Variant 22-43133441-G-A details in Genebe, Genetics Data Aggregator

Variant summary

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

The NM_173467.5(MCAT):c.775C>T(p.Arg259Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000787 in 1,613,730 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000085 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000078 ( 1 hom. )

Consequence

MCAT
NM_173467.5 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 3.11

Variant links:

Genes affected

MCAT (HGNC:29622): (malonyl-CoA-acyl carrier protein transacylase) The protein encoded by this gene is found exclusively in the mitochondrion, where it catalyzes the transfer of a malonyl group from malonyl-CoA to the mitochondrial acyl carrier protein. The encoded protein may be part of a fatty acid synthase complex that is more like the type II prokaryotic and plastid complexes rather than the type I human cytosolic complex. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Mar 2012]

MCAT links:

Genome browser will be placed here

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, 0.848

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
MCAT	NM_173467.5 linkuse as main transcript	c.775C>T	p.Arg259Cys	missense_variant	4/4	ENST00000290429.11	NP_775738.3
MCAT	NM_014507.3 linkuse as main transcript	c.*14C>T		3_prime_UTR_variant	3/3		NP_055322.1
MCAT	NR_046423.1 linkuse as main transcript	n.640C>T		non_coding_transcript_exon_variant	3/3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MCAT	ENST00000290429.11 linkuse as main transcript	c.775C>T	p.Arg259Cys	missense_variant	4/4	1	NM_173467.5	ENSP00000290429	P1	Q8IVS2-1
MCAT	ENST00000327555.5 linkuse as main transcript	c.*14C>T		3_prime_UTR_variant	3/3	1		ENSP00000331306		Q8IVS2-2

Frequencies

GnomAD3 genomes

AF:

0.0000526

AC:

AN:

152168

Hom.:

Cov.:

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:

0.000193

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000735

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.0000883

AC:

AN:

249090

Hom.:

AF XY:

0.000104

AC XY:

AN XY:

134856

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000546

Gnomad SAS exome

AF:

0.000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000982

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000780

AC:

114

AN:

1461446

Hom.:

Cov.:

AF XY:

0.0000867

AC XY:

AN XY:

727020

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.000418

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000594

Gnomad4 OTH exome

AF:

0.0000828

GnomAD4 genome

AF:

0.0000854

AC:

AN:

152284

Hom.:

Cov.:

AF XY:

0.0000671

AC XY:

AN XY:

74472

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000735

Gnomad4 OTH

AF:

0.00284

Alfa

AF:

0.000113

Hom.:

Bravo

AF:

0.0000453

ExAC

AF:

0.0000988

AC:

Asia WGS

AF:

0.00115

AC:

AN:

3478

EpiCase

AF:

0.000273

EpiControl

AF:

0.000357

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Mar 07, 2024

The c.775C>T (p.R259C) alteration is located in exon 4 (coding exon 4) of the MCAT gene. This alteration results from a C to T substitution at nucleotide position 775, causing the arginine (R) at amino acid position 259 to be replaced by a cysteine (C). 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

Jun 01, 2023

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.26

BayesDel_addAF

Uncertain

0.043

BayesDel_noAF

Uncertain

0.13

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.57

Eigen

Pathogenic

0.74

Eigen_PC

Uncertain

0.60

FATHMM_MKL

Uncertain

0.92

LIST_S2

Uncertain

0.92

M_CAP

Benign

0.050

MetaRNN

Pathogenic

0.85

MetaSVM

Uncertain

0.094

MutationAssessor

Pathogenic

3.1

MutationTaster

Benign

1.0

D;D

PrimateAI

Uncertain

0.55

PROVEAN

Pathogenic

-6.0

REVEL

Uncertain

0.52

Sift

Uncertain

0.0020

Sift4G

Pathogenic

0.0010

Polyphen

1.0

Vest4

0.80

MutPred

0.71

Loss of MoRF binding (P = 0.0234);

MVP

0.80

MPC

1.2

ClinPred

0.90

GERP RS

4.1

Varity_R

0.80

gMVP

0.79

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.31

Details are displayed if max score is > 0.2

DS_AG_spliceai

0.31

Position offset: 1

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