A variation in PANK2 gene is causing Pantothenate kinase-associated Neurodegeneration in a family from Jammu and Kashmir - India

Sci Rep. 2017 Jul 5;7(1):4834. doi: 10.1038/s41598-017-05388-9.

Abstract

Pantothenate kinase-associated neurodegeneration is a rare hereditary neurodegenerative disorder associated with nucleotide variation(s) in mitochondrial human Pantothenate kinase 2 (hPanK2) protein encoding PANK2 gene, and is characterized by symptoms of extra-pyramidal dysfunction and accumulation of non-heme iron predominantly in the basal ganglia of the brain. In this study, we describe a familial case of PKAN from the State of Jammu and Kashmir (J&K), India based on the clinical findings and genetic screening of two affected siblings born to consanguineous normal parents. The patients present with early-onset, progressive extrapyramidal dysfunction, and brain Magnetic Resonance imaging (MRI) suggestive of symmetrical iron deposition in the globus pallidi. Screening the PANK2 gene in the patients as well as their unaffected family members revealed a functional single nucleotide variation, perfectly segregating in the patient's family in an autosomal recessive mode of inheritance. We also provide the results of in-silico analyses, predicting the functional consequence of the identified PANK2 variant.

MeSH terms

  • Adult
  • Age of Onset
  • Catalytic Domain
  • Computer Simulation
  • Consanguinity
  • Female
  • Genetic Predisposition to Disease
  • Humans
  • India
  • Magnetic Resonance Imaging
  • Male
  • Mutation, Missense*
  • Pantothenate Kinase-Associated Neurodegeneration / diagnostic imaging
  • Pantothenate Kinase-Associated Neurodegeneration / genetics*
  • Pedigree
  • Phosphotransferases (Alcohol Group Acceptor) / chemistry
  • Phosphotransferases (Alcohol Group Acceptor) / genetics*
  • Sequence Analysis, DNA / methods
  • Young Adult

Substances

  • Phosphotransferases (Alcohol Group Acceptor)
  • pantothenate kinase