chr3-8985530-C-T

Position:

• chr3-8985530-C-T

Variant summary

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

The NM_014850.4(SRGAP3):​c.3289G>A​(p.Gly1097Ser) 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. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: SRGAP3 NM_014850.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.37

Genes affected

SRGAP3 (HGNC:19744): (SLIT-ROBO Rho GTPase activating protein 3) Predicted to enable GTPase activator activity. Predicted to be involved in negative regulation of cell migration. Predicted to be located in cytosol. Predicted to be active in cytoplasm. [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=0.18800524).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SRGAP3	NM_014850.4	c.3289G>A	p.Gly1097Ser	missense_variant	22/22	ENST00000383836.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SRGAP3	ENST00000383836.8	c.3289G>A	p.Gly1097Ser	missense_variant	22/22	1	NM_014850.4	P1
SRGAP3	ENST00000360413.7	c.3217G>A	p.Gly1073Ser	missense_variant	22/22	1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.00000431 AC: 1 AN: 232254 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 126752

Gnomad AFR exome AF: 0.00

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: 0.000170

GnomAD4 exome Cov.: 30

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

Mar 31, 2024

The c.3289G>A (p.G1097S) alteration is located in exon 22 (coding exon 22) of the SRGAP3 gene. This alteration results from a G to A substitution at nucleotide position 3289, causing the glycine (G) at amino acid position 1097 to be replaced by a serine (S). 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	0.10
BayesDel_addAF	Benign	-0.22	T
BayesDel_noAF	Benign	-0.45
CADD	Benign	23
DANN	Uncertain	0.99
DEOGEN2	Benign	0.095	T;.
Eigen	Uncertain	0.37
Eigen_PC	Uncertain	0.41
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.92	D;D
M_CAP	Benign	0.025	T
MetaRNN	Benign	0.19	T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	-0.69	N;.
MutationTaster	Benign	1.0	D;D
PrimateAI	Uncertain	0.70	T
PROVEAN	Benign	-0.27	N;N
REVEL	Benign	0.14
Sift	Benign	0.51	T;T
Sift4G	Benign	0.55	T;T
Polyphen		1.0	D;D
Vest4		0.24
MutPred		0.20		Gain of phosphorylation at G1097 (P = 0.0068);.;
MVP		0.21
MPC		0.57
ClinPred		0.33	T
GERP RS		5.2
Varity_R		0.11
gMVP		0.36

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

Other links and lift over

dbSNP: rs1477325567; hg19: chr3-9027214;