rs142170797

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 3P and 1B. PM1PP2BS2_Supporting

The NM_000372.5(TYR):c.915C>A(p.Asp305Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000348 in 1,613,694 control chromosomes in the GnomAD database, including 3 homozygotes. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. D305N) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00020 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00036 ( 3 hom. )

Consequence

TYR
NM_000372.5 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:1U:9

Conservation

PhyloP100: 0.723

Publications

2 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: Orphanet, G2P, 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: Uncertain_significance. The variant received 2 ACMG points.

PM1

In a hotspot region, there are 6 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 8 uncertain in NM_000372.5

PP2

Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 116 curated pathogenic missense variants (we use a threshold of 10). The gene has 3 curated benign missense variants. Gene score misZ: -1.9514 (below the threshold of 3.09). Trascript score misZ: -0.85521 (below the threshold of 3.09). GenCC associations: The gene is linked to Waardenburg syndrome type 2, oculocutaneous albinism type 1A, oculocutaneous albinism type 1, oculocutaneous albinism type 1B, minimal pigment oculocutaneous albinism type 1, temperature-sensitive oculocutaneous albinism type 1.

BS2

High Homozygotes in GnomAdExome4 at 3 AD,AR geneVariant has number of homozygotes lower than other variant known as pathogenic in the gene, so the strength is limited to Supporting.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000372.5. 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
	TYR	NM_000372.5	MANE Select	c.915C>A	p.Asp305Glu	missense	Exon 2 of 5	NP_000363.1	P14679-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TYR	ENST00000263321.6	TSL:1 MANE Select	c.915C>A	p.Asp305Glu	missense	Exon 2 of 5	ENSP00000263321.4	P14679-1
	TYR	ENST00000526139.1	TSL:1	n.976C>A		non_coding_transcript_exon	Exon 2 of 3

Frequencies

GnomAD3 genomes

AF:

0.000210

AC:

AN:

152068

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000328

Gnomad ASJ

AF:

0.000288

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000829

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000294

Gnomad OTH

AF:

0.000480

GnomAD2 exomes

AF:

0.000299

AC:

AN:

251188

AF XY:

0.000324

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000232

Gnomad ASJ exome

AF:

0.000199

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000440

Gnomad OTH exome

AF:

0.000326

GnomAD4 exome

AF:

0.000363

AC:

531

AN:

1461508

Hom.:

Cov.:

AF XY:

0.000406

AC XY:

295

AN XY:

727046

show subpopulations

African (AFR)

AF:

0.0000299

AC:

AN:

33448

American (AMR)

AF:

0.000179

AC:

AN:

44670

Ashkenazi Jewish (ASJ)

AF:

0.000230

AC:

AN:

26116

East Asian (EAS)

AF:

0.00

AC:

AN:

39690

South Asian (SAS)

AF:

0.000522

AC:

AN:

86256

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53412

Middle Eastern (MID)

AF:

0.00226

AC:

AN:

5764

European-Non Finnish (NFE)

AF:

0.000386

AC:

429

AN:

1111780

Other (OTH)

AF:

0.000480

AC:

AN:

60372

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.471

Heterozygous variant carriers

120

150

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

100

<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:

0.000204

AC:

AN:

152186

Hom.:

Cov.:

AF XY:

0.000215

AC XY:

AN XY:

74412

show subpopulations

African (AFR)

AF:

0.0000241

AC:

AN:

41534

American (AMR)

AF:

0.000328

AC:

AN:

15264

Ashkenazi Jewish (ASJ)

AF:

0.000288

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5164

South Asian (SAS)

AF:

0.000622

AC:

AN:

4822

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10608

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000294

AC:

AN:

68010

Other (OTH)

AF:

0.000475

AC:

AN:

2106

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.491

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome 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

Alfa

AF:

0.000364

Hom.:

Bravo

AF:

0.000253

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000233

AC:

ExAC

AF:

0.000346

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.000655

EpiControl

AF:

0.000356

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (3)

Oculocutaneous albinism type 1A (2)

not specified (1)

Oculocutaneous albinism (1)

Oculocutaneous albinism type 1B (1)

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

Oculocutaneous albinism type 1B;C2677190:SKIN/HAIR/EYE PIGMENTATION 3, LIGHT/DARK SKIN;C4551504:Oculocutaneous albinism type 1A;CN028925:Ocular albinism with congenital sensorineural hearing loss (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.20

BayesDel_addAF

Pathogenic

0.18

BayesDel_noAF

Pathogenic

0.34

CADD

Benign

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.75

Eigen

Uncertain

0.34

Eigen_PC

Uncertain

0.28

FATHMM_MKL

Uncertain

0.81

LIST_S2

Uncertain

0.95

M_CAP

Uncertain

0.25

MetaRNN

Uncertain

0.73

MetaSVM

Pathogenic

0.91

MutationAssessor

Uncertain

2.7

PhyloP100

0.72

PrimateAI

Benign

0.42

PROVEAN

Benign

-1.1

REVEL

Pathogenic

0.67

Sift

Benign

0.067

Sift4G

Benign

0.078

Polyphen

1.0

Vest4

0.84

MutPred

0.55

Gain of methylation at K306 (P = 0.0793)

MVP

0.99

MPC

0.075

ClinPred

0.11

GERP RS

2.7

Varity_R

0.11

gMVP

0.77

Mutation Taster

=18/82

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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over