PMID- 27196560 OWN - NLM STAT- MEDLINE DCOM- 20170718 LR - 20221207 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 11 IP - 5 DP - 2016 TI - Genetic Analysis of PLA2G6 in 22 Indian Families with Infantile Neuroaxonal Dystrophy, Atypical Late-Onset Neuroaxonal Dystrophy and Dystonia Parkinsonism Complex. PG - e0155605 LID - 10.1371/journal.pone.0155605 [doi] LID - e0155605 AB - Mutations in PLA2G6 were identified in patients with a spectrum of neurodegenerative conditions, such as infantile neuroaxonal dystrophy (INAD), atypical late-onset neuroaxonal dystrophy (ANAD) and dystonia parkinsonism complex (DPC). However, there is no report on the genetic analysis of families with members affected with INAD, ANAD and DPC from India. Therefore, the main aim of this study was to perform genetic analysis of 22 Indian families with INAD, ANAD and DPC. DNA sequence analysis of the entire coding region of PLA2G6 identified 13 different mutations, including five novel ones (p.Leu224Pro, p.Asp283Asn, p.Arg329Cys, p.Leu491Phe, and p.Arg649His), in 12/22 (54.55%) families with INAD and ANAD. Interestingly, one patient with INAD was homozygous for two different mutations, p.Leu491Phe and p.Ala516Val, and thus harboured four mutant alleles. With these mutations, the total number of mutations in this gene reaches 129. The absence of mutations in 10/22 (45.45%) families suggests that the mutations could be in deep intronic or promoter regions of this gene or these families could have mutations in a yet to be identified gene. The present study increases the mutation landscape of PLA2G6. The present finding will be useful for genetic diagnosis, carrier detection and genetic counselling to families included in this study and other families with similar disease condition. FAU - Kapoor, Saketh AU - Kapoor S AD - Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science, Bangalore, 560012, India. FAU - Shah, Mohd Hussain AU - Shah MH AD - Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science, Bangalore, 560012, India. FAU - Singh, Nivedita AU - Singh N AD - Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science, Bangalore, 560012, India. FAU - Rather, Mohammad Iqbal AU - Rather MI AD - Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science, Bangalore, 560012, India. FAU - Bhat, Vishwanath AU - Bhat V AD - Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science, Bangalore, 560012, India. FAU - Gopinath, Sindhura AU - Gopinath S AD - Department of Biotechnology, R.V. College of Engineering, Bangalore, 560059, India. FAU - Bindu, Parayil Sankaran AU - Bindu PS AD - Department of Neurology, National Institute of Mental Health and Neuro Sciences, Bangalore, 560029, India. FAU - Taly, Arun B AU - Taly AB AD - Department of Neurology, National Institute of Mental Health and Neuro Sciences, Bangalore, 560029, India. FAU - Sinha, Sanjib AU - Sinha S AD - Department of Neurology, National Institute of Mental Health and Neuro Sciences, Bangalore, 560029, India. FAU - Nagappa, Madhu AU - Nagappa M AD - Department of Neurology, National Institute of Mental Health and Neuro Sciences, Bangalore, 560029, India. FAU - Bharath, Rose Dawn AU - Bharath RD AD - Department of Neuroimaging and Interventional Radiology, National Institute of Mental Health and Neuro Sciences, Bangalore, 560029, India. FAU - Mahadevan, Anita AU - Mahadevan A AD - Department of Neuropathology, National Institute of Mental Health and Neuro Sciences, Bangalore, 560029, India. FAU - Narayanappa, Gayathri AU - Narayanappa G AD - Department of Neuropathology, National Institute of Mental Health and Neuro Sciences, Bangalore, 560029, India. FAU - Chickabasaviah, Yasha T AU - Chickabasaviah YT AD - Department of Neuropathology, National Institute of Mental Health and Neuro Sciences, Bangalore, 560029, India. FAU - Kumar, Arun AU - Kumar A AD - Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science, Bangalore, 560012, India. LA - eng PT - Journal Article DEP - 20160519 PL - United States TA - PLoS One JT - PloS one JID - 101285081 RN - EC 3.1.1.4 (Group VI Phospholipases A2) RN - EC 3.1.1.4 (PLA2G6 protein, human) RN - NBIA2B SB - IM MH - Alleles MH - Asian People/genetics MH - Dystonia/*genetics MH - Dystonic Disorders/genetics MH - Exons MH - Family Health MH - Female MH - Genetic Predisposition to Disease MH - Genetic Testing MH - Group VI Phospholipases A2/*genetics MH - Homozygote MH - Humans MH - India MH - Iron Metabolism Disorders/*genetics MH - Magnetic Resonance Imaging MH - Male MH - Mutation MH - Neuroaxonal Dystrophies/*genetics MH - Neurodegenerative Diseases/genetics MH - Parkinsonian Disorders/*genetics PMC - PMC4873246 COIS- Competing Interests: The authors have declared that no competing interests exist. EDAT- 2016/05/20 06:00 MHDA- 2017/07/19 06:00 PMCR- 2016/05/19 CRDT- 2016/05/20 06:00 PHST- 2015/10/29 00:00 [received] PHST- 2016/05/02 00:00 [accepted] PHST- 2016/05/20 06:00 [entrez] PHST- 2016/05/20 06:00 [pubmed] PHST- 2017/07/19 06:00 [medline] PHST- 2016/05/19 00:00 [pmc-release] AID - PONE-D-15-47203 [pii] AID - 10.1371/journal.pone.0155605 [doi] PST - epublish SO - PLoS One. 2016 May 19;11(5):e0155605. doi: 10.1371/journal.pone.0155605. eCollection 2016.