Biodexa Completes Recruitment of Cohort A in Study of MTX110 in Patients with Recurrent Glioblastoma

Biodexa Pharmaceuticals PLC
(“Biodexa” or the “Company”)

Biodexa Completes Recruitment of Cohort A in Study of MTX110 in Patients with Recurrent Glioblastoma

Biodexa Pharmaceuticals PLC, (Nasdaq: BDRX), a clinical stage biopharmaceutical company developing a pipeline of products aimed at primary and metastatic cancers of the brain, is pleased to announce that it has completed recruitment into cohort A of its ongoing Phase 1 study of MTX110 (also known as MAGIC-G1 study)(NCT 05324501) in patients with recurrent glioblastoma (rGBM).

MAGIC-G1 is an open-label, 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. The study aims to recruit two cohorts (A and B), with a minimum of four patients in each; while patients in both cohorts receive MTX110 via intermittent repeated CED infusions, patients in the B cohort will be allowed CED catheter repositioning upon first in-study clinical and/or radiographic confirmed progression.

Following  review by the Data Safety Monitoring Board (DSMB),  the dose was escalated to 90µM after the first patient in cochort A and, because there have been no dose-limiting toxicities, recruitment into this cohort has concluded with the minimum of four patients. Patient 1 received 13 treatment cycles over 19 weeks of study treatment period, whereas patient 2 received 10 cycles over 13 weeks of study treatment period; patient 3 has, to date, received five cycles of treatment. The fourth patient underwent surgery yesterday and will receive their first cyle of treatment imminently.

Enrolment in cohort B will commence upon approval by the study DSMB, which is anticipated to be received towards the end of October 2023.

In addition, the Company is planning to add two more investigational centres into the study with activation expected in December 2023 and January 2024, respectively.

Commenting, Dr Dmitry Zamoryakhin, MD, MBA, CSO of Biodexa, said: “We are delighted to have concluded the recruitment of cohort A with the minimum number of patients based on the absence of drug-related adverse events. Cohort B of the study will provide a unique opportunity of continuous CED treatment after in-study tumour progression, which will be the first of its kind.”

About Glioblastoma (“GB”)

GB is the most common and devastating primary malignant brain tumour in adults encompassing 14.3% of all primary brain and central nervous system neoplasms⁽¹⁾. With an incidence of approximately 3.2 per 100,000 population in the USA, approximately 12,300 people in the USA will be diagnosed with GB per annum. Standard of care for treatment of GB is typically maximal surgical resection followed by radiotherapy plus concomitant and maintenance temozolomide chemotherapy with or without the Optune device. Notwithstanding, the multidisciplinary approach, almost all patients experience tumour progression with nearly universal mortality. The median survival from initial diagnosis is less than 21 months⁽²⁾.