18-36187553-C-T

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BP4_Strong

The NM_017947.4(MOCOS):c.14C>T(p.Ala5Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000968 in 1,239,052 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Synonymous variant affecting the same amino acid position (i.e. A5A) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000010 ( 0 hom. )

Consequence

MOCOS
NM_017947.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: -0.307

Publications

0 publications found

Variant links:

Genes affected

MOCOS (HGNC:18234): (molybdenum cofactor sulfurase) This gene encodes an enzyme that sulfurates the molybdenum cofactor which is required for activation of the xanthine dehydrogenase (XDH) and aldehyde oxidase (AO) enzymes. XDH catalyzes the conversion of hypoxanthine to uric acid via xanthine, as well as the conversion of allopurinol to oxypurinol, and pyrazinamide to 5-hydroxy pyrazinamide. Mutations in this gene cause the metabolic disorder classical xanthinuria type II which is characterized by the loss of XDH/XO and AO enzyme activity, decreased levels of uric acid in the urine, increased levels of xanthine and hypoxanthine in the serum and urine, formation of xanthine stones in the urinary tract, and myositis due to tissue deposition of xanthine. [provided by RefSeq, Apr 2017]

MOCOS links:

COSMOC (HGNC:51610): (cell fate and sterol metabolism associated divergent transcript of MOCOS)

COSMOC links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -4 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.06052205).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MOCOS	NM_017947.4 link	c.14C>T	p.Ala5Val	missense_variant	Exon 1 of 15	ENST00000261326.6	NP_060417.4	Q96EN8
COSMOC	NR_134605.1 link	n.-118G>A		upstream_gene_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
MOCOS	ENST00000261326.6 link	c.14C>T	p.Ala5Val	missense_variant	Exon 1 of 15	1	NM_017947.4	ENSP00000261326.4	Q96EN8
COSMOC	ENST00000568654.3 link	n.-79G>A		upstream_gene_variant		1
COSMOC	ENST00000687261.3 link	n.-78G>A		upstream_gene_variant
COSMOC	ENST00000738210.1 link	n.-133G>A		upstream_gene_variant

Frequencies

GnomAD3 genomes

AF:

0.00000658

AC:

AN:

152084

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:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.00

AC:

AN:

13770

AF XY:

0.00

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 FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000101

AC:

AN:

1086968

Hom.:

Cov.:

AF XY:

0.0000155

AC XY:

AN XY:

514700

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

23148

American (AMR)

AF:

0.00

AC:

AN:

8900

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

14338

East Asian (EAS)

AF:

0.00

AC:

AN:

26826

South Asian (SAS)

AF:

0.000486

AC:

AN:

20562

European-Finnish (FIN)

AF:

0.00

AC:

AN:

22892

Middle Eastern (MID)

AF:

0.00

AC:

AN:

3060

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

923364

Other (OTH)

AF:

0.0000228

AC:

AN:

43878

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.470

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.00000658

AC:

AN:

152084

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74272

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41414

American (AMR)

AF:

0.00

AC:

AN:

15270

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5162

South Asian (SAS)

AF:

0.000207

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10614

Middle Eastern (MID)

AF:

0.00

AC:

AN:

314

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68010

Other (OTH)

AF:

0.00

AC:

AN:

2090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.575

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Xanthinuria type II

Uncertain:2

Feb 09, 2022

Fulgent Genetics, Fulgent Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Jan 14, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces alanine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 5 of the MOCOS protein (p.Ala5Val). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with MOCOS-related conditions. ClinVar contains an entry for this variant (Variation ID: 654063). Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Tolerated"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0". The valine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.20

BayesDel_addAF

Benign

-0.31

BayesDel_noAF

Benign

-0.69

CADD

Benign

(source)

DANN

Uncertain

0.98

DEOGEN2

Benign

0.017

Eigen

Benign

-1.2

Eigen_PC

Benign

-1.2

FATHMM_MKL

Benign

0.21

LIST_S2

Benign

0.35

M_CAP

Benign

0.032

MetaRNN

Benign

0.061

MetaSVM

Benign

-0.99

MutationAssessor

Benign

1.4

PhyloP100

-0.31

PrimateAI

Uncertain

0.61

PROVEAN

Benign

0.0

REVEL

Benign

0.0060

Sift

Benign

0.19

Sift4G

Uncertain

0.035

Polyphen

0.0070

Vest4

0.095

MutPred

0.19

Loss of disorder (P = 0.0407);

MVP

0.18

MPC

1.5

ClinPred

0.058

GERP RS

1.3

PromoterAI

-0.032

Neutral

(source)

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

2.1

Varity_R

0.027

gMVP

0.32

Mutation Taster

=97/3

polymorphism

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

18-36187553-C-T

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over