PCDH8 (Protocadherin 8): PCDH8 is a gene that encodes a protein from the protocadherin family, which are cell adhesion molecules essential for forming and maintaining neural networks. It plays a key role in synaptic plasticity, vital for learning and memory. Dysregulation of PCDH8 has been associated with neurodevelopmental disorders and is also under investigation for its potential role in tumour suppression due to its function in cell-to-cell communication and nervous system signalling.