2-159150437-C-A

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 3P and 1B. PM2 PP2 BP4

The NM_033394.3(TANC1):c.563C>A(p.Thr188Asn) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: TANC1 NM_033394.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.91

Genes affected

TANC1 (HGNC:29364): (tetratricopeptide repeat, ankyrin repeat and coiled-coil containing 1) Predicted to be involved in regulation of postsynapse organization. Predicted to act upstream of or within dendritic spine maintenance; myoblast fusion; and visual learning. Predicted to be located in several cellular components, including axon terminus; neuronal cell body; and postsynaptic density. Predicted to be active in glutamatergic synapse and postsynaptic density, intracellular component. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant where missense usually causes diseases, TANC1
• BP4: Computational evidence support a benign effect (MetaRNN=0.305865).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TANC1	NM_033394.3	c.563C>A	p.Thr188Asn	missense_variant	7/27	ENST00000263635.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TANC1	ENST00000263635.8	c.563C>A	p.Thr188Asn	missense_variant	7/27	5	NM_033394.3	P1
TANC1	ENST00000464096.1	n.1396C>A		non_coding_transcript_exon_variant	2/2	2
TANC1	ENST00000465963.1	n.1801C>A		non_coding_transcript_exon_variant	2/2	2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jan 31, 2022

The c.563C>A (p.T188N) alteration is located in exon 7 (coding exon 5) of the TANC1 gene. This alteration results from a C to A substitution at nucleotide position 563, causing the threonine (T) at amino acid position 188 to be replaced by an asparagine (N). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.37
BayesDel_addAF	Benign	-0.062	T
BayesDel_noAF	Benign	-0.33
Cadd	Pathogenic	27
Dann	Uncertain	0.99
DEOGEN2	Benign	0.24	T
Eigen	Pathogenic	0.71
Eigen_PC	Pathogenic	0.74
FATHMM_MKL	Pathogenic	0.97	D
LIST_S2	Benign	0.81	T
M_CAP	Benign	0.011	T
MetaRNN	Benign	0.31	T
MetaSVM	Benign	-0.96	T
MutationAssessor	Benign	1.9	L
MutationTaster	Benign	1.0	D;D
PrimateAI	Uncertain	0.72	T
PROVEAN	Benign	-1.7	N
REVEL	Benign	0.16
Sift	Uncertain	0.0050	D
Sift4G	Uncertain	0.052	T
Polyphen		0.95	P
Vest4		0.48
MutPred		0.069		Loss of glycosylation at T188 (P = 0.0073);
MVP		0.57
MPC		0.72
ClinPred		0.89	D
GERP RS		5.5
Varity_R		0.38
gMVP		0.56

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: chr2-160006948;