5-116446708-G-C

Position:

• chr5-116446708-G-C

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_020796.5(SEMA6A):​c.2998C>G​(p.Leu1000Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 13/19 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: SEMA6A NM_020796.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.611

Genes affected

SEMA6A (HGNC:10738): (semaphorin 6A) Predicted to enable identical protein binding activity; signaling receptor binding activity; and transmembrane signaling receptor activity. Involved in cellular response to vascular endothelial growth factor stimulus; negative regulation of cell adhesion involved in sprouting angiogenesis; and negative regulation of signal transduction. Predicted to be integral component of membrane. Predicted to be active in extracellular space. Predicted to be integral component of plasma membrane. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.082957566).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SEMA6A	NM_020796.5	c.2998C>G	p.Leu1000Val	missense_variant	19/19	ENST00000343348.11	NP_065847.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SEMA6A	ENST00000343348.11	c.2998C>G	p.Leu1000Val	missense_variant	19/19	1	NM_020796.5	ENSP00000345512.6

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

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

Aug 08, 2022

The c.2998C>G (p.L1000V) alteration is located in exon 19 (coding exon 18) of the SEMA6A gene. This alteration results from a C to G substitution at nucleotide position 2998, causing the leucine (L) at amino acid position 1000 to be replaced by a valine (V). 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	Benign	0.065
BayesDel_addAF	Benign	-0.19	T
BayesDel_noAF	Benign	-0.51
CADD	Benign	17
DANN	Benign	0.95
DEOGEN2	Benign	0.0064	.;T;T;.;.
Eigen	Benign	-0.46
Eigen_PC	Benign	-0.27
FATHMM_MKL	Benign	0.66	D
LIST_S2	Uncertain	0.87	.;D;D;D;.
M_CAP	Benign	0.0035	T
MetaRNN	Benign	0.083	T;T;T;T;T
MetaSVM	Benign	-1.1	T
PrimateAI	Uncertain	0.53	T
PROVEAN	Benign	-0.59	N;N;N;N;N
REVEL	Benign	0.052
Sift	Benign	0.28	T;T;T;T;T
Sift4G	Benign	0.80	T;T;T;T;T
Polyphen		0.0020, 0.0010	.;.;B;B;.
Vest4		0.053
MutPred		0.10		Loss of stability (P = 0.0777);.;.;.;Loss of stability (P = 0.0777);
MVP		0.17
MPC		0.20
ClinPred		0.22	T
GERP RS		3.5
gMVP		0.18

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: chr5-115782404;