15-39582249-A-G

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 1P and 2B. PP2 BP4_Moderate

The NM_003246.4(THBS1):c.124A>G(p.Lys42Glu) variant causes a missense change. The variant allele was found at a frequency of 0.00000479 in 1,461,744 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000048 (0 hom.)
• Consequence: THBS1 NM_003246.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 6.88

Genes affected

THBS1 (HGNC:11785): (thrombospondin 1) The protein encoded by this gene is a subunit of a disulfide-linked homotrimeric protein. This protein is an adhesive glycoprotein that mediates cell-to-cell and cell-to-matrix interactions. This protein can bind to fibrinogen, fibronectin, laminin, type V collagen and integrins alpha-V/beta-1. This protein has been shown to play roles in platelet aggregation, angiogenesis, and tumorigenesis. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Likely_benign. Variant got -1 ACMG points.

• PP2: Missense variant where missense usually causes diseases, THBS1
• BP4: Computational evidence support a benign effect (MetaRNN=0.2491326).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
THBS1	NM_003246.4	c.124A>G	p.Lys42Glu	missense_variant	3/22	ENST00000260356.6
THBS1	XM_047432980.1	c.124A>G	p.Lys42Glu	missense_variant	3/22
THBS1	XM_011521971.3	c.124A>G	p.Lys42Glu	missense_variant	3/21

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
THBS1	ENST00000260356.6	c.124A>G	p.Lys42Glu	missense_variant	3/22	1	NM_003246.4	P1
THBS1	ENST00000397591.2	c.124A>G	p.Lys42Glu	missense_variant	3/3	2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000479 AC: 7 AN: 1461744 Hom.: 0 Cov.: 31 AF XY: 0.00000550 AC XY: 4 AN XY: 727164

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: 0.00000630

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Mar 29, 2022

The c.124A>G (p.K42E) alteration is located in exon 3 (coding exon 2) of the THBS1 gene. This alteration results from a A to G substitution at nucleotide position 124, causing the lysine (K) at amino acid position 42 to be replaced by a glutamic acid (E). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.41
BayesDel_addAF	Benign	-0.095	T
BayesDel_noAF	Benign	-0.37
Cadd	Uncertain	24
Dann	Uncertain	1.0
Eigen	Benign	0.18
Eigen_PC	Uncertain	0.27
FATHMM_MKL	Uncertain	0.76	D
LIST_S2	Benign	0.85	T;T
M_CAP	Benign	0.0056	T
MetaRNN	Benign	0.25	T;T
MetaSVM	Benign	-1.1	T
MutationTaster	Benign	0.84	N
PrimateAI	Uncertain	0.51	T
PROVEAN	Uncertain	-3.6	D;N
REVEL	Benign	0.090
Sift	Uncertain	0.0030	D;D
Sift4G	Pathogenic	0.0	D;D
Polyphen		0.50	.;P
Vest4		0.55
MutPred		0.30		Loss of MoRF binding (P = 0.0104);Loss of MoRF binding (P = 0.0104);
MVP		0.26
MPC		0.92
ClinPred		0.97	D
GERP RS		5.2
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.52
gMVP		0.87

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr15-39874450;