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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.

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.

Imatinib

1000 mg/m2/ on days 1, 3 and 5 of consolidation with 2h infusion

1000 mg/m2 on day 1 of consolidation with 24h infusion; and 20 mg/m2 on days 1, 8, 15 and 22 of maintenance

15 mg per day from consolidation start up to 5 years

Allogeneic stem cell transplantation from hematpoietic stem cells progenitors of familiar or not familiar origin. Cord blood transplantation can also be done.

allogeneic stem cell transplantation

Fractionated dose with total dose of 12 Gy between days -4 and -1 of allogeneic stem cell transplantation (alloSCT)

Total body irradiation

60 mg/kg on days -6 and -5 before alloSCT

30 mg/m2 intravenous on days -7, -6, -5 y -4 before alloSCT (alternative to cyclophosphamide)

Josep M Ribera Santasusana, MD

Anna Torrent, MD

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.

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.

Treatment Protocol for Newky Diagnosed Adult Ph Positive ALL

Treatment Protocol for Newky Diagnosed Adult Ph-Chromosome Positive (BCR::ABL1) Acute Lymphoblastic Leukemia (LALPh2022)

Improvement of OS compared to that observed in the previous protocols (PETHEMA LALPh08 and LALOPh07).

Change the CMR rate at the end of consolidation with the administration of ponatinib to those patients who do not achieve CMR at the end of induction or have high-risk genetics (IKZF1plus).

Limit the number of alloTPH to any of the following:

* Lack of CMR at the end of consolidation.
* High-risk genetics (IKZF1plus).

To assess the number of non-transplanted participants who receive maintenance treatment.

To assess the number of transplanted patients who receive TKI maintenance treatment preemptively (upon of MRD\>0.01%).

Assess the frequency of cytopenias and degree. Assess the frequency of infections and degree. Assess the frequency of vascuar events and degree. Assess the frequency of hepatic events and degree. Assess the frequency of pancreatic events and degree.

PETHEMA Foundation

Spots Global Cancer Trial Database for philadelphia (bcr::abl1) positive