16-16190308-G-T

Position:

chr16-16190308-G-T

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM1PP3_Strong

The NM_001171.6(ABCC6):c.1491C>A(p.Asn497Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000372 in 1,614,056 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 31)

Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

ABCC6
NM_001171.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:3

Conservation

PhyloP100: 0.0200

Variant links:

Genes affected

ABCC6 (HGNC:57): (ATP binding cassette subfamily C member 6) The 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). The encoded protein, a member of the MRP subfamily, is involved in multi-drug resistance. Mutations in this gene cause pseudoxanthoma elasticum. Alternatively spliced transcript variants that encode different proteins have been described for this gene. [provided by RefSeq, Jul 2008]

ABCC6 links:

ABCC6 (HGNC:):

ABCC6 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

PM1

In a domain ABC transmembrane type-1 1 (size 282) in uniprot entity MRP6_HUMAN there are 31 pathogenic changes around while only 9 benign (78%) in NM_001171.6

PP3

MetaRNN computational evidence supports a deleterious effect, 0.954

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
ABCC6	NM_001171.6 linkuse as main transcript	c.1491C>A	p.Asn497Lys	missense_variant	12/31	ENST00000205557.12	NP_001162.5
ABCC6	NM_001351800.1 linkuse as main transcript	c.1149C>A	p.Asn383Lys	missense_variant	12/31		NP_001338729.1
ABCC6	NR_147784.1 linkuse as main transcript	n.1528C>A		non_coding_transcript_exon_variant	12/29

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
ABCC6	ENST00000205557.12 linkuse as main transcript	c.1491C>A	p.Asn497Lys	missense_variant	12/31	1	NM_001171.6	ENSP00000205557.7	O95255-1
ABCC6	ENST00000456970.6 linkuse as main transcript	n.1491C>A		non_coding_transcript_exon_variant	12/29	2		ENSP00000405002.2	O95255-3
ABCC6	ENST00000622290.5 linkuse as main transcript	n.1491C>A		non_coding_transcript_exon_variant	12/32	5		ENSP00000483331.2	A0A8C8Q0G8

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152172

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000724

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000795

AC:

AN:

251418

Hom.:

AF XY:

0.00000736

AC XY:

AN XY:

135884

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000578

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000205

AC:

AN:

1461884

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

727238

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000447

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:

8.99e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152172

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74320

show subpopulations

Gnomad4 AFR

AF:

0.0000724

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000756

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Autosomal recessive inherited pseudoxanthoma elasticum

Uncertain:1

Uncertain significance, no assertion criteria provided

research

PXE International

Mar 01, 2021

- -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jul 12, 2022

This sequence change replaces asparagine, which is neutral and polar, with lysine, which is basic and polar, at codon 497 of the ABCC6 protein (p.Asn497Lys). This variant is present in population databases (rs72653770, gnomAD 0.006%). This missense change has been observed in individual(s) with clinical features of ABCC6-related conditions (PMID: 11536079, 16835894). This variant is also known as 1489C>A. ClinVar contains an entry for this variant (Variation ID: 433234). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt ABCC6 protein function. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Autosomal recessive inherited pseudoxanthoma elasticum;C1867450:Pseudoxanthoma elasticum, forme fruste;C3276161:Arterial calcification, generalized, of infancy, 2

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

Mar 14, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.29

BayesDel_addAF

Benign

-0.13

BayesDel_noAF

Benign

-0.24

CADD

Benign

DANN

Benign

0.97

DEOGEN2

Uncertain

0.57

D;.

Eigen

Benign

-0.71

Eigen_PC

Benign

-0.91

FATHMM_MKL

Benign

0.13

LIST_S2

Benign

0.65

T;T

M_CAP

Uncertain

0.12

MetaRNN

Pathogenic

0.95

D;D

MetaSVM

Uncertain

0.045

MutationAssessor

Pathogenic

3.1

M;M

PrimateAI

Benign

0.35

PROVEAN

Uncertain

-2.7

D;.

REVEL

Uncertain

0.43

Sift

Uncertain

0.0030

D;.

Sift4G

Uncertain

0.0050

D;D

Polyphen

0.60

P;.

Vest4

0.78

MutPred

0.90

Gain of methylation at N497 (P = 0.0367);Gain of methylation at N497 (P = 0.0367);

MVP

0.79

MPC

0.11

ClinPred

0.58

GERP RS

-1.7

Varity_R

0.27

gMVP

0.69

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

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