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PharmaTher’s Sairiyo Therapeutics Inc. Advances Clinical Development of Patented Reformulated Cepharanthine for Phase 1 Study in Australia

PharmaTher Holdings Ltd.
PharmaTher Holdings Ltd.

TORONTO, Feb. 21, 2024 (GLOBE NEWSWIRE) -- PharmaTher Holdings Ltd. (the “Company” or “PharmaTher”) (OTCQB: PHRRF) (CSE: PHRM), a specialty pharmaceutical company, announced today Sairiyo Therapeutics Inc. (“Sairiyo”), a company that is forty-nine percent (49%) owned by PharmaTher and fifty-one percent (51%) owned by PharmaDrug Inc. (CSE: PHRX) (OTC Pink: LMLLF) (“PharmaDrug”), has initiated its regulatory and clinical development plan to evaluate Sairiyo’s patented reformulated enteric coated version of orally bioavailable cepharanthine (“PD-001”) as a potential treatment for oncology and infectious diseases in a Phase1 clinical study in Australia. PD-001 is protected by US Patent US10576077, with a patent expiration date of March 23, 2036.

In pursuit of its clinical strategy for PD-001, Sairiyo is establishing a wholly-owned subsidiary in Australia to conduct the proposed Phase 1 study and capitalize on drug development incentives in Australia. Sairiyo could earn a 43.5 percent rebate from the Australian Federal Government’s Research and Development tax incentive program.

As announced by PharmaDrug on February 14, 2024, the technical transfer and development activities for PD-001 are completed and successfully demonstrated the ability to manufacture clinical GMP manufacturing batches of PD-001 to support future filings to Australia's Therapeutic Goods Administration (“TGA”) and the Food and Drug Administration (“FDA”) in the United States. Manufacturing of product for clinical studies is scheduled for the second quarter of 2024. Sairiyo has commenced working on a regulatory application to the TGA for its proposed Phase 1 study in Australia.

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Fabio Chianelli, CEO and Chairman of PharmaTher, commented, “We are pleased that our investment in Sairiyo is being unlocked as it approaches its next phase of growth as a clinical-stage company exploring a patented reformulated orally bioavailable version of cepharanthine that has the potential to treat responsive cancers and infectious diseases. We expect to submit the regulatory package to the TGA for a proposed Phase 1 clinical study in Australia in Q2-2024.”

About Sairiyo Therapeutics Inc.

Sairiyo Therapeutics Inc., which is owned by PharmDrug Inc. (51%) and PharmaTher (49%), is focused on advancing the clinical development of an improved and patented enteric-coated orally bioavailable formulation of cepharanthine (PD-001) to treat responsive cancers and infectious disease, including COVID-19.

Cepharanthine is a natural product and an approved drug used for more than 70 years in Japan to successfully treat a variety of acute and chronic diseases. In clinical research, cepharanthine has been shown to exhibit multiple pharmacological properties including anti-oxidative, anti-inflammatory, immuno-regulatory, anti-cancer, anti-viral and anti-parasitic effects. However, historically cepharanthine's low oral bioavailability has represented a major obstacle to realizing its full clinical potential.

Compared to generic cepharanthine, PD-001 has been shown in rodent and non-rodent models to possess markedly improved oral bioavailability (more easily absorbed). These findings support the development of an orally administered formulation, and in so doing, removes the undesirable requirement for frequent intravenous dosing to maintain therapeutic levels of drug in circulation. Sairiyo endeavours to develop an efficacious oral therapeutic to potentially improve outcomes for infectious disease and oncology applications.

About PharmaTher Holdings Ltd.

PharmaTher Holdings Ltd. (OTCQB: PHRRF) (CSE: PHRM) is focused on the development and commercialization of KETARX™ (Ketamine) to fill the global unmet medical needs for anesthesia, sedation, pain, mental health, and neurological indications. PharmaTher owns 49% of Sairiyo Therapeutics Inc., which focuses on advancing the clinical development of an improved and patented enteric-coated orally bioavailable formulation of cepharanthine (PD-001) to treat responsive cancers and infectious diseases, including COVID-19. Learn more at PharmaTher.com.

For more information about PharmaTher, please contact:

Fabio Chianelli
Chief Executive Officer
PharmaTher Holdings Ltd.
Tel: 1-888-846-3171
Email: info@pharmather.com
Website: www.pharmather.com

Neither the Canadian Securities Exchange nor its Regulation Services Provider have reviewed or accept responsibility for the adequacy or accuracy of this release.

Cautionary Statement

This press release contains 'forward-looking information' within the meaning of applicable Canadian securities legislation. These statements relate to future events or future performance. The use of any of the words "could", "would", "intend", "expect", "believe", "will", "projected", "estimated", "potential", "aim", “may”, “plan”, “proposed”, “lead”, “toward”, “anticipate”, and similar expressions and statements relating to matters that are not historical facts are intended to identify forward-looking information and are based on PharmaTher Holdings Ltd. (the "Company") current belief or assumptions as to the outcome and timing of such future events. Forward-looking information is based on reasonable assumptions that have been made by the Company at the date of the information and is subject to known and unknown risks, uncertainties, and other factors that may cause actual results or events to differ materially from those anticipated in the forward-looking information. Given these risks, uncertainties and assumptions, you should not unduly rely on these forward-looking statements. The forward-looking information contained in this press release is made as of the date hereof, and Company is not obligated to update or revise any forward-looking information, whether as a result of new information, future events or otherwise, except as required by applicable securities laws. The foregoing statements expressly qualify any forward-looking information contained herein. Factors that could cause actual results to differ materially from those anticipated in these forward-looking statements are described under the caption "Risk Factors" in Company's management's discussion and analysis for the three and six months ended November 30, 2023 ("MD&A"), dated January 26, 2024, which is available on the Company's profile at www.sedarplus.ca.

This news release does not constitute an offer to sell or the solicitation of an offer to buy, and shall not constitute an offer, solicitation or sale in any state, province, territory or jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state, province, territory or jurisdiction.