Abstract Details

Title Clinical Benefit of Transcutaneous Afferent Patterned Stimulation in Essential Tremor Patients with High Unmet Need

Topic Movement Disorders

Presentation(s) P3 - Poster Session 3 (5:30 PM-6:30 PM)

Poster/Presentation
Number 3-010

Objective

This analysis established clinically assessable criteria to identify a high unmet need essential tremor (ET) subgroup and an early responder cohort, and evaluated the response to transcutaneous afferent patterned stimulation (TAPS) in ET patients with high unmet need and early responders.

Background

TAPS is a non-invasive neuromodulation therapy that improves hand tremor in patients with ET. While prior research demonstrated the safety and efficacy of TAPS, not all patients experience tremor reduction. This analysis can assist healthcare providers in identifying patients who will benefit from TAPS.

Design/Methods

Literature was surveyed for TAPS studies to assess the clinical response in the high unmet need subgroup (high tremor severity, non-responsive to tremor medication, age≥65 years) and an early responder cohort (substantial TAPS tremor improvement and usage in the first month). Secondary analyses were performed for these patients using previously collected Tremor Research Group Essential Tremor Rating Scale (TETRAS) scores, Bain & Findley activities of daily living (BF-ADL) scores, and measures of tremor power.

Results

Three studies from literature collected the required data and were included in this analysis [Pahwa 2019, Isaacson 2020, Lu 2023]. Significant differences in BF-ADL and TETRAS improvement were observed with TAPS over sham for the high unmet need subgroup in a randomized controlled study (N=47, p<0.03). During a 3-month open-label study, the high unmet need subgroup (N=138) and early responder cohort (N=51) showed significant improvements in BF-ADL, TETRAS, and tremor power (p<0.001). Secondary analysis of previously published real-world evidence demonstrated that early responders maintained consistent effectiveness and usage at 3 months (N=191, p<0.001) and 12 months (N=76, p<0.001).

Conclusions

TAPS showed comparable improvements in ET with high unmet need as reported in the original studies, and greater efficacy in early responders. These findings could inform patient selection and the trial process for identifying TAPS therapy responders.

Authors/Disclosures
Alexander Kent, PhD (Cala Health) PRESENTER	Dr. Kent has received personal compensation for serving as an employee of Cala Health. Dr. Kent has stock in Cala Health. Dr. Kent has received intellectual property interests from a discovery or technology relating to health care. Dr. Kent has received intellectual property interests from a discovery or technology relating to health care.
Rajesh Pahwa, MD, FAAN (University of Kansas Medical Center)	Dr. Pahwa has received personal compensation in the range of $5,000-$9,999 for serving as a Consultant for Abbott. Dr. Pahwa has received personal compensation in the range of $10,000-$49,999 for serving as a Consultant for AbbVie. Dr. Pahwa has received personal compensation in the range of $5,000-$9,999 for serving as a Consultant for ACADIA. Dr. Pahwa has received personal compensation in the range of $10,000-$49,999 for serving as a Consultant for Amneal. Dr. Pahwa has received personal compensation in the range of $5,000-$9,999 for serving as a Consultant for Lundbeck. Dr. Pahwa has received personal compensation in the range of $10,000-$49,999 for serving as a Consultant for Supernus. Dr. Pahwa has received personal compensation in the range of $10,000-$49,999 for serving as a Consultant for Insightec. Dr. Pahwa has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Jaaz. Dr. Pahwa has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Fasikl. Dr. Pahwa has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Genetech. Dr. Pahwa has received personal compensation in the range of $5,000-$9,999 for serving as a Consultant for Merz. Dr. Pahwa has received personal compensation in the range of $10,000-$49,999 for serving as a Consultant for Mitsubishi Tanabe. Dr. Pahwa has received personal compensation in the range of $10,000-$49,999 for serving as a Consultant for Photopharmics. The institution of Dr. Pahwa has received research support from Abbott. The institution of Dr. Pahwa has received research support from Abbvie. The institution of Dr. Pahwa has received research support from Biogen. The institution of Dr. Pahwa has received research support from Parkinson Foundation. The institution of Dr. Pahwa has received research support from Roche. The institution of Dr. Pahwa has received research support from Sage. The institution of Dr. Pahwa has received research support from Sun Pharma. The institution of Dr. Pahwa has received research support from Theravance. The institution of Dr. Pahwa has received research support from Neuroderm. The institution of Dr. Pahwa has received research support from Ask Bio. The institution of Dr. Pahwa has received research support from Blue Rock. The institution of Dr. Pahwa has received research support from Cerevance. The institution of Dr. Pahwa has received research support from Fasikl. The institution of Dr. Pahwa has received research support from Scion. The institution of Dr. Pahwa has received research support from UCB. The institution of Dr. Pahwa has received research support from Ono. The institution of Dr. Pahwa has received research support from Intra-cellular Therapies. The institution of Dr. Pahwa has received research support from Ask Bio. The institution of Dr. Pahwa has received research support from Michael J Fox Foundation . The institution of Dr. Pahwa has received research support from Neuron 23. The institution of Dr. Pahwa has received research support from Roche.
Stuart H. Isaacson, MD, FAAN (Parkinson's Dis & Mov Dis Ctr of Boca Raton)	The institution of Dr. Isaacson has received personal compensation in the range of $10,000-$49,999 for serving as a Consultant for Acadia. The institution of Dr. Isaacson has received personal compensation in the range of $10,000-$49,999 for serving as a Consultant for Sunovion. The institution of Dr. Isaacson has received personal compensation in the range of $10,000-$49,999 for serving as a Consultant for acorda. The institution of Dr. Isaacson has received personal compensation in the range of $10,000-$49,999 for serving as a Consultant for Supernus. The institution of Dr. Isaacson has received personal compensation in the range of $10,000-$49,999 for serving as a Consultant for Neurocrine. The institution of Dr. Isaacson has received personal compensation in the range of $10,000-$49,999 for serving as a Consultant for Kyowa. The institution of Dr. Isaacson has received personal compensation in the range of $10,000-$49,999 for serving as a Consultant for adamas. The institution of Dr. Isaacson has received personal compensation in the range of $10,000-$49,999 for serving as a Consultant for Lundbeck. The institution of Dr. Isaacson has received personal compensation in the range of $10,000-$49,999 for serving as a Consultant for Teva. The institution of Dr. Isaacson has received personal compensation in the range of $10,000-$49,999 for serving as a Consultant for Neuroderm. The institution of Dr. Isaacson has received personal compensation in the range of $10,000-$49,999 for serving as a Consultant for Abbvie. The institution of Dr. Isaacson has received personal compensation in the range of $10,000-$49,999 for serving as a Consultant for amneal. Dr. Isaacson has received personal compensation in the range of $10,000-$49,999 for serving on a Speakers Bureau for Teva. Dr. Isaacson has received personal compensation in the range of $10,000-$49,999 for serving on a Speakers Bureau for Neurocrine. Dr. Isaacson has received personal compensation in the range of $10,000-$49,999 for serving on a Speakers Bureau for adamas. Dr. Isaacson has received personal compensation in the range of $10,000-$49,999 for serving on a Speakers Bureau for Lundbeck. Dr. Isaacson has received personal compensation in the range of $10,000-$49,999 for serving on a Speakers Bureau for Supernus. Dr. Isaacson has received personal compensation in the range of $10,000-$49,999 for serving on a Speakers Bureau for Acadia. Dr. Isaacson has received personal compensation in the range of $10,000-$49,999 for serving on a Speakers Bureau for Acorda. Dr. Isaacson has received personal compensation in the range of $10,000-$49,999 for serving on a Speakers Bureau for Amneal. Dr. Isaacson has received personal compensation in the range of $10,000-$49,999 for serving on a Speakers Bureau for Abbvie.
Salima Brillman, MD	The institution of Dr. Brillman has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Cala Health. The institution of Dr. Brillman has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Acorda. The institution of Dr. Brillman has received personal compensation in the range of $5,000-$9,999 for serving as a Consultant for Amneal. The institution of Dr. Brillman has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Acadia. The institution of Dr. Brillman has received personal compensation in the range of $500-$4,999 for serving as a Consultant for USWorldMeds. Dr. Brillman has received personal compensation in the range of $500-$4,999 for serving on a Speakers Bureau for Abbvie. Dr. Brillman has received personal compensation in the range of $5,000-$9,999 for serving on a Speakers Bureau for Acorda. Dr. Brillman has received personal compensation in the range of $5,000-$9,999 for serving on a Speakers Bureau for Amneal. Dr. Brillman has received personal compensation in the range of $500-$4,999 for serving on a Speakers Bureau for Acadia. Dr. Brillman has received personal compensation in the range of $5,000-$9,999 for serving on a Speakers Bureau for Adamas. Dr. Brillman has received personal compensation in the range of $5,000-$9,999 for serving on a Speakers Bureau for USWorld Meds. Dr. Brillman has received personal compensation in the range of $500-$4,999 for serving on a Speakers Bureau for Teva.
Chiahao Lu, PhD	Dr. Lu has received personal compensation for serving as an employee of Cala health.

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