1-35893682-C-T

Position:

• chr1-35893682-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP2

The NM_012199.5(AGO1):​c.521C>T​(p.Pro174Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: AGO1 NM_012199.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.71

Genes affected

AGO1 (HGNC:3262): (argonaute RISC component 1) This gene encodes a member of the argonaute family of proteins, which associate with small RNAs and have important roles in RNA interference (RNAi) and RNA silencing. This protein binds to microRNAs (miRNAs) or small interfering RNAs (siRNAs) and represses translation of mRNAs that are complementary to them. It is also involved in transcriptional gene silencing (TGS) of promoter regions that are complementary to bound short antigene RNAs (agRNAs), as well as in the degradation of miRNA-bound mRNA targets. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. A recent study showed this gene to be an authentic stop codon readthrough target, and that its mRNA could give rise to an additional C-terminally extended isoform by use of an alternative in-frame translation termination codon. [provided by RefSeq, Nov 2015]

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in gene, where missense usually causes diseases (based on misZ statistic), AGO1. . Gene score misZ 5.6761 (greater than the threshold 3.09). Trascript score misZ 6.4282 (greater than threshold 3.09). GenCC has associacion of gene with neurodevelopmental disorder with language delay and behavioral abnormalities, with or without seizures.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
AGO1	NM_012199.5	c.521C>T	p.Pro174Leu	missense_variant	5/19	ENST00000373204.6	NP_036331.1
AGO1	NM_001317122.2	c.521C>T	p.Pro174Leu	missense_variant	5/19		NP_001304051.1
AGO1	NM_001317123.2	c.296C>T	p.Pro99Leu	missense_variant	5/19		NP_001304052.1
AGO1	XM_011541236.3	c.521C>T	p.Pro174Leu	missense_variant	5/19		XP_011539538.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
AGO1	ENST00000373204.6	c.521C>T	p.Pro174Leu	missense_variant	5/19	1	NM_012199.5	ENSP00000362300	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Dec 19, 2022

Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.96
BayesDel_addAF	Pathogenic	0.19	D
BayesDel_noAF	Uncertain	0.040
CADD	Pathogenic	29
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.54	.;D
Eigen	Pathogenic	0.77
Eigen_PC	Pathogenic	0.80
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Pathogenic	0.99	D;D
M_CAP	Benign	0.0080	T
MetaRNN	Uncertain	0.55	D;D
MetaSVM	Benign	-1.2	T
MutationAssessor	Uncertain	2.8	.;M
MutationTaster	Benign	1.0	D;D
PrimateAI	Pathogenic	0.88	D
PROVEAN	Pathogenic	-8.2	D;D
REVEL	Uncertain	0.43
Sift	Benign	0.034	D;D
Sift4G	Uncertain	0.040	D;D
Polyphen		0.98	.;D
Vest4		0.52
MutPred		0.63		.;Loss of phosphorylation at T173 (P = 0.0579);
MVP		0.80
MPC		1.9
ClinPred		1.0	D
GERP RS		5.9
Varity_R		0.55
gMVP		0.97

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr1-36359283;