Genetic Variant SIGLEC15:p.Glu130Gln (chr18-45837788-G-C) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_213602.3(SIGLEC15):c.388G>C(p.Glu130Gln) variant causes a missense change. The variant allele was found at a frequency of 0.00000073 in 1,370,754 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 7.3e-7 ( 0 hom. )

Consequence

SIGLEC15
NM_213602.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.36

Publications

0 publications found

Variant links:

Genes affected

SIGLEC15 (HGNC:27596): (sialic acid binding Ig like lectin 15) Predicted to be involved in regulation of actin cytoskeleton organization; regulation of bone resorption; and regulation of osteoclast development. Predicted to be integral component of membrane. Predicted to be part of protein-containing complex. Predicted to be active in plasma membrane. [provided by Alliance of Genome Resources, Apr 2022]

SIGLEC15 links:

EPG5 (HGNC:29331): (ectopic P-granules 5 autophagy tethering factor) This gene encodes a large coiled coil domain-containing protein that functions in autophagy during starvation conditions. Mutations in this gene cause Vici syndrome. [provided by RefSeq, Aug 2015]

EPG5 Gene-Disease associations (from GenCC):

Vici syndrome
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, Orphanet, G2P

EPG5 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 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
SIGLEC15	NM_213602.3 link	c.388G>C	p.Glu130Gln	missense_variant	Exon 3 of 6	ENST00000389474.8	NP_998767.1	Q6ZMC9-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SIGLEC15	ENST00000389474.8 link	c.388G>C	p.Glu130Gln	missense_variant	Exon 3 of 6	1	NM_213602.3	ENSP00000374125.2		Q6ZMC9-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

7.30e-7

AC:

AN:

1370754

Hom.:

Cov.:

AF XY:

0.00000148

AC XY:

AN XY:

677734

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

28218

American (AMR)

AF:

0.00

AC:

AN:

36208

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

24332

East Asian (EAS)

AF:

0.00

AC:

AN:

32584

South Asian (SAS)

AF:

0.0000128

AC:

AN:

78384

European-Finnish (FIN)

AF:

0.00

AC:

AN:

33710

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4382

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1075924

Other (OTH)

AF:

0.00

AC:

AN:

57012

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.575

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000113

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jul 26, 2022

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.388G>C (p.E130Q) alteration is located in exon 3 (coding exon 3) of the SIGLEC15 gene. This alteration results from a G to C substitution at nucleotide position 388, causing the glutamic acid (E) at amino acid position 130 to be replaced by a glutamine (Q). 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

0.20

BayesDel_addAF

Benign

-0.14

BayesDel_noAF

Benign

-0.44

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.0023

Eigen

Uncertain

0.51

Eigen_PC

Uncertain

0.48

FATHMM_MKL

Uncertain

0.95

LIST_S2

Benign

0.51

M_CAP

Uncertain

0.087

MetaRNN

Uncertain

0.42

MetaSVM

Benign

-0.42

MutationAssessor

Benign

1.1

PhyloP100

5.4

PrimateAI

Pathogenic

0.80

PROVEAN

Benign

-0.56

REVEL

Benign

0.21

Sift

Benign

0.28

Sift4G

Benign

0.14

Polyphen

0.99

Vest4

0.23

MutPred

0.47

Gain of MoRF binding (P = 0.0202);

MVP

0.75

MPC

1.2

ClinPred

0.93

GERP RS

3.7

PromoterAI

-0.0094

Neutral

(source)

Varity_R

0.17

gMVP

0.43

Mutation Taster

=86/14

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.040

Details are displayed if max score is > 0.2

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over