Schidlowski et al.(2020) performed whole exome sequencing on eight children with a clinicaldiagnosis of OCA in Paraná state. In five, they identified pathogenic variants inthe gene TYR (OCA1), three compound heterozygous with one novelvariant. One individual with a variant in the gene SLC45A2 (OCA4)is also a compound heterozygous. The gene discussed is TYR; the disease is oculocutaneous albinism.