Variant 4-1171044-G-C details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_012445.4(SPON2):c.591C>G(p.Phe197Leu) variant causes a missense change. The variant allele was found at a frequency of 0.00000387 in 1,549,180 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 34)

Exomes 𝑓: 7.2e-7 ( 0 hom. )

Consequence

SPON2
NM_012445.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.75

Variant links:

Genes affected

SPON2 (HGNC:11253): (spondin 2) Predicted to enable antigen binding activity; lipopolysaccharide binding activity; and metal ion binding activity. Predicted to be involved in cell adhesion. Predicted to act upstream of or within several processes, including defense response to other organism; opsonization; and positive regulation of cytokine production. Located in extracellular exosome. [provided by Alliance of Genome Resources, Apr 2022]

SPON2 links:

LOC124900647 (HGNC:):

LOC124900647 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.869

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SPON2	NM_012445.4 link	c.591C>G	p.Phe197Leu	missense_variant	4/6	ENST00000290902.10	NP_036577.2	Q9BUD6
SPON2	NM_001128325.3 link	c.591C>G	p.Phe197Leu	missense_variant	5/7		NP_001121797.2	Q9BUD6
SPON2	NM_001199021.2 link	c.591C>G	p.Phe197Leu	missense_variant	6/8		NP_001185950.2	Q9BUD6
LOC124900647	XM_047416477.1 link	c.-2486-20056G>C		intron_variant			XP_047272433.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SPON2	ENST00000290902.10 link	c.591C>G	p.Phe197Leu	missense_variant	4/6	1	NM_012445.4	ENSP00000290902.5		Q9BUD6

Frequencies

GnomAD3 genomes

AF:

0.0000328

AC:

AN:

152216

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

7.16e-7

AC:

AN:

1396846

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

688850

show subpopulations

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:

9.28e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000328

AC:

AN:

152334

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74500

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000196

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000189

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jul 19, 2022

The c.591C>G (p.F197L) alteration is located in exon 6 (coding exon 3) of the SPON2 gene. This alteration results from a C to G substitution at nucleotide position 591, causing the phenylalanine (F) at amino acid position 197 to be replaced by a leucine (L). 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

1.0

BayesDel_addAF

Uncertain

0.14

BayesDel_noAF

Uncertain

-0.030

CADD

Pathogenic

DANN

Uncertain

1.0

Eigen

Pathogenic

0.70

Eigen_PC

Uncertain

0.62

FATHMM_MKL

Uncertain

0.97

M_CAP

Uncertain

0.12

MetaRNN

Pathogenic

0.87

D;D;D

MetaSVM

Benign

-0.54

PrimateAI

Pathogenic

0.87

PROVEAN

Pathogenic

-5.6

D;D;.

REVEL

Uncertain

0.51

Sift

Uncertain

0.0050

D;D;.

Sift4G

Uncertain

0.010

D;D;D

Vest4

0.89

MutPred

0.78

Loss of glycosylation at S193 (P = 0.0309);Loss of glycosylation at S193 (P = 0.0309);Loss of glycosylation at S193 (P = 0.0309);

MVP

0.71

MPC

0.95

ClinPred

0.99

GERP RS

3.8

gMVP

0.78

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over