Variant chr6-31532784-T-C details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2

The NM_004640.7(DDX39B):c.863A>G(p.Asn288Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000137 in 1,458,230 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 29)

Exomes 𝑓: 0.000014 ( 0 hom. )

Consequence

DDX39B
NM_004640.7 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.65

Variant links:

Genes affected

DDX39B (HGNC:13917): (DExD-box helicase 39B) This gene encodes a member of the DEAD box family of RNA-dependent ATPases that mediate ATP hydrolysis during pre-mRNA splicing. The encoded protein is an essential splicing factor required for association of U2 small nuclear ribonucleoprotein with pre-mRNA, and it also plays an important role in mRNA export from the nucleus to the cytoplasm. This gene belongs to a cluster of genes localized in the vicinity of the genes encoding tumor necrosis factor alpha and tumor necrosis factor beta. These genes are all within the human major histocompatibility complex class III region. Mutations in this gene may be associated with rheumatoid arthritis. Alternative splicing results in multiple transcript variants. Related pseudogenes have been identified on both chromosomes 6 and 11. Read-through transcription also occurs between this gene and the upstream ATP6V1G2 (ATPase, H+ transporting, lysosomal 13kDa, V1 subunit G2) gene. [provided by RefSeq, Feb 2011]

DDX39B links:

ATP6V1G2-DDX39B (HGNC:):

ATP6V1G2-DDX39B links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

BS2

High AC in GnomAdExome4 at 20 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
DDX39B	NM_004640.7 linkuse as main transcript	c.863A>G	p.Asn288Ser	missense_variant	7/11	ENST00000396172.6
ATP6V1G2-DDX39B	NR_037853.1 linkuse as main transcript	n.1666A>G		non_coding_transcript_exon_variant	9/13
DDX39B	NM_080598.6 linkuse as main transcript	c.863A>G	p.Asn288Ser	missense_variant	7/11
DDX39B	NR_037852.2 linkuse as main transcript	n.828A>G		non_coding_transcript_exon_variant	5/9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
DDX39B	ENST00000396172.6 linkuse as main transcript	c.863A>G	p.Asn288Ser	missense_variant	7/11	1	NM_004640.7	P1	Q13838-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000812

AC:

AN:

246410

Hom.:

AF XY:

0.00

AC XY:

AN XY:

134286

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:

0.0000462

Gnomad NFE exome

AF:

0.00000905

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000137

AC:

AN:

1458230

Hom.:

Cov.:

AF XY:

0.00000965

AC XY:

AN XY:

725408

show subpopulations

Gnomad4 AFR exome

AF:

0.0000300

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000126

Gnomad4 OTH exome

AF:

0.0000498

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000329

Hom.:

Bravo

AF:

0.00000756

ExAC

AF:

0.00000847

AC:

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

Aug 17, 2022

The c.863A>G (p.N288S) alteration is located in exon 7 (coding exon 6) of the DDX39B gene. This alteration results from a A to G substitution at nucleotide position 863, causing the asparagine (N) at amino acid position 288 to be replaced by a serine (S). 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

Uncertain

0.41

BayesDel_addAF

Uncertain

0.051

BayesDel_noAF

Benign

-0.17

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.48

T;D;D;T;.

Eigen

Uncertain

0.36

Eigen_PC

Uncertain

0.46

FATHMM_MKL

Pathogenic

0.99

M_CAP

Uncertain

0.12

MetaRNN

Uncertain

0.51

D;D;D;D;D

MetaSVM

Benign

-0.93

MutationAssessor

Benign

1.2

.;L;L;.;.

MutationTaster

Benign

1.0

D;D;D;D;D

PrimateAI

Uncertain

0.76

PROVEAN

Pathogenic

-4.6

D;D;D;D;D

REVEL

Uncertain

0.32

Sift

Pathogenic

0.0

D;D;D;D;D

Sift4G

Benign

0.082

T;T;T;.;D

Polyphen

0.98

D;D;D;.;.

Vest4

0.50

MVP

0.94

MPC

1.3

ClinPred

0.99

GERP RS

5.3

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.89

gMVP

0.82

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