Evaluation of CPX-351 Monotherapy in Acute Myeloid Leukemia Secondary to Myeloproliferative Neoplasm

Last updated: October 25, 2024
Sponsor: French Innovative Leukemia Organisation
Overall Status: Completed

Phase

2

Condition

Leukemia

Platelet Disorders

Acute Myeloid Leukemia

Treatment

CPX-351

Clinical Study ID

NCT04992949
CPX-351 TA-SMP
  • Ages > 18
  • All Genders

Study Summary

The three classic myeloproliferative neoplasms (MPNs) include polycythemia Vera (PV), essential thrombocythemia (ET) and primary myelofibrosis (PMF). The natural history of these MPNs is the possible progression to acute myeloid leukemia (MPN-blast phase) at variable percentage depending the entity. Leukemic transformation of MPN occurs in 8% to 23% of primary myelofibrosis (PMF) patients in the first 10 years after diagnosis and in 4% to 8% of polycythemia vera (PV) and essential thrombocytosis (ET) patients within 18 years after diagnosis. The risk for leukemic transformation is increased by exposure to cytotoxic chemotherapy. The molecular pathogenesis of MPN-blast phase remains an area of active research.

The prognosis of blast phase MPNs is very poor : approximately 50% of the patients are deemed eligible for intensive treatment (ie. conventional induction chemotherapy regimen with anthracyclines and cytarabine). The patients who are not fit for such intensive treatment approach due to age or comorbidities, are treated with Hypomethylating agents, low dose palliative chemotherapy, or supportive care. Nevertheless, there is a need for more effective and better tolerated treatment approaches in order to increase the response rate and hence, the transplant rates which should translate into improved survival.

CPX-351 is a new formulation of cytarabine and daunorubicin encapsulated at a fixed 5:1 molar-ratio in liposomes that exploits molar ratio-dependent drug-drug synergy to enhance antileukemic efficacy.

Based on similarities between post-myelodysplastic syndrome (MDS) and post-MPN secondary AML in terms of disease resistance to chemotherapy, of fragile patient profile, The hypotheses made is that CPX-351 may improve the results of induction chemotherapy without increasing its toxicity and therefore may increase the proportion of patients who could benefit from an allogeneic Stem Cell Transplantation (SCT).

Eligibility Criteria

Inclusion

Inclusion Criteria:

  • Diagnosis of newly secondary AML according to WHO 2016 classification following anantecedent of Myeloproliferative Neoplasm including Essential Thrombocythemia (ET),Polycythemia Vera (PV), primary or secondary Myelofibrosis

  • Performance status 2 Eastern Cooperative Oncology Group (ECOG) grading.

  • Eligible for standard intensive chemotherapy

  • Absence of concomitant severe cardiovascular disease which would make intensivechemotherapy impossible, i.e. arrhythmias requiring chronic treatment, congestiveheart failure or symptomatic ischemic heart disease, reduced left ventricularfunction assessed by multigated acquisition (MUGA) scan or echocardiogram. Cardiacejection fraction ≥ 50% by echocardiography ou MUGA

  • Patient must have adequate organ function as indicated by the following laboratoryvalues:

  • Renal

  • Serum creatinine: < 2 mg/dl OR calculated creatinine clearance*: ≥ 30mL/min by MDRD formula for patients with creatinine levels > 1.5 Xinstitutional Upper Limit Normal (ULN)

  • Hepatic

  • Serum total bilirubin: ≤ 2.5 X ULN OR direct bilirubin ≤ ULN for patientswith total bilirubin levels ≥ 2 mg/dL unless Gilbert's Syndrome

  • Aspartate-Amino-Transferase (ASAT) and Alanine-Transaminase (ALAT): ≤ 2.5times ULN

  • Alkaline Phosphatase: ≤ 5 X ULN, if > 2.5 X ULN, then liver fractionshould be ≤ 2.5 X ULN *Creatinine clearance should be calculated perinstitutional standard

  • Life expectancy should be of 12 weeks at least according to investigator evaluation

  • Female patients of childbearing potential must have a negative serum pregnancy test (β-hCG) within 72 hours prior to receiving the first dose of CPX-351. Femalepatients who are not post-menopausal, free from menses for > 2 years or surgicallysterilized, will have to use adequate barrier methods of contraception to preventpregnancy or agree to abstain from becoming pregnant throughout the study, startingwith Visit 1.

  • Male patients agree to use an adequate method of contraception for the duration ofthe study. Men should be advised not to father a child while receiving CPX-351 andfor 3 months post study.

  • Patients have the ability to understand and willingness to sign an informed consentform indicating the investigational nature of the study.

Exclusion

Exclusion Criteria:

  • MPN/MDS mixed types

  • Prior therapy for AML transformation except for Hydroxyurea

  • Prior treatment with growth factors such as erythropoietin alfa (EPO) or granulocytecolony-stimulating factor (G-CSF), low-dose oral chemotherapy or Hypomethylatingagents chemotherapy given in the chronic phase of MPN in the 30 days beforeinclusion, except for hydroxyurea.

  • Uncontrolled undercurrent illness or circumstances that could limit compliance withthe study, including but not limited to the following: symptomatic congestive heartfailure, unstable angina pectoris, uncontrolled cardiac arrhythmia, pancreatitis, orpsychiatric or social conditions that may interfere with patient compliance.

  • Active and uncontrolled infection

  • Current participation or participation in a study with an investigational compoundor device within 30 days of initial dosing with study drug

  • Patients with acute promyelocytic leukemia.

  • Known human immunodeficiency virus (HIV) infection or HIV-related malignancy

  • Clinically active hepatitis B or hepatitis C infection.

  • Known allergy or hypersensitivity to any component of CPX-351.

  • Currently active second malignancy, other than non-melanoma skin cancer and in situcarcinoma of the cervix. Patients are not considered to have a "currently active"malignancy if they have completed therapy for a prior malignancy, are disease freefrom prior malignancies for >3 years or are considered by their physician to be atless than 30% risk of relapse

  • Clinical evidence of Central Nervous System Leukemia.

  • Pregnancy or breastfeeding during the projected duration of the study.

Study Design

Total Participants: 42
Treatment Group(s): 1
Primary Treatment: CPX-351
Phase: 2
Study Start date:
March 23, 2022
Estimated Completion Date:
December 04, 2023

Study Description

The primary objective of the study is to evaluate the Complete Remission (CR/CRi) rate after treatment with CPX-351 in patients with AML secondary to myeloproliferative neoplasms (post-MPN AML).

The hypotheses made is that treatment with CPX-351 will improve the historical response rate from 45% to 65%. The exact single stage Phase II design was used to calculate the number of patients. The null hypothesis H0 is that the probability p of CR/CRi rate with CPX351 is equal or lower than the historical rate p0 of 45% (H0: p≤p0). The alternative hypothesis H1 that is p>p0, supposing that CR/CRi rate will be 65% using CPX351. Considering an alpha risk of 5% and a power of 80%, 42 patients will be included, and H0 will be rejected if at least 25 patients achieve CR /CRi (R-project, "clinfun" package).

Inclusion period : 36 months

Treatment period (6 months) :

  • one or two cycles of induction treatment with CPX-351 (depending on CR/CRi achieving). If CR/CRi is not achieved following the induction phase, patients will go off study.

  • 2 courses of consolidation therapy with CPX-351 (patients for whom an allo-SCT is planned will receive a maximum of one consolidation cycle)

All included patients will be followed for 60 days after the End of Treatment (EOT) or at the date of allogeneic stem cell transplantation when appropriate : the day-60 follow-up visit will be the End Of Study (EOS) visit. The anti-leukemic chemotherapy administrated after relapse will be recorded.

After completion of the study, subjects will be followed-up at regular intervals (every 3 months) to collect information on the subjects' survival and disease (relapse) status. Survival status will be collected until death, or withdrawal of consent or lost to follow-up, whichever occurs first..

Connect with a study center

  • AMIENS - CHU Amiens Picardie

    Amiens, 80054
    France

    Site Not Available

  • ANGERS - CHU - Maladies du sang

    Angers, 49933
    France

    Site Not Available

  • AVIGNON - Centre Hospitalier

    Avignon, 84000
    France

    Site Not Available

  • BAYONNE - CH de la Côte Basque - Hématologie

    Bayonne, 64109
    France

    Site Not Available

  • AVICENNE - Centre de Recherche Clinique

    Bobigny, 93009
    France

    Site Not Available

  • BREST - Hôpital Morvan

    Brest, 29609
    France

    Site Not Available

  • CAEN - CHU Caen - IHBN

    Caen, 14033
    France

    Site Not Available

  • CLAMART - Hôpital d'Instruction des Armées de Percy

    Clamart, 92140
    France

    Site Not Available

  • Clermont-Ferrand - Chu Estaing

    Clermont-Ferrand, 63000
    France

    Site Not Available

  • CRETEIL - CHU Henri Mondor

    Créteil, 94000
    France

    Site Not Available

  • Grenoble - CHUGA - Hématologie Clinique

    Grenoble, 38043
    France

    Site Not Available

  • LILLE CHU - Hôpital Claude Huriez

    Lille, 59037
    France

    Site Not Available

  • LIMOGES - CHU Dupuytren 1

    Limoges, 87042
    France

    Site Not Available

  • LYON-Centre Léon Bérard

    Lyon, 69008
    France

    Site Not Available

  • MARSEILLE - Institut Paoli-Calmettes

    Marseille, 13000
    France

    Site Not Available

  • MONTPELLIER - Hôpital Saint-Eloi - Hématologie Clinique

    Montpellier, 34295
    France

    Site Not Available

  • NANTES - Hôpital Hôtel Dieu - Hématologie Clinique

    Nantes, 44093
    France

    Site Not Available

  • NICE - CHU - Hopital Archet 1

    Nice, 06202
    France

    Site Not Available

  • NICE - Centre Antoine Lacassagne

    Nice, 06189
    France

    Site Not Available

  • NIMES - CHU Caremeau

    Nîmes, 30029
    France

    Site Not Available

  • ORLEANS - CHR - Hématologie

    Orléans, 44100
    France

    Site Not Available

  • Paris Saint Louis

    Paris, 75475
    France

    Site Not Available

  • Paris St Antoine

    Paris, 75012
    France

    Site Not Available

  • BORDEAUX - Hôpital Haut-Levêque

    Pessac, 33600
    France

    Site Not Available

  • LYON HCL - CH Lyon Sud

    Pierre-Bénite, 69036
    France

    Site Not Available

  • POITIERS - Hôpital La Milétrie - Hématologie Clinique

    Poitiers, 86000
    France

    Site Not Available

  • REIMS - Hôpital Robert Debré - Hématologie Clinique

    Reims, 51100
    France

    Site Not Available

  • RENNES - Hôpital Pontchaillou - Hématologie

    Rennes, 35033
    France

    Site Not Available

  • Strasbourg - Icans

    Strasbourg, 67033
    France

    Site Not Available

  • Toulouse - IUCT Oncopole - Service d'Hématologie

    Toulouse, 31059
    France

    Site Not Available

  • TOURS - Hôpital Bretonneau

    Tours, 37000
    France

    Site Not Available

  • NANCY - CHU de Brabois

    Vandœuvre-lès-Nancy, 54500
    France

    Site Not Available

  • VERSAILLES - Hôpital André Mignot

    Versailles,
    France

    Site Not Available

  • Institut Gustave Roussy

    Villejuif,
    France

    Site Not Available

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