Biodexa Reports 12 Month Survival in MAGIC-G1 Study of MTX110 in Recurrent Glioblastoma Patients

Biodexa Pharmaceuticals PLC

Biodexa Reports 12 Month Survival in MAGIC-G1 Study
of MTX110 in Recurrent Glioblastoma Patients

CARDIFF, United Kingdom, February 8, 2024 (GLOBE NEWSWIRE) -- 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 including Type 1 diabetes and rare/orphan brain cancers, today provided survival updates from its MAGIC-G1 study (NCT05324501) of MTX110 in patients with recurrent glioblastoma (“rGBM”) being conducted at Duke Cancer Institute and Baptist MD Anderson Cancer Center.

In October 2023, Biodexa announced completion of recruitment of Cohort A of an ongoing open-label Phase I dose-escalation study designed to assess the feasibility and safety of intermittent infusions of MTX110 administered by convection enhanced delivery (“CED”) via implanted refillable pump and catheter. Because no drug-related adverse events were observed within the first 30 days from start of treatment, the minimum number of four patients were recruited into Cohort A.

Patient #1 received weekly infusions of 60µM of MTX110 and survived for 12 months from the start of treatment (OS=12).

Patients #2, 3 and 4 each received weekly infusions of 90µM of MTX110, the expected optimum dose, and remain in the study.

GBM universally recurs and once it does median overall survival according to a retrospective analysis of 299 patients reported in the Journal of Neuro-Oncology is 6.5 months¹. Currently, no standard of care is established for rGBM. 

About Glioblastoma Multiforme (GBM)

GBM is the most common and devastating primary malignant brain tumour in adults with incidence of 3 -4 per 100,000 population². Standard of care for treatment of GBM is typically maximal surgical resection followed by radiotherapy plus concomitant and maintenance temozolomide chemotherapy. Notwithstanding, the multidisciplinary approach, almost all patients experience tumour progression with nearly universal mortality.

About MTX110

MTX110 is a water-soluble form of panobinostat free base, achieved through complexation with hydroxypropyl-β-cyclodextrin (HPBCD), that enables convection-enhanced delivery (CED) at potentially chemotherapeutic doses directly to the site of the tumour. Panobinostat is a hydroxamic acid and acts as a non-selective histone deacetylase inhibitor (pan-HDAC inhibitor). The currently available oral formulation of panobinostat lactate (Farydak®) is not suitable for treatment of brain cancers owing to poor blood-brain barrier penetration and inadequate brain drug concentrations. Based on favourable translational science data, MTX110 is being evaluated clinically as a treatment for recurrent Glioblastoma (NCT05324501), Diffuse Midline Glioma (“DMG”) (NCT04264143) and recurrent medulloblastoma (NCT04315064), and preclinically for treatment of Leptomeningeal Disease. MTX110 is delivered directly into and around the patient's tumour via a catheter system (e.g. CED or fourth ventricle infusions) to bypass the blood-brain barrier. This technique exposes the tumour to very high drug concentrations while simultaneously minimising systemic drug levels and the potential for toxicity and other side effects. Panobinostat has demonstrated high potency against DIPG tumour cells in in vitro and in vivo models, and in a key study it was the most promising of 83 anticancer agents tested in 14 patient-derived DMG cell lines (Grasso et al, 2015. Nature Medicine 21(6), 555-559). 

1. J Neurooncol. 2017; 135(1): 183–192
2. Cancers | Free Full-Text | Epidemiology of Glioblastoma Multiforme; Literature Review (mdpi.com) 

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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 programmes include tolimidone, under development as a novel agent for the treatment of type 1 diabetes and MTX110, which is being studied in aggressive rare/orphan brain cancer indications, and

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 glycemic 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 solubilised  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 tumour, 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 www.biodexapharma.com.

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.” Examples of forward-looking statements include, among others, statements we make regarding our pre-clinical data and clinical trials. 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 the Company shall file from time to time or announcements that may be made by the Company in accordance with the rules and regulations promulgated by the United States Securities and Exchange Commission, 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 the Company are expressly qualified in their entirety by the cautionary statements above.  Except as may be required under relevant laws in the United States, the Company does not undertake any obligation to publicly update or revise any forward-looking statements because of new information, future events or events otherwise arising.