6-31970974-C-T

Position:

• chr6-31970974-C-T

Variant summary

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

The NM_005510.4(DXO):​c.530G>A​(p.Arg177Gln) variant causes a missense change. The variant allele was found at a frequency of 0.00000548 in 1,460,746 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: not found (cov: 32)
  • Exomes 𝑓: 0.0000055 (0 hom.)
• Consequence: DXO NM_005510.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.45

Genes affected

DXO (HGNC:2992): (decapping exoribonuclease) This gene localizes to the major histocompatibility complex (MHC) class III region on chromosome 6. The function of its protein product is unknown, but its ubiquitous expression and conservation in both simple and complex eukaryotes suggests that this may be a housekeeping gene. [provided by RefSeq, Jul 2008]

DXO (HGNC:):

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=0.22540236).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
DXO	NM_005510.4	c.530G>A	p.Arg177Gln	missense_variant	3/7	ENST00000337523.10	NP_005501.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
DXO	ENST00000337523.10	c.530G>A	p.Arg177Gln	missense_variant	3/7	1	NM_005510.4	ENSP00000337759.5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000548 AC: 8 AN: 1460746 Hom.: 0 Cov.: 33 AF XY: 0.00000550 AC XY: 4 AN XY: 726694

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: 0.0000464

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000270

Gnomad4 OTH exome AF: 0.0000166

GnomAD4 genome Cov.: 32

Alfa AF: 0.0000329 Hom.: 0

Bravo AF: 0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jan 22, 2024

The c.530G>A (p.R177Q) alteration is located in exon 3 (coding exon 2) of the DXO gene. This alteration results from a G to A substitution at nucleotide position 530, causing the arginine (R) at amino acid position 177 to be replaced by a glutamine (Q). 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	0.098
BayesDel_addAF	Benign	-0.14	T
BayesDel_noAF	Benign	-0.44
CADD	Benign	21
DANN	Pathogenic	1.0
DEOGEN2	Benign	0.00086	T;T;T
Eigen	Uncertain	0.23
Eigen_PC	Uncertain	0.29
FATHMM_MKL	Uncertain	0.92	D
M_CAP	Benign	0.012	T
MetaRNN	Benign	0.23	T;T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	1.7	L;L;L
PrimateAI	Uncertain	0.50	T
PROVEAN	Benign	-0.66	N;N;N
REVEL	Benign	0.10
Sift	Benign	0.22	T;T;T
Sift4G	Benign	0.21	T;T;T
Polyphen		0.91	P;P;P
Vest4		0.29
MVP		0.33
MPC		0.53
ClinPred		0.89	D
GERP RS		5.2
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.32
gMVP		0.74

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

Other links and lift over

dbSNP: rs1167228380; hg19: chr6-31938751;