Genetic Variant NM_005460.4:c.1517C>G (chr5-122444657-C-G) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

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

The NM_005460.4(SNCAIP):c.1517C>G(p.Ser506Cys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,736 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

SNCAIP
NM_005460.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.80

Variant links:

Genes affected

SNCAIP (HGNC:11139): (synuclein alpha interacting protein) This gene encodes a protein containing several protein-protein interaction domains, including ankyrin-like repeats, a coiled-coil domain, and an ATP/GTP-binding motif. The encoded protein interacts with alpha-synuclein in neuronal tissue and may play a role in the formation of cytoplasmic inclusions and neurodegeneration. A mutation in this gene has been associated with Parkinson's disease. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Apr 2015]

SNCAIP links:

MGC32805 (HGNC:):

MGC32805 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SNCAIP	NM_005460.4 link	c.1517C>G	p.Ser506Cys	missense_variant	Exon 8 of 11	ENST00000261368.13	NP_005451.2	Q9Y6H5-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SNCAIP	ENST00000261368.13 link	c.1517C>G	p.Ser506Cys	missense_variant	Exon 8 of 11	1	NM_005460.4	ENSP00000261368.8		Q9Y6H5-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1461736

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727178

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Aug 05, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1517C>G (p.S506C) alteration is located in exon 8 (coding exon 7) of the SNCAIP gene. This alteration results from a C to G substitution at nucleotide position 1517, causing the serine (S) at amino acid position 506 to be replaced by a cysteine (C). 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

0.24

BayesDel_addAF

Pathogenic

0.17

BayesDel_noAF

Uncertain

0.0

CADD

Pathogenic

DANN

Uncertain

0.99

DEOGEN2

Benign

0.078

.;T;.;.

Eigen

Uncertain

0.62

Eigen_PC

Pathogenic

0.69

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.95

D;D;D;D

M_CAP

Benign

0.031

MetaRNN

Uncertain

0.61

D;D;D;D

MetaSVM

Benign

-0.41

MutationAssessor

Benign

-0.45

.;N;.;.

PrimateAI

Uncertain

0.65

PROVEAN

Benign

-1.5

N;N;N;N

REVEL

Uncertain

0.35

Sift

Uncertain

0.011

D;D;D;D

Sift4G

Uncertain

0.0040

D;D;D;D

Polyphen

0.85

P;D;D;D

Vest4

0.65, 0.67, 0.65

MutPred

0.56

.;Loss of disorder (P = 0.042);.;.;

MVP

0.92

MPC

0.76

ClinPred

0.97

GERP RS

5.7

Varity_R

0.33

gMVP

0.43

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over