Genetic Variant NM_152540.4:c.1538C>T (chr4-53145356-G-A) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

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

The NM_152540.4(SCFD2):c.1538C>T(p.Ser513Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000616 in 1,461,816 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: 0.0000062 ( 0 hom. )

Consequence

SCFD2
NM_152540.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.88

Variant links:

Genes affected

SCFD2 (HGNC:30676): (sec1 family domain containing 2) Predicted to enable syntaxin binding activity. Predicted to be involved in intracellular protein transport and vesicle docking involved in exocytosis. Predicted to be active in plasma membrane and secretory granule. [provided by Alliance of Genome Resources, Apr 2022]

SCFD2 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
SCFD2	NM_152540.4 link	c.1538C>T	p.Ser513Leu	missense_variant	Exon 5 of 9	ENST00000401642.8	NP_689753.2	Q8WU76-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SCFD2	ENST00000401642.8 link	c.1538C>T	p.Ser513Leu	missense_variant	Exon 5 of 9	1	NM_152540.4	ENSP00000384182.3		Q8WU76-1
SCFD2	ENST00000388940.8 link	c.1538C>T	p.Ser513Leu	missense_variant	Exon 5 of 8	2		ENSP00000373592.4		Q8WU76-2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000398

AC:

AN:

251376

Hom.:

AF XY:

0.00000736

AC XY:

AN XY:

135872

show subpopulations

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:

0.00000879

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000616

AC:

AN:

1461816

Hom.:

Cov.:

AF XY:

0.00000963

AC XY:

AN XY:

727212

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000630

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

Cov.:

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Feb 16, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1538C>T (p.S513L) alteration is located in exon 5 (coding exon 5) of the SCFD2 gene. This alteration results from a C to T substitution at nucleotide position 1538, causing the serine (S) at amino acid position 513 to be replaced by a leucine (L). 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

0.11

BayesDel_addAF

Pathogenic

0.29

BayesDel_noAF

Pathogenic

0.18

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.23

T;.

Eigen

Uncertain

0.46

Eigen_PC

Uncertain

0.41

FATHMM_MKL

Uncertain

0.88

LIST_S2

Uncertain

0.94

D;D

M_CAP

Benign

0.042

MetaRNN

Uncertain

0.53

D;D

MetaSVM

Uncertain

-0.097

MutationAssessor

Benign

2.0

M;M

PrimateAI

Benign

0.44

PROVEAN

Benign

-1.4

N;N

REVEL

Uncertain

0.37

Sift

Benign

0.055

T;D

Sift4G

Pathogenic

0.0

D;D

Polyphen

1.0

D;D

Vest4

0.67

MutPred

0.40

Loss of disorder (P = 0.125);Loss of disorder (P = 0.125);

MVP

0.90

MPC

0.28

ClinPred

0.79

GERP RS

4.8

Varity_R

0.11

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over