Variant 1-111763005-C-T details in Genebe, Genetics Data Aggregator

Variant summary

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

The NM_007204.5(DDX20):c.1310C>T(p.Pro437Leu) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.000482 in 1,602,864 control chromosomes in the GnomAD database, with no homozygous occurrence. 2/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00039 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00049 ( 0 hom. )

Consequence

DDX20
NM_007204.5 missense, splice_region

Scores

Splicing: ADA: 0.9998

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.38

Variant links:

Genes affected

DDX20 (HGNC:2743): (DEAD-box helicase 20) 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 has an ATPase activity and is a component of the survival of motor neurons (SMN) complex. This protein interacts directly with SMN, the spinal muscular atrophy gene product, and may play a catalytic role in the function of the SMN complex on RNPs. [provided by RefSeq, Jul 2008]

DDX20 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
DDX20	NM_007204.5 linkuse as main transcript	c.1310C>T	p.Pro437Leu	missense_variant, splice_region_variant	10/11	ENST00000369702.5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
DDX20	ENST00000369702.5 linkuse as main transcript	c.1310C>T	p.Pro437Leu	missense_variant, splice_region_variant	10/11	1	NM_007204.5	P2	Q9UHI6-1

Frequencies

GnomAD3 genomes

AF:

0.000388

AC:

AN:

152072

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000193

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.0000944

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000706

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000300

AC:

AN:

250072

Hom.:

AF XY:

0.000252

AC XY:

AN XY:

135138

show subpopulations

Gnomad AFR exome

AF:

0.000185

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.0000995

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000601

Gnomad OTH exome

AF:

0.000491

GnomAD4 exome

AF:

0.000492

AC:

714

AN:

1450792

Hom.:

Cov.:

AF XY:

0.000493

AC XY:

356

AN XY:

722418

show subpopulations

Gnomad4 AFR exome

AF:

0.000150

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000627

Gnomad4 OTH exome

AF:

0.000283

GnomAD4 genome

AF:

0.000388

AC:

AN:

152072

Hom.:

Cov.:

AF XY:

0.000296

AC XY:

AN XY:

74284

show subpopulations

Gnomad4 AFR

AF:

0.000193

Gnomad4 AMR

AF:

0.000131

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.0000944

Gnomad4 NFE

AF:

0.000706

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000548

Hom.:

Bravo

AF:

0.000355

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.00

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000465

AC:

ExAC

AF:

0.000206

AC:

EpiCase

AF:

0.000872

EpiControl

AF:

0.000475

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 21, 2021

The c.1310C>T (p.P437L) alteration is located in exon 10 (coding exon 10) of the DDX20 gene. This alteration results from a C to T substitution at nucleotide position 1310, causing the proline (P) at amino acid position 437 to be replaced by a leucine (L). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.34

BayesDel_addAF

Benign

-0.14

BayesDel_noAF

Benign

-0.090

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.32

T;.

Eigen

Pathogenic

0.82

Eigen_PC

Pathogenic

0.77

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.93

D;D

M_CAP

Uncertain

0.13

MetaRNN

Uncertain

0.61

D;D

MetaSVM

Uncertain

0.14

MutationAssessor

Uncertain

2.3

M;.

MutationTaster

Benign

1.0

D;D;D

PrimateAI

Uncertain

0.57

PROVEAN

Pathogenic

-7.1

D;D

REVEL

Uncertain

0.39

Sift

Benign

0.049

D;D

Sift4G

Uncertain

0.011

D;D

Polyphen

1.0

D;D

Vest4

0.60

MVP

0.93

MPC

0.45

ClinPred

0.37

GERP RS

5.3

Varity_R

0.33

gMVP

0.88

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Pathogenic

1.0

dbscSNV1_RF

Pathogenic

0.97

SpliceAI score (max)

0.060

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