2-137094968-C-G

Position:

• chr2-137094968-C-G

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2 PP3_Strong

The NM_001316349.2(THSD7B):​c.1046C>G​(p.Ser349Cys) variant causes a missense change. The variant allele was found at a frequency of 0.00000137 in 1,461,612 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: THSD7B NM_001316349.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.84

Genes affected

THSD7B (HGNC:29348): (thrombospondin type 1 domain containing 7B) Predicted to be involved in actin cytoskeleton reorganization. Predicted to be integral component of membrane. Predicted to be active in plasma membrane. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.955

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
THSD7B	NM_001316349.2	c.1046C>G	p.Ser349Cys	missense_variant	4/28	ENST00000409968.6	NP_001303278.1
THSD7B	XM_047445935.1	c.623C>G	p.Ser208Cys	missense_variant	4/28		XP_047301891.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
THSD7B	ENST00000409968.6	c.1046C>G	p.Ser349Cys	missense_variant	4/28	5	NM_001316349.2	ENSP00000387145.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461612 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 727086

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: 8.99e-7

Gnomad4 OTH exome AF: 0.0000166

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

Jul 01, 2024

The c.953C>G (p.S318C) alteration is located in exon 3 (coding exon 3) of the THSD7B gene. This alteration results from a C to G substitution at nucleotide position 953, causing the serine (S) at amino acid position 318 to be replaced by a cysteine (C). 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	Pathogenic	0.81
BayesDel_addAF	Pathogenic	0.29	D
BayesDel_noAF	Pathogenic	0.18
CADD	Pathogenic	28
DANN	Uncertain	0.99
DEOGEN2	Benign	0.20	T;.;T
Eigen	Pathogenic	1.1
Eigen_PC	Pathogenic	0.97
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.97	D;.;D
M_CAP	Uncertain	0.27	D
MetaRNN	Pathogenic	0.96	D;D;D
MetaSVM	Uncertain	0.66	D
PrimateAI	Benign	0.41	T
PROVEAN	Uncertain	-3.7	D;D;D
REVEL	Pathogenic	0.67
Sift	Uncertain	0.0010	D;D;D
Sift4G	Pathogenic	0.0	D;D;D
Polyphen		1.0	.;.;D
Vest4		0.77
MutPred		0.79		Gain of catalytic residue at S349 (P = 0.0097);Gain of catalytic residue at S349 (P = 0.0097);.;
MVP		0.82
MPC		0.61
ClinPred		1.0	D
GERP RS		5.6
gMVP		0.70

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: chr2-137852538;