10-68960181-C-T

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.463C>T(p.Pro155Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000583 in 1,613,390 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 0.000033 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000061 ( 0 hom. )

Consequence

DDX21
NM_004728.4 missense

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: -1.65

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=0.029007375).

BP6

Variant 10-68960181-C-T is Benign according to our data. Variant chr10-68960181-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 3838847.Status of the report is criteria_provided_single_submitter, 1 stars.

BS2

High AC in GnomAd4 at 5 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DDX21	NM_004728.4 link	c.463C>T	p.Pro155Ser	missense_variant	Exon 2 of 15	ENST00000354185.9	NP_004719.2	Q9NR30-1
DDX21	NM_001410932.1 link	c.463C>T	p.Pro155Ser	missense_variant	Exon 2 of 14		NP_001397861.1
DDX21	NM_001256910.2 link	c.259C>T	p.Pro87Ser	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.463C>T	p.Pro155Ser	missense_variant	Exon 2 of 15	1	NM_004728.4	ENSP00000346120.4		Q9NR30-1

Frequencies

GnomAD3 genomes

AF:

0.0000329

AC:

AN:

152194

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.0000943

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000588

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000120

AC:

AN:

249858

Hom.:

AF XY:

0.0000961

AC XY:

AN XY:

135324

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 SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0000925

Gnomad NFE exome

AF:

0.000230

Gnomad OTH exome

AF:

0.000329

GnomAD4 exome

AF:

0.0000609

AC:

AN:

1461196

Hom.:

Cov.:

AF XY:

0.0000564

AC XY:

AN XY:

726932

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.000187

Gnomad4 NFE exome

AF:

0.0000630

Gnomad4 OTH exome

AF:

0.000149

GnomAD4 genome

AF:

0.0000329

AC:

AN:

152194

Hom.:

Cov.:

AF XY:

0.0000404

AC XY:

AN XY:

74344

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.0000943

Gnomad4 NFE

AF:

0.0000588

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000329

Hom.:

Bravo

AF:

0.0000302

ExAC

AF:

0.000231

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Benign:1

Feb 25, 2025

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

0.065

BayesDel_addAF

Benign

-0.58

BayesDel_noAF

Benign

-0.78

CADD

Benign

0.064

DANN

Benign

0.16

DEOGEN2

Benign

0.13

T;.

Eigen

Benign

-1.8

Eigen_PC

Benign

-1.8

FATHMM_MKL

Benign

0.054

LIST_S2

Benign

0.57

T;T

M_CAP

Benign

0.0041

MetaRNN

Benign

0.029

T;T

MetaSVM

Benign

-0.94

MutationAssessor

Benign

-0.015

N;.

PrimateAI

Benign

0.23

PROVEAN

Benign

-0.080

N;.

REVEL

Benign

0.033

Sift

Benign

1.0

T;.

Sift4G

Benign

0.94

T;T

Polyphen

0.0

B;.

Vest4

0.048

MVP

0.17

MPC

0.078

ClinPred

0.015

GERP RS

-7.8

RBP_binding_hub_radar

1.0

RBP_regulation_power_radar

2.8

Varity_R

0.070

gMVP

0.12

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