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Interfant-21

International collaborative treatment protocol for infants under one year with KMT2A-rearranged acute lymphoblastic leukemia or mixed phenotype acute leukemia - Interfant-21

Status
Recruiting
Phases
Phase 3
Study type
Interventional
Source
JPRN
Registry ID
JPRN-jRCTs051230126
Enrollment
16
Registered
2023-11-10
Start date
2024-09-06
Completion date
Unknown
Last updated
2026-09-14

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

acute lymphoblastic leukemia infant acute lymphoblastic leukemia

Interventions

Phase 1 Induction The first five weeks of your child's treatment are called Induction. In this phase a combination of drugs is given with the aim to destroy as many leukemia cells as possible. How int

Sponsors

Miyamura Takako
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Patients with newly diagnosed B- precursor ALL or B-cell MPAL according to the WHO classification of tumours of haematopoietic and lymphoid tissues (revised 4th edition 2017), with KMT2A-rearrangement. 2. -<365 days of age at the time of diagnosis of ALL. 3. Written informed consent of the parents or other legally authorized guardian of the patient according to local law and regulations.

Exclusion criteria

Exclusion criteria: 1. KMT2A-wildtype patients. 2. Multilineage MPAL 3. T-ALL. 4. Age > 365 days at the time of diagnosis. 5. Down syndrome. 6. Relapsed ALL. 7. Treatment with systemic corticosteroids (equivalent prednisone >10 mg/m2/day) for more than one week and/or any chemotherapeutic agent in the 4-week interval prior to diagnosis. Patients who received corticosteroids by aerosol are eligible for the study. Additional exclusion criteria for blinatumomab: 1. CD19 negative B-precursor ALL at diagnosis 2. CNS involvement (CNS2/CNS3 status) at the EOI. Patients with CNS disease at the time of diagnosis are eligible if CNS1 status is achieved prior to the start of the first blinatumomab cycle (lumbar puncture at ~day 33 of induction). 3. Proven hypersensitivity to the active substance or any of the excipients in blinatumomab. 4. Patients who have received a live vaccine 28 days prior to blinatumomab administration or plan to receive a live vaccine prior to B-cell recovery after the last dose of blinatumomab. If exclusion criteria for blinatumomab are met, the patient should be treated according to the protocol but without blinatumomab.

Design outcomes

Primary

MeasureTime frame
The primary objective is to improve the outcome (in terms of event-free survival (EFS) as the primary endpoint) of newly diagnosed KMT2A-rearranged (KMT2A-r) infant acute lymphoblastic leukemia (ALL) compared with the historical results of the Interfant-06 protocol.

Secondary

MeasureTime frame
Secondary study objectives 1.To estimate overall survival (OS) and compare it with corresponding historical results of the Interfant-06 protocol, in the whole study and by risk group. 2.To determine outcome (in terms of secondary endpoint 2) according to risk group and compare it with corresponding historical results of the Interfant-06 protocol. 3.To determine outcome (in terms of secondary endpoint 3) taking into account the protocol-specific definition of resistance. 4.To assess the response to different treatment phases in term of minimal residual disease (MRD) response. 5.To evaluate the incidence of CD19 negative relapses 6.To evaluate the incidence of myeloid lineage switches 7.To describe the toxicity associated to each treatment phase 8.To describe long term cardiotoxicity 9.To evaluate survival after relapse, overall and by risk group. Exploratory study objectives 1.Assessment of prognostic factors (e.g. age at diagnosis, white blood cell count at diagnosis (WBC), immunophenotype, type of KMT2A rearrangement, MRD, etc.) 2.To evaluate events after first relapse 3.To evaluate the concordance of MRD assessments by IG-TR PCR and KMT2A PCR, flow cytometry, and Next Generation Sequencing (NGS) (performed in some centers). 4. To determine outcome of patients who meet the blinatumomab exclusion criteria (see section 3.2 of the protocol). The objectives of the sub-studies are detailed in the sub-study protocols.

Countries

Argentina, Australia, Austria, Belgium, Brazil, Chile, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Israel, Italy, Japan, Lithuania, Netherlands, New Zealand, Norway, Portugal, Republic of Ireland, Saudi Arabia, Slovak Republic, Spain, Sweden, Switzerland

Contacts

Public ContactTakako Miyamura

The University of Osaka Hospital

miyamu@ped.med.osaka-u.ac.jp+81-6-6879-5111

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Sep 19, 2026