DNAJC12 and dopa-responsive nonprogressive parkinsonism

Letizia Straniero, Ilaria Guella, Roberto Cilia, Laura Parkkinen, Valeria Rimoldi, Alexander Young, Rosanna Asselta, Giulia Soldà, Vesna Sossi, A Jon Stoessl, Alberto Priori, Kenya Nishioka, Nobutaka Hattori, Jordan Follett, Alex Rajput, Nenad Blau, Gianni Pezzoli, Matthew J Farrer, Stefano Goldwurm, Ali H RajputStefano Duga

Research output: Contribution to journalArticle


Biallelic DNAJC12 mutations were described in children with hyperphenylalaninemia, neurodevelopmental delay, and dystonia. We identified DNAJC12 homozygous null variants (c.187A>T;p.K63* and c.79-2A>G;p.V27Wfs*14) in two kindreds with early-onset parkinsonism. Both probands had mild intellectual disability, mild nonprogressive, motor symptoms, sustained benefit from small dose of levodopa, and substantial worsening of symptoms after levodopa discontinuation. Neuropathology (Proband-A) revealed no alpha-synuclein pathology, and substantia nigra depigmentation with moderate cell loss. DNAJC12 transcripts were reduced in both patients. Our results suggest that DNAJC12 mutations (absent in 500 early-onset patients with Parkinson's disease) rarely cause dopa-responsive nonprogressive parkinsonism in adulthood, but broaden the clinical spectrum of DNAJC12 deficiency. Ann Neurol 2017;82:640-646.

Original languageEnglish
Pages (from-to)640-646
Number of pages7
JournalAnnals of Neurology
Issue number4
Publication statusPublished - Oct 2017


  • Adult
  • Amyloid beta-Peptides
  • Antiparkinson Agents
  • Biogenic Amines
  • Brain
  • DNA Mutational Analysis
  • DNA-Binding Proteins
  • Family Health
  • Female
  • Humans
  • Levodopa
  • Male
  • Middle Aged
  • Mutation
  • Parkinsonian Disorders
  • Phenylalanine
  • Repressor Proteins
  • Sequestosome-1 Protein
  • Young Adult
  • alpha-Synuclein
  • tau Proteins
  • Journal Article

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  • Cite this

    Straniero, L., Guella, I., Cilia, R., Parkkinen, L., Rimoldi, V., Young, A., Asselta, R., Soldà, G., Sossi, V., Stoessl, A. J., Priori, A., Nishioka, K., Hattori, N., Follett, J., Rajput, A., Blau, N., Pezzoli, G., Farrer, M. J., Goldwurm, S., ... Duga, S. (2017). DNAJC12 and dopa-responsive nonprogressive parkinsonism. Annals of Neurology, 82(4), 640-646. https://doi.org/10.1002/ana.25048