Genetic Variant SEMA3A:p.Gly756Asp (chr7-83961420-C-T) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_006080.3(SEMA3A):c.2267G>A(p.Gly756Asp) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,802 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 (no stars).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

SEMA3A
NM_006080.3 missense

Scores

Clinical Significance

Uncertain significance no assertion criteria provided U:1

Conservation

PhyloP100: 6.17

Variant links:

Genes affected

SEMA3A (HGNC:10723): (semaphorin 3A) This gene is a member of the semaphorin family and encodes a protein with an Ig-like C2-type (immunoglobulin-like) domain, a PSI domain and a Sema domain. This secreted protein can function as either a chemorepulsive agent, inhibiting axonal outgrowth, or as a chemoattractive agent, stimulating the growth of apical dendrites. In both cases, the protein is vital for normal neuronal pattern development. Increased expression of this protein is associated with schizophrenia and is seen in a variety of human tumor cell lines. Also, aberrant release of this protein is associated with the progression of Alzheimer's disease. [provided by RefSeq, Jul 2008]

SEMA3A links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.38378567).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SEMA3A	NM_006080.3 link	c.2267G>A	p.Gly756Asp	missense_variant	Exon 17 of 17	ENST00000265362.9	NP_006071.1	Q14563
SEMA3A	XM_005250110.4 link	c.2267G>A	p.Gly756Asp	missense_variant	Exon 20 of 20		XP_005250167.1	Q14563
SEMA3A	XM_047419751.1 link	c.2267G>A	p.Gly756Asp	missense_variant	Exon 21 of 21		XP_047275707.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SEMA3A	ENST00000265362.9 link	c.2267G>A	p.Gly756Asp	missense_variant	Exon 17 of 17	1	NM_006080.3	ENSP00000265362.3		Q14563
SEMA3A	ENST00000436949.5 link	c.2267G>A	p.Gly756Asp	missense_variant	Exon 18 of 18	5		ENSP00000415260.1		Q14563

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000398

AC:

AN:

251444

Hom.:

AF XY:

0.00000736

AC XY:

AN XY:

135890

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS 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:

6.84e-7

AC:

AN:

1461802

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727204

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000224

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:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Bravo

AF:

0.00000378

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: no assertion criteria provided

LINK: link

Submissions by phenotype

SEMA3A-related disorder

Uncertain:1

Dec 18, 2023

PreventionGenetics, part of Exact Sciences

Significance: Uncertain significance

Review Status: no assertion criteria provided

Collection Method: clinical testing

The SEMA3A c.2267G>A variant is predicted to result in the amino acid substitution p.Gly756Asp. To our knowledge, this variant has not been reported in the literature. This variant is reported in 0.0029% of alleles in individuals of Latino descent in gnomAD. At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.85

BayesDel_addAF

Benign

-0.051

BayesDel_noAF

Benign

-0.23

CADD

Uncertain

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.48

T;T

Eigen

Uncertain

0.55

Eigen_PC

Uncertain

0.56

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Uncertain

0.95

.;D

M_CAP

Benign

0.015

MetaRNN

Benign

0.38

T;T

MetaSVM

Benign

-0.99

MutationAssessor

Uncertain

2.7

M;M

PrimateAI

Pathogenic

0.89

PROVEAN

Benign

-1.8

N;N

REVEL

Benign

0.17

Sift

Benign

0.41

T;T

Sift4G

Benign

0.63

T;T

Polyphen

0.97

D;D

Vest4

0.48

MutPred

0.34

Gain of glycosylation at K754 (P = 0.1146);Gain of glycosylation at K754 (P = 0.1146);

MVP

0.53

MPC

0.98

ClinPred

0.88

GERP RS

4.2

Varity_R

0.15

gMVP

0.50

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