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Opaganib

Phase 2

COVID-19 | Small molecule | Infectious Disease |Redhill Biopharma Ltd.|Last Updated: Jul 31, 2025

Success Probability

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials1
Total Enrollment475

FDA Designations

ORPHAN_DRUGRARE_PEDIATRIC_DISEASE

Clinical trial landscape

Opaganib · 2 trials · 3 indications

Phase 2 2
NCT04467840Opaganib, a Sphingosine Kinase-2 (SK2) Inhibitor in COVID-19 PneumoniaCOVID-19
COMPLETED475 Analytics
NCT04414618A Study of Opaganib in Coronavirus Disease 2019 PneumoniaCoronavirus Infections
COMPLETED42 Analytics
PHASE2COMPLETED
Opaganib, a Sphingosine Kinase-2 (SK2) Inhibitor in COVID-19 Pneumonia
COVID-19Unlock trial analytics
PHASE2COMPLETED
A Study of Opaganib in Coronavirus Disease 2019 Pneumonia
Coronavirus InfectionsUnlock trial analytics

Study Endpoints

Primary Endpoints

Supplemental Oxygen Requirement
14 days maintained up to 42 days

To compare the proportion of patients no longer requiring supplemental oxygen for at least 24 hours by Day 14 between subjects taking opaganib and those on placebo.

Measurement of the Change in Oxygen Requirement From Baseline
14 days

Maximal oxygen flow (L/min) was recorded daily for the 14 days of treatment for each participant. Participant individual area under the curve (AUC) was calculated based on the trapezoidal rule, after subtracting the baseline oxygen requirement at each day. The median AUC absolute change from baseline (L/min) for each treatment arm is presented.

Secondary Endpoints

Percentage of Subjects With ≥ 2 Category Improvement on the World Health Organization (WHO) Ordinal Scale for Clinical Improvement by Day 14 Maintained to Day 42
14 days maintained up to 42 days
Number of Subjects With Improvement to a Score of 3 or Less on the WHO Ordinal Scale for Clinical Improvement With a Scale Ranging From 8 Down to 0
14 days maintained up to 42 days
Number of Participants With Low Oxygen Flow Via Nasal Cannula
14 days maintained up to 42 days
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
OpaganibEXPERIMENTALIn addition to standard of care, opaganib will be administered orally with 2 x 250 mg capsules (500 mg) every 12 hours. When required this may be made into a suspension form and may be administered by nasogastric tube.
PlaceboPLACEBO_COMPARATORIn addition to standard of care, a matching placebo will be administered orally with 2 x 250 mg capsules (500 mg) every 12 hours. Where required this may be made into a suspension form and may be administered by nasogastric tube.

Interventions

NameTypeDescription
OpaganibDRUGStudy participants will receive either opaganib 2 x 250 mg capsules (500 mg) every 12 hours, or matching placebo, in addition to standard of care (pharmacological as defined above and/or supportive) at any given institution. Study drug will be administered every day for 14 days (Day 1 to Day 14).
PlaceboDRUGStudy participants will receive either opaganib 2 x 250 mg capsules (500 mg) every 12 hours, or matching placebo, in addition to standard of care (pharmacological as defined above and/or supportive) at any given institution. Study drug will be administered every day for 14 days (Day 1 to Day 14).
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Eligibility Criteria

Age Range18 Years to 80 Years
SexALL
Healthy VolunteersNo
Study Sites57

Inclusion Criteria: 1. Adult male or female ≥18 to ≤80 years of age 2. Proven COVID-19 infection per RT-PCR assay of a pharyngeal sample (nasopharyngeal or oropharyngeal) AND pneumonia defined as radiographic opacities on chest X-ray or CT scan. that diagnosed COVID-19 pneumonia. Pharyngeal samples...

Countries:United StatesBrazilColombiaIsraelItalyMexicoPeruPolandRussiaUnited Kingdom
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Frequently asked questions about Opaganib

What is Opaganib used for?

Opaganib is an investigational small molecule being studied for the treatment of coronavirus infections, including COVID-19 pneumonia. It has been evaluated in clinical trials for patients with COVID-19 and related lung infections. The drug is not approved and remains in clinical development.

What does Opaganib target?

Opaganib is a sphingosine kinase-2 (SK2) inhibitor. It works by inhibiting the SK2 enzyme, which is involved in cellular signaling pathways. This mechanism is being studied for its potential effects in treating COVID-19 pneumonia and other coronavirus infections.

Who makes Opaganib?

Opaganib is being developed by Redhill Biopharma Ltd., a biopharmaceutical company. The company's stock is traded under the ticker symbol RDHL. Redhill Biopharma is conducting clinical trials to evaluate the safety and efficacy of Opaganib for COVID-19 and related conditions.

What phase is Opaganib in?

Opaganib is in Phase 2 clinical development. It has completed two Phase 2 trials for COVID-19 pneumonia and coronavirus infections. The drug is investigational and has not received FDA approval. It has been granted orphan drug and rare pediatric disease designations by the FDA.

What clinical trials is Opaganib in?

Opaganib has been studied in two completed Phase 2 clinical trials. The first trial, NCT04414618, enrolled 42 participants with coronavirus infections in the United States and Israel. The second trial, NCT04467840, enrolled 475 participants with COVID-19 pneumonia across multiple countries including the United States, Brazil, and Italy.

Is Opaganib the same as any other drug?

Opaganib is also known by its chemical name and is not commonly referred to by alternative brand names. It is a sphingosine kinase-2 inhibitor being developed by Redhill Biopharma. No other alternative names have been established for this investigational drug in clinical development.