chr11-89284787-G-T

Position:

chr11-89284787-G-T

Variant summary

Our verdict is Pathogenic. Variant got 16 ACMG points: 16P and 0B. PM2PM5PP3_StrongPP5_Very_Strong

The NM_000372.5(TYR):c.1199G>T(p.Trp400Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000807 in 1,611,442 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 Likely pathogenic (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. W400C) has been classified as Likely pathogenic.

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000069 ( 0 hom. )

Consequence

TYR
NM_000372.5 missense

Scores

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:9O:1

Conservation

PhyloP100: 9.40

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:

TYR (HGNC:):

TYR links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 16 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PM5

Other missense variant is known to change same aminoacid residue: Variant chr11-89284788-G-T is described in Lovd as [Likely_pathogenic].

PP3

MetaRNN computational evidence supports a deleterious effect, 0.992

PP5

Variant 11-89284787-G-T is Pathogenic according to our data. Variant chr11-89284787-G-T is described in ClinVar as [Likely_pathogenic]. Clinvar id is 99541.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr11-89284787-G-T is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TYR	NM_000372.5 linkuse as main transcript	c.1199G>T	p.Trp400Leu	missense_variant	4/5	ENST00000263321.6	NP_000363.1	P14679-1L8B082
TYR	XM_011542970.3 linkuse as main transcript	c.1199G>T	p.Trp400Leu	missense_variant	4/6		XP_011541272.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TYR	ENST00000263321.6 linkuse as main transcript	c.1199G>T	p.Trp400Leu	missense_variant	4/5	1	NM_000372.5	ENSP00000263321.4		P14679-1
TYR	ENST00000528243.1 linkuse as main transcript	n.197G>T		non_coding_transcript_exon_variant	2/3	5

Frequencies

GnomAD3 genomes

AF:

0.0000198

AC:

AN:

151760

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:

0.000583

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000360

AC:

AN:

250296

Hom.:

AF XY:

0.0000148

AC XY:

AN XY:

135310

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000490

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000685

AC:

AN:

1459682

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726202

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000202

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

9.00e-7

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000198

AC:

AN:

151760

Hom.:

Cov.:

AF XY:

0.0000405

AC XY:

AN XY:

74106

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000583

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000264

ExAC

AF:

0.0000247

AC:

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:9Other:1

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Pathogenic:2Other:1

not provided, no classification provided	literature only	Retina International	-	- -
Pathogenic, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 13, 2024	This sequence change replaces tryptophan, which is neutral and slightly polar, with leucine, which is neutral and non-polar, at codon 400 of the TYR protein (p.Trp400Leu). This variant is present in population databases (rs62645916, gnomAD 0.05%). This missense change has been observed in individuals with non-syndromic ocular albinism (PMID: 31077556). ClinVar contains an entry for this variant (Variation ID: 99541). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt TYR protein function with a positive predictive value of 80%. For these reasons, this variant has been classified as Pathogenic. -
Pathogenic, criteria provided, single submitter	clinical testing	GeneDx	Oct 19, 2020	In silico analysis, which includes protein predictors and evolutionary conservation, supports a deleterious effect; This variant is associated with the following publications: (PMID: 31199599, 19865097, 26165494, 31196117, 29658579, 22875490, 29437493, 20447099, 31229681, 25577957, 31077556, 10571953, 16570240, 22097729, 15591842, 30868138) -

Tyrosinase-negative oculocutaneous albinism

Pathogenic:2

Likely pathogenic, criteria provided, single submitter	clinical testing	Genome-Nilou Lab	Jul 22, 2021	- -
Likely pathogenic, criteria provided, single submitter	clinical testing	Genetic Services Laboratory, University of Chicago	Mar 31, 2016	- -

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

Jan 22, 2024

- -

Oculocutaneous albinism type 1B;C2677190:SKIN/HAIR/EYE PIGMENTATION 3, LIGHT/DARK SKIN;C4551504:Tyrosinase-negative oculocutaneous albinism;CN028925:Ocular albinism with congenital sensorineural hearing loss

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

Oct 31, 2018

- -

TYR-related disorder

Pathogenic:1

Pathogenic, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Jul 30, 2024

The TYR c.1199G>T variant is predicted to result in the amino acid substitution p.Trp400Leu. This variant has been reported as causative for autosomal recessive oculocutaneous albinism (Tsai et al. 1999. PubMed ID: 10571953; Liu et al. 2010. PubMed ID: 20447099; Wei et al. 2010. PubMed ID: 19865097; Zhong et al. 2019. PubMed ID: 31077556). This variant is reported in 0.050% of alleles in individuals of East Asian descent in gnomAD. 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 27, 2024

- -

Oculocutaneous albinism type 1B;C4551504:Tyrosinase-negative oculocutaneous albinism

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Juno Genomics, Hangzhou Juno Genomics, Inc

PM3_VeryStrong+PP4+PM2_Supporting+PP3_Strong -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.96

BayesDel_addAF

Pathogenic

0.32

BayesDel_noAF

Pathogenic

0.57

CADD

Pathogenic

DANN

Uncertain

0.99

DEOGEN2

Pathogenic

0.99

Eigen

Pathogenic

0.97

Eigen_PC

Pathogenic

0.86

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Pathogenic

0.98

M_CAP

Pathogenic

0.84

MetaRNN

Pathogenic

0.99

MetaSVM

Pathogenic

0.93

MutationAssessor

Pathogenic

4.4

PrimateAI

Uncertain

0.72

PROVEAN

Pathogenic

-9.6

REVEL

Pathogenic

0.98

Sift

Pathogenic

0.0

Sift4G

Pathogenic

0.0

Polyphen

1.0

Vest4

0.87

MutPred

0.94

Loss of catalytic residue at W400 (P = 0.0423);

MVP

0.99

MPC

0.044

ClinPred

1.0

GERP RS

4.7

Varity_R

0.98

gMVP

0.97

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