Carnitine Palmitoyltransferase II (CPT II) Deficiency


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Introduction

The CPT2 gene, carnitine palmitoyltransferase 2, is located on chromosome 1p32.3 and has 5 exons spanning ~20kb (1). It encodes a 658 amino acid nuclear protein, carnitine palmitoyltransferase II or CPT II, which is transported to the mitochondrial inner membrane (2). Together with carnitine palmitoyltransferase I, carnitine palmitoyltransferase II oxidizes long-chain fatty acids in the mitochondria (3). The protein is involved in the intramitochondrial synthesis of acylcarnitines from accumulated acyl-CoA metabolites (4,5) and their reconversion back into the respective acyl-CoA esters that can then undergo beta-oxidation, an essential step for the mitochondrial uptake of long-chain fatty acids and their subsequent beta-oxidation in the mitochondrion. The enzyme is active with medium (C8-C12) and long-chain (C14-C18) acyl-CoA esters (5).

The protein is expressed in liver, colon and other tissues (6).

More than 160 disease-causing variants in the CPT2 gene have been identified in CPT patients and are represented in this database. The variants occur across the entire length of the gene and include frameshift, splice site, copy-number, nonsense and missense variants (7).

Variant List

To see more information, click on the variant in the table. Hover on the Variant in the table to see its location on the gene . For more information on table headers, HGVS nomenclature, and variant classification, please use the following links here.​​

Gene Structure
Variant IDVariantAmino Acid ChangeGene SymbolVariant TypeEffect TypeDisplay Variant ClassificationDisease SubtypeTimes ObservedPhenotypePMIDLocationPresent in ClinVar
CPT2_0166c.?p.His555GlnCPT2MissenseUncertain SignificanceCPT II<539375714Exon 5Unknown
CPT2_0010c.?p.Val605LeuCPT2MissensePathogenicCPT II<5Bilateral oculomotor disturbance, Bilateral ptosis, Cataracts, Cognitive decline Show More >>31348995Unknown
CPT2_0167c.?p.Gln304HisCPT2MissenseUncertain SignificanceCPT II<537510298Exon 4Unknown
CPT2_0011c.?p.Leu72PheCPT2MissenseLikely PathogenicCPT II<5Hypoglycemia, Liver abnormality14605500Unknown
CPT2_0008c.?p.Gly600ArgCPT2MissenseLikely PathogenicCPT II<5Arrhythmia, Liver abnormality14605500Unknown
CPT2_0168c.?p.Phe352LeuCPT2MissenseLikely PathogenicCPT II<538650450Exon 4Unknown
CPT2_0169c.?p.?CPT2UNKNOWNCPT II<5Exercise intolerance, Liver abnormality, Malaise/fatigue, Muscle stiffness, Muscle weakness, Myalgia, Renal insufficiency/failure, Rhabdomyolysis
CPT2_0004c.?p.His369GlnCPT2MissenseLikely PathogenicCPT II<5Muscle switching, Myalgia, Myoglobinuria23911907Unknown
CPT2_0007c.?p.Phe448LeuCPT2MissenseLikely PathogenicCPT II<5Abnormal renal morphology, Abnormality of metabolism/homeostasis, Absence of cor Show More >>11477613Unknown
CPT2_0001c.?p.Tyr290*CPT2NonsensePathogenicCPT II<5Abnormal renal morphology, Renal insufficiency/failure14605500Unknown
CPT2_0012c.28_29insAGCAAGp.Trp10*CPT2InsertionNonsensePathogenicCPT II<5Abnormal renal morphology, Facial dysmorphia, Polymicrogyria of cns with calcification30293990Exon 1Yes
CPT2_0013c.38delp.Gly13Alafs*60CPT2DeletionFrameshiftPathogenicCPT II<516996287Exon 1Yes
CPT2_0014c.36_43dupp.Ala15Glyfs*61CPT2DuplicationFrameshiftPathogenicCPT II<516996287Exon 1No
CPT2_0015c.62C>Ap.Pro21HisCPT2SNVMissenseLikely PathogenicCPT II<5Gastrointestinal-other, Hypotonia, Muscle weakness, Poor oral intake22494076Exon 1Yes
CPT2_0016c.98delp.Gln33Argfs*40CPT2DeletionFrameshiftPathogenicCPT II<5Muscle weakness, Myoglobinuria21913903, 30957255Exon 1Yes
CPT2_0017c.99G>Cp.Gln33HisCPT2SNVMissenseLikely PathogenicCPT II<5Gastrointestinal-other, Hypotonia, Muscle weakness, Poor oral intake22494076Exon 1Yes
CPT2_0170c.106C>Tp.Gln36TerCPT2SNVNonsensePathogenicCPT II<537987475Exon 1No
CPT2_0018c.110_111dupp.Ser38Alafs*36CPT2DuplicationFrameshiftPathogenicCPT II11-20Abnormal renal morphology, Abnormality of blood cells, Abnormality of metabolism Show More >>10862092, 12410208, 12673791, Show More >>Exon 1Yes
CPT2_0019c.122C>Tp.Pro41LeuCPT2SNVMissenseUncertain SignificanceCPT II<5Rhabdomyolysis22899091Exon 1Yes
CPT2_0020c.122_130delp.Pro41_Met43delCPT2DeletionDeletionUncertain SignificanceCPT II<5Encephalopathy, Seizure35281663Exon 1Yes
CPT2_0171c.125C>Tp.Thr42IleCPT2SNVMissenseUncertain SignificanceCPT II<538651393Exon 1No
CPT2_0021c.131_133delinsCCCp.His44_Tyr45delinsProHisCPT2DelinsMissenseUncertain SignificanceCPT II<5Elevated circulating creatine kinase concentration, Myopathy, RhabdomyolysisExon 1Yes
CPT2_0022c.136C>Tp.Gln46*CPT2SNVNonsensePathogenicCPT II<5Abnormality of metabolism/homeostasis, Hyperammonemia, Hypoglycemia, Hypothermia31638495Exon 1No
CPT2_0172c.137A>Gp.Gln46ArgCPT2SNVMissenseUncertain SignificanceCPT II<5Myalgia, Rhabdomyolysis38516404Exon 1No
CPT2_0023c.149C>Ap.Pro50HisCPT2SNVMissensePathogenicCPT II30+Decreased feeding, Diarrhea, Elevated circulating creatine kinase concentration, Show More >>10398218, 10862092, 12410208, Show More >>Exon 1Yes
CPT2_0024c.151A>Gp.Arg51GlyCPT2SNVMissenseUncertain SignificanceCPT II<5Abnormality of metabolism/homeostasis, Hypoglycemia, Liver abnormality, Myalgia, Reye syndrome-like episodes, Seizure, Unconsciousness22841441, 29552494Exon 1No
CPT2_0025c.152+5G>AIntronicCPT2SNVSplice regionPathogenicCPT II5-10Cardiomyopathy, Elevated circulating creatine kinase concentration, EncephalopathyIntron 1Yes
CPT2_0173c.153-2A>Gp.?CPT2SNVSplice acceptorPathogenicCPT II<538650450Intron 1No
CPT2_0026c.161T>Gp.Ile54SerCPT2SNVMissenseUncertain SignificanceCPT II<5Fever, Reduced feeding, Vomiting35859960Exon 2No
CPT2_0027c.164C>Gp.Pro55ArgCPT2SNVMissenseLikely PathogenicCPT II<5Abnormal renal morphology, Developmental delay, Periventricular calcifications, Prominent lenticulostriate vascular markings, Ventriculomegaly18550408Exon 2Yes
CPT2_0028c.182_203delp.Ile61Argfs*5CPT2DeletionFrameshiftPathogenicCPT II<5Muscle weakness, Myoglobinuria23475205, 30455135, 30897730Exon 2No
CPT2_0029c.200C>Gp.Ala67GlyCPT2SNVMissenseUncertain SignificanceCPT II<5Hip dysplasia, Malaise/fatigue, Muscle weakness, Myalgia, Rhabdomyolysis, Vomiting19239046, 29478820, 38015438, Show More >>Exon 2Yes
CPT2_0030c.213_214delp.Leu72Glufs*2CPT2DeletionFrameshiftPathogenicCPT II<5Elevated circulating creatine kinase concentration, OtherExon 2Yes
CPT2_0174c.214_215delp.Leu72Glufs*2CPT2DeletionFrameshiftPathogenicCPT II<537987475Exon 2No
CPT2_0031c.233+2T>AIntronicCPT2SNVSplice donorPathogenicCPT II<5Abnormality of metabolism/homeostasis, Arrhythmia, Elevated circulating creatine Show More >>28747690, 33610471Intron 2No
CPT2_0032c.234-1G>AIntronicCPT2SNVSplice acceptorPathogenicCPT II5-10Arrhythmia, Cardiac-other, Hypotonia, Lethargy, Liver abnormality, Pulmonary/respiratory, Seizure12560872Intron 2Yes
CPT2_0033c.250T>Cp.Cys84ArgCPT2SNVMissenseUncertain SignificanceCPT II<516996287Exon 3No
CPT2_0175c.251G>Ap.Cys84TyrCPT2SNVMissenseUncertain SignificanceCPT II<5Abnormal renal morphology, Cardiac-other, Dpm, Encephalopathy, Oh, Potter facies33532864Exon 3Yes
CPT2_0034c.256_257delp.Ser86Phefs*2CPT2DeletionFrameshiftPathogenicCPT II<516996287Exon 3Yes
CPT2_0035c.298delp.Val100Leufs*30CPT2DeletionFrameshiftPathogenicCPT II<5Myalgia, Rhabdomyolysis36109795Exon 3Yes
CPT2_0036c.302C>Tp.Ala101ValCPT2SNVMissenseLikely BenignCPT II<5Rhabdomyolysis16996287, 32978841Exon 3Yes
CPT2_0037c.313C>Tp.Gln105*CPT2SNVNonsensePathogenicCPT II<5Rhabdomyolysis28801073Exon 3No
CPT2_0038c.338C>Tp.Ser113LeuCPT2SNVMissensePathogenicCPT II30+Abnormal emg, Abnormality of metabolism/homeostasis, Acute renal insufficiency, Show More >>10090476, 10398215, 10398218, Show More >>Exon 3Yes
CPT2_0176c.340G>Cp.Gly114ArgCPT2SNVMissenseUncertain SignificanceCPT II<5Exon 3No
CPT2_0039c.340+1G>AIntronicCPT2SNVSplice donorPathogenicCPT II<5Muscle weakness, Myoglobinuria23475205, 30455135, 30897730Intron 3Yes
CPT2_0040c.340+3A>TIntronicCPT2SNVSplice regionLikely PathogenicCPT II<5Exercise intolerance, Failure to thrive, Feeding difficulties, Hyperammonemia, Muscle weakness, Myalgia, Other, Rhabdomyolysis, Seizure28871440, 32928639Intron 3No
CPT2_0041c.340+5G>AIntronicCPT2SNVSplice regionLikely PathogenicCPT II<5Muscle weakness, Myalgia, Rhabdomyolysis12809643, 30455135, 30897730Intron 3Yes
CPT2_0042c.341-2621_1121delIntronicCPT2DeletionSplice acceptorUncertain SignificanceCPT II<5Acute tubular necrosis, Myoglobinuria, Myopathy, Rhabdomyolysis36109795Exon 4, Intron 3No
CPT2_0043c.341-2A>GIntronicCPT2SNVSplice acceptorPathogenicCPT II<530957255Intron 3Yes
CPT2_0044c.359A>Gp.Tyr120CysCPT2SNVMissensePathogenicCPT II5-10Elevated circulating creatine kinase concentration, Hypoglycemia, Liver abnormality, Myoglobinuria, Myopathy, Other, Rhabdomyolysis10862092, 16996287, 18550408Exon 4Yes
CPT2_0045c.362T>Ap.Leu121GlnCPT2SNVMissensePathogenicCPT II<5Myoglobinuria21913903Exon 4No
CPT2_0177c.362T>Cp.Leu121ProCPT2SNVMissenseUNKNOWNCPT II<5Hypoglycemia, Hypotonia, Myalgia, RhabdomyolysisExon 4No
CPT2_0046c.365C>Tp.Ser122PheCPT2SNVMissenseLikely PathogenicCPT II5-10Encephalopathy, Febrile episode, Rhabdomyolysis30514913, 37987475Exon 4Yes
CPT2_0047c.370C>Tp.Arg124*CPT2SNVNonsensePathogenicCPT II11-20Abnormal renal morphology, Abnormality of metabolism/homeostasis, Arrhythmia, Ca Show More >>16996287, 18645163, 22652984, Show More >>Exon 4Yes
CPT2_0048c.371G>Ap.Arg124GlnCPT2SNVMissenseLikely PathogenicCPT II<5Rhabdomyolysis12673791, 12840153, 21378393, Show More >>Exon 4Yes
CPT2_0049c.371G>Cp.Arg124ProCPT2SNVMissenseLikely PathogenicCPT II<5Abnormality of metabolism/homeostasis, Hyperammonemia, Hypoglycemia, Hypothermia31638495Exon 4Yes
CPT2_0178c.429_435delp.Glu144Metfs*10CPT2DeletionFrameshiftUncertain SignificanceCPT II<5Exon 4No
CPT2_0050c.437A>Cp.Asn146ThrCPT2SNVMissenseLikely PathogenicCPT II<5Rhabdomyolysis12673791, 12840153, 21378393, Show More >>Exon 4No
CPT2_0051c.451C>Tp.Arg151TrpCPT2SNVMissensePathogenicCPT II5-10Abnormality of metabolism/homeostasis, Cardiac arrest, Cardiac-other, Cardiomyop Show More >>17936304, 28529889, 28801073, Show More >>Exon 4Yes
CPT2_0052c.452G>Ap.Arg151GlnCPT2SNVMissenseLikely PathogenicCPT II11-20Abnormality of metabolism/homeostasis, Arrhythmia, Cardiac-other, Cardiomyopathy Show More >>12673791, 14605500, 17936304, Show More >>Exon 4Yes
CPT2_0053c.481C>Tp.Arg161TrpCPT2SNVMissenseLikely PathogenicCPT II5-10Cardiac arrest, Cola colored urine, Diffuse brain edema, Encephalopathy, General Show More >>12673791, 22854105, 28801073, Show More >>Exon 4Yes
CPT2_0054c.482G>Ap.Arg161GlnCPT2SNVMissenseLikely PathogenicCPT II<5Anuria, Especially in his lower extremities, Fever, Malaise/fatigue, Muscle weak Show More >>31770251, 39429887Exon 4Yes
CPT2_0055c.517C>Tp.Pro173SerCPT2SNVMissenseUncertain SignificanceCPT II<5Muscle weakness, Myoglobinuria21913903Exon 4Yes
CPT2_0056c.520G>Ap.Glu174LysCPT2SNVMissensePathogenicCPT II11-20Abnormality of metabolism/homeostasis, Arrhythmia, Cardiac arrest, Cardiac-other Show More >>18577113, 22841441, 25919294, Show More >>Exon 4Yes
CPT2_0057c.534_558delinsTp.Leu178_Ile186delinsPheCPT2DelinsProtein alteringPathogenicCPT II11-20Abnormality of metabolism/homeostasis, Arrhythmia, Cardiac-other, Cardiomyopathy Show More >>10862092, 12560872, 16168441, Show More >>Exon 4Yes
CPT2_0179c.543_558delinsTp.Lys182_Ile186delCPT2DelinsProtein alteringUNKNOWNCPT II<5Cardiac arrest, Hypoglycemia, OtherExon 4No
CPT2_0058c.563T>Cp.Phe188SerCPT2SNVMissenseLikely PathogenicCPT II<5Myalgia, Rhabdomyolysis15613406Exon 4No
CPT2_0059c.577C>Tp.Arg193CysCPT2SNVMissenseLikely PathogenicCPT II<5Limb-girdle muscular dystrophy, Myalgia26436962Exon 4Yes
CPT2_0060c.587C>Tp.Pro196LeuCPT2SNVMissenseUncertain SignificanceCPT II5-10Abnormality of blood cells, Cardiomyopathy, Hellp syndrome, Hemolysis, Liver abnormality, Myalgia, Pulmonary/respiratory, Rhabdomyolysis35281663Exon 4Yes
CPT2_0061c.593C>Gp.Ser198CysCPT2SNVMissenseUncertain SignificanceCPT II<5Dysphonia, Elevated circulating creatine kinase concentration, Hoarseness, Respiratory tract infection, Visceral leishmaniasis35572607Exon 4No
CPT2_0062c.602G>Ap.Trp201*CPT2SNVNonsensePathogenicCPT II<5Pain, Rhabdomyolysis20505667, 30007356Exon 4Yes
CPT2_0063c.611C>Tp.Ala204ValCPT2SNVMissenseUncertain SignificanceCPT II<5Exon 4Yes
CPT2_0064c.628T>Gp.Tyr210AspCPT2SNVMissenseLikely PathogenicCPT II<5Cardiomyopathy14605500Exon 4No
CPT2_0065c.631C>Tp.Pro211SerCPT2SNVMissenseUncertain SignificanceCPT II<5Limb-girdle muscle weakness, Muscle weakness, Myalgia, Myoglobinuria, Rhabdomyolysis35342266Exon 4Yes
CPT2_0066c.638A>Gp.Asp213GlyCPT2SNVMissensePathogenicCPT II5-10Apnoea, Hypoglycemia, Hypothermia, Lethargy, Poor feeding, Pulmonary/respiratory15622536, 34626609, 35066899Exon 4Yes
CPT2_0067c.641T>Cp.Met214ThrCPT2SNVMissenseLikely PathogenicCPT II<5Rhabdomyolysis12707442, 28801073, 30514913Exon 4Yes
CPT2_0068c.647A>Gp.Gln216ArgCPT2SNVMissenseLikely PathogenicCPT II<521921422Exon 4No
CPT2_0069c.656G>Ap.Arg219GlnCPT2SNVMissenseUncertain SignificanceCPT II<530514913, 37987475Exon 4Yes
CPT2_0180c.673C>Tp.Arg225CysCPT2SNVMissenseUncertain SignificanceCPT II<532528171Exon 4Yes
CPT2_0070c.680C>Tp.Pro227LeuCPT2SNVMissensePathogenicCPT II21-30Abnormal cerebral cortex morphology, Abnormal renal morphology, Abnormality of m Show More >>18550408, 21709843, 25827434, Show More >>Exon 4Yes
CPT2_0071c.691C>Tp.Arg231TrpCPT2SNVMissensePathogenicCPT II<5Myalgia, Myoglobinuria16996287, 24602495, 30455135, Show More >>Exon 4Yes
CPT2_0181c.725dupp.His242Glnfs*14CPT2DuplicationFrameshiftPathogenicCPT II<5Exon 4Yes
CPT2_0182c.729_731delp.Leu244delCPT2DeletionDeletionLikely PathogenicCPT II<5Abnormal renal morphology, Arrhythmia, Hypotonia, Insufficient breastfeeding, Muscle weakness, Pulmonary/respiratory, Seizure, Urine discoloration31199774, 39156350Exon 4Yes
CPT2_0072c.733G>Ap.Val245IleCPT2SNVMissenseUncertain SignificanceCPT II<5Exon 4Yes
CPT2_0073c.739A>Tp.Arg247TrpCPT2SNVMissenseLikely PathogenicCPT II<5Exercise intolerance, Myalgia, Myoglobinuria, Renal insufficiency/failure17936304Exon 4Yes
CPT2_0074c.746delp.Gly249Glufs*16CPT2DeletionFrameshiftPathogenicCPT II<5Brain edema, Bulged anterior fontanelle, Lethargy, Seizure, Sudden death21921422, 25919294Exon 4No
CPT2_0075c.748_749delp.Asn250Phefs*5CPT2DeletionFrameshiftPathogenicCPT II<518925671Exon 4Yes
CPT2_0161c.755A>Tp.Tyr252PheCPT2SNVMissenseUncertain SignificanceCPT II<5Cardiomyopathy, Elevated circulating creatine kinase concentration, Liver abnorm Show More >>Exon 4Yes
CPT2_0183c.764A>Gp.Asp255GlyCPT2SNVMissenseUncertain SignificanceCPT II<5Circulatory system, Digestive system, Endocrine system, Nervous system, Urinary system31501239, 38650450Exon 4Yes
CPT2_0184c.798dupp.Ser267Leufs*28CPT2DuplicationFrameshiftPathogenicCPT II<5Exon 4Yes
CPT2_0185c.852delp.Glu285Serfs*7CPT2DeletionFrameshiftUNKNOWNCPT II<5Cardiac arrest, Hypoglycemia, OtherExon 4Yes
CPT2_0076c.853G>Ap.Glu285LysCPT2SNVMissenseUncertain SignificanceCPT II<5Exon 4Yes
CPT2_0186c.866_872delp.Ala289Glyfs*16CPT2DeletionFrameshiftUncertain SignificanceCPT II<5Exon 4No
CPT2_0162c.878G>Tp.Ser293IleCPT2SNVMissenseUncertain SignificanceCPT II<5Elevated circulating creatine kinase concentration, Hypoglycemia, Liver abnormality, RhabdomyolysisExon 4Yes
CPT2_0077c.886C>Tp.Arg296*CPT2SNVNonsensePathogenicCPT II<5Fever, Myalgia, Rhabdomyolysis14605500, 27974123, 34394177Exon 4Yes
CPT2_0078c.887G>Ap.Arg296GlnCPT2SNVMissenseLikely PathogenicCPT II<5Dehydration, Liver abnormality, Myalgia, Restlessness, Rhabdomyolysis, Seizure, Vomiting14605500, 35028265Exon 4Yes
CPT2_0079c.887G>Tp.Arg296LeuCPT2SNVMissenseLikely PathogenicCPT II<5Muscle weakness, Myalgia, Myoglobinuria21913903, 37510298Exon 4No
CPT2_0080c.896_906dupp.Arg303Glyfs*8CPT2DuplicationFrameshiftPathogenicCPT II<535360862Exon 4Yes
CPT2_0081c.921_923delp.Met307_Ser308delinsIleCPT2DeletionDeletionUncertain SignificanceCPT II<5Exon 4Yes
CPT2_0082c.930C>Tp.Gly310=CPT2SNVSilentUncertain SignificanceCPT II<516996287Exon 4Yes
CPT2_0083c.969_970delp.Phe323Leufs*6CPT2DeletionFrameshiftPathogenicCPT II<5Cardiac arrest, Lost consciousness, Reyes-like syndrome28649538Exon 4No
CPT2_0084c.977G>Ap.Cys326TyrCPT2SNVMissenseUncertain SignificanceCPT II<5Myoglobinuria21913903Exon 4Yes
CPT2_0085c.983A>Gp.Asp328GlyCPT2SNVMissensePathogenicCPT II5-10Arrhythmia, Cardiomyopathy, Gastrointestinal-other, Hypoglycemia, Hyporeactivity, Hypotonia, Liver abnormality, Renal insufficiency/failure12673791, 12840153, 14634971, Show More >>Exon 4Yes
CPT2_0086c.989dupp.Ile332Hisfs*2CPT2DuplicationFrameshiftPathogenicCPT II<535360862, 36927542Exon 4Yes
CPT2_0187c.1033G>Ap.Gly345ArgCPT2SNVMissenseUncertain SignificanceCPT II<5Circulatory system, Digestive system, Endocrine system, Nervous system, Urinary system31501239Exon 4Yes
CPT2_0087c.1048C>Tp.Arg350CysCPT2SNVMissenseUncertain SignificanceCPT II<5Elevated circulating creatine kinase concentration, Myopathy, RhabdomyolysisExon 4Yes
CPT2_0088c.1054T>Cp.Phe352LeuCPT2SNVMissenseLikely PathogenicCPT II<535360862Exon 4No
CPT2_0089c.1073T>Gp.Leu358ArgCPT2SNVMissenseUncertain SignificanceCPT II<5Apnoea, Hypoglycemia, Hypothermia, Lethargy, Poor feeding, Pulmonary/respiratory34626609Exon 4Yes
CPT2_0188c.1115A>Gp.His372ArgCPT2SNVMissenseLikely PathogenicCPT II<537987475Exon 4Yes
CPT2_0090c.1115_1116delinsTTp.His372LeuCPT2DelinsMissenseUncertain SignificanceCPT II<5Exon 4Yes
CPT2_0091c.1117T>Cp.Ser373ProCPT2SNVMissenseUncertain SignificanceCPT II<5Cerebral palsy, Hemiparesis, Mild cognitive delay, Muscle weakness, Myopathy, Rhabdomyolysis30149802Exon 4No
CPT2_0092c.1121G>Ap.Trp374*CPT2SNVNonsensePathogenicCPT II<5Gastrointestinal-other28801073, 37987475Exon 4Yes
CPT2_0163c.1124G>Tp.Gly375ValCPT2SNVMissenseUncertain SignificanceCPT II<5Elevated circulating creatine kinase concentration, Myopathy, Peripheral neuropathyExon 4Yes
CPT2_0093c.1130G>Ap.Gly377AspCPT2SNVMissenseLikely PathogenicCPT II<5Pain, Rhabdomyolysis20505667, 30007356Exon 4No
CPT2_0094c.1145G>Ap.Arg382LysCPT2SNVMissenseUncertain SignificanceCPT II<510607472Exon 4Yes
CPT2_0164c.1145G>Cp.Arg382ThrCPT2SNVMissenseUncertain SignificanceCPT II<5Cardiomyopathy, Liver abnormalityExon 4Yes
CPT2_0095c.1148T>Ap.Phe383TyrCPT2SNVMissensePathogenicCPT II30+Abnormality of metabolism/homeostasis, Acute muscle weakness, Ankle dorsiflexor Show More >>12673791, 17709715, 18363739, Show More >>Exon 4Yes
CPT2_0096c.1171A>Gp.Ser391GlyCPT2SNVMissenseUncertain SignificanceCPT II<5Myalgia, Renal insufficiency/failure, Rhabdomyolysis29478820Exon 4No
CPT2_0097c.1223_1224delp.Ser408Tyrfs*13CPT2DeletionFrameshiftPathogenicCPT II<5Malaise/fatigue, Myalgia, Pulmonary/respiratory, Renal insufficiency/failure, Rhabdomyolysis, Urine discoloration15754283, 18363739Exon 4Yes
CPT2_0098c.1234G>Tp.Val412LeuCPT2SNVMissenseUncertain SignificanceCPT II<5Myalgia35342266Exon 4Yes
CPT2_0099c.1239G>Ap.Gln413=CPT2SNVSilentUncertain SignificanceCPT II<5Asthenia, Muscle stiffness, Myalgia, Myoglobinuria20810031Exon 4No
CPT2_0100c.1239_1240delp.Lys414Thrfs*7CPT2DeletionFrameshiftPathogenicCPT II30+Abnormal renal morphology, Abnormality of metabolism/homeostasis, Absence of cor Show More >>10090476, 10398218, 11477613, Show More >>Exon 4Yes
CPT2_0165c.1259C>Gp.Thr420SerCPT2SNVMissenseUncertain SignificanceCPT II<5Exon 4Yes
CPT2_0101c.1273_1274delp.Thr425Trpfs*6CPT2DeletionFrameshiftPathogenicCPT II<516996287Exon 4Yes
CPT2_0102c.1301T>Cp.Phe434SerCPT2SNVMissenseUncertain SignificanceCPT II<5Arrhythmia, Elevated circulating creatine kinase concentration, Hypothermia, Hypotonia, Liver abnormality, Malaise/fatigue33610471, 35360862, 38650450Exon 4No
CPT2_0009c.1333T>Cp.Cys445ArgCPT2SNVMissenseUncertain SignificanceCPT II<530881520Exon 4Yes
CPT2_0189c.1336G>Ap.Val446IleCPT2SNVMissenseUncertain SignificanceCPT II<537510298Exon 4Yes
CPT2_0103c.1342T>Cp.Phe448LeuCPT2SNVMissenseUncertain SignificanceCPT II21-30Abnormal renal morphology, Cardiac-other, Elevated circulating creatine kinase c Show More >>10090476, 10398218, 12673791, Show More >>Exon 4Yes
CPT2_0104c.1345C>Ap.Gln449LysCPT2SNVMissenseUncertain SignificanceCPT II<5Hypoglycemia28801073, 30514913Exon 4No
CPT2_0105c.1348A>Tp.Arg450*CPT2SNVNonsensePathogenicCPT II<5Asthenia, Elevated circulating creatine kinase concentration, Exercise intoleran Show More >>20810031, 21913903, 31517061Exon 4Yes
CPT2_0003c.1352G>Ap.Gly451GluCPT2SNVMissenseUncertain SignificanceCPT II<5Myoglobinuria23475205Exon 4No
CPT2_0106c.1369A>Tp.Lys457*CPT2SNVNonsensePathogenicCPT II5-10Chest tightness, Decreased feeding, Exercise intolerance, Muscle weakness, Myalgia, Myoglobinuria, Pain, Rhabdomyolysis, Vomiting16996287, 30094188, 33123633, Show More >>Exon 4Yes
CPT2_0190c.1393G>Ap.Ala465ThrCPT2SNVMissenseUncertain SignificanceCPT II<536927542Exon 4Yes
CPT2_0107c.1420G>Cp.Ala474ProCPT2SNVMissenseUncertain SignificanceCPT II<5Myalgia, Renal insufficiency/failure, Rhabdomyolysis29478820Exon 4No
CPT2_0108c.1429C>Tp.Arg477TrpCPT2SNVMissenseUncertain SignificanceCPT II<5Hyperck, Rhabdomyolysis28801073, 29552494, 31372341, Show More >>Exon 4Yes
CPT2_0005c.1436A>Tp.Tyr479PheCPT2SNVMissenseLikely PathogenicCPT II<5Myoglobinuria12707442, 24602495Exon 4Yes
CPT2_0109c.1436A>Gp.Tyr479CysCPT2SNVMissenseLikely PathogenicCPT II<518925671Exon 4Yes
CPT2_0110c.1438G>Ap.Gly480ArgCPT2SNVMissenseUncertain SignificanceCPT II<516996287Exon 4Yes
CPT2_0111c.1444_1447delp.Thr482Trpfs*49CPT2DeletionFrameshiftPathogenicCPT II<516996287, 33123633Exon 4Yes
CPT2_0191c.1459G>Tp.Glu487TerCPT2SNVNonsensePathogenicCPT II<5Abnormal renal morphology, Cardiac-other, Dpm, Encephalopathy, Oh, Potter facies33532864Exon 4Yes
CPT2_0112c.1459G>Ap.Glu487LysCPT2SNVMissenseLikely PathogenicCPT II5-10Myalgia, Myoglobinuria, Pigmenturia, Rhabdomyolysis10868782, 30455135, 30897730, Show More >>Exon 4Yes
CPT2_0113c.1460A>Cp.Glu487AlaCPT2SNVMissensePathogenicCPT II<5Exon 4Yes
CPT2_0114c.1489G>Ap.Gly497SerCPT2SNVMissensePathogenicCPT II<5Muscle switching, Myalgia, Myoglobinuria23911907, 30887117Exon 4Yes
CPT2_0192c.1492C>Tp.Arg498CysCPT2SNVMissensePathogenicCPT II<537987475Exon 4Yes
CPT2_0115c.1493G>Tp.Arg498LeuCPT2SNVMissenseLikely PathogenicCPT II<5Anuria, Fever, Malaise/fatigue, Myalgia, Pulmonary/respiratory, Renal insufficiency/failure, Rhabdomyolysis, Urine discoloration31770251, 38650450Exon 4No
CPT2_0116c.1505T>Cp.Ile502ThrCPT2SNVMissensePathogenicCPT II5-10Myoglobinuria10398215, 10862092, 30957255Exon 4Yes
CPT2_0117c.1507C>Tp.Arg503CysCPT2SNVMissensePathogenicCPT II11-20Abnormality of metabolism/homeostasis, Cardiac-other, Carnitine palmitoyltransfe Show More >>10090476, 10398218, 10873395, Show More >>Exon 4Yes
CPT2_0193c.1508G>Ap.Arg503HisCPT2SNVMissensePathogenicCPT II<537987475Exon 4Yes
CPT2_0118c.1511C>Tp.Pro504LeuCPT2SNVMissensePathogenicCPT II11-20Abnormality of metabolism/homeostasis, Acute cardiomyopathy, Arrhythmia, Cardiac Show More >>16996287, 17936304, 18306170, Show More >>Exon 4Yes
CPT2_0194c.1519G>Ap.Val507IleCPT2SNVMissenseUncertain SignificanceCPT II<537510298Exon 4Yes
CPT2_0119c.1525A>Gp.Thr509AlaCPT2SNVMissenseLikely PathogenicCPT II<528801073, 30514913Exon 4No
CPT2_0195c.1543G>Cp.Ala515ProCPT2SNVMissenseUncertain SignificanceCPT II<538650450Exon 4No
CPT2_0120c.1547T>Cp.Phe516SerCPT2SNVMissenseLikely PathogenicCPT II<5Abnormality of metabolism/homeostasis, Arrhythmia, Asthenia, Cardiac arrest, Car Show More >>20810031, 21913903, 33610471, Show More >>Exon 4Yes
CPT2_0121c.1569_1570delp.His523Glnfs*4CPT2DeletionFrameshiftPathogenicCPT II<516996287Exon 4Yes
CPT2_0122c.1579G>Ap.Glu527LysCPT2SNVMissenseUncertain SignificanceCPT II<5Myalgia, Rhabdomyolysis28801073Exon 4No
CPT2_0196c.1613delp.Tyr538Serfs*5CPT2DeletionFrameshiftPathogenicCPT II<538651393Exon 4Yes
CPT2_0123c.1634A>Cp.Glu545AlaCPT2SNVMissenseUncertain SignificanceCPT II<5Rhabdomyolysis20952238, 28801073, 30514913, Show More >>Exon 4Yes
CPT2_0124c.1634_1636delp.Glu545delCPT2DeletionDeletionUncertain SignificanceCPT II<516996287Exon 4No
CPT2_0125c.1645+5G>AIntronicCPT2SNVSplice regionUncertain SignificanceCPT II<516996287Intron 4No
CPT2_0126c.1645+20C>TIntronicCPT2SNVIntronicUncertain SignificanceCPT II<5Intron 4Yes
CPT2_0127c.1646-1G>TIntronicCPT2SNVSplice acceptorPathogenicCPT II<530957255Intron 4No
CPT2_0128c.1646G>Ap.Gly549AspCPT2SNVMissenseLikely PathogenicCPT II<510398218, 16996287Exon 5Yes
CPT2_0129c.1647_1650delp.Gln550Alafs*32CPT2DeletionFrameshiftPathogenicCPT II<5Myoglobinuria24602495Exon 5No
CPT2_0130c.1649A>Gp.Gln550ArgCPT2SNVMissenseUncertain SignificanceCPT II<59758712Exon 5No
CPT2_0197c.1651G>Ap.Gly551SerCPT2SNVMissenseUncertain SignificanceCPT II<5Elevated circulating creatine kinase concentration, RhabdomyolysisExon 5Yes
CPT2_0131c.1657G>Ap.Asp553AsnCPT2SNVMissenseLikely PathogenicCPT II<5Myoglobinuria17936304, 7711730Exon 5Yes
CPT2_0132c.1660C>Tp.Arg554*CPT2SNVNonsensePathogenicCPT II<5Myoglobinuria17936304Exon 5Yes
CPT2_0198c.1661G>Ap.Arg554GlnCPT2SNVMissenseUncertain SignificanceCPT II<5Exon 5Yes
CPT2_0133c.1665C>Gp.His555GlnCPT2SNVMissenseUncertain SignificanceCPT II<5Lethargy, Muscle spasm, Muscle weakness, Myalgia, Urine discoloration29744303Exon 5Yes
CPT2_0134c.1666_1667delp.Leu556Valfs*16CPT2DeletionFrameshiftPathogenicCPT II5-10Diarrhea, Muscle weakness, Myalgia, Renal insufficiency/failure, Rhabdomyolysis28871440, 29478820, 32928639Exon 5Yes
CPT2_0135c.1678C>Tp.Arg560TrpCPT2SNVMissenseLikely PathogenicCPT II5-10Rhabdomyolysis30514913, 37987475Exon 5Yes
CPT2_0136c.1679G>Ap.Arg560GlnCPT2SNVMissenseUncertain SignificanceCPT II<516996287Exon 5Yes
CPT2_0137c.1711C>Ap.Pro571ThrCPT2SNVMissensePathogenicCPT II11-20Cough, Fever28771436, 35360862, 38168614Exon 5Yes
CPT2_0138c.1724T>Cp.Leu575ProCPT2SNVMissenseLikely PathogenicCPT II<5Asthenia, Malaise/fatigue, Muscle weakness, Myoglobinuria, Pulmonary/respiratory20810031, 21913903Exon 5No
CPT2_0139c.1727A>Gp.Asp576GlyCPT2SNVMissenseLikely PathogenicCPT II<5Myoglobinuria17936304Exon 5No
CPT2_0140c.1737delp.Tyr579*CPT2DeletionFrameshiftPathogenicCPT II<5Arrhythmia, Cardiac-other, Cyanosis, Intra-alveolar hemorrhage, Liver abnormality, Pleural effusion18577113, 37987475Exon 5Yes
CPT2_0199c.1748delp.Asn583Thrfs*10CPT2DeletionFrameshiftPathogenicCPT II<538015438Exon 5No
CPT2_0141c.1749C>Ap.Asn583LysCPT2SNVMissenseUncertain SignificanceCPT II<534539730Exon 5Yes
CPT2_0200c.1754_1756dupp.Asn585_Val586insAspCPT2DuplicationInsertionUncertain SignificanceCPT II<538015438Exon 5No
CPT2_0142c.1763C>Gp.Ser588CysCPT2SNVMissenseLikely BenignCPT II<516996287Exon 5Yes
CPT2_0201c.1766C>Tp.Thr589MetCPT2SNVMissenseUncertain SignificanceCPT II<538650450Exon 5Yes
CPT2_0002c.1769G>Ap.Ser590AsnCPT2SNVMissenseUncertain SignificanceCPT II<5Myalgia, Myoglobinuria23475205Exon 5Yes
CPT2_0143c.1784delp.Pro595Glnfs*3CPT2DeletionFrameshiftPathogenicCPT II<5Abnormal renal morphology, Developmental delay, Periventricular calcifications, Show More >>18550408, 22899091Exon 5Yes
CPT2_0202c.1796T>Cp.Leu599ProCPT2SNVMissenseUncertain SignificanceCPT II<5Abnormality of metabolism/homeostasis, Elevated circulating creatine kinase concentration, Myoglobinuria38949266Exon 5No
CPT2_0144c.1798G>Ap.Gly600ArgCPT2SNVMissensePathogenicCPT II<533123633Exon 5Yes
CPT2_0145c.1803delp.Phe602Leufs*20CPT2DeletionFrameshiftPathogenicCPT II<5Abnormality of metabolism/homeostasis, Hypoglycemia, Liver abnormality23700290Exon 5No
CPT2_0146c.1806delp.Phe602Leufs*20CPT2DeletionFrameshiftPathogenicCPT II<5Abnormal renal morphology, Liver abnormality, Micrognathia, Oligohydramnios, Pulmonary/respiratory31599017Exon 5Yes
CPT2_0203c.1808C>Ap.Ala603AspCPT2SNVMissensePathogenicCPT II<5Exon 5No
CPT2_0147c.1810C>Tp.Pro604SerCPT2SNVMissenseUncertain SignificanceCPT II<516996287, 9758712Exon 5Yes
CPT2_0148c.1813G>Cp.Val605LeuCPT2SNVMissensePathogenicCPT II11-20Cardiac arrest, Coma, Encephalopathy, Hypoglycemia, Hypotonia, Loss of conscious Show More >>18306170, 18363739, 28649538, Show More >>Exon 5Yes
CPT2_0149c.1816_1817delp.Val606Leufs*2CPT2DeletionFrameshiftPathogenicCPT II<516996287Exon 5Yes
CPT2_0150c.1822G>Cp.Asp608HisCPT2SNVMissenseUncertain SignificanceCPT II<5Pain, Rhabdomyolysis12673791, 20505667Exon 5Yes
CPT2_0151c.1838G>Ap.Gly613GluCPT2SNVMissenseUncertain SignificanceCPT II<5Abnormal renal morphology, Cardiomyopathy, Hypoglycemia, Iugr28468868Exon 5No
CPT2_0152c.1858T>Cp.Trp620ArgCPT2SNVMissenseUncertain SignificanceCPT II<5Exon 5Yes
CPT2_0153c.1883A>Cp.Tyr628SerCPT2SNVMissenseLikely PathogenicCPT II5-10Abnormality of metabolism/homeostasis, Arrhythmia, Cardiac arrest, Cardiac-other Show More >>10398215, 10734268, 12673791, Show More >>Exon 5Yes
CPT2_0154c.1891C>Tp.Arg631CysCPT2SNVMissensePathogenicCPT II30+Cardiac-other, Cardiomyopathy, Coma, Dehydration, Exercise intolerance, Fever, H Show More >>1528846, 15754283, 16996287, Show More >>Exon 5Yes
CPT2_0155c.1892G>Ap.Arg631HisCPT2SNVMissenseUncertain SignificanceCPT II<5Muscle weakness, Myalgia, Rhabdomyolysis35256318Exon 5Yes
CPT2_0156c.1925_1937delp.Lys642Thrfs*6CPT2DeletionFrameshiftPathogenicCPT II<5Abnormal renal morphology, Abnormality of metabolism/homeostasis, Absence of cor Show More >>18550408Exon 5Yes
CPT2_0157c.1931T>Cp.Leu644SerCPT2SNVMissenseUncertain SignificanceCPT II<5Cardiac arrest21227726, 38015438Exon 5No
CPT2_0158c.1932dupp.Glu645Argfs*5CPT2DuplicationFrameshiftPathogenicCPT II5-10Elevated circulating creatine kinase concentration, Myalgia, Myoglobinuria, Rhabdomyolysis, Seizure17936304, 20810031, 21913903Exon 5Yes
CPT2_0159c.1933G>Tp.Glu645*CPT2SNVNonsensePathogenicCPT II<5Rhabdomyolysis30514913, 37987475Exon 5No
CPT2_0204c.1939A>Gp.Met647ValCPT2SNVMissenseUNKNOWNCPT II<5Cardiac-other, Exercise intolerance, Muscle weakness, Myalgia, RhabdomyolysisExon 5Yes
CPT2_0160c.1964C>Ap.Ser655TyrCPT2SNVMissenseUncertain SignificanceCPT II<5Elevated circulating creatine kinase concentration, MyopathyExon 5Yes
    Notes:
  • Click the PMID number to go to the corresponding publication.
  • All variants are referencing NM_000098.3 and there is no change between these versions with respect to the coding sequence.
  • Genomic coordinates are calculated based on variant data provided: in some cases coordinates are estimated in order to allow users to sort the variants linearly, by approximation.
  • Click the Present in ClinVar link to go to the corresponding ClinVar VariationID.
  • Don’t see a variant of interest? Contribute data through the Register Variant form.
  • Explore considerations about Variants of Uncertain Significance (VUS)
    Definition of acronyms:
  • "*": Referenced a stop codon insertion when listed under amino acid change.
  • CNV: Copy number variant which here describes a change 100 DNA nucleotides or larger.
  • SNV: Single DNA nucleotide variant
  • del: Deletion
  • dup: Duplication
  • fs: Frameshift
  • ins: Insertion

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