2-70835517-G-C

Position:

• chr2-70835517-G-C

Variant summary

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

The NM_015717.5(CD207):​c.164C>G​(p.Ala55Gly) 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. 13/20 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A55V) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: CD207 NM_015717.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.88

Genes affected

CD207 (HGNC:17935): (CD207 molecule) The protein encoded by this gene is expressed only in Langerhans cells which are immature dendritic cells of the epidermis and mucosa. It is localized in the Birbeck granules, organelles present in the cytoplasm of Langerhans cells and consisting of superimposed and zippered membranes. It is a C-type lectin with mannose binding specificity, and it has been proposed that mannose binding by this protein leads to internalization of antigen into Birbeck granules and providing access to a nonclassical antigen-processing pathway. Mutations in this gene result in Birbeck granules deficiency or loss of sugar binding activity. [provided by RefSeq, Aug 2010]

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=0.1574525).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CD207	NM_015717.5	c.164C>G	p.Ala55Gly	missense_variant	2/6	ENST00000410009.5	NP_056532.4
CD207	XM_011532875.3	c.164C>G	p.Ala55Gly	missense_variant	2/7		XP_011531177.1
CD207	XM_011532876.3	c.164C>G	p.Ala55Gly	missense_variant	2/6		XP_011531178.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CD207	ENST00000410009.5	c.164C>G	p.Ala55Gly	missense_variant	2/6	1	NM_015717.5	ENSP00000386378.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 35

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.12
BayesDel_addAF	Benign	-0.26	T
BayesDel_noAF	Benign	-0.61
CADD	Benign	21
DANN	Uncertain	0.99
DEOGEN2	Benign	0.13	T
Eigen	Benign	-0.58
Eigen_PC	Benign	-0.57
FATHMM_MKL	Benign	0.60	D
LIST_S2	Benign	0.68	T
M_CAP	Benign	0.0058	T
MetaRNN	Benign	0.16	T
MetaSVM	Benign	-0.98	T
MutationAssessor	Uncertain	2.4	M
PrimateAI	Benign	0.27	T
PROVEAN	Benign	-0.98	N
REVEL	Benign	0.033
Sift	Benign	0.043	D
Sift4G	Uncertain	0.019	D
Polyphen		0.42	B
Vest4		0.25
MutPred		0.25		Gain of helix (P = 0.0143);
MVP		0.14
MPC		0.51
ClinPred		0.49	T
GERP RS		4.0
Varity_R		0.056
gMVP		0.21

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

Other links and lift over

dbSNP: rs10489990; hg19: chr2-71062648;