rs74315297

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 3P and 1B. PM2PP3BP6

The NM_000098.3(CPT2):​c.1342T>C​(p.Phe448Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000118 in 1,614,056 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity,other (no stars).

Frequency

Genomes: 𝑓 0.00011 ( 0 hom., cov: 32)
Exomes 𝑓: 0.00012 ( 0 hom. )

Consequence

CPT2
NM_000098.3 missense

Scores

11
6
1

Clinical Significance

Conflicting classifications of pathogenicity; other criteria provided, conflicting classifications U:3B:1O:2

Conservation

PhyloP100: 7.67

Publications

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

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PP3
MetaRNN computational evidence supports a deleterious effect, 0.759
BP6
Variant 1-53211016-T-C is Benign according to our data. Variant chr1-53211016-T-C is described in ClinVar as Conflicting_classifications_of_pathogenicity|other. ClinVar VariationId is 8960.

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

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
CPT2
NM_000098.3
MANE Select
c.1342T>Cp.Phe448Leu
missense
Exon 4 of 5NP_000089.1P23786
CPT2
NM_001330589.2
c.1342T>Cp.Phe448Leu
missense
Exon 4 of 5NP_001317518.1A0A1B0GTB8

Ensembl Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
CPT2
ENST00000371486.4
TSL:1 MANE Select
c.1342T>Cp.Phe448Leu
missense
Exon 4 of 5ENSP00000360541.3P23786
CPT2
ENST00000873097.1
c.1342T>Cp.Phe448Leu
missense
Exon 4 of 6ENSP00000543156.1
CPT2
ENST00000637252.1
TSL:5
c.1342T>Cp.Phe448Leu
missense
Exon 4 of 6ENSP00000490492.1A0A1B0GVF3

Frequencies

GnomAD3 genomes
AF:
0.000105
AC:
16
AN:
152164
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.00432
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:
0.00
GnomAD2 exomes
AF:
0.000211
AC:
53
AN:
251382
AF XY:
0.000155
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00466
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000528
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.000119
AC:
174
AN:
1461892
Hom.:
0
Cov.:
34
AF XY:
0.000103
AC XY:
75
AN XY:
727248
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33480
American (AMR)
AF:
0.00
AC:
0
AN:
44722
Ashkenazi Jewish (ASJ)
AF:
0.00517
AC:
135
AN:
26136
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39700
South Asian (SAS)
AF:
0.00
AC:
0
AN:
86258
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53420
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5768
European-Non Finnish (NFE)
AF:
0.0000162
AC:
18
AN:
1112012
Other (OTH)
AF:
0.000348
AC:
21
AN:
60396
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.474
Heterozygous variant carriers
0
12
24
37
49
61
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
4
8
12
16
20
<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:
0.000105
AC:
16
AN:
152164
Hom.:
0
Cov.:
32
AF XY:
0.000108
AC XY:
8
AN XY:
74336
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
41436
American (AMR)
AF:
0.00
AC:
0
AN:
15270
Ashkenazi Jewish (ASJ)
AF:
0.00432
AC:
15
AN:
3472
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5196
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4836
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10614
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
316
European-Non Finnish (NFE)
AF:
0.0000147
AC:
1
AN:
68020
Other (OTH)
AF:
0.00
AC:
0
AN:
2092
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.456
Heterozygous variant carriers
0
2
3
5
6
8
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
2
4
6
8
10
<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:
0.000185
Hom.:
0
Bravo
AF:
0.000117
ExAC
AF:
0.000107
AC:
13
EpiCase
AF:
0.0000545
EpiControl
AF:
0.0000593

ClinVar

ClinVar submissions
Significance:Conflicting classifications of pathogenicity; other
Revision:criteria provided, conflicting classifications
View on ClinVar
Pathogenic
VUS
Benign
Condition
-
2
-
Carnitine palmitoyltransferase II deficiency (3)
-
1
-
Carnitine palmitoyl transferase II deficiency, myopathic form;C1833511:Carnitine palmitoyl transferase II deficiency, severe infantile form;C1833518:Carnitine palmitoyl transferase II deficiency, neonatal form (1)
-
-
1
not specified (1)
-
-
-
not provided (1)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.95
BayesDel_addAF
Pathogenic
0.40
D
BayesDel_noAF
Pathogenic
0.50
CADD
Uncertain
25
DANN
Uncertain
1.0
DEOGEN2
Uncertain
0.67
D
Eigen
Pathogenic
0.87
Eigen_PC
Pathogenic
0.81
FATHMM_MKL
Pathogenic
0.99
D
LIST_S2
Benign
0.82
T
M_CAP
Pathogenic
0.37
D
MetaRNN
Pathogenic
0.76
D
MetaSVM
Pathogenic
1.1
D
MutationAssessor
Pathogenic
3.3
M
PhyloP100
7.7
PrimateAI
Uncertain
0.63
T
PROVEAN
Uncertain
-3.9
D
REVEL
Pathogenic
0.95
Sift
Uncertain
0.028
D
Sift4G
Uncertain
0.035
D
Polyphen
0.99
D
Vest4
0.94
MutPred
0.95
Loss of sheet (P = 0.0357)
MVP
1.0
MPC
0.53
ClinPred
0.50
D
GERP RS
5.8
Varity_R
0.58
gMVP
0.74
Mutation Taster
=6/94
disease causing

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

Other links and lift over

dbSNP: rs74315297; hg19: chr1-53676688; API