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Tiziana Life Sciences, Ltd. (Tiziana), a biotechnology company developing its lead candidate, intranasal foralumab, a fully human, anti-CD3 monoclonal antibody, announces quantitative PET imaging results from the third patient with multiple system atrophy (MSA) in the phase 2 clinical trial treated with intranasal foralumab to complete dosing.
Quantitative analysis of PET scans demonstrated reductions in inflammatory activity in clinically relevant brain regions known to be affected in MSA following treatment with intranasal foralumab. The third MSA patient to complete dosing has shown up to 34% reduction in standardized uptake value (SUV) and 26% reduction in standardized uptake value ratio (SUVR) in the most affected areas relevant to MSA (basal ganglia and cerebellar white matter) in the brain. These findings are similar to the first two MSA patients, who showed up to approximately 35% reduction in standardized uptake value (SUV) and 24% reduction in standardized uptake value ratio (SUVR).
“The consistency of these PET findings across MSA patients, based on our lab’s approaches, remains encouraging,” said Tarun Singhal, MBBS, M.D.,M.B.A., founding director, NeuroPET Programme, Ann Romney Center for Neurologic Diseases, Brigham and Women’s Hospital, Mass General Brigham and Associate Professor of Neurology at Harvard Medical School. “In this third patient to complete dosing, we again saw quantitative reductions similar to those previously seen in the first two patients and reinforce the PET imaging evidence supporting biological activity of intranasal foralumab in dampening neuroinflammation in this devastating disease. Correlation with clinical features and further confirmation with additional quantitative techniques should be performed.”
“Seeing reproducible reductions in neuroinflammation on PET imaging in a third MSA patient further strengthens our confidence in the potential of intranasal foralumab,” said Ivor Elrifi, chief executive officer of Tiziana Life Sciences. “These data build directly on the positive signals already observed in the first two MSA patients, as well as in non-active secondary progressive multiple sclerosis and moderate Alzheimer’s disease. We remain committed to advancing this program for patients who currently have no approved disease modifying options.”
PET imaging comparisons conducted before and after treatment demonstrated marked reductions in radiotracer uptake across disease-relevant brain regions. These findings suggest a reduction in neuroinflammatory activity following administration of intranasal foralumab.
Intranasal foralumab is a fully human anti-CD3 monoclonal antibody designed to modulate the immune system through mucosal tolerance mechanisms and reduce inflammation without the systemic toxicities associated with traditional anti-CD3 therapies.
MSA is a rare, progressive neurodegenerative disorder characterized by autonomic dysfunction, parkinsonism, and cerebellar ataxia. There are currently no approved disease-modifying treatments for the condition.
Tiziana plans to continue evaluating intranasal foralumab in additional patients to further validate these findings and better characterize the therapy’s potential to reduce neuroinflammation in MSA.
Foralumab, a fully human anti-CD3 monoclonal antibody, is a biologic candidate that has been shown to stimulate T regulatory cells when dosed intranasally. Currently, 14 patients with Non-Active Secondary Progressive Multiple Sclerosis (na-SPMS) have been dosed in an open-label intermediate sized Expanded Access (EA) Program (NCT06802328) with either an improvement or stability of disease seen within 6 months in all patients. In addition, intranasal foralumab is currently being studied in a phase 2a, randomized, double-blind, placebo-controlled, multicenter, dose-ranging trial in patients with non-active secondary progressive multiple sclerosis (NCT06292923).
Foralumab is the only fully human anti-CD3 monoclonal antibody (mAb) currently in clinical development. Immunomodulation by intranasal foralumab represents a novel avenue for the treatment of neuroinflammatory and neurodegenerative human diseases.
Tiziana is a clinical-stage biopharmaceutical company developing breakthrough therapies using transformational drug delivery technologies to enable alternative routes of immunotherapy.
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