Recent Updates
Recently added Catalysts

CPX-351

Phase 3

High Risk Acute Myeloid Leukemia | Small molecule | Oncology |Jazz Pharmaceuticals plc|Last Updated: Apr 14, 2026

Success Probability

Subscribe to view

Market & Valuation

Subscribe to view

Trial Design

RandomizedACTIVE_CONTROLLEDDMC
Total Trials1
Total Enrollment309

FDA Designations

No designations recorded

Clinical trial landscape

CPX-351 · 9 trials · 10 indications

Phase 3 1Phase 2 3Phase 1 5
NCT01696084Phase III Study of CPX-351 Versus 7+3 in Patients 60-75 Years Old With Untreated High Risk (Secondary) Acute Myeloid LeukemiaHigh Risk Acute Myeloid Leukemia
COMPLETED309 Analytics
PHASE3COMPLETED
Phase III Study of CPX-351 Versus 7+3 in Patients 60-75 Years Old With Untreated High Risk (Secondary) Acute Myeloid Leukemia
High Risk Acute Myeloid LeukemiaUnlock trial analytics

Study Endpoints

Primary Endpoints

Overall Survival
From the date of randomization to death from any cause

Overall survival was measured from the date of randomization to death from any cause, subjects not known to have died by the last follow-up were censored on the date they were last known to be alive.

Effect of CPX-351 on Cardiac Ventricular Repolarization (QTcF)
21 days

Time-matched QTcF Changes From Baseline after the start of first infusion

Proportion of Subjects Surviving at 1 Year
Up to 1 year from randomization

The proportion of subjects surviving at 1 year was evaluated separately for each arm by the number of subjects alive at 1 year divided by the total number of subjects.

Number of Participants With Complete Remission
Within 6 weeks of the last induction treatment

Response was defined according to International Working Group Criteria (Cheson, et al. 2003) which requires peripheral blood neutrophils of \>1000/µL and peripheral blood platelets of \>100,000/µL in the absence of bone marrow blasts.

Maximum tolerate dose (Phase 1)
1 cycle (28 day cycle)

Number of subjects with Dose Limiting toxicities will be used to determine the recommended phase II dose of CPX-351 to be used in the maintenance setting for newly diagnosed AML in complete remission.

Inicidence of Treatment Emergent Adverse events (Phase 2)
6 cycles (28 day cycles)

To determine the safety, tolerability and toxicity of CPX-351 in the maintenance setting for newly diagnosed AML in complete remission by analyzing the incidence of treatment emergent adverse events reported.

Safety and tolerability of a CPX-351 regimen in a transplant eligible, higher risk MDS population as measured by the proportion of participants who experience an adverse event by patient, type of event, and grade of event
Through 56 days after the last dose
Determine the Recommended Phase 2 Dose (RP2D)
Up to 30 months

The RP2D will be determined by the specified dose de-escalation/dose escalation algorithm.

Safety and Tolerability of CPX-351 and Targeted Agents: incidence of adverse events (AEs) and dose limiting toxicities (DLTs)
Up to 30 months

The safety and tolerability of CPX-351 and targeted agents when given in combination, based on the incidence of adverse events (AEs) and dose limiting toxicities (DLTs)

Maximum Tolerated Dose (MTD) as determined by the specified dose exploration
Up to 36 months

The Recommended Phase 2 Dose (RP2D) as determined by an assessment of all safety data from the Dose Exploration Phase.

Incidence of Adverse Events (AE) and Dose Limiting Toxicities (DLT)
Up to 36 months

The safety and tolerability of CPX-351 and venetoclax when given in combination based on the incidence of AEs and DLTs

Pharmacokinetics (PK) of CPX-351
Blood samples will be collected during first induction on Day 1 predose, Day 5 predose, 45 and 90 minutes post infusion start, 2, 3, 4, 6, 8, 24, 48, 96, 168, and 216 hours post Day 5 infusion start.

The key PK parameter AUCtau will be assessed

Secondary Endpoints

Proportion of Subjects With a Response
Post Induction
Event-free Survival
From the date of randomization to the date that persistent disease was documented or the date of relapse after CR or death, whichever came first
Remission Duration
From the date of achievement of a remission until the date of relapse or death from any cause
Unlock Study Endpoints

Study Design & Arms

AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Arm A (CPX-351)EXPERIMENTALSubjects are eligible to receive up to 2 inductions and up to 2 consolidations with CPX-351. The number of inductions and consolidations a subject received depended on response.
Arm B (7+3)ACTIVE_COMPARATORSubjects are eligible to receive up to 2 inductions and up to 2 consolidations with cytarabine and daunorubicin given as a 7 + 3, or 5 days of continuous infusion of cytarabine and 2 days of daunorubicin (5+2, second induction, consolidation courses) therapy. The number of inductions and consolidations a subject received depended on response.
CPX-351EXPERIMENTALSingle Arm Study (Patients may receive up to 2 Inductions and 4 Consolidations): Induction 1: CPX-351 will be given intravenously at 100units/m2 on days 1, 3, and 5 over a 90 minute infusion. Induction 2: CPX-351 will be given intravenously at 100units/m2 on days 1 and 3 over a 90 minute infusion. Consolidations 1-4: CPX-351 will be given intravenously at 65units/m2 on days 1 and 3 over a 90 minute infusion.
CPX-351 (Arm A)EXPERIMENTALFirst induction: 100 units/m2 on Days 1, 3, and 5 by 90-minute IV infusion Second induction: 100 units/m2 on Days 1 and 3 by 90-minute IV infusion Consolidation(s): 100 units/m2 on Days 1 and 3 by 90-minute IV infusion
Salvage Therapy (Arm B)ACTIVE_COMPARATORFirst induction: Investigator's choice salvage therapy administered according to local practice Second induction: Investigator's choice salvage therapy administered according to local practice Consolidation(s): Investigator's choice consolidation therapy administered according to local practice
Arm A: CPX-351EXPERIMENTALFirst induction: CPX-351 at 100u/m2 administered on days 1, 3 and 5 Second induction: CPX-351 at 100u/m2 administered on days 1 and 3 Consolidation: CPX-351 at 100u/m2 administered on days 1 and 3
Arm B: Cytarabine + DaunorubicinACTIVE_COMPARATORFirst induction: Cytarabine at a dose of 100mg/m2/day on days 1-7, Daunorubicin at dose of 45 or 60mg/m2 on days 1-3 Second induction: Cytarabine at a dose of 100mg/m2/day on days 1-5, Daunorubicin at a dose of 45 or 60 mg/m2/day on days 1 and 2 Consolidation: Investigator's Choice
Arm AEXPERIMENTAL -
Arm BEXPERIMENTAL -
Arm CEXPERIMENTAL -
CPX-351 and VenetoclaxEXPERIMENTALCPX-351 and Venetoclax will be administered over 28 day cycles
Cohort 1EXPERIMENTALNormal renal function
Cohort 2EXPERIMENTALModerate renal impairment
Cohort 3EXPERIMENTALSevere renal impairment

Interventions

NameTypeDescription
CPX-351DRUGFirst induction: 100 units/m2 by 90-minute IV infusion on Days 1, 3, 5. Second induction: 100 units/m2 by 90-minute IV infusion on Days 1 and 3. Consolidation therapy: 65 units/m2 by 90-minute IV infusion on Days 1 and 3.
7+3 (cytarabine and daunorubicin)DRUGFirst induction: 7+3 was administered as: cytarabine at a dose of 100 mg/m2/day on Days 1 through 7 by continuous infusion, and daunorubicin at a dose of 60 mg/m2/day on Days 1, 2, and 3. Second induction: 5+2 was administered as: cytarabine at a dose of 100 mg/m2/day on Days 1 through 5 by continuous infusion and daunorubicin at a dose of 60 mg/m2/day on Days 1 and 2. Consolidation therapy: 5+2 was administered as: cytarabine at a dose of 100 mg/m2/day on Days 1 through 5 by continuous infusion, and daunorubicin at a dose of 60 mg/m2/day on Days 1 and 2.
Intensive Salvage TherapyDRUG -
CytarabineDRUG -
DaunorubicinDRUG -
Research skin biopsyPROCEDURE-And/or buccal swab * Pre-treatment * Post-induction (no earlier than Day 28 and no later than Day 56 from last induction)
Research blood drawPROCEDURE* Pre-treatment * Post-induction (no earlier than Day 28 and no later than Day 56 from last induction) * Post-consolidation 1 (if applicable) * Post-consolidation 2 (if applicable) * Post-transplant Day 30 (if applicable) * Post-transplant Day 100 (if applicable)
Research bone marrow aspiratePROCEDURE* Pre-treatment * Post-induction (no earlier than Day 28 and no later than Day 56 from last induction) * Post-consolidation 1 (if applicable) * Post-consolidation 2 (if applicable) * Post-transplant Day 30 (if applicable) * Post-transplant Day 100 (if applicable)
VenetoclaxDRUGWill be administered over specified duration during induction and consolidation courses
MidostaurinDRUGWill be administered over specified duration during induction and consolidation courses
EnasidenibDRUGWill be administered over specified duration during induction and consolidation courses
Unlock Study Design Details

Eligibility Criteria

Age Range60 Years to 75 Years
SexALL
Healthy VolunteersNo
Study Sites43

Inclusion Criteria: * Ability to understand and voluntarily give informed consent * Age 60-75 years at the time of diagnosis of AML * Pathological diagnosis of AML according to WHO criteria (with at least 20% blasts in the peripheral blood or bone marrow) * Confirmation of: * Therapy related AML...

Countries:United StatesCanadaFrancePoland
Unlock Eligibility Criteria

Frequently asked questions about CPX-351

What is CPX-351 used for?

CPX-351 is an investigational small molecule being studied for the treatment of Acute Myeloid Leukemia (AML), including high risk AML and AML in remission, as well as Myelodysplastic Syndromes and other hematologic malignancies. It is being developed by Jazz Pharmaceuticals plc (JAZZ) and is currently in Phase 2 clinical development.

Who makes CPX-351?

CPX-351 is being developed by Jazz Pharmaceuticals plc, which trades on the stock exchange under the ticker JAZZ. The company is conducting clinical trials to evaluate the drug for the treatment of Acute Myeloid Leukemia and related hematologic conditions.

What phase is CPX-351 in?

CPX-351 is currently in Phase 2 clinical development. It has completed four clinical trials, including two Phase 2 studies and two Phase 1 studies, with a total enrollment of 344 participants across all trials. The drug is investigational and has not been approved by regulatory authorities.

What clinical trials is CPX-351 in?

CPX-351 has been studied in four clinical trials. These include NCT00788892, a Phase 2 trial in newly diagnosed elderly AML patients; NCT00822094, a Phase 2 trial in adult patients with first relapse AML; NCT04038437, a Phase 1 trial combining CPX-351 with venetoclax; and NCT04075747, a Phase 1b master trial in previously untreated AML.

Is CPX-351 the same as Vyxeos?

CPX-351 is also known by the brand name Vyxeos. It is a liposomal formulation of the chemotherapy drugs daunorubicin and cytarabine, developed by Jazz Pharmaceuticals. The drug is being investigated for the treatment of Acute Myeloid Leukemia and other hematologic malignancies.

How does CPX-351 work?

CPX-351 is a liposomal encapsulation of daunorubicin and cytarabine, two chemotherapy agents that work by interfering with DNA synthesis in rapidly dividing cancer cells. The liposomal formulation is designed to deliver a synergistic ratio of the drugs to leukemia cells, potentially improving efficacy and reducing toxicity compared to standard chemotherapy.