Genetic Variant TANC2:p.Leu10Arg (chr17-63009588-T-G) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_001394998.1(TANC2):c.29T>G(p.Leu10Arg) variant causes a missense change. The variant allele was found at a frequency of 0.000000685 in 1,460,864 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

TANC2
NM_001394998.1 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.05

Publications

0 publications found

Variant links:

Genes affected

TANC2 (HGNC:30212): (tetratricopeptide repeat, ankyrin repeat and coiled-coil containing 2) Predicted to be involved in dense core granule cytoskeletal transport; regulation of dendritic spine development; and regulation of dendritic spine morphogenesis. Predicted to act upstream of or within in utero embryonic development. Located in dendritic spine. [provided by Alliance of Genome Resources, Apr 2022]

TANC2 Gene-Disease associations (from GenCC):

intellectual developmental disorder with autistic features and language delay, with or without seizures
Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE, LIMITED Submitted by: Illumina, Labcorp Genetics (formerly Invitae), G2P, Ambry Genetics, ClinGen
syndromic intellectual disability
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

TANC2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TANC2	NM_001394998.1 link	c.29T>G	p.Leu10Arg	missense_variant	Exon 2 of 28	ENST00000689528.1	NP_001381927.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
TANC2	ENST00000689528.1 link	c.29T>G	p.Leu10Arg	missense_variant	Exon 2 of 28		NM_001394998.1	ENSP00000510600.1	A0A8I5KXR5
TANC2	ENST00000424789.6 link	c.29T>G	p.Leu10Arg	missense_variant	Exon 1 of 25	1		ENSP00000387593.2	Q9HCD6-1
TANC2	ENST00000389520.8 link	c.29T>G	p.Leu10Arg	missense_variant	Exon 1 of 26	5		ENSP00000374171.4	Q9HCD6-2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.85e-7

AC:

AN:

1460864

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726716

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33436

American (AMR)

AF:

0.0000224

AC:

AN:

44650

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26102

East Asian (EAS)

AF:

0.00

AC:

AN:

39600

South Asian (SAS)

AF:

0.00

AC:

AN:

86216

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53386

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5754

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111398

Other (OTH)

AF:

0.00

AC:

AN:

60322

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000936

Hom.:

Bravo

AF:

0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Feb 20, 2023

GeneDx

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant does not alter 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

0.90

BayesDel_addAF

Pathogenic

0.18

BayesDel_noAF

Uncertain

0.020

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.066

T;.

Eigen

Uncertain

0.36

Eigen_PC

Uncertain

0.44

FATHMM_MKL

Uncertain

0.90

LIST_S2

Uncertain

0.91

D;D

M_CAP

Benign

0.038

MetaRNN

Uncertain

0.73

D;D

MetaSVM

Benign

-0.46

MutationAssessor

Benign

0.69

N;N

PhyloP100

5.1

PrimateAI

Pathogenic

0.89

PROVEAN

Benign

0.35

N;N

REVEL

Uncertain

0.36

Sift

Benign

0.16

T;T

Sift4G

Benign

0.13

T;T

Polyphen

0.99

D;.

Vest4

0.84

MutPred

0.26

Gain of solvent accessibility (P = 0.0171);Gain of solvent accessibility (P = 0.0171);

MVP

0.77

MPC

0.43

ClinPred

0.81

GERP RS

5.6

PromoterAI

0.036

Neutral

(source)

Varity_R

0.27

gMVP

0.73

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over