Genetic Variant MAVS:p.Ile476Met (chr20-3865952-C-G) – ACMG Classification: Benign (-8 pts)

Variant summary

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

The NM_020746.5(MAVS):c.1428C>G(p.Ile476Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000397 in 1,613,678 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000042 ( 0 hom. )

Consequence

MAVS
NM_020746.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -1.31

Variant links:

Genes affected

MAVS (HGNC:29233): (mitochondrial antiviral signaling protein) This gene encodes an intermediary protein necessary in the virus-triggered beta interferon signaling pathways. It is required for activation of transcription factors which regulate expression of beta interferon and contributes to antiviral innate immunity. [provided by RefSeq, Jul 2020]

MAVS 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=0.010701954).

BS2

High AC in GnomAdExome4 at 61 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MAVS	NM_020746.5 link	c.1428C>G	p.Ile476Met	missense_variant	Exon 7 of 7	ENST00000428216.4	NP_065797.2	Q7Z434-1
MAVS	NM_001206491.2 link	c.1005C>G	p.Ile335Met	missense_variant	Exon 6 of 6		NP_001193420.1	Q7Z434-4
MAVS	NM_001385663.1 link	c.1005C>G	p.Ile335Met	missense_variant	Exon 8 of 8		NP_001372592.1
MAVS	NR_037921.2 link	n.1392C>G		non_coding_transcript_exon_variant	Exon 6 of 6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MAVS	ENST00000428216.4 link	c.1428C>G	p.Ile476Met	missense_variant	Exon 7 of 7	1	NM_020746.5	ENSP00000401980.2		Q7Z434-1
MAVS	ENST00000416600.6 link	c.1005C>G	p.Ile335Met	missense_variant	Exon 6 of 6	1		ENSP00000413749.2		Q7Z434-4

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152216

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:

0.000577

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:

0.0000798

AC:

AN:

250528

Hom.:

AF XY:

0.0000369

AC XY:

AN XY:

135640

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00109

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000417

AC:

AN:

1461344

Hom.:

Cov.:

AF XY:

0.0000303

AC XY:

AN XY:

726954

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00144

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152334

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74492

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000578

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000113

ExAC

AF:

0.000132

AC:

Asia WGS

AF:

0.000577

AC:

AN:

3478

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jun 28, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1428C>G (p.I476M) alteration is located in exon 7 (coding exon 6) of the MAVS gene. This alteration results from a C to G substitution at nucleotide position 1428, causing the isoleucine (I) at amino acid position 476 to be replaced by a methionine (M). 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

0.11

BayesDel_addAF

Benign

-0.59

BayesDel_noAF

Benign

-0.66

CADD

Benign

1.3

DANN

Benign

0.97

DEOGEN2

Benign

0.065

.;T

Eigen

Benign

-1.1

Eigen_PC

Benign

-1.4

FATHMM_MKL

Benign

0.061

LIST_S2

Benign

0.67

T;T

M_CAP

Benign

0.015

MetaRNN

Benign

0.011

T;T

MetaSVM

Benign

-0.89

MutationAssessor

Benign

1.1

.;L

PrimateAI

Benign

0.25

PROVEAN

Benign

-0.69

N;N

REVEL

Benign

0.11

Sift

Benign

0.088

T;T

Sift4G

Benign

0.093

T;T

Polyphen

0.92

.;P

Vest4

0.11

MVP

0.30

MPC

0.43

ClinPred

0.054

GERP RS

-8.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.042

gMVP

0.11

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