1-11022238-G-C

Position:

• chr1-11022238-G-C

Variant summary

Our verdict is Uncertain significance. Variant got 5 ACMG points: 5P and 0B. PM1 PM2 PP2

The NM_007375.4(TARDBP):​c.829G>C​(p.Gly277Arg) 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 (no stars).

• Frequency: Genomes: not found (cov: 33)
• Consequence: TARDBP NM_007375.4 missense
• Clinical Significance: Uncertain significance no assertion criteria provided U:1
• Conservation: PhyloP100: 7.62

Genes affected

TARDBP (HGNC:11571): (TAR DNA binding protein) HIV-1, the causative agent of acquired immunodeficiency syndrome (AIDS), contains an RNA genome that produces a chromosomally integrated DNA during the replicative cycle. Activation of HIV-1 gene expression by the transactivator Tat is dependent on an RNA regulatory element (TAR) located downstream of the transcription initiation site. The protein encoded by this gene is a transcriptional repressor that binds to chromosomally integrated TAR DNA and represses HIV-1 transcription. In addition, this protein regulates alternate splicing of the CFTR gene. A similar pseudogene is present on chromosome 20. [provided by RefSeq, Jul 2008]

MASP2 (HGNC:6902): (MBL associated serine protease 2) This gene encodes a member of the peptidase S1 family of serine proteases. The encoded preproprotein is proteolytically processed to generate A and B chains that heterodimerize to form the mature protease. This protease cleaves complement components C2 and C4 in order to generate C3 convertase in the lectin pathway of the complement system. The encoded protease also plays a role in the coagulation cascade through cleavage of prothrombin to form thrombin. Myocardial infarction and acute stroke patients exhibit reduced serum concentrations of the encoded protein. Alternative splicing results in multiple transcript variants, at least one of which encodes an isoform that is proteolytically processed. [provided by RefSeq, Feb 2016]

ACMG classification

Verdict is Uncertain_significance. Variant got 5 ACMG points.

• PM1: In a region_of_interest Disordered (size 42) in uniprot entity TADBP_HUMAN there are 12 pathogenic changes around while only 0 benign (100%) in NM_007375.4
• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in gene, where missense usually causes diseases (based on misZ statistic), TARDBP. . Gene score misZ 3.7095 (greater than the threshold 3.09). Trascript score misZ 5.3115 (greater than threshold 3.09). GenCC has associacion of gene with amyotrophic lateral sclerosis type 10, amyotrophic lateral sclerosis, frontotemporal dementia with motor neuron disease.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TARDBP	NM_007375.4	c.829G>C	p.Gly277Arg	missense_variant	6/6	ENST00000240185.8	NP_031401.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TARDBP	ENST00000240185.8	c.829G>C	p.Gly277Arg	missense_variant	6/6	1	NM_007375.4	ENSP00000240185	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: no assertion criteria provided

Submissions by phenotype

TARDBP-related disorder Uncertain:1

Uncertain significance, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Sep 26, 2024

The TARDBP c.829G>C variant is predicted to result in the amino acid substitution p.Gly277Arg. To our knowledge, this variant has not been reported in the literature or in a large population database, indicating this variant is rare. At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.84
BayesDel_addAF	Pathogenic	0.36	D
BayesDel_noAF	Pathogenic	0.28
CADD	Uncertain	23
DANN	Pathogenic	1.0
DEOGEN2	Benign	0.38	T;T;T;T;T;.;T;T;T
Eigen	Uncertain	0.65
Eigen_PC	Pathogenic	0.70
FATHMM_MKL	Pathogenic	0.97	D
LIST_S2	Uncertain	0.96	.;D;.;D;T;D;D;D;D
M_CAP	Uncertain	0.11	D
MetaRNN	Uncertain	0.66	D;D;D;D;D;D;D;D;D
MetaSVM	Uncertain	0.36	D
MutationAssessor	Benign	1.9	L;L;.;.;.;.;.;.;.
MutationTaster	Benign	1.0	D;D;D
PrimateAI	Uncertain	0.78	T
PROVEAN	Benign	-1.6	N;.;.;.;D;.;.;.;.
REVEL	Uncertain	0.53
Sift	Benign	0.26	T;.;.;.;D;.;.;.;.
Sift4G	Benign	0.20	T;.;D;D;D;.;D;D;D
Polyphen		0.92	P;P;.;.;.;.;.;.;.
Vest4		0.79
MutPred		0.34		Gain of methylation at G277 (P = 0.0016);Gain of methylation at G277 (P = 0.0016);Gain of methylation at G277 (P = 0.0016);.;Gain of methylation at G277 (P = 0.0016);.;Gain of methylation at G277 (P = 0.0016);Gain of methylation at G277 (P = 0.0016);.;
MVP		0.90
MPC		2.0
ClinPred		0.84	D
GERP RS		5.8
Varity_R		0.30
gMVP		0.85

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.35		Details are displayed if max score is > 0.2
DS_DG_spliceai		0.35		Position offset: 3

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: chr1-11082295;