Genetic Variant UROC1:p.Arg633Gln (chr3-126482478-C-T) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PP3_Moderate

The NM_144639.3(UROC1):c.1898G>A(p.Arg633Gln) variant causes a missense change. The variant allele was found at a frequency of 0.0000806 in 1,613,864 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00015 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000073 ( 0 hom. )

Consequence

UROC1
NM_144639.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.90

Publications

0 publications found

Variant links:

Genes affected

UROC1 (HGNC:26444): (urocanate hydratase 1) This gene encodes an enzyme involved in the second step of histidine catabolism, metabolizing urocanic acid to formiminoglutamic acid. Deficiency of this enzyme results in urocanic aciduria, and is an apparent cause of mental retardation. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Apr 2021]

UROC1 Gene-Disease associations (from GenCC):

urocanic aciduria
Inheritance: AR Classification: DEFINITIVE, MODERATE, SUPPORTIVE, LIMITED Submitted by: G2P, ClinGen, Labcorp Genetics (formerly Invitae), Orphanet

UROC1 links:

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ACMG classification

Classification was made for transcript

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

PP3

MetaRNN computational evidence supports a deleterious effect, 0.846

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_144639.3. 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
	UROC1	NM_144639.3	MANE Select	c.1898G>A	p.Arg633Gln	missense	Exon 20 of 20	NP_653240.1	Q96N76-1
	UROC1	NM_001165974.2		c.2078G>A	p.Arg693Gln	missense	Exon 21 of 21	NP_001159446.1	Q96N76-2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
UROC1	ENST00000290868.7	TSL:1 MANE Select	c.1898G>A	p.Arg633Gln	missense	Exon 20 of 20	ENSP00000290868.2	Q96N76-1
UROC1	ENST00000383579.3	TSL:1	c.2078G>A	p.Arg693Gln	missense	Exon 21 of 21	ENSP00000373073.3	Q96N76-2
UROC1	ENST00000875183.1		c.1970G>A	p.Arg657Gln	missense	Exon 21 of 21	ENSP00000545242.1

Frequencies

GnomAD3 genomes

AF:

0.000151

AC:

AN:

152182

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000434

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

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:

0.0000294

Gnomad OTH

AF:

0.000478

GnomAD2 exomes

AF:

0.0000523

AC:

AN:

248488

AF XY:

0.0000519

show subpopulations

Gnomad AFR exome

AF:

0.000431

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000451

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000732

AC:

107

AN:

1461682

Hom.:

Cov.:

AF XY:

0.0000633

AC XY:

AN XY:

727136

show subpopulations

African (AFR)

AF:

0.000269

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44718

Ashkenazi Jewish (ASJ)

AF:

0.0000383

AC:

AN:

26134

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39698

South Asian (SAS)

AF:

0.0000232

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53238

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000827

AC:

AN:

1111996

Other (OTH)

AF:

0.0000331

AC:

AN:

60392

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.468

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

AF:

0.000151

AC:

AN:

152182

Hom.:

Cov.:

AF XY:

0.000121

AC XY:

AN XY:

74332

show subpopulations

African (AFR)

AF:

0.000434

AC:

AN:

41448

American (AMR)

AF:

0.000131

AC:

AN:

15292

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3466

East Asian (EAS)

AF:

0.00

AC:

AN:

5176

South Asian (SAS)

AF:

0.00

AC:

AN:

4834

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10622

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000294

AC:

AN:

68024

Other (OTH)

AF:

0.000478

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.460

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome 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

Alfa

AF:

0.0000579

Hom.:

Bravo

AF:

0.000136

ExAC

AF:

0.0000494

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.94

BayesDel_addAF

Uncertain

0.12

BayesDel_noAF

Pathogenic

0.27

CADD

Pathogenic

(source)

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.45

Eigen

Pathogenic

0.81

Eigen_PC

Pathogenic

0.71

FATHMM_MKL

Uncertain

0.96

LIST_S2

Uncertain

0.95

M_CAP

Uncertain

0.19

MetaRNN

Pathogenic

0.85

MetaSVM

Uncertain

0.26

MutationAssessor

Pathogenic

4.5

PhyloP100

6.9

PrimateAI

Benign

0.38

PROVEAN

Uncertain

-3.5

REVEL

Pathogenic

0.68

Sift

Pathogenic

0.0

Sift4G

Pathogenic

0.0

Polyphen

1.0

Vest4

0.89

MVP

0.88

MPC

0.41

ClinPred

0.95

GERP RS

4.6

Varity_R

0.78

gMVP

0.95

Mutation Taster

=56/44

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over