9-132670071-G-T

Position:

chr9-132670071-G-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The ENST00000480876.3(DDX31):c.-137C>A variant causes a 5 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000128 in 1,559,796 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 7.1e-7 ( 0 hom. )

Consequence

DDX31
ENST00000480876.3 5_prime_UTR

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.786

Variant links:

Genes affected

DDX31 (HGNC:16715): (DEAD-box helicase 31) 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 DEAD box protein family are believed to be involved in embryogenesis, spermatogenesis, and cellular growth and division. This gene encodes a member of this family. The function of this member has not been determined. Alternative splicing of this gene generates multiple transcript variants encoding different isoforms. [provided by RefSeq, Apr 2016]

DDX31 links:

GTF3C4 (HGNC:4667): (general transcription factor IIIC subunit 4) Predicted to enable enzyme activator activity. Predicted to contribute to DNA binding activity. Predicted to be involved in 5S class rRNA transcription by RNA polymerase III and tRNA transcription by RNA polymerase III. Located in mitochondrion and nucleoplasm. Part of transcription factor TFIIIC complex. [provided by Alliance of Genome Resources, Apr 2022]

GTF3C4 links:

DDX31 (HGNC:):

DDX31 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.05453548).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
GTF3C4	NR_133925.1 linkuse as main transcript	n.37G>T		non_coding_transcript_exon_variant	1/6

Ensembl

Gene	Transcript	HGVSc	Effect	#exon/exons	TSL	Protein	UniProt
DDX31	ENST00000480876.3 linkuse as main transcript	c.-137C>A	5_prime_UTR_variant	1/7	1	ENSP00000479697.2	Q9H8H2
DDX31	ENST00000310532.7 linkuse as main transcript	c.-137C>A	5_prime_UTR_variant	1/15	2	ENSP00000310539.2	Q9H8H2
GTF3C4	ENST00000483873.6 linkuse as main transcript	c.-528G>T	5_prime_UTR_variant	1/3	3	ENSP00000431378.1	F2Z356
DDX31	ENST00000482620.1 linkuse as main transcript	n.331C>A	non_coding_transcript_exon_variant	1/4	5

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152162

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

7.10e-7

AC:

AN:

1407634

Hom.:

Cov.:

AF XY:

0.00000144

AC XY:

AN XY:

694378

show subpopulations

Gnomad4 AFR exome

AF:

0.0000313

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:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152162

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74338

show subpopulations

Gnomad4 AFR

AF:

0.0000241

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:

0.00

Gnomad4 OTH

AF:

0.00

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

Jul 25, 2023

The c.179C>A (p.T60K) alteration is located in exon 1 (coding exon 1) of the DDX31 gene. This alteration results from a C to A substitution at nucleotide position 179, causing the threonine (T) at amino acid position 60 to be replaced by a lysine (K). 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

0.12

BayesDel_addAF

Benign

-0.24

BayesDel_noAF

Benign

-0.59

CADD

Benign

1.8

DANN

Benign

0.73

DEOGEN2

Benign

0.00079

T;T;.;.

Eigen

Benign

-1.3

Eigen_PC

Benign

-1.4

FATHMM_MKL

Benign

0.12

LIST_S2

Benign

0.33

.;T;T;T

M_CAP

Benign

0.0066

MetaRNN

Benign

0.055

T;T;T;T

MetaSVM

Benign

-0.94

MutationAssessor

Benign

0.0

N;N;N;N

PrimateAI

Uncertain

0.62

PROVEAN

Benign

-0.36

N;N;N;.

REVEL

Benign

0.023

Sift

Uncertain

0.010

D;D;D;.

Sift4G

Uncertain

0.029

D;D;D;D

Polyphen

0.013

B;B;.;B

Vest4

0.17

MutPred

0.29

Gain of methylation at T60 (P = 0.0087);Gain of methylation at T60 (P = 0.0087);Gain of methylation at T60 (P = 0.0087);Gain of methylation at T60 (P = 0.0087);

MVP

0.19

MPC

0.18

ClinPred

0.12

GERP RS

0.58

Varity_R

0.062

gMVP

0.094

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

No publications associated with this variant yet.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over