1-175146431-A-T

Variant names:

• chr1-175146431-A-T
• rs2018318
• NM_022093.2:c.3760-500A>T

Variant summary

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

The NM_022093.2(TNN):​c.3760-500A>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts 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: 33)
• Consequence: TNN NM_022093.2 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.02

Genes affected

TNN (HGNC:22942): (tenascin N) Predicted to enable integrin binding activity. Predicted to be involved in several processes, including generation of neurons; negative regulation of canonical Wnt signaling pathway involved in osteoblast differentiation; and negative regulation of osteoblast differentiation. Predicted to act upstream of or within axonogenesis. Predicted to be located in extracellular matrix and neuron projection. Predicted to be active in collagen-containing extracellular matrix and extracellular space. [provided by Alliance of Genome Resources, Apr 2022]

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 (BayesDel_noAF=-0.25).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TNN	NM_022093.2	c.3760-500A>T		intron_variant	Intron 18 of 18	ENST00000239462.9	NP_071376.1
TNN	XM_017002048.2	c.3814-500A>T		intron_variant	Intron 18 of 18		XP_016857537.1
TNN	XM_017002049.2	c.3550-500A>T		intron_variant	Intron 17 of 17		XP_016857538.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TNN	ENST00000239462.9	c.3760-500A>T		intron_variant	Intron 18 of 18	2	NM_022093.2	ENSP00000239462.4
TNN	ENST00000621086.1	c.3229-500A>T		intron_variant	Intron 15 of 15	5		ENSP00000480895.1

Frequencies

GnomAD3 genomes Cov.: 33

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.25
CADD	Benign	17
DANN	Benign	0.74

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

Other links and lift over

dbSNP: rs2018318; hg19: chr1-175115567;