Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the genetic changes related to oculocutaneous albinism ?
    ### Response:
    Oculocutaneous albinism can result from mutations in several genes, including TYR, OCA2, TYRP1, and SLC45A2. Changes in the TYR gene cause type 1; mutations in the OCA2 gene are responsible for type 2; TYRP1 mutations cause type 3; and changes in the SLC45A2 gene result in type 4.
    