Below is an instruction from Human. Write a response.
    ### Instruction:
    What causes Ehlers-Danlos syndrome, vascular type ?
    ### Response:
    What causes Ehlers-Danlos syndrome, vascular type? Ehlers-Danlos syndrome (EDS), vascular type is caused by changes (mutations) in the COL3A1 gene. The COL3A1 gene provides instructions for making a component of type III collagen. Collagen is a protein that provides structure and strength to connective tissues throughout the body.
    