Genetic Variant TSPEAR:p.Ala15Asp (chr21-44711471-G-T) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_144991.3(TSPEAR):c.44C>A(p.Ala15Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000411 in 1,459,228 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A15V) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000041 ( 0 hom. )

Consequence

TSPEAR
NM_144991.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 1.34

Publications

0 publications found

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 Gene-Disease associations (from GenCC):

ectodermal dysplasia 14, hair/tooth type with or without hypohidrosis
Inheritance: AR Classification: STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics
hearing loss, autosomal recessive
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
autosomal recessive nonsyndromic hearing loss 98
Inheritance: AR Classification: LIMITED, NO_KNOWN Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, PanelApp Australia
nonsyndromic genetic hearing loss
Inheritance: AR Classification: NO_KNOWN Submitted by: ClinGen

TSPEAR links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.19992897).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TSPEAR	NM_144991.3 link	c.44C>A	p.Ala15Asp	missense_variant	Exon 1 of 12	ENST00000323084.9	NP_659428.2
TSPEAR	NM_001272037.2 link	c.-223C>A		5_prime_UTR_variant	Exon 1 of 13		NP_001258966.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TSPEAR	ENST00000323084.9 link	c.44C>A	p.Ala15Asp	missense_variant	Exon 1 of 12	1	NM_144991.3	ENSP00000321987.4
TSPEAR	ENST00000642437.1 link	n.44C>A		non_coding_transcript_exon_variant	Exon 1 of 13			ENSP00000496535.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000411

AC:

AN:

1459228

Hom.:

Cov.:

AF XY:

0.00000413

AC XY:

AN XY:

725778

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33462

American (AMR)

AF:

0.00

AC:

AN:

44534

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26058

East Asian (EAS)

AF:

0.00

AC:

AN:

39616

South Asian (SAS)

AF:

0.00

AC:

AN:

85886

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52404

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.00000540

AC:

AN:

1111252

Other (OTH)

AF:

0.00

AC:

AN:

60250

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.450

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.15

BayesDel_addAF

Benign

-0.17

BayesDel_noAF

Benign

-0.48

CADD

Benign

(source)

DANN

Benign

0.88

DEOGEN2

Benign

0.029

T;T

Eigen

Benign

-0.95

Eigen_PC

Benign

-0.90

FATHMM_MKL

Benign

0.32

LIST_S2

Benign

0.0

.;T

M_CAP

Benign

0.012

MetaRNN

Benign

0.20

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.0

N;N

PhyloP100

1.3

PrimateAI

Uncertain

0.49

PROVEAN

Benign

0.0

.;N

REVEL

Benign

0.0

Sift

Pathogenic

0.0

.;T

Sift4G

Uncertain

0.019

D;D

Vest4

0.55

ClinPred

0.081

GERP RS

1.9

PromoterAI

0.028

Neutral

(source)

Varity_R

0.060

gMVP

0.45

Mutation Taster

=98/2

polymorphism

(source)

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

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over