NM_017893.4:c.50C>A

Variant names:

• chr10-100972962-C-A
• rs768000743
• NM_017893.4:c.50C>A

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_017893.4(SEMA4G):​c.50C>A​(p.Ala17Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000233 in 1,461,320 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 0.000023 (0 hom.)
• Consequence: SEMA4G NM_017893.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.934
• Publications: 0 publications found

Genes affected

SEMA4G (HGNC:10735): (semaphorin 4G) Semaphorins are a large family of conserved secreted and membrane associated proteins which possess a semaphorin (Sema) domain and a PSI domain (found in plexins, semaphorins and integrins) in the N-terminal extracellular portion. Based on sequence and structural similarities, semaphorins are put into eight classes: invertebrates contain classes 1 and 2, viruses have class V, and vertebrates contain classes 3-7. Semaphorins serve as axon guidance ligands via multimeric receptor complexes, some (if not all) containing plexin proteins. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Feb 2011]

MRPL43 (HGNC:14517): (mitochondrial ribosomal protein L43) Mammalian mitochondrial ribosomal proteins are encoded by nuclear genes and help in protein synthesis within the mitochondrion. Mitochondrial ribosomes (mitoribosomes) consist of a small 28S subunit and a large 39S subunit. They have an estimated 75% protein to rRNA composition compared to prokaryotic ribosomes, where this ratio is reversed. Another difference between mammalian mitoribosomes and prokaryotic ribosomes is that the latter contain a 5S rRNA. Among different species, the proteins comprising the mitoribosome differ greatly in sequence, and sometimes in biochemical properties, which prevents easy recognition by sequence homology. This gene encodes a 39S subunit protein. This gene and the gene for a semaphorin class 4 protein (SEMA4G) overlap at map location 10q24.31 and are transcribed in opposite directions. Sequence analysis identified multiple transcript variants encoding at least four different protein isoforms. [provided by RefSeq, Jul 2008]

ACMG classification

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

• BP4: Computational evidence support a benign effect (MetaRNN=0.22131923).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_017893.4. 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
	SEMA4G	NM_017893.4	MANE Select	c.50C>A	p.Ala17Glu	missense	Exon 2 of 15	NP_060363.2
	SEMA4G	NM_001393925.1		c.50C>A	p.Ala17Glu	missense	Exon 2 of 15	NP_001380854.1	Q9NTN9-1
	SEMA4G	NM_001203244.1		c.50C>A	p.Ala17Glu	missense	Exon 1 of 14	NP_001190173.1	Q9NWU8

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SEMA4G	ENST00000210633.4	TSL:1 MANE Select	c.50C>A	p.Ala17Glu	missense	Exon 2 of 15	ENSP00000210633.3	Q9NTN9-2
	SEMA4G	ENST00000517724.5	TSL:1	c.50C>A	p.Ala17Glu	missense	Exon 1 of 14	ENSP00000430175.1	Q9NTN9-3
	SEMA4G	ENST00000521006.5	TSL:1	n.50C>A		non_coding_transcript_exon	Exon 2 of 16	ENSP00000430881.1	Q9NTN9-1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD2 exomes AF: 0.0000439 AC: 11 AN: 250832 AF XY: 0.0000737

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS 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: 0.0000233 AC: 34 AN: 1461320 Hom.: 0 Cov.: 31 AF XY: 0.0000316 AC XY: 23 AN XY: 726976

African (AFR) AF: 0.00 AC: 0 AN: 33448

American (AMR) AF: 0.00 AC: 0 AN: 44538

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26104

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

South Asian (SAS) AF: 0.000394 AC: 34 AN: 86186

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53412

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111798

Other (OTH) AF: 0.00 AC: 0 AN: 60366

GnomAD4 genome Cov.: 31

ExAC AF: 0.0000330 AC: 4

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	0.29
BayesDel_addAF	Benign	-0.14	T
BayesDel_noAF	Benign	-0.13
CADD	Benign	21
DANN	Benign	0.97
DEOGEN2	Benign	0.035	T
Eigen	Benign	-0.37
Eigen_PC	Benign	-0.36
FATHMM_MKL	Benign	0.71	D
LIST_S2	Benign	0.75	T
M_CAP	Benign	0.031	D
MetaRNN	Benign	0.22	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.81	L
PhyloP100		0.93
PrimateAI	Uncertain	0.60	T
PROVEAN	Benign	-1.8	N
REVEL	Benign	0.19
Sift	Uncertain	0.010	D
Sift4G	Benign	0.14	T
Polyphen		0.54	P
Vest4		0.78
MutPred		0.56		Loss of loop (P = 0.0235)
MVP		0.77
MPC		0.51
ClinPred		0.094	T
GERP RS		4.8
PromoterAI		-0.0026	Neutral
Varity_R		0.31
gMVP		0.59
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: rs768000743; hg19: chr10-102732719;