4-119027238-G-A

Position:

• chr4-119027238-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_133477.3(SYNPO2):​c.869G>A​(p.Cys290Tyr) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: SYNPO2 NM_133477.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.99

Genes affected

SYNPO2 (HGNC:17732): (synaptopodin 2) Enables alpha-actinin binding activity and filamin binding activity. Involved in positive regulation of actin filament bundle assembly; positive regulation of cell migration; and regulation of Rho-dependent protein serine/threonine kinase activity. Located in several cellular components, including Z disc; focal adhesion; and stress fiber. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.16193107).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SYNPO2	NM_133477.3	c.869G>A	p.Cys290Tyr	missense_variant	3/5	ENST00000307142.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SYNPO2	ENST00000307142.9	c.869G>A	p.Cys290Tyr	missense_variant	3/5	1	NM_133477.3	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 34

GnomAD4 genome Cov.: 32

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

Jan 27, 2022

The c.869G>A (p.C290Y) alteration is located in exon 3 (coding exon 3) of the SYNPO2 gene. This alteration results from a G to A substitution at nucleotide position 869, causing the cysteine (C) at amino acid position 290 to be replaced by a tyrosine (Y). 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	0.16
BayesDel_addAF	Pathogenic	0.18	D
BayesDel_noAF	Uncertain	0.020
CADD	Uncertain	24
DANN	Benign	0.97
DEOGEN2	Benign	0.044	.;.;T;.
Eigen	Benign	0.015
Eigen_PC	Benign	0.19
FATHMM_MKL	Uncertain	0.91	D
LIST_S2	Uncertain	0.90	D;D;D;D
M_CAP	Benign	0.014	T
MetaRNN	Benign	0.16	T;T;T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	1.0	.;L;L;L
MutationTaster	Benign	1.0	D;D;D;D
PrimateAI	Uncertain	0.56	T
PROVEAN	Benign	-1.7	.;N;N;N
REVEL	Benign	0.23
Sift	Pathogenic	0.0	.;D;D;D
Sift4G	Uncertain	0.016	D;D;D;D
Polyphen		0.028, 0.034	.;B;B;.
Vest4		0.31
MutPred		0.35		.;Gain of phosphorylation at C290 (P = 0.0245);Gain of phosphorylation at C290 (P = 0.0245);Gain of phosphorylation at C290 (P = 0.0245);
MVP		0.28
MPC		0.20
ClinPred		0.86	D
GERP RS		4.7
Varity_R		0.61
gMVP		0.47

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		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: chr4-119948393;