1-171283148-A-G

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_StrongBP6BP7BA1

The NM_001282693.2(FMO1):ā€‹c.1188A>Gā€‹(p.Val396Val) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.149 in 1,538,742 control chromosomes in the GnomAD database, including 23,758 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in Lovd as Likely benign (no stars).

Frequency

Genomes: š‘“ 0.24 ( 6923 hom., cov: 30)
Exomes š‘“: 0.14 ( 16835 hom. )

Consequence

FMO1
NM_001282693.2 synonymous

Scores

2

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -2.87
Variant links:
Genes affected
FMO1 (HGNC:3769): (flavin containing dimethylaniline monoxygenase 1) Metabolic N-oxidation of the diet-derived amino-trimethylamine (TMA) is mediated by flavin-containing monooxygenase and is subject to an inherited FMO3 polymorphism in man resulting in a small subpopulation with reduced TMA N-oxidation capacity resulting in fish odor syndrome Trimethylaminuria. Three forms of the enzyme, FMO1 found in fetal liver, FMO2 found in adult liver, and FMO3 are encoded by genes clustered in the 1q23-q25 region. Flavin-containing monooxygenases are NADPH-dependent flavoenzymes that catalyzes the oxidation of soft nucleophilic heteroatom centers in drugs, pesticides, and xenobiotics. Several transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Sep 2013]

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -14 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.87).
BP6
Variant 1-171283148-A-G is Benign according to our data. Variant chr1-171283148-A-G is described in Lovd as [Likely_benign].
BP7
Synonymous conserved (PhyloP=-2.87 with no splicing effect.
BA1
GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.525 is higher than 0.05.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
FMO1NM_001282693.2 linkuse as main transcriptc.1188A>G p.Val396Val synonymous_variant 8/9 ENST00000617670.6 NP_001269622.1 Q01740-1A0A024R934B2RCG5

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
FMO1ENST00000617670.6 linkuse as main transcriptc.1188A>G p.Val396Val synonymous_variant 8/91 NM_001282693.2 ENSP00000481732.1 Q01740-1

Frequencies

GnomAD3 genomes
AF:
0.241
AC:
36542
AN:
151566
Hom.:
6917
Cov.:
30
show subpopulations
Gnomad AFR
AF:
0.532
Gnomad AMI
AF:
0.0800
Gnomad AMR
AF:
0.124
Gnomad ASJ
AF:
0.140
Gnomad EAS
AF:
0.0324
Gnomad SAS
AF:
0.188
Gnomad FIN
AF:
0.124
Gnomad MID
AF:
0.133
Gnomad NFE
AF:
0.138
Gnomad OTH
AF:
0.207
GnomAD3 exomes
AF:
0.152
AC:
35794
AN:
235056
Hom.:
4280
AF XY:
0.150
AC XY:
19119
AN XY:
127464
show subpopulations
Gnomad AFR exome
AF:
0.541
Gnomad AMR exome
AF:
0.0792
Gnomad ASJ exome
AF:
0.128
Gnomad EAS exome
AF:
0.0294
Gnomad SAS exome
AF:
0.179
Gnomad FIN exome
AF:
0.127
Gnomad NFE exome
AF:
0.139
Gnomad OTH exome
AF:
0.137
GnomAD4 exome
AF:
0.139
AC:
192484
AN:
1387060
Hom.:
16835
Cov.:
24
AF XY:
0.140
AC XY:
96881
AN XY:
693472
show subpopulations
Gnomad4 AFR exome
AF:
0.536
Gnomad4 AMR exome
AF:
0.0865
Gnomad4 ASJ exome
AF:
0.127
Gnomad4 EAS exome
AF:
0.0224
Gnomad4 SAS exome
AF:
0.173
Gnomad4 FIN exome
AF:
0.124
Gnomad4 NFE exome
AF:
0.131
Gnomad4 OTH exome
AF:
0.152
GnomAD4 genome
AF:
0.241
AC:
36568
AN:
151682
Hom.:
6923
Cov.:
30
AF XY:
0.237
AC XY:
17548
AN XY:
74138
show subpopulations
Gnomad4 AFR
AF:
0.531
Gnomad4 AMR
AF:
0.124
Gnomad4 ASJ
AF:
0.140
Gnomad4 EAS
AF:
0.0327
Gnomad4 SAS
AF:
0.187
Gnomad4 FIN
AF:
0.124
Gnomad4 NFE
AF:
0.138
Gnomad4 OTH
AF:
0.204
Alfa
AF:
0.157
Hom.:
3009
Bravo
AF:
0.251
Asia WGS
AF:
0.130
AC:
454
AN:
3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.87
CADD
Benign
0.17
DANN
Benign
0.59

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: rs1126692; hg19: chr1-171252287; API