18-57646472-AT-ATT

Variant names:

• chr18-57646472-A-AT
• rs35833803
• NM_001374385.1:c.*2015dupA

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_001374385.1(ATP8B1):​c.*2015dupA variant causes a 3 prime UTR change. The variant allele was found at a frequency of 0.0000132 in 152,054 control chromosomes in the GnomAD database, including 1 homozygotes. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.000013 (1 hom., cov: 29)
• Consequence: ATP8B1 NM_001374385.1 3_prime_UTR
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 3.89
• Publications: 1 publications found

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

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

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

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ATP8B1	NM_001374385.1	MANE Select	c.*2015dupA		3_prime_UTR	Exon 28 of 28	NP_001361314.1	O43520
	ATP8B1	NM_005603.6		c.*2015dupA		3_prime_UTR	Exon 28 of 28	NP_005594.2	O43520
	ATP8B1	NM_001374386.1		c.*2015dupA		3_prime_UTR	Exon 27 of 27	NP_001361315.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ATP8B1	ENST00000648908.2	MANE Select	c.*2015dupA		3_prime_UTR	Exon 28 of 28	ENSP00000497896.1	O43520
	ATP8B1-AS1	ENST00000592201.2	TSL:1	n.722+4427dupT		intron	N/A
	ATP8B1	ENST00000857621.1		c.*2015dupA		3_prime_UTR	Exon 28 of 28	ENSP00000527680.1

Frequencies

GnomAD3 genomes AF: 0.0000132 AC: 2 AN: 152054 Hom.: 1 Cov.: 29

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000414

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD4 exome Cov.: 0

GnomAD4 genome AF: 0.0000132 AC: 2 AN: 152054 Hom.: 1 Cov.: 29 AF XY: 0.0000269 AC XY: 2 AN XY: 74270

African (AFR) AF: 0.00 AC: 0 AN: 41382

American (AMR) AF: 0.00 AC: 0 AN: 15268

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5200

South Asian (SAS) AF: 0.000414 AC: 2 AN: 4836

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10576

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68000

Other (OTH) AF: 0.00 AC: 0 AN: 2092

Alfa AF: 0.00 Hom.: 99

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		3.9

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

Other links and lift over

dbSNP: rs35833803; hg19: chr18-55313704;