rs141553491

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 2P and 3B. PM2BP4_ModerateBP6

The NM_000098.3(CPT2):c.912G>T(p.Gln304His) variant causes a missense change. The variant allele was found at a frequency of 0.0000415 in 1,614,170 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 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 0.00021 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000024 ( 0 hom. )

Consequence

CPT2
NM_000098.3 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 4.41

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_benign. Variant got -1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.110948116).

BP6

Variant 1-53210586-G-T is Benign according to our data. Variant chr1-53210586-G-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 429622.We mark this variant Likely_benign, oryginal submissions are: {Uncertain_significance=2, Likely_benign=1}.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CPT2	NM_000098.3 linkuse as main transcript	c.912G>T	p.Gln304His	missense_variant	4/5	ENST00000371486.4
CPT2	NM_001330589.2 linkuse as main transcript	c.912G>T	p.Gln304His	missense_variant	4/5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CPT2	ENST00000371486.4 linkuse as main transcript	c.912G>T	p.Gln304His	missense_variant	4/5	1	NM_000098.3	P1
	ENST00000629810.1 linkuse as main transcript	n.286-177C>A		intron_variant, non_coding_transcript_variant		5

Frequencies

GnomAD3 genomes

AF:

0.000204

AC:

AN:

152166

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000676

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000208

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000796

AC:

AN:

251412

Hom.:

AF XY:

0.0000368

AC XY:

AN XY:

135882

show subpopulations

Gnomad AFR exome

AF:

0.000984

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000544

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000880

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000239

AC:

AN:

1461886

Hom.:

Cov.:

AF XY:

0.0000261

AC XY:

AN XY:

727244

show subpopulations

Gnomad4 AFR exome

AF:

0.000687

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000180

Gnomad4 OTH exome

AF:

0.000116

GnomAD4 genome

AF:

0.000210

AC:

AN:

152284

Hom.:

Cov.:

AF XY:

0.000201

AC XY:

AN XY:

74468

show subpopulations

Gnomad4 AFR

AF:

0.000674

Gnomad4 AMR

AF:

0.000131

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000208

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.000474

Alfa

AF:

0.0000541

Hom.:

Bravo

AF:

0.000212

ESP6500AA

AF:

0.00159

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000123

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:3Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Carnitine palmitoyltransferase II deficiency

Uncertain:1Benign:1

Uncertain significance, no assertion criteria provided	clinical testing	Natera, Inc.	Jan 17, 2020	- -
Likely benign, criteria provided, single submitter	clinical testing	Invitae	Jan 24, 2024	- -

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Dec 03, 2021

The c.912G>T (p.Q304H) alteration is located in exon 4 (coding exon 4) of the CPT2 gene. This alteration results from a G to T substitution at nucleotide position 912, causing the glutamine (Q) at amino acid position 304 to be replaced by a histidine (H). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

May 12, 2017

The Q304H variant has not been published as a pathogenic variant, nor has it been reported as abenign variant to our knowledge. The Q304H variant is observed in 13/10346 (0.13%) alleles fromindividuals of African background in large population cohorts (Lek et al., 2016; 1000 GenomesConsortium et al., 2015; Exome Variant Server). The Q304H variant is a semi-conservative aminoacid substitution, which may impact secondary protein structure as these residues differ in someproperties. This substitution occurs at a position that is not conserved. In silico analysis is inconsistentin its predictions as to whether or not the variant is damaging to the protein structure/function. Insummary, based on the currently available information, it is unclear whether this variant is apathogenic variant or a rare benign variant. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.16

BayesDel_addAF

Benign

-0.21

BayesDel_noAF

Benign

-0.15

Cadd

Benign

Dann

Uncertain

0.99

DEOGEN2

Uncertain

0.51

D;.;.;T;T

Eigen

Benign

0.14

Eigen_PC

Uncertain

0.27

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.90

D;D;D;D;D

M_CAP

Benign

0.064

MetaRNN

Benign

0.11

T;T;T;T;T

MetaSVM

Uncertain

0.26

MutationAssessor

Uncertain

2.4

M;.;.;.;.

MutationTaster

Benign

1.0

PrimateAI

Benign

0.31

PROVEAN

Benign

-2.2

N;.;.;.;.

REVEL

Uncertain

0.41

Sift

Benign

0.094

T;.;.;.;.

Sift4G

Benign

0.14

T;.;.;.;.

Polyphen

0.060

B;.;.;.;.

Vest4

0.38

MutPred

0.50

Loss of ubiquitination at K305 (P = 0.0768);Loss of ubiquitination at K305 (P = 0.0768);Loss of ubiquitination at K305 (P = 0.0768);Loss of ubiquitination at K305 (P = 0.0768);Loss of ubiquitination at K305 (P = 0.0768);

MVP

0.99

MPC

0.11

ClinPred

0.048

GERP RS

5.5

Varity_R

0.24

gMVP

0.36

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