Genetic Variant TSPEAR:c.791-14G>A (chr21-44528597-C-T) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_144991.3(TSPEAR):c.791-14G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,460,310 control chromosomes in the GnomAD database, with no homozygous occurrence. 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)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

TSPEAR
NM_144991.3 intron

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.887

Variant links:

Genes affected

TSPEAR (HGNC:1268): (thrombospondin type laminin G domain and EAR repeats) This gene encodes a protein that contains a N-terminal thrombospondin-type laminin G domain and several tandem arranged epilepsy-associated repeats (EARs). A mutation in this gene is the cause of autosomal recessive deafness-98. Alternate splicing results in multiple transcript variants. [provided by RefSeq, Dec 2012]

TSPEAR links:

LOC124905038 (HGNC:):

LOC124905038 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

Splicing scoreres supports a deletorius effect: Scorers claiming Pathogenic: max_spliceai. No scorers claiming Uncertain. No scorers claiming Benign.

Transcripts

RefSeq

Gene	Transcript	HGVSc	Effect	Exon rank	MANE	Protein	UniProt
TSPEAR	NM_144991.3 link	c.791-14G>A	intron_variant	Intron 5 of 11	ENST00000323084.9	NP_659428.2	Q8WU66-1
TSPEAR	NM_001272037.2 link	c.587-14G>A	intron_variant	Intron 6 of 12		NP_001258966.1	Q8WU66
LOC124905038	XR_007067905.1 link	n.1089C>T	non_coding_transcript_exon_variant	Exon 1 of 2

Ensembl

Gene	Transcript	HGVSc	Effect	Exon rank	TSL	MANE	Protein	UniProt
TSPEAR	ENST00000323084.9 link	c.791-14G>A	intron_variant	Intron 5 of 11	1	NM_144991.3	ENSP00000321987.4	Q8WU66-1
TSPEAR	ENST00000397916.1 link	n.746-14G>A	intron_variant	Intron 5 of 10	1
TSPEAR	ENST00000642437.1 link	n.*736-14G>A	intron_variant	Intron 6 of 12			ENSP00000496535.1	A0A2R8YFK6

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.85e-7

AC:

AN:

1460310

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726472

show subpopulations

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:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

9.00e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Bravo

AF:

0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.81

CADD

Pathogenic

DANN

Benign

0.80

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.82

Details are displayed if max score is > 0.2

DS_AG_spliceai

0.82

Position offset: -2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

LitVar

Other links and lift over