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SLS009

Phase 1

Hematologic Malignancies | Small molecule | Other |SELLAS Life Sciences Group, Inc.|Last Updated: May 1, 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
RandomizedACTIVE_CONTROLLEDBiomarker
Total Trials1
Total Enrollment160
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT04588922Study of SLS009 (Formerly GFH009) a Potent Highly Selective CDK9 Inhibitor in Patients With Hematologic Malignancies and High-Risk Newly Diagnosed AMLPHASE1 RECRUITING 160May 10, 2021Dec 31, 2027May 1, 202625 United States, China
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Study Endpoints
Primary Endpoints
Safety and Tolerability: Dose Limiting Toxicities (DLTs)
21 to 28 days

The incidence of DLTs

Safety and Tolerability: adverse events (AEs)
approximately 2 years

The incidence and severity of all AEs

Efficacy: ORR
2 years

Overall response rate is the proportion of patients showing anti-leukemic activity in response to treatment

Secondary Endpoints
PK parameter AUC0-t
approximately 3 months
PK parameter AUC0-∞
approximately 3 months
Efficacy: DOR
2 years
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Study Design & Arms
AllocationRANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Group 1. Dose escalation in patients with r/r AMLEXPERIMENTALIn the dose escalation part, the dose levels will be escalated following the Bayesian optimal interval (BOIN) design. China study sites only. (Completed).
Group 2. Dose escalation in patients with r/r CLL/SLL or lymphomaEXPERIMENTALIn the dose escalation part, the dose levels will be escalated following the Bayesian optimal interval (BOIN) design. China and US study sites. (Completed).
Group 3 Cohort 1. 45 mg QW in patients with r/r AMLEXPERIMENTALSLS009 (45 mg QW) in combination with venetoclax and azacitidine in patients with r/r AML who have relapsed on or are refractory to venetoclax-based regimens. US study sites only. (Cohort completed)
Group 3 Cohort 2. 60 mg QW in patients with r/r AML.EXPERIMENTALSLS009 (60 mg QW) in combination with venetoclax and azacitidine in patients with r/r AML who have relapsed on or are refractory to venetoclax-based regimens. US study sites only. (Cohort completed).
Group 3 Cohort 3. 30 mg BIW in patients with r/r AML.EXPERIMENTALSLS009 (30 mg BIW) in combination with venetoclax and azacitidine in patients with r/r AML who have relapsed on or are refractory to venetoclax-based regimens. US study sites only. (Cohort completed).
Group 3 Cohort 4. 30 mg BIW in patients with r/r AML with ASXL1 mutation.EXPERIMENTALSLS009 (30 mg BIW) in combination with venetoclax and azacitidine in patients with r/r AML who have relapsed or are refractory to venetoclax-based regimens and with documented ASXL1 mutation.
Group 3 Cohort 5. 30 mg BIW in pts with r/rAML with other than ASXL1 mutationsEXPERIMENTALSLS009 (30 mg BIW) in combination with venetoclax and azacitidine in patients with r/r AML who have relapsed or are refractory to venetoclax-based regimens and with documented Defining somatic mutations, Cytogenetic abnormalities defining acute myeloid leukemia, myelodysplasia related, other than ASXL1 mutation per WHO 5th Edition classification.
Group 4 (treatment arm): SLS009, venetoclax, azacitidineEXPERIMENTALSLS009 (30 mg BIW) in combination with venetoclax and azacitidine in patients with newly diagnosed AML less likely to benefit from standard venetoclax and azacitidine therapy based on molecular profiling.
Group 4 (control arm): venetoclax and azacitidineACTIVE_COMPARATORVenetoclax and azacitidine in patients with newly diagnosed AML less likely to benefit from standard venetoclax and azacitidine therapy based on molecular profiling.
Group 5 (treatment arm): SLS009, venetoclax, azacitidine (not yet recruiting)EXPERIMENTALSLS009 (30 mg BIW) in combination with venetoclax and azacitidine in patients with newly diagnosed AML. Patients who initiate treatment with venetoclax and azacitidine but demonstrate a confirmed lack of any response after two treatment cycles.
Group 5 (control arm): venetoclax and azacitidine (not yet recruiting)ACTIVE_COMPARATORVenetoclax and azacitidine in patients with newly diagnosed AML. Patients who initiate treatment with venetoclax and azacitidine but demonstrate a confirmed lack of any response after two treatment cycles.
Interventions
NameTypeDescription
SLS009DRUGSolution for injection
venetoclaxDRUGTablets
azacitidineDRUGSolution for injection
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Eligibility Criteria
Age Range12 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites25

Inclusion Criteria For Groups 1, 2, 3, 4 and 5: Patients eligible for inclusion must meet all of the following criteria: 1. Male or female ≥ 18 years. For Group 3 Cohorts 4 and 5 only male or female ≥18 years and pediatric patients 12-18 years and ≥40 kg body mass 2. Written informed consent must...

Countries:United StatesChina
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Recent Changes (Last 90 Days)
LOWMay 26, 2026NCT04588922primaryCompletionDate: changed
LOWMay 24, 2026NCT04588922studyFirstPostDate: changed