chr18-57674924-T-C

Position:

chr18-57674924-T-C

Variant summary

Our verdict is Benign. Variant got -19 ACMG points: 1P and 20B. PP2BP4_StrongBP6_Very_StrongBS1BS2

The NM_001374385.1(ATP8B1):c.1729A>G(p.Ile577Val) variant causes a missense change. The variant allele was found at a frequency of 0.00202 in 1,614,232 control chromosomes in the GnomAD database, including 80 homozygotes. In-silico tool predicts a benign outcome for this variant. 13/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.0021 ( 10 hom., cov: 32)

Exomes 𝑓: 0.0020 ( 70 hom. )

Consequence

ATP8B1
NM_001374385.1 missense

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:7

Conservation

PhyloP100: 5.16

Variant links:

Genes affected

ATP8B1 (HGNC:3706): (ATPase phospholipid transporting 8B1) This gene encodes a member of the P-type cation transport ATPase family, which belongs to the subfamily of aminophospholipid-transporting ATPases. The aminophospholipid translocases transport phosphatidylserine and phosphatidylethanolamine from one side of a bilayer to another. Mutations in this gene may result in progressive familial intrahepatic cholestasis type 1 and in benign recurrent intrahepatic cholestasis. [provided by RefSeq, Jul 2008]

ATP8B1 links:

(HGNC:):

links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -19 ACMG points.

PP2

Missense variant in gene, where missense usually causes diseases (based on misZ statistic), ATP8B1. . Trascript score misZ 3.3227 (greater than threshold 3.09). GenCC has associacion of gene with progressive familial intrahepatic cholestasis type 1, cholestasis, intrahepatic, of pregnancy, 1.

BP4

Computational evidence support a benign effect (MetaRNN=0.013537943).

BP6

Variant 18-57674924-T-C is Benign according to our data. Variant chr18-57674924-T-C is described in ClinVar as [Benign]. Clinvar id is 259816.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr18-57674924-T-C is described in Lovd as [Likely_benign].

BS1

Variant frequency is greater than expected in population eas. gnomad4 allele frequency = 0.00211 (322/152344) while in subpopulation EAS AF= 0.0482 (250/5186). AF 95% confidence interval is 0.0433. There are 10 homozygotes in gnomad4. There are 191 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

BS2

High Homozygotes in GnomAd4 at 10 AD,AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ATP8B1	NM_001374385.1 linkuse as main transcript	c.1729A>G	p.Ile577Val	missense_variant	16/28	ENST00000648908.2	NP_001361314.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ATP8B1	ENST00000648908.2 linkuse as main transcript	c.1729A>G	p.Ile577Val	missense_variant	16/28		NM_001374385.1	ENSP00000497896	P1
	ENST00000588925.5 linkuse as main transcript	n.570+32872T>C		intron_variant, non_coding_transcript_variant		2

Frequencies

GnomAD3 genomes

AF:

0.00212

AC:

323

AN:

152226

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000121

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000916

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.0483

Gnomad SAS

AF:

0.00827

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00633

Gnomad NFE

AF:

0.000118

Gnomad OTH

AF:

0.00143

GnomAD3 exomes

AF:

0.00484

AC:

1216

AN:

251482

Hom.:

AF XY:

0.00483

AC XY:

657

AN XY:

135918

show subpopulations

Gnomad AFR exome

AF:

0.000308

Gnomad AMR exome

AF:

0.000376

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0507

Gnomad SAS exome

AF:

0.00807

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000703

Gnomad OTH exome

AF:

0.00179

GnomAD4 exome

AF:

0.00200

AC:

2931

AN:

1461888

Hom.:

Cov.:

AF XY:

0.00218

AC XY:

1588

AN XY:

727246

show subpopulations

Gnomad4 AFR exome

AF:

0.000179

Gnomad4 AMR exome

AF:

0.000358

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0504

Gnomad4 SAS exome

AF:

0.00754

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000944

Gnomad4 OTH exome

AF:

0.00233

GnomAD4 genome

AF:

0.00211

AC:

322

AN:

152344

Hom.:

Cov.:

AF XY:

0.00256

AC XY:

191

AN XY:

74502

show subpopulations

Gnomad4 AFR

AF:

0.000120

Gnomad4 AMR

AF:

0.000915

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.0482

Gnomad4 SAS

AF:

0.00849

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000118

Gnomad4 OTH

AF:

0.000946

Alfa

AF:

0.000373

Hom.:

Bravo

AF:

0.00204

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.00470

AC:

570

Asia WGS

AF:

0.0300

AC:

106

AN:

3478

EpiCase

AF:

0.000109

EpiControl

AF:

0.0000593

ClinVar

Significance: Benign

Submissions summary: Benign:7

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:4

Benign, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Oct 05, 2015	- -
Benign, criteria provided, single submitter	clinical testing	PreventionGenetics, part of Exact Sciences	-	- -
Benign, criteria provided, single submitter	clinical testing	Al Jalila Children’s Genomics Center, Al Jalila Childrens Speciality Hospital	Jan 08, 2020	- -
Benign, criteria provided, single submitter	clinical testing	GeneDx	Jan 06, 2017	This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

not provided

Benign:2

Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Feb 01, 2024	- -
Benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -

Progressive familial intrahepatic cholestasis type 1

Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.076

BayesDel_addAF

Benign

-0.44

BayesDel_noAF

Benign

-0.37

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.14

T;T

Eigen

Benign

-0.039

Eigen_PC

Benign

-0.028

FATHMM_MKL

Uncertain

0.88

LIST_S2

Benign

0.73

.;T

MetaRNN

Benign

0.014

T;T

MetaSVM

Benign

-0.83

MutationAssessor

Benign

1.1

L;L

MutationTaster

Benign

2.7e-7

P;P

PrimateAI

Benign

0.45

PROVEAN

Benign

-0.77

N;.

REVEL

Benign

0.26

Sift

Benign

0.20

T;.

Sift4G

Benign

0.28

T;.

Polyphen

0.95

P;P

Vest4

0.22

MVP

0.69

ClinPred

0.044

GERP RS

4.5

Varity_R

0.080

gMVP

0.47

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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