Vorinostat, Bortezomib, and Doxorubicin Hydrochloride Liposome in Treating Patients With Relapsed or Refractory Multiple Myeloma

OBJECTIVES:

Primary

- To determine the maximum tolerated dose of vorinostat when added to the standard regimen
of bortezomib and pegylated liposomal doxorubicin hydrochloride in patients with
relapsed or refractory multiple myeloma.

- To identify the dose-limiting toxicities of this regimen in these patients.

Secondary

- To gain preliminary evidence of antitumor activity of this regimen in these patients.

- To assess the degree of proteasome inhibition achieved with this regimen in these
patients.

- To evaluate the accumulation of acetylated alpha-tubulin after treatment with
vorinostat.

- To evaluate overall survival, time to progression, and progression-free survival of
patients treated with this regimen.

OUTLINE: This is a multicenter, dose escalation study of vorinostat.

Patients receive oral vorinostat once daily on days 1,2; 4,5; 8, 9; 11, 12; bortezomib IV on
days 1, 4, 8, and 11, and pegylated liposomal doxorubicin hydrochloride IV on day 4. Courses
repeat every 21 days in the absence of disease progression or unacceptable toxicity.

Blood samples are collected periodically for proteasome inhibition assays and acetylated
alpha-tubulin studies.

After completion of study treatment, patients are followed at 1 and 3 months.

DISEASE CHARACTERISTICS:

- Diagnosis of multiple myeloma

- Relapsed or refractory disease

PATIENT CHARACTERISTICS:

- ECOG performance status 0-2

- Life expectancy ≥ 3 months

- ANC ≥ 1.0 x 10^9/L (no granulocyte growth factor support, e.g., G-CSF or GM-CSF
allowed)

- Platelet count ≥ 100 x 10^9/L (erythropoietin allowed, no platelet or RBC transfusion
within the past 2 weeks)

- Hemoglobin ≥ 8 g/dL (erythropoietin allowed, no platelet or RBC transfusion within the
past 2 weeks)

- Creatinine clearance ≥ 30 mL/min

- AST or ALT ≤ 2.5 times upper limit of normal (ULN)

- Total bilirubin ≤ 1.5 times ULN

- Not pregnant or nursing

- Negative pregnancy test

- Fertile patients must use effective contraception during and for 3 months after
completion of study treatment

- LVEF ≥ 45% by MUGA or ECHO

- Symptomatic neuropathy < grade 2

- No known history of HIV

- No active or serious infection, medical or psychiatric illness that would preclude
study participation

- No active hepatitis B or C infection

- No other prior or concurrent malignancy except for adequately treated basal cell or
squamous cell carcinoma of the skin, in situ malignancy, low-risk prostate cancer
after curative therapy, or other cancer for which the patient has been disease-free
for ≥ 3 years

- No history of hypersensitivity reaction to bortezomib or any of its components (boron,
mannitol), vorinostat, doxorubicin hydrochloride, or any of the components of PLD

- No serum potassium ≤ 3.0 or serum magnesium ≤ 1.6 that cannot be corrected with
supplementation are excluded

- Patients must have adequate cardiovascular function, defined by all of the following:

- No EKG evidence of active, clinically significant conduction system abnormalities

- No EKG evidence of QTc prolongation > grade 2

- NOTE: Any EKG abnormality at screening has to be documented by the investigator as not
medically significant.

PRIOR CONCURRENT THERAPY:

- No limit to number of prior treatment regimens

- At least 30 days since prior therapy and recovered

- At least 3 months since prior autologous stem cell transplantation and recovered

- Prior allogeneic stem cell or bone marrow transplantation allowed provided the
following criteria are met:

- More than 1 year since transplantation

- No longer receiving immunosuppressive therapy or treatment for graft-versus-host
disease (GVHD) prophylaxis

- No active GVHD

- No active, uncontrolled infections

- No major surgery within the past 3 weeks

- No prior anthracycline dose > 360 mg/m^2 for doxorubicin hydrochloride (including
pegylated liposomal doxorubicin hydrochloride [PLD]) or 720 mg/m^2 for epirubicin
hydrochloride

- No prior or concurrent histone deacetylase inhibitor (e.g., valproic acid)

- No concurrent filgrastim (G-CSF) or sargramostim (GM-CSF) during course 1

- No other concurrent investigational or anticancer agent