20-3857807-C-G

Variant names:

• chr20-3857807-C-G
• rs367892824
• NM_020746.5:c.290C>G

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BP4 BS2

The NM_020746.5(MAVS):​c.290C>G​(p.Pro97Arg) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000805 in 1,614,080 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/24 in silico tools predict a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P97L) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 32)
  • Exomes 𝑓: 0.0000082 (0 hom.)
• Consequence: MAVS NM_020746.5 missense, splice_region
• Scores: Splicing: ADA: 0.2709
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.0310
• Publications: 0 publications found

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]

ACMG classification

Our verdict: Likely_benign. The variant received -5 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.3534053).
• BS2: High AC in GnomAdExome4 at 12 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_020746.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MAVS	NM_020746.5	MANE Select	c.290C>G	p.Pro97Arg	missense splice_region	Exon 3 of 7	NP_065797.2	Q7Z434-1
	MAVS	NM_001385663.1		c.-258C>G		splice_region	Exon 3 of 8	NP_001372592.1	Q7Z434-4
	MAVS	NM_001385663.1		c.-258C>G		5_prime_UTR	Exon 3 of 8	NP_001372592.1	Q7Z434-4

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MAVS	ENST00000428216.4	TSL:1 MANE Select	c.290C>G	p.Pro97Arg	missense splice_region	Exon 3 of 7	ENSP00000401980.2	Q7Z434-1
	MAVS	ENST00000416600.6	TSL:1	c.-132+3066C>G		intron	N/A	ENSP00000413749.2	Q7Z434-4
	MAVS	ENST00000883971.1		c.290C>G	p.Pro97Arg	missense splice_region	Exon 2 of 6	ENSP00000554030.1

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152224 Hom.: 0 Cov.: 32

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: 0.0000147

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.00000821 AC: 12 AN: 1461856 Hom.: 0 Cov.: 33 AF XY: 0.00000825 AC XY: 6 AN XY: 727230

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39696

South Asian (SAS) AF: 0.00 AC: 0 AN: 86256

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53406

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00000899 AC: 10 AN: 1111994

Other (OTH) AF: 0.0000331 AC: 2 AN: 60396

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152224 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 74366

African (AFR) AF: 0.00 AC: 0 AN: 41458

American (AMR) AF: 0.00 AC: 0 AN: 15278

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5202

South Asian (SAS) AF: 0.00 AC: 0 AN: 4830

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10620

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 68042

Other (OTH) AF: 0.00 AC: 0 AN: 2094

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.18
BayesDel_addAF	Benign	-0.15	T
BayesDel_noAF	Benign	-0.46
CADD	Benign	19
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.52	D
Eigen	Benign	0.15
Eigen_PC	Benign	0.030
FATHMM_MKL	Benign	0.23	N
LIST_S2	Benign	0.50	T
M_CAP	Benign	0.012	T
MetaRNN	Benign	0.35	T
MetaSVM	Benign	-1.2	T
MutationAssessor	Uncertain	2.1	M
PhyloP100		-0.031
PrimateAI	Benign	0.42	T
PROVEAN	Uncertain	-3.5	D
REVEL	Benign	0.10
Sift	Uncertain	0.0070	D
Sift4G	Uncertain	0.019	D
Polyphen		1.0	D
Vest4		0.24
MutPred		0.34		Gain of solvent accessibility (P = 0.0026)
MVP		0.51
MPC		0.55
ClinPred		0.97	D
GERP RS		3.7
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.0
Varity_R		0.23
gMVP		0.13
Mutation Taster		=72/28	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.27
dbscSNV1_RF	Benign	0.43
SpliceAI score (max)		0.12		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs367892824; hg19: chr20-3838454;