Variant summary

Our verdict is Pathogenic. The variant received 16 ACMG points: 16P and 0B. PM1PM2PP3_StrongPP5_Very_Strong

The NM_001374385.1(ATP8B1):c.1367C>T(p.Thr456Met) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000342 in 1,461,882 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 14/22 in silico tools predict a damaging outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★). Synonymous variant affecting the same amino acid position (i.e. T456T) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000034 ( 0 hom. )

Consequence

ATP8B1
NM_001374385.1 missense

Scores

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:3

Conservation

PhyloP100: 10.0

Publications

15 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:

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ACMG classification

Classification was made for transcript

Our verdict: Pathogenic. The variant received 16 ACMG points.

PM1

In a binding_site (size 0) in uniprot entity AT8B1_HUMAN

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.97

PP5

Variant 18-57688361-G-A is Pathogenic according to our data. Variant chr18-57688361-G-A is described in ClinVar as Pathogenic/Likely_pathogenic. ClinVar VariationId is 7273.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

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
ATP8B1	NM_001374385.1	MANE Select	c.1367C>T	p.Thr456Met	missense	Exon 13 of 28	NP_001361314.1
ATP8B1	NM_005603.6		c.1367C>T	p.Thr456Met	missense	Exon 13 of 28	NP_005594.2
ATP8B1	NM_001374386.1		c.1217C>T	p.Thr406Met	missense	Exon 12 of 27	NP_001361315.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
ATP8B1	ENST00000648908.2	MANE Select	c.1367C>T	p.Thr456Met	missense	Exon 13 of 28	ENSP00000497896.1
ATP8B1	ENST00000588255.1	TSL:3	n.308C>T		non_coding_transcript_exon	Exon 1 of 3
ATP8B1	ENST00000642462.1		n.1367C>T		non_coding_transcript_exon	Exon 13 of 29	ENSP00000494712.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000342

AC:

AN:

1461882

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

727242

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33478

American (AMR)

AF:

0.0000447

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.0000374

AC:

AN:

53420

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1112004

Other (OTH)

AF:

0.00

AC:

AN:

60394

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.435

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

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

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

ClinVar

ClinVar submissions as Germline

Significance:Pathogenic/Likely pathogenic

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

Progressive familial intrahepatic cholestasis type 1 (2)

not provided (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.99

BayesDel_addAF

Pathogenic

0.46

BayesDel_noAF

Pathogenic

0.43

CADD

Pathogenic

(source)

DANN

Pathogenic

1.0

DEOGEN2

Pathogenic

0.81

Eigen

Pathogenic

1.1

Eigen_PC

Pathogenic

1.1

FATHMM_MKL

Uncertain

0.86

LIST_S2

Pathogenic

1.0

M_CAP

Pathogenic

0.29

MetaRNN

Pathogenic

0.97

MetaSVM

Uncertain

0.69

MutationAssessor

Pathogenic

4.3

PhyloP100

PrimateAI

Pathogenic

0.87

PROVEAN

Pathogenic

-5.8

REVEL

Pathogenic

0.83

Sift

Pathogenic

0.0

Sift4G

Pathogenic

0.0

Polyphen

1.0

Vest4

0.99

MutPred

0.86

Loss of methylation at K455 (P = 0.0444)

MVP

0.96

ClinPred

1.0

GERP RS

5.9

Varity_R

0.73

gMVP

0.95

Mutation Taster

=6/94

disease causing (ClinVar)

(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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rs121909104

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

ClinVar submissions as Germline

Computational scores

Splicing

Publications

Other links and lift over