dbSNP rs931958752: DHODH:p.Arg60Ser (chr16-72012206-C-A) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_001361.5(DHODH):c.178C>A(p.Arg60Ser) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,886 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R60G) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

DHODH
NM_001361.5 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 3.89

Publications

0 publications found

Variant links:

Genes affected

DHODH (HGNC:2867): (dihydroorotate dehydrogenase (quinone)) The protein encoded by this gene catalyzes the fourth enzymatic step, the ubiquinone-mediated oxidation of dihydroorotate to orotate, in de novo pyrimidine biosynthesis. This protein is a mitochondrial protein located on the outer surface of the inner mitochondrial membrane. [provided by RefSeq, Jul 2008]

DHODH Gene-Disease associations (from GenCC):

postaxial acrofacial dysostosis
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Orphanet, Labcorp Genetics (formerly Invitae)

DHODH links:

ENSG00000294600 (HGNC:):

ENSG00000294600 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001361.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DHODH	NM_001361.5	MANE Select	c.178C>A	p.Arg60Ser	missense	Exon 2 of 9	NP_001352.2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
DHODH	ENST00000219240.9	TSL:1 MANE Select	c.178C>A	p.Arg60Ser	missense	Exon 2 of 9	ENSP00000219240.4	Q02127
DHODH	ENST00000894311.1		c.178C>A	p.Arg60Ser	missense	Exon 2 of 11	ENSP00000564370.1
DHODH	ENST00000894313.1		c.175C>A	p.Arg59Ser	missense	Exon 2 of 9	ENSP00000564372.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461886

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

727244

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.0000116

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53414

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1112010

Other (OTH)

AF:

0.00

AC:

AN:

60396

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.325

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.24

BayesDel_addAF

Uncertain

0.13

BayesDel_noAF

Uncertain

-0.050

CADD

Benign

(source)

DANN

Benign

0.90

DEOGEN2

Benign

0.16

Eigen

Benign

-0.25

Eigen_PC

Benign

-0.11

FATHMM_MKL

Benign

0.61

LIST_S2

Uncertain

0.96

M_CAP

Benign

0.081

MetaRNN

Uncertain

0.45

MetaSVM

Uncertain

-0.25

MutationAssessor

Uncertain

2.5

PhyloP100

3.9

PrimateAI

Benign

0.36

PROVEAN

Benign

-1.9

REVEL

Uncertain

0.37

Sift

Benign

0.75

Sift4G

Benign

0.78

Polyphen

0.037

Vest4

0.52

MutPred

0.55

Loss of methylation at R60 (P = 0.007)

MVP

0.94

MPC

0.22

ClinPred

0.60

GERP RS

4.9

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.6

Varity_R

0.41

gMVP

0.63

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.13

Details are displayed if max score is > 0.2

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over