chr1-53210251-C-T

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 1P and 5B. PP3BP4_StrongBP6

The NM_000098.3(CPT2):c.577C>T(p.Arg193Cys) variant causes a missense change. The variant allele was found at a frequency of 0.000158 in 1,614,170 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R193H) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00027 ( 1 hom., cov: 32)

Exomes 𝑓: 0.00015 ( 1 hom. )

Consequence

CPT2
NM_000098.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:3U:2B:4

Conservation

PhyloP100: 3.66

Publications

3 publications found

Variant links:

Genes affected

CPT2 (HGNC:2330): (carnitine palmitoyltransferase 2) The protein encoded by this gene is a nuclear protein which is transported to the mitochondrial inner membrane. Together with carnitine palmitoyltransferase I, the encoded protein oxidizes long-chain fatty acids in the mitochondria. Defects in this gene are associated with mitochondrial long-chain fatty-acid (LCFA) oxidation disorders. [provided by RefSeq, Jul 2008]

CPT2 Gene-Disease associations (from GenCC):

carnitine palmitoyltransferase II deficiency
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen, Myriad Women’s Health
carnitine palmitoyl transferase II deficiency, myopathic form
Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, PanelApp Australia
carnitine palmitoyl transferase II deficiency, neonatal form
Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), PanelApp Australia
carnitine palmitoyl transferase II deficiency, severe infantile form
Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: PanelApp Australia, Orphanet
encephalopathy, acute, infection-induced, susceptibility to, 4
Inheritance: Unknown Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)

CPT2 links:

ENSG00000236723 (HGNC:):

ENSG00000236723 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -4 ACMG points.

PP3

Multiple lines of computational evidence support a deleterious effect 9: BayesDel_noAF, Cadd, Dann, Eigen, M_CAP, MutationAssessor, PROVEAN, REVEL, REVEL [when AlphaMissense, BayesDel_addAF, max_spliceai, FATHMM_MKL, MetaRNN, MutationTaster, phyloP100way_vertebrate was below the threshold]

BP4

Computational evidence support a benign effect (MetaRNN=0.048920453).

BP6

Variant 1-53210251-C-T is Benign according to our data. Variant chr1-53210251-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 287483.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000098.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CPT2	NM_000098.3	MANE Select	c.577C>T	p.Arg193Cys	missense	Exon 4 of 5	NP_000089.1
	CPT2	NM_001330589.2		c.577C>T	p.Arg193Cys	missense	Exon 4 of 5	NP_001317518.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
CPT2	ENST00000371486.4	TSL:1 MANE Select	c.577C>T	p.Arg193Cys	missense	Exon 4 of 5	ENSP00000360541.3
CPT2	ENST00000637252.1	TSL:5	c.577C>T	p.Arg193Cys	missense	Exon 4 of 6	ENSP00000490492.1
CPT2	ENST00000635862.1	TSL:5	c.577C>T	p.Arg193Cys	missense	Exon 4 of 6	ENSP00000490867.1

Frequencies

GnomAD3 genomes

AF:

0.000269

AC:

AN:

152168

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000290

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00327

Gnomad SAS

AF:

0.00186

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000366

AC:

AN:

251426

AF XY:

0.000419

show subpopulations

Gnomad AFR exome

AF:

0.000554

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00201

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000352

Gnomad OTH exome

AF:

0.000489

GnomAD4 exome

AF:

0.000146

AC:

214

AN:

1461884

Hom.:

Cov.:

AF XY:

0.000176

AC XY:

128

AN XY:

727240

show subpopulations

African (AFR)

AF:

0.000508

AC:

AN:

33480

American (AMR)

AF:

0.0000224

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.000655

AC:

AN:

39700

South Asian (SAS)

AF:

0.00133

AC:

115

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53414

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000153

AC:

AN:

1112008

Other (OTH)

AF:

0.000629

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.486

Heterozygous variant carriers

101

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome 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

GnomAD4 genome

AF:

0.000269

AC:

AN:

152286

Hom.:

Cov.:

AF XY:

0.000376

AC XY:

AN XY:

74466

show subpopulations

African (AFR)

AF:

0.000289

AC:

AN:

41560

American (AMR)

AF:

0.000131

AC:

AN:

15288

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00328

AC:

AN:

5180

South Asian (SAS)

AF:

0.00187

AC:

AN:

4824

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10614

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68026

Other (OTH)

AF:

0.00

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.457

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:

0.0000651

Hom.:

Bravo

AF:

0.000208

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.000502

AC:

Asia WGS

AF:

0.0100

AC:

AN:

3476

EpiCase

AF:

0.0000545

EpiControl

AF:

0.000119

ClinVar

ClinVar submissions as Germline

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (5)

Carnitine palmitoyltransferase II deficiency (2)

not specified (2)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.21

BayesDel_addAF

Benign

-0.0060

BayesDel_noAF

Pathogenic

0.21

CADD

Pathogenic

(source)

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.68

Eigen

Pathogenic

0.82

Eigen_PC

Pathogenic

0.76

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Pathogenic

0.97

M_CAP

Pathogenic

0.29

MetaRNN

Benign

0.049

MetaSVM

Pathogenic

0.84

MutationAssessor

Pathogenic

3.1

PhyloP100

3.7

PrimateAI

Uncertain

0.63

PROVEAN

Pathogenic

-6.3

REVEL

Pathogenic

0.75

Sift

Uncertain

0.0040

Sift4G

Uncertain

0.0020

Polyphen

1.0

Vest4

0.94

MVP

0.99

MPC

0.64

ClinPred

0.13

GERP RS

5.5

Varity_R

0.41

gMVP

0.72

Mutation Taster

=60/40

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

ClinVar submissions as Germline

Computational scores

Splicing

Publications

Other links and lift over