3-50269320-G-C

Variant names:

• chr3-50269320-G-C
• rs1575465798
• NM_001290060.2:c.80G>C

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001290060.2(SEMA3B):​c.80G>C​(p.Ser27Thr) 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. 9/13 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. S27R) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: SEMA3B NM_001290060.2 missense
• Clinical Significance: Uncertain significance no assertion criteria provided U:1
• Conservation: PhyloP100: 0.120
• Publications: 0 publications found

Genes affected

SEMA3B (HGNC:10724): (semaphorin 3B) The protein encoded by this gene belongs to the class-3 semaphorin/collapsin family, whose members function in growth cone guidance during neuronal development. This family member inhibits axonal extension and has been shown to act as a tumor suppressor by inducing apoptosis. Alternative splicing of this gene results in multiple transcript variants. [provided by RefSeq, Feb 2014]

SEMA3B-AS1 (HGNC:49096): (SEMA3B antisense RNA 1 (head to head))

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.12280449).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001290060.2. 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
	SEMA3B	NM_001290060.2	MANE Select	c.80G>C	p.Ser27Thr	missense	Exon 1 of 17	NP_001276989.1	Q13214-1
	SEMA3B	NM_001290061.1		c.80G>C	p.Ser27Thr	missense	Exon 1 of 17	NP_001276990.1	Q13214
	SEMA3B	NM_001435956.1		c.80G>C	p.Ser27Thr	missense	Exon 4 of 20	NP_001422885.1	Q13214-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SEMA3B	ENST00000616701.5	TSL:1 MANE Select	c.80G>C	p.Ser27Thr	missense	Exon 1 of 17	ENSP00000484146.1	Q13214-1
	SEMA3B	ENST00000611067.4	TSL:1	c.80G>C	p.Ser27Thr	missense	Exon 1 of 17	ENSP00000480680.1	A0A0C4DGV8
	SEMA3B	ENST00000433753.4	TSL:1	c.80G>C	p.Ser27Thr	missense	Exon 1 of 17	ENSP00000485281.1	Q13214-2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD2 exomes AF: 0.00 AC: 0 AN: 111490 AF XY: 0.00

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 Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1364142 Hom.: 0 Cov.: 30 AF XY: 0.00 AC XY: 0 AN XY: 672968

African (AFR) AF: 0.00 AC: 0 AN: 29840

American (AMR) AF: 0.00 AC: 0 AN: 27942

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 23568

East Asian (EAS) AF: 0.00 AC: 0 AN: 35530

South Asian (SAS) AF: 0.00 AC: 0 AN: 76168

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 39412

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5220

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1069890

Other (OTH) AF: 0.00 AC: 0 AN: 56572

GnomAD4 genome Cov.: 33

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: no assertion criteria provided

Pathogenic	VUS	Benign	Condition
-	1	-	SEMA3B-related disorder (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.084
BayesDel_addAF	Benign	-0.041	T
BayesDel_noAF	Benign	-0.30
CADD	Benign	13
DANN	Benign	0.75
DEOGEN2	Benign	0.059	T
Eigen	Benign	-0.26
Eigen_PC	Benign	-0.28
FATHMM_MKL	Benign	0.48	N
LIST_S2	Benign	0.56	T
MetaRNN	Benign	0.12	T
MetaSVM	Benign	-0.98	T
PhyloP100		0.12
Sift4G	Benign	0.73	T
Vest4		0.18
MVP		0.35
ClinPred		0.13	T
GERP RS		3.1
PromoterAI		-0.15	Neutral
gMVP		0.34

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs1575465798; hg19: chr3-50306752;