chr6-20109680-A-T
Variant summary
Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2PP3_Strong
The NM_001080480.3(MBOAT1):c.1279T>A(p.Trp427Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000062 in 1,614,066 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 (★).
Frequency
Genomes: 𝑓 0.000020 ( 0 hom., cov: 32)
Exomes 𝑓: 0.0000048 ( 0 hom. )
Consequence
MBOAT1
NM_001080480.3 missense
NM_001080480.3 missense
Scores
9
5
5
Clinical Significance
Conservation
PhyloP100: 9.32
Genes affected
MBOAT1 (HGNC:21579): (membrane bound O-acyltransferase domain containing 1) This gene belongs to the membrane-bound O-acetyltransferase superfamily. The encoded transmembrane protein is an enzyme that transfers organic compounds, preferably from oleoyl-CoA, to hydroxyl groups of protein targets in membranes. A translocation disrupting this gene may be associated with brachydactyly syndactyly syndrome. Alternately spliced transcript variants have been described for this gene. [provided by RefSeq, Nov 2012]
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ACMG classification
Classification made for transcript
Verdict is Likely_pathogenic. Variant got 6 ACMG points.
PM2
?
Very rare variant in population databases, with high coverage;
PP3
?
MetaRNN computational evidence supports a deleterious effect, 0.943
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
MBOAT1 | NM_001080480.3 | c.1279T>A | p.Trp427Arg | missense_variant | 12/13 | ENST00000324607.8 | |
MBOAT1 | XM_006714999.3 | c.1183T>A | p.Trp395Arg | missense_variant | 12/13 | ||
MBOAT1 | NR_073465.2 | n.1234T>A | non_coding_transcript_exon_variant | 9/10 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
MBOAT1 | ENST00000324607.8 | c.1279T>A | p.Trp427Arg | missense_variant | 12/13 | 1 | NM_001080480.3 | P1 |
Frequencies
GnomAD3 genomes ? AF: 0.0000197 AC: 3AN: 152192Hom.: 0 Cov.: 32
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GnomAD3 exomes AF: 0.00000795 AC: 2AN: 251438Hom.: 0 AF XY: 0.00000736 AC XY: 1AN XY: 135886
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GnomAD4 exome AF: 0.00000479 AC: 7AN: 1461874Hom.: 0 Cov.: 31 AF XY: 0.00000275 AC XY: 2AN XY: 727244
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GnomAD4 genome ? AF: 0.0000197 AC: 3AN: 152192Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0AN XY: 74354
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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 submitter | clinical testing | Ambry Genetics | Apr 05, 2023 | The c.1279T>A (p.W427R) alteration is located in exon 12 (coding exon 12) of the MBOAT1 gene. This alteration results from a T to A substitution at nucleotide position 1279, causing the tryptophan (W) at amino acid position 427 to be replaced by an arginine (R). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
BayesDel_addAF
Uncertain
D
BayesDel_noAF
Pathogenic
Cadd
Pathogenic
Dann
Uncertain
DEOGEN2
Benign
T
Eigen
Pathogenic
Eigen_PC
Pathogenic
FATHMM_MKL
Pathogenic
D
LIST_S2
Uncertain
D
M_CAP
Benign
D
MetaRNN
Pathogenic
D
MetaSVM
Benign
T
MutationAssessor
Pathogenic
M
MutationTaster
Benign
D;D
PrimateAI
Uncertain
T
PROVEAN
Pathogenic
D
REVEL
Uncertain
Sift
Pathogenic
D
Sift4G
Benign
T
Polyphen
D
Vest4
MutPred
Gain of methylation at W427 (P = 0.0075);
MVP
MPC
ClinPred
D
GERP RS
RBP_binding_hub_radar
RBP_regulation_power_radar
Varity_R
gMVP
Splicing
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SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at