dbSNP rs200429239: DCDC2B:p.Arg74Lys (chr1-32209314-G-A) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_001099434.2(DCDC2B):c.221G>A(p.Arg74Lys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000151 in 1,461,702 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts 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. R74I) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.000015 ( 0 hom. )

Consequence

DCDC2B
NM_001099434.2 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 7.69

Publications

0 publications found

Variant links:

Genes affected

DCDC2B (HGNC:32576): (doublecortin domain containing 2B) This gene encodes a member of the doublecortin family. The protein encoded by this gene contains two doublecortin domains. The doublecortin domain has been demonstrated to bind tubulin and enhance microtubule polymerization. [provided by RefSeq, Sep 2010]

DCDC2B links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.1822977).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001099434.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DCDC2B	NM_001099434.2	MANE Select	c.221G>A	p.Arg74Lys	missense	Exon 1 of 9	NP_001092904.1	A2VCK2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
DCDC2B	ENST00000409358.2	TSL:1 MANE Select	c.221G>A	p.Arg74Lys	missense	Exon 1 of 9	ENSP00000386870.1	A2VCK2
DCDC2B	ENST00000906474.1		c.221G>A	p.Arg74Lys	missense	Exon 1 of 9	ENSP00000576533.1
DCDC2B	ENST00000487056.1	TSL:2	n.219G>A		non_coding_transcript_exon	Exon 1 of 7

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000401

AC:

AN:

249226

AF XY:

0.00

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000885

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000151

AC:

AN:

1461702

Hom.:

Cov.:

AF XY:

0.0000138

AC XY:

AN XY:

727134

show subpopulations

African (AFR)

AF:

0.0000299

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26134

East Asian (EAS)

AF:

0.000504

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53398

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111866

Other (OTH)

AF:

0.0000166

AC:

AN:

60374

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.464

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

ExAC

AF:

0.00000826

AC:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.094

BayesDel_addAF

Benign

-0.040

BayesDel_noAF

Benign

-0.29

CADD

Uncertain

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.27

Eigen

Benign

-0.13

Eigen_PC

Benign

0.12

FATHMM_MKL

Uncertain

0.91

LIST_S2

Benign

0.60

M_CAP

Benign

0.037

MetaRNN

Benign

0.18

MetaSVM

Benign

-0.64

MutationAssessor

Benign

-0.14

PhyloP100

7.7

PrimateAI

Benign

0.31

PROVEAN

Benign

-0.080

REVEL

Uncertain

0.37

Sift

Uncertain

0.015

Sift4G

Benign

0.082

Polyphen

0.0020

Vest4

0.16

MutPred

0.46

Gain of ubiquitination at R74 (P = 0.0219)

MVP

0.78

MPC

0.082

ClinPred

0.66

GERP RS

5.1

PromoterAI

0.051

Neutral

(source)

Varity_R

0.26

gMVP

0.38

Mutation Taster

=88/12

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over