Genetic Variant UROC1:p.Leu70Pro (chr3-126510712-A-G) – ACMG Classification: Uncertain_significance (5 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 5 ACMG points: 5P and 0B. PM2PP3_ModeratePP5

The NM_144639.3(UROC1):c.209T>C(p.Leu70Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000242 in 1,614,072 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars).

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000023 ( 0 hom. )

Consequence

UROC1
NM_144639.3 missense

Scores

Clinical Significance

Pathogenic no assertion criteria provided P:1

Conservation

PhyloP100: 1.29

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 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 5 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.874

PP5

Variant 3-126510712-A-G is Pathogenic according to our data. Variant chr3-126510712-A-G is described in ClinVar as [Pathogenic]. Clinvar id is 408.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
UROC1	NM_144639.3 link	c.209T>C	p.Leu70Pro	missense_variant	Exon 2 of 20	ENST00000290868.7	NP_653240.1	Q96N76-1
UROC1	NM_001165974.2 link	c.209T>C	p.Leu70Pro	missense_variant	Exon 2 of 21		NP_001159446.1	Q96N76-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
UROC1	ENST00000290868.7 link	c.209T>C	p.Leu70Pro	missense_variant	Exon 2 of 20	1	NM_144639.3	ENSP00000290868.2		Q96N76-1
UROC1	ENST00000383579.3 link	c.209T>C	p.Leu70Pro	missense_variant	Exon 2 of 21	1		ENSP00000373073.3		Q96N76-2

Frequencies

GnomAD3 genomes

AF:

0.0000328

AC:

AN:

152216

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

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:

0.0000147

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.0000279

AC:

AN:

251038

Hom.:

AF XY:

0.00000736

AC XY:

AN XY:

135804

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000579

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:

0.0000353

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.0000233

AC:

AN:

1461856

Hom.:

Cov.:

AF XY:

0.0000151

AC XY:

AN XY:

727230

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000671

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:

0.0000261

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.0000328

AC:

AN:

152216

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74364

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000196

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.000478

Alfa

AF:

0.0000896

Hom.:

Bravo

AF:

0.0000491

ExAC

AF:

0.0000165

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.000119

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

LINK: link

Submissions by phenotype

Urocanate hydratase deficiency

Pathogenic:1

Jun 01, 2009

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.59

BayesDel_addAF

Benign

-0.018

BayesDel_noAF

Benign

-0.090

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.032

T;.

Eigen

Benign

-0.55

Eigen_PC

Benign

-0.54

FATHMM_MKL

Benign

0.65

LIST_S2

Uncertain

0.96

D;D

M_CAP

Benign

0.031

MetaRNN

Pathogenic

0.87

D;D

MetaSVM

Benign

-0.87

MutationAssessor

Benign

1.5

L;L

PrimateAI

Benign

0.35

PROVEAN

Benign

-0.030

N;N

REVEL

Benign

0.28

Sift

Benign

0.033

D;D

Sift4G

Benign

0.13

T;T

Polyphen

0.091

B;.

Vest4

0.84

MutPred

0.74

Gain of loop (P = 0.0045);Gain of loop (P = 0.0045);

MVP

0.58

MPC

0.28

ClinPred

0.27

GERP RS

0.39

Varity_R

0.18

gMVP

0.83

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