5-176629555-T-C

Position:

• chr5-176629555-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_003085.5(SNCB):​c.100A>G​(p.Lys34Glu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: SNCB NM_003085.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.99

Genes affected

SNCB (HGNC:11140): (synuclein beta) This gene encodes a member of a small family of proteins that inhibit phospholipase D2 and may function in neuronal plasticity. The encoded protein is abundant in lesions of patients with Alzheimer disease. A mutation in this gene was found in individuals with dementia with Lewy bodies. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Dec 2015]

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.896

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SNCB	NM_003085.5	c.100A>G	p.Lys34Glu	missense_variant	2/6	ENST00000393693.7	NP_003076.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SNCB	ENST00000393693.7	c.100A>G	p.Lys34Glu	missense_variant	2/6	1	NM_003085.5	ENSP00000377296	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

Lewy body dementia Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Centogene AG - the Rare Disease Company

Dec 02, 2020

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.96
BayesDel_addAF	Pathogenic	0.30	D
BayesDel_noAF	Pathogenic	0.20
CADD	Pathogenic	28
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.96	D;D;D;D;D
Eigen	Uncertain	0.61
Eigen_PC	Uncertain	0.52
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Pathogenic	0.98	.;D;.;.;D
M_CAP	Pathogenic	0.32	D
MetaRNN	Pathogenic	0.90	D;D;D;D;D
MetaSVM	Uncertain	0.62	D
MutationAssessor	Uncertain	2.7	M;.;M;M;M
MutationTaster	Benign	1.0	D;D;D;D
PrimateAI	Uncertain	0.76	T
PROVEAN	Uncertain	-3.7	D;.;D;D;D
REVEL	Pathogenic	0.86
Sift	Pathogenic	0.0	D;.;D;D;D
Sift4G	Uncertain	0.0030	D;D;D;D;D
Polyphen		0.92	P;.;P;P;P
Vest4		0.87
MutPred		0.54		Loss of ubiquitination at K34 (P = 0.003);Loss of ubiquitination at K34 (P = 0.003);Loss of ubiquitination at K34 (P = 0.003);Loss of ubiquitination at K34 (P = 0.003);Loss of ubiquitination at K34 (P = 0.003);
MVP		0.94
MPC		1.0
ClinPred		1.0	D
GERP RS		3.4
Varity_R		0.91
gMVP		0.94

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr5-176056556;