Clinical Trial Results:
A Phase I/II Open Label Study Evaluating the Safety and Efficacy of Gene Therapy of the β-Hemoglobinopathies (Sickle Cell Disease and β-Thalassemia Major) by Transplantation of Autologous CD34+ Stem Cells Transduced Ex Vivo with a Lentiviral β-A-T87Q-Globin Vector (LentiGlobin® BB305 Drug Product)
Summary
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EudraCT number |
2012-000695-42 |
Trial protocol |
FR |
Global end of trial date |
26 Feb 2019
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Results information
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Results version number |
v1(current) |
This version publication date |
07 Sep 2019
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First version publication date |
07 Sep 2019
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Other versions |
Trial Information
Subject Disposition
Baseline Characteristics
End Points
Adverse Events
More Information
Subject Disposition
Baseline Characteristics
End Points
Adverse Events
More Information
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Trial identification
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Sponsor protocol code |
HGB-205
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Additional study identifiers
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ISRCTN number |
- | ||
US NCT number |
NCT02151526 | ||
WHO universal trial number (UTN) |
- | ||
Sponsors
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Sponsor organisation name |
bluebird bio, Inc
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Sponsor organisation address |
60 Binney Street, Cambridge, Massachusetts, United States, 02142
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Public contact |
Study Medical Director, bluebird bio. Inc, +31 30 310 04 50, medinfo@bluebirdbio.com
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Scientific contact |
Study Medical Director, bluebird bio. Inc, +31 30 310 04 50, medinfo@bluebirdbio.com
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Paediatric regulatory details
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Is trial part of an agreed paediatric investigation plan (PIP) |
Yes
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EMA paediatric investigation plan number(s) |
EMEA-001665-PIP02-17 | ||
Does article 45 of REGULATION (EC) No 1901/2006 apply to this trial? |
No
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Does article 46 of REGULATION (EC) No 1901/2006 apply to this trial? |
Yes
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Results analysis stage
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Analysis stage |
Final
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Date of interim/final analysis |
26 Feb 2019
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Is this the analysis of the primary completion data? |
Yes
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Primary completion date |
26 Feb 2019
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Global end of trial reached? |
Yes
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Global end of trial date |
26 Feb 2019
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Was the trial ended prematurely? |
No
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General information about the trial
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Main objective of the trial |
To determine the safety, tolerability, and success of engraftment with LentiGlobin BB305 Drug Product after conditioning with Busilvex (busulfan IV) in subjects with severe sickle cell disease (SCD) or transfusion dependent β-thalassemia (TDT).
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Protection of trial subjects |
All monitoring visits were conducted according to the International Conference on Harmonisation (ICH) and Good Clinical Practice (GCP) guidelines to ensure protocol adherence, quality of data, compliance with regulatory requirements, and continued adequacy of the study site and its facilities.
PIP was available only for SCD subjects.
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Background therapy |
- | ||
Evidence for comparator |
- | ||
Actual start date of recruitment |
07 Jun 2013
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Long term follow-up planned |
Yes
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Long term follow-up rationale |
Safety | ||
Long term follow-up duration |
24 Months | ||
Independent data monitoring committee (IDMC) involvement? |
Yes
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Population of trial subjects
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Number of subjects enrolled per country |
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Country: Number of subjects enrolled |
France: 7
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Worldwide total number of subjects |
7
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EEA total number of subjects |
7
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Number of subjects enrolled per age group |
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In utero |
0
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Preterm newborn - gestational age < 37 wk |
0
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Newborns (0-27 days) |
0
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Infants and toddlers (28 days-23 months) |
0
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Children (2-11 years) |
0
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Adolescents (12-17 years) |
4
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Adults (18-64 years) |
3
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From 65 to 84 years |
0
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85 years and over |
0
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Recruitment
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Recruitment details |
This study was conducted at a single site in France in between 07 June 2013 (First subject signed informed consent) to 26 February 2019 (Last subject last visit). | |||||||||
Pre-assignment
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Screening details |
A total of 7 subjects were enrolled and completed the study. 3 had Sickle Cell Disease (SCD) and 4 had transfusion-dependent β-thalassemia (TDT). | |||||||||
Period 1
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Period 1 title |
Overall Study (overall period)
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Is this the baseline period? |
Yes | |||||||||
Allocation method |
Not applicable
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Blinding used |
Not blinded | |||||||||
Arms
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Are arms mutually exclusive |
Yes
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Arm title
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LentiGlobin BB305 Drug Product for SCD | |||||||||
Arm description |
Following myeloablative conditioning with a dose (dose may be adjusted as per protocol) of 3.2 milligram per kilogram per day (mg/kg/day) busulfan intravenous (IV) for 4 consecutive days and subsequent daily monitoring of busulfan levels until no busulfan was detected, a single dose of greater than or equal to (> or =) 2.0×10^6 CD34+ cells/kg LentiGlobin BB305 Drug Product was administered to subjects with sickle cell disease (SCD) by IV infusion. | |||||||||
Arm type |
Experimental | |||||||||
Investigational medicinal product name |
LentiGlobin BB305 Drug Product
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Investigational medicinal product code |
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Other name |
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Pharmaceutical forms |
Suspension for injection
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Routes of administration |
Intravenous use
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Dosage and administration details |
LentiGlobin BB305 drug product was administered by intravenous (IV) infusion.
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Arm title
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LentiGlobin BB305 Drug Product for TDT | |||||||||
Arm description |
Following myeloablative conditioning with a dose (dose may be adjusted as per protocol) of 3.2 mg/kg/day busulfan Intravenous (IV) for 4 consecutive days and subsequent daily monitoring of busulfan levels until no busulfan was detected, a single dose of > or =3.0 × 10^6 CD34+ cells/kg LentiGlobin BB305 Drug Product was administered to subjects with transfusion-dependent β-thalassemia (TDT) by IV infusion. | |||||||||
Arm type |
Experimental | |||||||||
Investigational medicinal product name |
LentiGlobin BB305 Drug Product
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Investigational medicinal product code |
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Other name |
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Pharmaceutical forms |
Suspension for injection
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Routes of administration |
Intravenous use
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Dosage and administration details |
LentiGlobin BB305 drug product was administered by intravenous (IV) infusion.
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Baseline characteristics reporting groups
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Reporting group title |
LentiGlobin BB305 Drug Product for SCD
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Reporting group description |
Following myeloablative conditioning with a dose (dose may be adjusted as per protocol) of 3.2 milligram per kilogram per day (mg/kg/day) busulfan intravenous (IV) for 4 consecutive days and subsequent daily monitoring of busulfan levels until no busulfan was detected, a single dose of greater than or equal to (> or =) 2.0×10^6 CD34+ cells/kg LentiGlobin BB305 Drug Product was administered to subjects with sickle cell disease (SCD) by IV infusion. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Reporting group title |
LentiGlobin BB305 Drug Product for TDT
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Reporting group description |
Following myeloablative conditioning with a dose (dose may be adjusted as per protocol) of 3.2 mg/kg/day busulfan Intravenous (IV) for 4 consecutive days and subsequent daily monitoring of busulfan levels until no busulfan was detected, a single dose of > or =3.0 × 10^6 CD34+ cells/kg LentiGlobin BB305 Drug Product was administered to subjects with transfusion-dependent β-thalassemia (TDT) by IV infusion. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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End points reporting groups
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Reporting group title |
LentiGlobin BB305 Drug Product for SCD
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Reporting group description |
Following myeloablative conditioning with a dose (dose may be adjusted as per protocol) of 3.2 milligram per kilogram per day (mg/kg/day) busulfan intravenous (IV) for 4 consecutive days and subsequent daily monitoring of busulfan levels until no busulfan was detected, a single dose of greater than or equal to (> or =) 2.0×10^6 CD34+ cells/kg LentiGlobin BB305 Drug Product was administered to subjects with sickle cell disease (SCD) by IV infusion. | ||
Reporting group title |
LentiGlobin BB305 Drug Product for TDT
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Reporting group description |
Following myeloablative conditioning with a dose (dose may be adjusted as per protocol) of 3.2 mg/kg/day busulfan Intravenous (IV) for 4 consecutive days and subsequent daily monitoring of busulfan levels until no busulfan was detected, a single dose of > or =3.0 × 10^6 CD34+ cells/kg LentiGlobin BB305 Drug Product was administered to subjects with transfusion-dependent β-thalassemia (TDT) by IV infusion. |
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End point title |
Number of Treated Subjects With Successful Neutrophil and Platelet Engraftment [1] | |||||||||||||||
End point description |
Neutrophil engraftment was defined as the first of absolute neutrophil count (ANC) > or = 0.5 × 10^9/ liter (L) for 3 consecutive days (or 3 consecutive measurements done on separate days), after a post-transplant value less than [<] 0.5 × 10^9/L). Platelet engraftment was defined as the first of 3 consecutive platelet values > or =20 × 10^9/L for subjects with TDT and values > or =50 × 10^9/L for subjects with SCD obtained on different days with no platelet transfusions administered for 7 days immediately preceding and during the evaluation period. The day of engraftment is the first day of the 3 consecutive platelet measurements. This endpoint was evaluated in the Transplant Population (TP), which included all subjects in the intent-to-treat (ITT) population who underwent LentiGlobin BB305 Drug Product infusion.
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End point type |
Primary
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End point timeframe |
From time of drug product infusion through Month 24 visit
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Notes [1] - No statistical analyses have been specified for this primary end point. It is expected there is at least one statistical analysis for each primary end point. Justification: Descriptive statistics were performed; no inferential statistical analyses were performed. |
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No statistical analyses for this end point |
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End point title |
Time to Successful Neutrophil and Platelet Engraftment [2] | ||||||||||||||||||
End point description |
Neutrophil engraftment was defined as the first of ANC > or = 0.5 × 10^9/ liter (L) for 3 consecutive days (or 3 consecutive measurements done on separate days), after a post-transplant value < 0.5 × 10^9/L). Platelet engraftment was defined as the first of 3 consecutive platelet values > or =20 × 10^9/L for subjects with TDT and values > or =50 × 10^9/L for subjects with SCD obtained on different days with no platelet transfusions administered for 7 days immediately preceding and during the evaluation period. The day of engraftment is the first day of the 3 consecutive platelet measurements. This endpoint was evaluated in the Transplant Population (TP).
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End point type |
Primary
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End point timeframe |
From time of drug product infusion through Month 24 visit
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Notes [2] - No statistical analyses have been specified for this primary end point. It is expected there is at least one statistical analysis for each primary end point. Justification: Descriptive statistics were performed; no inferential statistical analyses were performed. |
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No statistical analyses for this end point |
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End point title |
Incidence of Transplant Related Mortality [3] | |||||||||
End point description |
This is the safety endpoint related to mortality. Transplant related mortality was defined as any death occurring in the study post drug product infusion deemed related to the transplant by the investigator. This endpoint was evaluated in the Transplant Population (TP).
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End point type |
Primary
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End point timeframe |
From screening through 365 days post-transplant
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Notes [3] - No statistical analyses have been specified for this primary end point. It is expected there is at least one statistical analysis for each primary end point. Justification: Descriptive statistics were performed; no inferential statistical analyses were performed. |
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No statistical analyses for this end point |
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End point title |
Overall Survival [4] | |||||||||
End point description |
Overall survival was defined as time from date of LentiGlobin BB305 Drug Product infusion (Day 1) to date of death. Overall survival was censored at the date of last visit if the subject was still alive. Subjects who survived throughout the study were reported in this endpoint. This endpoint was evaluated in the ITT population, which consisted of all subjects who initiated any study procedures, beginning with mobilization (by granulocyte-colony stimulating factor [G-CSF] with or without plerixafor), or bone marrow harvest.
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End point type |
Primary
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End point timeframe |
From time of drug product infusion through Month 24 visit
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Notes [4] - No statistical analyses have been specified for this primary end point. It is expected there is at least one statistical analysis for each primary end point. Justification: Descriptive statistics were performed; no inferential statistical analyses were performed. |
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No statistical analyses for this end point |
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End point title |
Percentage of Subjects With Vector-Derived Replication-Competent Lentivirus (RCL) [5] | ||||||||||||
End point description |
Blood samples were analyzed for detection of RCL using RCL co-culture assay. This endpoint was evaluated in the ITT population.
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End point type |
Primary
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End point timeframe |
From time of drug product infusion through Month 24 visit
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Notes [5] - No statistical analyses have been specified for this primary end point. It is expected there is at least one statistical analysis for each primary end point. Justification: Descriptive statistics were performed; no inferential statistical analyses were performed. |
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No statistical analyses for this end point |
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End point title |
Number of Treated Subjects With (>) 30 Percent (%) Contribution of an Individual Clone As Per Integration Site Analysis (ISA) [6] | |||||||||
End point description |
Clonal dominance was defined as an ISA result greater than (>) 90% of the total IS at any time and a vector copy number (VCN) > or =0.3, or an initial ISA result of > 30% of the total IS with a VCN > or =0.3 followed by a result > 30% and less than or equal to (< or =)90% at first repeat and a result > 50% at second repeat. This endpoint was evaluated in the Transplant Population (TP).
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End point type |
Primary
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End point timeframe |
From time of drug product infusion through Month 24 visit
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Notes [6] - No statistical analyses have been specified for this primary end point. It is expected there is at least one statistical analysis for each primary end point. Justification: Descriptive statistics were performed; no inferential statistical analyses were performed. |
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No statistical analyses for this end point |
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End point title |
Number of Subjects With Adverse Events (AEs) and Serious Adverse Events (SAEs) [7] | |||||||||||||||
End point description |
An AE was any untoward medical occurrence associated with the use of a drug in subjects, whether or not considered drug related. An AE may include a change in physical signs, symptoms, and/or clinically significant laboratory change occurring in any phase of a clinical study. This definition includes inter-current illnesses or injuries, and exacerbation of pre-existing conditions. An SAE was any AE, occurring at any dose and regardless of causality, that resulted in death, was life-threatening, required in-patient hospitalization or prolongation of existing hospitalization, resulted in persistent or significant disability/incapacity, a congenital anomaly/birth defect, or was considered an important medical event that may jeopardize the subject and may require medical or surgical intervention to prevent an outcome listed previously. The number of subjects with AEs and SAEs was evaluated. This endpoint was evaluated in the ITT population.
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End point type |
Primary
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End point timeframe |
From date of Informed Consent up to Month 24 visit
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Notes [7] - No statistical analyses have been specified for this primary end point. It is expected there is at least one statistical analysis for each primary end point. Justification: Descriptive statistics were performed; no inferential statistical analyses were performed. |
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No statistical analyses for this end point |
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End point title |
Percentage of Treated TDT Subjects Who Achieved Transfusion independence (TI) [8] | ||||||||
End point description |
TI was defined as a weighted average hemoglobin (Hb) > or =9 grams per deciliter (g/dL) without any pRBC transfusions for a continuous period of > or =12 months at any time during the study after drug product infusion, where calculation of time period of TI starts when subjects achieve a Hb > or =9 g/dL with no transfusions in the preceding 60 days. This endpoint was evaluated
in the TDT Transplant Population (TP).
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End point type |
Secondary
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End point timeframe |
From time of drug product infusion through Month 24 visit
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Notes [8] - The end point is not reporting statistics for all the arms in the baseline period. It is expected all the baseline period arms will be reported on when providing values for an end point on the baseline period. Justification: Transfusion Independence (TI) was only evaluated in TDT subjects. |
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No statistical analyses for this end point |
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End point title |
Weighted Average Hemoglobin (Hb) During Period of Transfusion Independence (TI) [9] | ||||||||
End point description |
TI was defined as a weighted average hemoglobin (Hb) > or =9 grams per deciliter (g/dL) without any pRBC transfusions for a continuous period of > or =12 months at any time during the study after drug product infusion, where calculation of time period of TI starts when subjects achieve a Hb > or =9 g/dL with no transfusions in the preceding 60 days. This endpoint was evaluated in the TDT Transplant Population (TP) that reached TI.
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End point type |
Secondary
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End point timeframe |
From time of drug product infusion through Month 24 visit
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Notes [9] - The end point is not reporting statistics for all the arms in the baseline period. It is expected all the baseline period arms will be reported on when providing values for an end point on the baseline period. Justification: Transfusion Independence (TI) was only evaluated in TDT subjects. |
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No statistical analyses for this end point |
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End point title |
Duration of Transfusion Independence (TI) [10] | ||||||||
End point description |
TI was defined as a weighted average Hb > or =9 grams per deciliter (g/dL) without any pRBC transfusions for a continuous period of > or =12 months at any time during the study after drug product infusion, where calculation of time period of TI starts when subjects achieve a Hb > or =9 g/dL with no transfusions in the preceding 60 days. To meet the initial TI criteria, the weighted Hb must be > or =9 g/dL at the end of the 12-month period, to remain in the TI state beyond the 12-month period, the treated subject needs to maintain a weighted Hb of > or =9 g/dL from that point forward, without receiving a pRBC transfusion. This endpoint reports the duration of TI and was evaluated in the TDT Transplant Population (TP) that reached TI.
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End point type |
Secondary
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End point timeframe |
From time of drug product infusion through Month 24 visit
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Notes [10] - The end point is not reporting statistics for all the arms in the baseline period. It is expected all the baseline period arms will be reported on when providing values for an end point on the baseline period. Justification: Transfusion Independence (TI) was only evaluated in TDT subjects. |
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No statistical analyses for this end point |
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End point title |
Time From LentiGlobin BB305 Drug Product Infusion to Last Packed Red Blood Cells (pRBC) Transfusion Prior to Achieving Transfusion Independence (TI) [11] | ||||||||
End point description |
TI was defined as a weighted average Hb > or =9 grams per deciliter (g/dL) without any pRBC transfusions for a continuous period of > or =12 months at any time during the study after drug product infusion, where calculation of time period of TI starts when subjects achieve a Hb > or =9 g/dL with no transfusions in the preceding 60 days. To meet the initial TI criteria, the weighted Hb must be > or =9 g/dL at the end of the 12-month period, to remain in the TI state beyond the 12-month period, the treated subject needs to maintain a weighted Hb of > or =9 g/dL from that point forward, without receiving a pRBC transfusion. This endpoint reports the time from infusion to the last pRBC transfusion prior to achieving TI and was evaluated in the TDT Transplant Population (TP) that reached TI.
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End point type |
Secondary
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End point timeframe |
From time of drug product infusion through Month 24 visit
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Notes [11] - The end point is not reporting statistics for all the arms in the baseline period. It is expected all the baseline period arms will be reported on when providing values for an end point on the baseline period. Justification: Transfusion Independence (TI) was only evaluated in TDT subjects. |
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No statistical analyses for this end point |
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End point title |
Time from LentiGlobin BB305 Drug Product Infusion to Achieving Transfusion Independence (TI) [12] | ||||||||
End point description |
TI was defined as a weighted average Hb > or =9 grams per deciliter (g/dL) without any pRBC transfusions for a continuous period of > or =12 months at any time during the study after drug product infusion, where calculation of time period of TI starts when subjects achieve a Hb > or =9 g/dL with no transfusions in the preceding 60 days. To meet the initial TI criteria, the weighted Hb must be > or =9 g/dL at the end of the 12-month period, to remain in the TI state beyond the 12-month period, the treated subject needs to maintain a weighted Hb of > or =9 g/dL from that point forward, without receiving a pRBC transfusion. This endpoint reports the time from infusion to achievement of TI and was reported in the TDT Transplant Population (TP) that reached TI.
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End point type |
Secondary
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End point timeframe |
From time of drug product infusion through Month 24 visit
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Notes [12] - The end point is not reporting statistics for all the arms in the baseline period. It is expected all the baseline period arms will be reported on when providing values for an end point on the baseline period. Justification: Transfusion Independence (TI) was only evaluated in TDT subjects. |
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No statistical analyses for this end point |
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End point title |
Weighted Average Nadir Hemoglobin (Hb) [13] | ||||||||
End point description |
Weighted average Hb nadir was defined as an average area under the curve where the Hb closest but within 3 days prior to a transfusion was used as the Hb nadir. Hb values on the day of the transfusion were considered for nadir calculations. This endpoint was evaluated in the TDT Transplant Population (TP).
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End point type |
Secondary
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End point timeframe |
From 6 months post-drug product infusion through Month 24 visit
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Notes [13] - The end point is not reporting statistics for all the arms in the baseline period. It is expected all the baseline period arms will be reported on when providing values for an end point on the baseline period. Justification: Weighted Average Nadir Hemoglobin (Hb) was evaluated only in TDT subjects. |
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No statistical analyses for this end point |
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End point title |
Percentage Change From Baseline in Annualized Packed Red Blood Cell (pRBC) Transfusion Volume | ||||||||||||
End point description |
Percent change from baseline in the average annual transfusion volume from 6 months post-drug product infusion through last visit were reported. This endpoint was evaluated in the Transplant Population (TP).
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End point type |
Secondary
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End point timeframe |
Baseline, From 6 months post-drug product infusion through Month 24 visit
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No statistical analyses for this end point |
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End point title |
Percentage Change From Baseline in Annualized Number of Packed Red Blood Cell (pRBC) Transfusions | ||||||||||||
End point description |
Frequency of pRBC transfusions (number per year) from 6 months post-drug product infusion through last visit were reported. This endpoint was evaluated in the Transplant Population (TP).
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End point type |
Secondary
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End point timeframe |
Baseline, From 6 months post-drug product infusion through Month 24 visit
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No statistical analyses for this end point |
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End point title |
Number of Subjects with Vaso-Occlusive Crisis (VOC) and/or Acute Chest Syndrome (ACS) Events Post Drug Product Infusion [14] | ||||||||||
End point description |
Number of VOCs, ACS, and vaso-occlusive events (VOEs; which included both VOC and ACS) through 24 months after drug product infusion, compared to 2 years prior to enrollment. This endpoint was evaluated in ITT population.
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End point type |
Secondary
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End point timeframe |
From time of drug product infusion through Month 24 visit
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Notes [14] - The end point is not reporting statistics for all the arms in the baseline period. It is expected all the baseline period arms will be reported on when providing values for an end point on the baseline period. Justification: VOC and/or ACS events were only evaluable in SCD subjects |
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Notes [15] - Events of VOC and ACS were from same subject |
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No statistical analyses for this end point |
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End point title |
Therapeutic Globin Expression Measured by Hb Containing β^A -T87Q Globin (HbA^T87Q) in Peripheral Blood | ||||||||||||
End point description |
Therapeutic globin expression was measured by HbA^T87Q in peripheral blood and the ratio of alpha(α)- globin to all beta (β)-like-globins. The relative amount of each globin produced by a subject (including βA^A-T87Q globin) was determined in peripheral blood throughout the study. This endpoint was evaluated in the Transplant Population (TP).
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End point type |
Secondary
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End point timeframe |
From time of drug product infusion through Month 24 visit
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No statistical analyses for this end point |
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End point title |
Vector Copy Number (VCN) in Peripheral Blood | ||||||||||||
End point description |
LentiGlobin BB305 lentiviral vector (LVV) transduction efficiency was measured by VCN. The presence of vector sequences in the genomic DNA of cells is detected using quantitative polymerase chain reaction (qPCR), and results were expressed as VCN. This endpoint was evaluated in the Transplant Population (TP).
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End point type |
Secondary
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End point timeframe |
From time of drug product infusion through Month 24 visit
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No statistical analyses for this end point |
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Adverse events information
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Timeframe for reporting adverse events |
From date of informed consent through Month 24 visit
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Assessment type |
Non-systematic | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Dictionary used for adverse event reporting
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Dictionary name |
MedDRA | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Dictionary version |
19.0
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Reporting groups
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Reporting group title |
LentiGlobin BB305 Drug Product for SCD
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Reporting group description |
Following myeloablative conditioning with a dose (dose may be adjusted as per protocol) of 3.2 milligram per kilogram per day (mg/kg/day) busulfan intravenous (IV) for 4 consecutive days and subsequent daily monitoring of busulfan levels until no busulfan was detected, a single dose of > or = 2.0×10^6 CD34+ cells/kg LentiGlobin BB305 Drug Product was administered to subjects with SCD by IV infusion. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Reporting group title |
LentiGlobin BB305 Drug Product for TDT
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Reporting group description |
Following myeloablative conditioning with a dose (dose may be adjusted as per protocol) of 3.2 mg/kg/day busulfan Intravenous (IV) for 4 consecutive days and subsequent daily monitoring of busulfan levels until no busulfan was detected, a single dose of greater than or equal to > or =3.0 × 10^6 CD34+ cells/kg LentiGlobin BB305 Drug Product was administered to subjects with transfusion-dependent β-thalassemia (TDT) by IV infusion. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Frequency threshold for reporting non-serious adverse events: 5% | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Substantial protocol amendments (globally) |
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Were there any global substantial amendments to the protocol? Yes | |||
Date |
Amendment |
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18 Apr 2012 |
Original:
Enrollment in Study HGB 205 began. |
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05 Oct 2012 |
Version 2:
Enrollment of subjects with severe SCD and cerebral vasculopathy was made contingent upon approval by ANSM, the Comité de protection des personnes (CPP), and the Comité de Surveillance (CDS) after review of safety and efficacy data from >or=2 SCD subjects without cerebral vasculopathy treated with LentiGlobin BB305 Drug Product in this study.
Hematologic abnormalities considered a direct consequence of the conditioning regimen were to be reported. |
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23 Sep 2013 |
Version 3:
Clarified that approval for enrollment of subjects with severe SCD and cerebral vasculopathy is the jurisdiction of the Comité de Surveillance.
Clarified that ovarian tissue grafting potentially may be offered to subjects under the context of biomedical research.
Busulfan range corrected for units and dosing regimen (changed from 'range 800 to 1100 micrometer per minute (µM/min)' to 'Area Under Curve (AUC) range 800 to 1100 µM*min for a q6 hour dosing regimen, or 3200 to 4400 µM*min for a daily dosing regimen')
Increased monitoring of physical examinations, CBCs, and vital signs during apheresis
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07 Jul 2014 |
Version 4:
Staggering altered from 3 subjects observed for 2 months to 2 subjects observed for 3 months, as longer observation of initial subjects felt to give more safety information than shorter observation of more subjects.
Washout definition changed from "there must be a minimum of 4 busulfan washout days" to "until no busulfan is detected for at least 2 consecutive days", as considered sufficient for HSC safety.
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15 Dec 2014 |
Version 5.1:
Increased the frequency of HPLC globin analyses to provide better kinetics.
Added erythropoietin tests, erythroblast counts, and exploratory bone marrow cellularity studies to help evaluate erythropoiesis; a new set of exploratory tests for sickle cell disease (SCD) to assist in evaluating the efficacy of treatment on this disease; new immunology testing to provide more safety data.
Removed VCN and globin chain analysis in BFU Es in blood and bone marrow, as VCN in peripheral blood adequate to monitor persistence; removed RCL and ISA time points not recommended by regulatory authorities.
Clarified that additional cell collection procedures may be allowed in the event of drug product release-testing failure.
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26 Aug 2015 |
Version 6:
The stipulation that safety and efficacy data from at least 2 SCD subjects without cerebral vasculopathy treated with LentiGlobin BB305 Drug Product be available in Study HGB-205 specifically was removed because bluebird bio has another ongoing study with LentiGlobin BB305 in subjects with severe SCD in the USA (Study HGB-206), and the required safety and efficacy data pre-specified to allow enrollment of SCD subjects with cerebral vasculopathy will be available collectively from the 2 ongoing studies (HGB-205 and HGB-206). The amount and duration of data required from these 2 trials to allow enrollment of SCD subjects with cerebral vasculopathies in this study remained at the discretion of the CDS. |
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19 May 2016 |
Version 7:
Adjusted the acceptable busulfan range (from AUC 800 to 1100 µM*min to 1000 to 1300 µM*min for an every 6 hour dosing regimen, and from AUC 3200 to 4400 µM*min to 4000 to 5200 µM*min for a daily dosing regimen) based on clinical experience that increased busulfan exposure assists in achieving improved efficacy outcomes.
Increased the minimum cell number for the dose from 1.5 × 10^6 CD34+ cells/kg to 2.0 × 10^6 CD34+ cells/kg when bone marrow is used as the cell source, as well as increased the number of bone marrow harvests that may be performed to up to 3 bone marrow harvests, based on clinical experience suggesting that doses above the current minimum may promote a better clinical response, and on acceptable clinical safety observed during bone marrow harvests in this study to date, for subjects with SCD.
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Interruptions (globally) |
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Were there any global interruptions to the trial? No | |||
Limitations and caveats |
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Limitations of the trial such as small numbers of subjects analysed or technical problems leading to unreliable data. | |||
PIP was available only for SCD subjects. |