19-48939631-G-C

Variant names:

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_014475.4(DHDH):c.549G>C(p.Gln183His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000297 in 1,613,866 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 0.000020 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000031 ( 0 hom. )

Consequence

DHDH
NM_014475.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.39

Variant links:

Genes affected

DHDH (HGNC:17887): (dihydrodiol dehydrogenase) This gene encodes an enzyme that belongs to the family of dihydrodiol dehydrogenases, which exist in multiple forms in mammalian tissues and are involved in the metabolism of xenobiotics and sugars. These enzymes catalyze the NADP1-linked oxidation of transdihydrodiols of aromatic hydrocarbons to corresponding catechols. This enzyme is a dimeric dihydrodiol dehydrogenase, and it differs from monomeric dihydrodiol dehydrogenases in its high substrate specificity for trans-dihydrodiols of aromatic hydrocarbons in the oxidative direction. [provided by RefSeq, Jul 2008]

DHDH links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.2783242).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DHDH	NM_014475.4 link	c.549G>C	p.Gln183His	missense_variant	Exon 4 of 7	ENST00000221403.7	NP_055290.1	Q9UQ10
DHDH	XM_017026598.2 link	c.300G>C	p.Gln100His	missense_variant	Exon 4 of 7		XP_016882087.1
DHDH	XM_047438617.1 link	c.549G>C	p.Gln183His	missense_variant	Exon 4 of 5		XP_047294573.1
DHDH	XM_005258748.5 link	c.213G>C	p.Gln71His	missense_variant	Exon 3 of 6		XP_005258805.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
DHDH	ENST00000221403.7 link	c.549G>C	p.Gln183His	missense_variant	Exon 4 of 7	1	NM_014475.4	ENSP00000221403.2	Q9UQ10
DHDH	ENST00000522614.5 link	c.549G>C	p.Gln183His	missense_variant	Exon 4 of 5	5		ENSP00000428672.1	E5RGT8
DHDH	ENST00000523250.5 link	c.203-2809G>C		intron_variant	Intron 2 of 4	5		ENSP00000428935.1	E5RFE0
DHDH	ENST00000520557.1 link	n.349G>C		non_coding_transcript_exon_variant	Exon 3 of 5	5		ENSP00000430360.1	H0YBU7

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152164

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000796

AC:

AN:

251356

Hom.:

AF XY:

0.0000147

AC XY:

AN XY:

135864

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:

0.00

Gnomad NFE exome

AF:

0.0000176

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000308

AC:

AN:

1461702

Hom.:

Cov.:

AF XY:

0.0000344

AC XY:

AN XY:

727130

show subpopulations

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:

0.0000396

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152164

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74334

show subpopulations

Gnomad4 AFR

AF:

0.00

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:

0.0000441

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000113

ExAC

AF:

0.00000824

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Dec 03, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.549G>C (p.Q183H) alteration is located in exon 4 (coding exon 4) of the DHDH gene. This alteration results from a G to C substitution at nucleotide position 549, causing the glutamine (Q) at amino acid position 183 to be replaced by a histidine (H). 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

0.55

BayesDel_addAF

Pathogenic

0.16

BayesDel_noAF

Uncertain

0.010

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.14

T;.

Eigen

Benign

0.077

Eigen_PC

Benign

0.013

FATHMM_MKL

Uncertain

0.92

LIST_S2

Benign

0.82

T;D

M_CAP

Benign

0.0078

MetaRNN

Benign

0.28

T;T

MetaSVM

Benign

-1.1

MutationAssessor

Uncertain

2.2

M;.

PrimateAI

Uncertain

0.59

PROVEAN

Uncertain

-4.3

D;D

REVEL

Benign

0.27

Sift

Uncertain

0.022

D;D

Sift4G

Uncertain

0.022

D;T

Polyphen

0.99

D;.

Vest4

0.35

MutPred

0.67

Loss of helix (P = 0.0104);Loss of helix (P = 0.0104);

MVP

0.38

MPC

0.58

ClinPred

0.97

GERP RS

3.0

Varity_R

0.38

gMVP

0.78

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

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