Variant chr19-51455603-G-T details in Genebe, Genetics Data Aggregator

Variant summary

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

The NM_014442.3(SIGLEC8):c.866C>A(p.Pro289His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P289S) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 31)

Consequence

SIGLEC8
NM_014442.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.62

Variant links:

Genes affected

SIGLEC8 (HGNC:10877): (sialic acid binding Ig like lectin 8) Sialic acid-binding immunoglobulin (Ig)-like lectins, or SIGLECs (e.g., CD33 (MIM 159590)), are a family of type 1 transmembrane proteins each having a unique expression pattern, mostly in hemopoietic cells. SIGLEC8 is a member of the CD33-like subgroup of SIGLECs, which are localized to 19q13.3-q13.4 and have 2 conserved cytoplasmic tyrosine-based motifs: an immunoreceptor tyrosine-based inhibitory motif, or ITIM (see MIM 604964), and a motif homologous to one identified in signaling lymphocyte activation molecule (SLAM; MIM 603492) that mediates an association with SLAM-associated protein (SAP; MIM 300490) (summarized by Foussias et al., 2000 [PubMed 11095983]).[supplied by OMIM, May 2010]

SIGLEC8 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/exons	MANE
SIGLEC8	NM_014442.3 linkuse as main transcript	c.866C>A	p.Pro289His	missense_variant	4/7	ENST00000321424.7
SIGLEC8	NM_001363548.1 linkuse as main transcript	c.587C>A	p.Pro196His	missense_variant	3/6
SIGLEC8	XM_011526734.3 linkuse as main transcript	c.833C>A	p.Pro278His	missense_variant	4/7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SIGLEC8	ENST00000321424.7 linkuse as main transcript	c.866C>A	p.Pro289His	missense_variant	4/7	1	NM_014442.3	P1	Q9NYZ4-1
SIGLEC8	ENST00000340550.5 linkuse as main transcript	c.587C>A	p.Pro196His	missense_variant	3/6	1			Q9NYZ4-2
SIGLEC8	ENST00000430817.5 linkuse as main transcript	c.539C>A	p.Pro180His	missense_variant	2/6	2
SIGLEC8	ENST00000597352.1 linkuse as main transcript	n.482C>A		non_coding_transcript_exon_variant	3/3	4

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

Cov.:

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

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Dec 28, 2023

The c.866C>A (p.P289H) alteration is located in exon 4 (coding exon 4) of the SIGLEC8 gene. This alteration results from a C to A substitution at nucleotide position 866, causing the proline (P) at amino acid position 289 to be replaced by a histidine (H). 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

Uncertain

0.49

BayesDel_addAF

Benign

-0.092

BayesDel_noAF

Benign

-0.37

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.24

.;T;.

Eigen

Uncertain

0.44

Eigen_PC

Benign

0.12

FATHMM_MKL

Benign

0.18

LIST_S2

Uncertain

0.92

D;D;D

M_CAP

Benign

0.0015

MetaRNN

Uncertain

0.46

T;T;T

MetaSVM

Benign

-0.72

MutationAssessor

Pathogenic

4.8

.;H;.

MutationTaster

Benign

1.0

N;N;N

PrimateAI

Benign

0.45

PROVEAN

Pathogenic

-6.8

D;D;D

REVEL

Benign

0.090

Sift

Uncertain

0.0010

D;D;D

Sift4G

Pathogenic

0.0010

D;D;D

Polyphen

1.0

D;D;D

Vest4

0.35

MutPred

0.63

.;Gain of MoRF binding (P = 0.0516);.;

MVP

0.54

MPC

0.47

ClinPred

0.99

GERP RS

2.2

Varity_R

0.75

gMVP

0.30

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