dbSNP rs142680641: SLC45A2:p.Arg451His (chr5-33947179-C-T) – ACMG Classification: Likely_benign (-4 pts)

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BP4_Strong

The NM_016180.5(SLC45A2):c.1352G>A(p.Arg451His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000789 in 1,614,190 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 17/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R451C) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00057 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00081 ( 1 hom. )

Consequence

SLC45A2
NM_016180.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:5

Conservation

PhyloP100: 0.0540

Publications

6 publications found

Variant links:

Genes affected

SLC45A2 (HGNC:16472): (solute carrier family 45 member 2) This gene encodes a transporter protein that mediates melanin synthesis. The protein is expressed in a high percentage of melanoma cell lines. Mutations in this gene are a cause of oculocutaneous albinism type 4, and polymorphisms in this gene are associated with variations in skin and hair color. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Mar 2009]

SLC45A2 Gene-Disease associations (from GenCC):

oculocutaneous albinism type 4
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), Orphanet, G2P, PanelApp Australia

SLC45A2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -4 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.006589085).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_016180.5. 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
	SLC45A2	NM_016180.5	MANE Select	c.1352G>A	p.Arg451His	missense	Exon 6 of 7	NP_057264.4
	SLC45A2	NM_001012509.4		c.1352G>A	p.Arg451His	missense	Exon 6 of 6	NP_001012527.2	Q9UMX9-4

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
SLC45A2	ENST00000296589.9	TSL:1 MANE Select	c.1352G>A	p.Arg451His	missense	Exon 6 of 7	ENSP00000296589.4	Q9UMX9-1
SLC45A2	ENST00000382102.7	TSL:1	c.1352G>A	p.Arg451His	missense	Exon 6 of 6	ENSP00000371534.3	Q9UMX9-4
SLC45A2	ENST00000510600.1	TSL:3	c.*89G>A		downstream_gene	N/A	ENSP00000424010.1	D6RBP8

Frequencies

GnomAD3 genomes

AF:

0.000572

AC:

AN:

152178

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000362

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00207

Gnomad FIN

AF:

0.0000942

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000852

Gnomad OTH

AF:

0.000478

GnomAD2 exomes

AF:

0.000716

AC:

180

AN:

251482

AF XY:

0.000750

show subpopulations

Gnomad AFR exome

AF:

0.000431

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.000139

Gnomad NFE exome

AF:

0.00101

Gnomad OTH exome

AF:

0.000814

GnomAD4 exome

AF:

0.000812

AC:

1187

AN:

1461894

Hom.:

Cov.:

AF XY:

0.000802

AC XY:

583

AN XY:

727248

show subpopulations

African (AFR)

AF:

0.000687

AC:

AN:

33480

American (AMR)

AF:

0.0000224

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00126

AC:

109

AN:

86258

European-Finnish (FIN)

AF:

0.000187

AC:

AN:

53420

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.000907

AC:

1009

AN:

1112012

Other (OTH)

AF:

0.000580

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.477

Heterozygous variant carriers

175

263

350

438

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

126

168

210

<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:

0.000571

AC:

AN:

152296

Hom.:

Cov.:

AF XY:

0.000551

AC XY:

AN XY:

74472

show subpopulations

African (AFR)

AF:

0.000361

AC:

AN:

41560

American (AMR)

AF:

0.000131

AC:

AN:

15302

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5182

South Asian (SAS)

AF:

0.00207

AC:

AN:

4822

European-Finnish (FIN)

AF:

0.0000942

AC:

AN:

10614

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000853

AC:

AN:

68028

Other (OTH)

AF:

0.000473

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.490

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:

0.000796

Hom.:

Bravo

AF:

0.000552

TwinsUK

AF:

0.00216

AC:

ALSPAC

AF:

0.00130

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000814

AC:

ExAC

AF:

0.000840

AC:

102

Asia WGS

AF:

0.00289

AC:

AN:

3478

EpiCase

AF:

0.000763

EpiControl

AF:

0.000830

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (3)

not specified (1)

Oculocutaneous albinism type 4 (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.071

BayesDel_addAF

Benign

-0.44

BayesDel_noAF

Benign

-0.41

CADD

Benign

(source)

DANN

Benign

0.95

DEOGEN2

Benign

0.29

Eigen

Benign

-0.79

Eigen_PC

Benign

-0.77

FATHMM_MKL

Benign

0.092

LIST_S2

Benign

0.77

M_CAP

Benign

0.032

MetaRNN

Benign

0.0066

MetaSVM

Benign

-0.57

MutationAssessor

Benign

1.4

PhyloP100

0.054

PrimateAI

Benign

0.23

PROVEAN

Benign

-1.3

REVEL

Benign

0.13

Sift

Benign

0.20

Sift4G

Benign

0.16

Polyphen

0.0010

Vest4

0.19

MVP

0.77

MPC

0.044

ClinPred

0.0097

GERP RS

0.10

Varity_R

0.042

gMVP

0.49

Mutation Taster

=85/15

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.080

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