Publication date: Available online 29 April 2017
Author(s): B. Dufournet, K. Nguyen, P. Charles, D. Grabli, A. Jacquette, M. Borg, T. Danaila, E. Mutez, S. Drapier, O. Colin, A. Eusebio, N. Philip, J.P. Azulay
BackgroundWhile it is known that 22q11.2 microdeletions (22q11.2-del) increase the risk of Parkinson's disease (PD), the characteristics of PD associated with 22q11.2-del have not been specifically explored.ObjectiveThis report aimed to assess the clinical characteristics and treatment responses of PD patients with 22q11.2-del, and to describe any features that might lead neurologists to investigate the comorbidity.MethodsNine PD patients (eight men, one woman) with 22q11.2-del were followed at seven centers of the French PD Expert Network (Ns-Park).ResultsPD diagnosis was made before 22q11.2-del diagnosis in seven cases; their main characteristics were early onset (32–48 years) and good initial levodopa sensitivity, but with a course characterized by severe and early-onset levodopa-induced motor complications and psychiatric manifestations. Three patients received deep brain stimulation (DBS) that was effective.ConclusionSearching for 22q11.2-del in PD patients presenting with suggestive features is relevant as the clinical presentation is similar to idiopathic PD, but with other associated characteristics, including a severe evolution. Results with DBS are similar to those reported for idiopathic PD.