12-94149657-C-G

Position:

• chr12-94149657-C-G

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_005761.3(PLXNC1):​c.686C>G​(p.Ala229Gly) 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. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: PLXNC1 NM_005761.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.0570

Genes affected

PLXNC1 (HGNC:9106): (plexin C1) This gene encodes a member of the plexin family. Plexins are transmembrane receptors for semaphorins, a large family of proteins that regulate axon guidance, cell motility and migration, and the immune response. The encoded protein and its ligand regulate melanocyte adhesion, and viral semaphorins may modulate the immune response by binding to this receptor. The encoded protein may be a tumor suppressor protein for melanoma. Alternatively spliced transcript variants have been observed for this gene. [provided by RefSeq, Jan 2011]

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.057521135).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PLXNC1	NM_005761.3	c.686C>G	p.Ala229Gly	missense_variant	1/31	ENST00000258526.9	NP_005752.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PLXNC1	ENST00000258526.9	c.686C>G	p.Ala229Gly	missense_variant	1/31	1	NM_005761.3	ENSP00000258526	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 33

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

Apr 07, 2023

The c.686C>G (p.A229G) alteration is located in exon 1 (coding exon 1) of the PLXNC1 gene. This alteration results from a C to G substitution at nucleotide position 686, causing the alanine (A) at amino acid position 229 to be replaced by a glycine (G). 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	0.066
BayesDel_addAF	Benign	-0.30	T
BayesDel_noAF	Benign	-0.66
CADD	Benign	17
DANN	Benign	0.97
DEOGEN2	Benign	0.050	T
Eigen	Benign	-0.83
Eigen_PC	Benign	-0.76
FATHMM_MKL	Benign	0.022	N
LIST_S2	Benign	0.60	T
M_CAP	Benign	0.046	D
MetaRNN	Benign	0.058	T
MetaSVM	Benign	-0.95	T
MutationAssessor	Benign	0.14	N
MutationTaster	Benign	1.0	N
PrimateAI	Benign	0.41	T
PROVEAN	Benign	-1.1	N
REVEL	Benign	0.061
Sift	Benign	0.28	T
Sift4G	Benign	0.41	T
Polyphen		0.0	B
Vest4		0.067
MutPred		0.39		Gain of disorder (P = 0.1047);
MVP		0.082
MPC		1.3
ClinPred		0.053	T
GERP RS		0.63
Varity_R		0.48
gMVP		0.68

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: chr12-94543433;