Parkinson's Disease Trial, Recruiting
Who may be able to join
AI generated eligibility summary. Written by an AI model from the official source data and checked on a sample basis. It can contain mistakes, so confirm anything important against the original source. How we use AI
Who might be able to join this trial:
For patients with idiopathic olfactory dysfunction (unexplained loss of smell):
- People between 55 and 75 years of age
- People whose loss of smell has been progressing slowly and steadily, without episodes of getting better or worse
- People who are able to give informed consent and can cooperate with the study, as assessed by the lead researcher
For healthy control participants:
- People between 55 and 75 years of age
- People who are able to give informed consent
- People who are able to cooperate with the study, as assessed by the lead researcher
Who may not be able to join:
For patients with idiopathic olfactory dysfunction (unexplained loss of smell):
- People who have been diagnosed with a brain or nerve-related disease, or a major mental health condition
- People whose loss of smell is caused by nose or sinus problems (such as chronic nasal inflammation or allergies), a head injury, an infection, a condition present from birth, surgery, or medications or toxic substances
- People whose loss of smell improved when treated with steroid medications (if these were tried)
- People with severe abnormalities or infections inside the nasal cavity
- People showing clear signs of dementia or Parkinson's disease
- People currently misusing alcohol or drugs
- People with a terminal illness
For healthy control participants:
- People who show signs of smell problems on a clinical test
- People showing clear signs of dementia or Parkinson's disease
- People with severe abnormalities or infections inside the nasal cavity
- People currently misusing alcohol or drugs
- People who have been diagnosed with a brain or nerve-related disease, or a major mental health condition
Important: Always verify eligibility with the trial site directly before applying.
Based on publicly available eligibility criteria from ClinicalTrials.gov. Verify directly with the trial site before acting. This is not medical advice.
Contact this trial
Principal Investigator: Kristian S Frederiksen, Danish Dementia Research Centre, Rigshospitalet, Capital Region
Phone: +4535458759
Contact details sourced from ClinicalTrials.gov. Verify directly with the trial site before attending.
GP referral letter
Print a one-page summary to share with your doctor.
Trial details
Where this trial is recruiting
Primary endpoints
Real-time quaking-induced conversion (RT-QuIC) positive for alpha-synuclein (aSyn); Diagnosis of Parkinson's disease (PD) or dementia
Can't join this trial?
Data last synced from ClinicalTrials.gov: 28 July 2026. Trial status can change. Always verify current status directly with the trial site before making any decision.