These genes and these SNPs are unique to PXF, and separately, age-related cataracts in the Mayan population of Guatemala have not previously been reported by other groups and/or the National Center for Biotechnology Information Phenotype-Genotype Integrator (NCBI PhenGenI) [38,43,44,46,75,77,143]. The gene discussed is PEX19; the disease is cataract.