chr19-54174102-C-T

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2BP4_StrongBS1_Supporting

The NM_024298.5(MBOAT7):c.1361G>A(p.Arg454Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000454 in 1,606,896 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000046 ( 1 hom. )

Consequence

MBOAT7
NM_024298.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 0.754

Variant links:

Genes affected

MBOAT7 (HGNC:15505): (membrane bound O-acyltransferase domain containing 7) This gene encodes a member of the membrane-bound O-acyltransferases family of integral membrane proteins that have acyltransferase activity. The encoded protein is a lysophosphatidylinositol acyltransferase that has specificity for arachidonoyl-CoA as an acyl donor. This protein is involved in the reacylation of phospholipids as part of the phospholipid remodeling pathway known as the Land cycle. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Mar 2009]

MBOAT7 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.0384565).

BS1

Variant frequency is greater than expected in population sas. gnomad4_exome allele frequency = 0.0000461 (67/1454742) while in subpopulation SAS AF= 0.000292 (25/85742). AF 95% confidence interval is 0.000203. There are 1 homozygotes in gnomad4_exome. There are 43 alleles in male gnomad4_exome subpopulation. Median coverage is 31. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MBOAT7	NM_024298.5 link	c.1361G>A	p.Arg454Gln	missense_variant	Exon 8 of 8	ENST00000245615.6	NP_077274.3	Q96N66-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MBOAT7	ENST00000245615.6 link	c.1361G>A	p.Arg454Gln	missense_variant	Exon 8 of 8	1	NM_024298.5	ENSP00000245615.1		Q96N66-1

Frequencies

GnomAD3 genomes

AF:

0.0000395

AC:

AN:

152034

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000242

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000414

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.0000911

AC:

AN:

241534

Hom.:

AF XY:

0.000122

AC XY:

AN XY:

131438

show subpopulations

Gnomad AFR exome

AF:

0.0000645

Gnomad AMR exome

AF:

0.0000899

Gnomad ASJ exome

AF:

0.000211

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000299

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000646

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000461

AC:

AN:

1454742

Hom.:

Cov.:

AF XY:

0.0000594

AC XY:

AN XY:

723714

show subpopulations

Gnomad4 AFR exome

AF:

0.0000303

Gnomad4 AMR exome

AF:

0.0000686

Gnomad4 ASJ exome

AF:

0.0000777

Gnomad4 EAS exome

AF:

0.0000254

Gnomad4 SAS exome

AF:

0.000292

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000243

Gnomad4 OTH exome

AF:

0.000133

GnomAD4 genome

AF:

0.0000394

AC:

AN:

152154

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74406

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:

0.000414

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.000473

Alfa

AF:

0.0000453

Hom.:

Bravo

AF:

0.0000113

ExAC

AF:

0.0000412

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Sep 03, 2024

The c.1361G>A (p.R454Q) alteration is located in exon 8 (coding exon 7) of the MBOAT7 gene. This alteration results from a G to A substitution at nucleotide position 1361, causing the arginine (R) at amino acid position 454 to be replaced by a glutamine (Q). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

CeGaT Center for Human Genetics Tuebingen

Jul 01, 2023

MBOAT7: PM2, BP4 -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.082

BayesDel_addAF

Benign

-0.50

BayesDel_noAF

Benign

-0.66

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.025

.;.;T

Eigen

Benign

-0.49

Eigen_PC

Benign

-0.38

FATHMM_MKL

Benign

0.30

M_CAP

Benign

0.015

MetaRNN

Benign

0.038

T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.34

.;.;N

PrimateAI

Benign

0.34

PROVEAN

Benign

-0.99

N;N;N

REVEL

Benign

0.0050

Sift

Benign

0.047

D;D;T

Sift4G

Benign

0.10

T;T;T

Polyphen

0.011

B;B;B

Vest4

0.12

MutPred

0.32

.;.;Gain of ubiquitination at K456 (P = 0.039);

MVP

0.28

MPC

0.20

ClinPred

0.027

GERP RS

2.6

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.040

gMVP

0.18

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over