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Abstract Details

Preliminary Assessment of the Phase 1/2 Clinical Trial Evaluating the Safety, Tolerability, Pharmacokinetics and Pharmacodynamics of AOC 1001 Administered Intravenously to Adult Patients with Myotonic Dystrophy Type 1 (DM1) (MARINA)
Neuromuscular and Clinical Neurophysiology (EMG)
S48 - Therapeutics for Muscle Disease (3:42 PM-3:54 PM)
002
The primary objective of the MARINA study is to evaluate the safety and tolerability of single and multiple ascending doses of AOC 1001 in adults with DM1.
DM1 is a rare, dominantly inherited, progressive neuromuscular disease caused by a toxic gain-of-function mutation in the DM1 protein kinase (DMPK) gene. Currently, no disease-modifying therapies exist.

AOC 1001 is an antibody oligonucleotide conjugate (AOC) comprised of a DMPK siRNA conjugated to a humanized antibody targeting human transferrin receptor 1 (TfR1), designed for functional delivery to muscle cells, where it can reduce the toxic DMPK-specific mRNA that is responsible for DM1 pathogenesis.
This phase 1/2 study (NCT05027269) is a randomized, placebo-controlled, double-blind trial conducted in two parts. Part A was a single dose design. Part B is a multiple-ascending dose design with 3 cohorts (dose levels), with quarterly doses and 1 booster after the first 6 weeks. The cohorts were initiated in a staggered fashion based on a safety data review of the preceding cohort(s). The primary objective is safety and tolerability. Secondary objectives include spliceopathy, pharmacokinetics, and pharmacodynamics (DMPK mRNA knockdown). Exploratory objectives include efficacy measures (myotonia, mobility, muscle strength, and muscle function), and patient-reported outcomes.

The study has enrolled 38 adults aged 18 to 65 years with a genetic diagnosis of DM1: eight in Part A and 30 in Part B. After completing MARINA, all patients may enroll in an open-label extension study and receive AOC 1001 for a 24-month treatment period. MARINA-OLE has commenced enrolling patients.
The MARINA study is currently ongoing. The preliminary analysis will include safety and tolerability, pharmacokinetics, pharmacodynamics, and the changes in RNA splicing from the initial cohorts. These results will be presented.

AOC 1001 represents a novel potential therapy addressing the underlying cause of DM1.
Authors/Disclosures
Nicholas E. Johnson, MD, FAAN (Virginia Commonwealth University)
PRESENTER 		Dr. Johnson has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Sarepta Therapuetics. Dr. Johnson has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Dyne Therapeutics. Dr. Johnson has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Vertex Pharma. Dr. Johnson has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Avidity. Dr. Johnson has received personal compensation in the range of $100,000-$499,999 for serving as a Consultant for Arthex. Dr. Johnson has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Juvena. Dr. Johnson has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Rgenta. Dr. Johnson has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Angle Therapeutics. Dr. Johnson has received personal compensation in the range of $500-$4,999 for serving as a Consultant for AskBio. Dr. Johnson has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Biogen. Dr. Johnson has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Argenx. Dr. Johnson has stock in Angle Therapeutics. Dr. Johnson has stock in Juvena Therapeutics. Dr. Johnson has stock in Myogene Therapies. The institution of Dr. Johnson has received research support from Novartis. The institution of Dr. Johnson has received research support from Takeda . The institution of Dr. Johnson has received research support from AMO Pharma. The institution of Dr. Johnson has received research support from Sarepta. The institution of Dr. Johnson has received research support from Dyne Therapeutics. The institution of Dr. Johnson has received research support from AskBio. The institution of Dr. Johnson has received research support from Pepgen. The institution of Dr. Johnson has received research support from ML Bio. The institution of Dr. Johnson has received research support from Vertex. The institution of Dr. Johnson has received research support from Arthex. The institution of Dr. Johnson has received research support from Avidity Biosciences. The institution of Dr. Johnson has received research support from Edgewise. Dr. Johnson has received intellectual property interests from a discovery or technology relating to health care.
John W. Day, MD, PhD (Stanford University School of Medicine) Dr. Day has received personal compensation in the range of $5,000-$9,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Novartis Gene Therapy. Dr. Day has received personal compensation in the range of $5,000-$9,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Biogen. Dr. Day has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Roche/Genentech. Dr. Day has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Sarepta. Dr. Day has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Avidity. Dr. Day has received personal compensation in the range of $10,000-$49,999 for serving on a Scientific Advisory or Data Safety Monitoring board for PepGen. Dr. Day has received personal compensation in the range of $10,000-$49,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Epirium Bio. Dr. Day has received personal compensation in the range of $5,000-$9,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Solid Biosciences. Dr. Day has received personal compensation in the range of $10,000-$49,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Muscular Dystrophy Association. The institution of Dr. Day has received research support from Astellas Pharma. The institution of Dr. Day has received research support from Novartis Gene Therapy. The institution of Dr. Day has received research support from Biogen. The institution of Dr. Day has received research support from Roche/Genentech. The institution of Dr. Day has received research support from Sanofi/Genzyme. The institution of Dr. Day has received research support from Sarepta. The institution of Dr. Day has received research support from Scholar Rock. The institution of Dr. Day has received research support from AMO Pharma. The institution of Dr. Day has received research support from AnnJi. Dr. Day has received research support from CureSMA. The institution of Dr. Day has received research support from Muscular Dystrophy Association. The institution of Dr. Day has received research support from Ionis Pharmaceuticals. The institution of Dr. Day has received research support from NMD Pharma. The institution of Dr. Day has received research support from SMA Foundation. Dr. Day has received intellectual property interests from a discovery or technology relating to health care.
Johanna Hamel, MD (University of Rochester, Neurology) Dr. Hamel has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Vertex Pharmaceuticals.
Charles A. Thornton, MD, FAAN (University of Rochester Medical Center) Dr. Thornton has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Avidity. Dr. Thornton has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Biogen. Dr. Thornton has received personal compensation in the range of $5,000-$9,999 for serving as a Consultant for Ionis. Dr. Thornton has received personal compensation in the range of $50,000-$99,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Dyne. Dr. Thornton has received personal compensation in the range of $50,000-$99,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Pepgen. The institution of Dr. Thornton has received research support from Marigold Foundation. The institution of Dr. Thornton has received research support from NIH. The institution of Dr. Thornton has received research support from Muscular Dystrophy Association . The institution of Dr. Thornton has received research support from Dyne. The institution of Dr. Thornton has received research support from Avidity. The institution of Dr. Thornton has received research support from Ionis. Dr. Thornton has received intellectual property interests from a discovery or technology relating to health care.
S H. Subramony, MBBS, FAAN (University of Florida) Dr. Subramony has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Avidity. Dr. Subramony has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Dyne. Dr. Subramony has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Lupin. Dr. Subramony has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Fallonmedica. Dr. Subramony has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Biogen. Dr. Subramony has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Amicus. Dr. Subramony has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Fulcrum. The institution of Dr. Subramony has received research support from Reata. The institution of Dr. Subramony has received research support from Retrotope. The institution of Dr. Subramony has received research support from Acceleron. The institution of Dr. Subramony has received research support from Biohaven. The institution of Dr. Subramony has received research support from Pharnext. The institution of Dr. Subramony has received research support from Fulcrum. The institution of Dr. Subramony has received research support from National Ataxia Foundation. The institution of Dr. Subramony has received research support from Friedreich Ataxia Research Alliance. The institution of Dr. Subramony has received research support from Muscular Dystrophy Association. The institution of Dr. Subramony has received research support from Univ of Rochester, MDA. The institution of Dr. Subramony has received research support from Virginia Commonwealth Univ (FDA, Wyck Foundation)). The institution of Dr. Subramony has received research support from Children's Hospital, Philadelphia (FDA). The institution of Dr. Subramony has received research support from Houston Methodist (NIH). The institution of Dr. Subramony has received research support from NIHR01 AR076060-01A1 . The institution of Dr. Subramony has received research support from NIH2R42HD089804-04 . The institution of Dr. Subramony has received research support from NIH R01 AR056973 . The institution of Dr. Subramony has received research support from FSHD Society. The institution of Dr. Subramony has received research support from AAVANTI BIO. The institution of Dr. Subramony has received research support from COHAV FL State Dept of Health. The institution of Dr. Subramony has received research support from Avidity. The institution of Dr. Subramony has received research support from PTC. The institution of Dr. Subramony has received research support from Biohaven. The institution of Dr. Subramony has received research support from Fulcrum. The institution of Dr. Subramony has received research support from Vertex. The institution of Dr. Subramony has received research support from Arthrex.
Payam Soltanzadeh, MD (UCLA Reed Neurological Research Center) The institution of Dr. Soltanzadeh has received research support from Ra Pharma (UCB). The institution of Dr. Soltanzadeh has received research support from Avidity Biosciences.
Jeffrey Statland, MD (University of Kansas Medical Center) Dr. Statland has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Arrowhead. Dr. Statland has received personal compensation in the range of $500-$4,999 for serving as a Consultant for ML Bio. Dr. Statland has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Epic Bio. Dr. Statland has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Armatus . Dr. Statland has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Kate Therapeutics. Dr. Statland has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Vita Therapeutics. Dr. Statland has received personal compensation in the range of $10,000-$49,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Dyne Therapeutics. Dr. Statland has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Avidity . Dr. Statland has received personal compensation in the range of $5,000-$9,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Fulcrum Therapeutics. Dr. Statland has received personal compensation in the range of $5,000-$9,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Roche. Dr. Statland has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Vertex . The institution of Dr. Statland has received research support from NIH. The institution of Dr. Statland has received research support from FSHD Society. The institution of Dr. Statland has received research support from Friends of FSH Research. The institution of Dr. Statland has received research support from FSHD Canada. The institution of Dr. Statland has received research support from MDA.
William D. Arnold, MD Dr. Arnold has received personal compensation in the range of $5,000-$9,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Genentech. Dr. Arnold has received personal compensation in the range of $5,000-$9,999 for serving on a Scientific Advisory or Data Safety Monitoring board for La Hoffmann Roche. Dr. Arnold has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Cadent Therapeutics . Dr. Arnold has received personal compensation in the range of $0-$499 for serving on a Scientific Advisory or Data Safety Monitoring board for Novartis. The institution of Dr. Arnold has received research support from NIH. The institution of Dr. Arnold has received research support from NMD Pharma. The institution of Dr. Arnold has received research support from Gilead Sciences. The institution of Dr. Arnold has received research support from CureSMA. Dr. Arnold has received intellectual property interests from a discovery or technology relating to health care.
Matthew P. Wicklund, MD, FAAN (UT Health San Antonio) Dr. Wicklund has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Amicus Therapeutics. Dr. Wicklund has received personal compensation in the range of $10,000-$49,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Sanofi-Genzyme. Dr. Wicklund has received personal compensation in the range of $5,000-$9,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Sarepta Therapeutics. Dr. Wicklund has received personal compensation in the range of $5,000-$9,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Spark Therapeutics. Dr. Wicklund has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Ultragenyx. Dr. Wicklund has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Vertex Pharmaceuticals. The institution of Dr. Wicklund has received research support from Orphazyme. The institution of Dr. Wicklund has received research support from Muscular Dystrophy Association. The institution of Dr. Wicklund has received research support from Coalition to Cure Calpain 3. The institution of Dr. Wicklund has received research support from Sarepta Therapeutics. The institution of Dr. Wicklund has received research support from ML Bio. The institution of Dr. Wicklund has received research support from Alexion. The institution of Dr. Wicklund has received research support from Acceleron. The institution of Dr. Wicklund has received research support from Edgewise. The institution of Dr. Wicklund has received research support from Fulcrum. The institution of Dr. Wicklund has received research support from Roche-Genentech. The institution of Dr. Wicklund has received research support from Avidity. Dr. Wicklund has received research support from Harmony Bioscience.
Kelly Ditrapani (Avidity Biosciences) Kelly Ditrapani has received personal compensation for serving as an employee of Avidity Biosciences. Kelly Ditrapani has received personal compensation for serving as an employee of Iovance Biotherapeutics. An immediate family member of Kelly Ditrapani has received personal compensation for serving as an employee of Jazz Pharmaceuticals. Kelly Ditrapani has stock in Iovance Biotherapeutics. Kelly Ditrapani has stock in Avidity Biosciences. Kelly Ditrapani has stock in Aravive Inc.. An immediate family member of Kelly Ditrapani has stock in Jazz Pharmaceuticals. Kelly Ditrapani has stock in Abbvie.
Carrie Heusner, PhD (Avidity Biosciences) Dr. Heusner has received personal compensation for serving as an employee of Avidity Biosciences.
No disclosure on file
Bradley W. McEvoy Bradley W. McEvoy has received personal compensation for serving as an employee of Acadia Pharmaceuticals. Bradley W. McEvoy has received stock or an ownership interest from Acadia Pharmaceuticals.
Yiming Zhu, PhD (Avidity Biosciences) Dr. Zhu has received personal compensation for serving as an employee of Avidity Biosciences. Dr. Zhu has stock in Avidity Biosciences.
Li-Jung Tai, MD, PhD (Avidity Biosciences) Li-Jung Tai has received personal compensation for serving as an employee of Avidity Biosciences. Li-Jung Tai has received stock or an ownership interest from Avidity.
Elizabeth J. Ackermann, PhD (Avidity Biosciences) Dr. Ackermann has received personal compensation for serving as an employee of Avidity Biosciences.