Genetic Variant NM_001244950.2:c.1109C>A (chr10-72063045-G-T) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001244950.2(SPOCK2):c.1109C>A(p.Thr370Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000257 in 1,553,860 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 17/22 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. T370M) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

SPOCK2
NM_001244950.2 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.167

Publications

0 publications found

Variant links:

Genes affected

SPOCK2 (HGNC:13564): (SPARC (osteonectin), cwcv and kazal like domains proteoglycan 2) This gene encodes a protein which binds with glycosaminoglycans to form part of the extracellular matrix. The protein contains thyroglobulin type-1, follistatin-like, and calcium-binding domains, and has glycosaminoglycan attachment sites in the acidic C-terminal region. Three alternatively spliced transcript variants that encode different protein isoforms have been described for this gene. [provided by RefSeq, Oct 2011]

SPOCK2 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.040655524).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SPOCK2	NM_001244950.2 link	c.1109C>A	p.Thr370Lys	missense_variant	Exon 10 of 11	ENST00000373109.7	NP_001231879.1	Q92563-1
SPOCK2	NM_014767.2 link	c.1109C>A	p.Thr370Lys	missense_variant	Exon 11 of 12		NP_055582.1	Q92563-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SPOCK2	ENST00000373109.7 link	c.1109C>A	p.Thr370Lys	missense_variant	Exon 10 of 11	1	NM_001244950.2	ENSP00000362201.2		Q92563-1

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152192

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000193

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000143

AC:

AN:

1401550

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

691636

show subpopulations

African (AFR)

AF:

0.0000316

AC:

AN:

31684

American (AMR)

AF:

0.00

AC:

AN:

36052

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25192

East Asian (EAS)

AF:

0.00

AC:

AN:

35874

South Asian (SAS)

AF:

0.00

AC:

AN:

79440

European-Finnish (FIN)

AF:

0.00

AC:

AN:

49140

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5694

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1080350

Other (OTH)

AF:

0.0000172

AC:

AN:

58124

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.500

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152310

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74478

show subpopulations

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.0000241

AC:

AN:

41570

American (AMR)

AF:

0.00

AC:

AN:

15310

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.000193

AC:

AN:

5182

South Asian (SAS)

AF:

0.00

AC:

AN:

4822

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10612

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68026

Other (OTH)

AF:

0.00

AC:

AN:

2114

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0.002339), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.350

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000756

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.095

BayesDel_addAF

Benign

-0.23

BayesDel_noAF

Benign

-0.56

CADD

Benign

0.11

(source)

DANN

Benign

0.39

DEOGEN2

Benign

0.095

T;T;.

Eigen

Benign

-1.2

Eigen_PC

Benign

-1.3

FATHMM_MKL

Benign

0.084

LIST_S2

Benign

0.77

.;T;T

M_CAP

Benign

0.049

MetaRNN

Benign

0.041

T;T;T

MetaSVM

Benign

-0.97

MutationAssessor

Benign

1.1

L;L;.

PhyloP100

0.17

PrimateAI

Benign

0.32

PROVEAN

Benign

-1.3

.;N;.

REVEL

Benign

0.10

Sift

Benign

0.79

.;T;.

Sift4G

Benign

0.73

T;T;T

Polyphen

0.35

B;B;.

Vest4

0.16

MutPred

0.50

Gain of ubiquitination at T370 (P = 0.0045);Gain of ubiquitination at T370 (P = 0.0045);.;

MVP

0.17

MPC

0.36

ClinPred

0.15

GERP RS

-2.9

Varity_R

0.081

gMVP

0.69

Mutation Taster

=93/7

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

ClinVar

Computational scores

Splicing

Publications

Other links and lift over