16-57248625-AC-A

Position:

chr16-57248625-AC-A

Variant summary

Our verdict is Pathogenic. Variant got 12 ACMG points: 12P and 0B. PVS1PM2PP5_Moderate

The ENST00000219204.8(ARL2BP):c.191del(p.Pro64LeufsTer10) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000253 in 1,583,880 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Pathogenic (★). Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

ARL2BP
ENST00000219204.8 frameshift

Scores

Not classified

Clinical Significance

Pathogenic criteria provided, single submitter P:1

Conservation

PhyloP100: 1.09

Variant links:

Genes affected

ARL2BP (HGNC:17146): (ADP ribosylation factor like GTPase 2 binding protein) ADP-ribosylation factor (ARF)-like proteins (ARLs) comprise a functionally distinct group of the ARF family of RAS-related GTPases. The protein encoded by this gene binds to ARL2.GTP with high affinity but does not interact with ARL2.GDP, activated ARF, or RHO proteins. The lack of detectable membrane association of this protein or ARL2 upon activation of ARL2 is suggestive of actions distinct from those of the ARFs. This protein is considered to be the first ARL2-specific effector identified, due to its interaction with ARL2.GTP but lack of ARL2 GTPase-activating protein activity. [provided by RefSeq, Jul 2008]

ARL2BP links:

LOC124903697 (HGNC:):

LOC124903697 links:

PLLP (HGNC:18553): (plasmolipin) Predicted to be a structural constituent of myelin sheath. Predicted to be involved in myelination. Predicted to be located in compact myelin and membrane raft. Predicted to be integral component of membrane. Biomarker of schizophrenia. [provided by Alliance of Genome Resources, Apr 2022]

PLLP links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 12 ACMG points.

PVS1

Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.

PM2

Very rare variant in population databases, with high coverage;

PP5

Variant 16-57248625-AC-A is Pathogenic according to our data. Variant chr16-57248625-AC-A is described in ClinVar as [Pathogenic]. Clinvar id is 1928800.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
ARL2BP	NM_012106.4 linkuse as main transcript	c.191del	p.Pro64LeufsTer10	frameshift_variant	3/6	ENST00000219204.8	NP_036238.1
LOC124903697	XR_007065082.1 linkuse as main transcript	n.1435del		non_coding_transcript_exon_variant	2/2
ARL2BP	XM_047433883.1 linkuse as main transcript	c.95del	p.Pro32LeufsTer10	frameshift_variant	3/6		XP_047289839.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ARL2BP	ENST00000219204.8 linkuse as main transcript	c.191del	p.Pro64LeufsTer10	frameshift_variant	3/6	1	NM_012106.4	ENSP00000219204	P1	Q9Y2Y0-1
ARL2BP	ENST00000563234.1 linkuse as main transcript	c.183del	p.Pro62LeufsTer10	frameshift_variant	3/6	2		ENSP00000454237
ARL2BP	ENST00000562023.5 linkuse as main transcript	c.101-1153del		intron_variant		3		ENSP00000457465
PLLP	ENST00000564376.1 linkuse as main transcript	n.321del		splice_region_variant, non_coding_transcript_exon_variant	2/2	3

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152186

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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

GnomAD4 exome

AF:

0.00000210

AC:

AN:

1431694

Hom.:

Cov.:

AF XY:

0.00000281

AC XY:

AN XY:

712188

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000486

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:

9.13e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152186

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74346

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

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

Bravo

AF:

0.0000113

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jul 11, 2022

For these reasons, this variant has been classified as Pathogenic. This variant has not been reported in the literature in individuals affected with ARL2BP-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change creates a premature translational stop signal (p.Pro64Leufs*10) in the ARL2BP gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in ARL2BP are known to be pathogenic (PMID: 23849777, 27790702, 29718757, 30210231). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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