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utation in the ACAD9 gene. The case adds to the clinical heterogeneity of ACAD9 deficiency and confirms the importance of assembly factors in causing complex I deficiency.

Session Information: P03.017, Child Neurology II

Presentation Time: Tuesday, March 19, 2:00 pm:30 pm

Digitized Spiral Drawing Analysis Discriminates Parkinson Disease from Control

Authors: Marta San Luciano, Cuiling Wang, Qiping Yu, Sarah Boschung, Kaili Stanley, Susan Bressman, Richard Lipton, Seth Pullman, Rachel Saunders-Pullman

Background/Significance: This study examined the discriminative value of digitized spiral analysis in distinguishing Parkinson's disease (PD) from controls. Spiral analysis is a non-invasive clinical test that objectively characterizes kinematic and physiologic features using calculated indices derived from hand-drawn spiral shape and motor execution. While it correlates with Unified Parkinson's Disease Rating Scale motor scores in PD, and may be more sensitive in detecting early changes in motor performance, its ability to discriminate PD from controls has not been established. The researchers concluded that spiral analysis accurately discriminates PD and early PD from controls and may be useful as a biomarker. Further assessment is needed to determine its discriminatory abilities in differentiating tremor disorders such as essential tremor from PD.

Session Information: P04.191, Evaluation of Parkinson's Disease

Presentation Time: Wednesday, March 20, 7:30 am:00pm

Classic Parkinson's Disease and Lewy Body Pathology Associated with a Heterozygous PARKIN Dosage Mutation

Authors: Madeleine Sharp, Karen Marder, Lucien Cote, Lorraine Clark, Jean Paul Vonsattel, Roy Alcalay

Background/Significance: The objective of this study was to describe the clinical and pathological data of a PARKIN heterozygote mutation carrier with early-onset Parkinson's disease (PD). Only a single autops

Contact: Karin Eskenazi
Columbia University Medical Center

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