Skip to content
← Full study record

NCT02013167 · OUTCOME

Percentage of Participants With Complete Remission Within 12 Weeks of Treatment Initiation

Blinatumomab Versus Standard of Care Chemotherapy in Patients With Relapsed or Refractory Acute Lymphoblastic Leukemia (ALL) · Source last updated 2024-03-05

Results reported by the registry submitting party. Population, time horizon, units and missing values must be read together.

Measure
NUMBER
Unit
percentage of participants
Interval / dispersion
95% Confidence Interval
Time frame
12 weeks

What was measured

Participants were evaluated for efficacy at the end of each treatment cycle via a central bone marrow aspiration and local peripheral blood counts. Complete Remission (CR) was defined as having ≤ 5% blasts in the bone marrow, no evidence of disease, and full recovery of peripheral blood counts: platelets \> 100,000/μl, and absolute neutrophil count (ANC) \> 1,000/μl. CR must have occurred within 12 weeks of the first dose of therapy.

Analysis population: All randomized participants

Groups in this outcome

Standard of Care Chemotherapy

Participants received one of four prespecified, investigator-chosen chemotherapy regimens for 2 induction cycles. Participants who achieved a bone marrow response, CR/CRh\*/CRi within 2 induction cycles of treatment could receive up to 3 additional consolidation cycles of SOC chemotherapy. Participants who received 2 induction and up to 3 consolidation cycles of therapy and continued to have a bone marrow response or CR/CRh\*/CRi could continue to receive SOC therapy for an additional 12 months.

Blinatumomab

Participants received blinatumomab by continuous intravenous infusion (CIVI) over 4 weeks followed by a 2 week treatment-free interval for 2 induction cycles. Participants who achieved a bone marrow response, complete remission, or complete remission with partial or incomplete hematologic recovery (CR/CRh\*/CRi) within 2 induction cycles of treatment could receive up to 3 additional consolidation cycles of blinatumomab. Participants who received 2 induction and up to 3 consolidation cycles of therapy and continued to have a bone marrow response or CR/CRh\*/CRi could continue to receive blinatumomab for an additional 12 months (4 cycles), where 1 cycle consisted of 4 weeks of CIVI followed by an 8-week treatment-free period. The initial dose of blinatumomab was 9 μg/day for the first 7 days of treatment, increased to 28 μg/day starting on day 8 through day 29 and for all subsequent cycles.

Group identifiers and denominators belong to this outcome only. They may differ in another outcome or in safety reporting.

Analysis denominator · Participants

GroupSource count
Standard of Care Chemotherapy134
Blinatumomab271

Reported measurements

Source class 1
Values in percentage of participants · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Standard of Care Chemotherapy15.7Not reported10.023.0Not reported
Blinatumomab33.6Not reported28.039.5Not reported

Source statistical analyses

Group order, estimate direction, methods and comments are retained. No treatment ranking is inferred.

  1. ci Lower Limit
    9.6
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    26.2
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY_OR_OTHER_LEGACY
    p Value
    < 0.001
    param Type
    Treatment difference
    param Value
    17.9
    statistical Comment
    Adjusted for the stratification factors: age (\< 35 vs. ≥ 35), prior salvage therapy (yes vs. no), and prior allogeneic HSCT (yes vs. no).
    statistical Method
    Cochran-Mantel-Haenszel
Complete source fields
analyses
  1. ci Lower Limit
    9.6
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    26.2
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY_OR_OTHER_LEGACY
    p Value
    < 0.001
    param Type
    Treatment difference
    param Value
    17.9
    statistical Comment
    Adjusted for the stratification factors: age (\< 35 vs. ≥ 35), prior salvage therapy (yes vs. no), and prior allogeneic HSCT (yes vs. no).
    statistical Method
    Cochran-Mantel-Haenszel
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        10.0
        upper Limit
        23.0
        value
        15.7
      2. group Id
        OG001
        lower Limit
        28.0
        upper Limit
        39.5
        value
        33.6
denoms
  1. counts
    1. group Id
      OG000
      value
      134
    2. group Id
      OG001
      value
      271
    units
    Participants
description
Participants were evaluated for efficacy at the end of each treatment cycle via a central bone marrow aspiration and local peripheral blood counts. Complete Remission (CR) was defined as having ≤ 5% blasts in the bone marrow, no evidence of disease, and full recovery of peripheral blood counts: platelets \> 100,000/μl, and absolute neutrophil count (ANC) \> 1,000/μl. CR must have occurred within 12 weeks of the first dose of therapy.
dispersion Type
95% Confidence Interval
groups
  1. description
    Participants received one of four prespecified, investigator-chosen chemotherapy regimens for 2 induction cycles. Participants who achieved a bone marrow response, CR/CRh\*/CRi within 2 induction cycles of treatment could receive up to 3 additional consolidation cycles of SOC chemotherapy. Participants who received 2 induction and up to 3 consolidation cycles of therapy and continued to have a bone marrow response or CR/CRh\*/CRi could continue to receive SOC therapy for an additional 12 months.
    id
    OG000
    title
    Standard of Care Chemotherapy
  2. description
    Participants received blinatumomab by continuous intravenous infusion (CIVI) over 4 weeks followed by a 2 week treatment-free interval for 2 induction cycles. Participants who achieved a bone marrow response, complete remission, or complete remission with partial or incomplete hematologic recovery (CR/CRh\*/CRi) within 2 induction cycles of treatment could receive up to 3 additional consolidation cycles of blinatumomab. Participants who received 2 induction and up to 3 consolidation cycles of therapy and continued to have a bone marrow response or CR/CRh\*/CRi could continue to receive blinatumomab for an additional 12 months (4 cycles), where 1 cycle consisted of 4 weeks of CIVI followed by an 8-week treatment-free period. The initial dose of blinatumomab was 9 μg/day for the first 7 days of treatment, increased to 28 μg/day starting on day 8 through day 29 and for all subsequent cycles.
    id
    OG001
    title
    Blinatumomab
param Type
NUMBER
population Description
All randomized participants
reporting Status
POSTED
time Frame
12 weeks
title
Percentage of Participants With Complete Remission Within 12 Weeks of Treatment Initiation
type
SECONDARY
unit Of Measure
percentage of participants

Download exact source JSON → · Snapshot ctgov-results-191f4516d4760045304b24a0

Preserved source evidence · Not medical advice