4-89711617-G-T

Position:

• chr4-89711617-G-T

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The ENST00000673902.1(SNCA):​c.391-9233C>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.724 in 151,994 control chromosomes in the GnomAD database, including 40,173 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.72 (40173 hom., cov: 32)
• Consequence: SNCA ENST00000673902.1 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.178

Genes affected

SNCA (HGNC:11138): (synuclein alpha) Alpha-synuclein is a member of the synuclein family, which also includes beta- and gamma-synuclein. Synucleins are abundantly expressed in the brain and alpha- and beta-synuclein inhibit phospholipase D2 selectively. SNCA may serve to integrate presynaptic signaling and membrane trafficking. Defects in SNCA have been implicated in the pathogenesis of Parkinson disease. SNCA peptides are a major component of amyloid plaques in the brains of patients with Alzheimer's disease. Alternatively spliced transcripts encoding different isoforms have been identified for this gene. [provided by RefSeq, Feb 2016]

ENSG00000251095 (HGNC:):

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.97).
• BA1: GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.911 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
LOC124900602	XR_007058466.1	n.9902-8209G>T		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SNCA	ENST00000673902.1	c.391-9233C>A		intron_variant				ENSP00000501102.1
ENSG00000251095	ENST00000507916.6	n.256-8209G>T		intron_variant		3
ENSG00000251095	ENST00000508021.5	n.448-14767G>T		intron_variant		4

Frequencies

GnomAD3 genomes AF: 0.724 AC: 109968 AN: 151876 Hom.: 40150 Cov.: 32

Gnomad AFR AF: 0.775

Gnomad AMI AF: 0.653

Gnomad AMR AF: 0.774

Gnomad ASJ AF: 0.661

Gnomad EAS AF: 0.932

Gnomad SAS AF: 0.806

Gnomad FIN AF: 0.679

Gnomad MID AF: 0.677

Gnomad NFE AF: 0.672

Gnomad OTH AF: 0.697

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.724 AC: 110042 AN: 151994 Hom.: 40173 Cov.: 32 AF XY: 0.727 AC XY: 54007 AN XY: 74270

Gnomad4 AFR AF: 0.775

Gnomad4 AMR AF: 0.774

Gnomad4 ASJ AF: 0.661

Gnomad4 EAS AF: 0.933

Gnomad4 SAS AF: 0.804

Gnomad4 FIN AF: 0.679

Gnomad4 NFE AF: 0.672

Gnomad4 OTH AF: 0.694

Alfa AF: 0.688 Hom.: 4509

Bravo AF: 0.731

Asia WGS AF: 0.835 AC: 2886 AN: 3458

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.97
CADD	Benign	0.77
DANN	Benign	0.21

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs356169; hg19: chr4-90632768;