Variant 11-89227948-CT-C details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Pathogenic. Variant got 12 ACMG points: 12P and 0B. PVS1PM2PP5_Moderate

The NM_000372.5(TYR):c.1164del(p.His389ThrfsTer96) variant causes a frameshift change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000684 in 1,461,322 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: not found (cov: 32)

Exomes 𝑓: 0.0000068 ( 0 hom. )

Consequence

TYR
NM_000372.5 frameshift

Scores

Not classified

Clinical Significance

Pathogenic criteria provided, single submitter P:2O:1

Conservation

PhyloP100: 7.55

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 undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.

PM2

Very rare variant in population databases, with high coverage;

PP5

Variant 11-89227948-CT-C is Pathogenic according to our data. Variant chr11-89227948-CT-C is described in ClinVar as [Pathogenic]. Clinvar id is 3799.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr11-89227948-CT-C is described in Lovd as [Pathogenic]. Variant chr11-89227948-CT-C is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TYR	NM_000372.5 linkuse as main transcript	c.1164del	p.His389ThrfsTer96	frameshift_variant	3/5	ENST00000263321.6
TYR	XM_011542970.3 linkuse as main transcript	c.1164del	p.His389ThrfsTer95	frameshift_variant	3/6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TYR	ENST00000263321.6 linkuse as main transcript	c.1164del	p.His389ThrfsTer96	frameshift_variant	3/5	1	NM_000372.5	P1	P14679-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000119

AC:

AN:

251092

Hom.:

AF XY:

0.0000147

AC XY:

AN XY:

135716

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 SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000264

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000684

AC:

AN:

1461322

Hom.:

Cov.:

AF XY:

0.00000688

AC XY:

AN XY:

726978

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000900

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:2Other:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Pathogenic:1Other:1

not provided, no classification provided	literature only	Retina International	-	- -
Pathogenic, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Nov 14, 2023	This sequence change creates a premature translational stop signal (p.His389Thrfs*96) in the TYR gene. While this is not anticipated to result in nonsense mediated decay, it is expected to disrupt the last 141 amino acid(s) of the TYR protein. This variant is present in population databases (rs773463933, gnomAD 0.003%). This premature translational stop signal has been observed in individuals with Oculocutaneous albinism (PMID: 1642278, 18463683). This variant is also known as 388 CTT(Leu)-CT-FS. ClinVar contains an entry for this variant (Variation ID: 3799). This variant disrupts a region of the TYR protein in which other variant(s) (p.Asp448Asn) have been determined to be pathogenic (PMID: 1642278, 10987646, 13680365, 27734839). This suggests that this is a clinically significant region of the protein, and that variants that disrupt it are likely to be disease-causing. For these reasons, this variant has been classified as Pathogenic. -

Tyrosinase-negative oculocutaneous albinism

Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Jul 15, 1992

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.12

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