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Table 1 MUK eight study inclusion and exclusion criteria

From: The MUK eight protocol: a randomised phase II trial of cyclophosphamide and dexamethasone in combination with ixazomib, in relapsed or refractory multiple myeloma (RRMM) patients who have relapsed after treatment with thalidomide, lenalidomide and a proteasome inhibitor

Inclusion criteria

Able to give informed consent and willing to follow study protocol assessments

Aged 18 years or over

Participants with confirmed MM based on IMWG criteria, 2009

Measurable disease with at least one of the following:

  Paraprotein > 5 g/L or 0.5 g/l for IgD subtype

  Serum free light chains > 100 mg/L with abnormal ratio for light chain only myeloma

  Bence Jones protein > 200 mg/L

Participants with relapsed or relapsed refractory myeloma and now require further treatment following exposure to thalidomide, lenalidomide and a proteasome inhibitor regardless of response to these.

Participants for which CD would be a suitable treatment

ECOG Performance Status ≤ 2

Required laboratory values within 14 days prior to start of treatment:

  Platelet count ≥ 50 × 109/L. Platelet count of 30–50 is acceptable if bone marrow aspirate shows tumour replacement of > 50%. Platelet support is permitted within 14 days prior to randomisation although platelet transfusions to help patients meet eligibility criteria are not allowed within 72 h prior to the blood sample to confirm protocol eligibility.

  Absolute neutrophil count ≥ 1.0 × 109/L. Growth factor support is not permitted within 14 days prior to randomisation

  Haemoglobin > 90 g/L. Blood support is permitted

  ALT and / or AST ≤ 3 × upper limit of normal

  Creatinine clearance ≥ 30 ml/min (using Cockcroft Gault formula)

  Bilirubin ≤ 1.5 × upper limit of normal

Female participants should avoid becoming pregnant and male participants should avoid impregnating a female partner. Both non-sterilised and sterilised females and males of reproductive age should use effective methods of contraception during the entire trial treatment (including treatment breaks) and up to 90 days after the last dose of trial treatment. Females of child bearing potential will require a negative pregnancy test to be performed.

Post allograft patients may be included if > 12 months from transplant.

Exclusion criteria

Participants meeting any of the following exclusion criteria are not eligible to register for this trial.

The following participants will be excluded:

  Those with non-measurable disease

  Those with a solitary bone or solitary extramedullary plasmacytoma

  Plasma cell leukaemia

Prior malignancy other than those treated with curative surgery.

Participants with a known or underlying uncontrolled concurrent illness that, in the investigators opinion, would make the administration of the study drug hazardous or circumstances that could limit compliance with the study, including, but not limited to the following: acute or chronic graft versus host disease, uncontrolled hypertension, congestive heart failure ≥ NYHA Class III, unstable angina pectoris, myocardial infarction within past 6 months, uncontrolled cardiac arrhythmia, renal failure, psychiatric or social conditions that may interfere with participant compliance, or any other condition (including laboratory abnormalities) that in the opinion of the Investigator places the participant at unacceptable risk for adverse outcome if he/she were to participate in the study.

Participants who have previously received MLN9708/ixazomib in a trial. Previous experimental agents or approved anti-tumour treatment within 28 days before the date of randomisation.

A maximum of 160 mg of dexamethasone (in 40 mg blocks) may be given between screening and the beginning of initial treatment if medically required but should be stopped before trial treatment starts. Bisphosphonates for bone disease are also permitted.

Participants with a history of a refractory nausea, diarrhoea, vomiting, malabsorption, gastrointestinal surgery or other procedures that might, in the opinion of the Investigator, interfere with the absorption or swallowing of the study drug(s)

Peripheral neuropathy of ≥ grade 2 (or grade 1 with pain) severity (as per NCI-CTCAEv4.0)

Gastrointestinal disorders that may interfere with absorption of the study drug

Active symptomatic fungal, bacterial, and/or viral infection including known active HIV or known viral (A, B or C) hepatitis

Female participants who are lactating or have a positive pregnancy test at screening

Known allergy to any of the study medications, their analogues, or excipients in the various formulations of any agent that would prevent the participant receiving these as directed in the protocol

Systemic treatment, within 14 days prior to the first dose of ixazomib, with strong inhibitors of CYP1A2 (fluvoxamine, enoxacin, ciprofloxacin), strong inhibitors of CYP3A (clarithromycin, telithromycin, itraconazole, voriconazole, ketoconazole, nefazodone, posaconazole) or strong CYP3A inducers (rifampin, rifapentine, rifabutin, carbamazepine, phenytoin, phenobarbital), or use of Ginkgo biloba or St. John’s wort

Major surgery within 14 days prior to the date of randomisation

Radiotherapy within 7 days prior to randomisation for palliative pain control or therapeutic radiotherapy within 14 days prior to randomisation

Myeloma involving the Central Nervous System.