Genetic Variant SLC40A1:p.Asp270Val (chr2-189564177-T-A) – ACMG Classification: Likely_benign (-3 pts)

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 0P and 3B. BP4BP6_Moderate

The NM_014585.6(SLC40A1):c.809A>T(p.Asp270Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000521 in 1,613,200 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.00022 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000034 ( 0 hom. )

Consequence

SLC40A1
NM_014585.6 missense

Scores

Clinical Significance

Likely benign criteria provided, single submitter P:1B:1

Conservation

PhyloP100: 0.338

Publications

8 publications found

Variant links:

Genes affected

SLC40A1 (HGNC:10909): (solute carrier family 40 member 1) The protein encoded by this gene is a cell membrane protein that may be involved in iron export from duodenal epithelial cells. Defects in this gene are a cause of hemochromatosis type 4 (HFE4). [provided by RefSeq, Jul 2008]

SLC40A1 Gene-Disease associations (from GenCC):

hemochromatosis type 4
Inheritance: AR, AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Ambry Genetics, Orphanet, Labcorp Genetics (formerly Invitae), Genomics England PanelApp

SLC40A1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -3 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.3451803).

BP6

Variant 2-189564177-T-A is Benign according to our data. Variant chr2-189564177-T-A is described in ClinVar as Likely_benign. ClinVar VariationId is 208987.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SLC40A1	NM_014585.6 link	c.809A>T	p.Asp270Val	missense_variant	Exon 7 of 8	ENST00000261024.7	NP_055400.1	Q9NP59
SLC40A1	XM_047444066.1 link	c.689A>T	p.Asp230Val	missense_variant	Exon 7 of 8		XP_047300022.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SLC40A1	ENST00000261024.7 link	c.809A>T	p.Asp270Val	missense_variant	Exon 7 of 8	1	NM_014585.6	ENSP00000261024.3		Q9NP59

Frequencies

GnomAD3 genomes

AF:

0.000224

AC:

AN:

152048

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000748

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:

0.0000294

Gnomad OTH

AF:

0.000479

GnomAD2 exomes

AF:

0.0000518

AC:

AN:

250728

AF XY:

0.0000369

show subpopulations

Gnomad AFR exome

AF:

0.000677

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:

0.0000176

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000342

AC:

AN:

1461152

Hom.:

Cov.:

AF XY:

0.0000330

AC XY:

AN XY:

726866

show subpopulations

African (AFR)

AF:

0.00132

AC:

AN:

33422

American (AMR)

AF:

0.0000449

AC:

AN:

44588

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26088

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86100

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53410

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5760

European-Non Finnish (NFE)

AF:

0.00000270

AC:

AN:

1111710

Other (OTH)

AF:

0.0000166

AC:

AN:

60374

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.481

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:

0.000224

AC:

AN:

152048

Hom.:

Cov.:

AF XY:

0.000215

AC XY:

AN XY:

74264

show subpopulations

African (AFR)

AF:

0.000748

AC:

AN:

41424

American (AMR)

AF:

0.00

AC:

AN:

15268

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5180

South Asian (SAS)

AF:

0.00

AC:

AN:

4818

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10588

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000294

AC:

AN:

67986

Other (OTH)

AF:

0.000479

AC:

AN:

2088

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.496

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:

0.0000272

Hom.:

Bravo

AF:

0.000363

ESP6500AA

AF:

0.000908

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000741

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.000119

ClinVar

Significance: Likely benign

Submissions summary: Pathogenic:1Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Hemochromatosis type 4

Pathogenic:1Benign:1

Jan 29, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Sep 17, 2015

GeneReviews

Significance:Pathogenic

Review Status:no assertion criteria provided

Collection Method:literature only

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.084

BayesDel_addAF

Benign

-0.043

BayesDel_noAF

Uncertain

0.10

CADD

Benign

(source)

DANN

Benign

0.97

DEOGEN2

Uncertain

0.53

Eigen

Benign

-0.45

Eigen_PC

Benign

-0.26

FATHMM_MKL

Uncertain

0.92

LIST_S2

Benign

0.75

M_CAP

Uncertain

0.088

MetaRNN

Benign

0.35

MetaSVM

Uncertain

-0.11

MutationAssessor

Benign

1.5

PhyloP100

0.34

PrimateAI

Benign

0.35

PROVEAN

Benign

-1.6

REVEL

Uncertain

0.54

Sift

Uncertain

0.013

Sift4G

Benign

0.16

Polyphen

0.0

Vest4

0.69

MVP

0.98

MPC

0.67

ClinPred

0.032

GERP RS

5.0

Varity_R

0.093

gMVP

0.55

Mutation Taster

=32/68

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

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over