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Emerging Therapies

The developments in myeloma treatment continue to evolve and more agents than ever are under preclinical investigation or in clinical trials. Several classes of therapeutic agents, such as immunomodulatory (IMiD) drugs, monoclonal antibodies (MAb), proteasome inhibitors, antiiflammatories, angiogenesis inhibitors, and protein kinase inhibitors, among others, are all showing promise in treating symptoms or slowing progress of multiple myeloma.

While some agents that were previously in development may have disappeared from our list as they failed to show effectiveness, many more have taken their place. New drug companies have also emerged with antimyeloma treatments in their pipeline, and many established pharmaceutical companies and research organizations are increasingly turning their attention to multiple myeloma. We have tried to monitor their progress and provide you with updates.

The therapies described in this section are divided into various stages of clinical development. In each of the following sections you will find information about what these therapies are, how they work, and the status of clinical trials. This information will be constantly updated as new information becomes available.

The tables below provide a summary of the various agents currently in clinical trials or preclinical studies for myeloma and myeloma bone disease as of July 2006.

Be sure to visit the MMRF Clinical Trials Monitor frequently to check for new trial listings for the most promising agents.
Name Company Description
FDA–Approved Agents
Doxil®
(doxorubicin HCl liposome injection)
Ortho Biotech
Reformulated version of doxorubicin; approved in 2007 for use in combination with Velcade in patients who have not received Velcade and have received at least one prior therapy
Revlimid®
(lenalidomide)
Celgene Corporation
Immunomodulatory agent with multiple effects; approved in June 2006 for use in combination with dexamethasone in patients who have received at least one prior therapy
Thalomid®
(thalidomide)
Celgene Corporation
Immunomodulatory agent with multiple effects; approved in May 2006 for use in combination with dexamethasone as front-line therapy
Velcade®
(bortezomib for Injection)
Millennium Pharmaceuticals, Inc.
Proteasome inhibitor approved in 2005 for use in patients who have received at least one prior therapy
Agents in Phase III Study
Genasense
(Bcl-2 antisense,
G-3139, Augmerosen)
(lenalidomide)
Genta Incorporated
Antisense drug
MRA
Chugai Pharma USA
Humanized anti-IL-6 receptor MAb
Phase II
Actimid™
(CC-4047)
Celgene Corp-
oration
Type of IMiD™ (immunomodulatory drug) with multiple effects under study in Europe
Alkylade
(O-6-benzylguanine)
Keryx
Chemosensitizing agent that appears to enhance the efficacy of chemotherapy
Aplidin®
PharmaMar, SA
Marine-derived antitumor agent that induces rapid apoptosis
Atlizumab
(MRA, tocilizumab)
Chugai
Pharma
Humanized antibody against the IL-6 receptor. In Phase I studies in the US and Phase II in France.
AP23573
Ariad Pharmaceuticals
Agent that blocks a critical cell-signaling protein known as mTOR; shrinks tumor cells and inhibits angiogenesis
Avastin™
(beva-
cizumab)
Genentech
Humanized antibody against the VEGF receptor. In Phase I studies in the US and Phase II in France in myeloma.
Campath-1H
(alemtuzumab)
Berlex;
Genzyme
Monoclonal antibody (CD52) being tested in conjunction with allogeneic stem cell transplants to prevent GVHD
CCI-779
(depsipeptide)
Wyeth-
Ayerst
Analog of the antitumor agent rapamycin, for patients who have failed at least one prior therapy
CC11006
Celgene Corporation
Immunomodulatory drugs with multiple effects
LED
(PNU-108112; doxorubicin)
NeoPharm
Liposome encapsulated doxorubicin
Mylovenge
Kirin
Individualized vaccine therapy using M-protein, a patient specific antigen.
Panzem™
(2-methoxy-estradiol, 2ME2)
EntreMed, Inc.
Angiogenesis inhibitor with multiple effects and orally administered
PI-88
Progen
Angiogenesis and metastasis inhibitor
RAD001
Novartis
Inhibits mTOR pathway.
SU5416
(Semoxind; Semaxanib; SU-5416; TUS-16)
Pfizer
A small molecule drug targeting the VEGF-mediated flk-1 tyrosine kinase (TK) pathway; inhibits vascular endothelial growth factor receptor 2 (VEGFr2) activation and blocks angiogenesis.
Temodar®
(temo-
zolomide)
Schering
Corp-
oration
Oral chemotherapy agent
Treanda™,
(bendamustine
hydrochloride - SDX-105)
Salmedix
In clinical use in Germany for multiple myeloma and other cancers; currently undergoing trials in the US for indolent NHL
Trisenox®
(arsenic
trioxide,
ATO)
Cephalon
Anticancer drug with multiple actions
Vatalanib
PTK-787/ZK222584
Novartis
Vascular endothelial growth factor receptor (VEGFR) tyrosine kinase inhibitor that inhibits cell signaling pathways involved in angiogenesis
Zactima (ZD6474)
Astra-Zeneca
Angiogenesis inhibitor that acts by blocking receptors for VEGF
Zarnestra™
(R115777, tipifarnib,FTI)
Johnson and Johnson Pharmaceutical Research and Development
Farnesyl transferase inhibitor with evidence of target modulation in phase I.
Phase I/II
AMG 162
Amgen
Antibody directed against RANK ligand (RANKL); inhibits bone destruction; given as injection.
Atiprimod
Calisto
Pharma-
ceuticals
Antiinflammatory and antiangiogenic agent that inhibits IL-6 and bone erosion for refractory myeloma in patients who have failed 2 or more therapies.
Breva-
Rex®
AltaRex
Monoclonal antibody directed against the MUC1 protein
CERA
(Contin-
uous
Erythro-
poiesis
Receptor
Activator)
Roche
Novel agent that stimulates red blood cell production for treatment of anemia
Gallium maltolate
Titan Pharmaceutical
Oral form of gallium that displays anti-cancer activity and strengthens bone
GCS-100
GlycoGenesys, Inc
Carbohydrate-based agent derived from pectin with activity in multiple cancers, and preclinical activity in myeloma
GCS-100LE
GlycoGenesys, Inc
Carbohydrate-based agent derived from pectin with activity in multiple cancers, and preclinical activity in myeloma
GVAX®
Myeloma
Vaccine
Cell
Genesys
Irradiated patient myeloma cell vaccine administered with cells that secrete a cytokine that stimulates immune responses in newly diagnosed patients undergoing transplant
GX15-070
GeminX
Designed to induce apoptosis (natural cell death) by inhibiting the Bcl-2 family of proteins, one of the most validated and well-studied cancer drug targets.
HGS-ETR1
(mapatumumab)
Human Genome Sciences
Monoclonal antibody directed against a specific TRAIL receptor; promotes apoptosis.
PX-12
ProlX
Novel chemotherapeutic agent (thioredoxin inhibitor)
Quadramet®
(EDTMP; Samarium-153 ethylene diamine tetramethylene phosphonate/Samarium)
Cytogen
Targeted radionuclide being investigated in combination with melphalan as a conditioning agent for transplant and in combination with Velcade in patients with relapsed or refractory myeloma.
Sodium Stibogluconate
VioQuest
Humanized monoclonal antibody that targets the CD40 antigen.
SU6668
(SU-6668; SU006668; TSU-68)
Pfizer
A synthesized inhibitor of receptor tyrosine kinases (RTK) present in receptors for various growth factors involved in tumor angiogenesis, including vascular endothelial growth factor (VEGF), fibroblast growth factor (FGF), and platelet derived growth factor (PDGF); inhibits angiogenesis.
TACI-IG
Serono
A soluble fusion protein that links the extravcellular portion of the transmembrane activator and CAML-interactor (TACI) receptor to the Fc portion of the human immunoglobulin (Ig).
Phase I
1D09C3
GPC Biotech,
AG
Monoclonal antibody that causes apoptosis (programmed cell death) of certain types of cancer cells
17-AAG
(KOS-953;
geldana-mycin)
Kosan
Biosciences
Inc.
Inhibitor of a heat shock protein (Hsp90), which promotes myeloma cell growth and survival
Allomune System
BioTransplant
Enhances BMT effectiveness.
Alvocidib
(Flavopiridol; NSC 649890; L86-8275; HMR-1275; HMR 1275)
NCI; Sanofi Aventis
Semisynthetic analog of rohitukine isolated from the bark of the Indian Dysoxylum binectariferum tree; a potent CDK1 inhibitor that arrests cell cycle progression in either G1 or G2.
Apo2L-TRAIL
(PRO 1762; PRO1762; TRAIL/Apo2L; Apo2L/TRAIL; AMG 951)
Genentech
Soluble form of TRAIL (tumor necrosis factor [TNF]–related apoptosis-inducing ligand), a marker found on the surface of various immune cells that plays a role in tumor cell killing; triggers apoptosis of drug-resistant myeloma cell lines and patient cells.
Atlizumab
(MRA,
tocilizumab)
Chugai
Pharma
Humanized antibody against the IL-6 receptor. In Phase I studies in the US and Phase II in France.
AVN944
(VX 944)
Avalon
2nd generation noncompetitive inosine monophosphate dehydrogenase (IMPDH) inhibitor.
B-B4-DMI
Immunogen
TAP (tumor activated prodrug) monoclonal antibody coupled to a cancer drug targeted against the CD138 protein found on myeloma cells.
BCX-1777
(furodosine)
BioCryst
Pharma-
ceuticals
Drug effective in killing myeloma cells in the lab
CHIR 258
Chiron
Oral agent that inhibits receptors in the fibroblast growth factor (FGF) pathway, as well as VEGF and platelet-derived growth factor (PDGF)
CP-571, 871
IGF-1R mAB
Pfizer
IGF-1 (monoclonal antibody to insulin-like growth factor-1 receptor) under investigation for relapsed/refractory multiple myeloma
EM-164
Sanofi-Aventis
Antibody that inhibits insulin-like growth factor (IGF-1), a factor that mediates growth and survival of myeloma cells
ENMD-0995
EntreMed,
Inc./
Celgene
Derivative of Thalidomide analog (S-3APG)
huN901-DM1
Immunogen
Monoclonal antibody bound to an anticancer drug directed against the CD56 marker found on myeloma cells coupled with a cancer drug.
IPI-504
Infinity
Targeted cancer therapy that preferentially induces the death of cancer cells through inhibition of the Hsp-90 complex.
KOS-1022
(alvespimycin HCl; 17-DMAG; NSC707545)
Kosan Biosciences Inc.
Second generation Heat Shock Protein (HSP) 90 inhibitor
KOS-953
(tanespimycin; 17-AAG; geldana-mycin)
Kosan
Biosciences Inc.
Inhibitor of a heat shock protein (HSP90) that promotes myeloma cell growth and survival and growth
LymphoRad™131
(B Lympho-
cyte
Stimulator,
BLyS™)
Human
Genome
Sciences
Radiolabeled agent that targets myeloma cells for poor risk patients
KRX-0401
(Perifosine; D-21266)
Keryx
In pre-clinical models and early clinical trials, Perifosine displayed impressive anti-tumor activity, as well as anti-Akt activity.
MS-275
Berlex
Labs
Histone deacetylase inhibitor that inhibits tumor cell growth
MV-NIS
Mayo Clinic
Oncolytic measles virus belonging to the Edmonstron vaccine lineage.
NPI-0052
Nereus Pharmaceuticals
Novel marine derived proteasome inhibitor active against multiple myeloma cells which are resistant to bortezomib.
Pyroxamide
Merck
A small molecule inhibitor of histone deacetylase (HDAC).
SCIO-469
Scios, Inc.
Protein p38 MAP kinase-inhibitor which appears to target pathways involved in resistance to bortezomib
SGN40
Seattle
Genetics
Monoclonal antibody directed against CD40
Vorinostat (SAHA-suberoylanilide hydroxamic acid)
Merck
Histone deacetylase (HDAC) inhibitor with marked activity preclinically in multiple myeloma
Xcytrin
(motexafin
gadolinium)
Pharma-
cyclics
Novel drug that induces apoptosis of myeloma cells in the lab; undergoing trials for relapsed/refractory multiple myeloma
Preclinical Agents Under Study in the Laboratory
Amplimexon
(Imexon)
AmpliMed
Corp
Cancer drug with immune stimulating and cytotoxic activity with a unique mechanism of action
Anti-CD38 MAb
Crucell
Human monoclonal antibody.
Apomine™
(SR-45023A)
Ilex
Oncology
HMG-CoA inhibitor
BIBF-1120
(indolinone)
Boehringer
Ingleheim
Pharma
Novel chemotherapy drug (VEGF-R2 (kinase) inhibitor)
CC007
Celgene
Celgene
CC11006
Celgene
Imid drug with similar mechanism to thalidomide
CHIR-12.2
(CD40monoclonal antibody)
Chiron
Antibody that targets the CD40 protein
cKap
Immune System Therapeutics Ltd.
Chimeric version of the murine antibody, mKap, that induces apoptosis in all myeloma cell lines shown to express the surface antigen KMA. cKap is highly effective in inducing antigen dependent cellular cytotoxicity. Preclinical trials expected by late 2005.
Curcumin
MD Anderson
Component of the spice turmeric, also found in yellow mustard, that induces apoptosis of myeloma cells
Danton
Dendreon
Monoclonal antibody that targets HLA-DR.
Defibrotide
Gentium
SpA
(Italy)
Novel orally bioavailable oligonucleotide with antimyeloma activity and anticoagulant effects. Entering Phase I clinical trials in Italy
DHMEQ
 
Inhibitor of NF–κΒ induces death of myeloma cells
Dimethylcelecoxib
(DMC)
University of Southern California
Halts tumor growth in drug-resistant lines of multiple myeloma cells.
DOM1112
Domantis
Dual targeting domain antibody that selectively kills multiple myeloma cells via CD138.
GRN163
Geron
Corp.
Telomerase inhibitors that have been shown in vitro to induce apoptosis and inhibit myeloma cell growth
GW654652
GlaxoSmithKline
Small molecule tyrosine-kinase inhibitor which inhibits all 3 VEGF receptors with similar potency
hLL1
Immuno-
medics
Humanized monoclonal antibody directed against the CD74 protein found on B cells and myeloma cells
Highly purified
hematopoeitic stem
cells (HP-HSCs)
Cellerant
Technologies
Cells capable of rescuing patients from high dose chemotherapy
HuMax-CD38
Genmab
In preclinical studies, HuMax-CD38 was effective in killing primary multiple myeloma tumor cells and a range of tumor cell lines by triggering two immune system killing mechanisms: Antibody-Dependent Cellular Cytotoxicity (ADCC) and Complement Dependent Cytotoxicity (CDC).
ISIS 345794
Isis
Antisense drug that targets Signal Transducer and Activator of Transcription 3 (STAT-3), a protein that regulates cell growth and division
Immu-110
Immuno-
medics
Consists of a humanized monoclonal antibody directed against the CD74 protein found on B cells and myeloma cells (hLL1) coupled to doxorubicin
LBH589
Novartis
Histone deacetylase (HDAC) inhibitor; induces apoptosis of cancer cells
LPAAT
(lysopho-
sphatidic
acid
acyltrans
rerase)
-β inhibitors
Cell Therapeutics Inc.
These agents directly induce apoptosis of myeloma
LY2181308
Isis/Lilly
Antisense drug with demonstrated activity in multiple in vivo models of cancer.
MOR202
MorphoSys
AG
Fully-human antibody directed against CD38
NPI-0052
Nereus
Pharmaceuticals
Novel marine derived proteasome inhibitor active against multiple myeloma cells which are resistant to bortezomib
OGX-427
OncoGenex
A targeted therapeutic that inhibits expression of heat shock protein 27 (Hsp27).
PD173074
Pfizer
Inhibitor of fibroblast growth factor receptor–3 (FGFR3)
PXD101
CuraGen and TopoTarget A/S
Small molecule drug that selectively inhibits histone deacetylase
RANK-Fc
 
Recombinant human immunoglobulin fusion protein that inhibits RANKL and so inhibits bone destruction
SCIO-469
Scios
A small-molecule p38 mitogen-activated protein (MAP) kinase inhibitor under development as a potential oral therapy for inflammatory disorders and as a potential treatment for multiple myeloma.
SD-208
Scios
Inhibitor of transforming growth factor (TGF) beta-1, a resistance factor in myeloma
Seleciclib
Cyclacel
A small molecule Cyclin Dependent Kinase (CDK) inhibitor that causes cancer cell death by inducing apoptosis in tumor cells, currently in clinical trials to show activity against b-cell hematologic malignancies.
SF1126
Semafore
Pharma-
ceuticals,
Inc
PI3K inhibitor with effects in critical cell signaling pathways demonstrated in in vivo studies
SGN-70
Seattle Genetics
A humanized MAb that targets the CD70 antigen.
SDX-101
Salmedix
Oral COX-2 inhibitor that is toxic to myeloma cells and blocks production of myeloma growth factors in bone marrow; also under investigation in CLL
TSP-1
(Thrombospondin-1)
Protein
Sciences
Corp.
Angiogenesis inhibitor with anti-myeloma activity

Reviewed by:

Constantine S. Mitsiades, M.D., Ph.D.
Instructor in Medicine
Dept. of Medical Oncology, Dana-Farber Cancer Institute,
Dept. of Medicine, Harvard Medical School