Variant rs61754399 details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Pathogenic. Variant got 12 ACMG points: 12P and 0B. PVS1_StrongPP5_Very_Strong

The NM_000372.5(TYR):c.1467dup(p.Ala490CysfsTer20) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000138 in 152,208 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Likely pathogenic (★★).

Frequency

Genomes: 𝑓 0.00014 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00024 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

TYR
NM_000372.5 frameshift

Scores

Not classified

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:15O:1

Conservation

PhyloP100: -1.18

Variant links:

Genes affected

TYR (HGNC:12442): (tyrosinase) The enzyme encoded by this gene catalyzes the first 2 steps, and at least 1 subsequent step, in the conversion of tyrosine to melanin. The enzyme has both tyrosine hydroxylase and dopa oxidase catalytic activities, and requires copper for function. Mutations in this gene result in oculocutaneous albinism, and nonpathologic polymorphisms result in skin pigmentation variation. The human genome contains a pseudogene similar to the 3' half of this gene. [provided by RefSeq, Oct 2008]

TYR links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 12 ACMG points.

PVS1

Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most exon, not predicted to undergo nonsense mediated mRNA decay. There are 6 pathogenic variants in the truncated region.

PP5

Variant 11-89295242-C-CT is Pathogenic according to our data. Variant chr11-89295242-C-CT is described in ClinVar as [Likely_pathogenic]. Clinvar id is 3803.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TYR	NM_000372.5 linkuse as main transcript	c.1467dup	p.Ala490CysfsTer20	frameshift_variant	5/5	ENST00000263321.6
TYR	XM_011542970.3 linkuse as main transcript	c.*145dup		3_prime_UTR_variant	6/6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TYR	ENST00000263321.6 linkuse as main transcript	c.1467dup	p.Ala490CysfsTer20	frameshift_variant	5/5	1	NM_000372.5	P1	P14679-1
TYR	ENST00000528243.1 linkuse as main transcript	n.465dup		non_coding_transcript_exon_variant	3/3	5

Frequencies

GnomAD3 genomes

AF:

0.000138

AC:

AN:

152208

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000121

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000235

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000179

AC:

AN:

251060

Hom.:

AF XY:

0.000147

AC XY:

AN XY:

135728

show subpopulations

Gnomad AFR exome

AF:

0.000185

Gnomad AMR exome

AF:

0.000520

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000203

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

Data not reliable, filtered out with message: AS_VQSR

AF:

0.000240

AC:

351

AN:

1461666

Hom.:

Cov.:

AF XY:

0.000220

AC XY:

160

AN XY:

727146

show subpopulations

Gnomad4 AFR exome

AF:

0.0000896

Gnomad4 AMR exome

AF:

0.000358

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000289

Gnomad4 OTH exome

AF:

0.000182

GnomAD4 genome

AF:

0.000138

AC:

AN:

152208

Hom.:

Cov.:

AF XY:

0.000161

AC XY:

AN XY:

74368

show subpopulations

Gnomad4 AFR

AF:

0.000121

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000235

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000174

Hom.:

Bravo

AF:

0.000298

EpiCase

AF:

0.000218

EpiControl

AF:

0.000237

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:15Other:1

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Pathogenic:6Other:1

Pathogenic, no assertion criteria provided	clinical testing	Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center	-	- -
not provided, no classification provided	literature only	Retina International	-	- -
Pathogenic, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Jul 19, 2016	The c.1467dupT pathogenic variant has been reported in individuals with oculocutaneous albinism1-3 and is of a type expected to cause disease.[1-3] 1. Chintamaneni et al., Proc Natl Acad Sci U S A. 1991 Jun 15;88(12):5272-6. 2. King et al., Hum Genet. 2003 Nov;113(6):502-13. 3. Grønskov et al., Invest Ophthalmol Vis Sci. 2009 Mar;50(3):1058-64. -
Pathogenic, criteria provided, single submitter	clinical testing	GeneDx	Aug 02, 2023	Frameshift variant in the C-terminus predicted to result in protein truncation, as the last 40 amino acids are lost and replaced with 19 incorrect amino acids in published literature (Chintamaneni et al., 1991); Published functional studies demonstrate c.1467dupT impairs the C-terminus of the protein and reduces enzyme activity (Chintamaneni et al., 1991); This variant is associated with the following publications: (PMID: 13680365, 1711223, 28667292, 19060277, 1642278, 28451379, 18821858, 18463683, 1409426, 15146472, 34426522, 26689913, 28976636, 18326704) -
Pathogenic, no assertion criteria provided	clinical testing	Clinical Genetics, Academic Medical Center	-	- -
Pathogenic, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Nov 02, 2022	This sequence change creates a premature translational stop signal (p.Ala490Cysfs*20) in the TYR gene. While this is not anticipated to result in nonsense mediated decay, it is expected to disrupt the last 40 amino acid(s) of the TYR protein. This variant is present in population databases (rs543973275, gnomAD 0.05%). This premature translational stop signal has been observed in individuals with oculocutaneous albinism (PMID: 1642278, 1711223, 13680365, 18463683). ClinVar contains an entry for this variant (Variation ID: 3803). For these reasons, this variant has been classified as Pathogenic. -
Pathogenic, criteria provided, single submitter	clinical testing	Revvity Omics, Revvity	Feb 11, 2022	- -

Tyrosinase-negative oculocutaneous albinism

Pathogenic:4

Pathogenic, no assertion criteria provided	literature only	OMIM	Jul 15, 1992	- -
Pathogenic, criteria provided, single submitter	clinical testing	Genome-Nilou Lab	Jul 22, 2021	- -
Likely pathogenic, criteria provided, single submitter	clinical testing	MGZ Medical Genetics Center	Jan 10, 2022	- -
Pathogenic, criteria provided, single submitter	clinical testing	Genetic Services Laboratory, University of Chicago	Mar 31, 2017	- -

Oculocutaneous albinism type 1B

Pathogenic:2

Pathogenic, criteria provided, single submitter	clinical testing	Institute of Human Genetics, University of Leipzig Medical Center	May 17, 2023	Identified as compund heterozygous with NM_000372.5:c.1205G>A. Criteria applied: PM3_VSTR,PVS1_MOD -
Pathogenic, criteria provided, single submitter	clinical testing	Equipe Genetique des Anomalies du Developpement, Université de Bourgogne	Feb 17, 2023	This variant was observed in compound heterozygosity with c.[575C>A;1205G>A] variants (hypomorphic allele) -

Oculocutaneous albinism type 1B;C2677190:SKIN/HAIR/EYE PIGMENTATION 3, LIGHT/DARK SKIN;C4551504:Tyrosinase-negative oculocutaneous albinism

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

Sep 27, 2021

- -

TYR-related disorder

Pathogenic:1

Pathogenic, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Jul 26, 2024

The TYR c.1467dupT variant is predicted to result in a frameshift and premature protein termination (p.Ala490Cysfs*20). This variant has been reported in the compound heterozygous state in individuals with oculocutaneous albinism (King et al. 2003. PubMed ID: 13680365; Norman et al. 2017. PubMed ID: 28667292; Marti et al. 2018. PubMed ID: 28976636). This variant is reported in 0.051% of alleles in individuals of Latino descent in gnomAD. Frameshift variants in TYR are expected to be pathogenic, and this variant has been classified as pathogenic by multiple independent submitters to the ClinVar database (https://www.ncbi.nlm.nih.gov/clinvar/variation/3803). Given the evidence, we interpret this variant as pathogenic. -

SKIN/HAIR/EYE PIGMENTATION 3, LIGHT/DARK SKIN

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Baylor Genetics

Mar 16, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over