rs778743524

Positions:

Variant summary

Our verdict is Likely pathogenic. Variant got 7 ACMG points: 7P and 0B. PM2PP3_StrongPP5

The NM_000098.3(CPT2):c.1459G>A(p.Glu487Lys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000684 in 1,461,492 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 12/21 in silico tools predict a damaging outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000068 ( 0 hom. )

Consequence

CPT2
NM_000098.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:3U:1

Conservation

PhyloP100: 10.0

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:

(HGNC:):

links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 7 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.988

PP5

Variant 1-53211133-G-A is Pathogenic according to our data. Variant chr1-53211133-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 555252.We mark this variant Likely_pathogenic, oryginal submissions are: {Likely_pathogenic=2, Uncertain_significance=1, Pathogenic=1}.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CPT2	NM_000098.3 linkuse as main transcript	c.1459G>A	p.Glu487Lys	missense_variant	4/5	ENST00000371486.4	NP_000089.1
CPT2	NM_001330589.2 linkuse as main transcript	c.1459G>A	p.Glu487Lys	missense_variant	4/5		NP_001317518.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CPT2	ENST00000371486.4 linkuse as main transcript	c.1459G>A	p.Glu487Lys	missense_variant	4/5	1	NM_000098.3	ENSP00000360541	P1
	ENST00000629810.1 linkuse as main transcript	n.286-724C>T		intron_variant, non_coding_transcript_variant		5

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000120

AC:

AN:

250630

Hom.:

AF XY:

0.00000738

AC XY:

AN XY:

135526

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000177

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000684

AC:

AN:

1461492

Hom.:

Cov.:

AF XY:

0.00000688

AC XY:

AN XY:

727008

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000630

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Bravo

AF:

0.00000756

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:3Uncertain:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Carnitine palmitoyl transferase II deficiency, myopathic form

Pathogenic:1

Likely pathogenic, criteria provided, single submitter

clinical testing

Institute of Human Genetics, University of Leipzig Medical Center

Jun 19, 2017

- -

Encephalopathy, acute, infection-induced, susceptibility to, 4

Pathogenic:1

Likely pathogenic, criteria provided, single submitter

clinical testing

Baylor Genetics

Nov 23, 2023

- -

Carnitine palmitoyltransferase II deficiency

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Dec 12, 2023

This sequence change replaces glutamic acid, which is acidic and polar, with lysine, which is basic and polar, at codon 487 of the CPT2 protein (p.Glu487Lys). This variant is present in population databases (rs778743524, gnomAD 0.003%). This missense change has been observed in individual(s) with CPT2 deficiency (PMID: 10868782). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. ClinVar contains an entry for this variant (Variation ID: 555252). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt CPT2 protein function with a positive predictive value of 80%. This variant disrupts the p.Glu487 amino acid residue in CPT2. Other variant(s) that disrupt this residue have been determined to be pathogenic (PMID: 10868782). This suggests that this residue is clinically significant, and that variants that disrupt this residue are likely to be disease-causing. For these reasons, this variant has been classified as Pathogenic. -

Carnitine palmitoyl transferase II deficiency, severe infantile form

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Counsyl

Nov 26, 2017

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.99

BayesDel_addAF

Pathogenic

0.51

BayesDel_noAF

Pathogenic

0.60

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Pathogenic

0.83

D;.;.;T;T

Eigen

Pathogenic

0.99

Eigen_PC

Pathogenic

0.86

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Pathogenic

0.99

D;D;D;D;D

M_CAP

Pathogenic

0.36

MetaRNN

Pathogenic

0.99

D;D;D;D;D

MetaSVM

Pathogenic

1.1

MutationAssessor

Pathogenic

4.4

H;.;.;.;.

MutationTaster

Benign

1.0

PrimateAI

Pathogenic

0.84

PROVEAN

Uncertain

-3.8

D;.;.;.;.

REVEL

Pathogenic

0.96

Sift

Pathogenic

0.0

D;.;.;.;.

Sift4G

Uncertain

0.0040

D;.;.;.;.

Polyphen

1.0

D;.;.;.;.

Vest4

0.97

MutPred

0.97

Gain of MoRF binding (P = 0.0116);Gain of MoRF binding (P = 0.0116);Gain of MoRF binding (P = 0.0116);Gain of MoRF binding (P = 0.0116);Gain of MoRF binding (P = 0.0116);

MVP

1.0

MPC

0.59

ClinPred

1.0

GERP RS

5.6

Varity_R

0.97

gMVP

0.95

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