Genetic Variant ASTN2:p.Arg1289His (chr9-116426005-C-T) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001365068.1(ASTN2):c.3866G>A(p.Arg1289His) variant causes a missense change. The variant allele was found at a frequency of 0.0000527 in 1,613,992 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000079 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000050 ( 0 hom. )

Consequence

ASTN2
NM_001365068.1 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.39

Variant links:

Genes affected

ASTN2 (HGNC:17021): (astrotactin 2) This gene encodes a protein that is expressed in the brain and may function in neuronal migration, based on functional studies of the related astrotactin 1 gene in human and mouse. A deletion at this locus has been associated with schizophrenia. Multiple transcript variants encoding different proteins have been found for this locus. [provided by RefSeq, May 2010]

ASTN2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.11311293).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ASTN2	NM_001365068.1 link	c.3866G>A	p.Arg1289His	missense_variant	Exon 23 of 23	ENST00000313400.9	NP_001351997.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ASTN2	ENST00000313400.9 link	c.3866G>A	p.Arg1289His	missense_variant	Exon 23 of 23	5	NM_001365068.1	ENSP00000314038.4		O75129-1

Frequencies

GnomAD3 genomes

AF:

0.0000789

AC:

AN:

152166

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000169

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000878

AC:

AN:

250468

Hom.:

AF XY:

0.0000665

AC XY:

AN XY:

135424

show subpopulations

Gnomad AFR exome

AF:

0.0000615

Gnomad AMR exome

AF:

0.000376

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000544

Gnomad SAS exome

AF:

0.0000653

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000886

Gnomad OTH exome

AF:

0.000653

GnomAD4 exome

AF:

0.0000499

AC:

AN:

1461826

Hom.:

Cov.:

AF XY:

0.0000523

AC XY:

AN XY:

727214

show subpopulations

Gnomad4 AFR exome

AF:

0.0000896

Gnomad4 AMR exome

AF:

0.000492

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.0000580

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000324

Gnomad4 OTH exome

AF:

0.0000662

GnomAD4 genome

AF:

0.0000789

AC:

AN:

152166

Hom.:

Cov.:

AF XY:

0.0000942

AC XY:

AN XY:

74346

show subpopulations

Gnomad4 AFR

AF:

0.000169

Gnomad4 AMR

AF:

0.0000655

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000441

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000772

Hom.:

Bravo

AF:

0.0000945

ESP6500AA

AF:

0.000454

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000906

AC:

EpiCase

AF:

0.000109

EpiControl

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Feb 19, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.3713G>A (p.R1238H) alteration is located in exon 22 (coding exon 22) of the ASTN2 gene. This alteration results from a G to A substitution at nucleotide position 3713, causing the arginine (R) at amino acid position 1238 to be replaced by a histidine (H). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.086

BayesDel_addAF

Benign

-0.18

BayesDel_noAF

Benign

-0.19

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.049

T;.;.;.;.;.

Eigen

Benign

0.092

Eigen_PC

Uncertain

0.29

FATHMM_MKL

Uncertain

0.96

LIST_S2

Uncertain

0.90

D;D;D;D;D;D

M_CAP

Benign

0.010

MetaRNN

Benign

0.11

T;T;T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.0

L;.;.;.;.;.

PrimateAI

Uncertain

0.63

PROVEAN

Benign

-1.9

N;D;D;N;N;D

REVEL

Benign

0.16

Sift

Benign

0.042

D;D;D;D;D;D

Sift4G

Uncertain

0.052

T;D;T;T;T;T

Polyphen

0.066

B;B;B;.;B;B

Vest4

0.46

MVP

0.13

MPC

0.29

ClinPred

0.055

GERP RS

5.9

Varity_R

0.36

gMVP

0.52

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