TSPAN5 (Tetraspanin 5): TSPAN5 is a gene that encodes a protein belonging to the tetraspanin family, which is involved in cell signalling, adhesion, and migration. Tetraspanins help organise various cellular processes and play important roles in immune system function and cancer metastasis. TSPAN5 may also contribute to neural development and synaptic function, although its precise roles and impact on health and disease are still being investigated.