3-49718696-G-A

Position:

chr3-49718696-G-A

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_198722.3(AMIGO3):c.770C>T(p.Pro257Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000446 in 1,612,976 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00021 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000027 ( 0 hom. )

Consequence

AMIGO3
NM_198722.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.57

Variant links:

Genes affected

AMIGO3 (HGNC:24075): (adhesion molecule with Ig like domain 3) Predicted to be involved in brain development and heterophilic cell-cell adhesion via plasma membrane cell adhesion molecules. Predicted to act upstream of or within positive regulation of synapse assembly. Predicted to be integral component of membrane. [provided by Alliance of Genome Resources, Apr 2022]

AMIGO3 links:

RNF123 (HGNC:21148): (ring finger protein 123) The protein encoded by this gene contains a C-terminal RING finger domain, a motif present in a variety of functionally distinct proteins and known to be involved in protein-protein and protein-DNA interactions, and an N-terminal SPRY domain. This protein displays E3 ubiquitin ligase activity toward the cyclin-dependent kinase inhibitor 1B which is also known as p27 or KIP1. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Feb 2016]

RNF123 links:

GMPPB (HGNC:22932): (GDP-mannose pyrophosphorylase B) This gene is thought to encode a GDP-mannose pyrophosphorylase. The encoded protein catalyzes the conversion of mannose-1-phosphate and GTP to GDP-mannose, a reaction involved in the production of N-linked oligosaccharides. Alternatively spliced transcript variants encoding distinct isoforms have been described. [provided by RefSeq, Jan 2009]

GMPPB links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.009111017).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
AMIGO3	NM_198722.3 linkuse as main transcript	c.770C>T	p.Pro257Leu	missense_variant	1/1	ENST00000320431.8	NP_942015.1
RNF123	NM_022064.5 linkuse as main transcript	c.3501-1815G>A		intron_variant		ENST00000327697.11	NP_071347.2
RNF123	NR_135218.2 linkuse as main transcript	n.3827-1815G>A		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
AMIGO3	ENST00000320431.8 linkuse as main transcript	c.770C>T	p.Pro257Leu	missense_variant	1/1		NM_198722.3	ENSP00000323096	P1
RNF123	ENST00000327697.11 linkuse as main transcript	c.3501-1815G>A		intron_variant		1	NM_022064.5	ENSP00000328287	P1	Q5XPI4-1

Frequencies

GnomAD3 genomes

AF:

0.000217

AC:

AN:

152278

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000723

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

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:

0.000478

GnomAD3 exomes

AF:

0.000101

AC:

AN:

248280

Hom.:

AF XY:

0.0000592

AC XY:

AN XY:

135108

show subpopulations

Gnomad AFR exome

AF:

0.00141

Gnomad AMR exome

AF:

0.0000290

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:

0.0000179

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000274

AC:

AN:

1460580

Hom.:

Cov.:

AF XY:

0.0000206

AC XY:

AN XY:

726610

show subpopulations

Gnomad4 AFR exome

AF:

0.000836

Gnomad4 AMR exome

AF:

0.0000224

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:

0.00000720

Gnomad4 OTH exome

AF:

0.0000497

GnomAD4 genome

AF:

0.000210

AC:

AN:

152396

Hom.:

Cov.:

AF XY:

0.000174

AC XY:

AN XY:

74532

show subpopulations

Gnomad4 AFR

AF:

0.000697

Gnomad4 AMR

AF:

0.000131

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:

0.000473

Alfa

AF:

0.0000616

Hom.:

Bravo

AF:

0.000321

ESP6500AA

AF:

0.00114

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000132

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

May 15, 2023

The c.770C>T (p.P257L) alteration is located in exon 1 (coding exon 1) of the AMIGO3 gene. This alteration results from a C to T substitution at nucleotide position 770, causing the proline (P) at amino acid position 257 to be replaced by a leucine (L). 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

0.12

BayesDel_addAF

Benign

-0.49

BayesDel_noAF

Benign

-0.52

CADD

Benign

DANN

Benign

0.95

DEOGEN2

Benign

0.13

Eigen

Benign

-0.62

Eigen_PC

Benign

-0.55

FATHMM_MKL

Benign

0.43

LIST_S2

Benign

0.53

M_CAP

Benign

0.019

MetaRNN

Benign

0.0091

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.6

MutationTaster

Benign

1.0

D;D;D;N;N

PrimateAI

Benign

0.43

PROVEAN

Uncertain

-2.9

REVEL

Benign

0.099

Sift

Benign

0.34

Sift4G

Benign

0.099

Polyphen

0.0040

Vest4

0.12

MVP

0.89

ClinPred

0.019

GERP RS

4.5

Varity_R

0.082

gMVP

0.73

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