Treatment Protocol for Newky Diagnosed Adult Ph Positive ALL (LALPh2022)

PETHEMA Foundation

Status: Not yet enrolling

Conditions: Adult ALL; Lymphoblastic Leukemia; Philadelphia-Positive ALL

Treatments: Drug: Methotrexate; Drug: Fludarabine; Procedure: Total body irradiation; Drug: Cytarabine; Drug: Dexamethasone; Drug: Mercaptopurine; Drug: Cyclophosphamide; Procedure: allogeneic stem cell transplantation; Drug: Imatinib; Drug: Vincristine; Drug: Ponatinib

Study type: Observational

Funder types: Other

Identifiers

NCT06175702

PETHEMA LALPh2022

Details and patient eligibility

About

The goal of this prospective, multicenter, open observational study is to assess the efficacy and safety of the treatment for acute lymphoblastic leukemia Ph' positive adult patients with approved combinations of chemotherapy and tyrosine kinase inhibitor (TKI).

Efficay refers to the rate of Complete Molecular Response (BCR::ABL1/ABL1 ratio 0.01%) in eah treatment arm. Safety refers to measurement of i) Adverse events (AEs) and serious adverse events (SAEs) according to standard clinical and laboratory tests (hematology and chemistry, physical examination, vital sign measurements, and diagnostic tests), ii) incidence and degree of cytopenias and iii) incidence and degree of infections.

Low-dose chemotherapy will be given together with the TKI imatinib to patients of all ages as induction to remission phase.

Consolidation treatment will continue with low-dose chemotherapy with imatinib if the patient fullfills both criteria: to show a measurable residual disease (MRD) value lower than 0,01% at 3 month of therapy, and not showing IKZF1plus genetics Those patients have any of these 2 conditions will be considered high-risk patients and will recieve consolidation treatment intensification with low-dose chemotherapy plus ponatinib as TKI and allogeneic stem cell transplantation (allo SCT). The remaining patients (standard-risk) will receive maintenance chemotherapy together with imatinib or ponatinib and will not be submitted to alloSCT.

Full description

The goal of this prospective, multicenter, open observational study is to assess the efficacy and safety of the treatment for acute lymphoblastic leukemia Ph' positive adult patients with approved combinations of chemotherapy and tyrosine kinase inhibitor (TKI).

Efficay refers to the rate of Complete Molecular Response (BCR::ABL1/ABL1 ratio 0.01%) in each treatment arm. Safety refers to measurement of i) Adverse events (AEs) and serious adverse events (SAEs) according to standard clinical and laboratory tests (hematology and chemistry, physical examination, vital sign measurements, and diagnostic tests), ii) incidence and degree of cytopenias and iii) incidence and degree of infections.

Low-dose chemotherapy induction phase with vincristine (dose 1.5 mg/m2 at days 1, 8, 15 and 22), dexamethasone (dose 40 mg days 1-2, 8-9,15-16 and 22-23) will be given together with the TKI imatinib (dose 600 mg from day to consolidation start) to all patients of all ages as induction to remission phase.

Consolidation treatment will continue with low-dose chemotherapy with methotrexate (dose 1000 mg/m2 on day 1 with 24h infusion) and arabinoside of cytarabine (dose 1000 mg/m2/ days 1, 3 and 5 with 2h infusion) with imatinib (dose 600 mg per day) if the patient fullfills both criteria: i) to show a measurable residual disease (MRD) value <0,01% at 3 month of therapy, and ii) not showing IKZF1plus genetics.

Those patients having any of these 2 conditions will be considered high-risk patients and will recieve consolidation treatment intensification with low-dose chemotherapy (same as described above) plus ponatinib (dose 30 mg per day) as TKI and allogeneic stem cell transplantation (alloSCT) followed by maintenance chemotherapy with mercaptopurine (dose 50 mg/m2 on days 1 to 28) and methotrexate (dose 20 mg/m2 on days 1, 8, 15 and 22) together with imatinib (dose 600 mg per day) or ponatinib (15 mg per day) up to 5 years. The remaining patients (standard-risk) will receive maintenance chemotherapy (as described above) together with imatinib (dose 600 mg per day) or ponatinib (15 mg per day) up to 5 years and will not be submitted to alloSCT.

Enrollment: 150 estimated patients

Sex: All

Ages: 18+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

1. Patients with de novo avute lymphoblastic leukeima (ALL) Philadelphia chromosome-positive (BCR::ABL1) aged ≥18 years.
2. CML blast crisis will be included. These patients will always receive transplantation, regardless of the molecular response or the genetic risk, following the recommendations of the SEHH CML group (Chronic Myleoid Leukemia Group from the Spanish Society of Hematology).
3. Performance status 0-2; patients with performance status>2 attributable to ALL can be included.
4. Patients without functional alteration of organs; liver function: total bilirubin, GOT, GPT, GGT and alkaline phosphatase less than 3 times the upper limit of the normal range of the laboratory; renal function: serum creatinine <2 mg/dl or creatinine clearance > 30 ml/min (except altered renal function attributable to ALL); normal heart function: EF ventricular > 50%; absence of severe chronic respiratory disease. In case that the alterations are secondary to the disease, it is at the discretion of the physician to determine if the patient can be included in the study.

Exclusion criteria

1. Any other subtype of ALL.
2. Patients with chronic liver disease.
3. Patients with chronic respiratory failure.
4. Renal failure not due to ALL.
5. Lipase and amylase>1.5× ULN.
6. Patients with positive HIV serology.
7. Serious neurological alterations not due to ALL.
8. Serious general condition condition (grades 3 or 4 on the WHO scale) not attributable to ALL.
9. Pregnant or breastfeeding women.
10. Impaired cardiac function (defined by an ejection fraction less than 50%), any clinically significant active or uncontrolled cardiovascular condition, uncontrolled hypertension, arrhythmias, ischemic cardiovascular or neurological events, deep vein thrombosis, pulmonary thromboembolism, history of acute pancreatitis in the year before diagnosis of ALL or history of chronic pancreatitis and triglycerides >450 mg/dL.

Trial design

150 participants in 2 patient groups

Complete molecular response and low risk genetics

Description:

Patients in Complete Remission and Complete Molecular Response at end Induction therapy will receive consolidation with imatinib (or dasatinib if intolerance) and chemotherapy, unless they show the IKZF1plus genotype, which will imply switch to the not complete molecular response or high-risk genetics (IKZ1plus) group.

Treatment:

Drug: Methotrexate

Drug: Mercaptopurine

Drug: Imatinib

Drug: Vincristine

Drug: Cytarabine

Drug: Dexamethasone

Not complete molecular response or high-risk genetics (IKZF1plus)

Description:

Patients in Complete Remission and without Complete Molecular Response at the end of Induction therapy or showing the IKZF1plus genotype, will receive consolidation treatment with ponatinib and chemotherapy followed by allogeneic stem cell transplantation and maintenance therapy.

Treatment:

Procedure: allogeneic stem cell transplantation

Drug: Cyclophosphamide

Drug: Methotrexate

Drug: Mercaptopurine

Drug: Imatinib

Drug: Fludarabine

Procedure: Total body irradiation

Drug: Vincristine

Drug: Ponatinib

Drug: Cytarabine

Drug: Dexamethasone