4-165337817-G-C

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_006745.5(MSMO1):ā€‹c.284G>Cā€‹(p.Trp95Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000149 in 1,613,492 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (ā˜…).

Frequency

Genomes: š‘“ 0.000013 ( 0 hom., cov: 33)
Exomes š‘“: 0.000015 ( 0 hom. )

Consequence

MSMO1
NM_006745.5 missense

Scores

6
9
4

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 8.14
Variant links:
Genes affected
MSMO1 (HGNC:10545): (methylsterol monooxygenase 1) Sterol-C4-mehtyl oxidase-like protein was isolated based on its similarity to the yeast ERG25 protein. It contains a set of putative metal binding motifs with similarity to that seen in a family of membrane desaturases-hydroxylases. The protein is localized to the endoplasmic reticulum membrane and is believed to function in cholesterol biosynthesis. Alternatively spliced transcript variants encoding distinct isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 4 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PP3
MetaRNN computational evidence supports a deleterious effect, 0.895

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
MSMO1NM_006745.5 linkuse as main transcriptc.284G>C p.Trp95Ser missense_variant 3/6 ENST00000261507.11 NP_006736.1
MSMO1XM_005263176.3 linkuse as main transcriptc.284G>C p.Trp95Ser missense_variant 3/6 XP_005263233.1
MSMO1NM_001017369.3 linkuse as main transcriptc.-110G>C 5_prime_UTR_variant 2/5 NP_001017369.1

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
MSMO1ENST00000261507.11 linkuse as main transcriptc.284G>C p.Trp95Ser missense_variant 3/61 NM_006745.5 ENSP00000261507 P1Q15800-1
MSMO1ENST00000504317.1 linkuse as main transcriptc.284G>C p.Trp95Ser missense_variant 3/51 ENSP00000423633
MSMO1ENST00000507013.5 linkuse as main transcriptc.284G>C p.Trp95Ser missense_variant 3/52 ENSP00000425241
MSMO1ENST00000393766.6 linkuse as main transcriptc.-110G>C 5_prime_UTR_variant 2/52 ENSP00000377361 Q15800-2

Frequencies

GnomAD3 genomes
AF:
0.0000131
AC:
2
AN:
152140
Hom.:
0
Cov.:
33
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:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000294
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.0000319
AC:
8
AN:
251148
Hom.:
0
AF XY:
0.0000442
AC XY:
6
AN XY:
135736
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.0000868
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000352
Gnomad OTH exome
AF:
0.000163
GnomAD4 exome
AF:
0.0000151
AC:
22
AN:
1461352
Hom.:
0
Cov.:
31
AF XY:
0.0000151
AC XY:
11
AN XY:
727004
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.0000895
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.0000144
Gnomad4 OTH exome
AF:
0.0000331
GnomAD4 genome
AF:
0.0000131
AC:
2
AN:
152140
Hom.:
0
Cov.:
33
AF XY:
0.0000135
AC XY:
1
AN XY:
74320
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.0000294
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.0000564
Hom.:
0
Bravo
AF:
0.0000340
ESP6500AA
AF:
0.00
AC:
0
ESP6500EA
AF:
0.000116
AC:
1
ExAC
AF:
0.00000824
AC:
1
EpiCase
AF:
0.000109
EpiControl
AF:
0.0000593

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

not specified Uncertain:1
Uncertain significance, criteria provided, single submitterclinical testingAmbry GeneticsApr 04, 2023The c.284G>C (p.W95S) alteration is located in exon 3 (coding exon 2) of the MSMO1 gene. This alteration results from a G to C substitution at nucleotide position 284, causing the tryptophan (W) at amino acid position 95 to be replaced by a serine (S). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Uncertain
0.55
BayesDel_addAF
Pathogenic
0.19
D
BayesDel_noAF
Pathogenic
0.23
CADD
Pathogenic
27
DANN
Uncertain
0.98
DEOGEN2
Uncertain
0.46
T;T;T
Eigen
Uncertain
0.67
Eigen_PC
Uncertain
0.64
FATHMM_MKL
Pathogenic
0.98
D
LIST_S2
Benign
0.85
D;D;D
M_CAP
Benign
0.050
D
MetaRNN
Pathogenic
0.89
D;D;D
MetaSVM
Benign
-0.62
T
MutationAssessor
Pathogenic
3.5
H;.;.
MutationTaster
Benign
1.0
D;D;D
PrimateAI
Uncertain
0.74
T
PROVEAN
Pathogenic
-11
D;D;D
REVEL
Uncertain
0.52
Sift
Uncertain
0.0010
D;D;D
Sift4G
Uncertain
0.0060
D;D;D
Polyphen
1.0
D;.;P
Vest4
0.95
MVP
0.57
MPC
1.3
ClinPred
0.76
D
GERP RS
5.8
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.7
Varity_R
0.93
gMVP
0.87

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

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs375770332; hg19: chr4-166258969; API