Tiziana to Advance TZLS-501 - Its Fully Human IL-6R Monoclonal Antibody

BOSTON, Sept. 25, 2025 (GLOBE NEWSWIRE) -- Tiziana Life Sciences, Ltd. (Nasdaq: TLSA) (“Tiziana” or the “Company”), today announces it will advance its second asset, a fully human anti-IL-6 receptor (“IL-6R”) monoclonal antibody, TZLS-501. There has been heightened industry activity in the IL-6 pathway space, underscored by Novartis’ recent acquisition of Tourmaline Bio for approximately $1.4 billion. Tiziana will pursue non-dilutive funding strategies for the development of TZLS-501 while continuing to advance intranasal foralumab as its lead program.

TZLS-501 is a fully human anti-IL-6 receptor (“IL-6R”) monoclonal antibody (mAb) targeting both the membrane-bound and soluble forms of IL-6R. This dual mechanism of action not only blocks IL-6R signaling but also reduces circulating IL-6 cytokines, which are recognized drivers of inflammation, lung damage, and chronic fibrosis. Tiziana sees potential to develop TZLS-501 as a monotherapy, or in combination with its lead candidate, foralumab, as well as with other anti-inflammatory and anti-infective agents.

The recent acquisition by Novartis further validates the importance of IL-6 therapeutics. Tiziana believes this an opportune time for the parallel advancement of TZLS-501. Accordingly, Tiziana will pursue development of TZLS-501, while not diverting resources or focus from ongoing clinical trials with foralumab.

Excessive IL-6 signaling plays a central role in multiple diseases, including rheumatoid arthritis (RA), acute respiratory distress syndrome (ARDS), idiopathic pulmonary fibrosis (IPF), systemic lupus erythematosus, and various cancers. By reducing both receptor-mediated signaling and circulating cytokine burden, TZLS-501 may offer therapeutic advantages in managing these acute and chronic inflammatory conditions.

Ivor Elrifi, Chief Executive Officer of Tiziana Life Sciences, commented, “Novartis’ recent acquisition of Tourmaline demonstrates how IL-6 therapy is increasingly valued in treating systemic inflammation and related diseases. While intranasal foralumab remains our lead program and primary focus, we are reviewing development opportunities for TZLS-501 as a complementary asset. Our fully human IL-6 mAb has always been an exciting asset. With recent market developments, we feel it is an opportune time to explore TZLS-501’s development. Its unique ability to address both membrane-bound and soluble IL-6 signaling, positions it as a potentially powerful therapy for acute and chronic inflammatory conditions.”