Claim: CLDN4 is a protein belonging to the group of claudins which also has a gene that can be deleted in Williams-Beuren syndrome.
Evidence: Claudin 4, also known as CLDN4, is a protein which in humans is encoded by the CLDN4 gene. It belongs to the group of claudins. This gene is deleted in Williams-Beuren syndrome, a neurodevelopmental disorder affecting multiple systems.