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[Clinical features and genetic analysis of a case with carnitine palmitoyltransferase 1A deficiency]
1Laboratory for Inborn Error of Metabolism, Institute of Pediatric Research, Affiliated Shenzhen Children's Hospital of Shantou University Medical College, Shenzhen, Guangdong 518038, China. 13008803656@163.com.
Objective:
To analyze the clinical and molecular features of a child with carnitine palmitoyltransferase 1A (CPT1A) deficiency.
Methods:
Clinical data of the child was collected. Blood acylcarnitine was determined with tandem mass spectrometry. DNA was extracted from the child and his parents. All exons and flanking regions of the CPT1A gene were analyzed by PCR and Sanger sequencing.
Results:
Analysis showed that the patient carried compound heterozygous mutations c.1787T>C and c.2201T>C of the CPT1A gene, which derived his father and mother, respectively. Both mutations were verified as novel through the retrieval of dbSNP, HGMD and 1000 genome databases. Bioinformatic analysis suggested that the mutations can affect protein function.
Conclusion:
Acyl carnitine analysis has been the main method for the diagnosis of CPT1A deficiency. The c.1787T>C and c.2201T>C mutations of the CPT1A gene probably underlie the disease in this patient. Gene testing can provide important clues for genetic counseling and prenatal diagnosis.