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Efficacy Study on the Strategy of HSV-Tk Engineering Donor Lymphocytes to Treat Patients With High Risk Acute Leukemia

TK008: Randomized Phase III Trial of Haploidentical HCT With or Without an Add Back Strategy of HSV-Tk Donor Lymphocytes in Patients With High Risk Acute Leukemia

Status
Terminated
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00914628
Acronym
TK008
Enrollment
92
Registered
2009-06-05
Start date
2010-04-12
Completion date
2019-11-30
Last updated
2021-06-22

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

Conditions

Acute Leukemia (Category)

Keywords

high risk acute leukemia, HSV-TK, Haploidentical HCT, GvHD, GvL, Immunoreconstitution

Brief summary

The main objective of this randomized trial is to compare disease-free survival (DFS) in high risk leukemia patients who underwent haploidentical HCT followed by an add back strategy of HSV-Tk donor lymphocytes or standard haploidentical HCT

Detailed description

Delayed immune-reconstitution remains one of the main limitation of haploidentical stem cell transplantation. The risk of severe infections remains high for several months and CD3+ reconstitution could take more than 10 months. The low number of lymphocytes infused with the graft, the degree of HLA (Human Leukocyte Antigen) disparity, and a reduced thymic function in adults and differences in host/donor antigen presenting cells are contributing causes. The infusions of HSV-TK engineered lymphocytes may represent a significant therapeutic improvement in haploidentical HCT (hematopoietic cell transplantation), because it remarkably may enhance both GvL (Graft versus Leukemia) activity, thus reducing the occurrence of disease relapse, and post-transplant immune reconstitution in the absence of chronic immune suppression, thus decreasing the rate of both post-transplant opportunistic infections and transplant-related mortality. Furthermore, the efficient control of GvHD achieved via the suicide mechanism allows also the multiple infusion of HSV-TK-treated donor lymphocytes, when needed, that might further improve post-transplant host immune reconstitution, and survival in patients receiving haplo-HCT. Finally, this therapeutic approach can become a valuable option for all candidates, including patients with advanced disease and older age. The proposed clinical trial represents an innovative therapeutic treatment for patients affected by high risk acute leukemia, who have undergone haploidentical stem cell transplantation.

Interventions

GENETICHSV-Tk

Infusion of approximately 1±0.2 x 10\^7 HSV-Tk genetically modified CD3+ cells/Kg between day +21 and day +49 after haploidentical HCT; in absence of immune reconstitution and GvHD further infusions up to 4 will be administered on monthly basis.

OTHERT-cell depleted or T-cell replete strategies

Haploidentical HCT with the infusion of CD34+ cells plus a fixed dose of T cells (1 x 10\^4/Kg) or unmanipulated haploidentical stem cell transplantation followed by high-dose cyclophosphamide as part of GvHD prophylaxis

Sponsors

AGC Biologics S.p.A.
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Age ≥ 18 years * Any of the following conditions: 1. AML and ALL in 1st complete remission (CR1) 2. AML and ALL in 2nd or subsequent CR 3. secondary AML in CR 4. AML and ALL in 1st or 2nd relapse or primary refractory * Family donor with patient-donor number of HLA mismatches ≥ 2 (full haploidentical), or family donors sharing one HLA-haplotype with the patient * Stable clinical conditions and life expectancy \> 3 months * PS ECOG \< 2 * Serum creatinine \< 1.5 x ULN * Bilirubin \< 1.5 x ULN; transaminases \< 3 x ULN * Left ventricular ejection fraction \> 45% * QTc interval \< 450 ms * DLCO \> 50% * Patients, or legal guardians, and donors must sign an informed consent indicating that they are aware this is a research study and have been told of its possible benefits and toxic side effects

Exclusion criteria

* Patients with life-threatening condition or complication other than their basic condition * Contraindication to haploidentical HCT as defined by the Investigator * Patients with active CNS disease * Pregnant or lactation.

Design outcomes

Primary

MeasureTime frameDescription
Disease-free Survival (DFS)From the date of randomization, assessed up to 12 monthsDefined as the measure from the date of randomization until the date of relapse (or progression), or death from any cause, whichever occurs first. Disease relapse or progression was determined by the Investigator based on the following disease examination: * Morphology (bone marrow or peripheral blood) * Confirmation of mixed or full chimerism (evaluation of the degree of chimerism between donor/host, according to institutional clinical practice, on bone marrow or peripheral blood) * Cytogenetic and/or molecular and/or other tests, according to institutional clinical practice (bone marrow or peripheral blood).

Secondary

MeasureTime frameDescription
Immune Reconstitution (IR)Weekly up to IR after engraftment of HCT, monthly for 6 months from date of IR and then at month 9 and 12Assess how many patients experience IR. For the assessment, competing risk analysis was performed considering death, relapse, and disease progression as competing events. Patients who were still alive and had no recovery (IR) nor relapse (or progression) were censored.IR is defined as achieving a level of circulating CD3+ ≥ 100/μL for two consecutive observations. The following laboratory examinations are performed: * Hematology: WBC (full and differential), RBC, platelets, Hb, Htc, MCV, MPV, serology CMV (PCR and antigenemia). * Blood chemistry: AST, ALT, γGT, total bilirubin, LDH.
Engraftment RateAt day 15 after HCT, monthly for 6 months after HCT and then at month 9 and 12Defined as the persistent blood cells count above predefined level.
Cumulative Incidence of Grade 2, 3, or 4 Acute GvHD (aGvHD)from the date of HCT until the date of the first occurrence of aGvHD, assessed up to 6 monthsDiagnosed and graded according to standard criteria. Grade 1: Skin: Stage 1-2: Rash on \< 25% of skin or Rash on 25-50% of skin Liver: Stage 1-2: Bilirubin 2-3 mg/dl or Bilirubin 3-6 mg/dl Gastrointestinal: Stage 1-2: Diarrhoea \> 500 ml/day or persistent nausea or Diarrhoea \> 1000ml/day
Cumulative Incidence of Chronic GvHD (cGvHD)From the date of HCT until the date of the first occurrence of cGvHD, assessed up to 12 monthsDiagnosed and graded according to standard NIH consensus criteria
Duration of GvHD EpisodesFrom the date of start until the date of resolution and duration of immunosuppressive treatments administered for controlling GvHD assessed up to 12 monthsDiagnosed and graded according to standard NIH consensus criteria
Overall Survival (OS)From the date of randomization to the date of death, assessed up to 12 monthsany death without previous occurrence of a documented relapse (or progression).Patients alive or without any follow up will be censored.
Incidence and Duration of Infectious Episodes and Infectious Disease MortalityFrom randomization to the date of resolution, assessed up to 12 monthsDiagnosis, monitoring and treatment of infectious relevant events
Evaluate the Acute and Long-term Toxicity Related to the HSV-Tk InfusionsFrom HSV-Tk infusions to the date of resolution, assessed up to 12 monthsToxicity profile of HSV-Tk infusions
Quality of Life (QoL) and Medical Care Utilization (MCU) in Both Armsfrom randomization up to 12 monthsMedical resource use data collected will be used in health economic analyses where it may be combined with other data from other sources such as cost data or other clinical parameters.
Non-relapse Mortality (NRM)From the date of randomization to the date of death, assessed up to 12 months.Defined for all patients as any death without previous occurrence of a documented relapse (or progression). Absence of relapse was determined by the Investigator based on the following disease examination: * Morphology (bone marrow or peripheral blood) * Confirmation of mixed or full chimerism (evaluation of the degree of chimerism between donor/host, according to institutional clinical practice, on bone marrow or peripheral blood) * Cytogenetic and/or molecular and/or other tests, according to institutional clinical practice (bone marrow or peripheral blood). Gray's test was used to compare the sub-distribution functions of the death without previous relapse (or progression) and relapse (or progression) events in the two treatment groups.
Cumulative Incidence of Relapse (CIR)from the date of randomization to the date of the first occurrence of relapse, assessed up to 12 monthsDefined on the basis of morphologic evidence of leukaemia in bone marrow or other sites. Gray's test was used to compare the sub-distribution functions of relapse (or progression) events in the two treatment groups. Patients alive without relapse (or regression) will be censored

Countries

Belgium, France, Germany, Greece, Israel, Italy, Lithuania, Portugal, Spain, United States

Participant flow

Recruitment details

Study period: Date of First patient enrolled: 12.04.2010; Date of Last patient completed: 30.11.2019; Date of End of study: 30.11.2019.

Pre-assignment details

Planned sample size n.170; Randomized patients n. 92. Discontinued n. 70; Early termination by the Sponsor n. 22;

Participants by arm

ArmCount
A - Experimental Arm
patients received the infusion of CD34+ cells plus a dose of T cells (approximately 1 x 104/Kg), followed by the infusion of HSV-TK genetically modified CD3+ cells In absence of immune reconstitution and GvHD further infusions up to 4 will be administered on monthly basis.
64
B- Comparator Arm
the physician chose whether the patient received the infusion of CD34+ cells plus a dose of T cells (approximately 1 x 104/Kg) or an unmanipulated haploidentical bone marrow or peripheral blood transplant followed by high-dose cyclophosphamide.
28
Total92

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyDeath3517
Overall StudyLack of Efficacy10
Overall StudyMedical decision40
Overall Studynon-randomized10
Overall StudyPatients who did not receive a single dose71
Overall StudyProtocol Violation10
Overall StudyRelapse12
Overall StudyStudy terminated by Sponsor148

Baseline characteristics

CharacteristicA - Experimental ArmB- Comparator ArmTotal
Age, Continuous45.89 years
STANDARD_DEVIATION 15.29
51.43 years
STANDARD_DEVIATION 12.41
47.58 years
STANDARD_DEVIATION 14.63
Race/Ethnicity, Customized
Asian
1 Participants0 Participants1 Participants
Race/Ethnicity, Customized
Black
3 Participants1 Participants4 Participants
Race/Ethnicity, Customized
Caucasian
55 Participants24 Participants79 Participants
Race/Ethnicity, Customized
Other
5 Participants3 Participants8 Participants
Sex: Female, Male
Female
23 Participants9 Participants32 Participants
Sex: Female, Male
Male
41 Participants19 Participants60 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
35 / 5317 / 27
other
Total, other adverse events
22 / 530 / 27
serious
Total, serious adverse events
35 / 5317 / 27

Outcome results

Primary

Disease-free Survival (DFS)

Defined as the measure from the date of randomization until the date of relapse (or progression), or death from any cause, whichever occurs first. Disease relapse or progression was determined by the Investigator based on the following disease examination: * Morphology (bone marrow or peripheral blood) * Confirmation of mixed or full chimerism (evaluation of the degree of chimerism between donor/host, according to institutional clinical practice, on bone marrow or peripheral blood) * Cytogenetic and/or molecular and/or other tests, according to institutional clinical practice (bone marrow or peripheral blood).

Time frame: From the date of randomization, assessed up to 12 months

Population: The analysis has been performed for all patients in the two treatment arms. The NRM analysis was performed on the Intention to Treat Population (ITT) and Per Protocol (PP) set populations.

ArmMeasureGroupCategoryValue (COUNT_OF_PARTICIPANTS)
A-Experimental ArmDisease-free Survival (DFS)DFS on ITTPatients with DFS event45 Participants
A-Experimental ArmDisease-free Survival (DFS)DFS on ITTCensored patients19 Participants
A-Experimental ArmDisease-free Survival (DFS)DFS on PP SetPatients with DFS event25 Participants
A-Experimental ArmDisease-free Survival (DFS)DFS on PP SetCensored patients13 Participants
A-Experimental ArmDisease-free Survival (DFS)DFS on ITT - day 21 after transplantPatients with DFS event38 Participants
A-Experimental ArmDisease-free Survival (DFS)DFS on ITT - day 21 after transplantCensored patients17 Participants
A-Experimental ArmDisease-free Survival (DFS)DFS on PP Set day 21 after transplantPatients with DFS event25 Participants
A-Experimental ArmDisease-free Survival (DFS)DFS on PP Set day 21 after transplantCensored patients13 Participants
B - Control ArmDisease-free Survival (DFS)DFS on PP Set day 21 after transplantCensored patients8 Participants
B - Control ArmDisease-free Survival (DFS)DFS on ITTPatients with DFS event20 Participants
B - Control ArmDisease-free Survival (DFS)DFS on ITT - day 21 after transplantPatients with DFS event20 Participants
B - Control ArmDisease-free Survival (DFS)DFS on ITTCensored patients8 Participants
B - Control ArmDisease-free Survival (DFS)DFS on PP Set day 21 after transplantPatients with DFS event18 Participants
B - Control ArmDisease-free Survival (DFS)DFS on PP SetPatients with DFS event18 Participants
B - Control ArmDisease-free Survival (DFS)DFS on ITT - day 21 after transplantCensored patients8 Participants
B - Control ArmDisease-free Survival (DFS)DFS on PP SetCensored patients8 Participants
p-value: 0.8974Log Rank
Comparison: DFS- Intention-To-Treat population- from baseline to day 21p-value: 0.7612Wilcoxon (Mann-Whitney)
p-value: 0.5995Log Rank
Comparison: DFS- Intention-To-Treat population - day 21 after transplantp-value: 0.4078Wilcoxon (Mann-Whitney)
Comparison: DFS- Per-Protocol Setp-value: 0.3351Log Rank
Comparison: DFS- Per-Protocol Setp-value: 0.1233Wilcoxon (Mann-Whitney)
Comparison: DFS- Per-Protocol Set DFS-day 21 after transplantp-value: 0.5995Log Rank
Comparison: DFS- Per-Protocol Set DFS-day 21 after transplantp-value: 0.4078Wilcoxon (Mann-Whitney)
Secondary

Cumulative Incidence of Chronic GvHD (cGvHD)

Diagnosed and graded according to standard NIH consensus criteria

Time frame: From the date of HCT until the date of the first occurrence of cGvHD, assessed up to 12 months

Population: Due to the early termination of the study, the analysis was not performed because data were not collected for this Outcome Measure

Secondary

Cumulative Incidence of Grade 2, 3, or 4 Acute GvHD (aGvHD)

Diagnosed and graded according to standard criteria. Grade 1: Skin: Stage 1-2: Rash on \< 25% of skin or Rash on 25-50% of skin Liver: Stage 1-2: Bilirubin 2-3 mg/dl or Bilirubin 3-6 mg/dl Gastrointestinal: Stage 1-2: Diarrhoea \> 500 ml/day or persistent nausea or Diarrhoea \> 1000ml/day

Time frame: from the date of HCT until the date of the first occurrence of aGvHD, assessed up to 6 months

Population: Due to the early termination of the study, the analysis was not performed because data were not collected for this Outcome Measure

Secondary

Cumulative Incidence of Relapse (CIR)

Defined on the basis of morphologic evidence of leukaemia in bone marrow or other sites. Gray's test was used to compare the sub-distribution functions of relapse (or progression) events in the two treatment groups. Patients alive without relapse (or regression) will be censored

Time frame: from the date of randomization to the date of the first occurrence of relapse, assessed up to 12 months

Population: The analysis has been performed for all patients in the two treatment arms. The NRM analysis was performed on the Intention to Treat Population (ITT) and Per Protocol (PP) set populations.

ArmMeasureGroupCategoryValue (COUNT_OF_PARTICIPANTS)
A-Experimental ArmCumulative Incidence of Relapse (CIR)CIR on PP SetPatients with relapse or progression11 Participants
A-Experimental ArmCumulative Incidence of Relapse (CIR)CIR on ITT population - CIRCensored patients19 Participants
A-Experimental ArmCumulative Incidence of Relapse (CIR)CIR on PP SetDeaths without previous relapse or progression14 Participants
A-Experimental ArmCumulative Incidence of Relapse (CIR)CIR on ITT population - CIRDeaths without previous relapse or progression27 Participants
A-Experimental ArmCumulative Incidence of Relapse (CIR)CIR on PP SetCensored patients13 Participants
A-Experimental ArmCumulative Incidence of Relapse (CIR)CIR on ITT population - CIRPatients with relapse or progression18 Participants
B - Control ArmCumulative Incidence of Relapse (CIR)CIR on PP SetCensored patients8 Participants
B - Control ArmCumulative Incidence of Relapse (CIR)CIR on ITT population - CIRPatients with relapse or progression11 Participants
B - Control ArmCumulative Incidence of Relapse (CIR)CIR on ITT population - CIRCensored patients8 Participants
B - Control ArmCumulative Incidence of Relapse (CIR)CIR on PP SetPatients with relapse or progression11 Participants
B - Control ArmCumulative Incidence of Relapse (CIR)CIR on PP SetDeaths without previous relapse or progression7 Participants
B - Control ArmCumulative Incidence of Relapse (CIR)CIR on ITT population - CIRDeaths without previous relapse or progression9 Participants
Comparison: This Statistical Analysis refers to ITT Patients with relapse or progression and was performed with Gray's Test for Equality of Cumulative Incidence Functionsp-value: 0.3526Chi-squared
Comparison: this Gray's Statistical Analysis refers to ITT Deaths patients without previous relapse or progression and was performed with Test for Equality of Cumulative Incidence Functionsp-value: 0.4035Chi-squared
Comparison: this Gray's Statistical Analysis refers to PPS patients with relapse or progression and was performed with Test for Equality of Cumulative Incidence Functionsp-value: 0.2607Chi-squared
Comparison: this Gray's Statistical Analysis refers to PPS Deaths patients without previous relapse or progression and was performed with Test for Equality of Cumulative Incidence Functionp-value: 0.5929Chi-squared
Secondary

Duration of GvHD Episodes

Diagnosed and graded according to standard NIH consensus criteria

Time frame: From the date of start until the date of resolution and duration of immunosuppressive treatments administered for controlling GvHD assessed up to 12 months

Population: Due to the early termination of the study, the analysis was not performed.because data were not collected for this Outcome Measure

Secondary

Engraftment Rate

Defined as the persistent blood cells count above predefined level.

Time frame: At day 15 after HCT, monthly for 6 months after HCT and then at month 9 and 12

Population: Due to the early termination of the study, the analysis was not performed because data were not collected for this Outcome Measure

Secondary

Evaluate the Acute and Long-term Toxicity Related to the HSV-Tk Infusions

Toxicity profile of HSV-Tk infusions

Time frame: From HSV-Tk infusions to the date of resolution, assessed up to 12 months

Population: Due to the early termination of the study, the analysis was not performed because data were not collected for this Outcome Measure

Secondary

Immune Reconstitution (IR)

Assess how many patients experience IR. For the assessment, competing risk analysis was performed considering death, relapse, and disease progression as competing events. Patients who were still alive and had no recovery (IR) nor relapse (or progression) were censored.IR is defined as achieving a level of circulating CD3+ ≥ 100/μL for two consecutive observations. The following laboratory examinations are performed: * Hematology: WBC (full and differential), RBC, platelets, Hb, Htc, MCV, MPV, serology CMV (PCR and antigenemia). * Blood chemistry: AST, ALT, γGT, total bilirubin, LDH.

Time frame: Weekly up to IR after engraftment of HCT, monthly for 6 months from date of IR and then at month 9 and 12

Population: The analysis has been performed for all patients in the two treatment arms. The NRM analysis was performed on the Intention to Treat Population (ITT) and Per Protocol (PP) set populations.

ArmMeasureGroupCategoryValue (COUNT_OF_PARTICIPANTS)
A-Experimental ArmImmune Reconstitution (IR)IR on ITTPatients with immune reconstitution without previous relapse or progression38 Participants
A-Experimental ArmImmune Reconstitution (IR)IR on ITTDeaths without previous immune reconstitution, relapse or progression13 Participants
A-Experimental ArmImmune Reconstitution (IR)IR on ITTPatients with relapse or progression without previous immune reconstitution6 Participants
A-Experimental ArmImmune Reconstitution (IR)IR on ITTCensored patients1 Participants
A-Experimental ArmImmune Reconstitution (IR)IR on PP SetPatients with immune reconstitution without previous relapse or progression29 Participants
A-Experimental ArmImmune Reconstitution (IR)IR on PP SetDeaths without previous immune reconstitution, relapse or progression4 Participants
A-Experimental ArmImmune Reconstitution (IR)IR on PP SetPatients with relapse or progression without previous immune reconstitution5 Participants
A-Experimental ArmImmune Reconstitution (IR)IR on PP SetCensored patients0 Participants
B - Control ArmImmune Reconstitution (IR)IR on PP SetCensored patients0 Participants
B - Control ArmImmune Reconstitution (IR)IR on ITTPatients with immune reconstitution without previous relapse or progression22 Participants
B - Control ArmImmune Reconstitution (IR)IR on PP SetPatients with immune reconstitution without previous relapse or progression22 Participants
B - Control ArmImmune Reconstitution (IR)IR on ITTDeaths without previous immune reconstitution, relapse or progression5 Participants
B - Control ArmImmune Reconstitution (IR)IR on PP SetPatients with relapse or progression without previous immune reconstitution1 Participants
B - Control ArmImmune Reconstitution (IR)IR on ITTPatients with relapse or progression without previous immune reconstitution1 Participants
B - Control ArmImmune Reconstitution (IR)IR on PP SetDeaths without previous immune reconstitution, relapse or progression3 Participants
B - Control ArmImmune Reconstitution (IR)IR on ITTCensored patients0 Participants
Comparison: This Statistical analysis refers to Immune reconstitution and was performed by Gray's Test for Equality of Cumulative Incidence Functions for intention-To-Treat populationp-value: 0.1735Chi-squared
Comparison: This Statistical analysis refers to deaths without previous immune reconstitution, relapse or progression and was performed by Gray's Test for Equality of Cumulative Incidence Functions for intention-To-Treat populationp-value: 0.5958Chi-squared
Comparison: This Statistical Analysis refers to patients with relapse or progression without previous immune reconstitution and was performed Gray's Test for Equality of Cumulative Incidence Functionsp-value: 0.2889Chi-squared
Comparison: This Statistical analysis refers to Immune reconstitution and was performed by Gray's Test for Equality of Cumulative Incidence Functions for Per-Protocol Set.p-value: 0.1642Chi-squared
Comparison: This Statistical analysis refers to deaths without previous immune reconstitution, relapse or progression and was performed by Gray's Test for Equality of Cumulative Incidence Functions for intention-To-Treat populationp-value: 0.8739Log Rank
Comparison: This Statistical Analysis refers to patients with relapse or progression without previous immune reconstitution and was performed Gray's Test for Equality of Cumulative Incidence Functionsp-value: 0.2304Chi-squared
Secondary

Incidence and Duration of Infectious Episodes and Infectious Disease Mortality

Diagnosis, monitoring and treatment of infectious relevant events

Time frame: From randomization to the date of resolution, assessed up to 12 months

Population: Due to the early termination of the study, the analysis was not performed because data were not collected for this Outcome Measure

Secondary

Non-relapse Mortality (NRM)

Defined for all patients as any death without previous occurrence of a documented relapse (or progression). Absence of relapse was determined by the Investigator based on the following disease examination: * Morphology (bone marrow or peripheral blood) * Confirmation of mixed or full chimerism (evaluation of the degree of chimerism between donor/host, according to institutional clinical practice, on bone marrow or peripheral blood) * Cytogenetic and/or molecular and/or other tests, according to institutional clinical practice (bone marrow or peripheral blood). Gray's test was used to compare the sub-distribution functions of the death without previous relapse (or progression) and relapse (or progression) events in the two treatment groups.

Time frame: From the date of randomization to the date of death, assessed up to 12 months.

Population: The analysis has been performed for all patients in the two treatment arms. The NRM analysis was performed on the Intention to Treat Population (ITT) and Per Protocol (PP) set populations.

ArmMeasureGroupCategoryValue (COUNT_OF_PARTICIPANTS)
A-Experimental ArmNon-relapse Mortality (NRM)NRM on ITT populationDeaths without previous relapse or progression27 Participants
A-Experimental ArmNon-relapse Mortality (NRM)NRM on ITT populationPatients with relapse or progression18 Participants
A-Experimental ArmNon-relapse Mortality (NRM)NRM on ITT populationCensored patients19 Participants
A-Experimental ArmNon-relapse Mortality (NRM)NRM on PP SetDeaths without previous relapse or progression14 Participants
A-Experimental ArmNon-relapse Mortality (NRM)NRM on PP SetPatients with relapse or progression11 Participants
A-Experimental ArmNon-relapse Mortality (NRM)NRM on PP SetCensored patients13 Participants
B - Control ArmNon-relapse Mortality (NRM)NRM on PP SetPatients with relapse or progression11 Participants
B - Control ArmNon-relapse Mortality (NRM)NRM on ITT populationDeaths without previous relapse or progression9 Participants
B - Control ArmNon-relapse Mortality (NRM)NRM on PP SetDeaths without previous relapse or progression7 Participants
B - Control ArmNon-relapse Mortality (NRM)NRM on ITT populationPatients with relapse or progression11 Participants
B - Control ArmNon-relapse Mortality (NRM)NRM on PP SetCensored patients8 Participants
B - Control ArmNon-relapse Mortality (NRM)NRM on ITT populationCensored patients8 Participants
Comparison: This Statistical Analysis refers to ITT Deaths without previous relapse or progression and was performed with Gray's Test for Equality of Cumulative Incidence Functionsp-value: 0.4035Chi-squared
Comparison: This statistical test refers to Patients with relapse or progression and was performed to Gray's Test for Equality of Cumulative Incidence Functions.p-value: 0.3526Chi-squared
Comparison: This Statistical Analysis refers to PPS Deaths without previous relapse or progression and was performed with Gray's Test for Equality of Cumulative Incidence Functionsp-value: 0.5929Chi-squared
Comparison: This statistical test refers to Patients with relapse or progression and was performed to Gray's Test for Equality of Cumulative Incidence Functions.p-value: 0.2607Chi-squared
Secondary

Overall Survival (OS)

any death without previous occurrence of a documented relapse (or progression).Patients alive or without any follow up will be censored.

Time frame: From the date of randomization to the date of death, assessed up to 12 months

Population: TThe analysis has been performed for all patients in the two treatment arms. The NRM analysis was performed on the Intention to Treat Population (ITT) and Per Protocol (PP) set populations.

ArmMeasureGroupCategoryValue (COUNT_OF_PARTICIPANTS)
A-Experimental ArmOverall Survival (OS)OS on ITTCensored patients22 Participants
A-Experimental ArmOverall Survival (OS)OS on PP Set - day 21 after transplantDeaths33 Participants
A-Experimental ArmOverall Survival (OS)OS on ITTDeaths42 Participants
A-Experimental ArmOverall Survival (OS)OS on PP SetCensored patients14 Participants
A-Experimental ArmOverall Survival (OS)OS on PP SetDeaths24 Participants
A-Experimental ArmOverall Survival (OS)OS on ITT- day 21 after transplantCensored patients20 Participants
A-Experimental ArmOverall Survival (OS)OS on ITT- day 21 after transplantDeaths35 Participants
A-Experimental ArmOverall Survival (OS)OS on PP Set - day 21 after transplantCensored patients18 Participants
B - Control ArmOverall Survival (OS)OS on PP Set - day 21 after transplantCensored patients10 Participants
B - Control ArmOverall Survival (OS)OS on PP SetDeaths16 Participants
B - Control ArmOverall Survival (OS)OS on PP Set - day 21 after transplantDeaths18 Participants
B - Control ArmOverall Survival (OS)OS on ITTCensored patients10 Participants
B - Control ArmOverall Survival (OS)OS on ITT- day 21 after transplantDeaths18 Participants
B - Control ArmOverall Survival (OS)OS on ITTDeaths18 Participants
B - Control ArmOverall Survival (OS)OS on ITT- day 21 after transplantCensored patients10 Participants
B - Control ArmOverall Survival (OS)OS on PP SetCensored patients10 Participants
p-value: 0.766Log Rank
Comparison: Statistical analysis has been performed for Intention-To-Treat population.p-value: 0.6706Wilcoxon (Mann-Whitney)
Comparison: Statistical analysis has been performed for Per-Protocol Set)p-value: 0.7332Log Rank
Comparison: Statistical analysis has been performed for Per-Protocol Set)p-value: 0.6439Wilcoxon (Mann-Whitney)
Secondary

Quality of Life (QoL) and Medical Care Utilization (MCU) in Both Arms

Medical resource use data collected will be used in health economic analyses where it may be combined with other data from other sources such as cost data or other clinical parameters.

Time frame: from randomization up to 12 months

Population: Due to the early termination of the study, the analysis was not performed because data were not collected for this Outcome Measure

Source: ClinicalTrials.gov · Data processed: Mar 17, 2026