Genetic Variant THBS4:p.Asn220Lys (chr5-80058718-C-A) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_003248.6(THBS4):c.660C>A(p.Asn220Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,856 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another nucleotide change resulting in the same amino acid substitution has been previously reported as Uncertain significance in ClinVar.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

THBS4
NM_003248.6 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.0120

Publications

0 publications found

Variant links:

Genes affected

THBS4 (HGNC:11788): (thrombospondin 4) The protein encoded by this gene belongs to the thrombospondin protein family. Thrombospondin family members are adhesive glycoproteins that mediate cell-to-cell and cell-to-matrix interactions. This protein forms a pentamer and can bind to heparin and calcium. It is involved in local signaling in the developing and adult nervous system, and it contributes to spinal sensitization and neuropathic pain states. This gene is activated during the stromal response to invasive breast cancer. It may also play a role in inflammatory responses in Alzheimer's disease. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Apr 2015]

THBS4 links:

THBS4-AS1 (HGNC:40583): (THBS4 antisense RNA 1)

THBS4-AS1 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_003248.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
THBS4	NM_003248.6	MANE Select	c.660C>A	p.Asn220Lys	missense	Exon 5 of 22	NP_003239.2
THBS4	NM_001306212.2		c.387C>A	p.Asn129Lys	missense	Exon 6 of 23	NP_001293141.1	E7ES19
THBS4	NM_001306213.2		c.387C>A	p.Asn129Lys	missense	Exon 6 of 23	NP_001293142.1	E7ES19

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
THBS4	ENST00000350881.6	TSL:1 MANE Select	c.660C>A	p.Asn220Lys	missense	Exon 5 of 22	ENSP00000339730.2	P35443
THBS4	ENST00000970348.1		c.774C>A	p.Asn258Lys	missense	Exon 5 of 22	ENSP00000640407.1
THBS4	ENST00000854344.1		c.660C>A	p.Asn220Lys	missense	Exon 5 of 22	ENSP00000524403.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000795

AC:

AN:

251474

AF XY:

0.00000736

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000578

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1461856

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727232

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.0000447

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39698

South Asian (SAS)

AF:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53408

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111988

Other (OTH)

AF:

0.00

AC:

AN:

60396

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

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.:

Alfa

AF:

0.00

Hom.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.45

BayesDel_addAF

Benign

-0.35

BayesDel_noAF

Benign

-0.56

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.10

Eigen

Benign

-0.36

Eigen_PC

Benign

-0.29

FATHMM_MKL

Benign

0.68

LIST_S2

Benign

0.82

M_CAP

Benign

0.013

MetaRNN

Uncertain

0.59

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.1

PhyloP100

-0.012

PrimateAI

Uncertain

0.63

PROVEAN

Benign

-1.6

REVEL

Benign

0.095

Sift

Benign

0.089

Sift4G

Benign

0.96

Polyphen

0.80

Vest4

0.73

MutPred

0.46

Gain of methylation at N220 (P = 0.0017)

MVP

0.42

MPC

0.97

ClinPred

0.58

GERP RS

1.7

Varity_R

0.14

gMVP

0.43

Mutation Taster

=92/8

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

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

Publications

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over