Genetic Variant DDX49:p.Ala174Val (chr19-18922399-C-T) – 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_019070.5(DDX49):c.521C>T(p.Ala174Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000335 in 1,610,626 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A174E) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000034 ( 1 hom. )

Consequence

DDX49
NM_019070.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.434

Publications

0 publications found

Variant links:

Genes affected

DDX49 (HGNC:18684): (DEAD-box helicase 49) Enables RNA binding activity. Involved in positive regulation of cell growth and regulation of rRNA stability. Predicted to be located in nucleoplasm. Predicted to be active in nucleus. [provided by Alliance of Genome Resources, Apr 2022]

DDX49 links:

ENSG00000268193 (HGNC:):

ENSG00000268193 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=0.0714283).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_019070.5. 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
	DDX49	NM_019070.5	MANE Select	c.521C>T	p.Ala174Val	missense	Exon 5 of 13	NP_061943.2
	DDX49	NR_033677.2		n.477C>T		non_coding_transcript_exon	Exon 5 of 13

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
DDX49	ENST00000247003.9	TSL:1 MANE Select	c.521C>T	p.Ala174Val	missense	Exon 5 of 13	ENSP00000247003.3	Q9Y6V7-1
DDX49	ENST00000595858.5	TSL:1	n.*96C>T		non_coding_transcript_exon	Exon 6 of 14	ENSP00000471292.1	M0R0K1
DDX49	ENST00000602113.5	TSL:1	n.*324C>T		non_coding_transcript_exon	Exon 5 of 13	ENSP00000469086.1	M0QXD4

Frequencies

GnomAD3 genomes

AF:

0.0000328

AC:

AN:

152248

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000541

AC:

AN:

240302

AF XY:

0.0000686

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:

0.0000277

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000336

AC:

AN:

1458378

Hom.:

Cov.:

AF XY:

0.0000427

AC XY:

AN XY:

725456

show subpopulations

African (AFR)

AF:

0.0000896

AC:

AN:

33470

American (AMR)

AF:

0.00

AC:

AN:

44434

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26028

East Asian (EAS)

AF:

0.00

AC:

AN:

39642

South Asian (SAS)

AF:

0.000314

AC:

AN:

85870

European-Finnish (FIN)

AF:

0.00

AC:

AN:

51430

Middle Eastern (MID)

AF:

0.000523

AC:

AN:

5740

European-Non Finnish (NFE)

AF:

0.0000117

AC:

AN:

1111506

Other (OTH)

AF:

0.0000498

AC:

AN:

60258

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

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

AF:

0.0000328

AC:

AN:

152248

Hom.:

Cov.:

AF XY:

0.0000672

AC XY:

AN XY:

74378

show subpopulations

African (AFR)

AF:

0.0000241

AC:

AN:

41468

American (AMR)

AF:

0.0000654

AC:

AN:

15286

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5196

South Asian (SAS)

AF:

0.000207

AC:

AN:

4834

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10630

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000294

AC:

AN:

68040

Other (OTH)

AF:

0.00

AC:

AN:

2094

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome 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

Alfa

AF:

0.0000225

Hom.:

Bravo

AF:

0.0000264

ExAC

AF:

0.0000412

AC:

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.47

BayesDel_noAF

Benign

-0.60

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.045

Eigen

Benign

-0.66

Eigen_PC

Benign

-0.70

FATHMM_MKL

Benign

0.23

LIST_S2

Uncertain

0.92

M_CAP

Benign

0.0096

MetaRNN

Benign

0.071

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.9

PhyloP100

0.43

PrimateAI

Benign

0.33

PROVEAN

Benign

-1.8

REVEL

Benign

0.013

Sift

Benign

0.15

Sift4G

Benign

0.16

Polyphen

0.069

Vest4

0.26

MutPred

0.44

Gain of loop (P = 0.2754)

MVP

0.44

MPC

0.47

ClinPred

0.039

GERP RS

0.85

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.069

gMVP

0.41

Mutation Taster

=96/4

polymorphism

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over