NM_198994.3:c.691C>G

Variant names:

• chr20-2399579-C-G
• NM_198994.3:c.691C>G

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_198994.3(TGM6):​c.691C>G​(p.Arg231Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,460,790 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: TGM6 NM_198994.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.126

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.24509874).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TGM6	NM_198994.3	c.691C>G	p.Arg231Gly	missense_variant	Exon 6 of 13	ENST00000202625.7	NP_945345.2
TGM6	NM_001254734.2	c.691C>G	p.Arg231Gly	missense_variant	Exon 6 of 12		NP_001241663.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TGM6	ENST00000202625.7	c.691C>G	p.Arg231Gly	missense_variant	Exon 6 of 13	1	NM_198994.3	ENSP00000202625.2
TGM6	ENST00000381423.1	c.691C>G	p.Arg231Gly	missense_variant	Exon 6 of 12	1		ENSP00000370831.1
TGM6	ENST00000477505.1	n.322C>G		non_coding_transcript_exon_variant	Exon 3 of 4	5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.85e-7 AC: 1 AN: 1460790 Hom.: 0 Cov.: 32 AF XY: 0.00000138 AC XY: 1 AN XY: 726662

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000116

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.10
BayesDel_addAF	Uncertain	0.071	D
BayesDel_noAF	Benign	-0.14
CADD	Benign	21
DANN	Uncertain	0.99
DEOGEN2	Benign	0.014	T;.
Eigen	Benign	-0.47
Eigen_PC	Benign	-0.40
FATHMM_MKL	Benign	0.057	N
LIST_S2	Benign	0.54	T;T
M_CAP	Benign	0.048	D
MetaRNN	Benign	0.25	T;T
MetaSVM	Benign	-0.41	T
MutationAssessor	Benign	1.8	L;L
PrimateAI	Benign	0.25	T
PROVEAN	Uncertain	-2.4	N;N
REVEL	Uncertain	0.38
Sift	Benign	0.050	D;T
Sift4G	Benign	0.24	T;T
Polyphen		0.035	B;B
Vest4		0.44
MutPred		0.44		Loss of MoRF binding (P = 0.0136);Loss of MoRF binding (P = 0.0136);
MVP		0.58
MPC		0.12
ClinPred		0.27	T
GERP RS		2.9
Varity_R		0.14
gMVP		0.28

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: chr20-2380225;