Genetic Variant SYNPO2L:p.Arg479Leu (chr10-73648216-C-A) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 4P and 2B. PM1PM2BP4_Moderate

The NM_001114133.3(SYNPO2L):c.1436G>T(p.Arg479Leu) variant causes a missense change. The variant allele was found at a frequency of 0.0000519 in 1,580,470 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00030 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000025 ( 0 hom. )

Consequence

SYNPO2L
NM_001114133.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.16

Variant links:

Genes affected

SYNPO2L (HGNC:23532): (synaptopodin 2 like) Predicted to enable actin binding activity. Predicted to be involved in several processes, including positive regulation of Rho protein signal transduction; positive regulation of stress fiber assembly; and sarcomere organization. Located in cell junction; cytosol; and nuclear speck. [provided by Alliance of Genome Resources, Apr 2022]

SYNPO2L links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM1

In a modified_residue Omega-N-methylarginine (size 0) in uniprot entity SYP2L_HUMAN

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.18257612).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SYNPO2L	NM_001114133.3 link	c.1436G>T	p.Arg479Leu	missense_variant	Exon 4 of 4	ENST00000394810.3	NP_001107605.1	Q9H987-1
SYNPO2L	NM_024875.5 link	c.764G>T	p.Arg255Leu	missense_variant	Exon 2 of 2		NP_079151.2	Q9H987-2A0A024QZQ8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SYNPO2L	ENST00000394810.3 link	c.1436G>T	p.Arg479Leu	missense_variant	Exon 4 of 4	1	NM_001114133.3	ENSP00000378289.2		Q9H987-1
SYNPO2L	ENST00000372873.8 link	c.764G>T	p.Arg255Leu	missense_variant	Exon 2 of 2	1		ENSP00000361964.4		Q9H987-2

Frequencies

GnomAD3 genomes

AF:

0.000302

AC:

AN:

152166

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00109

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

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:

0.0000981

AC:

AN:

224362

Hom.:

AF XY:

0.0000650

AC XY:

AN XY:

123076

show subpopulations

Gnomad AFR exome

AF:

0.00139

Gnomad AMR exome

AF:

0.0000613

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:

0.0000252

AC:

AN:

1428304

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

707610

show subpopulations

Gnomad4 AFR exome

AF:

0.000910

Gnomad4 AMR exome

AF:

0.0000233

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000119

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000677

GnomAD4 genome

AF:

0.000302

AC:

AN:

152166

Hom.:

Cov.:

AF XY:

0.000350

AC XY:

AN XY:

74336

show subpopulations

Gnomad4 AFR

AF:

0.00109

Gnomad4 AMR

AF:

0.0000654

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

Alfa

AF:

0.0000185

Hom.:

Bravo

AF:

0.000385

ESP6500AA

AF:

0.000921

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000827

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Nov 13, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1436G>T (p.R479L) alteration is located in exon 4 (coding exon 4) of the SYNPO2L gene. This alteration results from a G to T substitution at nucleotide position 1436, causing the arginine (R) at amino acid position 479 to be replaced by a leucine (L). 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

0.18

BayesDel_addAF

Benign

-0.38

BayesDel_noAF

Benign

-0.36

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.085

.;T

Eigen

Uncertain

0.43

Eigen_PC

Uncertain

0.35

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Uncertain

0.89

D;D

M_CAP

Benign

0.040

MetaRNN

Benign

0.18

T;T

MetaSVM

Benign

-0.90

MutationAssessor

Uncertain

2.2

.;M

PrimateAI

Uncertain

0.49

PROVEAN

Uncertain

-3.0

D;D

REVEL

Benign

0.20

Sift

Uncertain

0.0070

D;D

Sift4G

Uncertain

0.0090

D;D

Polyphen

1.0

D;D

Vest4

0.61

MVP

0.77

MPC

1.3

ClinPred

0.21

GERP RS

4.2

Varity_R

0.40

gMVP

0.71

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