Active, not recruitingNCT03117751Updated Jun 17, 2026

Total Therapy XVII for Newly Diagnosed Patients With Acute Lymphoblastic Leukemia and Lymphoma

A Phase 2/3 interventional study of Prednisone and Vincristine in Acute Lymphoblastic Leukemia and Acute Lymphoblastic Lymphoma, sponsored by St. Jude Children's Research Hospital. Active, not recruiting at 8 sites in 2 countries. Open to participants aged 1 Year to 18 Years. Per ClinicalTrials.gov, last updated 2026-06-17.

Sponsored by St. Jude Children's Research Hospital · Phase 2/3, Interventional, and Treatment

Phase: Phase 2/3
Study type: Interventional
Enrollment: 790
Allocation: Randomized
Ages: 1 Year to 18 Years
Sex: All

Study summary

The overarching objective of this study is to use novel precision medicine strategies based on inherited and acquired leukemia-specific genomic features and targeted treatment approaches to improve the cure rate and quality of life of children with acute lymphoblastic leukemia (ALL) and acute lymphoblastic lymphoma (LLy).

Primary Therapeutic Objectives:

To improve the event-free survival of provisional standard- or high-risk patients with genetically or immunologically targetable lesions or minimal residual disease (MRD) ≥ 5% at Day 15 or Day 22 or ≥1% at the end of Remission Induction, by the addition of molecular and immunotherapeutic approaches including tyrosine kinase inhibitors or chimeric antigen receptor (CAR) T cell / blinatumomab for refractory B-acute lymphoblastic leukemia (B-ALL) or B-lymphoblastic lymphoma (B-LLy), and the proteasome inhibitor bortezomib for those lacking targetable lesions.
To improve overall treatment outcome of T acute lymphoblastic leukemia (T-ALL) and T-lymphoblastic lymphoma (T-LLy) by optimizing pegaspargase and cyclophosphamide treatment and by the addition of new agents in patients with targetable genomic abnormalities (e.g., activated tyrosine kinases or JAK/STAT mutations) or by the addition of bortezomib for those who have a poor early response to treatment but no targetable lesions, and by administering nelarabine to T-ALL and T-LLy patients with leukemia/lymphoma cells in cerebrospinal fluid at diagnosis or MRD ≥0.01% at the end of induction.
To determine in a randomized study design whether the incidence and/or severity of acute vincristine-induced peripheral neuropathy can be reduced by decreasing the dosage of vincristine in patients with the high-risk CEP72 TT genotype or by shortening the duration of vincristine therapy in standard/high-risk patients with the CEP72 CC or CT genotype.

Secondary Therapeutic Objectives:

To estimate the event-free survival and overall survival of children with ALL and to assess the non-inferiority of TOTXVII compared to the historical control given by TOTXVI.
To estimate the event-free survival and overall survival of children with LLy when ALL diagnostic and treatment approaches are used.
To evaluate the efficacy of blinatumomab in B-ALL patients with end of induction MRD ≥0.01% to \<1% and those (regardless of MRD level or TOTXVII risk category) with the genetic subtypes of BCR-ABL1, ABL-class fusion, JAK-STAT activating mutation, hypodiploid, iAMP21, ETV6-RUNX1-like, MEF2D, TCF3-HLF, or BCL2/MYC or with Down syndrome, by comparing event-free survival to historical control from TOTXVI.
To determine the tolerability of combination therapy with ruxolitinib and Early Intensification therapy in patients with activation of JAK-STAT signaling that can be inhibited by ruxolitinib and Day 15 or Day 22 MRD ≥5%, Day 42 MRD ≥1%, or LLy patients without complete response at the End of Induction and all patients with early T cell precursor leukemia.

Biological Objectives:

To use data from clinical genomic sequencing of diagnosis, germline/remission and MRD samples to guide therapy, including incorporation of targeted agents and institution of genetic counseling and cancer surveillance.
To evaluate and implement deoxyribonucleic acid (DNA) and ribonucleic acid (RNA) sequencing-based methods to monitor levels of MRD in bone marrow, blood, and cerebrospinal fluid.
To assess clonal diversity and evolution of pre-leukemic and leukemic populations using DNA variant detection and single-cell genomic analyses in a non-clinical, research setting.
To identify germline or somatic genomic variants associated with drug resistance of ALL cells to conventional and newer targeted anti-leukemic agents in a non-clinical, research setting.
To compare drug sensitivity of ALL cells from diagnosis to relapse in vitro and in vivo and determine if acquired resistance to specific agents is related to specific somatic genome variants that are not detected or found in only a minor clone at initial diagnosis.

Supportive Care Objectives

To conduct serial neurocognitive monitoring of patients to investigate the neurocognitive trajectory, mechanisms, and risk factors.
To evaluate the impact of low-magnitude high frequency mechanical stimulation on bone mineral density and markers of bone turnover.

There are several Exploratory Objectives.

Read the detailed description

Participants will be classified into one of three categories (low-, standard-, or high-risk) based on the presenting age, leukocyte count/lymphoma staging, presence or absence of CNS-3 status or testicular disease, immunophenotype, molecular genetics, DNA index, and early response to therapy.

Treatment will consist of three main phases: Remission Induction, Consolidation, and Continuation. Early Intensification therapy will be given prior to Consolidation to patients with provisional standard-risk or high-risk ALL/LLy or any provisional low-risk patients with Day 15 MRD ≥1% as well as provisional low-risk LLy patients who do not obtain complete response at the end of Induction. Patients with mixed phenotype acute leukemia (MPAL) are treated by using the same treatment stratification used in ALL although analysis is performed separately from ALL or LLy cohorts.

Brief outline of treatment plan:

Patients will be assigned to treatment based on risk group: Low-Risk, Standard-Risk and High-Risk and cell type (T or B cell).

Remission Induction initially consists of prednisone (28 days), vincristine (4 weekly doses), daunorubicin (1 to 3 weekly doses), and pegaspargase 1 dose for all patients and 2 doses for those with Day 15 MRD 1% or higher. The second part (given over 2 weeks and overlapping with the last week of the first part of induction) consists of cyclophosphamide, cytarabine, and mercaptopurine combinations. Dasatinib will be added for patients with Ph+ and Ph-like ABL-class fusions and bortezomib will be given to patients with no targetable lesions and Day 15 or Day 22 minimal residual disease (MRD) ≥ 5% on Days 29 and 32.

Early Intensification will be given prior to Consolidation to patients with provisional standard-risk or high-risk ALL/LLy or any provisional low-risk patients with Day 15 MRD ≥1% as well as provisional low-risk LLy patients who do not obtain complete response at the end of Induction. For patients with Ph-like ALL that is targetable with JAK inhibitor and Day 15 or Day 22 MRD level ≥5% or end of Remission Induction ≥1% as well as all patients with early T cell precursor (ETP) ALL and T/M MPAL, ruxolitinib will be used. This includes, but is not limited to CRLF2, JAK2, and EPOR rearrangements and sequence/structural changes in JAK1/2, TYK2, IL7R, and SH2B3. Ruxolitinib will be added in LLy patients with activation of JAK-STAT signaling that can be inhibited by ruxolitinib whose responses do not qualify complete response at the end of Remission Induction. Dasatinib will continue for patients with ABL-class fusions. Bortezomib will be added for patients with no targetable lesions and Day 15 or Day 22 MRD ≥ 5% or LLy patients without complete response at the End of Induction.

Consolidation Treatment will consist of high dose methotrexate (HDMTX) (every other week for 4 doses); daily mercaptopurine and IT chemotherapy on the same dates of HDMTX. Dasatinib will continue for patients with ABL-class fusions. Ruxolitinib will continue for patients with activation of JAK-STAT signaling that can be inhibited by ruxolitinib and Day 15 or Day 22 MRD ≥5% or Day 42 MRD ≥1% (or for LLy patients who do not qualify complete response at the end of Remission Induction) and all cases with ETP ALL and T/M MPAL.

Immunotherapy: CAR T-cell therapy will be considered for High-risk B-ALL and B-LLy patients. Blinatumomab will be given to patients with Standard-risk B-ALL and B-LLy with residual disease at the end of induction and High-risk B-ALL and B-LLy patients who are not able to receive CAR T-cell therapy. Blinatumomab is also given to patients with the following genetic subtypes (BCR-ABL1, ABL-class fusion, JAK-STAT activating mutation, hypodiploid, iAMP21, ETV6-RUNX1-like, MEF2D, TCF3/HLF, or BCL2/MYC) or with Down syndrome, regardless of MRD level and/or Total 17 risk category.

Reintensification therapy will be offered to certain High-risk patients with persistent MRD after Immunotherapy (B-ALL and B-LLy) or Early Intensification (T-ALL and T-LLy), or those who cannot receive Immunotherapy.

Continuation Treatment will consist of 120 weeks of risk-directed therapy. Dasatinib will continue in patients with ABL-class fusion. Ruxolitinib will continue in patients with activation of JAK-STAT signaling that can be inhibited by ruxolitinib and Day 15 or Day 22 MRD ≥5% or Day 42 MRD ≥1% (or for LLy patients who do not qualify complete response at the end of Remission Induction) and all cases with ETP ALL. T-ALL and T-LLy patients with leukemia/lymphoma cells in cerebrospinal fluid at diagnosis or MRD ≥0.01% at the end of Induction will receive nelarabine. ALL/LLy Patients with the CEP72 rs904627T/T genotype (16% of patients) will be randomized (unblinded design except those who evaluate neuropathies) to receive either 1.5 mg/m2 or 1 mg/m2 of vincristine after Continuation Week 1. Patients in low- risk will complete vincristine in Week 49 and those in standard/high-risk will complete in Week 101. Standard/high-risk patients with either a CEP72 rs904627 C/T or C/C genotype (84% of patients) will be randomized to receive vincristine and dexamethasone pulses through Week 49 of Continuation Treatment or through Week 101 of Continuation Treatment. Low-risk patients will complete vincristine in Week 49.

Intrathecal therapy is given throughout the treatment. The number of intrathecal therapy is based on the risk factors of central nervous system relapse.

Conditions studied

Acute Lymphoblastic Leukemia
Acute Lymphoblastic Lymphoma

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Keywords

Leukemia
Lymphoma
Pediatric
B-Cell
T-Cell

In context

Precursor Cell Lymphoblastic Leukemia-Lymphoma

2,061 studies on the registry are indexed under Precursor Cell Lymphoblastic Leukemia-Lymphoma; 490 are open to participants now.

This study's enrollment of 790 is above the median of 40 across 1,653 interventional studies indexed under Precursor Cell Lymphoblastic Leukemia-Lymphoma.

Browse Precursor Cell Lymphoblastic Leukemia-Lymphoma studies →

Lead sponsor

St. Jude Children's Research Hospital is the lead sponsor of 434 studies on the registry; 99 are open to participants now.

Of its 60 completed or terminated interventional studies of FDA-regulated products, 35 (58%) have results posted.

Counted across the registry records on this site, refreshed daily.

Who can participate

Ages eligible: 1 Year to 18 Years
Sexes eligible: All
Accepts healthy volunteers: No

Inclusion criteria

Diagnosis of B- or T-ALL or LLy by immunophenotyping:
LLy participants must have \< 25% tumor cells in bone marrow and peripheral blood by morphology and flow cytometry. If any of these show ≥25% blasts, patient will be considered to have leukemia. Patients with MPAL are eligible.
Age 1-18 years (inclusive).
No prior therapy, or limited prior therapy, including systemic glucocorticoids for one week or less, one dose of vincristine, emergency radiation therapy (e.g., to the mediastinum, head and neck, orbit, etc.) and one dose of intrathecal chemotherapy.
Written, informed consent and assent following Institutional Review Board (IRB), National Cancer Institute (NCI), Food and Drug Administration (FDA), and Office of Human Research Protections (OHRP) Guidelines.

Exclusion criteria

Exclusion Criteria:

Participants who are pregnant or lactating. Males or females of reproductive potential must agree to use effective contraception for the duration of study participation.
Inability or unwillingness of research participant or legal guardian/representative to give written informed consent.

Study design

Phase: Phase 2 / Phase 3
Primary purpose: Treatment
Allocation: Randomized
Intervention model: Parallel assignment
Masking: Single (Outcomes assessor)
Enrollment: 790 participants (actual)

Study arms

Experimental
B-ALL and B-LLy, Low-risk
Patients with low-risk B ALL and LLy will have Induction (6 weeks), Consolidation (8 weeks), and Continuation (120 weeks). During Remission Induction therapy, prednisone dose is 40mg/m\^2 and 1-2 doses of daunorubicin (based on day 8 peripheral blood MRD in patients with ETV6-RUNX1 or hyperdiploid) are given. Dasatinib is given for patients with ABL-class fusion. Blinatumomab will be given to patients with certain genetic subtypes and those with Down syndrome. Interventions: Prednisone, vincristine, daunorubicin, pegaspargase (or Erwinase®, Rylaze™ or Calaspargase pegol), cyclophosphamide, cytarabine, mercaptopurine, dasatinib, thioguanine, methotrexate, dexamethasone, blinatumomab.
Drug: Prednisone · Drug: Vincristine · Drug: Daunorubicin · Drug: Pegaspargase · Drug: Erwinase® · Drug: Cyclophosphamide · Drug: Cytarabine · Drug: Mercaptopurine · Drug: Dasatinib · Drug: Methotrexate · Drug: Blinatumomab · Drug: Dexamethasone · Drug: Thioguanine · Drug: Asparaginase Erwinia chrysanthemi (recombinant)-rywn · Drug: Calaspargase Pegol
Experimental
B-ALL and B-LLy, Standard-risk
Induction (6wks), Early Intensification (4wks), Consolidation (8wks) and Continuation (120 wks). Remission Induction: Prednisone dose is 40mg/m\^2 and 2 doses daunorubicin are given. Dasatinib: given for patients with Ph+ and those with ABL-class fusion. Ruxolitinib: given for patients with activation of JAK-STAT signaling; ALL patients with Day 15 or Day 22 MRD ≥5%, LLy patients who don't qualify for complete response at end of Remission Induction and all patients with ETP and T/M MPAL. Bortezomib is given to patients without targetable lesions and Day 15 or Day 22 MRD \>5%. Blinatumomab will be given to patients with residual disease at the end of induction (≥0.01% and \<1%), certain genetic subtypes and Down syndrome. Interventions: prednisone, vincristine, daunorubicin, pegaspargase (or Erwinase®, Rylaze™ or Calaspargase pegol), cyclophosphamide, cytarabine, mercaptopurine, dasatinib, bortezomib, ruxolitinib, blinatumomab, thioguanine, methotrexate, dexamethasone, doxorubicin
Drug: Prednisone · Drug: Vincristine · Drug: Daunorubicin · Drug: Pegaspargase · Drug: Erwinase® · Drug: Cyclophosphamide · Drug: Cytarabine · Drug: Mercaptopurine · Drug: Dasatinib · Drug: Methotrexate · Drug: Blinatumomab · Drug: Ruxolitinib · Drug: Bortezomib · Drug: Dexamethasone · Drug: Doxorubicin · Drug: Thioguanine · Drug: Asparaginase Erwinia chrysanthemi (recombinant)-rywn · Drug: Calaspargase Pegol
Experimental
B-ALL and B-LLy, High-risk
Induction (6 weeks), Early Intensification (4 weeks), Consolidation (8 weeks), and Immunotherapy (chimeric antigen receptor \[CAR\] T cells). Patients who do not respond to Immunotherapy will receive Reintensification therapy. During Remission Induction therapy, prednisone dose is 40mg/m\^2 and 2 doses of daunorubicin are given. Dasatinib, ruxolitinib, and bortezomib are given as done for patients with standard-risk B-ALL but are discontinued in Immunotherapy and Reintensification therapy. Blinatumomab will be given to patients who are not able to receive CAR T cell therapy and patients with certain genetic subtypes and those with Down syndrome. Interventions: prednisone, vincristine, daunorubicin, pegaspargase (or Erwinase®, Rylaze™ or Calaspargase pegol), cyclophosphamide, cytarabine, mercaptopurine, dasatinib, bortezomib, ruxolitinib, blinatumomab, etoposide, dexamethasone, clofarabine, thioguanine, methotrexate.
Drug: Prednisone · Drug: Vincristine · Drug: Daunorubicin · Drug: Pegaspargase · Drug: Erwinase® · Drug: Cyclophosphamide · Drug: Cytarabine · Drug: Mercaptopurine · Drug: Dasatinib · Drug: Methotrexate · Drug: Blinatumomab · Drug: Ruxolitinib · Drug: Bortezomib · Drug: Dexamethasone · Drug: Etoposide · Drug: Clofarabine · Drug: Thioguanine · Drug: Asparaginase Erwinia chrysanthemi (recombinant)-rywn · Drug: Calaspargase Pegol
Experimental
T-ALL and T-LLy, Standard-risk
Induction (6 wks), Early Intensification (4 wks), Consolidation (8 wks), and Continuation (120 wks). During Remission Induction therapy, prednisone dose is 60mg/m\^2 and 3 doses daunorubicin are given. Dasatinib is given for patients with Ph+ and those with ABL-class fusion. Ruxolitinib is given for patients with activation of JAK-STAT signaling; ALL patients with Day 15 or Day 22 MRD ≥5% and all patients with ETP and T/M MPAL and LLy patients who don't qualify for complete response at end of Remission Induction. Bortezomib is given to patients without targetable lesions and Day 15 or Day 22 MRD ≥ 5%. Interventions: prednisone, vincristine, daunorubicin, pegaspargase (or Erwinase®, Rylaze™ or Calaspargase pegol), cyclophosphamide, cytarabine, mercaptopurine, dasatinib, bortezomib, ruxolitinib, methotrexate, dexamethasone, doxorubicin, nelarabine, thioguanine.
Drug: Prednisone · Drug: Vincristine · Drug: Daunorubicin · Drug: Pegaspargase · Drug: Erwinase® · Drug: Cyclophosphamide · Drug: Cytarabine · Drug: Mercaptopurine · Drug: Dasatinib · Drug: Methotrexate · Drug: Ruxolitinib · Drug: Bortezomib · Drug: Dexamethasone · Drug: Doxorubicin · Drug: Nelarabine · Drug: Thioguanine · Drug: Asparaginase Erwinia chrysanthemi (recombinant)-rywn · Drug: Calaspargase Pegol
Experimental
T-ALL and T-LLy, High-risk
Induction (6 wks), Early Intensification (4 wks), Consolidation (8 wks), and Reintensification. During Remission Induction therapy, prednisone dose is 60mg/m\^2 and 3 doses daunorubicin are given. Dasatinib, ruxolitinib, and bortezomib given as done for patients with standard-risk T-ALL but are discontinued in Reintensification therapy. Interventions: prednisone, vincristine, daunorubicin, pegaspargase (or Erwinase®, Rylaze™ or Calaspargase pegol), cyclophosphamide, cytarabine, mercaptopurine, dasatinib, bortezomib, ruxolitinib, methotrexate, etoposide, dexamethasone, clofarabine, vorinostat, idarubicin, nelarabine, thioguanine..
Drug: Prednisone · Drug: Vincristine · Drug: Daunorubicin · Drug: Pegaspargase · Drug: Erwinase® · Drug: Cyclophosphamide · Drug: Cytarabine · Drug: Mercaptopurine · Drug: Dasatinib · Drug: Methotrexate · Drug: Ruxolitinib · Drug: Bortezomib · Drug: Dexamethasone · Drug: Etoposide · Drug: Clofarabine · Drug: Vorinostat · Drug: Idarubicin · Drug: Nelarabine · Drug: Thioguanine · Drug: Asparaginase Erwinia chrysanthemi (recombinant)-rywn · Drug: Calaspargase Pegol
Experimental
ALL, CEP72 T/T, Vincristine
Patients with the CEP72 rs904627T/T genotype (\~16% of patients) will be randomized (unblinded design, only those who evaluate neuropathy are blinded) to receive either 1.5 mg/m\^2 or 1 mg/m\^2 of vincristine after Continuation Week 1. Patients in low- risk will complete vincristine in Week 49 and those in standard/high-risk will complete in Week 101. Intervention: vincristine.
Drug: Vincristine
Experimental
ALL, CEP72 C/T or C/C, Vincristine
Patients with either a CEP72 rs904627 C/T or C/C genotype (\~84% of patients) will be randomized (unblinded design, only those who evaluate neuropathy are blinded) to receive vincristine (2 mg/m\^2 per dose except during Reinduction I and Reinduction II when 3 weekly doses of 1.5 mg/m\^2 will be given) and dexamethasone pulses through Week 49 of Continuation Treatment or through Week 101 of Continuation Treatment. Patients at low-risk will complete vincristine in Week 49. Interventions: vincristine, dexamethasone, methotrexate, mercaptopurine.
Drug: Vincristine · Drug: Mercaptopurine · Drug: Methotrexate · Drug: Dexamethasone

Interventions

DrugPrednisone
Given orally (PO).
Also known as: Prednisolone, Deltasone, Meticorten, Orasone®, Liquid Pred, Pediapred®, Sterapred®
DrugVincristine
Given intravenously (IV).
Also known as: Vincristine sulfate, Oncovin®, VCR, LCR
DrugDaunorubicin
Given IV.
Also known as: Daunomycin, rubidomycin, Cerubidine®
DrugPegaspargase
Given IV or intramuscularly (IM) .
Also known as: PEG-asparaginase, PEGLA, PEG-L-asparaginase, polyethylene glycol-L-asparaginase, Oncaspar®
DrugErwinase®
To be used in case of hypersensitivity or intolerance to Pegaspargase or if Pegaspargase is not available. Given IV or intramuscularly (IM).
Also known as: Erwinia chrysanthemi, Asparaginase Erwinia chrysanthemi, Erwinaze^TM, Crisantaspase
DrugCyclophosphamide
Given IV.
Also known as: Cytoxan®
DrugCytarabine
Given IV or by subcutaneous injection (SQ).
Also known as: Cytosine arabinoside, Ara-C, Cytosar®
DrugMercaptopurine
Given PO.
Also known as: 6-MP, Purinethol®, Purixan^TM, 6-mercaptopurine
DrugDasatinib
Given PO.
Also known as: Sprycel®
DrugMethotrexate
Given IV.
Also known as: MTX, amethopterin, Trexall®
DrugBlinatumomab
Given IV.
Also known as: Blincyto®
DrugRuxolitinib
Given PO.
Also known as: Jakafi®
DrugBortezomib
Given IV or subcutaneously (SQ).
Also known as: Velcade®
DrugDexamethasone
Given PO.
Also known as: Decadron®, Hexadrol®, Dexone®, Dexameth®
DrugDoxorubicin
Given IV.
Also known as: Adriamycin®
DrugEtoposide
Given IV.
Also known as: Etoposide Phosphate, VePesid®, Etopophos®, VP-16
DrugClofarabine
Given IV.
Also known as: Clolar®
DrugVorinostat
Given PO.
Also known as: Zolinza®, Suberoylanilide Hydroxamic Acid, SAHA
DrugIdarubicin
Given IV.
Also known as: Idarubicin HCl, 4-Demethoxydaunorubicin, 4-DMD, DMDR, Idamycin PFS®
DrugNelarabine
Given IV.
Also known as: Arranon®, Atriance®, Compound 506U78
DrugThioguanine
Participants with mercaptopurine-related pancreatitis. Given PO.
Also known as: 6-thioguanine, Tioguanine, 2-amino-1,7-dihydro-6H-purine-6-thione, WR-1141, Tabloid®, Lanvis®
DrugAsparaginase Erwinia chrysanthemi (recombinant)-rywn
To be used in case of hypersensitivity or intolerance to Pegaspargase or if Pegaspargase is not available. Given intramuscularly (IM).
Also known as: Rylaze™, Recombinant Erwinia
DrugCalaspargase Pegol
To be used in case of hypersensitivity or intolerance to Pegaspargase or if Pegaspargase is not available. Given IV.
Also known as: ASPARLAS

What researchers measure

Primary outcomes

Event-free survival of ALL patients (EFS)
5-year EFS: Kaplan-Meier estimates of EFS curve of ALL patients will be computed and compared historically with those of the St. Jude Children's Research Hospital's (SJCRH) TOTXVI study (NCT00549848). All eligible patients entered on the current TOT17 study will be included in these comparisons. Comparisons by log-rank tests will be made both un-stratified and stratified by risk groups.
Time frame: At 3.5 years after enrollment of the last participant
Proportion of patients with CEP72TT genotype who develop two or more episodes of Grade 2 or higher neuropathy during Continuation
This will be a single-blind, stratified block randomized experiment. Although the investigators who evaluate neuropathy and neuropathic pain and the patients are blinded for treatment assignment, treating clinicians and pharmacy staff are not. Patients will be randomized at a 1:1 ratio into two treatment groups: 1.5 mg/m\^2 vs. 1 mg/m\^2 vincristine (VCR) dose. Randomization will be stratified by two factors known to significantly affect neuropathy during the Continuation phase, namely, Grade 2 or higher neuropathy prior to Continuation (none, 1 episode, 2 or more episodes) and race (black, others). The proportion of patients who develop two or more episodes of Grade 2 or higher neuropathy during Continuation Treatment will be compared between the two VCR dose groups, using a Z-test for two sample proportions.
Time frame: At 6 months after the last randomized patient completes Continuation Treatment (Week 120).
Cumulative incidence of Grade 2 or higher neuropathy in patients with CEP72 CC or CT genotype
This will be a single blind stratified block randomized experiment. The investigators who evaluate neuropathy and neuropathic pain and the patients are blinded for treatment assignment. Treating clinicians and pharmacy staff will not be blinded. Standard/high-risk patients will be randomized at a 1:1 ratio into two treatment groups at Week 49 of Continuation therapy: to vincristine + dexamethasone (VCR+DEX) pulses or to 6-mercaptopurine + methotrexate (6MP+MTX). The primary analysis will compare the cumulative incidence of the first episode of Grade 2 or higher neuropathy or neuropathic pain (the end point) by stratified Gray's test. Adverse events other than the endpoint rendering a patient drop out after Continuation Week 49 are regarded as competing events.
Time frame: After the last randomized patient is followed for 1 year after Week 101 of Continuation therapy

Secondary outcomes

5-year overall survival (OS) of ALL patients compared to historical controls
Kaplan-Meier estimates of OS curve of ALL patients will be computed and compared historically with those of the St. Jude Children's Research Hospital's (SJCRH) TOTXVI study (NCT00549848). All eligible patients entered on the current TOT17 study will be included in these comparisons. Comparisons by log-rank tests will be made both un-stratified and stratified by risk groups.
Time frame: 3.5 years after enrollment of the last patient
EFS of LLy patients
5-year EFS: Kaplan-Meier estimates of EFS curve in patients with LLy will be computed.
Time frame: 3.5 years after enrollment of the last patient
5-year OS of LLy patients
Kaplan-Meier estimates of OS curve in patients with LLy will be computed.
Time frame: 3.5 years after enrollment of the last patient
The efficacy of blinatumomab in B-ALL patients
Comparison with historical control by log-rank tests will be performed.
Time frame: 3.5 years after enrollment of the last patient
Comparison of MRD measurements between flow cytometry and sequencing
For this comparison, 40 patients will be accrued for Day 8, Day 15 and Day 42 MRD, and primarily assess the correlation and concordance between the two methods at these time points if sufficient cells are available, and secondarily analyze for Day 22 and MRD levels obtained after remission induction.
Time frame: From Day 8 through Day 42 after remission induction (At 6 months after enrollment of the 40^t^h evaluable patient)
Log hazard ratio of the association of low level of MRD and treatment outcome
The investigators will analyze the association of next-generation sequencing-determined MRD level (as a continuous variable) with the risk of relapses in bone marrow and possibly other sites (bone marrow or combined relapses). Fine-Gray regression model will be applied to estimate the hazard ratio of relapse as a function of the increase in MRD level.
Time frame: 3.5 years after enrollment of the last patient
Comparison of bone marrow and peripheral blood MRD
Parametric (linear) or non-parametric (if necessary) regression models will be fitted to analyze the relationship between the MRD levels in peripheral blood by sequencing methods and MRD levels in bone marrow (by sequencing or flow cytometry). The peripheral blood MRD level corresponding to 0.01% in bone marrow is then obtained by solving the (regression) equation for the peripheral blood MRD level.
Time frame: From Day 15 through Day 42 of remission induction and end of therapy (At 6 months after enrollment of the last evaluable patient)
Isolated CNS relapse in CNS1b patients
Traditional CNS2 patients with negative TdT and negative next-generation sequencing results will receive CNS1 therapy on TOT17. Risk of isolated CNS relapse in this subset of patients will be compared to that in the CNS2 patients treated on TOTXV and TOTXVI, using stratified (by protocol) Gray's test.
Time frame: 3.5 years after enrollment of the last patient
Level of clonal diversity and rise of leukemic clones during treatment
In this study the investigators will use single-cell, cell-free, and bulk population sequencing to monitor somatic mutations in peripheral blood as patients undergo treatment, which will be correlated with clonal diversity at diagnosis, in vitro chemotherapy resistance, MRD, and patient outcome.
Time frame: From Day 1 through week 120 of continuation (at 6 months after the last enrolled patient completes Week 120)
Number and type of germline or somatic genomic variants associated with drug resistance
The number and type of germline or somatic genomic variants associated with drug resistance of ALL cells to conventional and newer targeted anti-leukemic agents in a non-clinical, research setting will be given.
Time frame: 3.5 years after enrollment of the last participant
Comparison of drug sensitivity of ALL cells between diagnosis and relapse in vitro and in vivo
To compare drug sensitivity of ALL cells from diagnosis to relapse in vitro and in vivo and determine if acquired resistance to specific agents is related to specific somatic genome variants that are not detected or found in only a minor clone at initial diagnosis
Time frame: 5 years after enrollment of the last participant
Change in bone mineral density (BMD) in the tibia
The primary outcome is BMD in the tibia, measured at baseline and the end of intervention. The changes from baseline to the end of the intervention between the treatment and control groups will be compared.
Time frame: From baseline to week 49 Continuation treatment (up to 6 months after last patient completes week 49 Continuation)
Change in markers of bone turnover
Linear mixed models or other methods will be used to evaluate this outcome.
Time frame: From baseline to week 49 Continuation treatment (up to 6 months after last patient completes week 49 Continuation)

Other outcomes

Log odds ratio of pharmacogenetic predictors of treatment outcome (host toxicity or in vivo efficacy)
The log odds ratio of pharmacogenetics predictors of treatment outcome will be given.
Time frame: 5 years after enrollment of the last participant
Log odds ratio of pharmacokinetic predictors of treatment outcome (host toxicity or in vivo efficacy)
The log odds ratio of pharmacokinetic predictors of treatment outcome will be given.
Time frame: 5 years after enrollment of the last participant
Log odds ratio of pharmacodynamic predictors of treatment outcome (host toxicity or in vivo efficacy)
The log odds ratio of pharmacodynamic predictors of treatment outcome will be given.
Time frame: 5 years after enrollment of the last participant
Thiopurine metabolism
A detailed assessment of thiopurine metabolism will be done and correlated with 6-mercaptopurine (6MP) tolerance, toxicity, and treatment outcome.
Time frame: 3.5 years after enrollment of the last participant
Number of participants experiencing specific therapy-related infection events
All enrolled participants will be eligible for this component. Descriptive statistics, such as frequency and proportion, will be summarized for breakthrough infections, antibiotic-resistant infections, febrile neutropenia episodes and adverse events. Cumulative incidence of breakthrough infection, febrile neutropenia and adverse events will also be explored, with competing risks and/or recurrent event appropriately adjusted.
Time frame: 1 year after completion of therapy for last enrolled patient (up to 3.5 years after enrollment)
5-year EFS of MPAL patients
Kaplan-Meier estimates of EFS curve in patients with MPAL will be computed.
Time frame: 3.5 years after enrollment of the last patient
5-year OS of MPAL patients
Kaplan-Meier estimates of OS curve in patients with MPAL will be computed.
Time frame: 3.5 years after enrollment of the last patient

Study locations

8 sites

Lucile Packard Children's Hospital Stanford University
Palo Alto, California 94305, United States
Rady Children's Hospital San Diego
San Diego, California 92123, United States
Children's Hospital of Illinois at OSF-Saint Francis Medical Center (St. Jude Midwest Affiliate - Peoria)
Peoria, Illinois 61637, United States
Children's Hospital of Michigan
Detroit, Michigan 48201, United States
St. Jude Affiliate Clinic - Novant Health Hemby Children's Hospital
Charlotte, North Carolina 28204, United States
St. Jude Children's Research Hospital
Memphis, Tennessee 38105, United States
Cook Children's Medical Center
Fort Worth, Texas 76104, United States
The Royal Children's Hospital Melbourne
Parkville, Victoria 3052, Australia

References and documents

Study documents

Informed consent form · Aug 23, 2022

Documents are hosted by the registry — open the source record to download them.

Updates

Tracking since Sep 25, 2026

No changes since tracking began. The registry record was last updated on Jun 17, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗

Registry details

Key details

Study ID: NCT03117751
Lead sponsor: St. Jude Children's Research Hospital
Collaborators: Incyte Corporation, Amgen, Servier
Responsible party: Sponsor
First posted: Apr 18, 2017
Start date: Mar 29, 2017
Primary completion: Sep 30, 2026 (estimated)
Completion: Sep 30, 2028 (estimated)
Last update: Jun 17, 2026

Study contacts

Hiroto Inaba, MD, PhD

principal investigator · St. Jude Children's Research Hospital

Oversight

Data monitoring committee: Yes
FDA-regulated drug: Yes
FDA-regulated device: No

View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is active, not recruiting, as verified in Jun 2026. You cannot join it, but the record below documents what was studied.

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