OncoMed is advancing seven first-in-class anti-cancer stem cell product candidates in
clinical trials. All of these product
candidates were discovered at OncoMed using our in-depth knowledge of cancer biology and proprietary platform discovery technologies. Four of
our clinical-stage novel product candidates target the Notch cancer stem cell pathway and two product candidates target the key Wnt cancer stem
Our most recent product candidate to enter the clinic is targeting RSPO-LGR, a cancer stem cell pathway discovered by OncoMed scientists.
For each cancer stem cell pathway, there exist multiple potential therapeutic opportunities. We utilize biomarkers throughout our clinical development
efforts to enhance our understanding of how our drugs work and help identify the patients most likely to derive greater benefit from a given OncoMed
product candidate. Patients interested in finding out more about OncoMed clinical trials can use our
Clinical Trial Matching Service.
Demcizumab (anti-DLL4, OMP-21M18)
One of OncoMed's first anti-cancer stem cell product candidates in the clinic, demcizumab (anti-DLL4, OMP-21M18), is a monoclonal antibody that selectively
targets Delta-like ligand 4 (DLL4), an activator of the Notch signaling pathway. The Notch pathway is known to be important in cancer stem cells and cancer.
Blocking DLL4 has been shown in preclinical studies to result in anti-tumor activity via multiple mechanisms, including inhibiting cancer stem cell
growth and promoting cell differentiation, disrupting angiogenesis and potentially enhancing anti-tumor immune response.
In Phase 1a clinical studies, demcizumab has demonstrated initial single-agent activity, including early evidence of durable anti-tumor responses.
Results from Phase 1b studies of demcizumab plus standard-of-care chemotherapy in the first-line treatment of patients with advanced non-small cell lung
cancer (NSCLC) and pancreatic cancer demonstrate the safety of our truncated dosing approach, anti-tumor responses and promising signals of prolonged
survival benefit. These results are being confirmed in ongoing randomized Phase 2 trials of demcizumab. The DENALI trial will assess the efficacy of
demcizumab with carboplatin and pemetrexed in first-line non-squamous NSCLC. The YOSEMITE trial is evaluating demcizumab and gemcitabine plus Abraxane
in patients with first-line metastatic pancreatic cancers. A Phase 1b/2 trial of demcizumab and paclitaxel in patients with platinum-resistant ovarian
cancer is also ongoing. To learn more about OncoMed’s ongoing clinical studies of demcizumab, please see
Demcizumab is part of OncoMed’s
collaboration with Celgene Corporation.
The most recent public presentations of the demcizumab clinical studies include:
Tarextumab (anti-Notch2/3, OMP-59R5)
Tarextumab (anti-Notch2/3, OMP-59R5) is a novel anti-cancer stem cell antibody that prevents signaling through both the Notch2 and Notch3
receptors. Tarextumab has been shown in preclinical models to inhibit cancer stem cell growth, and promote cell differentiation, as well as
disrupt tumor angiogenesis by inhibiting vascular pericytes.
Tarextumab is currently being studied in the randomized Phase 2 PINNACLE trial, testing tarextumab in combination with physician’s choice
of etoposide and cisplatin or etoposide and carboplatin in first-line extensive stage small cell lung cancer patients. The Phase 1b portion of the
PINNACLE clinical trial demonstrated that tarextumab is well tolerated in combination with standard of care chemotherapies. In small cell lung
cancer, tarextumab has demonstrated dose-dependent and biomarker driven activity. A randomized Phase 2 clinical trial of tarextumab in
combination with gemcitabine and Abraxane has been discontinued. The Phase 2 clinical trial of tarextumab in SCLC is ongoing; additional
information is listed here: OMP59R5 ClinicalTrials.gov
Tarextumab is part of OncoMed’s collaboration with GlaxoSmithKline (GSK).
Public presentations of tarextumab data include:
Vantictumab (anti-Fzd7, OMP-18R5)
Vantictumab targets the Wnt cancer stem cell pathway and has demonstrated evidence of Wnt pathway modulation as well as early signals of
single-agent activity (i.e. prolonged stable disease).
OncoMed is conducting two Phase 1b clinical trials of vantictumab in combination with standard-of-care chemotherapy – a Phase 1b trial
in HER2-negative breast cancer (vantictumab + paclitaxel) and a Phase 1b trial in advanced pancreatic cancer (vantictumab + gemcitabine +
Abraxane). Information about OncoMed’s clinical studies of vantictumab is available here:
Vantictumab is part of OncoMed’s collaboration with Bayer Pharma AG.
Public presentations of the vantictumab clinical studies include:
Ipafricept (FZD8-Fc, OMP-54F28)
Ipafricept (FZD8-FC, OMP-54F28) selectively binds Wnt ligands that are activators of Wnt signaling. It is a fusion protein that consists of a portion of
the Frizzled 8 receptor from the Wnt pathway fused to the Fc domain of a human IgG1. Ipafricept has shown potent anti-cancer stem cell effects and induces
tumor cell differentiation in preclinical studies.
Two Phase 1b clinical trials of ipafricept are ongoing: one in pancreatic cancer (gemcitabine/nab-paclitaxel + ipafricept) and one in
ovarian cancer (carboplatin/paclitaxel + ipafricept). In a Phase 1a clinical trial, ipafricept was well tolerated as a single agent and
demonstrated evidence of Wnt pathway modulation and potential early single-agent activity manifested by prolonged stable disease. Links
to the ongoing ipafricept clinical trials on clinicatrials.gov can be accessed here:
Ipafricept is part of OncoMed’s collaboration with Bayer Pharma AG.
Public presentations of ipafricept data include:
Brontictuzumab (Anti-Notch1, OMP-52M51)
Bronticuzumab (anti-Notch1, OMP-52M51) is a novel anti-cancer stem cell antibody that binds the Notch1 receptor. Blocking Notch1 has been shown in preclinical
models to inhibit cancer stem cell growth, and promote cell differentiation, as well as to disrupt tumor angiogenesis. Brontictuzumab is being studied as a
single agent in two ongoing Phase 1a clinical trials among patients with advanced solid tumors or hematologic malignancies. Both trials incorporate strong
predictive biomarker hypotheses for the identification of patients more likely to respond to brontictuzumab. In early 2015 enrollment of patients whose
tumors demonstrate overexpression of the activated form of Notch1 began in the Phase 1a solid tumor trial. Patients' tumors are prescreened using OncoMed's
proprietary immunohistochemistry (IHC) test to determine eligibility. Links to the ongoing brontictuzumab clinical trials are listed here:
Brontictuzumab is part of OncoMed’s collaboration with GlaxoSmithKline (GSK).
Public presentations of data from brontictuzumab studies include:
Anti-DLL4/VEGF bispecific (OMP-305B83)
OncoMed’s anti-DLL4/VEGF bispecific targets both DLL4 on the Notch cancer stem cell pathway and the VEGF receptor. This antibody is intended to have both
anti-cancer stem cell and anti-angiogenic activity. The bispecific antibody was discovered using OncoMed’s proprietary MAbTrap™ antibody display technology,
which enables the rapid identification of monoclonal antibodies that bind targets with high affinity and specificity. The antibody is also the first program
based on OncoMed’s BiMAb™ bispecific platform technology, which enables bispecific antibodies with traditional antibody shape, to enter clinical testing.
OncoMed is currently enrolling patients with advanced refractory solid tumors in a Phase 1a clinical trial (see ClinicalTrials.gov listing here:
This program is part of OncoMed’s
collaboration with Celgene Corporation.
The RSPO-LGR pathway is believed to be an important cancer stem cell pathway. Human R-spondin (RSPO) proteins signal through the leucine-rich repeat-containing
G-coupled receptors (LGRs). Antibodies that disrupt binding of RSPO proteins to LGRs, or that disrupt RSPO activation of LGR signaling, are potential
anti-cancer agents. OncoMed has identified multiple antibodies targeting the RSPO-LGR pathway. OncoMed initiated a Phase 1a/1b clinical study for its first
antibody targeting the RSPO-LGR pathway, anti-RSPO3 (OMP-131R10). A proprietary biomarker to screen prospectively screen patients for expression of RSPO is
being developed in conjunction with this clinical program. Anti-RSPO3 has demonstrated activity in preclinical models against a variety of major tumor
types, including colon, lung and ovarian cancers. Information on OncoMed’s anti-RSPO3 clinical program is available here:
Anti-RSPO3 clinical program.
This program is part of OncoMed’s collaboration with Celgene Corporation.
Wnt Small Molecules
OncoMed and Bayer Pharma AG are jointly working to discover small molecules targeting the Wnt Pathway as part of the strategic
collaboration announced in June 2010.
Emerging Pipeline in Immunotherapy
OncoMed has multiple new discovery and preclinical efforts advancing internally. These programs are emerging from the company's focused
efforts in elucidating cancer stem cell and cancer biology, expertise in monoclonal antibody and protein therapeutics and expertise in
translational/predictive medicine. Among several novel discoveries in preclinical testing are robust T cell activating agents utilizing
fully human single-gene GITR trimeric ligand (GITRL) attached to an antibody framework.