11-31802826-C-A

Variant names:

• chr11-31802826-C-A
• rs1131692285
• ENST00000640872.1:c.-390G>T

Variant summary

Our verdict is Likely pathogenic. The variant received 7 ACMG points: 7P and 0B. PM2 PP3_Strong PP5

The NM_001368929.2(PAX6):​c.-432G>T variant causes a 5 prime UTR premature start codon gain change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars).

• Frequency: Genomes: not found (cov: 31)
• Consequence: PAX6 NM_001368929.2 5_prime_UTR_premature_start_codon_gain
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 5.02
• Publications: 2 publications found

Genes affected

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]

PAX6 Gene-Disease associations (from GenCC):

• aniridia 1

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: G2P, Genomics England PanelApp, Labcorp Genetics (formerly Invitae)
• PAX6-related ocular dysgenesis

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
• Peters anomaly

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), G2P, Orphanet
• diabetes mellitus

  Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp
• aniridia-cerebellar ataxia-intellectual disability syndrome

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• autosomal dominant keratitis

  Inheritance: AD, Unknown Classification: SUPPORTIVE, LIMITED Submitted by: Orphanet, Labcorp Genetics (formerly Invitae)
• foveal hypoplasia-presenile cataract syndrome

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• isolated aniridia

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• isolated optic nerve hypoplasia

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_pathogenic. The variant received 7 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: BayesDel_addAF computational evidence supports a deleterious effect, 0.625
• PP5: Variant 11-31802826-C-A is Pathogenic according to our data. Variant chr11-31802826-C-A is described in ClinVar as Pathogenic. ClinVar VariationId is 800383.Status of the report is no_assertion_criteria_provided, 0 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001368929.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PAX6	NM_001368894.2	MANE Select	c.19G>T	p.Gly7*	stop_gained	Exon 5 of 14	NP_001355823.1	P26367-2
	PAX6	NM_001368929.2		c.-432G>T		5_prime_UTR_premature_start_codon_gain	Exon 1 of 9	NP_001355858.1
	PAX6	NM_001310160.2		c.-763G>T		5_prime_UTR_premature_start_codon_gain	Exon 1 of 10	NP_001297089.1	A0A1W2PRA8

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PAX6	ENST00000640872.1	TSL:1	c.-390G>T		5_prime_UTR_premature_start_codon_gain	Exon 1 of 9	ENSP00000491065.1	A0A1W2PNS7
	PAX6	ENST00000640368.2	TSL:5 MANE Select	c.19G>T	p.Gly7*	stop_gained	Exon 5 of 14	ENSP00000492024.1	P26367-2
	PAX6	ENST00000419022.6	TSL:1	c.19G>T	p.Gly7*	stop_gained	Exon 5 of 14	ENSP00000404100.1	P26367-2

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 31

ClinVar

ClinVar submissions

Significance: Pathogenic

Revision: no assertion criteria provided

Pathogenic	VUS	Benign	Condition
1	-	-	Aniridia 1 (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.63	D
BayesDel_noAF	Pathogenic	0.57
CADD	Pathogenic	42
DANN	Uncertain	0.99
Eigen	Pathogenic	1.0
Eigen_PC	Pathogenic	0.89
FATHMM_MKL	Pathogenic	0.98	D
PhyloP100		5.0
Vest4		0.76
GERP RS		4.9
PromoterAI		-0.033	Neutral
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Mutation Taster		=0/200	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs1131692285; hg19: chr11-31824374;