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Descartes-08

Phase 2

Myasthenia Gravis, Generalized | Small molecule | Neurology |Cartesian Therapeutics, Inc.|Last Updated: May 28, 2025

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_CONTROLLEDBiomarker
Total Trials1
Total Enrollment30
FDA Designations
RARE_PEDIATRIC_DISEASE
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT04146051Descartes-08 CAR-T Cells in Generalized Myasthenia Gravis (MG)PHASE2 ACTIVE NOT_RECRUITING 30Dec 4, 2019Mar 31, 2026May 28, 202515 United States, Canada
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Study Endpoints
Primary Endpoints
Proportion of patients with MG Composite improvement of ≥5 points.
Day 0 to Day 85

In Part 3, the primary objective is to compare the effect of Descartes-08 versus placebo, as measured by the change in MGC score from baseline to Week 12. In Part 1, up to three ascending doses of Descartes-08 will be administered to each of 3 to 6 patients; the patients will be staggered at least 21 days apart and will complete a safety review between each dose. In Part 2, patients will receive up to 6 doses in three different schedules depending on the arm they were enrolled into and will be monitored for up to 1 year to assess the safety and tolerability of a repeated dosing schedule.

Secondary Endpoints
Comparison on Descartes-08 versus placebo on QMG and MG ADL
Day 0 to Day 85
Comparison on Descartes-08 versus placebo on MG assessments in crossover patients
Day 0 to Day 85
Change in titer of myasthenia specific autoantibody titers
Day 0 to Day 168
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Study Design & Arms
AllocationRANDOMIZED
MaskingQUADRUPLE
ModelCROSSOVER
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Phase 1b Dose-EscalationEXPERIMENTALGeneralized Myasthenia Gravis
Phase IIa ExpansionEXPERIMENTALGeneralized Myasthenia Gravis
Phase IIb Randomized Control TrialPLACEBO_COMPARATORGeneralized Myasthenia Gravis
Interventions
NameTypeDescription
Descartes-08DRUGAutogolous T-cells expressing a chimeric antigen receptor directed to BCMA
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites15

Inclusion Criteria: * Patient must be at least 18 years of age. * Patient must have Generalized Myasthenia Gravis at the time of screening. * Concomitant immunosuppressive drugs must be deemed necessary by the investigator. * Seronegative Patients are included Exclusion Criteria: * Major chronic ...

Countries:United StatesCanada
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Recent Changes (Last 90 Days)
LOWMay 26, 2026NCT04146051primaryCompletionDate: changed
LOWMay 24, 2026NCT04146051studyFirstPostDate: changed