NM_032601.4:c.178A>C

Variant names:

Variant summary

Our verdict is Benign. The variant received -13 ACMG points: 0P and 13B. BP4_StrongBP6BS1BS2

The NM_032601.4(MCEE):c.178A>C(p.Lys60Gln) variant causes a missense change. The variant allele was found at a frequency of 0.000821 in 1,614,158 control chromosomes in the GnomAD database, including 23 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. K60K) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00051 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00085 ( 23 hom. )

Consequence

MCEE
NM_032601.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:4O:1

Conservation

PhyloP100: 4.43

Publications

11 publications found

Variant links:

Genes affected

MCEE (HGNC:16732): (methylmalonyl-CoA epimerase) The product of this gene catalyzes the interconversion of D- and L-methylmalonyl-CoA during the degradation of branched chain amino acids. odd chain-length fatty acids, and other metabolites. Mutations in this gene result in methylmalonyl-CoA epimerase deficiency, which is presented as mild to moderate methylmalonic aciduria. [provided by RefSeq, Jul 2008]

MCEE Gene-Disease associations (from GenCC):

methylmalonic acidemia due to methylmalonyl-CoA epimerase deficiency
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: ClinGen, Labcorp Genetics (formerly Invitae), G2P

MCEE links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -13 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.009763122).

BP6

Variant 2-71124406-T-G is Benign according to our data. Variant chr2-71124406-T-G is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 203812.

BS1

Variant frequency is greater than expected in population sas. GnomAd4 allele frequency = 0.000506 (77/152272) while in subpopulation SAS AF = 0.0155 (75/4828). AF 95% confidence interval is 0.0127. There are 0 homozygotes in GnomAd4. There are 61 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.

BS2

High Homozygotes in GnomAdExome4 at 23 AR gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_032601.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MCEE	NM_032601.4	MANE Select	c.178A>C	p.Lys60Gln	missense	Exon 2 of 3	NP_115990.3

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
MCEE	ENST00000244217.6	TSL:1 MANE Select	c.178A>C	p.Lys60Gln	missense	Exon 2 of 3	ENSP00000244217.5	Q96PE7
MCEE	ENST00000413592.5	TSL:2	c.46A>C	p.Lys16Gln	missense	Exon 1 of 2	ENSP00000391140.1	H7BZS7
MCEE	ENST00000486135.1	TSL:3	c.-108A>C		5_prime_UTR	Exon 3 of 3	ENSP00000441569.1	F5GZ54

Frequencies

GnomAD3 genomes

AF:

0.000526

AC:

AN:

152154

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.0161

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.00182

AC:

458

AN:

251370

AF XY:

0.00247

show subpopulations

Gnomad AFR exome

AF:

0.000123

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000544

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000879

Gnomad OTH exome

AF:

0.000815

GnomAD4 exome

AF:

0.000854

AC:

1249

AN:

1461886

Hom.:

Cov.:

AF XY:

0.00123

AC XY:

895

AN XY:

727244

show subpopulations

African (AFR)

AF:

0.0000299

AC:

AN:

33480

American (AMR)

AF:

0.0000224

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39700

South Asian (SAS)

AF:

0.0136

AC:

1171

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53412

Middle Eastern (MID)

AF:

0.00191

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00000360

AC:

AN:

1112012

Other (OTH)

AF:

0.000993

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.479

Heterozygous variant carriers

173

259

346

432

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

100

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.000506

AC:

AN:

152272

Hom.:

Cov.:

AF XY:

0.000819

AC XY:

AN XY:

74452

show subpopulations

African (AFR)

AF:

0.0000481

AC:

AN:

41556

American (AMR)

AF:

0.00

AC:

AN:

15290

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5170

South Asian (SAS)

AF:

0.0155

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10618

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68022

Other (OTH)

AF:

0.00

AC:

AN:

2110

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.488

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000300

Hom.:

Bravo

AF:

0.0000793

ESP6500AA

AF:

0.000454

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.00213

AC:

259

Asia WGS

AF:

0.00433

AC:

AN:

3478

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

Methylmalonic acidemia due to methylmalonyl-CoA epimerase deficiency (3)

not provided (2)

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.12

BayesDel_addAF

Benign

-0.22

BayesDel_noAF

Uncertain

-0.070

CADD

Benign

(source)

DANN

Benign

0.91

DEOGEN2

Benign

0.37

Eigen

Benign

-0.32

Eigen_PC

Benign

-0.28

FATHMM_MKL

Uncertain

0.94

LIST_S2

Pathogenic

0.98

MetaRNN

Benign

0.0098

MetaSVM

Benign

-0.71

MutationAssessor

Benign

1.5

PhyloP100

4.4

PrimateAI

Benign

0.41

PROVEAN

Uncertain

-3.0

REVEL

Uncertain

0.30

Sift

Benign

0.29

Sift4G

Benign

0.38

Polyphen

0.031

Vest4

0.77

MVP

0.77

MPC

0.13

ClinPred

0.042

GERP RS

2.8

PromoterAI

0.019

Neutral

(source)

Varity_R

0.51

gMVP

0.62

Mutation Taster

=65/35

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over