17-82035971-A-C

Position:

• chr17-82035971-A-C

Variant summary

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

The NM_016286.4(DCXR):​c.724T>G​(p.Trp242Gly) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: DCXR NM_016286.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.25

Genes affected

DCXR (HGNC:18985): (dicarbonyl and L-xylulose reductase) The protein encoded by this gene acts as a homotetramer to catalyze diacetyl reductase and L-xylulose reductase reactions. The encoded protein may play a role in the uronate cycle of glucose metabolism and in the cellular osmoregulation in the proximal renal tubules. Defects in this gene are a cause of pentosuria. Two transcript variants encoding different isoforms have been found for this gene.[provided by RefSeq, Aug 2010]

DCXR (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=0.24785906).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
DCXR	NM_016286.4	c.724T>G	p.Trp242Gly	missense_variant	8/8	ENST00000306869.7	NP_057370.1
DCXR	NM_001195218.1	c.718T>G	p.Trp240Gly	missense_variant	8/8		NP_001182147.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
DCXR	ENST00000306869.7	c.724T>G	p.Trp242Gly	missense_variant	8/8	1	NM_016286.4	ENSP00000303356.2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 33

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 26, 2022

The c.724T>G (p.W242G) alteration is located in exon 8 (coding exon 8) of the DCXR gene. This alteration results from a T to G substitution at nucleotide position 724, causing the tryptophan (W) at amino acid position 242 to be replaced by a glycine (G). 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	0.18
BayesDel_addAF	Benign	-0.12	T
BayesDel_noAF	Benign	-0.41
CADD	Benign	22
DANN	Benign	0.68
DEOGEN2	Benign	0.045	T
Eigen	Benign	-0.49
Eigen_PC	Benign	-0.44
FATHMM_MKL	Uncertain	0.88	D
LIST_S2	Benign	0.68	T
M_CAP	Benign	0.019	T
MetaRNN	Benign	0.25	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	-0.52	N
PrimateAI	Benign	0.33	T
PROVEAN	Benign	-2.0	N
REVEL	Benign	0.19
Sift	Uncertain	0.0010	D
Sift4G	Uncertain	0.0080	D
Polyphen		0.59	P
Vest4		0.32
MutPred		0.46		Gain of disorder (P = 3e-04);
MVP		0.26
MPC		0.81
ClinPred		0.79	D
GERP RS		1.5
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.66
gMVP		0.87

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr17-79993847;