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4-165337785-G-A

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 2P and 6B. PM2BP4_StrongBP6_Moderate

The NM_006745.5(MSMO1):c.256-4G>A variant causes a splice region, splice polypyrimidine tract, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000397 in 1,613,172 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.000046 ( 0 hom., cov: 33)
Exomes 𝑓: 0.000039 ( 0 hom. )

Consequence

MSMO1
NM_006745.5 splice_region, splice_polypyrimidine_tract, intron

Scores

2
Splicing: ADA: 0.00001787
2

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: -0.554
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 Likely_benign. Variant got -4 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.84).
BP6
Variant 4-165337785-G-A is Benign according to our data. Variant chr4-165337785-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 1902633.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
MSMO1NM_006745.5 linkuse as main transcriptc.256-4G>A splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant ENST00000261507.11
MSMO1NM_001017369.3 linkuse as main transcriptc.-138-4G>A splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant
MSMO1XM_005263176.3 linkuse as main transcriptc.256-4G>A splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
MSMO1ENST00000261507.11 linkuse as main transcriptc.256-4G>A splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant 1 NM_006745.5 P1Q15800-1
MSMO1ENST00000504317.1 linkuse as main transcriptc.256-4G>A splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant 1
MSMO1ENST00000393766.6 linkuse as main transcriptc.-138-4G>A splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant 2 Q15800-2
MSMO1ENST00000507013.5 linkuse as main transcriptc.256-4G>A splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant 2

Frequencies

GnomAD3 genomes
AF:
0.0000460
AC:
7
AN:
152162
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.0000241
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:
0.0000882
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.0000359
AC:
9
AN:
251010
Hom.:
0
AF XY:
0.0000590
AC XY:
8
AN XY:
135652
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.0000544
Gnomad SAS exome
AF:
0.0000654
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000529
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000390
AC:
57
AN:
1461010
Hom.:
0
Cov.:
31
AF XY:
0.0000427
AC XY:
31
AN XY:
726842
show subpopulations
Gnomad4 AFR exome
AF:
0.000120
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.0000253
Gnomad4 SAS exome
AF:
0.0000348
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.0000369
Gnomad4 OTH exome
AF:
0.0000994
GnomAD4 genome
AF:
0.0000460
AC:
7
AN:
152162
Hom.:
0
Cov.:
33
AF XY:
0.0000538
AC XY:
4
AN XY:
74326
show subpopulations
Gnomad4 AFR
AF:
0.0000241
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:
0.0000882
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.0000847
Hom.:
0
Bravo
AF:
0.0000907

ClinVar

Significance: Likely benign
Submissions summary: Benign:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

not provided Benign:1
Likely benign, criteria provided, single submitterclinical testingInvitaeSep 06, 2022- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.84
Cadd
Benign
0.18
Dann
Benign
0.42
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.1

Splicing

Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Benign
0.000018
dbscSNV1_RF
Benign
0.0060
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: rs369538193; hg19: chr4-166258937; API