Our verdict is Uncertain significance. Variant got 0 ACMG points: 4P and 4B. PP2PP3_ModeratePP5BS2
The NM_001368894.2(PAX6):āc.767G>Cā(p.Arg256Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000212 in 1,460,216 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars). Synonymous variant affecting the same amino acid position (i.e. R256R) has been classified as Likely benign.
PAX6 (HGNC:8620): (paired box 6) This gene encodes paired box protein Pax-6, one of many human homologs of the Drosophila melanogaster gene prd. In addition to a conserved paired box domain, a hallmark feature of this gene family, the encoded protein also contains a homeobox domain. Both domains are known to bind DNA and function as regulators of gene transcription. Activity of this protein is key in the development of neural tissues, particularly the eye. This gene is regulated by multiple enhancers located up to hundreds of kilobases distant from this locus. Mutations in this gene or in the enhancer regions can cause ocular disorders such as aniridia and Peter's anomaly. Use of alternate promoters and alternative splicing results in multiple transcript variants encoding different isoforms. Interestingly, inclusion of a particular alternate coding exon has been shown to increase the length of the paired box domain and alter its DNA binding specificity. Consequently, isoforms that carry the shorter paired box domain regulate a different set of genes compared to the isoforms carrying the longer paired box domain. [provided by RefSeq, Mar 2019]
Verdict is Uncertain_significance. Variant got 0 ACMG points.
PP2
Missense variant in gene, where missense usually causes diseases (based on misZ statistic), PAX6. . Gene score misZ 2.8175 (greater than the threshold 3.09). Trascript score misZ 3.256 (greater than threshold 3.09). GenCC has associacion of gene with Peters anomaly, coloboma, ocular, autosomal dominant, coloboma of optic nerve, aniridia 1, PAX6-related ocular dysgenesis, foveal hypoplasia 1, foveal hypoplasia-presenile cataract syndrome, isolated aniridia, diabetes mellitus, aniridia-cerebellar ataxia-intellectual disability syndrome, autosomal dominant keratitis, isolated optic nerve hypoplasia.
PP3
MetaRNN computational evidence supports a deleterious effect, 0.897
PP5
Variant 11-31794072-C-G is Pathogenic according to our data. Variant chr11-31794072-C-G is described in ClinVar as [Pathogenic]. Clinvar id is 3480.Status of the report is no_assertion_criteria_provided, 0 stars.