To Assess the Efficacy and Safety of Ceftriaxone in Patients With Mild to Moderate Parkinson's Disease Dementia

Parkinson's disease (PD) is a common neurodegenerative disorder that can cause significant disability and decrease quality of life. It is a chronic and progressive disease which means the symptoms become worse over time.

Parkinson's disease dementia (PDD) is a decline in thinking and reasoning that develops in many people living with PD at least a year after diagnosis. An estimated 50 to 80 percent of patients with PD eventually experience dementia as the disease progresses. Ceftriaxone is a kind of antibiotics, which has been marketed in many countries. This is the first time for ceftraxone treatment on PDD patient. The primary objective of this Phase II study is to evaluate the improvement of cognitive function in PDD patients with ceftriaxone administration.

This study will enroll approximately 106 patients, and conduct in multiple hospitals in Taiwan. Recruitment number of each site will be adjusted according to its enrollment status under the competitive enrollment model. Subjects will receive either ceftriaxone or placebo in a 1:1 ratio. One of the subjects' main caregiver should be involved to get the information of function of daily life and help to complete scale evaluation.

The study lasts about 33 weeks, during which eligible patients will be given 1 g/day/dose of ceftriaxone or placebo via injection 3 doses every cycle (2 weekly cycle), for a total of 16 cycles. And the subjects can choose to get injection either in the clinical site or in their house.