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Navitoclax

Phase 1

Myelodysplastic Syndrome | Monoclonal antibody | Hematology |AbbVie Inc.|Last Updated: May 19, 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
UNCONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment6
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT05564650Navitoclax in Relapsed or Refractory High-Risk Myelodysplastic SyndromePHASE1 COMPLETED 6Jan 12, 2023May 8, 2026May 19, 20261 United States
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Study Endpoints
Primary Endpoints
Maximally Tolerated Dose (MTD) of Navitoclax in Combination with Venetoclax and Decitabine (Phase I)
Within 30 days of the first dose of study treatment

The Bayesian optimal interval (BOIN) design will be employed to find the MTD. The BOIN design is implemented in a simple way. It is more flexible and possesses superior operating characteristics that are comparable to those of the more complex model based designs.

Complete Response (CR) Rate (Phase II)
Up to cycle 4, an average of 4 months

A 90% confidence interval will be computed for the CR rate by cycle 4.

Secondary Endpoints
Number of Dose-Limiting Toxicities (Phase I)
Within 30 days of the first dose of study treatment
Marrow Complete Response Rate (mCR) (Phase II)
Up to 2 years from enrollment of the last patient
Hematologic Improvement (HI) rate (Phase II)
Up to 2 years from enrollment of the last patient
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Study Design & Arms
AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Treatment (navitoclax, decitabine, venetoclax)EXPERIMENTALThis is a single-center trial of navitoclax, venetoclax and decitabine in adult patients with R/R HR-MDS who have previously failed HMA therapy. This trial was intended to be a Phase 1/2 trial but the trial never moved forward to Phase 2. In the phase I dose escalation portion, patients will receive navitoclax in combination with standard dosing of venetoclax and decitabine. The maximally tolerated dose (MTD) will be the recommended phase II dose (RP2D). Previously, navitoclax in combination with venetoclax and chemotherapy in ALL found the MTD to 50mg of nativoclax po. In the phase II dose expansion portion, patients will receive navitoclax at the RP2D in combination with standard dose venetoclax and decitabine. Patients will continue on treatment with navitoclax, venetoclax and decitabine until relapse, dose-limiting toxicity, availability of alternate therapy or withdrawal of consent.
Interventions
NameTypeDescription
NavitoclaxBIOLOGICALGiven PO
VenetoclaxDRUGGiven PO
DecitabineDRUGGiven IV
Bone Marrow BiopsyPROCEDUREUndergo bone marrow biopsy
Biospecimen CollectionPROCEDUREUndergo collection of blood
Laboratory Biomarker AnalysisOTHERCorrelative studies
Quality-of-Life AssessmentOTHERAncillary studies
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites1

Inclusion Criteria: * Provide signed and dated informed consent form * Willing to comply with all study procedures and be available for the duration of the study * Male or female, aged 18 years or older * Must have myelodysplastic syndrome with Revised International Prognostic Score (IPSS-R) of at ...

Countries:United States
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Competitive Landscape -Myelodysplastic Syndromes 76 trials
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Recent Changes (Last 90 Days)
LOWMay 24, 2026NCT05564650studyFirstPostDate: changed