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Galinpepimut-S

Phase 3

Acute Myeloid Leukemia | Monoclonal antibody | Oncology |SELLAS Life Sciences Group, Inc.|Last Updated: Oct 1, 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
RandomizedACTIVE_CONTROLLEDDMCBiomarker
Total Trials2
Total Enrollment149
FDA Designations
No designations recorded
Clinical Trials (2)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT04229979Galinpepimut-S Versus Investigator's Choice of Best Available Therapy for Maintenance in AML CR2/CRp2PHASE3 ACTIVE NOT_RECRUITING 127Feb 8, 2021Dec 1, 2026Oct 1, 202573 United States, France +8
NCT01266083WT1 Vaccine Treatment of Patients in Remission From Acute Myeloid Leukemia (AML) or Acute Lymphoblastic Leukemia (ALL)PHASE2 COMPLETED 22Jan 14, 2011Sep 30, 2016Nov 19, 20241 United States
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Study Endpoints
Primary Endpoints
OS
5 years

Interval between randomization and death from any cause

Overall Survival
3 years

OS at 3 years, measured from first treatment with GPS to patient's survival status at 3 years or more

Secondary Endpoints
LFS
5 years
OS rate (%)
At 6, 9 and 12 months
LFS rate (%)
At 6, 9, and 12 months
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Study Design & Arms
AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Galinpepimut-S + Montanide + GM-CSFEXPERIMENTALGalinpepimut-S injections will be administered as follows, until disease relapse: 1. First 6 galinpepimut-S injections: every 2 weeks (Weeks 0 - 10) followed by a 4-week period of no treatment. The first series of 6 injections of galinpepimut-S define the initial immunization induction phase. 2. Injections 7 to 12: every 4 weeks (Weeks 14 - 34) followed by a 6-week period of no treatment. The second series of injections of galinpepimut-S define the early immune booster phase. 3. Injections 13 to 15: every 6 weeks (Weeks 40 - 52). The third series of injections of galinpepimut-S define the late immune booster phase. 4. Injections 16-20: every 2 months (in Year 2). 5. Injection 21 and thereafter: every 3 months (in Year 3). Y2 and Y3 define the maintenance phase. Note: Galinpepimut-S is admixed with Montanide adjuvant before administered as a subcutaneous injection. GM-CSF is administered two days before and on the same day as the galinpepimut-S + Montanide injection.
Best Available TherapyACTIVE_COMPARATORFour options, as monotherapy or as combination of agents listed below, (per treating investigator's choice): 1. Observation (whereby palliative management with hydroxyurea is allowed), or 2. HMA (decitabine or azacitidine), and/or 3. Venetoclax, and/or 4. Low-dose ara-C
Interventions
NameTypeDescription
Galinpepimut-SBIOLOGICALGalinpepimut-S admixed with the adjuvant Montanide following specified schedule
AzacitidineDRUGinjection
VenetoclaxDRUGtablet
DecitabineDRUGinjection
CytarabineDRUGinjection
ObservationOTHERpalliative management
GM-CSFBIOLOGICALsubcutaneous injection
MontanideOTHERadjuvant
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites73

Inclusion Criteria: 1. Willing and able to understand and provide signed informed consent for the study that fulfills Institution Review Board (IRB) guidelines. 2. Male or female patients ≥18 years of age on the day of signing informed consent. 3. Must have a diagnosis of AML according to the WHO c...

Countries:United StatesFranceGermanyGreeceHungaryIndiaPolandSerbiaSpainTaiwan
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Recent Changes (Last 90 Days)
LOWMay 26, 2026NCT04229979primaryCompletionDate: changed
LOWMay 24, 2026NCT04229979studyFirstPostDate: changed