NM_019625.4:c.1720G>A

Variant names:

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_019625.4(ABCB9):c.1720G>A(p.Asp574Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000013 in 1,612,192 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000012 ( 1 hom. )

Consequence

ABCB9
NM_019625.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.785

Variant links:

Genes affected

ABCB9 (HGNC:50): (ATP binding cassette subfamily B member 9) The membrane-associated protein encoded by this gene is a member of the superfamily of ATP-binding cassette (ABC) transporters. ABC proteins transport various molecules across extra- and intra-cellular membranes. ABC genes are divided into seven distinct subfamilies (ABC1, MDR/TAP, MRP, ALD, OABP, GCN20, White). This protein is a member of the MDR/TAP subfamily. Members of the MDR/TAP subfamily are involved in multidrug resistance as well as antigen presentation. This family member functions in the translocation of peptides from the cytosol into the lysosomal lumen. Alternative splicing of this gene results in distinct isoforms which are likely to have different substrate specificities. [provided by RefSeq, Jul 2011]

ABCB9 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.24802569).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ABCB9	NM_019625.4 link	c.1720G>A	p.Asp574Asn	missense_variant	Exon 9 of 12	ENST00000280560.13	NP_062571.1	Q9NP78-1A0A024RBU1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ABCB9	ENST00000280560.13 link	c.1720G>A	p.Asp574Asn	missense_variant	Exon 9 of 12	1	NM_019625.4	ENSP00000280560.8		Q9NP78-1

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152224

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:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.000188

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000122

AC:

AN:

245670

Hom.:

AF XY:

0.0000150

AC XY:

AN XY:

133150

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:

0.0000664

Gnomad FIN exome

AF:

0.0000478

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000116

AC:

AN:

1459850

Hom.:

Cov.:

AF XY:

0.0000124

AC XY:

AN XY:

726054

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:

0.0000932

Gnomad4 FIN exome

AF:

0.0000376

Gnomad4 NFE exome

AF:

9.00e-7

Gnomad4 OTH exome

AF:

0.0000497

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152342

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74488

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.000188

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Apr 15, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1720G>A (p.D574N) alteration is located in exon 9 (coding exon 8) of the ABCB9 gene. This alteration results from a G to A substitution at nucleotide position 1720, causing the aspartic acid (D) at amino acid position 574 to be replaced by an asparagine (N). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.092

BayesDel_addAF

Benign

-0.19

BayesDel_noAF

Benign

-0.34

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.72

.;.;D;.;.;D;D;D;D;D

Eigen

Benign

0.077

Eigen_PC

Benign

0.15

FATHMM_MKL

Benign

0.64

LIST_S2

Uncertain

0.90

D;D;.;D;D;.;D;D;D;D

M_CAP

Uncertain

0.13

MetaRNN

Benign

0.25

T;T;T;T;T;T;T;T;T;T

MetaSVM

Uncertain

0.16

MutationAssessor

Benign

0.0050

N;N;N;.;.;N;.;N;.;.

PrimateAI

Uncertain

0.59

PROVEAN

Uncertain

-2.4

N;N;D;D;D;D;D;D;D;D

REVEL

Uncertain

0.30

Sift

Uncertain

0.0060

D;D;D;D;D;D;D;D;T;D

Sift4G

Uncertain

0.041

D;D;T;T;D;T;T;T;.;T

Polyphen

0.79, 0.98

.;.;P;.;D;P;.;P;.;.

Vest4

0.26

MutPred

0.49

Gain of catalytic residue at D574 (P = 0.0103);Gain of catalytic residue at D574 (P = 0.0103);Gain of catalytic residue at D574 (P = 0.0103);.;.;Gain of catalytic residue at D574 (P = 0.0103);Gain of catalytic residue at D574 (P = 0.0103);Gain of catalytic residue at D574 (P = 0.0103);.;.;

MVP

0.96

MPC

0.43

ClinPred

0.59

GERP RS

4.8

Varity_R

0.21

gMVP

0.43

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.090

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