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Cocrystal Pharma's First Oral Norovirus Protease Inhibitor CDI-988 to be Featured at the International Society for Antiviral Research Conference (ICAR) 2026 CDI-988 is the first oral antiviral drug candidate being develo

Key Takeaway: Cocrystal Pharma's CDI-988, the first oral norovirus protease inhibitor, is set to be presented at the 39th International Conference on Antiviral Research. This potentially groundbreaking antiviral drug, developed for the treatment and prevention of acute gastroenteritis caused by norovirus, will showcase Phase 1 data along with updates from its ongoing Phase 1b study. The absence of approved therapies for norovirus highlights the urgent market need this drug aims to meet, making it a significant step in antiviral research.

Market Sentiment Analysis

POSITIVE FACTORS

  • CDI-988 is the first oral antiviral drug candidate for norovirus, addressing an unmet medical need.
  • The drug shows promise for both treatment and prevention of norovirus infections.
  • Cocrystal Pharma is advancing its clinical studies and presenting meaningful data at a prestigious conference.

CONCERNS & RISKS

  • There are no approved antiviral therapies or vaccines for norovirus infections, indicating a high-risk development environment.
  • The reliance on successful recruitment of volunteers for ongoing clinical studies presents a potential challenge.

Full Press Release Details

Pharma's First Oral Norovirus Protease Inhibitor CDI-988 to be Featured at the International Society for Antiviral Research Conference
CDI-988 is the first oral antiviral drug candidate being developed for prevention and treatment of norovirus infections
Company to present Phase 1 data and updates from ongoing Phase 1b study conducted at Emory University School of Medicine
No approved antiviral therapies or vaccines for norovirus infections demonstrate an immediate market need
Wash. (February 19, 2026) - Cocrystal Pharma, Inc. (Nasdaq: COCP) ("Cocrystal" or the "Company")
announces that initial progress of a norovirus challenge study with its direct-acting, oral protease inhibitor CDI-988 will be presented
at the 39th International Conference on Antiviral Research (ICAR2026), being held April 27-May 1 in
Prague, Czech Republic. CDI-988 is the first oral antiviral drug candidate under development for the prevention and treatment of acute
norovirus gastroenteritis.
Cocrystal President and co-CEO, will discuss the ongoing Phase 1b challenge study evaluating CDI-988 as both a potential prophylactic
and therapeutic option for norovirus infection. CDI-988 was designed and developed using the Company's proprietary structure-based
drug discovery platform technology as a pan-viral protease inhibitor, targeting 3CL viral proteases. Based on its novel mechanism of
action and superior broad-spectrum antiviral activity, CDI-988 represents a potential oral treatment for both noroviruses and coronaviruses.
is widely regarded as the premier international conference for antiviral research, and it is a privilege to be selected to present our
work to this antiviral research community," said Dr. Lee. "We are excited to further advance CDI-988 into a Phase 1b norovirus
challenge study at Emory University School of Medicine. CDI-988 is our first pan-viral protease inhibitor developed for the treatment
of acute norovirus gastroenteritis and also represents a significant step toward a potential treatment for patients suffering from chronic
norovirus infection."
International Society for Antiviral Research (ISAR) is an internationally recognized organization of scientists working across the basic,
applied, translational and clinical aspects of antiviral research. The annual International Conference on Antiviral Research (ICAR),
the Society's main event, brings together virologists, chemists, clinicians, pharmacologists, biologists and regulatory representatives
focused on antiviral agents and therapies. Topics include novel and broad-spectrum antivirals, host-targeted approaches, vaccines, pandemic
preparedness and emerging or re-emerging viral threats, with a strong emphasis on interdisciplinary collaboration among academia, industry,
government and non-profit organizations.
is a common and highly contagious virus that afflicts people of all ages and causes symptoms of acute gastroenteritis including nausea,
vomiting, stomach pain and diarrhea, as well as fatigue, fever and dehydration. This infection spreads rapidly in semi-closed and crowded
settings such as hospitals, nursing homes, cruise ships, schools, disaster-relief shelters and military facilities, where close contact
makes outbreaks especially difficult to control. Norovirus causes an estimated 200,000 deaths worldwide each year at a societal
cost of approximately $60 billion. In the U.S., norovirus is responsible for about 21 million cases of acute gastroenteritis annually,
including 109,000 hospitalizations, 465,000 emergency department visits and nearly 900 deaths, with an estimated annual economic burden
Cocrystal Pharma, Inc.
Pharma, Inc. is a clinical-stage biotechnology company discovering and developing novel antiviral therapeutics that target the replication
process of influenza viruses, coronaviruses (including SARS-CoV-2), noroviruses and hepatitis C viruses. Cocrystal employs unique structure-based
technologies to create viable antiviral drugs. For further information about Cocrystal, please visit www.cocrystalpharma.com.
Note Regarding Forward-Looking Statements
press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including
statements regarding the potential of CDI-988 as an oral treatment for both norovirus and coronavirus infections. The words "believe,"
"may," "estimate," "continue," "anticipate," "intend," "should,"
"plan," "could," "target," "potential," "is likely," "will,"
"expect" and similar expressions, as they relate to us, are intended to identify forward-looking statements. We have based
these forward-looking statements largely on our current expectations and projections about future events. Some or all of the events anticipated
by these forward-looking statements may not occur. Important factors that could cause actual results to differ from those in the forward-looking
statements include, but are not limited to, the risks and uncertainties arising from inflation, affordability, the possibility of a recession,
the impact of future interest rate changes on the economy, tariffs and the resulting litigation, and geopolitical conflicts including
those in Ukraine, Latin America and Middle East on our Company, our collaboration partners, and on the U.S. and global economies, including
manufacturing and research delays arising from raw materials and labor shortages, supply chain disruptions and other business interruptions
including any adverse impacts on our ability to obtain raw materials for and otherwise proceed with the planned norovirus study or subsequent
studies as well as similar problems with our vendors and our current and any future clinical research organizations (CROs) and contract
manufacturing organizations (CMOs), the progress and results of the studies including any adverse findings or delays, the ability of
us and our CROs to recruit volunteers for, and to otherwise proceed with, clinical studies, our and our collaboration partners'
technology and software performing as expected, financial difficulties experienced by certain partners, the results of any current and
future preclinical and clinical studies, general risks arising from clinical studies, receipt of regulatory approvals, regulatory changes
and any adverse developments which may arise therefrom, potential mutations in a virus we are targeting that may result in variants that
are resistant to a product candidate we develop, the potential for the development of effective treatments by competitors which could
reduce or eliminate a prospective future market share commercializing any product candidates we may develop in the future, and our ability
to meet our future liquidity needs. Further information on our risk factors is contained in our filings with the SEC, including the "Risk
Factors" in Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2024 and the Prospectus dated September 25,
2025. Any forward-looking statement made by us herein speaks only as of the date on which it is made. Factors or events that could cause
our actual results to differ may emerge from time to time, and it is not possible for us to predict all of them. We undertake no obligation
to publicly update any forward-looking statement, whether as a result of new information, future developments or otherwise, except as
may be required by law.

Frequently Asked Questions

What is CDI-988?

CDI-988 is the first oral antiviral candidate for treating norovirus infections.

When will the Phase 1 study data for CDI-988 be presented?

Phase 1 data on CDI-988 will be presented at the ICAR 2026 conference in April.

What is the main goal of CDI-988?

CDI-988 aims to serve as both a prophylactic and therapeutic for norovirus.

How does norovirus affect people?

Norovirus causes acute gastroenteritis, including symptoms like vomiting and diarrhea.

What is the annual impact of norovirus in the U.S.?

Norovirus leads to about 21 million cases of gastroenteritis and nearly 900 deaths yearly.

Last updated: Feb 19, 2026