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A study protocol for children and young adults 0-45 years of age with newly diagnosed acute lymphoblastic leukaemia (ALL)

ALLTogether1– A Treatment study protocol of the ALLTogether Consortium for children and young adults (0-45 years of age) with newly diagnosed acute lymphoblastic leukaemia (ALL) - ALLTogether1

Status
Active, not recruiting
Phases
Phase 3
Study type
Interventional
Source
EU CTR
Registry ID
EUCTR2018-001795-38-DE
Enrollment
6430
Registered
2019-11-07
Start date
2020-05-15
Completion date
Unknown
Last updated
2024-10-21

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

Conditions

Acute lymphoblastic leukaemia (ALL) MedDRA version: 21.0 Level: LLT Classification code 10000844 Term: Acute lymphoblastic leukaemia System Organ Class: 100000004864

Interventions

Sponsors

Karolinska University Hospital
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Patients newly diagnosed with T-lymphoblastic (T-cell) or B-lymphoblastic precursor (BCP) leukaemia (ALL) according to the WHO-classification of Tumours of Haematopetic and Lymphoid Tissues (Revised 4th edition 2017) and with a diagnosis confirmed by an accredited laboratory at a participating paediatric oncology or adult haematology centre. 2. Age = 0 days and =65 years) no F.1.3.1 Number of subjects for this age range 0

Exclusion criteria

Exclusion criteria: 1. Age 45 years at diagnosis. 3. Patients with a previous malignant diagnosis (ALL as a second malignant neoplasm - SMN). 4. Relapse of ALL. 5. Patients with mature B-ALL (as defined by Surface Ig positivity or documented presence of one of the t(8;14), t(2;8), t(8;22) translocations and breakpoint as in B-ALL). 6. Patients with Ph-positive ALL (documented presence of t(9;22)(q34;q11) and/or of the BCR/ABL fusion transcript). These patients will be transferred to an adequate trial for t(9;22) if available. 7. ALL prone syndromes (e.g. Li-Fraumeni syndrome, germline ETV6 mutation), except for Down syndrome. Exploration for such ALL prone syndromes is not mandatory. 8. Treatment with systemic corticosteroids (>10mg/m2/day) for more than one week and/or other chemotherapeutic agents in a 4-week interval prior to diagnosis (pre-treatment). 9. Pre-existing contraindications to any treatment according to the ALLTogether protocol (constitutional or acquired disease prior to the diagnosis of ALL preventing adequate treatment). 10. Any other disease or condition, as determined by the investigator, which could interfere with the participation in the study according to the study protocol, or with the ability of the patients to cooperate and comply with the study procedures. 11. Women of childbearing potential who are pregnant at the time of diagnosis. 12. Women of childbearing potential and fertile men who are sexually active and are unwilling to use adequate contraception during therapy. Efficient birth control is required, see section 17.8. 13. Female patients, who are breast-feeding. 14. Essential data missing from the registration of characteristics at diagnosis (in consultation with the protocol chair). 15. For each intervention/randomisation an additional set of exclusion-criteria is provided.

Design outcomes

Primary

MeasureTime frame
Main Objective: The primary objective of ALLTogether is to improve survival and quality of survival in infants, children and young adults with acute lymphoblastic leukaemia by a number of interventions that will be tested in a randomised fashion, compared with well-defined control-populations within the Protocol or explored in a non-randomised fashion either to obtain baseline information regarding characteristics, leukaemia-specific outcomes and toxicity or to be compared with well defined historical controls. A sub-group of patients will be identified that may benefit from novel (CAR-T) immunotherapy. ;Secondary Objective: •To investigate if SR-& IR-low patients can benefit from deintensification of therapy. Overall survival(OS) and leukaemia outcomes are balanced against toxicity including relapse treatment. Quality of life(QoL) measurements will ascertain and compare the burden of therapy •To ascertain if addition of Inotuzumab(InO) or low-dose 6-thioguanine (TEAM) impacts OS or other adverse outcomes and to assess if the toxicity induced by InO/TEAM is significant & acceptable. QoL measurements will assess the burden of the experimental intensifications •For patients treated with TKI, baseline data regarding OS, adverse outcomes, toxicity and QoL will be collected for future reference •To ascertain if replacing conventional chemotherapy with blinatumomab can improve leukaemic outcomes and reduce toxicity in Down patients •For patients defined as eligible for CAR-T survival, specific leukaemic adverse events, toxicity & QoL resulting from conventional HR-therapy & CAR-T cell treatment is measured;Primary end point(s): - The primary endpoint for the whole protocol (compared with the legacy protocols of the participating study-groups forming the consortium) is event-free survival (EFS) – as defined in the protocol. - The primary endpoint for the randomised interventions is disease-free survival (DFS) – as defined in the protocol. - The primary endpoint for

Secondary

MeasureTime frame
Timepoint(s) of evaluation of this end point: Most efficacy-measures will be ascertained as 5-year estimates. In the R3-InO sub-protocol, the minimum follow-up for these measures will be 2 years from last inclusion, for all other sub-protocols, the minimum follow-up will be 5 years from last inclusion. In the ALLTogether1 DS sub-protocol, the cumulative incidence of blinatumomab refractory disease and cumulative incidence of Protocol Therapy Failure will be evaluable earlier, at approximately six months after last inclusion. Incidence, rates and frequencies of the toxicity end-points will be assessed at the end of therapy for all toxicities except obesity in R2, which is assessed finally 5 years after cessation of therapy.;Secondary end point(s): Main study secondary end-points The most important secondary outcome is overall survival (OS). Additional secondary measures of antileukaemic efficacy are: rate of -death during induction, -resistant disease, cumulative incidence of: -relapse (ciR), -death in first complete remission (ciDCR1) and -second malignancy (ciSMN). Over- and under-treatment events will also be combined into resulting treatment-related mortality (TRM) and leukaemia specific mortality (LSM) rates. Since over-treatment also includes cured patients who suffer potentially permanent side-effects, data will be collected regarding the incidence of some adverse events of special interest. De-escalation of therapy may also result in relapses that have to be rescued with allogeneic stem-cell transplant (allo-SCT), which is associated with serious permanent side effects. Therefore, the incidence of allo-HSCT in CR1 and CR2 will also be measured. An important aspect of evaluation of the quality of survival is measurement of quality of life (QoL). The whole protocol, as well as each of the non-randomised and randomised interventions will also be evaluated by measurements of quality of life (QoL). QoL will be measured by EQ5D-based instruments before and af

Countries

Belgium, Denmark, Finland, France, Germany, Iceland, Ireland, Lithuania, Netherlands, Norway, Portugal, Sweden, United Kingdom

Contacts

Public ContactKarin Flood

Karolinska Institutet

karin.flood@ki.se0046703214922

Outcome results

None listed

Source: EU CTR (via WHO ICTRP) · Data processed: Feb 17, 2026