RE: News out25 Feb 2026 12:14
Tiziana Life Sciences Ltd.
BOSTON, Feb. 25, 2026 (GLOBE NEWSWIRE) -- Tiziana Life Sciences, Ltd. (Nasdaq: TLSA) (“Tiziana”), a biotechnology company developing its lead candidate, intranasal foralumab, a fully human, anti-CD3 monoclonal antibody, announces positive new biomarker data from a late-breaking poster titled “Nasal foralumab downregulates CSF inflammation and upregulates CSF neuroprotective proteomic pathways which correlate with [F-18]PBR06-PET imaging in na-SPMS with PIRA,” which was presented by investigators from Brigham and Women’s Hospital, Boston, MA.
In multiple sclerosis (MS), an autoimmune disease involving inflammation, demyelination, and neurodegeneration in the CNS, Cerebrospinal fluid (CSF) plays a crucial role in diagnosis, understanding disease mechanisms, and monitoring progression, especially in progressive forms like non-active secondary progressive MS (na-SPMS) with progression independent of relapse activity (PIRA). CSF analysis, typically obtained via lumbar puncture, provides direct insight into CNS-specific processes because it reflects the local environment around the brain and spinal cord, unlike blood which can be influenced by systemic factors.
The late-breaking poster reports results from 10 patients with non-active secondary progressive multiple sclerosis (na-SPMS) and progression independent of relapse activity (PIRA) treated with nasal foralumab in an open-label expanded-access program. Patients underwent 14 paired evaluations of [F-18]PBR06-PET scans (measuring microglial activation via m-GALP z-scores) and untargeted data-independent acquisition CSF proteomics at baseline and during up to 6 months of treatment.
Key findings include:
Nasal foralumab treatment significantly reduced voxel-wise average [F-18]PBR06-PET m-GALP z-scores in white matter and global brain regions (p<0.05 at 3 months and later follow-up), confirming decreased microglial activation.
CSF proteomics showed downregulation of inflammatory biomarkers (e.g., IFNAR1 in the interferon pathway and LY86 in the NF-κB pathway) and upregulation of neuroprotective proteins (e.g., MEG10).
Strong positive correlations were observed between PET m-GALP z-scores and inflammatory CSF proteins (e.g., IFNAR1 in high-affinity TSPO binders across whole brain, cortex, and cerebellum; r values up to 0.896, p<0.05). Negative correlations were seen with neuroprotective proteins (e.g., MEG10 and COBA1 in fibrosis-related pathways; r values up to -0.931, p<0.05).
These biomarker changes occurred alongside clinical stabilization or improvement, with no serious treatment-related adverse events.
“This late-breaking poster provides the first direct link between reduced microglial PET signal and favorable CSF proteomic shifts during nasal foralumab treatment in na-SPMS with PIRA,” said Tarun Singhal, M.D., lead author and neurologist at Brigham and Women’s Hospital. “The correlations demonstrate that [F-18]PBR06-PET is biol
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