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Abstract Details

Minimal Clinically Important Difference in AIMS Score Based on Clinical and Patient Global Impression of Change in Patients With Tardive Dyskinesia Treated With Deutetrabenazine
Movement Disorders
P6 - Poster Session 6 (12:00 PM-1:00 PM)
3-001

To assess the Minimal Clinically Important Difference (MCID) in Abnormal Involuntary Movement Scale (AIMS) score in patients with tardive dyskinesia (TD) treated with deutetrabenazine.
Deutetrabenazine is FDA approved for TD based on two 12-week, randomized, double-blind, placebo-controlled studies evaluating safety and efficacy in patients with baseline AIMS score ≥6. Deutetrabenazine reduced overall AIMS scores compared with placebo in ARM-TD (–3.0 vs –1.6, P=0.019) and AIM-TD (24 mg/day, –3.2 vs –1.4, P=0.003; 36 mg/day, –3.3 vs –1.4, P=0.001).
MCID is the smallest change from baseline in AIMS score that is meaningful for patients. MCID analyses were performed based on Patient Global Impression of Change (PGIC) and Clinical Global Impression of Change (CGIC) as anchors as described by Hauser et al., where MCID is the difference between patients treated with deutetrabenazine who were minimally improved and patients treated with placebo who were unchanged. Additional MCID definitions were explored: difference between patients who demonstrated treatment improvement versus those who did not (Method 2); difference between patients who demonstrated treatment success versus those who did not (Method 3).
295 patients were analyzed. Based on PGIC, the suggested MCID was –2.8. Results were similar for Method 2 (75% of patients had treatment improvement; MCID=–2.8) and Method 3 (38% of patients had treatment success; MCID=–2.6). Based on CGIC, the suggested MCID was –2.6. Results were similar for Method 2 (76% of patients had treatment improvement; MCID=–2.8) and Method 3 (41% of patients had treatment success; MCID=–3.0). Therefore, the suggested MCID for deutetrabenazine is –3. 

The MCID change in AIMS score based on PGIC and CGIC for deutetrabenazine was –3 regardless of the analytical method applied, suggesting that patients who experience an AIMS score reduction of ~3 could expect to experience clinically meaningful improvement in TD symptoms.

Authors/Disclosures

PRESENTER 		No disclosure on file
Amanda Wilhelm Amanda Wilhelm has received personal compensation for serving as an employee of Teva Pharmaceuticals.
Maria Wieman, MPH No disclosure on file
Mark F. Gordon, MD, FÂ鶹´«Ã½Ó³»­ (Teva Pharmaceuticals) Dr. Gordon has received personal compensation for serving as an employee of Teva. Dr. Gordon has stock in Teva.
Robert A. Hauser, MD, MBA, FÂ鶹´«Ã½Ó³»­ (Movement Disorders Center) Dr. Hauser has received personal compensation in the range of $50,000-$99,999 for serving as a Consultant for Supernus. Dr. Hauser has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Stoparkinson. Dr. Hauser has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Revance. Dr. Hauser has received personal compensation in the range of $100,000-$499,999 for serving as a Consultant for Abbvie. Dr. Hauser has received personal compensation in the range of $5,000-$9,999 for serving as a Consultant for Neurocrine. Dr. Hauser has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Mitsubishi Tanabe. Dr. Hauser has received personal compensation in the range of $10,000-$49,999 for serving as a Consultant for Amneal. Dr. Hauser has received personal compensation in the range of $10,000-$49,999 for serving as a Consultant for Intrance. Dr. Hauser has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Zambon. Dr. Hauser has received personal compensation in the range of $5,000-$9,999 for serving as a Consultant for NanoPharmasolutions. Dr. Hauser has received personal compensation in the range of $500-$4,999 for serving as a Consultant for HanAll BioPharma. Dr. Hauser has received personal compensation in the range of $50,000-$99,999 for serving as a Consultant for Cerevance. Dr. Hauser has received personal compensation in the range of $5,000-$9,999 for serving as a Consultant for Biogen. Dr. Hauser has received personal compensation in the range of $10,000-$49,999 for serving as a Consultant for Clario. Dr. Hauser has received personal compensation in the range of $500-$4,999 for serving as a Consultant for UCB. Dr. Hauser has received personal compensation in the range of $5,000-$9,999 for serving as a Consultant for ABLi Therapeutics. Dr. Hauser has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Sumitomo. Dr. Hauser has received personal compensation in the range of $10,000-$49,999 for serving as a Consultant for Taurus Therapeutics. Dr. Hauser has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Sorriddi Therapeutics. Dr. Hauser has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Contera. Dr. Hauser has received personal compensation in the range of $5,000-$9,999 for serving as a Consultant for Lundbeck. Dr. Hauser has received personal compensation in the range of $10,000-$49,999 for serving as a Consultant for Alterity Therapeutics. Dr. Hauser has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Convatec Inc. Dr. Hauser has received personal compensation in the range of $10,000-$49,999 for serving as a Consultant for Knight Therapeutics. Dr. Hauser has received personal compensation in the range of $10,000-$49,999 for serving as a Consultant for Acadia. Dr. Hauser has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Biorasi. Dr. Hauser has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Medicure Pharma. Dr. Hauser has received personal compensation in the range of $5,000-$9,999 for serving as a Consultant for BlueRock. Dr. Hauser has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Inhibikase. The institution of Dr. Hauser has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Stoparkinson. The institution of Dr. Hauser has received personal compensation in the range of $0-$499 for serving on a Scientific Advisory or Data Safety Monitoring board for Photopharmics. The institution of Dr. Hauser has received personal compensation in the range of $5,000-$9,999 for serving on a Scientific Advisory or Data Safety Monitoring board for ABLi Therapeutics. Dr. Hauser has received personal compensation in the range of $10,000-$49,999 for serving on a Speakers Bureau for Amneal . Dr. Hauser has received personal compensation in the range of $5,000-$9,999 for serving on a Speakers Bureau for Neurocrine Biosciences. Dr. Hauser has received personal compensation in the range of $100,000-$499,999 for serving on a Speakers Bureau for Supernus. Dr. Hauser has received personal compensation in the range of $10,000-$49,999 for serving on a Speakers Bureau for Abbvie. Dr. Hauser has or had stock in Inhibikase.Dr. Hauser has or had stock in Axial Therapeutics.Dr. Hauser has or had stock in Enterin.Dr. Hauser has or had stock in Photopharmics. The institution of Dr. Hauser has received research support from Annovis Bio, Inc.. The institution of Dr. Hauser has received research support from Inhibikase Therapeutics. The institution of Dr. Hauser has received research support from AbbVie, Inc.. The institution of Dr. Hauser has received research support from Biogen MA. The institution of Dr. Hauser has received research support from Cavion, Inc.. The institution of Dr. Hauser has received research support from Cerevance Beta, Inc.. The institution of Dr. Hauser has received research support from Cerevel Therapeutics. The institution of Dr. Hauser has received research support from Enterin, Inc.. The institution of Dr. Hauser has received research support from Genentech. The institution of Dr. Hauser has received research support from Global Kinetics Corporation. The institution of Dr. Hauser has received research support from Hoffman-La Roche Inc. The institution of Dr. Hauser has received research support from Michael J. Fox Foundation for Parkinson's Research. The institution of Dr. Hauser has received research support from National Parkinson's Foundation. The institution of Dr. Hauser has received research support from Neuroderm. The institution of Dr. Hauser has received research support from Sage Therapeutics. The institution of Dr. Hauser has received research support from Scion NeuroStim. The institution of Dr. Hauser has received research support from UCB BioPharma. The institution of Dr. Hauser has received research support from UCB. The institution of Dr. Hauser has received research support from Amneal Pharmaceuticals. The institution of Dr. Hauser has received research support from Motric Bio, Inc.. The institution of Dr. Hauser has received research support from Sun Pharma Advanced Research Company. The institution of Dr. Hauser has received research support from Teva Branded Pharmaceuticals. The institution of Dr. Hauser has received research support from Truebinding, Inc.. The institution of Dr. Hauser has received research support from Jazz Pharmaceuticals. The institution of Dr. Hauser has received research support from Ipsen. Dr. Hauser has received intellectual property interests from a discovery or technology relating to health care.
Juha M. Savola, MD, PhD Dr. Savola has received personal compensation for serving as an employee of Teva Pharmaceuticals. Dr. Savola has received intellectual property interests from a discovery or technology relating to health care.