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NCT01996865 · OUTCOME

Time to Histological Transformation

Lenalidomide Plus Rituximab Followed by Lenalidomide Versus Rituximab Maintenance for Relapsed/Refractory Follicular, Marginal Zone or Mantle Cell Lymphoma. · Source last updated 2025-07-10

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

Measure
MEDIAN
Unit
Weeks
Interval / dispersion
95% Confidence Interval
Time frame
From the first dose date of maintenance therapy to the time of histological transformation (up to approximately 432 weeks)

What was measured

Time to histological transformation is defined as from the first dose date of maintenance therapy to the time of histological transformation as measured based on documentation of histological transformation (as assessed by the investigator). Analysis was based on Kaplan Meier estimates. In case of clinical suspicion of transformation, including rapid disease progression, unexpected changes in "B" symptoms or rapidly increasing LDH, a biopsy should be performed. In this clinical trial, histological transformation will be considered disease progression. This endpoint will not be calculated for participants randomized with transformed Follicular Lymphoma (tFL).

Analysis population: All randomized participants in Arm A and Arm B without transformed Follicular Lymphoma (tFL)

Groups in this outcome

Arm A: Lenalidomide + Rituximab

Maintenance Period (18 Cycles): lenalidomide 10 mg once daily on Days 1 to 21 of every 28-day Cycle for Cycles 13 to 30 AND rituximab 375 mg/m2 on Day 1 of every 28-day Cycle for Cycles 13, 15, 17, 19, 21, 23, 25, 27, and 29. Followed by Optional Maintenance Period (up to PD): Lenalidomide 10 mg once daily on Days 1 to 21 of every 28-day Cycle up to PD. This treatment will be at the discretion of the participant and the investigator.

Arm B: Rituximab

Maintenance Period (18 Cycles): participants received rituximab 375 mg/m2 on Day 1 of every 28-day Cycle for Cycles 13, 15, 17, 19, 21, 23, 25, 27, and 29

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

Analysis denominator · Participants

GroupSource count
Arm A: Lenalidomide + Rituximab133
Arm B: Rituximab129

Reported measurements

Source class 1
Values in Weeks · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Arm A: Lenalidomide + RituximabNANot reportedNANAMedian, lower and upper limit not calculated due to insufficient number of events.
Arm B: RituximabNANot reportedNANAMedian, lower and upper limit not calculated due to insufficient number of events.
Complete source fields
classes
  1. categories
    1. measurements
      1. comment
        Median, lower and upper limit not calculated due to insufficient number of events.
        group Id
        OG000
        lower Limit
        NA
        upper Limit
        NA
        value
        NA
      2. comment
        Median, lower and upper limit not calculated due to insufficient number of events.
        group Id
        OG001
        lower Limit
        NA
        upper Limit
        NA
        value
        NA
denoms
  1. counts
    1. group Id
      OG000
      value
      133
    2. group Id
      OG001
      value
      129
    units
    Participants
description
Time to histological transformation is defined as from the first dose date of maintenance therapy to the time of histological transformation as measured based on documentation of histological transformation (as assessed by the investigator). Analysis was based on Kaplan Meier estimates. In case of clinical suspicion of transformation, including rapid disease progression, unexpected changes in "B" symptoms or rapidly increasing LDH, a biopsy should be performed. In this clinical trial, histological transformation will be considered disease progression. This endpoint will not be calculated for participants randomized with transformed Follicular Lymphoma (tFL).
dispersion Type
95% Confidence Interval
groups
  1. description
    Maintenance Period (18 Cycles): lenalidomide 10 mg once daily on Days 1 to 21 of every 28-day Cycle for Cycles 13 to 30 AND rituximab 375 mg/m2 on Day 1 of every 28-day Cycle for Cycles 13, 15, 17, 19, 21, 23, 25, 27, and 29. Followed by Optional Maintenance Period (up to PD): Lenalidomide 10 mg once daily on Days 1 to 21 of every 28-day Cycle up to PD. This treatment will be at the discretion of the participant and the investigator.
    id
    OG000
    title
    Arm A: Lenalidomide + Rituximab
  2. description
    Maintenance Period (18 Cycles): participants received rituximab 375 mg/m2 on Day 1 of every 28-day Cycle for Cycles 13, 15, 17, 19, 21, 23, 25, 27, and 29
    id
    OG001
    title
    Arm B: Rituximab
param Type
MEDIAN
population Description
All randomized participants in Arm A and Arm B without transformed Follicular Lymphoma (tFL)
reporting Status
POSTED
time Frame
From the first dose date of maintenance therapy to the time of histological transformation (up to approximately 432 weeks)
title
Time to Histological Transformation
type
SECONDARY
unit Of Measure
Weeks

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

Preserved source evidence · Not medical advice