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Panobinostat, Gemcitabine Hydrochloride, Busulfan, and Melphalan Before Stem Cell Transplant in Treating Patients With Refractory or Relapsed Multiple Myeloma

Panobinostat Combined With High-Dose Gemcitabine/Busulfan/Melphalan With Autologous Stem Cell Transplant for Patients With Refractory/Relapsed Myeloma

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02506959
Enrollment
83
Registered
2015-07-23
Start date
2015-09-14
Completion date
2024-06-03
Last updated
2025-03-18

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Plasma Cell Leukemia, Plasmacytoma, Recurrent Plasma Cell Myeloma, Refractory Plasma Cell Myeloma

Brief summary

This phase II trial studies how well panobinostat, gemcitabine hydrochloride, busulfan, and melphalan before stem cell transplant work in treating patients with multiple myeloma that does not respond to treatment (refractory) or has returned (relapsed). Panobinostat may stop the growth of cancer cells by blocking some of the enzymes needed for cell growth. Giving high-dose chemotherapy, such as gemcitabine hydrochloride, busulfan, and melphalan, before a peripheral blood stem cell transplant helps kill any cancer cells that are in the body and helps make room in the patient's bone marrow for new blood-forming cells (stem cells) to grow. Previously collected stem cells are then returned to the patient to replace the blood-forming cells that were destroyed by the chemotherapy.

Detailed description

PRIMARY OBJECTIVES: I. To determine the progression-free survival (PFS) in patients with refractory or relapsed myeloma receiving panobinostat/gemcitabine hydrochloride (gemcitabine)/busulfan/melphalan (panobinostat/Gem/Bu/Mel) with autologous stem-cell transplant, either as a first or a salvage stem-cell transplant. SECONDARY OBJECTIVES: I. To evaluate the complete response (CR) rate. II. To determine the overall survival (OS). III. To determine the CR + very good partial remission (VGPR) rate. IV. To determine the overall response rate (ORR). V. To determine minimal residual disease posttransplant, measured by multiparametric flow cytometry (MFC). VI. To describe the toxicity profile of panobinostat/Gem/Bu/Mel. VII. To analyze the predictive value of pretransplant levels in myeloma cells of X-box binding protein 1 (XBP1), inositol-requiring enzyme 1 (IRE1), unspliced XBP1 (XBP1u), sliced XBP1 (XPB1s), XBP1u/XPBs ratio and v-myc myelocytomatosis viral oncogene homolog (avian) (Myc), by analyzing their correlation with CR, VGPR+CR and response rate (RR). VIII. To study the prognostic effect of pretransplant levels in myeloma cells of XBP1, IRE1, XBP1u, XPB1s, XBP1u/XPBs ratio and Myc, by analyzing their correlation with PFS and OS. OUTLINE: Patients receive panobinostat orally (PO) once daily (QD) on days -9 to -2, gemcitabine hydrochloride intravenously (IV) over 4 hours on days -8 and -3, busulfan IV over 3 hours on days -8 to -5, and melphalan IV over 30 minutes on days -3 and -2. Patients then undergo autologous peripheral blood stem cell transplant on day 0. After completion of study treatment, patients are followed up at 1 month, 100 days, 6 months, 1 year, and then every 3-6 months for at least 2 years.

Interventions

PROCEDUREAutologous Hematopoietic Stem Cell Transplantation

Undergo autologous peripheral blood stem cell transplant

DRUGBusulfan

Given IV

DRUGGemcitabine Hydrochloride

Given IV

DRUGMelphalan

Given IV

DRUGPanobinostat

Given PO

PROCEDUREPeripheral Blood Stem Cell Transplantation

Undergo autologous peripheral blood stem cell transplant

OTHERPharmacological Study

Correlative studies

Sponsors

National Cancer Institute (NCI)
CollaboratorNIH
M.D. Anderson Cancer Center
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
No

Inclusion criteria

* Refractory or relapsed myeloma, defined as one or more of the following: * Treated with first-line therapy including at least 2 cycles of lenalidomide, bortezomib or thalidomide, and one or more of the following: * Less than partial response (PR) to first-line therapy * Relapse after first (1st) line therapy * High-risk cytogenetics, defined by deletion (del)(13q) by conventional cytogenetics, or by del(17p), t(4;14), t(14;16), t(14;20) or 1q+ by fluorescence in situ hybridization (FISH) * Relapse after a prior autologous stem cell transplant (ASCT) * Plasma cell leukemia * Soft tissue plasmacytoma * Serum creatinine =\< 1.8 mg/dL and/or estimated serum creatinine clearance \>= 50 ml/min * Serum glutamic oxaloacetic transaminase (SGOT) and/or serum glutamate pyruvate transaminase (SGPT) =\< 3 x upper limit of normal * Serum bilirubin =\< 2 x upper limit of normal, unless proven to be due to disease involvement * Alkaline phosphatase =\< 2 x upper limit of normal, unless proven to be due to disease involvement * Adequate pulmonary function with forced expiratory volume in 1 second (FEV1), forced vital capacity (FVC) and diffusion capacity of the lung for carbon monoxide (DLCO) \>= 50% of expected corrected for hemoglobin and/or volume * Adequate cardiac function with left ventricular ejection fraction \>= 40% * No uncontrolled arrhythmias or symptomatic cardiac disease * Clinically euthyroid; note: patients are permitted to receive thyroid hormone supplements to treat underlying hypothyroidism * Zubrod performance status \< 2 * Negative beta-human chorionic gonadotropin (HCG) test in a woman of child-bearing potential, defined as not post-menopausal for 12 months or no previous surgical sterilization * Availability of \>= 2.5 million cluster of differentiation (CD)34+ cells/kg previously apheresed * Ability to provide written informed consent

Exclusion criteria

* Prior whole brain irradiation * Having received radiation therapy to head and neck (excluding eyes), and internal organs of chest, abdomen or pelvis in the month prior to enrollment * Active hepatitis B, either active carrier (hepatitis B surface antigen positive \[HBsAg +\]) or viremic (hepatitis B virus \[HBV\] deoxyribonucleic acid \[DNA\] \>= 10,000 copies/mL, or \>= 2,000 IU/mL) * Evidence of either cirrhosis or stage 3-4 liver fibrosis in patients with chronic hepatitis C or positive hepatitis C serology * Active infection requiring parenteral antibiotics * Known positivity for human immunodeficiency virus (HIV) * Autologous stem-cell transplant in the previous six months * Needing valproic acid for any medical condition during the study or within 5 days prior to first panobinostat treatment * Impairment of gastrointestinal (GI) function or GI disease that may significantly alter the absorption of panobinostat * Other concurrent severe and/or uncontrolled medical conditions (e.g., uncontrolled diabetes or active or uncontrolled infection) including abnormal laboratory values, that could cause unacceptable safety risks or compromise compliance with the protocol * Impaired cardiac function or clinically significant cardiac diseases, including any one of the following: * History or presence of sustained ventricular tachyarrhythmia; (patients with a history of atrial arrhythmia are eligible but should be discussed with Secura Bio, Inc (Secura Bio) prior to enrollment) * Any history of ventricular fibrillation or torsade de pointes * Bradycardia defined as heart rate (HR) \< 50 beats per minute (bpm); patients with pacemakers are eligible if HR \>= 50 bpm * Screening electrocardiogram (ECG) with a corrected QT (QTc) \> 470 msec * Right bundle branch block + left anterior hemiblock (bifascicular block) * Myocardial infarction or unstable angina =\< 12 months prior to starting study drug * Other clinically significant heart disease (e.g., congestive heart failure \[CHF\] New York \[NY\] Heart Association class III or IV , uncontrolled hypertension, history of labile hypertension, or history of poor compliance with an antihypertensive regimen) * Have undergone major surgery =\< 4 weeks prior to starting study drug or who have not recovered from side effects of such therapy * Prior malignancy with in the last 5 years (except for basal or squamous cell carcinoma, or in situ cancer of the cervix) * Any significant history of non-compliance to medical regimens or unwilling or unable to comply with the instructions given to him/her by the study staff * Received targeted agents within 2 weeks or within 5 half-lives of the agent and active metabolites (whichever is longer) and who have not recovered from side effects of those therapies * Having received immunotherapy or chemotherapy within 2 weeks; or radiation therapy to \> 30% of marrow-bearing bone within =\< 2 weeks prior to starting study treatment; or who have not yet recovered from side effects of such therapies * Grade \>= 3 nonhematological toxicity from prior therapy that has not resolved to =\< grade 1

Design outcomes

Primary

MeasureTime frameDescription
Progression Free Survival (PFS)1 yearNumber of participants alive and disease free one year post auto transplant in patients with refractory or relapsed myeloma receiving panobinostat/gemcitabine/busulfan/melphalan (panobinostat/Gem/Bu/Mel) with autologous stem-cell transplant, either as a first or a salvage stem-cell transplant.

Secondary

MeasureTime frameDescription
Overall Survival (OS)Up to 2 yearsNumber of participants with refractory or relapse Myeloma who still remain alive two years post transplant
Participants Who Experienced Grade 3 or Higher Adverse EventsUp to day 100Number of Participants who experienced grade 3 or higher Adverse Events during the first 100 days of the transplant.

Countries

United States

Participant flow

Participants by arm

ArmCount
Cohort 1_1st Auto TP Conditioned With Panobinostat and Gem/Bu/Mel
Patients receive panobinostat PO QD on days -9 to -2, gemcitabine hydrochloride IV over 4 hours on days -8 and -3, busulfan IV over 3 hours on days -8 to -5, and melphalan IV over 30 minutes on days -3 and -2. Patients then undergo autologous peripheral blood stem cell transplant on day 0.
50
Cohort 2_2nd Auto TP Conditioned With Panobinostat and Gem/Bu/Mel
Patients receive panobinostat PO QD on days -9 to -2, gemcitabine hydrochloride IV over 4 hours on days -8 and -3, busulfan IV over 3 hours on days -8 to -5, and melphalan IV over 30 minutes on days -3 and -2. Patients then undergo autologous peripheral blood stem cell transplant on day 0.
33
Total83

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyPhysician Decision21

Baseline characteristics

CharacteristicCohort 1_1st Auto TP Conditioned With Panobinostat and Gem/Bu/MelCohort 2_2nd Auto TP Conditioned With Panobinostat and Gem/Bu/MelTotal
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
2 Participants0 Participants2 Participants
Age, Categorical
Between 18 and 65 years
48 Participants33 Participants81 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
9 Participants2 Participants11 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
41 Participants31 Participants72 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Region of Enrollment
United States
50 Participants33 Participants83 Participants
Sex: Female, Male
Female
15 Participants15 Participants30 Participants
Sex: Female, Male
Male
35 Participants18 Participants53 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
23 / 5017 / 33
other
Total, other adverse events
47 / 5030 / 33
serious
Total, serious adverse events
2 / 504 / 33

Outcome results

Primary

Progression Free Survival (PFS)

Number of participants alive and disease free one year post auto transplant in patients with refractory or relapsed myeloma receiving panobinostat/gemcitabine/busulfan/melphalan (panobinostat/Gem/Bu/Mel) with autologous stem-cell transplant, either as a first or a salvage stem-cell transplant.

Time frame: 1 year

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Cohort 1_1st Auto TP Conditioned With Panobinostat and Gem/Bu/MelProgression Free Survival (PFS)38 Participants
Cohort 2_2nd Auto TP Conditioned With Panobinostat and Gem/Bu/MelProgression Free Survival (PFS)24 Participants
Secondary

Overall Survival (OS)

Number of participants with refractory or relapse Myeloma who still remain alive two years post transplant

Time frame: Up to 2 years

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Cohort 1_1st Auto TP Conditioned With Panobinostat and Gem/Bu/MelOverall Survival (OS)27 Participants
Cohort 2_2nd Auto TP Conditioned With Panobinostat and Gem/Bu/MelOverall Survival (OS)16 Participants
Secondary

Participants Who Experienced Grade 3 or Higher Adverse Events

Number of Participants who experienced grade 3 or higher Adverse Events during the first 100 days of the transplant.

Time frame: Up to day 100

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Cohort 1_1st Auto TP Conditioned With Panobinostat and Gem/Bu/MelParticipants Who Experienced Grade 3 or Higher Adverse Events47 Participants
Cohort 2_2nd Auto TP Conditioned With Panobinostat and Gem/Bu/MelParticipants Who Experienced Grade 3 or Higher Adverse Events29 Participants

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026