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AOC 1001

Phase 3

DM1 | Small molecule | Neurology |Atrium Therapeutics, Inc.|Last Updated: Mar 12, 2026

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
RandomizedDouble-BlindPLACEBO_CONTROLLEDDMCBiomarker
Total Trials3
Total Enrollment235
FDA Designations
No designations recorded
Clinical Trials (3)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT06411288Global Study of Del-desiran for the Treatment of DM1PHASE3 ACTIVE NOT_RECRUITING 159May 30, 2024Sep 1, 2026Jan 22, 202634 United States, Canada +8
NCT05479981Extension of AOC 1001-CS1 (MARINA) Study in Adult Myotonic Dystrophy Type 1 (DM1) PatientsPHASE2 COMPLETED 37Aug 4, 2022Sep 10, 2025Oct 8, 20258 United States
NCT05027269Study of AOC 1001 in Adult Myotonic Dystrophy Type 1 (DM1) PatientsPHASE1 COMPLETED 39Oct 28, 2021Feb 14, 2023Mar 12, 20268 United States
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Study Endpoints
Primary Endpoints
Hand function
Through Week 54

video Hand Opening Time (vHOT)

Number and severity of treatment-emergent adverse events (TEAEs)
Through study completion
Frequency of treatment emergent adverse events (TEAEs)
Through study completion, up to Day 183
Secondary Endpoints
Hand grip strength
Through Week 54
Quantitative Muscle Testing composite score
Through Week 54
Myotonic Dystrophy Type 1 activity and participation scale c
Through Week 54
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Study Design & Arms
AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Del-desiranEXPERIMENTALDel-desiran (AOC 1001) will be administered seven times
PlaceboPLACEBO_COMPARATORSaline will be administered seven times
AOC 1001EXPERIMENTALAOC 1001 will initially be administered quarterly. On Day 43 patients will receive an additional dose. Treatment assignment will be based on treatment received in AOC 1001-CS1. If participant did not receive AOC 1001 on Day 43 in AOC 1001-CS1, participant will receive AOC 1001 treatment on Day 43 in AOC 1001-CS2. Beginning in September 2024, AOC 1001 will be administered every 8 weeks.
AOC 1001 (with Placebo at Day 43)EXPERIMENTALAOC 1001 will initially be administered quarterly. On Day 43 patients will receive an additional dose. Treatment assignment will be based on treatment received in AOC 1001-CS1. If participant received AOC 1001 on Day 43 in AOC 1001-CS1, participant will receive blinded placebo treatment on Day 43 in AOC 1001-CS2. Beginning in September 2024, AOC 1001 will be administered every 8 weeks.
Part A Single Dose: AOC 1001 Dose Level 1EXPERIMENTALAOC 1001 will be administered once.
Part A Single Dose: PlaceboPLACEBO_COMPARATORSaline will be administered once.
Part B Multiple Ascending Dose: AOC 1001 Dose Levels 2 & 3EXPERIMENTALAOC 1001 will be administered three times.
Part B Multiple Ascending Dose: PlaceboPLACEBO_COMPARATORSaline will be administered three times.
Interventions
NameTypeDescription
AOC 1001 (del-desiran)DRUGDel-desiran will be administered by intravenous (IV) infusion.
PlaceboDRUGPlacebo will be administered by intravenous (IV) infusion.
AOC 1001DRUGAOC 1001 will be administered by intravenous (IV) infusion.
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Eligibility Criteria
Age Range16 Years — 65 Years
SexALL
Healthy VolunteersNo
Study Sites34

Key Inclusion Criteria: * Clinical and genetic diagnosis (CTG repeat ≥ 100) of DM1 * Ability to walk independently (orthoses and ankle braces allowed) for at least 10 meters at screening Key Exclusion Criteria: * Breastfeeding, pregnancy, or intent to become pregnant during the study * Unwilling ...

Countries:United StatesCanadaDenmarkFranceGermanyItalyJapanNetherlandsSpainUnited Kingdom
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Recent Changes (Last 90 Days)
LOWMay 26, 2026NCT06411288primaryCompletionDate: changed
LOWMay 24, 2026NCT06411288studyFirstPostDate: changed