Unraveling the role of GBA1 genotype in axial signs response to subthalamic deep brain stimulation
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Updated: Jul 15, 2026

Controlling Parkinson's Disease With Adaptive Deep Brain Stimulation
Published on: July 16, 2014
Francesco Bove1,2, Danilo Genovese3,4, Alessandro De Biase1,2
1Neurology Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy.
Abstract:
GBA1 variants represent the most common genetic risk factor for Parkinson's disease (PD) and are associated with higher risk of developing cognitive decline and axial motor impairment. While cognitive outcomes following subthalamic deep brain stimulation (STN-DBS) have recently received growing attention, axial signs progression remains poorly defined in this population. In this retrospective multicentric study, we analyzed a cohort of 353 PD patients who underwent bilateral STN-DBS surgery (75 GBA+ and 253 GBA-). 5-year follow-up data were available for 233 patients, including 43 mutated subjects. Lower off-medication UPDRS III score and levodopa responsiveness at baseline were identified as independent predictors of axial signs worsening after DBS, while GBA1 genotype was not identified as risk factor. The presence of GBA1 variants did not exert a detrimental effect on axial signs in PD patients up to five years following STN-DBS, supporting its consideration as a valid therapeutic option in this genetic subgroup.
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