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20-2394496-G-A

Variant summary

Our verdict is Benign. Variant got -10 ACMG points: 0P and 10B. BP4_StrongBP6_ModerateBS2

The NM_198994.3(TGM6):c.52G>A(p.Ala18Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000101 in 1,611,578 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.000092 ( 0 hom., cov: 32)
Exomes 𝑓: 0.00010 ( 0 hom. )

Consequence

TGM6
NM_198994.3 missense

Scores

19

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: -2.93
Variant links:
Genes affected
TGM6 (HGNC:16255): (transglutaminase 6) The protein encoded by this gene belongs to the transglutaminase superfamily. It catalyzes the cross-linking of proteins and the conjugation of polyamines to proteins. Mutations in this gene are associated with spinocerebellar ataxia type 35 (SCA35). Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Dec 2011]

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -10 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.052517533).
BP6
Variant 20-2394496-G-A is Benign according to our data. Variant chr20-2394496-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 1131237.Status of the report is criteria_provided_single_submitter, 1 stars.
BS2
High AC in GnomAd at 12 AD gene.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
TGM6NM_198994.3 linkuse as main transcriptc.52G>A p.Ala18Thr missense_variant 2/13 ENST00000202625.7
TGM6NM_001254734.2 linkuse as main transcriptc.52G>A p.Ala18Thr missense_variant 2/12

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
TGM6ENST00000202625.7 linkuse as main transcriptc.52G>A p.Ala18Thr missense_variant 2/131 NM_198994.3 P1O95932-1
TGM6ENST00000381423.1 linkuse as main transcriptc.52G>A p.Ala18Thr missense_variant 2/121 O95932-2
TGM6ENST00000477505.1 linkuse as main transcriptn.45G>A non_coding_transcript_exon_variant 1/45

Frequencies

GnomAD3 genomes
AF:
0.0000789
AC:
12
AN:
152162
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.000145
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.0000654
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.0000942
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000588
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.0000883
AC:
22
AN:
249230
Hom.:
0
AF XY:
0.0000889
AC XY:
12
AN XY:
134942
show subpopulations
Gnomad AFR exome
AF:
0.0000618
Gnomad AMR exome
AF:
0.000116
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.0000469
Gnomad NFE exome
AF:
0.000143
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.000101
AC:
148
AN:
1459298
Hom.:
0
Cov.:
30
AF XY:
0.0000964
AC XY:
70
AN XY:
725996
show subpopulations
Gnomad4 AFR exome
AF:
0.0000599
Gnomad4 AMR exome
AF:
0.000112
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.0000566
Gnomad4 NFE exome
AF:
0.000118
Gnomad4 OTH exome
AF:
0.000116
GnomAD4 genome
AF:
0.0000919
AC:
14
AN:
152280
Hom.:
0
Cov.:
32
AF XY:
0.0000671
AC XY:
5
AN XY:
74462
show subpopulations
Gnomad4 AFR
AF:
0.000193
Gnomad4 AMR
AF:
0.0000653
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.0000942
Gnomad4 NFE
AF:
0.0000588
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.000132
Hom.:
0
Bravo
AF:
0.0000491
TwinsUK
AF:
0.000270
AC:
1
ALSPAC
AF:
0.00
AC:
0
ESP6500AA
AF:
0.00
AC:
0
ESP6500EA
AF:
0.000116
AC:
1
ExAC
AF:
0.0000988
AC:
12
Asia WGS
AF:
0.000866
AC:
3
AN:
3478
EpiCase
AF:
0.000273
EpiControl
AF:
0.0000593

ClinVar

Significance: Likely benign
Submissions summary: Benign:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

not provided Benign:1
Likely benign, criteria provided, single submitterclinical testingInvitaeNov 19, 2022- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.073
BayesDel_addAF
Benign
-0.41
T
BayesDel_noAF
Benign
-0.57
Cadd
Benign
0.40
Dann
Benign
0.90
DEOGEN2
Benign
0.073
T;.
Eigen
Benign
-1.5
Eigen_PC
Benign
-1.6
FATHMM_MKL
Benign
0.023
N
LIST_S2
Benign
0.050
T;T
M_CAP
Benign
0.020
T
MetaRNN
Benign
0.053
T;T
MetaSVM
Benign
-0.80
T
MutationAssessor
Benign
0.92
L;L
MutationTaster
Benign
1.0
N;N
PrimateAI
Benign
0.29
T
PROVEAN
Benign
-1.2
N;N
REVEL
Benign
0.074
Sift
Benign
0.33
T;T
Sift4G
Benign
0.33
T;T
Polyphen
0.12
B;B
Vest4
0.11
MVP
0.42
MPC
0.089
ClinPred
0.042
T
GERP RS
-4.4
Varity_R
0.080
gMVP
0.086

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.

Other links and lift over

dbSNP: rs202247258; hg19: chr20-2375142; COSMIC: COSV52479725; API