In the present study, we analyzed 122 heterozygous patients with albinism either by whole genome sequencing or by the use of our next-generation sequencing panel that includes the entire sequence of the TYR, OCA2, SLC45A2, GPR143 and HPS1 genes (exons, introns, flanking sequences) (see [11]). This evidence concerns the gene HPS1 and albinism.