Clinical trial NCT03336073: Carfilzomib, Cyclophosphamide, Dexamethasone in Multiple Myeloma
Official title: Carfilzomib and Dexamethasone in Combination With Cyclophosphamide vs. Carfilzomib and Dexamethasone in Patients With Relapsed/Refractory Multiple Myeloma: a Phase II Randomized Controlled Trial
Study type: INTERVENTIONAL
Overall status: UNKNOWN
Phase: PHASE2
Conditions: Multiple Myeloma
Lead sponsor: PETHEMA Foundation
Sponsor class: OTHER
First posted: 2017-11-08
Enrollment: 199
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: TREATMENT

Brief summary: This is a multicenter, open label, phase II randomized controlled study that will evaluate the efficacy of carfilzomib and dexamethasone in combination with cyclophosphamide in R/R MM patients.

For this purpose, R/R MM patients that have received 1-3 prior lines of therapy, and who are not primary refractory or refractory to proteasome inhibitors will be randomized to receive:

* Experimental arm: carfilzomib at a dose of 70 mg/m2 (20 mg/m2 only in the first infusion) intravenously (iv) on days 1, 8, and 15, dexamethasone by mouth (po) at a dose of 20 mg (10 mg for patients \>75 years) days 1, 2, 8, 9, 15 and 16 and cyclophosphamide at a dose of 300 mg/m2 iv on days 1, 8 and 15, in 28 days cycles; or
* Control arm: the same treatment but without cyclophosphamide.

Once the first 12 cycles are administered, treatment will be administered on days 1 and 15 of each cycle and the visit and doses on day 8 will be omitted in both study arms.

Patients older than 75 years will receive in both arms carfilzomib at a dose of 56 mg/m2 (20 mg/m2 only in the first infusion) during the cycles 1 and 2. If tolerability is acceptable, the dose could be increased up to 70 mg/m2 since the cycle 3.

Treatment will be continued until progression, unacceptable toxicity or investigator or patient decision.

Detailed description: Treatment will consist of 28-days cycles with:

* Arm 1 (experimental arm):

  * Carfilzomib administered iv at a dose of 70 mg/m2 (20 mg/m2 only in the first infusion) iv on days 1, 8 and 15.
  * Dexamethasone at a dose of 20 mg po (10 mg for patients \>75 years) days 1, 2, 8, 9, 15 and 16.
  * Cyclophosphamide at a dose of 300 mg/m2 iv on days 1, 8 and 15
* Arm 2 (control arm):

  * Carfilzomib administered iv at a dose of 70 mg/m2 (20 mg/m2 only in the first infusion) iv on days 1, 8, and 15.
  * Dexamethasone at a dose of 20 mg po (10 mg for patients \>75 years) days 1, 2, 8, 9, 15 and 16.

Once the first 12 cycles are administered, treatment will be administered on days 1 and 15 of each cycle and the visit and doses on day 8 will be omitted in both study arms.

Patients older than 75 years will receive in both arms carfilzomib at a dose of 56 mg/m2 (20 mg/m2 only in the first infusion) during the cycles 1 and 2. If tolerability is acceptable, the dose could be increased up to 70 mg/m2 since the cycle 3.

Treatments will be administered until progressive disease (PD) or unacceptable toxicity. Carfilzomib and cyclophosphamide will be provided by the sponsor. Dexamethasone may be utilized per a site's standard practice and will not be provided by the sponsor.

Eligibility criteria: Inclusion Criteria:

1. Age ≥18 years.
2. Performance status (ECOG) \<2.
3. Patient is, in the investigator's opinion, willing and able to comply with the protocol requirements.
4. Patient has given voluntary written informed consent before performance of any study-related procedure not part of normal medical care, with the understanding that consent may be withdrawn by the patient at any time without prejudice to their future medical care.
5. Patients previously diagnosed with MM according to the IMWG criteria (Lancet Oncology 2014) that after previous treatment with 1-3 regimens require therapy due to a relapse/progression of the disease.
6. Patients must have measurable disease, defined as follows:

   * Serum monoclonal protein ≥ 0.5 g/L, or
   * Urine light-chain excretion of ≥ 0.2g /24 hours, or
   * Abnormal ratio of serum free light chains (FLCs) plus involved FLC level ≥100 mg/L.

Exclusion Criteria:

1. Primary refractory patients defined as not having achieved at least a PR with a prior therapy.
2. Refractoriness to prior proteasome inhibitor therapies, defined as not having achieved at least MR or having progressed under treatment or in the first 60 days after the last dose of the proteasome inhibitor.
3. Biochemical and haematological abnormalities as specified below:

   * Hemoglobin \< 8.0 g/dL.
   * Platelet count \<75x109/L without previous platelet transfusions in the last 7 days. If bone marrow infiltration is greater than 50%, a platelet count of ≥50x109/L is required.
   * Absolute neutrophil count (ANC) \< 0.75 x109/L without G-CSF support in the last 7 days.
   * Aspartate transaminase (AST): \> 2.5 times the upper limit of normal.
   * Alanine transaminase (ALT): \> 2.5 times the upper limit of normal.
   * Calculated or measured creatinine clearance: \<30 mL/min (calculated from the Cockcroft and Gault formula, specified in Appendix C).
4. Left ventricle ejection fraction \< 50%.
5. Absence of recovery from any significant non-haematological toxicity derived from previous treatments. The presence of alopecia and NCI-CTC grade \< 2 symptomatic peripheral neuropathy is allowed.
6. Pregnant or breastfeeding women; men and women of reproductive potential who are not using effective contraceptive methods (double barrier method, intrauterine device, and oral contraception).
7. Previous history of any other neoplastic disease in the last five years (except basal cell carcinoma, skin epithelioma or carcinoma in situ of any site).
8. Other relevant diseases or adverse clinical conditions:

   * Congestive heart failure or angina pectoris, myocardial infarction within 12 months before inclusion in the study.
   * Uncontrolled arterial hypertension or cardiac arrhythmias (i.e. requiring a change in medication within the last 3 months or a hospital admission within the past 6 months).
   * History of significant neurological or psychiatric disorders.
   * Active infection
   * Significant non-neoplastic liver disease (e.g. cirrhosis, active chronic hepatitis).
9. Patient is known to be human immunodeficiency virus (HIV) positive, hepatitis B surface antigen-positive or to suffer active hepatitis C infection
10. The patient has received concomitant anti-myeloma therapy within 14 days prior to Day 1 of Cycle 1.
11. Limit to the patient's ability to comply with the treatment or follow-up protocol.
12. Uncontrolled endocrine diseases (e.g. diabetes mellitus, hypothyroidism or hyperthyroidism) (i.e. requiring relevant changes in medication within the last month, or hospital admission within the last 3 months).

Primary outcomes:
measure: Progression free survival (PFS)
timeFrame: 36 months
Secondary outcomes:
measure: Safety of carfilzomib, dexamethasone and cyclophosphamide in number of participants with treatment-related adverse events as assessed by CTCAE v4.0
timeFrame: 2 years
measure: Efficacy of carfilzomib, dexamethasone and cyclophosphamide in number and rate of responses obtained
timeFrame: 2 years
measure: Time-to progression (TTP)
timeFrame: 36 months
measure: Overall Survival (OS)
timeFrame: 36 months
measure: Efficacy of carfilzomib, dexamethasone and cyclophosphamide in rate of achievement of immunophenotypic CR
timeFrame: 2 years
Other outcomes:
Locations:
city: Tenerife
country: Spain
facility: Hospital Universitario de Canarias
state: Islas Canarias
city: Barcelona
country: Spain
facility: H.Universitari Germans Trias I Pujol de Badalona
city: Barcelona
country: Spain
facility: Hospital Clínic i Provincial de Barcelona
city: Barcelona
country: Spain
facility: Hospital de la Santa Creu i Sant Pau
city: Barcelona
country: Spain
facility: Ico L'Hospitalet
city: Cáceres
country: Spain
facility: Complejo Hospitalario de Cáceres
city: Gijón
country: Spain
facility: Hospital de Cabueñes
city: Granada
country: Spain
facility: Centro Hospitalario Universitario de Granada
city: León
country: Spain
facility: Hospital de León
city: Madrid
country: Spain
facility: H. 12 de Octubre
city: Madrid
country: Spain
facility: H. Ramón y Cajal
city: Madrid
country: Spain
facility: Hospital Sanchinarro
city: Murcia
country: Spain
facility: Hospital Universitario Morales Meseguer
city: Murcia
country: Spain
facility: Hospital Virgn de la Arrixaca
city: Málaga
country: Spain
facility: Hospital Costa del Sol
city: Oviedo
country: Spain
facility: Hospital Central de Asturias
city: Palma De Mallorca
country: Spain
facility: Hospital de Son Llàtzer
city: Pamplona
country: Spain
facility: Clinica Universitaria de Navarra
city: Salamanca
country: Spain
facility: Hospital Clínico Universitario de Salamanca
city: Santiago De Compostela
country: Spain
facility: Hospital Universitario de Santiago
city: Segovia
country: Spain
facility: Hospital de Segovia
city: Sevilla
country: Spain
facility: Complejo Hospitalario Regional Virgen Del Rocío
city: Toledo
country: Spain
facility: Hospital de Toledo
city: Zaragoza
country: Spain
facility: Hospital Lozano Blesa
Study officials:
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