6-64081863-AAT-TAC

Variant names:

• chr6-64081863-AAT-TAC
• NM_001142800.2:c.6562_6564delATTinsGTA
• EYS p.Ile2188Val

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM5

The NM_001142800.2(EYS):​c.6562_6564delATTinsGTA​(p.Ile2188Val) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. It is difficult to determine the true allele frequency of this variant because it is of type MNV, and the frequency of such variant types in population databases may be underestimated and unreliable. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another nucleotide change resulting in the same amino acid substitution has been previously reported as Likely benign in ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. I2188T) has been classified as Likely pathogenic.

• Frequency: Genomes: not found (cov: 32)
• Consequence: EYS NM_001142800.2 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 4.62
• Publications: 0 publications found

Genes affected

EYS (HGNC:21555): (eyes shut homolog) The product of this gene contains multiple epidermal growth factor (EGF)-like and LamG domains. The protein is expressed in the photoreceptor layer of the retina, and the gene is mutated in autosomal recessive retinitis pigmentosa. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Dec 2008]

EYS Gene-Disease associations (from GenCC):

• EYS-related retinopathy

  Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
• retinitis pigmentosa

  Inheritance: AR, AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: G2P, Orphanet
• retinitis pigmentosa 25

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, Laboratory for Molecular Medicine

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM5: Other missense variant is known to change same aminoacid residue: Variant chr6-64081864-A-G is described in ClinVar as Pathogenic/Likely_pathogenic. ClinVar VariationId is 943623.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001142800.2. 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
	EYS	NM_001142800.2	MANE Select	c.6562_6564delATTinsGTA	p.Ile2188Val	missense	N/A	NP_001136272.1	Q5T1H1-1
	EYS	NM_001292009.2		c.6562_6564delATTinsGTA	p.Ile2188Val	missense	N/A	NP_001278938.1	Q5T1H1-3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	EYS	ENST00000503581.6	TSL:5 MANE Select	c.6562_6564delATTinsGTA	p.Ile2188Val	missense	N/A	ENSP00000424243.1	Q5T1H1-1
	EYS	ENST00000370621.7	TSL:1	c.6562_6564delATTinsGTA	p.Ile2188Val	missense	N/A	ENSP00000359655.3	Q5T1H1-3

Frequencies

GnomAD3 genomes Cov.: 32

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		4.6

Splicing

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

hg19: chr6-64791756;