chr19-7745625-T-C

Position:

• chr19-7745625-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_021155.4(CD209):​c.641A>G​(p.Glu214Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 29)
• Consequence: CD209 NM_021155.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.737

Genes affected

CD209 (HGNC:1641): (CD209 molecule) This gene encodes a C-type lectin that functions in cell adhesion and pathogen recognition. This receptor recognizes a wide range of evolutionarily divergent pathogens with a large impact on public health, including leprosy and tuberculosis mycobacteria, the Ebola, hepatitis C, HIV-1 and Dengue viruses, and the SARS-CoV acute respiratory syndrome coronavirus. The protein is organized into four distinct domains: a C-terminal carbohydrate recognition domain, a flexible tandem-repeat neck domain, a transmembrane region and an N-terminal cytoplasmic domain involved in internalization. This gene is closely related in terms of both sequence and function to a neighboring gene, CLEC4M (Gene ID: 10332), also known as L-SIGN. The two genes differ in viral recognition and expression patterns, with this gene showing high expression on the surface of dendritic cells. Polymorphisms in the neck region are associated with protection from HIV-1 infection, while single nucleotide polymorphisms in the promoter of this gene are associated with differing resistance and susceptibility to and severity of infectious disease, including rs4804803, which is associated with SARS severity. [provided by RefSeq, May 2020]

ENSG00000288669 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.08440572).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CD209	NM_021155.4	c.641A>G	p.Glu214Gly	missense_variant	4/7	ENST00000315599.12	NP_066978.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CD209	ENST00000315599.12	c.641A>G	p.Glu214Gly	missense_variant	4/7	1	NM_021155.4	ENSP00000315477.6
ENSG00000288669	ENST00000678003.1	n.38A>G		non_coding_transcript_exon_variant	1/13			ENSP00000504497.1

Frequencies

GnomAD3 genomes Cov.: 29

GnomAD4 exome Cov.: 0

GnomAD4 genome Cov.: 29

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Feb 12, 2024

The c.641A>G (p.E214G) alteration is located in exon 4 (coding exon 4) of the CD209 gene. This alteration results from a A to G substitution at nucleotide position 641, causing the glutamic acid (E) at amino acid position 214 to be replaced by a glycine (G). 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	0.23
BayesDel_addAF	Benign	-0.23	T
BayesDel_noAF	Benign	-0.57
CADD	Benign	19
DANN	Uncertain	0.98
DEOGEN2	Benign	0.16	T;.;.;.;.;.
Eigen	Benign	-0.44
Eigen_PC	Benign	-0.65
FATHMM_MKL	Benign	0.090	N
LIST_S2	Benign	0.77	T;T;T;T;T;T
M_CAP	Benign	0.0018	T
MetaRNN	Benign	0.084	T;T;T;T;T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Uncertain	2.3	M;.;M;.;.;.
PrimateAI	Benign	0.39	T
PROVEAN	Benign	-1.1	N;.;N;N;N;.
REVEL	Benign	0.051
Sift	Uncertain	0.011	D;.;D;D;D;.
Sift4G	Uncertain	0.017	D;D;D;D;D;D
Polyphen		0.75	P;P;P;P;B;P
Vest4		0.30
MutPred		0.17		Gain of MoRF binding (P = 0.0449);.;Gain of MoRF binding (P = 0.0449);.;.;.;
MVP		0.24
MPC		0.069
ClinPred		0.17	T
GERP RS		1.2
Varity_R		0.082
gMVP		0.14

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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

Other links and lift over

dbSNP: rs913323682; hg19: chr19-7810511;