10-68960148-A-G

Variant names:

Variant summary

Our verdict is Benign. Variant got -10 ACMG points: 0P and 10B. BP4_StrongBP6_ModerateBS2

The NM_004728.4(DDX21):c.430A>G(p.Arg144Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000057 in 1,614,210 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.00033 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000029 ( 0 hom. )

Consequence

DDX21
NM_004728.4 missense

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: 0.226

Variant links:

Genes affected

DDX21 (HGNC:2744): (DExD-box helicase 21) DEAD box proteins, characterized by the conserved motif Asp-Glu-Ala-Asp (DEAD), are putative RNA helicases. They are implicated in a number of cellular processes involving alteration of RNA secondary structure such as translation initiation, nuclear and mitochondrial splicing, and ribosome and spliceosome assembly. Based on their distribution patterns, some members of this family are believed to be involved in embryogenesis, spermatogenesis, and cellular growth and division. This gene encodes a DEAD box protein, which is an antigen recognized by autoimmune antibodies from a patient with watermelon stomach disease. This protein unwinds double-stranded RNA, folds single-stranded RNA, and may play important roles in ribosomal RNA biogenesis, RNA editing, RNA transport, and general transcription. [provided by RefSeq, Jul 2008]

DDX21 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -10 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0070994496).

BP6

Variant 10-68960148-A-G is Benign according to our data. Variant chr10-68960148-A-G is described in ClinVar as [Likely_benign]. Clinvar id is 3080933.Status of the report is criteria_provided_single_submitter, 1 stars.

BS2

High AC in GnomAd4 at 50 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DDX21	NM_004728.4 link	c.430A>G	p.Arg144Gly	missense_variant	Exon 2 of 15	ENST00000354185.9	NP_004719.2	Q9NR30-1
DDX21	NM_001410932.1 link	c.430A>G	p.Arg144Gly	missense_variant	Exon 2 of 14		NP_001397861.1
DDX21	NM_001256910.2 link	c.226A>G	p.Arg76Gly	missense_variant	Exon 2 of 15		NP_001243839.1	Q9NR30-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DDX21	ENST00000354185.9 link	c.430A>G	p.Arg144Gly	missense_variant	Exon 2 of 15	1	NM_004728.4	ENSP00000346120.4		Q9NR30-1

Frequencies

GnomAD3 genomes

AF:

0.000322

AC:

AN:

152236

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00116

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000679

AC:

AN:

250462

Hom.:

AF XY:

0.0000295

AC XY:

AN XY:

135746

show subpopulations

Gnomad AFR exome

AF:

0.000951

Gnomad AMR exome

AF:

0.0000578

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000287

AC:

AN:

1461856

Hom.:

Cov.:

AF XY:

0.0000193

AC XY:

AN XY:

727228

show subpopulations

Gnomad4 AFR exome

AF:

0.000926

Gnomad4 AMR exome

AF:

0.0000671

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000232

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000993

GnomAD4 genome

AF:

0.000328

AC:

AN:

152354

Hom.:

Cov.:

AF XY:

0.000309

AC XY:

AN XY:

74508

show subpopulations

Gnomad4 AFR

AF:

0.00118

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000635

Hom.:

Bravo

AF:

0.000419

ESP6500AA

AF:

0.00182

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000906

AC:

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Benign:1

Jan 06, 2023

Ambry Genetics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.053

BayesDel_addAF

Benign

-0.63

BayesDel_noAF

Benign

-0.72

CADD

Benign

7.9

DANN

Benign

0.24

DEOGEN2

Benign

0.075

T;.

Eigen

Benign

-1.4

Eigen_PC

Benign

-1.3

FATHMM_MKL

Benign

0.021

LIST_S2

Benign

0.092

T;T

M_CAP

Benign

0.0056

MetaRNN

Benign

0.0071

T;T

MetaSVM

Benign

-0.98

MutationAssessor

Benign

-2.1

N;.

PrimateAI

Benign

0.29

PROVEAN

Benign

1.6

N;.

REVEL

Benign

0.031

Sift

Benign

1.0

T;.

Sift4G

Benign

0.64

T;T

Polyphen

0.0

B;.

Vest4

0.077

MVP

0.13

MPC

0.099

ClinPred

0.0083

GERP RS

2.4

Varity_R

0.12

gMVP

0.075

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over