16-16150728-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM1

The NM_001171.6(ABCC6):​c.4253G>A​(p.Arg1418Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000235 in 1,613,736 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★). Synonymous variant affecting the same amino acid position (i.e. R1418R) has been classified as Benign.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 33)
Exomes 𝑓: 0.000025 ( 0 hom. )

Consequence

ABCC6
NM_001171.6 missense

Scores

3
9
7

Clinical Significance

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

Conservation

PhyloP100: 2.65
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]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM1
In a domain ABC transporter 2 (size 234) in uniprot entity MRP6_HUMAN there are 39 pathogenic changes around while only 5 benign (89%) in NM_001171.6

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
ABCC6NM_001171.6 linkuse as main transcriptc.4253G>A p.Arg1418Gln missense_variant 30/31 ENST00000205557.12 NP_001162.5
ABCC6NM_001351800.1 linkuse as main transcriptc.3911G>A p.Arg1304Gln missense_variant 30/31 NP_001338729.1
ABCC6NR_147784.1 linkuse as main transcriptn.3915G>A non_coding_transcript_exon_variant 28/29

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
ABCC6ENST00000205557.12 linkuse as main transcriptc.4253G>A p.Arg1418Gln missense_variant 30/311 NM_001171.6 ENSP00000205557 P1O95255-1
ABCC6ENST00000456970.6 linkuse as main transcriptc.*1262G>A 3_prime_UTR_variant, NMD_transcript_variant 28/292 ENSP00000405002 O95255-3
ABCC6ENST00000622290.5 linkuse as main transcriptc.*425G>A 3_prime_UTR_variant, NMD_transcript_variant 31/325 ENSP00000483331

Frequencies

GnomAD3 genomes
AF:
0.0000131
AC:
2
AN:
152226
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.0000241
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:
0.0000147
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.0000280
AC:
7
AN:
249970
Hom.:
0
AF XY:
0.0000296
AC XY:
4
AN XY:
135344
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.0000290
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.0000654
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000354
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000246
AC:
36
AN:
1461510
Hom.:
0
Cov.:
34
AF XY:
0.0000248
AC XY:
18
AN XY:
727028
show subpopulations
Gnomad4 AFR exome
AF:
0.0000597
Gnomad4 AMR exome
AF:
0.0000224
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.0000232
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.0000261
Gnomad4 OTH exome
AF:
0.0000331
GnomAD4 genome
AF:
0.0000131
AC:
2
AN:
152226
Hom.:
0
Cov.:
33
AF XY:
0.00
AC XY:
0
AN XY:
74364
show subpopulations
Gnomad4 AFR
AF:
0.0000241
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:
0.0000147
Gnomad4 OTH
AF:
0.00
Bravo
AF:
0.0000302
TwinsUK
AF:
0.000270
AC:
1
ALSPAC
AF:
0.00
AC:
0
ExAC
AF:
0.0000247
AC:
3
Asia WGS
AF:
0.000289
AC:
1
AN:
3478
EpiCase
AF:
0.00
EpiControl
AF:
0.0000593

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:3
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not provided Uncertain:2
Uncertain significance, criteria provided, single submitterclinical testingCeGaT Center for Human Genetics TuebingenJan 01, 2018- -
Uncertain significance, criteria provided, single submitterclinical testingLabcorp Genetics (formerly Invitae), LabcorpAug 19, 2022This sequence change replaces arginine, which is basic and polar, with glutamine, which is neutral and polar, at codon 1418 of the ABCC6 protein (p.Arg1418Gln). This variant is present in population databases (rs63751262, gnomAD 0.007%). This variant has not been reported in the literature in individuals affected with ABCC6-related conditions. ClinVar contains an entry for this variant (Variation ID: 433356). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Tolerated"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C0"). Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may create or strengthen a splice site. 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 Uncertain:1
Uncertain significance, no assertion criteria providedresearchPXE InternationalMar 01, 2021- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.081
BayesDel_addAF
Benign
-0.010
T
BayesDel_noAF
Uncertain
-0.070
CADD
Pathogenic
32
DANN
Pathogenic
1.0
DEOGEN2
Uncertain
0.75
D;.
Eigen
Uncertain
0.36
Eigen_PC
Uncertain
0.32
FATHMM_MKL
Uncertain
0.89
D
LIST_S2
Uncertain
0.96
D;D
M_CAP
Pathogenic
0.31
D
MetaRNN
Uncertain
0.71
D;D
MetaSVM
Uncertain
0.60
D
MutationAssessor
Benign
0.74
N;.
MutationTaster
Benign
1.0
D
PrimateAI
Benign
0.46
T
PROVEAN
Uncertain
-2.9
D;.
REVEL
Pathogenic
0.73
Sift
Benign
0.044
D;.
Sift4G
Benign
0.067
T;.
Polyphen
1.0
D;.
Vest4
0.34
MutPred
0.67
Loss of MoRF binding (P = 0.0314);.;
MVP
0.90
MPC
0.41
ClinPred
0.77
D
GERP RS
3.4
Varity_R
0.59
gMVP
0.48

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.42
Details are displayed if max score is > 0.2
DS_AG_spliceai
0.42
Position offset: -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.

Other links and lift over

dbSNP: rs63751262; hg19: chr16-16244585; API