19-48939611-A-G

Variant summary

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

The NM_014475.4(DHDH):c.529A>G(p.Ile177Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000694 in 1,614,032 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00012 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000064 ( 0 hom. )

Consequence

DHDH
NM_014475.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.964

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 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=0.05123183).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
DHDH	NM_014475.4 linkuse as main transcript	c.529A>G	p.Ile177Val	missense_variant	4/7	ENST00000221403.7
DHDH	XM_017026598.2 linkuse as main transcript	c.280A>G	p.Ile94Val	missense_variant	4/7
DHDH	XM_047438617.1 linkuse as main transcript	c.529A>G	p.Ile177Val	missense_variant	4/5
DHDH	XM_005258748.5 linkuse as main transcript	c.193A>G	p.Ile65Val	missense_variant	3/6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris
DHDH	ENST00000221403.7 linkuse as main transcript	c.529A>G	p.Ile177Val	missense_variant	4/7	1	NM_014475.4	P1
DHDH	ENST00000522614.5 linkuse as main transcript	c.529A>G	p.Ile177Val	missense_variant	4/5	5
DHDH	ENST00000523250.5 linkuse as main transcript	c.203-2829A>G		intron_variant		5
DHDH	ENST00000520557.1 linkuse as main transcript	c.329A>G	p.His110Arg	missense_variant, NMD_transcript_variant	3/5	5

Frequencies

GnomAD3 genomes

AF:

0.000125

AC:

AN:

152156

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000982

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:

0.000479

GnomAD3 exomes

AF:

0.0000438

AC:

AN:

251418

Hom.:

AF XY:

0.0000442

AC XY:

AN XY:

135898

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000544

Gnomad SAS exome

AF:

0.0000980

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000528

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.0000636

AC:

AN:

1461876

Hom.:

Cov.:

AF XY:

0.0000591

AC XY:

AN XY:

727232

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000179

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.000104

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000558

Gnomad4 OTH exome

AF:

0.000149

GnomAD4 genome

AF:

0.000125

AC:

AN:

152156

Hom.:

Cov.:

AF XY:

0.000175

AC XY:

AN XY:

74344

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000982

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:

0.000479

Alfa

AF:

0.000118

Hom.:

Bravo

AF:

0.000200

ExAC

AF:

0.0000330

AC:

EpiCase

AF:

0.0000545

EpiControl

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

Dec 17, 2023

The c.529A>G (p.I177V) alteration is located in exon 4 (coding exon 4) of the DHDH gene. This alteration results from a A to G substitution at nucleotide position 529, causing the isoleucine (I) at amino acid position 177 to be replaced by a valine (V). 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

0.17

BayesDel_addAF

Benign

-0.51

BayesDel_noAF

Benign

-0.76

Cadd

Benign

0.0030

Dann

Benign

0.57

DEOGEN2

Benign

0.024

T;.

Eigen

Benign

-2.4

Eigen_PC

Benign

-2.5

FATHMM_MKL

Benign

0.024

LIST_S2

Benign

0.63

T;T

M_CAP

Benign

0.0025

MetaRNN

Benign

0.051

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.24

N;.

MutationTaster

Benign

1.0

D;N;N

PrimateAI

Benign

0.34

PROVEAN

Benign

-0.75

N;N

REVEL

Benign

0.055

Sift

Benign

0.13

T;T

Sift4G

Benign

0.17

T;T

Polyphen

0.0

B;.

Vest4

0.071

MVP

0.072

MPC

0.11

ClinPred

0.050

GERP RS

-10

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.034

gMVP

0.39

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

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