Main info

Identifier:

HOVON 156 AML / AMLSG 28-18

Sponsor:

HOVON

Working group party:

Leukemia

Stage:

1st Line

Echelon:

Level C-HIC&C-SCT

Included patients:

777

(of 777)

Active sites:

190

(of 200)

Title:

A phase 3, multicenter, open-label, randomized, study of Gilteritinib versus Midostaurin in combination with induction and consolidation therapy followed by one-year maintenance in patients with newly diagnosed Acute Myeloid Leukemia (AML) or Myelodysplastic syndromes with excess blasts-2 (MDS-EB2) with FLT3 mutations eligible for intensive chemotherapy.

Timeline

News

Flow

Details

Phase:

Prospective randomized Phase III study

Monitoring Type:

Study Specific

Objectives:

Primary study objective

• To compare event-free survival (EFS) between gilteritinib and midostaurin in combination with induction and consolidation therapy followed by one-year maintenance therapy in patients with newly diagnosed acute myeloid leukemia (AML), with a FLT3 gene mutation eligible for intensive chemotherapy.

Key secondary study objectives

• To determine if treatment with gilteritinib, as compared to midostaurin, prolongs overall survival (OS) in the AML patient group.
• To compare complete remission (CR) rate after induction therapy (i.e., CR as best response during or at completion of induction) for treatment including gilteritinib vs. midostaurin in the AML patient group.

Other secondary study objectives

• To compare CR and CR with incomplete hematologic recovery (CRi) rates after induction cycle 1 and after induction cycle 2 for treatment including gilteritinib vs. midostaurin in the AML patient group.
• To compare relapse-free survival (RFS), cumulative incidence of relapse (CIR) and death (CID) after CR for treatment including gilteritinib vs. midostaurin in the AML patient group.
• To evaluate minimal residual disease (MRD) status at sequential time points throughout treatment and CRMRD- rates between treatment including gilteritinib vs. midostaurin, using molecular and/or flow cytometric techniques in the AML patient group.
• To assess the safety and tolerability of treatment including gilteritinib vs. midostaurin in the AML patient group.
• To assess the time to hematopoietic recovery (ANC 0.5 and 1.0 x 109/L; platelets 50 and 100 x 109/L) after each chemotherapy treatment cycle in the AML patient group.
• To assess the percentage of patients undergoing an allogeneic stem cell transplant (allo-SCT) in the AML patient group.
• To determine quality of life (QoL) during maintenance treatment with gilteritinib vs. midostaurin in the AML patient group.

Exporatory objectives

• To evaluate the above mentioned endpoints (section 6.1, 6.2 and 6.3) between gilteritinib and midostaurin in combination with induction and consolidation therapy followed by oneyear maintenance therapy in subjects with Myelodysplastic Syndromes (MDS) with excess blasts-2 (EB2) with a FLT3 gene mutation eligible for intensive chemotherapy.

Eligibility

Inclusion Criteria:

• Age ≥18 years
• Newly diagnosed AML or MDS with excess of blasts-2 (EB2) defined according to WHO criteria (appendix A), with centrally documented FLT3 gene mutation (either TKD or ITD or both). AML may be secondary to prior hematological disorders, including MDS, and/or therapy-related. Patients may have had previous treatment with erythropoiesis stimulating agents (ESA) and/or hypomethylating agents (HMAs) for MDS. ESA and HMAs have to be stopped at least four weeks before registration
• FLT3 mutation as assessed by DNA fragment analysis PCR for FLT3-ITD and sequencing for FLT3-TKD. FLT3-ITD positivity is defined as a FLT3-ITD / FLT3-WT ratio of ≥ 0.05 (5%). FLT3-TKD positivity is defined as a variant allelele frequency (VAF = FLT3 TKD / (FLT3 WT + FLT3 TKD)) ≥ 0.05 (5%))
• Considered to be eligible for intensive chemotherapy
• Patient is suitable for oral administration of study drug
• WHO/ECOG performance status ≤ 2
• Adequate hepatic function as evidenced by
  • Serum total bilirubin ≤ 2.5 × upper limit of normal (ULN) unless considered due to leukemic involvement following written approval by the (co) Principal Investigator
  • Aspartate aminotransferase (AST), alanine aminotransferase (ALT), and alkaline phosphatase (ALP) ≤ 3.0 × ULN, unless considered due to leukemic involvement following written approval by the (co) Principal Investigator
• Adequate renal function as defined by creatinine clearance > 40 mL/min based on the Cockroft-Gault glomerular filtration rate (GFR)
• Written informed consent
• Patient is capable of giving informed consent
  • Female patient must either:
  • Be of nonchildbearing potential:
  • Postmenopausal (defined as at least 1 year without any menses) prior to screening, or
  • Documented surgically sterile or status posthysterectomy (at least 1 month prior to screening)
  • Or, if of childbearing potential,
    • Agree not to try to become pregnant during the study and for 6 months after the final study drug administration
    • And have a negative urine or serum pregnancy test at screening
    • And, if heterosexually active, agree to consistently use highly effective contraception per locally accepted standards in addition to a barrier method starting at screening and throughout the study period and for 6 months after the final study drug administration.
• Highly effective forms of birth control include:
• Consistent and correct usage of established hormonal contraceptives that inhibit ovulation,
• Established intrauterine device (IUD) or intrauterine system (IUS),
• Bilateral tubal occlusion,
• Vasectomy (A vasectomy is a highly effective contraception method provided the absence of sperm has been confirmed. If not, an additional highly effective method of contraception should be used.)
• Male is sterile due to a bilateral orchiectomy.
• Sexual abstinence is considered a highly effective method only if defined as refraining from heterosexual activity during the entire period of risk associated with the study drug. The reliability of sexual abstinence needs to be evaluated in relation to the duration of the clinical study and the preferred and usual lifestyle of the patient.
• List is not all inclusive. Prior to enrollment, the investigator is responsible for confirming patient will utilize highly effective forms of birth control per locally accepted standards during the protocol defined period.
  • Female patient must agree not to breastfeed starting at screening and throughout the study period, and for 2 months and 1 week after the final study drug administration.
  • Female patient must not donate ova starting at screening and throughout the study period, and for 6 months after the final study drug administration.
• Male patient and their female partners who are of childbearing potential must be using highly effective contraception per locally accepted standards in addition to a barrier method starting at screening and continue throughout the study period and for 4 months and 1 week after the final study drug administration.
• Male patient must not donate sperm starting at screening and throughout the study period and for 4 months and 1 week after the final study drug administration.
• Patient agrees not to participate in another interventional study while on treatment

Exclusion Criteria:

• Prior chemotherapy for AML or MDS-EB2 (with the exception of ESA and HMA). Hydroxyurea is allowed for the control of peripheral leukemic blasts in patients with leukocytosis (e.g., white blood cell [WBC] counts > 30 x 109/L)
• Acute promyelocytic leukemia (APL) with PML-RARA or one of the other pathognomonic variant fusion genes/chromosome translocations
• Blast crisis after CML
• Patient requires treatment with concomitant drugs that are strong inducers of cytochrome P450 (CYP) 3A (Appendix I)
• Breast feeding as of the start of study treatment
• Active infection, including hepatitis B or C or HIV infection that is uncontrolled at randomization. An infection controlled with an approved or closely monitored antibiotic/antiviral/antifungal treatment is allowed.
• Patients with a currently active second malignancy. Patients are not considered to have a currently active malignancy if they have completed therapy and are considered by their physician to be at less than 30% risk of relapse within one year. However, patients with the following history/concurrent conditions are allowed:
  • Basal or squamous cell carcinoma of the skin;
  • Carcinoma in situ of the cervix;
  • Carcinoma in situ of the breast;
  • Incidental histologic finding of prostate cancer
• Significant active cardiac disease within 6 months prior to the start of study treatment, including:
  • New York Heart Association (NYHA) Class III or IV congestive heart failure;
  • Myocardial infarction;
  • Unstable angina and/or stroke;
  • Left ventricular ejection fraction (LVEF) < 40% by ECHO or MUGA scan obtained within 28 days prior to the start of study treatment
• QTc interval using Fridericia’s formula (QTcF) ≥ 450 msec (average of triplicate determinations) or other factors that increase the risk of QT prolongation or arrhythmic events (e.g., heart failure, family history of long QT interval syndrome). Prolonged QTc interval associated with bundle branch block or pacemaking is permitted with written approval of the (co) Principal Investigator.
• Patient with hypokalemia and hypomagnesemia at screening (defined as values below LLN)
• Dysphagia, short-gut syndrome, gastroparesis, or other conditions that limit the ingestion or gastrointestinal absorption of orally administered drugs
• Clinical symptoms suggestive of active central nervous system (CNS) leukemia or known CNS leukemia. Evaluation of cerebrospinal fluid (CSF) during screening is only required if there is a clinical suspicion of CNS involvement by leukemia during screening
• Immediate life-threatening, severe complications of leukemia such as uncontrolled bleeding and/or disseminated intravascular coagulation
• Any other medical or psychological condition deemed by the Investigator to be likely to interfere with a patient’s ability to give informed consent or participate in the study
• Any psychological, familial, sociological or geographical condition potentially hampering compliance with the study protocol and follow-up schedule

Registration Details

Participating Sites

= Active hospitals

= Inactive hospitals