GLP1R and Parkinson disease: Other commercial companies are also evaluating their GLP-1 receptor agonists in Phase II trials for PD [these include the South Korean company Peptron’s PT320 (ClinicalTrials.gov, n.d. m)] and Novo Nordisk’s longer acting GLP-1 receptor agonist Semaglutide (ClinicalTrials.gov, n.d. h).