3-126988624-C-T

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 2P and 3B. PM2BP4_ModerateBS1_Supporting

The NM_032242.4(PLXNA1):c.31C>T(p.Leu11Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000153 in 1,569,060 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (no stars). Synonymous variant affecting the same amino acid position (i.e. L11L) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000079 ( 0 hom., cov: 34)

Exomes 𝑓: 0.0000085 ( 0 hom. )

Consequence

PLXNA1
NM_032242.4 missense

Scores

Clinical Significance

Uncertain significance no assertion criteria provided U:1

Conservation

PhyloP100: 1.86

Variant links:

Genes affected

PLXNA1 (HGNC:9099): (plexin A1) Predicted to enable semaphorin receptor activity. Predicted to be involved in several processes, including generation of neurons; regulation of GTPase activity; and regulation of cell shape. Predicted to act upstream of or within dichotomous subdivision of terminal units involved in salivary gland branching; neuron projection morphogenesis; and regulation of smooth muscle cell migration. Located in cytosol and nucleoplasm. [provided by Alliance of Genome Resources, Apr 2022]

PLXNA1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.07477766).

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.0000788 (12/152256) while in subpopulation AFR AF= 0.000289 (12/41476). AF 95% confidence interval is 0.000167. There are 0 homozygotes in gnomad4. There are 8 alleles in male gnomad4 subpopulation. Median coverage is 34. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PLXNA1	NM_032242.4 link	c.31C>T	p.Leu11Phe	missense_variant	Exon 2 of 32	ENST00000393409.3	NP_115618.3	Q9UIW2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PLXNA1	ENST00000393409.3 link	c.31C>T	p.Leu11Phe	missense_variant	Exon 2 of 32	1	NM_032242.4	ENSP00000377061.2		Q9UIW2
PLXNA1	ENST00000684469.1 link	c.31C>T	p.Leu11Phe	missense_variant	Exon 2 of 2			ENSP00000507976.1		A0A804HKL4

Frequencies

GnomAD3 genomes

AF:

0.0000788

AC:

AN:

152256

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000289

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:

0.00

GnomAD3 exomes

AF:

0.0000150

AC:

AN:

200534

Hom.:

AF XY:

0.00000920

AC XY:

AN XY:

108688

show subpopulations

Gnomad AFR exome

AF:

0.000230

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS 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:

0.00000847

AC:

AN:

1416804

Hom.:

Cov.:

AF XY:

0.00000571

AC XY:

AN XY:

700330

show subpopulations

Gnomad4 AFR exome

AF:

0.000307

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000342

GnomAD4 genome

AF:

0.0000788

AC:

AN:

152256

Hom.:

Cov.:

AF XY:

0.000108

AC XY:

AN XY:

74380

show subpopulations

Gnomad4 AFR

AF:

0.000289

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.000125

ExAC

AF:

0.00000832

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: no assertion criteria provided

LINK: link

Submissions by phenotype

PLXNA1-related disorder

Uncertain:1

Mar 15, 2024

PreventionGenetics, part of Exact Sciences

Significance: Uncertain significance

Review Status: no assertion criteria provided

Collection Method: clinical testing

The PLXNA1 c.31C>T variant is predicted to result in the amino acid substitution p.Leu11Phe. To our knowledge, this variant has not been reported in the literature. This variant is reported in 0.028% of alleles in individuals of African descent in gnomAD. At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.059

BayesDel_addAF

Benign

-0.26

BayesDel_noAF

Benign

-0.61

CADD

Benign

5.5

DANN

Benign

0.72

DEOGEN2

Benign

0.12

Eigen

Benign

-0.84

Eigen_PC

Benign

-0.92

FATHMM_MKL

Benign

0.38

LIST_S2

Benign

0.38

M_CAP

Uncertain

0.11

MetaRNN

Benign

0.075

MetaSVM

Benign

-0.93

MutationAssessor

Benign

0.0

PrimateAI

Uncertain

0.56

PROVEAN

Benign

-0.68

REVEL

Benign

0.070

Sift

Benign

0.24

Sift4G

Benign

0.32

Vest4

0.15

MutPred

0.53

Loss of helix (P = 0.0167);

MVP

0.17

MPC

0.95

ClinPred

0.018

GERP RS

1.5

Varity_R

0.052

gMVP

0.51

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over