Genetic Variant TGS1:p.Glu20Val (chr8-55773677-A-T) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_024831.8(TGS1):c.59A>T(p.Glu20Val) variant causes a missense change. The variant allele was found at a frequency of 0.00000823 in 1,458,818 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. E20A) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000082 ( 0 hom. )

Consequence

TGS1
NM_024831.8 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.86

Publications

0 publications found

Variant links:

Genes affected

TGS1 (HGNC:17843): (trimethylguanosine synthase 1) Enables RNA trimethylguanosine synthase activity. Involved in 7-methylguanosine cap hypermethylation. Located in cytosol and nucleus. [provided by Alliance of Genome Resources, Apr 2022]

TGS1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.20798364).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_024831.8. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
TGS1	NM_024831.8	MANE Select	c.59A>T	p.Glu20Val	missense	Exon 1 of 13	NP_079107.6
TGS1	NM_001363184.2		c.-156A>T		5_prime_UTR	Exon 1 of 12	NP_001350113.1
TGS1	NM_001317902.2		c.-156A>T		5_prime_UTR	Exon 1 of 11	NP_001304831.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
TGS1	ENST00000260129.6	TSL:1 MANE Select	c.59A>T	p.Glu20Val	missense	Exon 1 of 13	ENSP00000260129.5	Q96RS0
TGS1	ENST00000523948.5	TSL:1	n.59A>T		non_coding_transcript_exon	Exon 1 of 11	ENSP00000430467.1	E5RJW7
TGS1	ENST00000938743.1		c.59A>T	p.Glu20Val	missense	Exon 1 of 13	ENSP00000608802.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.0000363

AC:

AN:

247676

AF XY:

0.0000523

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000271

Gnomad ASJ exome

AF:

0.00

Gnomad EAS 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:

0.00000823

AC:

AN:

1458818

Hom.:

Cov.:

AF XY:

0.0000110

AC XY:

AN XY:

725672

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33358

American (AMR)

AF:

0.000272

AC:

AN:

44196

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26078

East Asian (EAS)

AF:

0.00

AC:

AN:

39386

South Asian (SAS)

AF:

0.00

AC:

AN:

85534

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53338

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1110882

Other (OTH)

AF:

0.00

AC:

AN:

60280

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.446

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000113

ExAC

AF:

0.0000330

AC:

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.20

BayesDel_addAF

Benign

-0.32

BayesDel_noAF

Benign

-0.40

CADD

Uncertain

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.056

Eigen

Uncertain

0.19

Eigen_PC

Benign

0.097

FATHMM_MKL

Uncertain

0.76

LIST_S2

Benign

0.47

M_CAP

Benign

0.0089

MetaRNN

Benign

0.21

MetaSVM

Benign

-1.0

MutationAssessor

Uncertain

2.0

PhyloP100

3.9

PrimateAI

Benign

0.47

PROVEAN

Benign

-1.6

REVEL

Benign

0.18

Sift

Uncertain

0.0030

Sift4G

Uncertain

0.014

Polyphen

1.0

Vest4

0.34

MutPred

0.35

Gain of sheet (P = 0.0344)

MVP

0.53

MPC

0.18

ClinPred

0.66

GERP RS

3.7

PromoterAI

0.026

Neutral

(source)

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

2.2

Varity_R

0.23

gMVP

0.47

Mutation Taster

=83/17

polymorphism

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over