Study of Bortezomib and Dexamethasone With or Without Cyclophosphamide in Patients With Relapsed or Not Controllable Multiple Myeloma

Janssen-Cilag G.m.b.H96 enrolled

Overview

The purpose of this study is to compare bortezomib, dexamethasone and cyclophosphamide to bortezomib and dexamethasone alone for primary refractory or relapsed multiple myeloma.

This is a prospective, multi-centre, randomized (the study drug is assigned by chance), controlled, open-label (all people involved in the study know the identity of the assigned drug), parallel (each group of patients will be treated at the same time) group phase III study to determine the efficacy of the standard therapy of bortezomib and low dose dexamethasone in combination with or without continuous low dose oral cyclophosphamide for primary refractory or relapsed myeloma patients (1st - 3rd relapse). The study will consist of screening period, which may last from day -14 until day -1 before application of the first dose of bortezomib (on cycle 1, day 1), treatment phase begins on cycle 1 day 1 and continues until completion or discontinuation of all study drugs and follow-up phase. All patients will be followed up after end of treatment regardless of their response. Eligible patients will be randomized in 1:1 ratio to receive either treatment arms (Group A: receiving bortezomib plus dexamethasone or Group B receiving bortezomib plus dexamethasone plus cyclophosphamide). Patients will receive up to eight 3-weeks treatment cycles, unless they experience either unacceptable toxicity or if the patients request to withdraw from the study. The maximum number of cycles is dependent on patient response and investigator's discretion. It is recommended that patients with a confirmed complete response (CR) receive 2 additional cycles beyond a confirmation. Patients who do not achieve a CR but a partial response will receive a total of 8 cycles. For patients achieving stable disease it is within the investigator's discretion to continue study treatment beyond 6 cycles, after discussion with the sponsor. After completion of treatment the patients will be followed up every 12 weeks for up to 72 weeks. If the study is still ongoing a further follow up period will be done every 26 weeks until study end, or until the patient reaches progressive disease or start of alternative anti-myeloma therapy, if earlier. In case progressive disease (PD) has already been established during the treatment phase the patients will not enter the follow-up phase. In case of PD or start of alternative anti-myeloma treatment before the end of study the follow-up phase will be discontinued for the patient but the date of death of the patient will be documented (if applicable) before the end of study.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

NONE

Enrollment

Conditions

Multiple Myeloma

Interventions

DexamethasoneDRUG

Type=exact number, number=20, unit=mg, form=tablet, route=oral. The patients will receive 20 mg of dexamethasone on days 1+2,4+5,8+9,11+12 for 21 days for 8 cycles.

BortezomibDRUG

Type=exact number, number=1.3, unit=mg, form=injection, route=intravenous. The patients will receive 1.3mg/m2 on days 1,4,8,11 for 21 days for 8 cycles.

CyclophosphamideDRUG

Type=exact number, number=50, unit=mg, form=tablet, route=oral. The patients will receive 50 mg of cyclophosphamide once daily continuously from cycle 1 to 8.

Eligibility

Sex: ALLMin age: 18 Years

Medical Language ↔ Plain English

Inclusion Criteria: * Previously diagnosed with multiple myeloma * Primary refractory multiple myeloma or relapsed following 1 to 3 previous lines of therapy * Karnofsky performance status must be equal to 60 percentage (ie, better or equal performance than requiring some help and taking care of most personal requirements) * Has life expectancy estimated at screening must be of at least 6 months * Agrees to protocol-defined use of effective contraception Exclusion Criteria: * Not received more than three previous lines of therapy for multiple myeloma * Not received nitrosoureas or any other chemotherapy or immunotherapy or antibody therapy for multiple myeloma within 6 to 8 weeks before enrolment. Plasmapheresis must not be applied within 2 weeks before enrolment * Patients with peripheral neuropathy or neuropathic pain of Grade 2 or greater intensity * Patients with poorly controlled cardio vascular, vascular, pulmonary, gastro-intestinal, endocrine, neurological, psychiatric, hepatic, renal or metabolic diseases or hematological disorders * Not have oligosecretory or non-secretory multiple myeloma

Locations (40)

Unnamed facility

Augsburg, Germany

Outcomes

Primary Outcomes

Time to Progression of Disease

'Median time to progression of disease is assessed according to International Myeloma Working Group (IMWG) criteria or death from any cause. IMWG criteria: increase of \>=25% from lowest level in Serum M-component or (the absolute increase must be \>=0.5 gram per deciliter \[g/dL\]); Urine M component or (the absolute increase must be \>=200 milligram per 24 hour. Only in participants without measurable serum and urine M-protein levels: the difference between involved and uninvolved free light chain levels. The absolute increase \>10 mg/dL. Bone marrow plasma cell percentage \>=10%. Definite development of new bone lesions or soft tissue plasmacytomas or definite increase in the size of existing. Development of hypercalcemia. Participants who died or dropped out due to any reason without progression will be censored with the day of death or drop-out, respectively and who are alive at the end of the study without any progression was censored with the last available date.

Time frame: From the date of randomization until the disease progression or participant's death from any cause whichever occurred first, as assessed up to 72 weeks after end of treatment visit (ie, 46 days after last dose of study medication)

Secondary Outcomes

Progression-Free Survival (PFS)

PFS is defined as time from randomization to myeloma progression according to International Myeloma Working Group (IMWG) criteria or death from any cause. IMWG criteria: increase of ≥25 percent from lowest response level in Serum M-component and/or (the absolute increase must be ≥0.5 g/dL) Urine M-component and/or (the absolute increase must be ≥200 mg/24 hour. Only in participants without measurable serum and urine M-protein levels: the difference between involved and uninvolved free light chain levels. The absolute increase must be \>10 mg/dL. Bone marrow plasma cell percentage: the absolute percent must be ≥10 percent. Definite development of new bone lesions or soft tissue plasmacytomas or definite increase in the size of existing bone lesions or soft tissue plasmacytomas. Development of hypercalcemia (corrected serum calcium \>11.5 mg/dL or 2.65mmol/L) that can be attributed solely to the plasma cell proliferative disorder. PFS included disease progression as well as death.

Time frame: From the date of randomization until the disease progression or participant's death from any cause whichever occured first, as assessed up to 72 weeks after end of treatment visit (ie, 46 days after last dose of study medication)

Data from ClinicalTrials.gov

This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.