2-168970146-C-T

Position:

chr2-168970146-C-T

Variant summary

Our verdict is Pathogenic. Variant got 16 ACMG points: 16P and 0B. PM2PM5PP3_StrongPP5_Very_Strong

The NM_003742.4(ABCB11):c.1708G>A(p.Ala570Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000682 in 1,612,798 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 Likely pathogenic (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A570S) has been classified as Likely pathogenic.

Frequency

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

Exomes 𝑓: 0.0000048 ( 0 hom. )

Consequence

ABCB11
NM_003742.4 missense

Scores

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:6

Conservation

PhyloP100: 7.91

Variant links:

Genes affected

ABCB11 (HGNC:42): (ATP binding cassette subfamily B member 11) 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. The protein encoded by this gene is the major canalicular bile salt export pump in man. Mutations in this gene cause a form of progressive familial intrahepatic cholestases which are a group of inherited disorders with severe cholestatic liver disease from early infancy. [provided by RefSeq, Jul 2008]

ABCB11 links:

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ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 16 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PM5

Other missense variant is known to change same aminoacid residue: Variant chr2-168970145-G-A is described in ClinVar as [Likely_pathogenic]. Clinvar id is 2680875.Status of the report is criteria_provided_single_submitter, 1 stars.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.988

PP5

Variant 2-168970146-C-T is Pathogenic according to our data. Variant chr2-168970146-C-T is described in ClinVar as [Likely_pathogenic]. Clinvar id is 288100.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ABCB11	NM_003742.4 linkuse as main transcript	c.1708G>A	p.Ala570Thr	missense_variant	15/28	ENST00000650372.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris
ABCB11	ENST00000650372.1 linkuse as main transcript	c.1708G>A	p.Ala570Thr	missense_variant	15/28		NM_003742.4	P1
ABCB11	ENST00000649448.1 linkuse as main transcript	c.25G>A	p.Ala9Thr	missense_variant	1/15
ABCB11	ENST00000478354.1 linkuse as main transcript	n.446G>A		non_coding_transcript_exon_variant	1/2	4
ABCB11	ENST00000439188.1 linkuse as main transcript	c.*178G>A		3_prime_UTR_variant, NMD_transcript_variant	2/15	2

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152002

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000262

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:

0.00000403

AC:

AN:

248406

Hom.:

AF XY:

0.00000742

AC XY:

AN XY:

134770

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:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000889

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000479

AC:

AN:

1460796

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726714

show subpopulations

Gnomad4 AFR exome

AF:

0.0000898

Gnomad4 AMR exome

AF:

0.0000672

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:

9.00e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152002

Hom.:

Cov.:

AF XY:

0.0000404

AC XY:

AN XY:

74252

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000262

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

Alfa

AF:

0.0000712

Hom.:

Bravo

AF:

0.0000831

EpiCase

AF:

0.0000546

EpiControl

AF:

0.00

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:6

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Pathogenic:3

Pathogenic, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Dec 29, 2023	This sequence change replaces alanine, which is neutral and non-polar, with threonine, which is neutral and polar, at codon 570 of the ABCB11 protein (p.Ala570Thr). The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This missense change has been observed in individuals with ABCB11-related conditions (PMID: 15300568, 18395098, 26678486). ClinVar contains an entry for this variant (Variation ID: 288100). 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 expected to disrupt ABCB11 protein function with a positive predictive value of 95%. Experimental studies have shown that this missense change affects ABCB11 function (PMID: 17855769, 17947449, 19101985). This variant disrupts the p.Ala570 amino acid residue in ABCB11. Other variant(s) that disrupt this residue have been observed in individuals with ABCB11-related conditions (PMID: 26678486), which suggests that this may be a clinically significant amino acid residue. For these reasons, this variant has been classified as Pathogenic. -
Pathogenic, criteria provided, single submitter	clinical testing	Revvity Omics, Revvity	Aug 09, 2021	- -
Likely pathogenic, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Dec 18, 2017	- -

Progressive familial intrahepatic cholestasis type 2

Pathogenic:2

Pathogenic, no assertion criteria provided	research	Genomics And Bioinformatics Analysis Resource, Columbia University	-	- -
Pathogenic, no assertion criteria provided	clinical testing	Natera, Inc.	Mar 26, 2021	- -

Benign recurrent intrahepatic cholestasis type 2

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Baylor Genetics

Feb 17, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.50

BayesDel_addAF

Pathogenic

0.54

BayesDel_noAF

Pathogenic

0.54

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Pathogenic

0.97

D;D;.

Eigen

Pathogenic

0.84

Eigen_PC

Pathogenic

0.78

FATHMM_MKL

Uncertain

0.97

LIST_S2

Benign

0.81

.;T;D

M_CAP

Pathogenic

0.50

MetaRNN

Pathogenic

0.99

D;D;D

MetaSVM

Pathogenic

1.1

MutationAssessor

Pathogenic

3.5

M;M;.

MutationTaster

Benign

1.0

PrimateAI

Uncertain

0.70

PROVEAN

Uncertain

-3.6

D;.;.

REVEL

Pathogenic

0.94

Sift

Pathogenic

0.0

D;.;.

Sift4G

Pathogenic

0.0

D;.;.

Polyphen

1.0

D;D;.

Vest4

0.98

MutPred

0.97

Loss of methylation at R571 (P = 0.1569);Loss of methylation at R571 (P = 0.1569);.;

MVP

0.97

MPC

0.62

ClinPred

1.0

GERP RS

5.3

Varity_R

0.88

gMVP

0.88

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