5-53097591-C-T

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_Strong BP6_Moderate BA1

The NM_004531.5(MOCS2):c.*1011G>A variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.113 in 151,996 control chromosomes in the GnomAD database, including 1,210 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

• Frequency:
  • Genomes: 𝑓 0.11 (1210 hom., cov: 32)
  • Failed GnomAD Quality Control
• Consequence: MOCS2 NM_004531.5 3_prime_UTR
• Clinical Significance: Benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -0.243

Genes affected

MOCS2 (HGNC:7193): (molybdenum cofactor synthesis 2) Eukaryotic molybdoenzymes use a unique molybdenum cofactor (MoCo) consisting of a pterin, termed molybdopterin, and the catalytically active metal molybdenum. MoCo is synthesized from precursor Z by the heterodimeric enzyme molybdopterin synthase. The large and small subunits of molybdopterin synthase are both encoded from this gene by overlapping open reading frames. The proteins were initially thought to be encoded from a bicistronic transcript. They are now thought to be encoded from monocistronic transcripts. Alternatively spliced transcripts have been found for this locus that encode the large and small subunits. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Benign. Variant got -14 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.92).
• BP6: Variant 5-53097591-C-T is Benign according to our data. Variant chr5-53097591-C-T is described in ClinVar as [Benign]. Clinvar id is 907208.Status of the report is criteria_provided_single_submitter, 1 stars.
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.19 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
MOCS2	NM_004531.5	c.*1011G>A		3_prime_UTR_variant	7/7	ENST00000396954.8
MOCS2	NM_176806.4	c.*1498G>A		3_prime_UTR_variant	7/7	ENST00000450852.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MOCS2	ENST00000396954.8	c.*1011G>A		3_prime_UTR_variant	7/7	1	NM_004531.5	P1
MOCS2	ENST00000450852.8	c.*1498G>A		3_prime_UTR_variant	7/7	1	NM_176806.4
MOCS2	ENST00000361377.8	c.*1347G>A		3_prime_UTR_variant	6/6	4

Frequencies

GnomAD3 genomes AF: 0.113 AC: 17178 AN: 151878 Hom.: 1201 Cov.: 32

Gnomad AFR AF: 0.193

Gnomad AMI AF: 0.0385

Gnomad AMR AF: 0.0845

Gnomad ASJ AF: 0.111

Gnomad EAS AF: 0.0208

Gnomad SAS AF: 0.0871

Gnomad FIN AF: 0.0549

Gnomad MID AF: 0.159

Gnomad NFE AF: 0.0898

Gnomad OTH AF: 0.123

GnomAD4 exome Data not reliable, filtered out with message: AC0 AC: 0 AN: 0 Hom.: 0 Cov.: 0 AC XY: 0 AN XY: 0

GnomAD4 genome AF: 0.113 AC: 17228 AN: 151996 Hom.: 1210 Cov.: 32 AF XY: 0.109 AC XY: 8099 AN XY: 74310

Gnomad4 AFR AF: 0.193

Gnomad4 AMR AF: 0.0844

Gnomad4 ASJ AF: 0.111

Gnomad4 EAS AF: 0.0208

Gnomad4 SAS AF: 0.0869

Gnomad4 FIN AF: 0.0549

Gnomad4 NFE AF: 0.0898

Gnomad4 OTH AF: 0.124

Alfa AF: 0.0996 Hom.: 115

Bravo AF: 0.119

Asia WGS AF: 0.0850 AC: 297 AN: 3478

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

Sulfite oxidase deficiency due to molybdenum cofactor deficiency type B Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.92
Cadd	Benign	0.31
Dann	Benign	0.70

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs1445940; hg19: chr5-52393421;