rs149639104

Variant summary

Our verdict is Benign. The variant received -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BS1BS2

The NM_017947.4(MOCOS):​c.309G>A​(p.Ala103Ala) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00584 in 1,613,594 control chromosomes in the GnomAD database, including 61 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.0042 ( 3 hom., cov: 33)
Exomes 𝑓: 0.0060 ( 58 hom. )

Consequence

MOCOS
NM_017947.4 synonymous

Scores

2

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: -0.817

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 Gene-Disease associations (from GenCC):
  • xanthinuria type II
    Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: ClinGen, Labcorp Genetics (formerly Invitae), Orphanet

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -21 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.74).
BP6
Variant 18-36199692-G-A is Benign according to our data. Variant chr18-36199692-G-A is described in ClinVar as Benign. ClinVar VariationId is 536216.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BP7
Synonymous conserved (PhyloP=-0.817 with no splicing effect.
BS1
Variant frequency is greater than expected in population sas. GnomAd4 allele frequency = 0.00424 (646/152224) while in subpopulation SAS AF = 0.0154 (74/4814). AF 95% confidence interval is 0.0126. There are 3 homozygotes in GnomAd4. There are 324 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.
BS2
High Homozygotes in GnomAd4 at 3 AR gene

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
MOCOSNM_017947.4 linkc.309G>A p.Ala103Ala synonymous_variant Exon 4 of 15 ENST00000261326.6 NP_060417.4 Q96EN8

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
MOCOSENST00000261326.6 linkc.309G>A p.Ala103Ala synonymous_variant Exon 4 of 15 1 NM_017947.4 ENSP00000261326.4 Q96EN8

Frequencies

GnomAD3 genomes
AF:
0.00425
AC:
647
AN:
152106
Hom.:
3
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.00133
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00386
Gnomad ASJ
AF:
0.00548
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.0156
Gnomad FIN
AF:
0.00434
Gnomad MID
AF:
0.00949
Gnomad NFE
AF:
0.00560
Gnomad OTH
AF:
0.00430
GnomAD2 exomes
AF:
0.00613
AC:
1538
AN:
250994
AF XY:
0.00715
show subpopulations
Gnomad AFR exome
AF:
0.000862
Gnomad AMR exome
AF:
0.00136
Gnomad ASJ exome
AF:
0.00526
Gnomad EAS exome
AF:
0.000218
Gnomad FIN exome
AF:
0.00574
Gnomad NFE exome
AF:
0.00595
Gnomad OTH exome
AF:
0.00653
GnomAD4 exome
AF:
0.00601
AC:
8780
AN:
1461370
Hom.:
58
Cov.:
31
AF XY:
0.00643
AC XY:
4676
AN XY:
727018
show subpopulations
African (AFR)
AF:
0.000837
AC:
28
AN:
33456
American (AMR)
AF:
0.00165
AC:
74
AN:
44724
Ashkenazi Jewish (ASJ)
AF:
0.00471
AC:
123
AN:
26136
East Asian (EAS)
AF:
0.000151
AC:
6
AN:
39700
South Asian (SAS)
AF:
0.0194
AC:
1675
AN:
86236
European-Finnish (FIN)
AF:
0.00510
AC:
272
AN:
53356
Middle Eastern (MID)
AF:
0.0104
AC:
56
AN:
5400
European-Non Finnish (NFE)
AF:
0.00557
AC:
6189
AN:
1112008
Other (OTH)
AF:
0.00592
AC:
357
AN:
60354
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.470
Heterozygous variant carriers
0
539
1077
1616
2154
2693
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Exome Hom
Variant carriers
0
240
480
720
960
1200
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
AF:
0.00424
AC:
646
AN:
152224
Hom.:
3
Cov.:
33
AF XY:
0.00435
AC XY:
324
AN XY:
74440
show subpopulations
African (AFR)
AF:
0.00132
AC:
55
AN:
41528
American (AMR)
AF:
0.00386
AC:
59
AN:
15300
Ashkenazi Jewish (ASJ)
AF:
0.00548
AC:
19
AN:
3468
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5170
South Asian (SAS)
AF:
0.0154
AC:
74
AN:
4814
European-Finnish (FIN)
AF:
0.00434
AC:
46
AN:
10610
Middle Eastern (MID)
AF:
0.0102
AC:
3
AN:
294
European-Non Finnish (NFE)
AF:
0.00560
AC:
381
AN:
68014
Other (OTH)
AF:
0.00426
AC:
9
AN:
2114
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.495
Heterozygous variant carriers
0
37
74
111
148
185
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Genome Hom
Variant carriers
0
20
40
60
80
100
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
Alfa
AF:
0.00498
Hom.:
1
Bravo
AF:
0.00368
Asia WGS
AF:
0.00375
AC:
13
AN:
3478
EpiCase
AF:
0.00562
EpiControl
AF:
0.00545

ClinVar

Significance: Benign
Submissions summary: Benign:2
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not provided Benign:1
-
Breakthrough Genomics, Breakthrough Genomics
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:not provided

- -

Xanthinuria type II Benign:1
Jan 14, 2025
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.74
CADD
Benign
0.39
DANN
Benign
0.45
PhyloP100
-0.82
Mutation Taster
=100/0
polymorphism

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.070
Details are displayed if max score is > 0.2

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

Publications

Other links and lift over

dbSNP: rs149639104; hg19: chr18-33779655; COSMIC: COSV54342307; API