20-3471160-C-T

Position:

chr20-3471160-C-T

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BP4_StrongBS2

The NM_139321.3(ATRN):c.53C>T(p.Ala18Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000232 in 1,505,518 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Synonymous variant affecting the same amino acid position (i.e. A18A) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000024 ( 0 hom. )

Consequence

ATRN
NM_139321.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.0400

Variant links:

Genes affected

ATRN (HGNC:885): (attractin) This gene encodes both membrane-bound and secreted protein isoforms. A membrane-bound isoform exhibits sequence similarity with the mouse mahogany protein, a receptor involved in controlling obesity. A secreted isoform is involved in the initial immune cell clustering during inflammatory responses that may regulate the chemotactic activity of chemokines. [provided by RefSeq, Apr 2016]

ATRN links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.06770006).

BS2

High AC in GnomAdExome4 at 33 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
ATRN	NM_139321.3 linkuse as main transcript	c.53C>T	p.Ala18Val	missense_variant	1/29	ENST00000262919.10
ATRN	NM_001323332.2 linkuse as main transcript	c.53C>T	p.Ala18Val	missense_variant	1/26
ATRN	NM_139322.4 linkuse as main transcript	c.53C>T	p.Ala18Val	missense_variant	1/25
ATRN	NM_001207047.3 linkuse as main transcript	c.62+26C>T		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ATRN	ENST00000262919.10 linkuse as main transcript	c.53C>T	p.Ala18Val	missense_variant	1/29	5	NM_139321.3	P2	O75882-1
ATRN	ENST00000446916.2 linkuse as main transcript	c.53C>T	p.Ala18Val	missense_variant	1/25	1		A2	O75882-2

Frequencies

GnomAD3 genomes

AF:

0.0000132

AC:

AN:

152036

Hom.:

Cov.:

show subpopulations

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:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000389

AC:

AN:

102824

Hom.:

AF XY:

0.0000174

AC XY:

AN XY:

57496

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000467

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000806

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000244

AC:

AN:

1353482

Hom.:

Cov.:

AF XY:

0.0000255

AC XY:

AN XY:

667660

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000301

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:

0.0000281

Gnomad4 OTH exome

AF:

0.0000177

GnomAD4 genome

AF:

0.0000132

AC:

AN:

152036

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74280

show subpopulations

Gnomad4 AFR

AF:

0.00

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:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000142

Hom.:

Bravo

AF:

0.0000113

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Dec 09, 2023

This sequence change replaces alanine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 18 of the ATRN protein (p.Ala18Val). The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This variant has not been reported in the literature in individuals affected with ATRN-related conditions. ClinVar contains an entry for this variant (Variation ID: 1919379). Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Not Available"; PolyPhen-2: "Not Available"; Align-GVGD: "Not Available". The valine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.19

BayesDel_addAF

Benign

-0.31

BayesDel_noAF

Benign

-0.68

CADD

Benign

DANN

Benign

0.85

DEOGEN2

Benign

0.056

T;.

Eigen

Benign

-1.1

Eigen_PC

Benign

-1.1

FATHMM_MKL

Benign

0.11

LIST_S2

Benign

0.49

T;T

M_CAP

Uncertain

0.21

MetaRNN

Benign

0.068

T;T

MetaSVM

Benign

-0.90

MutationAssessor

Benign

0.0

N;N

MutationTaster

Benign

1.0

N;N

PrimateAI

Pathogenic

0.85

PROVEAN

Benign

0.21

N;N

REVEL

Benign

0.019

Sift

Benign

0.56

T;T

Sift4G

Benign

0.78

T;T

Polyphen

0.0

B;B

Vest4

0.16

MutPred

0.28

Loss of helix (P = 0.0444);Loss of helix (P = 0.0444);

MVP

0.17

MPC

0.73

ClinPred

0.024

GERP RS

-0.74

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

2.1

Varity_R

0.051

gMVP

0.28

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

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