chr8-71271802-G-A

Position:

• chr8-71271802-G-A

Variant summary

Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PVS1 PM2 PP5_Very_Strong

The NM_000503.6(EYA1):​c.922C>T​(p.Arg308Ter) variant causes a stop gained change. The variant allele was found at a frequency of 0.000000684 in 1,461,878 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 (★★). Variant results in nonsense mediated mRNA decay.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: EYA1 NM_000503.6 stop_gained
• Clinical Significance: Pathogenic criteria provided, multiple submitters, no conflicts P:5
• Conservation: PhyloP100: 3.62

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]

ACMG classification

Verdict is Pathogenic. Variant got 18 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 8-71271802-G-A is Pathogenic according to our data. Variant chr8-71271802-G-A is described in ClinVar as [Pathogenic]. Clinvar id is 7929.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr8-71271802-G-A is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
EYA1	NM_000503.6	c.922C>T	p.Arg308Ter	stop_gained	10/18	ENST00000340726.8	NP_000494.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
EYA1	ENST00000340726.8	c.922C>T	p.Arg308Ter	stop_gained	10/18	1	NM_000503.6	ENSP00000342626	P4

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461878 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 727238

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.0000187

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:5

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

EYA1-related disorder Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

Feb 02, 2023

The EYA1 c.922C>T variant is predicted to result in premature protein termination (p.Arg308*). This variant has been reported in individuals with branchio-oto-renal syndrome (referred to as Arg275Term, Abdelhak et al. 1997. PubMed ID: 9020840; Orten et al. 2008. PubMed ID: 18220287; Unzaki et al. 2018. PubMed ID: 29500469). This variant has not been reported in a large population database (http://gnomad.broadinstitute.org), indicating this variant is rare. Nonsense variants in EYA1 are expected to be pathogenic. Given all the evidence, we interpret c.922C>T (p.Arg308*) as pathogenic. -

Melnick-Fraser syndrome Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Oct 21, 2021

For these reasons, this variant has been classified as Pathogenic. ClinVar contains an entry for this variant (Variation ID: 7929). This variant is also known as p.R275*. This premature translational stop signal has been observed in individual(s) with branchiootorenal syndrome (PMID: 9020840, 18220287, 29500469). This variant is not present in population databases (ExAC no frequency). This sequence change creates a premature translational stop signal (p.Arg308*) in the EYA1 gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in EYA1 are known to be pathogenic (PMID: 10464653, 18220287). -

not provided Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

GeneDx

Sep 20, 2024

Identified in multiple unrelated patients with features consistent with EYA1-related branchiootorenal spectrum disorder referred for genetic testing at GeneDx and in published literature (PMID: 9020840, 18220287); Nonsense variant predicted to result in protein truncation or nonsense mediated decay in a gene for which loss of function is a known mechanism of disease; Not observed at significant frequency in large population cohorts (gnomAD); This variant is associated with the following publications: (PMID: 25525159, 31738409, 24803398, 9020840, 18220287, 35939872) -

Branchiootorenal syndrome 1 Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Feb 01, 1997

- -

Rare genetic deafness Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Sep 17, 2011

The Arg308X variant in EYA1 has been reported in the literature in 5 individuals affected with branchio-oto-renal syndrome (BOR) or BOR related symptoms (Abdelh ak 1997, Orten 2008). This variant reportedly segregated with the clinical featu re of BOR in one family (Abdelhak 1997). This variant leads to a premature stop codon at position 308, which is predicted to lead to a truncated or absent prote in. In summary, this variant meets our criteria to be classified as pathogenic. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.63	D
BayesDel_noAF	Pathogenic	0.62
CADD	Pathogenic	41
DANN	Uncertain	1.0
Eigen	Pathogenic	0.77
Eigen_PC	Uncertain	0.64
FATHMM_MKL	Uncertain	0.89	D
MutationTaster	Benign	1.0	A;A;A;A;A;A;A
Vest4		0.81
GERP RS		4.8

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		Details are displayed if max score is > 0.2

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

Publications

LitVar

Other links and lift over

dbSNP: rs121909195; hg19: chr8-72184037; COSMIC: COSV58172873; COSMIC: COSV58172873;