5-116446915-C-T

Variant names:

• chr5-116446915-C-T
• rs199858026
• NM_020796.5:c.2791G>A

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_020796.5(SEMA6A):​c.2791G>A​(p.Ala931Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000372 in 1,613,846 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A931P) has been classified as Likely benign.

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 32)
  • Exomes 𝑓: 0.0000034 (0 hom.)
• Consequence: SEMA6A NM_020796.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.114
• Publications: 5 publications found

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]

SEMA6A-AS1 (HGNC:51110): (SEMA6A antisense RNA 1)

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.035081744).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_020796.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SEMA6A	NM_020796.5	MANE Select	c.2791G>A	p.Ala931Thr	missense	Exon 19 of 19	NP_065847.1	Q9H2E6-1
	SEMA6A	NM_001300780.2		c.2842G>A	p.Ala948Thr	missense	Exon 20 of 20	NP_001287709.1	Q9H2E6-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SEMA6A	ENST00000343348.11	TSL:1 MANE Select	c.2791G>A	p.Ala931Thr	missense	Exon 19 of 19	ENSP00000345512.6	Q9H2E6-1
	SEMA6A	ENST00000257414.12	TSL:1	c.2842G>A	p.Ala948Thr	missense	Exon 20 of 20	ENSP00000257414.8	Q9H2E6-2
	SEMA6A	ENST00000510263.5	TSL:1	c.2791G>A	p.Ala931Thr	missense	Exon 19 of 19	ENSP00000424388.1	Q9H2E6-1

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152134 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

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: 0.00

Gnomad OTH AF: 0.000479

GnomAD4 exome AF: 0.00000342 AC: 5 AN: 1461712 Hom.: 0 Cov.: 31 AF XY: 0.00000275 AC XY: 2 AN XY: 727138

African (AFR) AF: 0.0000597 AC: 2 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53402

Middle Eastern (MID) AF: 0.000173 AC: 1 AN: 5768

European-Non Finnish (NFE) AF: 8.99e-7 AC: 1 AN: 1111870

Other (OTH) AF: 0.0000166 AC: 1 AN: 60374

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152134 Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1 AN XY: 74326

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 41432

American (AMR) AF: 0.00 AC: 0 AN: 15280

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5168

South Asian (SAS) AF: 0.00 AC: 0 AN: 4824

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10616

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68026

Other (OTH) AF: 0.000479 AC: 1 AN: 2088

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000756

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.065
BayesDel_addAF	Benign	-0.26	T
BayesDel_noAF	Benign	-0.62
CADD	Benign	12
DANN	Benign	0.86
DEOGEN2	Benign	0.0099	T
Eigen	Benign	-0.91
Eigen_PC	Benign	-0.68
FATHMM_MKL	Benign	0.50	D
LIST_S2	Benign	0.74	T
M_CAP	Benign	0.0056	T
MetaRNN	Benign	0.035	T
MetaSVM	Benign	-0.96	T
PhyloP100		-0.11
PrimateAI	Benign	0.40	T
PROVEAN	Benign	-0.39	N
REVEL	Benign	0.076
Sift	Benign	0.56	T
Sift4G	Benign	0.60	T
Polyphen		0.0030	B
Vest4		0.085
MutPred		0.11		Gain of methylation at K935 (P = 0.0943)
MVP		0.18
MPC		0.19
ClinPred		0.35	T
GERP RS		2.1
gMVP		0.21
Mutation Taster		=79/21	polymorphism

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

Other links and lift over

dbSNP: rs199858026; hg19: chr5-115782611;