NM_024537.4:c.1331C>T

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_024537.4(CARS2):c.1331C>T(p.Pro444Leu) variant causes a missense change. The variant allele was found at a frequency of 0.000764 in 1,614,002 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Synonymous variant affecting the same amino acid position (i.e. P444P) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00033 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00081 ( 0 hom. )

Consequence

CARS2
NM_024537.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:4

Conservation

PhyloP100: 6.45

Publications

6 publications found

Variant links:

Genes affected

CARS2 (HGNC:25695): (cysteinyl-tRNA synthetase 2, mitochondrial) This gene encodes a putative member of the class I family of aminoacyl-tRNA synthetases. These enzymes play a critical role in protein biosynthesis by charging tRNAs with their cognate amino acids. This protein is encoded by the nuclear genome but is likely to be imported to the mitochondrion where it is thought to catalyze the ligation of cysteine to tRNA molecules. A splice-site mutation in this gene has been associated with a novel progressive myoclonic epilepsy disease with similar symptoms to MERRF syndrome. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jun 2017]

CARS2 Gene-Disease associations (from GenCC):

combined oxidative phosphorylation defect type 27
Inheritance: AR Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, G2P, Laboratory for Molecular Medicine
mitochondrial disease
Inheritance: AR Classification: MODERATE Submitted by: ClinGen

CARS2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.16887158).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_024537.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
CARS2	NM_024537.4	MANE Select	c.1331C>T	p.Pro444Leu	missense	Exon 13 of 15	NP_078813.1	Q9HA77
CARS2	NM_001352252.2		c.545C>T	p.Pro182Leu	missense	Exon 14 of 16	NP_001339181.1
CARS2	NR_147941.1		n.1302C>T		non_coding_transcript_exon	Exon 14 of 17

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
CARS2	ENST00000257347.9	TSL:1 MANE Select	c.1331C>T	p.Pro444Leu	missense	Exon 13 of 15	ENSP00000257347.4	Q9HA77
CARS2	ENST00000939450.1		c.1207C>T	p.Arg403*	stop_gained	Exon 12 of 15	ENSP00000609509.1
CARS2	ENST00000939453.1		c.1475C>T	p.Pro492Leu	missense	Exon 13 of 15	ENSP00000609512.1

Frequencies

GnomAD3 genomes

AF:

0.000329

AC:

AN:

152144

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000724

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:

0.000691

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000374

AC:

AN:

251396

AF XY:

0.000368

show subpopulations

Gnomad AFR exome

AF:

0.000185

Gnomad AMR exome

AF:

0.0000578

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.000139

Gnomad NFE exome

AF:

0.000739

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.000809

AC:

1183

AN:

1461742

Hom.:

Cov.:

AF XY:

0.000781

AC XY:

568

AN XY:

727156

show subpopulations

African (AFR)

AF:

0.000119

AC:

AN:

33478

American (AMR)

AF:

0.0000894

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39696

South Asian (SAS)

AF:

0.0000232

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.000281

AC:

AN:

53316

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00100

AC:

1117

AN:

1111982

Other (OTH)

AF:

0.000679

AC:

AN:

60384

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.454

Heterozygous variant carriers

118

178

237

296

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

132

176

220

<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:

0.000328

AC:

AN:

152260

Hom.:

Cov.:

AF XY:

0.000215

AC XY:

AN XY:

74432

show subpopulations

African (AFR)

AF:

0.0000722

AC:

AN:

41550

American (AMR)

AF:

0.00

AC:

AN:

15300

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5182

South Asian (SAS)

AF:

0.00

AC:

AN:

4816

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10600

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000691

AC:

AN:

68024

Other (OTH)

AF:

0.00

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.504

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:

0.000613

Hom.:

Bravo

AF:

0.000321

TwinsUK

AF:

0.000539

AC:

ALSPAC

AF:

0.000778

AC:

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.000581

AC:

ExAC

AF:

0.000371

AC:

EpiCase

AF:

0.000763

EpiControl

AF:

0.000652

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

Combined oxidative phosphorylation defect type 27 (2)

Inborn genetic diseases (1)

not provided (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.090

BayesDel_addAF

Benign

-0.30

BayesDel_noAF

Benign

-0.29

CADD

Uncertain

(source)

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.50

Eigen

Benign

0.099

Eigen_PC

Benign

0.053

FATHMM_MKL

Uncertain

0.94

LIST_S2

Uncertain

0.91

M_CAP

Benign

0.029

MetaRNN

Benign

0.17

MetaSVM

Benign

-0.92

MutationAssessor

Uncertain

2.5

PhyloP100

6.4

PrimateAI

Benign

0.40

PROVEAN

Pathogenic

-5.3

REVEL

Benign

0.24

Sift

Uncertain

0.0050

Sift4G

Benign

0.50

Polyphen

0.74

Vest4

0.43

MVP

0.51

MPC

0.30

ClinPred

0.37

GERP RS

5.0

Varity_R

0.25

gMVP

0.33

Mutation Taster

=76/24

polymorphism

(source)

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

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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