6-24174771-C-T

Position:

• chr6-24174771-C-T

Variant summary

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

The NM_016356.5(DCDC2):​c.1390G>A​(p.Glu464Lys) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: DCDC2 NM_016356.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.07

Genes affected

DCDC2 (HGNC:18141): (doublecortin domain containing 2) This gene encodes a doublecortin domain-containing family member. The doublecortin domain has been demonstrated to bind tubulin and enhance microtubule polymerization. This family member is thought to function in neuronal migration where it may affect the signaling of primary cilia. Mutations in this gene have been associated with reading disability (RD) type 2, also referred to as developmental dyslexia. Alternatively spliced transcript variants encoding the same protein have been found for this gene. [provided by RefSeq, Jan 2013]

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=0.1194112).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
DCDC2	NM_016356.5	c.1390G>A	p.Glu464Lys	missense_variant	10/10	ENST00000378454.8	NP_057440.2
DCDC2	NM_001195610.2	c.1390G>A	p.Glu464Lys	missense_variant	11/11		NP_001182539.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
DCDC2	ENST00000378454.8	c.1390G>A	p.Glu464Lys	missense_variant	10/10	1	NM_016356.5	ENSP00000367715.3
DCDC2	ENST00000378450.6	c.649G>A	p.Glu217Lys	missense_variant	3/3	1		ENSP00000367711.3

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Eurofins Ntd Llc (ga)

Aug 04, 2017

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.084
BayesDel_addAF	Benign	-0.23	T
BayesDel_noAF	Benign	-0.57
CADD	Benign	23
DANN	Pathogenic	1.0
DEOGEN2	Benign	0.11	.;T
Eigen	Benign	0.11
Eigen_PC	Uncertain	0.25
FATHMM_MKL	Uncertain	0.91	D
LIST_S2	Benign	0.83	T;T
M_CAP	Benign	0.011	T
MetaRNN	Benign	0.12	T;T
MetaSVM	Benign	-0.99	T
MutationAssessor	Uncertain	2.0	.;M
PrimateAI	Benign	0.39	T
PROVEAN	Benign	-1.1	N;N
REVEL	Benign	0.070
Sift	Uncertain	0.0090	D;D
Sift4G	Uncertain	0.038	D;D
Polyphen		0.76	P;B
Vest4		0.13
MutPred		0.14		.;Gain of ubiquitination at E464 (P = 0.0016);
MVP		0.79
MPC		0.23
ClinPred		0.93	D
GERP RS		5.7
Varity_R		0.18
gMVP		0.25

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: rs1561877167; hg19: chr6-24174999; COSMIC: COSV65828748;