rs397517919

Variant names:

• chr8-71211156-C-CA
• rs397517919
• NM_000503.6:c.1697_1698insT

Variant summary

Our verdict is Likely pathogenic. The variant received 8 ACMG points: 8P and 0B. PVS1_Strong PM2 PP5_Moderate

The NM_000503.6(EYA1):​c.1697_1698insT​(p.Lys566AsnfsTer66) variant causes a frameshift, splice region change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. 1/1 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Pathogenic (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: EYA1 NM_000503.6 frameshift, splice_region
• Clinical Significance: Pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 7.97
• Publications: 4 publications found

Genes affected

EYA1 (HGNC:3519): (EYA transcriptional coactivator and phosphatase 1) This gene encodes a member of the eyes absent (EYA) family of proteins. The encoded protein may play a role in the developing kidney, branchial arches, eye, and ear. Mutations of this gene have been associated with branchiootorenal dysplasia syndrome, branchiootic syndrome, and sporadic cases of congenital cataracts and ocular anterior segment anomalies. A similar protein in mice can act as a transcriptional activator. Alternatively spliced transcript variants have been identified for this gene. [provided by RefSeq, Dec 2013]

EYA1 Gene-Disease associations (from GenCC):

• branchio-oto-renal syndrome

  Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet
• branchiootorenal syndrome 1

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae)
• branchiootic syndrome 1

  Inheritance: AD Classification: STRONG Submitted by: PanelApp Australia
• branchiootic syndrome

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

LOC105375894 (HGNC:):

ACMG classification

Our verdict: Likely_pathogenic. The variant received 8 ACMG points.

• PVS1: Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most 50 bp of the penultimate exon, not predicted to undergo nonsense mediated mRNA decay. There are 13 pathogenic variants in the truncated region.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 8-71211156-C-CA is Pathogenic according to our data. Variant chr8-71211156-C-CA is described in ClinVar as Pathogenic. ClinVar VariationId is 48104.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
EYA1	NM_000503.6	c.1697_1698insT	p.Lys566AsnfsTer66	frameshift_variant, splice_region_variant	Exon 17 of 18	ENST00000340726.8	NP_000494.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
EYA1	ENST00000340726.8	c.1697_1698insT	p.Lys566AsnfsTer66	frameshift_variant, splice_region_variant	Exon 17 of 18	1	NM_000503.6	ENSP00000342626.3

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 28

GnomAD4 genome Cov.: 33

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

Submissions by phenotype

Rare genetic deafness Pathogenic:1

Oct 28, 2010

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The Lys566fs variant in EYA1 has not been reported in the literature nor previou sly identified by our laboratory. The Lys566fs variant is predicted to cause a f rameshift, which removes the last 26 amino acid residues of the protein and repl aces them with 65 different residues. Due to the substantial predicted impact to the protein, this variant meets our criteria to be classified as pathogenic. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
PhyloP100		8.0
Mutation Taster		=0/200	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.050		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: rs397517919; hg19: chr8-72123391;