18-36187535-G-A

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BA1

The NM_017947.4(MOCOS):c.-5G>A variant causes a 5 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0731 in 1,235,088 control chromosomes in the GnomAD database, including 3,643 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

• Frequency:
  • Genomes: 𝑓 0.054 (327 hom., cov: 34)
  • Exomes 𝑓: 0.076 (3316 hom.)
• Consequence: MOCOS NM_017947.4 5_prime_UTR
• Clinical Significance: Benign criteria provided, multiple submitters, no conflicts B:2
• Conservation: PhyloP100: -0.693

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]

ACMG classification

Verdict is Benign. Variant got -20 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.72).
• BP6: Variant 18-36187535-G-A is Benign according to our data. Variant chr18-36187535-G-A is described in ClinVar as [Benign]. Clinvar id is 1296803.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BA1: GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.155 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
MOCOS	NM_017947.4	c.-5G>A		5_prime_UTR_variant	1/15	ENST00000261326.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MOCOS	ENST00000261326.6	c.-5G>A		5_prime_UTR_variant	1/15	1	NM_017947.4	P1

Frequencies

GnomAD3 genomes AF: 0.0537 AC: 8176 AN: 152138 Hom.: 327 Cov.: 34

Gnomad AFR AF: 0.0151

Gnomad AMI AF: 0.125

Gnomad AMR AF: 0.0262

Gnomad ASJ AF: 0.0445

Gnomad EAS AF: 0.164

Gnomad SAS AF: 0.0695

Gnomad FIN AF: 0.0578

Gnomad MID AF: 0.0414

Gnomad NFE AF: 0.0732

Gnomad OTH AF: 0.0449

GnomAD3 exomes AF: 0.0761 AC: 673 AN: 8846 Hom.: 31 AF XY: 0.0761 AC XY: 375 AN XY: 4926

Gnomad AFR exome AF: 0.00977

Gnomad AMR exome AF: 0.0437

Gnomad ASJ exome AF: 0.0522

Gnomad EAS exome AF: 0.197

Gnomad SAS exome AF: 0.0672

Gnomad FIN exome AF: 0.0429

Gnomad NFE exome AF: 0.0844

Gnomad OTH exome AF: 0.0692

GnomAD4 exome AF: 0.0758 AC: 82093 AN: 1082838 Hom.: 3316 Cov.: 34 AF XY: 0.0758 AC XY: 38844 AN XY: 512262

Gnomad4 AFR exome AF: 0.0102

Gnomad4 AMR exome AF: 0.0241

Gnomad4 ASJ exome AF: 0.0434

Gnomad4 EAS exome AF: 0.141

Gnomad4 SAS exome AF: 0.0657

Gnomad4 FIN exome AF: 0.0598

Gnomad4 NFE exome AF: 0.0777

Gnomad4 OTH exome AF: 0.0663

GnomAD4 genome AF: 0.0537 AC: 8173 AN: 152250 Hom.: 327 Cov.: 34 AF XY: 0.0535 AC XY: 3982 AN XY: 74430

Gnomad4 AFR AF: 0.0150

Gnomad4 AMR AF: 0.0261

Gnomad4 ASJ AF: 0.0445

Gnomad4 EAS AF: 0.164

Gnomad4 SAS AF: 0.0695

Gnomad4 FIN AF: 0.0578

Gnomad4 NFE AF: 0.0732

Gnomad4 OTH AF: 0.0444

Alfa AF: 0.0304 Hom.: 20

Bravo AF: 0.0509

Asia WGS AF: 0.0760 AC: 264 AN: 3476

ClinVar

Significance: Benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Benign:1

Benign, criteria provided, single submitter

clinical testing

GeneDx

Nov 12, 2018

- -

MOCOS-related disorder Benign:1

Benign, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

Dec 05, 2019

This variant is classified as benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.72
Cadd	Benign	6.6
Dann	Benign	0.77
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.0

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

Other links and lift over

dbSNP: rs117090508; hg19: chr18-33767498;