Variant NM_012213.3:c.22_34dupTTGACGGCCAGGC details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely pathogenic. Variant got 8 ACMG points: 8P and 0B. PVS1_StrongPM2PP5_Moderate

The NM_012213.3(MLYCD):c.22_34dupTTGACGGCCAGGC(p.Arg12LeufsTer200) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000087 in 1,148,992 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Pathogenic (★).

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000050 ( 0 hom. )

Consequence

MLYCD
NM_012213.3 frameshift

Scores

Not classified

Clinical Significance

Pathogenic criteria provided, single submitter P:1

Conservation

PhyloP100: 1.87

Variant links:

Genes affected

MLYCD (HGNC:7150): (malonyl-CoA decarboxylase) The product of this gene catalyzes the breakdown of malonyl-CoA to acetyl-CoA and carbon dioxide. Malonyl-CoA is an intermediate in fatty acid biosynthesis, and also inhibits the transport of fatty acyl CoAs into mitochondria. Consequently, the encoded protein acts to increase the rate of fatty acid oxidation. It is found in mitochondria, peroxisomes, and the cytoplasm. Mutations in this gene result in malonyl-CoA decarboyxlase deficiency. [provided by RefSeq, Jul 2008]

MLYCD links:

ENSG00000288849 (HGNC:):

ENSG00000288849 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 8 ACMG points.

PVS1

Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant located near the start codon (<100nt), not predicted to undergo nonsense mediated mRNA decay. There are 9 pathogenic variants in the truncated region.

PM2

Very rare variant in population databases, with high coverage;

PP5

Variant 16-83899157-G-GGGCCAGGCTTGAC is Pathogenic according to our data. Variant chr16-83899157-G-GGGCCAGGCTTGAC is described in ClinVar as [Pathogenic]. Clinvar id is 1400055.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MLYCD	NM_012213.3 link	c.22_34dupTTGACGGCCAGGC	p.Arg12LeufsTer200	frameshift_variant	Exon 1 of 5	ENST00000262430.6	NP_036345.2	O95822-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
MLYCD	ENST00000262430.6 link	c.22_34dupTTGACGGCCAGGC	p.Arg12LeufsTer200	frameshift_variant	Exon 1 of 5	1	NM_012213.3	ENSP00000262430.4	O95822-1
ENSG00000288849	ENST00000689373.1 link	n.1202-7821_1202-7809dupTTGACGGCCAGGC		intron_variant	Intron 5 of 8
ENSG00000288849	ENST00000692462.1 link	n.1170-7821_1170-7809dupTTGACGGCCAGGC		intron_variant	Intron 5 of 8

Frequencies

GnomAD3 genomes

AF:

0.0000334

AC:

AN:

149660

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000121

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000500

AC:

AN:

999224

Hom.:

Cov.:

AF XY:

0.0000105

AC XY:

AN XY:

477508

show subpopulations

Gnomad4 AFR exome

AF:

0.000205

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000682

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000334

AC:

AN:

149768

Hom.:

Cov.:

AF XY:

0.0000547

AC XY:

AN XY:

73116

show subpopulations

Gnomad4 AFR

AF:

0.000121

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:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000113

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Deficiency of malonyl-CoA decarboxylase

Pathogenic:1

Nov 05, 2023

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change creates a premature translational stop signal (p.Arg12Leufs*200) in the MLYCD gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in MLYCD are known to be pathogenic (PMID: 12955715, 17186413). This variant is present in population databases (no rsID available, gnomAD 0.01%). This premature translational stop signal has been observed in individual(s) with Malonyl-CoA decarboxylase deficiency (PMID: 31395333). This variant is also known as c.23_24ins13. ClinVar contains an entry for this variant (Variation ID: 1400055). For these reasons, this variant has been classified as Pathogenic. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

Splicing

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