Genetic Variant NM_001374385.1:c.234C>G (chr18-57706535-G-C) – ACMG Classification: Benign (-20 pts)

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_001374385.1(ATP8B1):c.234C>G(p.His78Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00191 in 1,614,062 control chromosomes in the GnomAD database, including 77 homozygotes. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.0020 ( 11 hom., cov: 32)

Exomes 𝑓: 0.0019 ( 66 hom. )

Consequence

ATP8B1
NM_001374385.1 missense

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:8

Conservation

PhyloP100: -2.14

Publications

19 publications found

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:

ATP8B1-AS1 (HGNC:56042): (ATP8B1 antisense RNA 1)

ATP8B1-AS1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0015209615).

BP6

Variant 18-57706535-G-C is Benign according to our data. Variant chr18-57706535-G-C is described in ClinVar as Benign. ClinVar VariationId is 259818.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population eas. GnomAd4 allele frequency = 0.00202 (307/152284) while in subpopulation EAS AF = 0.0447 (232/5190). AF 95% confidence interval is 0.04. There are 11 homozygotes in GnomAd4. There are 179 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 11 AR,Unknown gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001374385.1. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
ATP8B1	NM_001374385.1	MANE Select	c.234C>G	p.His78Gln	missense	Exon 3 of 28	NP_001361314.1	O43520
ATP8B1	NM_005603.6		c.234C>G	p.His78Gln	missense	Exon 3 of 28	NP_005594.2	O43520
ATP8B1	NM_001374386.1		c.130-1867C>G		intron	N/A	NP_001361315.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
ATP8B1	ENST00000648908.2	MANE Select	c.234C>G	p.His78Gln	missense	Exon 3 of 28	ENSP00000497896.1	O43520
ATP8B1	ENST00000857621.1		c.234C>G	p.His78Gln	missense	Exon 3 of 28	ENSP00000527680.1
ATP8B1	ENST00000857625.1		c.234C>G	p.His78Gln	missense	Exon 4 of 29	ENSP00000527684.1

Frequencies

GnomAD3 genomes

AF:

0.00202

AC:

308

AN:

152166

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000145

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000982

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.0448

Gnomad SAS

AF:

0.00809

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00633

Gnomad NFE

AF:

0.000147

Gnomad OTH

AF:

0.00143

GnomAD2 exomes

AF:

0.00437

AC:

1097

AN:

251254

AF XY:

0.00426

show subpopulations

Gnomad AFR exome

AF:

0.000308

Gnomad AMR exome

AF:

0.000434

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0471

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000704

Gnomad OTH exome

AF:

0.00147

GnomAD4 exome

AF:

0.00190

AC:

2772

AN:

1461778

Hom.:

Cov.:

AF XY:

0.00203

AC XY:

1479

AN XY:

727174

show subpopulations

African (AFR)

AF:

0.000239

AC:

AN:

33478

American (AMR)

AF:

0.000403

AC:

AN:

44718

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26132

East Asian (EAS)

AF:

0.0494

AC:

1961

AN:

39678

South Asian (SAS)

AF:

0.00609

AC:

525

AN:

86232

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53414

Middle Eastern (MID)

AF:

0.00225

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000989

AC:

110

AN:

1111968

Other (OTH)

AF:

0.00227

AC:

137

AN:

60390

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.472

Heterozygous variant carriers

143

285

428

570

713

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

114

152

190

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00202

AC:

307

AN:

152284

Hom.:

Cov.:

AF XY:

0.00240

AC XY:

179

AN XY:

74450

show subpopulations

African (AFR)

AF:

0.000144

AC:

AN:

41550

American (AMR)

AF:

0.000981

AC:

AN:

15296

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.0447

AC:

232

AN:

5190

South Asian (SAS)

AF:

0.00830

AC:

AN:

4818

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10606

Middle Eastern (MID)

AF:

0.00680

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000147

AC:

AN:

68032

Other (OTH)

AF:

0.000946

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.496

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000503

Hom.:

Bravo

AF:

0.00187

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.00418

AC:

508

Asia WGS

AF:

0.0300

AC:

105

AN:

3478

EpiCase

AF:

0.000109

EpiControl

AF:

0.0000593

ClinVar

ClinVar submissions

Significance:Benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not specified (4)

not provided (3)

Progressive familial intrahepatic cholestasis type 1 (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.070

BayesDel_addAF

Benign

-0.63

BayesDel_noAF

Benign

-0.63

CADD

Benign

0.0020

(source)

DANN

Benign

0.31

DEOGEN2

Benign

0.045

Eigen

Benign

-2.1

Eigen_PC

Benign

-2.1

FATHMM_MKL

Benign

0.077

LIST_S2

Benign

0.47

MetaRNN

Benign

0.0015

MetaSVM

Benign

-1.0

MutationAssessor

Benign

-0.94

PhyloP100

-2.1

PrimateAI

Benign

0.30

PROVEAN

Benign

-0.060

REVEL

Benign

0.055

Sift

Benign

0.95

Sift4G

Benign

0.87

Polyphen

0.0

Vest4

0.064

MutPred

0.36

Loss of catalytic residue at M80 (P = 0.0957)

MVP

0.35

ClinPred

0.0045

GERP RS

-12

Varity_R

0.031

gMVP

0.14

Mutation Taster

=82/18

polymorphism (auto)

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over