PARKIN, PINK1, and DJ1 analysis in early-onset Parkinson’s disease in Ireland

Diana A. Olszewska, Allan McCarthy, Alexandra I. Soto-Beasley, Ronald L. Walton, Owen A. Ross, Tim Lynch

Research output: Contribution to journalArticlepeer-review


Background: Variants in PARKIN, PINK1, and DJ1 are associated with early-onset Parkinson’ disease (EOPD, age-at-onset < 45). We previously reported a single PINK1 and a single DJ1 heterozygous variant carrier. Purpose: We aimed to expand upon our previous EOPD studies and investigate for any genotype–phenotype correlations in Irish PD. Methods: Three hundred fourteen PD patients were recruited from Dublin Neurological Institute, Ireland. Genetic analysis was performed at the Mayo Clinic, Jacksonville, USA. We screened 81 patients with young-onset PD (age-at-onset < 50), of which 58 had EOPD. Results: We identified 4 patients with homozygous/compound heterozygous variants and 3 heterozygote carriers (pathogenic PINK1/DJ1 variants were not found). Expansion of one of the pedigrees showed a novel variant in exon 9, in a symptomatic patient. We identified 6.89% PARKIN variant carriers associated with EOPD. Conclusion: These findings suggest that PINK1 and DJ1 are rarely associated with Irish YOPD, while PARKIN variant frequency is similar to that reported worldwide.

Original languageEnglish (US)
JournalIrish Journal of Medical Science
StateAccepted/In press - 2021


  • DJ1
  • EOPD
  • Ireland
  • PINK1
  • Parkin
  • Parkinson’s disease

ASJC Scopus subject areas

  • Medicine(all)


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