedback; (iv) the manufacturing, clinical development, commercialization, and market acceptance of the Company's therapeutic candidates and Talicia®; (v) the Company's ability to successfully commercialize and promote Talicia® and Aemcolo®; (vi) the Company's ability to establish and maintain corporate collaborations; (vii) the Company's ability to acquire products approved for marketing in the U.S. that achieve commercial success and build its own marketing and commercialization capabilities; (viii) the interpretation of the properties and characteristics of the Company's therapeutic candidates and the results obtained with its therapeutic candidates in research, pre-clinical studies or clinical trials; (ix) the implementation of the Company's business model, strategic plans for its business and therapeutic candidates; (x) the scope of protection the Company is able to establish and maintain for intellectual property rights covering its therapeutic candidates and its ability to operate its business without infringing the intellectual property rights of others; (xi) parties from whom the Company licenses its intellectual property defaulting in their obligations to the Company; (xii) estimates of the Company's expenses, future revenues, capital requirements and needs for additional financing; (xiii) the effect of patients suffering adverse experiences using investigative drugs under the Company's Expanded Access Program; (xiv) competition from other companies and technologies within the Company's industry; and (xv) the hiring and employment commencement date of executive managers. More detailed information about the Company and the risk factors that may affect the realization of forward-looking statements is set forth in the Company's filings with the Securities and Exchange Commission (SEC), including the Company's Annual Report on Form 20-F filed with the SEC on April 8, 2024. All forward-looking statements included in this press release are made only as of the date of this press release. The Company assumes no obligation to update any written or oral forward-looking statement, whether as a result of new information, future events or otherwise unless required by law.

Company contact:
Adi Frish
Chief Corporate & Business Development Officer
RedHill Biopharma
+972-54-6543-112
adi@redhillbio.com 

Category: R&D


[1] https://www.ncbi.nlm.nih.gov/books/NBK589660/
[2]
Opaganib is an investigational new drug, not available for commercial distribution.
[3] https://www.ncbi.nlm.nih.gov/books/NBK589660/
[4]Talicia® (omeprazole magnesium, amoxicillin and rifabutin) is indicated for the treatment of H. pylori infection in adults. For full prescribing information see: www.Talicia.com.

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FAQ

What is RedHill Biopharma (RDHL) collaborating on with Duke University School of Medicine?

RedHill Biopharma is collaborating with Duke University School of Medicine to develop opaganib as a potential countermeasure against phosgene inhalation injury through multiple in vivo studies.

What is the potential application of opaganib for RDHL in relation to phosgene exposure?

If approved, opaganib could potentially be stockpiled for emergency use in the event of a major public safety incident involving phosgene exposure, as there is currently no known approved antidote or reversal agent.

How many sites in the U.S. has the EPA identified as potential phosgene exposure risks for RDHL's research?

The U.S. Environmental Protection Agency (EPA) has identified 123 sites in the United States that could potentially expose millions of people to phosgene due to plant malfunction or bioterrorism.

What regulatory pathway is RedHill Biopharma (RDHL) pursuing for opaganib in this collaboration?

RedHill Biopharma is aiming to advance opaganib into further definitive U.S. government-sponsored development under the FDA's Animal Rule pathway to approval.

Redhill Biopharma Ltd.

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