Basal ganglia calcification and novel compound heterozygous mutations in the PANK2 gene in a Chinese boy with classic Pantothenate kinase-associated neurodegeneration: A case report

Medicine (Baltimore). 2018 Apr;97(15):e0316. doi: 10.1097/MD.0000000000010316.

Abstract

Rationale: Pantothenate kinase-associated neurodegeneration (PKAN) represents an autosomal recessive hereditary disease. In this report, a PANK2 gene mutation in a Chinese child was identified, as well as detections of PKAN among his family members. Our findings exposed a world-wide novel compound heterozygous mutation.

Patient concerns: We described a 6-year-old male patient with PKAN, exhibiting involuntary movement for a period of 1.5 years, as well as feeding difficulties for 2 weeks.

Diagnosis: Due to brain computed tomography and magnetic resonance imaging results, and patient behavior, the attending physician suspected a hereditary effect.

Interventions: The patient sample underwent high-throughput sequencing. Subsequently, his parents and sister were screened for the mutations identified in the patient genome.

Outcomes: High-throughput sequencing revealed a novel complex heterozygous mutation of the PANK2 gene, which was detected in the second and fourth exons, c.A650G, and c.T1341G, respectively, resulting in amino acid alterations (p.D217G and p.D447E, respectively). The child's father was confirmed to possess a heterozygous c.A650G mutation, while his mother was heterozygous for the c.T1341G mutation.

Lessons: The key finding of the study encompassed the detection of a novel PANK2 gene mutation in a child of Chinese ethnicity with PKAN. The PANK2 gene c.A650G, as well as c.T1341G, mutations may be potential mutation hotspots in children with PKAN in Mainland China.

Publication types

  • Case Reports

MeSH terms

  • Basal Ganglia Diseases / diagnosis
  • Basal Ganglia Diseases / ethnology
  • Basal Ganglia Diseases / genetics*
  • Calcinosis / diagnosis
  • Calcinosis / ethnology
  • Calcinosis / genetics*
  • Child
  • China
  • DNA Mutational Analysis*
  • Genetic Carrier Screening*
  • Genetic Testing
  • High-Throughput Nucleotide Sequencing
  • Humans
  • Magnetic Resonance Imaging
  • Male
  • Pantothenate Kinase-Associated Neurodegeneration / diagnosis
  • Pantothenate Kinase-Associated Neurodegeneration / genetics*
  • Phosphotransferases (Alcohol Group Acceptor) / genetics*
  • Tomography, X-Ray Computed

Substances

  • Phosphotransferases (Alcohol Group Acceptor)
  • pantothenate kinase

Supplementary concepts

  • Idiopathic basal ganglia calcification, childhood onset