Genetic Variant MOCOS:p.Ser22Ser (chr18-36187605-C-T) – ACMG Classification: Likely_benign (-3 pts)

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2BP4_StrongBP7

The NM_017947.4(MOCOS):c.66C>T(p.Ser22Ser) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000821 in 1,096,696 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: not found (cov: 34)

Exomes 𝑓: 0.0000082 ( 0 hom. )

Consequence

MOCOS
NM_017947.4 synonymous

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.311

Publications

12 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:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.56).

BP7

Synonymous conserved (PhyloP=-0.311 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MOCOS	NM_017947.4 link	c.66C>T	p.Ser22Ser	synonymous_variant	Exon 1 of 15	ENST00000261326.6	NP_060417.4	Q96EN8
COSMOC	NR_134605.1 link	n.-170G>A		upstream_gene_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
MOCOS	ENST00000261326.6 link	c.66C>T	p.Ser22Ser	synonymous_variant	Exon 1 of 15	1	NM_017947.4	ENSP00000261326.4	Q96EN8
COSMOC	ENST00000568654.3 link	n.-131G>A		upstream_gene_variant		1
COSMOC	ENST00000687261.3 link	n.-130G>A		upstream_gene_variant
COSMOC	ENST00000738210.1 link	n.-185G>A		upstream_gene_variant

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00

AC:

AN:

17482

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:

0.00000821

AC:

AN:

1096696

Hom.:

Cov.:

AF XY:

0.0000154

AC XY:

AN XY:

520420

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

23458

American (AMR)

AF:

0.00

AC:

AN:

9116

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

14504

East Asian (EAS)

AF:

0.00

AC:

AN:

27196

South Asian (SAS)

AF:

0.00

AC:

AN:

22740

European-Finnish (FIN)

AF:

0.00

AC:

AN:

23624

Middle Eastern (MID)

AF:

0.00

AC:

AN:

3544

European-Non Finnish (NFE)

AF:

0.00000862

AC:

AN:

928230

Other (OTH)

AF:

0.0000226

AC:

AN:

44284

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

143

Bravo

AF:

0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.56

CADD

Benign

7.9

(source)

DANN

Benign

0.94

PhyloP100

-0.31

PromoterAI

0.064

Neutral

(source)

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

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18-36187605-C-T

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over