Skip to content
← Full study record

NCT00098475 · OUTCOME

Proportion of Patients With Objective Response (First Phase, Step 2)

Lenalidomide and Dexamethasone With or Without Thalidomide in Treating Patients With Multiple Myeloma · Source last updated 2026-08-28

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

Measure
NUMBER
Unit
Proportion of patients
Interval / dispersion
95% Confidence Interval
Time frame
Assessed every 4 weeks for 16 weeks during Step 2

What was measured

Objective response is defined as either complete response (CR) or partial response (PR). Patients who have complete disappearance of an M-protein and no evidence of myeloma in the bone marrow are considered to have CR. PR requires all the following: (1) ≥50% reduction in the level of the serum monoclonal paraprotein. (2) Reduction in 24-hour urinary light chain excretion either by ≥90% or to \<200 mg. (3)For patients with non-secretory (or oligosecretory) myeloma only, a ≥50% reduction in plasma cells in a bone marrow aspirate and on trephine biopsy must be documented. (4)50% reduction in size of soft tissue plasmacytoma (by radiography or clinical examination). (5) No increase in the number or size of lytic bone lesions (development of a compression fracture does not exclude response). As the expansion phase was a substudy terminated early with only 7 patients enrolled, the clinical results presented are mainly for the first phase only.

Analysis population: Only eligible patients were included in this analysis.

Groups in this outcome

Arm I (Lenalidomide, Dexamethasone)

Patients receive oral lenalidomide once daily on days 1-21, oral aspirin (or other deep vein thrombosis prophylaxis at the discretion of the principal investigator) once daily on days 1-28, and standard-dose oral dexamethasone once daily on days 1-4, 9-12, and 17-20. Patients with minimal response or no response after 4 cycles of treatment could register for Step 2 treatment with thalidomide and high-dose dexamethasone. Thalidomide was given orally once daily on days 1-28, and dexamethasone once daily on days 1-4, 9-12, and 17-20 for 4 cycles.

Arm II (Lenalidomide, Low-dose Dexamethasone)

Patients receive oral lenalidomide and acetylsalicylic acid as in arm I and low-dose oral dexamethasone once daily on days 1, 8, 15, and 22. Patients with minimal response or no response after 4 cycles of treatment could register for Step 2 treatment with thalidomide and low-dose dexamethasone. Thalidomide was given orally once daily on days 1-28, and dexamethasone once daily on days 1, 8, 15, and 22 for 4 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
Arm I (Lenalidomide, Dexamethasone)2
Arm II (Lenalidomide, Low-dose Dexamethasone)9

Reported measurements

Source class 1
Values in Proportion of patients · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Arm I (Lenalidomide, Dexamethasone)0Not reported0.00.842Not reported
Arm II (Lenalidomide, Low-dose Dexamethasone)0Not reported0.00.336Not reported
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        0.0
        upper Limit
        0.842
        value
        0
      2. group Id
        OG001
        lower Limit
        0.0
        upper Limit
        0.336
        value
        0
denoms
  1. counts
    1. group Id
      OG000
      value
      2
    2. group Id
      OG001
      value
      9
    units
    Participants
description
Objective response is defined as either complete response (CR) or partial response (PR). Patients who have complete disappearance of an M-protein and no evidence of myeloma in the bone marrow are considered to have CR. PR requires all the following: (1) ≥50% reduction in the level of the serum monoclonal paraprotein. (2) Reduction in 24-hour urinary light chain excretion either by ≥90% or to \<200 mg. (3)For patients with non-secretory (or oligosecretory) myeloma only, a ≥50% reduction in plasma cells in a bone marrow aspirate and on trephine biopsy must be documented. (4)50% reduction in size of soft tissue plasmacytoma (by radiography or clinical examination). (5) No increase in the number or size of lytic bone lesions (development of a compression fracture does not exclude response). As the expansion phase was a substudy terminated early with only 7 patients enrolled, the clinical results presented are mainly for the first phase only.
dispersion Type
95% Confidence Interval
groups
  1. description
    Patients receive oral lenalidomide once daily on days 1-21, oral aspirin (or other deep vein thrombosis prophylaxis at the discretion of the principal investigator) once daily on days 1-28, and standard-dose oral dexamethasone once daily on days 1-4, 9-12, and 17-20. Patients with minimal response or no response after 4 cycles of treatment could register for Step 2 treatment with thalidomide and high-dose dexamethasone. Thalidomide was given orally once daily on days 1-28, and dexamethasone once daily on days 1-4, 9-12, and 17-20 for 4 cycles.
    id
    OG000
    title
    Arm I (Lenalidomide, Dexamethasone)
  2. description
    Patients receive oral lenalidomide and acetylsalicylic acid as in arm I and low-dose oral dexamethasone once daily on days 1, 8, 15, and 22. Patients with minimal response or no response after 4 cycles of treatment could register for Step 2 treatment with thalidomide and low-dose dexamethasone. Thalidomide was given orally once daily on days 1-28, and dexamethasone once daily on days 1, 8, 15, and 22 for 4 cycles.
    id
    OG001
    title
    Arm II (Lenalidomide, Low-dose Dexamethasone)
param Type
NUMBER
population Description
Only eligible patients were included in this analysis.
reporting Status
POSTED
time Frame
Assessed every 4 weeks for 16 weeks during Step 2
title
Proportion of Patients With Objective Response (First Phase, Step 2)
type
SECONDARY
unit Of Measure
Proportion of patients

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

Preserved source evidence · Not medical advice