Genetic Variant AMIGO1:p.Arg440Gln (chr1-109507594-C-T) – ACMG Classification: Likely_benign (-6 pts)

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_020703.4(AMIGO1):c.1319G>A(p.Arg440Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000105 in 1,613,956 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 (★).

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000082 ( 0 hom. )

Consequence

AMIGO1
NM_020703.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.57

Variant links:

Genes affected

AMIGO1 (HGNC:20824): (adhesion molecule with Ig like domain 1) Predicted to enable potassium channel regulator activity. Predicted to be involved in several processes, including heterophilic cell-cell adhesion via plasma membrane cell adhesion molecules; homophilic cell adhesion via plasma membrane adhesion molecules; and nervous system development. Predicted to act upstream of or within positive regulation of synapse assembly. Predicted to be located in dendrite and neuronal cell body membrane. Predicted to be integral component of membrane. Predicted to colocalize with voltage-gated potassium channel complex. [provided by Alliance of Genome Resources, Apr 2022]

AMIGO1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -6 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.17795306).

BS2

High AC in GnomAd4 at 5 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
AMIGO1	NM_020703.4 link	c.1319G>A	p.Arg440Gln	missense_variant	Exon 2 of 2	ENST00000369864.5	NP_065754.2	Q86WK6
AMIGO1	XM_011541812.3 link	c.1319G>A	p.Arg440Gln	missense_variant	Exon 2 of 2		XP_011540114.1	Q86WK6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
AMIGO1	ENST00000369864.5 link	c.1319G>A	p.Arg440Gln	missense_variant	Exon 2 of 2	1	NM_020703.4	ENSP00000358880.4		Q86WK6
AMIGO1	ENST00000369862.1 link	c.1319G>A	p.Arg440Gln	missense_variant	Exon 2 of 2	5		ENSP00000358878.1		Q86WK6

Frequencies

GnomAD3 genomes

AF:

0.0000329

AC:

AN:

152116

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000724

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000386

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

GnomAD3 exomes

AF:

0.0000239

AC:

AN:

251348

Hom.:

AF XY:

0.00000736

AC XY:

AN XY:

135876

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000163

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000176

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000821

AC:

AN:

1461840

Hom.:

Cov.:

AF XY:

0.00000413

AC XY:

AN XY:

727222

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000101

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000540

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000329

AC:

AN:

152116

Hom.:

Cov.:

AF XY:

0.0000404

AC XY:

AN XY:

74310

show subpopulations

Gnomad4 AFR

AF:

0.0000724

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000386

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000712

Hom.:

Bravo

AF:

0.0000378

ExAC

AF:

0.0000330

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Nov 08, 2021

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1319G>A (p.R440Q) alteration is located in exon 2 (coding exon 1) of the AMIGO1 gene. This alteration results from a G to A substitution at nucleotide position 1319, causing the arginine (R) at amino acid position 440 to be replaced by a glutamine (Q). 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

0.33

BayesDel_addAF

Benign

-0.25

BayesDel_noAF

Benign

-0.34

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.057

T;T

Eigen

Uncertain

0.34

Eigen_PC

Uncertain

0.44

FATHMM_MKL

Benign

0.63

LIST_S2

Benign

0.85

.;T

M_CAP

Benign

0.0045

MetaRNN

Benign

0.18

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.5

L;L

PrimateAI

Benign

0.43

PROVEAN

Benign

-1.1

N;N

REVEL

Benign

0.14

Sift

Uncertain

0.023

D;D

Sift4G

Benign

0.13

T;T

Polyphen

0.96

D;D

Vest4

0.32

MutPred

0.47

Gain of sheet (P = 0.0043);Gain of sheet (P = 0.0043);

MVP

0.52

MPC

1.7

ClinPred

0.25

GERP RS

6.2

Varity_R

0.11

gMVP

0.095

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