New Haven, Connecticut 06520


The scientific aim of this study is to investigate the efficacy and safety of incobotulinumtoxinA (Xeomin-Merz Pharmaceuticals) in the tremor of Parkinson‟s disease. Our hypothesis is that injection of Xeomin into the muscles of arm, forearm and hand decreases the tremor amplitude and frequency leading to improvement of the patient‟s function.

Study summary:

This is an investigator initiated, randomized, double blind, placebo controlled, cross over study which is supported by Merz pharmaceuticals. Patients with Parkinson‟s disease (at Yale Neurology and Movement disorders clinics) will be approached by the members of the research team (PI and sub-investigators) to see if they meet inclusion and exclusion criteria and wish to participate in the study. If eligible and consented to participate in the study, there will be a series of questionaires, examinations and treatment sessions.


Inclusion Criteria. 1. Age more than 18 years 2. Both sexes 3. all races/ethnic groups. 4. Meeting the clinical diagnosis of Parkinson's disease with presence of moderate to severe Parkinson tremor that is refractory to standard medical treatments and which limits the patient‟s functionality and/or poses significant discomfort. 5. Subjects who are able to read, speak, and understand English. Exclusion Criteria. 1. Existing significant acute medical condition (i.e. cardiovascular, endocrine, hematologic, neoplastic, infectious, or autoimmune disorders) or significant swallowing or breathing difficulties. 2. Pregnancy or planned pregnancy (determined by urine pregnancy test). 3. Active breast feeding. 4. Enrollment in any clinical trial (currently or within the past 3 months) in which treatments are imposed by a protocol. 5. Any subject for whom botulinum toxin treatment would be contraindicated; known allergy or sensitivity to medication. 6. Subjects who are younger than 18 years of age. Neuromuscular-junction disorders. 7. Evidence of acute pathology in neuro-imaging. 8. Axis I diagnosis determined by a neurologist or psychiatrist. 9. Use of Anesthetic medications within two weeks and corticosteroid injections within 4 weeks of enrollment. 10. Those who received botulinum toxin injections in the past 4 months.



Primary Contact:

Principal Investigator
Bahman Jabbari, MD
Yale University

Diana Richardson, MD

Backup Contact:

Rezvan Rostami

Location Contact:

New Haven, Connecticut 06520
United States

Rezvan Rostami
Phone: 716-998-2256

Site Status: Recruiting

Data Source:

Date Processed: January 21, 2020

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