RedHill Biopharma Completes Enrollment of Oral Opaganib Phase 2/3 COVID-19 Study
The primary endpoint of the study is the proportion of patients breathing room air without oxygen support by Day 14. The study captures additional important outcome measures in the follow up period of up to 6 weeks, such as the time to hospital discharge, improvement according to the World Health Organization Ordinal Scale for Clinical Improvement and incidence of intubation and mortality.
An evaluation of the blinded blended intubation and mortality rates to date is encouraging as compared to reported rates of mortality from large platform studies such as RECOVERY, and other studies in similar patient populations. Furthermore, four independent DSMB recommendations to continue the study were already provided following unblinded safety and futility reviews.
"Enrollment completion of this 475-patient global study of oral opaganib for COVID-19 is a truly exciting milestone in the urgent search for an effective pill to treat COVID-19, positioning opaganib as a leading novel, dual-action, investigational COVID-19 oral treatment," said
In addition to ongoing discussions with the FDA and other regulators, the Company has also met with the EMA to talk about a European pathway. As with all discussions with regulatory bodies, next steps will be guided by study results. Discussions are also ongoing with potential partners
About Opaganib (Yeliva®, ABC294640)
Opaganib, a new chemical entity, is a proprietary, first-in-class, orally-administered, sphingosine kinase-2 (SK2) selective inhibitor, with dual anti-inflammatory and antiviral activity, that is host-targeted and is therefore expected to be effective against emerging viral variants. Opaganib has also shown anticancer activity and has the potential to target multiple oncology, viral, inflammatory, and gastrointestinal indications.
Opaganib is being evaluated as a treatment for COVID-19 pneumonia in a global Phase 2/3 study and has demonstrated positive safety and efficacy signals in preliminary top-line data from a 40-patient
Opaganib has also received Orphan Drug designation from the
Opaganib demonstrated potent antiviral activity against SARS-CoV-2, the virus that causes COVID-19, completely inhibiting viral replication in an in vitro model of human lung bronchial tissue. Additionally, preclinical in vivo studies have demonstrated opaganib's potential to ameliorate inflammatory lung disorders, such as pneumonia, and has shown decreased fatality rates from influenza virus infection and ameliorated Pseudomonas aeruginosa-induced lung injury by reducing the levels of IL-6 and TNF-alpha in bronchoalveolar lavage fluids.
The ongoing studies with opaganib are registered on www.ClinicalTrials.gov, a web-based service by the
About RedHill Biopharma
This press release contains "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. Such statements may be preceded by the words "intends," "may," "will," "plans," "expects," "anticipates," "projects," "predicts," "estimates," "aims," "believes," "hopes," "potential" or similar words. 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 the delay in last patient visit and top-line data from the Phase 2/3 COVID-19 study for opaganib, that the Phase 2/3 COVID-19 study for opaganib may not be successful and, even if successful, such study and results may not be sufficient for regulatory applications, including emergency use or marketing applications, and that additional COVID-19 studies for opaganib are likely to be required by regulatory authorities to support such potential applications and the use or marketing of opaganib for COVID-19 patients, that opaganib will not be effective against emerging viral variants, as well as risks and uncertainties associated with (i) the initiation, timing, progress and results of the Company's research, manufacturing, preclinical 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 preclinical studies or clinical trials (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 Movantik®, 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
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 Opaganib is an investigational new drug, not available for commercial distribution.
 Based on preliminary blinded blended data from 463 patients. The Company did not conduct a head-to-head comparison study in the same patient population. The theoretical comparison between the global Phase 2/3 study with opaganib and reported rates of mortality from large platform studies such as RECOVERY, and other studies in similar patient populations, serves as a general benchmark and should not be construed as a direct and/or applicable comparison as if the Company conducted a head-to-hear comparison study.
 Xia C. et al. Transient inhibition of sphingosine kinases confers protection to influenza A virus infected mice. Antiviral Res. 2018 Oct; 158:171-177. Ebenezer DL et al. Pseudomonas aeruginosa stimulates nuclear sphingosine-1-phosphate generation and epigenetic regulation of lung inflammatory injury. Thorax. 2019 Jun;74(6):579-591.
 Full prescribing information for Movantik® (naloxegol) is available at: www.Movantik.com.
 Full prescribing information for Talicia® (omeprazole magnesium, amoxicillin and rifabutin) is available at: www.Talicia.com.
 Full prescribing information for Aemcolo® (rifamycin) is available at: www.Aemcolo.com.