TSPAN5 (Tetraspanin 5): TSPAN5 is a gene that encodes a protein from the tetraspanin family, involved in cell signalling, adhesion, and migration. Tetraspanins assist in organising various cellular processes and play key roles in immune system function and cancer metastasis. TSPAN5 may also contribute to neural development and synaptic function, although its precise roles and effects on health and disease are still being studied.