1-53211272-T-C

Position:

chr1-53211272-T-C

Variant summary

Our verdict is Benign. Variant got -9 ACMG points: 0P and 9B. BP4_StrongBP6BS2

The NM_000098.3(CPT2):c.1598T>C(p.Val533Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000403 in 1,611,954 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.0021 ( 2 hom., cov: 32)

Exomes 𝑓: 0.00022 ( 0 hom. )

Consequence

CPT2
NM_000098.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:5

Conservation

PhyloP100: 0.188

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 links:

CPT2 (HGNC:):

CPT2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -9 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.009387672).

BP6

Variant 1-53211272-T-C is Benign according to our data. Variant chr1-53211272-T-C is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 203657.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=2, Uncertain_significance=1, Benign=2}.

BS2

High Homozygotes in GnomAd4 at 2 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CPT2	NM_000098.3 linkuse as main transcript	c.1598T>C	p.Val533Ala	missense_variant	4/5	ENST00000371486.4	NP_000089.1	P23786A0A140VK13
CPT2	NM_001330589.2 linkuse as main transcript	c.1576+22T>C		intron_variant			NP_001317518.1	A0A1B0GTB8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CPT2	ENST00000371486.4 linkuse as main transcript	c.1598T>C	p.Val533Ala	missense_variant	4/5	1	NM_000098.3	ENSP00000360541.3		P23786

Frequencies

GnomAD3 genomes

AF:

0.00215

AC:

327

AN:

152152

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00734

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00105

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:

0.0000147

Gnomad OTH

AF:

0.00287

GnomAD3 exomes

AF:

0.000477

AC:

117

AN:

245266

Hom.:

AF XY:

0.000324

AC XY:

AN XY:

132778

show subpopulations

Gnomad AFR exome

AF:

0.00665

Gnomad AMR exome

AF:

0.000322

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000333

GnomAD4 exome

AF:

0.000221

AC:

323

AN:

1459684

Hom.:

Cov.:

AF XY:

0.000179

AC XY:

130

AN XY:

725938

show subpopulations

Gnomad4 AFR exome

AF:

0.00796

Gnomad4 AMR exome

AF:

0.000405

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000171

Gnomad4 OTH exome

AF:

0.000298

GnomAD4 genome

AF:

0.00215

AC:

327

AN:

152270

Hom.:

Cov.:

AF XY:

0.00216

AC XY:

161

AN XY:

74456

show subpopulations

Gnomad4 AFR

AF:

0.00732

Gnomad4 AMR

AF:

0.00105

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00284

Alfa

AF:

0.000298

Hom.:

Bravo

AF:

0.00252

ESP6500AA

AF:

0.00817

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000577

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:5

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not specified

Uncertain:1Benign:1

Benign, criteria provided, single submitter	clinical testing	GeneDx	Sep 11, 2014	This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -
Uncertain significance, criteria provided, single submitter	clinical testing	Women's Health and Genetics/Laboratory Corporation of America, LabCorp	Mar 03, 2022	Variant summary: CPT2 c.1598T>C (p.Val533Ala) results in a non-conservative amino acid change located in the Choline/carnitine acyltransferase domain (IPR039551) of the encoded protein sequence. Four of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 0.00048 in 245266 control chromosomes (gnomAD). This frequency is not higher than expected for a pathogenic variant in CPT2 causing Carnitine Palmitoyltransferase II Deficiency (0.00048 vs 0.0016), allowing no conclusion about variant significance. To our knowledge, no occurrence of c.1598T>C in individuals affected with Carnitine Palmitoyltransferase II Deficiency and no experimental evidence demonstrating its impact on protein function have been reported. Two clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 and classified the variant as benign (n=1) and likely benign (n=1). Based on the evidence outlined above, the variant was classified as uncertain significance. -

not provided

Benign:2

Likely benign, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Sep 21, 2023	- -
Benign, criteria provided, single submitter	clinical testing	Athena Diagnostics	Jun 26, 2019	- -

CPT2-related disorder

Benign:1

Benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

May 03, 2019

This variant is classified as benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Carnitine palmitoyltransferase II deficiency

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 31, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.049

BayesDel_addAF

Benign

-0.44

BayesDel_noAF

Benign

-0.40

CADD

Benign

1.1

DANN

Benign

0.55

DEOGEN2

Benign

0.28

T;.;T

Eigen

Benign

-1.7

Eigen_PC

Benign

-1.6

FATHMM_MKL

Benign

0.060

LIST_S2

Benign

0.13

T;T;T

M_CAP

Benign

0.030

MetaRNN

Benign

0.0094

T;T;T

MetaSVM

Benign

-0.80

MutationAssessor

Benign

0.14

N;.;.

PrimateAI

Benign

0.30

PROVEAN

Benign

0.65

N;.;.

REVEL

Benign

0.17

Sift

Benign

0.78

T;.;.

Sift4G

Benign

0.84

T;.;.

Polyphen

0.0

B;.;.

Vest4

0.081

MVP

0.92

MPC

0.14

ClinPred

0.0015

GERP RS

-0.20

Varity_R

0.036

gMVP

0.20

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

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