rs61754368

Variant names:

Variant summary

Our verdict is Pathogenic. The variant received 16 ACMG points: 16P and 0B. PVS1PP5_Very_Strong

The NM_000372.5(TYR):c.732_733delTG(p.Cys244fs) variant causes a frameshift change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000285 in 1,613,778 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Pathogenic (★★). Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000027 ( 0 hom. )

Consequence

TYR
NM_000372.5 frameshift

Scores

Not classified

Clinical Significance

Pathogenic criteria provided, multiple submitters, no conflicts P:11O:1

Conservation

PhyloP100: 7.58

Publications

5 publications found

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 Gene-Disease associations (from GenCC):

oculocutaneous albinism type 1
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
oculocutaneous albinism type 1A
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Orphanet, Labcorp Genetics (formerly Invitae), Laboratory for Molecular Medicine
Waardenburg syndrome type 2
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
minimal pigment oculocutaneous albinism type 1
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
oculocutaneous albinism type 1B
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
temperature-sensitive oculocutaneous albinism type 1
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

TYR links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Pathogenic. The variant received 16 ACMG points.

PVS1

Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.

PP5

Variant 11-89178681-AGT-A is Pathogenic according to our data. Variant chr11-89178681-AGT-A is described in ClinVar as [Pathogenic]. Clinvar id is 3787.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TYR	NM_000372.5 link	c.732_733delTG	p.Cys244fs	frameshift_variant	Exon 1 of 5	ENST00000263321.6	NP_000363.1	P14679-1L8B082
TYR	XM_011542970.3 link	c.732_733delTG	p.Cys244fs	frameshift_variant	Exon 1 of 6		XP_011541272.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TYR	ENST00000263321.6 link	c.732_733delTG	p.Cys244fs	frameshift_variant	Exon 1 of 5	1	NM_000372.5	ENSP00000263321.4		P14679-1
TYR	ENST00000526139.1 link	n.793_794delTG		non_coding_transcript_exon_variant	Exon 1 of 3	1

Frequencies

GnomAD3 genomes

AF:

0.0000394

AC:

AN:

152132

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.0000882

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000199

AC:

AN:

251150

AF XY:

0.0000295

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000440

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000274

AC:

AN:

1461646

Hom.:

AF XY:

0.0000234

AC XY:

AN XY:

727076

show subpopulations

African (AFR)

AF:

0.0000299

AC:

AN:

33478

American (AMR)

AF:

0.00

AC:

AN:

44720

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26112

East Asian (EAS)

AF:

0.00

AC:

AN:

39698

South Asian (SAS)

AF:

0.00

AC:

AN:

86252

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53414

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5762

European-Non Finnish (NFE)

AF:

0.0000351

AC:

AN:

1111822

Other (OTH)

AF:

0.00

AC:

AN:

60388

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.474

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0000394

AC:

AN:

152132

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74310

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41432

American (AMR)

AF:

0.00

AC:

AN:

15280

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5168

South Asian (SAS)

AF:

0.00

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000882

AC:

AN:

68014

Other (OTH)

AF:

0.00

AC:

AN:

2090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.500

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.000162

Hom.:

Bravo

AF:

0.0000189

EpiCase

AF:

0.000273

EpiControl

AF:

0.00

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:11Other:1

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Pathogenic:5Other:1

Mar 12, 2015

Eurofins Ntd Llc (ga)

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Jul 01, 2017

CeGaT Center for Human Genetics Tuebingen

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Dec 16, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change creates a premature translational stop signal (p.Cys244*) in the TYR gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in TYR are known to be pathogenic (PMID: 23504663). This variant is present in population databases (rs747193559, gnomAD 0.006%). This premature translational stop signal has been observed in individual(s) with clinical features of oculocutaneous albinism (PMID: 28667292, 28771251, 28976636). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. ClinVar contains an entry for this variant (Variation ID: 3787). Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. For these reasons, this variant has been classified as Pathogenic. -

May 09, 2024

GeneDx

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

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; This variant is associated with the following publications: (PMID: 28771251, 28667292, 28976636, 28451379, 23504663, 1905879) -

Retina International

Significance:not provided

Review Status:no classification provided

Collection Method:literature only

- -

Apr 09, 2020

Revvity Omics, Revvity

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Oculocutaneous albinism type 1A

Pathogenic:2

Jul 22, 2021

Genome-Nilou Lab

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Jul 01, 1991

OMIM

Significance:Pathogenic

Review Status:no assertion criteria provided

Collection Method:literature only

- -

Oculocutaneous albinism type 1B;C2677190:SKIN/HAIR/EYE PIGMENTATION 3, LIGHT/DARK SKIN;C4551504:Oculocutaneous albinism type 1A

Pathogenic:1

Jan 29, 2024

Fulgent Genetics, Fulgent Genetics

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

TYR-related disorder

Pathogenic:1

Aug 01, 2024

PreventionGenetics, part of Exact Sciences

Significance:Pathogenic

Review Status:no assertion criteria provided

Collection Method:clinical testing

The TYR c.732_733delTG variant is predicted to result in premature protein termination (p.Cys244*). This variant has been reported in the compound heterozygous state in multiple individuals with oculocutaneous albinism (Oetting et al. 1991. PubMed ID: 1905879; Norman et al. 2017. PubMed ID: 28667292; Marti et al. 2017. PubMed ID: 28976636). This variant is reported in 0.0054% of alleles in individuals of European (Non-Finnish) descent in gnomAD. Nonsense variants in TYR are an established mechanism of disease. Given all the evidence, we interpret this variant as pathogenic. -

Oculocutaneous albinism type 1B;C4551504:Oculocutaneous albinism type 1A

Pathogenic:1

Jan 27, 2022

Department of Pathology and Laboratory Medicine, Sinai Health System

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:research

- -

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

Pathogenic:1

Mar 14, 2024

Baylor Genetics

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

PhyloP100

7.6

Mutation Taster

=1/199

disease causing (ClinVar)

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over