chr22-38506006-C-T

Position:

• chr22-38506006-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_006386.5(DDX17):​c.232G>A​(p.Gly78Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: DDX17 NM_006386.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.23

Genes affected

DDX17 (HGNC:2740): (DEAD-box helicase 17) 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 splicesosome 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 ATPase activated by a variety of RNA species, but not by dsDNA. This protein, and that encoded by DDX5 gene, are more closely related to each other than to any other member of the DEAD box family. This gene can encode multiple isoforms due to both alternative splicing and the use of alternative translation initiation codons, including a non-AUG (CUG) start codon. [provided by RefSeq, Apr 2011]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.19381702).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
DDX17	NM_006386.5	c.232G>A	p.Gly78Arg	missense_variant	1/13	ENST00000403230.3	NP_006377.2
DDX17	NM_001098504.2	c.232G>A	p.Gly78Arg	missense_variant	1/13		NP_001091974.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
DDX17	ENST00000403230.3	c.232G>A	p.Gly78Arg	missense_variant	1/13	1	NM_006386.5	ENSP00000385536.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1441150 Hom.: 0 Cov.: 34 AF XY: 0.00 AC XY: 0 AN XY: 714746

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: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Apr 25, 2023

Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge; Variants in candidate genes are classified as variants of uncertain significance in accordance with ACMG guidelines (Richards et al., 2015) -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.47
BayesDel_addAF	Benign	-0.028	T
BayesDel_noAF	Benign	-0.28
CADD	Pathogenic	26
DANN	Uncertain	1.0
DEOGEN2	Benign	0.21	.;.;T;.
Eigen	Benign	-0.0071
Eigen_PC	Benign	0.12
FATHMM_MKL	Benign	0.18	N
LIST_S2	Benign	0.63	.;T;T;T
M_CAP	Uncertain	0.21	D
MetaRNN	Benign	0.19	T;T;T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	0.0	.;.;N;.
PrimateAI	Pathogenic	0.93	D
PROVEAN	Benign	-0.95	N;N;.;.
REVEL	Benign	0.13
Sift	Uncertain	0.0030	D;D;.;.
Sift4G	Uncertain	0.020	D;D;.;.
MutPred		0.23		Gain of MoRF binding (P = 0.0379);Gain of MoRF binding (P = 0.0379);Gain of MoRF binding (P = 0.0379);Gain of MoRF binding (P = 0.0379);
MVP		0.39
ClinPred		0.58	D
GERP RS		4.4
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.11
gMVP		0.13

Splicing

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr22-38902011;