Biodexa Announces Recruitment of First Patient in Phase 2 Study of Tolimidone in Type 1 Diabetes

June 4, 2025

Biodexa Announces Recruitment of First Patient

in Phase 2 Study of Tolimidone in Type 1 Diabetes

Biodexa Pharmaceuticals PLC (“Biodexa” or the “Company”) (Nasdaq: BDRX), a clinical stage biopharmaceutical company developing a pipeline of innovative products for the treatment of diseases with unmet medical needs, today announced the recruitment of the first patient in a Phase 2 study of tolimidone in Type 1 Diabetes (“T1D”).

The study is an Investigator Initiated Trial (IIT) conducted by the University of Alberta Diabetes Institute. The study will measure C-peptide levels (a marker for insulin) and HbA1c (a marker for blood glucose) after three months compared with baseline and the number of hyperglycemic events initially in 12 patients across three dose groups. The study may be expanded in due course.

  

Tolimidone in T1D

Tolimidone’s potential utility in T1D has been demonstrated by a number of preclinical studies conducted at the University of Alberta, where Lyn kinase was identified as a key factor for beta cell survival and proliferation in in vitro and in vivo models. Most importantly, tolimidone was able to induce proliferation in beta cells isolated from human cadavers.

About Tolimidone

Tolimidone was originally discovered by Pfizer Inc. (“Pfizer”) and was developed through Phase II for the treatment of gastric ulcers. Pfizer undertook a broad pre-clinical program to characterize the pharmacology, pharmacokinetics, metabolism and toxicology of tolimidone. Pfizer discontinued development of the drug due to lack of efficacy for that indication in a Phase 2 clinical trial. Tolimidone is a selective activator of the enzyme Lyn kinase which increases phosphorylation of insulin substrate -1, thereby amplifying the signalling cascade initiated by the binding of insulin to its receptor.

About Biodexa Pharmaceuticals PLC

Biodexa Pharmaceuticals PLC (listed on NASDAQ: BDRX) is a clinical stage biopharmaceutical company developing a pipeline of innovative products for the treatment of diseases with unmet medical needs. The Company’s lead development programs include eRapa, under development for Familial Adenomatous Polyposis and Non-Muscle Invasive Bladder Cancer; tolimidone, under development for the treatment of type 1 diabetes; and MTX110, which is being studied in aggressive rare/orphan brain cancer indications.

eRapa is a proprietary oral tablet formulation of rapamycin, also known as sirolimus. Rapamycin is an mTOR (mammalian Target Of Rapamycin) inhibitor. mTOR has been shown to have a significant role in the signalling pathway that regulates cellular metabolism, growth and proliferation and is activated during tumorigenesis.

Tolimidone is an orally delivered, potent and selective inhibitor of Lyn kinase. Lyn is a member of the Src family of protein tyrosine kinases, which is mainly expressed in hematopoietic cells, in neural tissues, liver, and adipose tissue. Tolimidone demonstrates glycaemic control via insulin sensitization in animal models of diabetes and has the potential to become a first in class blood glucose modulating agent.

MTX110 is a solubilized formulation of the histone deacetylase (HDAC) inhibitor, panobinostat. This proprietary formulation enables delivery of the product via convection-enhanced delivery (CED) at chemotherapeutic doses directly to the site of the tumor, by-passing the blood-brain barrier and potentially avoiding systemic toxicity.

Biodexa is supported by three proprietary drug delivery technologies focused on improving the bio-delivery and bio-distribution of medicines. Biodexa’s headquarters and R&D facility is in Cardiff, UK. For more information visit .

Forward-Looking Statements

Certain statements in this announcement may constitute “forward-looking statements” within the meaning of legislation in the United Kingdom and/or United States. Such statements are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995 and are based on management’s belief or interpretation. All statements contained in this announcement that do not relate to matters of historical fact should be considered forward-looking statements. In certain cases, forward-looking statements can be identified by the use of words such as “plans”, “expects” or “does not anticipate”, or “believes”, or variations of such words and phrases or statements that certain actions, events or results “may”, “could”, “would”, “might” or “will be taken”, “occur” or “be achieved.” Forward-looking statements and information are subject to various known and unknown risks and uncertainties, many of which are beyond the ability of the Company to control or predict, that may cause their actual results, performance or achievements to be materially different from those expressed or implied thereby, and are developed based on assumptions about such risks, uncertainties and other factors set out herein.

Reference should be made to those documents that Biodexa shall file from time to time or announcements that may be made by Biodexa in accordance with the rules and regulations promulgated by the SEC, which contain and identify other important factors that could cause actual results to differ materially from those contained in any projections or forward-looking statements. These forward-looking statements speak only as of the date of this announcement. All subsequent written and oral forward-looking statements by or concerning Biodexa are expressly qualified in their entirety by the cautionary statements above. Except as may be required under relevant laws in the United States, Biodexa does not undertake any obligation to publicly update or revise any forward-looking statements because of new information, future events or events otherwise arising.