rs760922596

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BP4_StrongBS1_Supporting

The NM_032242.4(PLXNA1):c.17G>A(p.Arg6Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000654 in 1,543,470 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 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. R6W) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 34)

Exomes 𝑓: 0.000069 ( 0 hom. )

Consequence

PLXNA1
NM_032242.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:2

Conservation

PhyloP100: -0.212

Publications

1 publications found

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 Gene-Disease associations (from GenCC):

Dworschak-Punetha neurodevelopmental syndrome
Inheritance: AR Classification: STRONG, LIMITED Submitted by: G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics
complex neurodevelopmental disorder
Inheritance: AD Classification: LIMITED Submitted by: G2P

PLXNA1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -5 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.064486146).

BS1

Variant frequency is greater than expected in population eas. GnomAdExome4 allele frequency = 0.000069 (96/1391112) while in subpopulation EAS AF = 0.000892 (34/38096). AF 95% confidence interval is 0.000656. There are 0 homozygotes in GnomAdExome4. There are 55 alleles in the male GnomAdExome4 subpopulation. Median coverage is 32. This position passed quality control check. 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.17G>A	p.Arg6Gln	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.17G>A	p.Arg6Gln	missense_variant	Exon 2 of 32	1	NM_032242.4	ENSP00000377061.2		Q9UIW2
PLXNA1	ENST00000684469.1 link	c.17G>A	p.Arg6Gln	missense_variant	Exon 2 of 2			ENSP00000507976.1		A0A804HKL4

Frequencies

GnomAD3 genomes

AF:

0.0000328

AC:

AN:

152240

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000385

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000760

AC:

AN:

171092

AF XY:

0.0000864

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000479

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000525

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000690

AC:

AN:

1391112

Hom.:

Cov.:

AF XY:

0.0000803

AC XY:

AN XY:

685236

show subpopulations

African (AFR)

AF:

0.0000315

AC:

AN:

31754

American (AMR)

AF:

0.00

AC:

AN:

35846

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

22112

East Asian (EAS)

AF:

0.000892

AC:

AN:

38096

South Asian (SAS)

AF:

0.0000934

AC:

AN:

74942

European-Finnish (FIN)

AF:

0.00

AC:

AN:

46554

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5424

European-Non Finnish (NFE)

AF:

0.0000445

AC:

AN:

1078896

Other (OTH)

AF:

0.000104

AC:

AN:

57488

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.478

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.0000328

AC:

AN:

152358

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74496

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41586

American (AMR)

AF:

0.00

AC:

AN:

15306

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.000386

AC:

AN:

5186

South Asian (SAS)

AF:

0.00

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10626

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000441

AC:

AN:

68034

Other (OTH)

AF:

0.00

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.505

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.000142

Hom.:

Bravo

AF:

0.0000302

ExAC

AF:

0.0000753

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Feb 15, 2023

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.17G>A (p.R6Q) alteration is located in exon 1 (coding exon 1) of the PLXNA1 gene. This alteration results from a G to A substitution at nucleotide position 17, causing the arginine (R) at amino acid position 6 to be replaced by a glutamine (Q). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

PLXNA1-related disorder

Uncertain:1

Aug 09, 2024

PreventionGenetics, part of Exact Sciences

Significance:Uncertain significance

Review Status:no assertion criteria provided

Collection Method:clinical testing

The PLXNA1 c.17G>A variant is predicted to result in the amino acid substitution p.Arg6Gln. To our knowledge, this variant has not been reported in the literature. This variant is reported in 0.043% of alleles in individuals of East Asian 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

0.12

BayesDel_addAF

Benign

-0.58

BayesDel_noAF

Benign

-0.73

CADD

Benign

3.6

(source)

DANN

Benign

0.87

DEOGEN2

Benign

0.096

Eigen

Benign

-0.75

Eigen_PC

Benign

-0.81

FATHMM_MKL

Benign

0.20

LIST_S2

Benign

0.46

M_CAP

Benign

0.012

MetaRNN

Benign

0.064

MetaSVM

Benign

-0.98

MutationAssessor

Benign

0.0

PhyloP100

-0.21

PrimateAI

Benign

0.42

PROVEAN

Benign

-0.44

REVEL

Benign

0.028

Sift

Benign

0.40

Sift4G

Benign

0.43

Vest4

0.044

MutPred

0.20

Loss of methylation at R6 (P = 0.0813);

MVP

0.35

MPC

0.49

ClinPred

0.012

GERP RS

-0.53

Varity_R

0.020

gMVP

0.42

Mutation Taster

=97/3

polymorphism

(source)

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

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rs760922596

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over