Clinical Trials Search at Vanderbilt-Ingram Cancer Center

This is a Phase 1/2, open-label, non-randomized, 4-part Phase 1 trial to determine the safety
profile and identify the maximum tolerated dose (MTD) and/or recommended Phase 2 dose (RP2D)
of INBRX 106 administered as a single agent or in combination with the anti-PD-1 checkpoint
inhibitor (CPI) pembrolizumab (Keytruda).

RBS2418 (investigational product) is a specific immune modulator, working through
ectonucleotide pyrophosphatase/phosphodiesterase I (ENPP1), designed to lead to anti-tumor
immunity by increasing endogenous 2'-3'-cyclic guanosine monophosphate-adenosine
monophosphate (cGAMP) and adenosine triphosphate (ATP levels) and reducing adenosine
production in the tumors. RBS2418 has the potential to be an important therapeutic option for
subjects both as monotherapy and in combination with checkpoint blockade. This study is an
open-label, multi-site Phase 1a/1b study of RBS2418, a selective ENPP1 inhibitor, in
combination with pembrolizumab or as a monotherapy in subjects with advanced unresectable,
recurrent or metastatic tumors.

This phase II trial tests how well pB1-11 and human papillomavirus tumor antigen (TA-HPV) vaccines in combination with pembrolizumab work in treating patients with oropharyngeal cancer that has come back (recurrent) or that has spread from where it first started (primary site) to other places in the body (metastatic) and that is PD-L1 and human papillomavirus (HPV) positive. Oropharyngeal cancer is a type of head and neck cancer involving structures in the back of the throat (the oropharynx), such as the non-bony back roof of the mouth (soft palate), sides and back wall of the throat, tonsils, and back third of the tongue. Scientists have found that some strains or types of a virus called HPV can cause oropharyngeal cancer. pBI-11 is a circular deoxyribonucleic acid (DNA) (plasmid) vaccine that promotes antibody, cytotoxic T cell, and protective immune responses. TA-HPV is an investigational recombinant vaccina virus derived from a strain of the vaccina virus which was widely used for smallpox vaccination. Vaccination with this TA-HPV vaccine may stimulate the immune system to mount a cytotoxic T cell response against tumor cells positive for HPV, resulting in decreased tumor growth. Immunotherapy with monoclonal antibodies, such as pembrolizumab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread by inhibiting the PD-1 receptor. These investigational vaccines could cause or enhance an immune response in the body against HPV, during which time the activity of pembrolizumab against oropharyngeal cancer associated with HPV may be strengthened. These drugs in combination may be more effective in increasing the ability of the immune system to fight oropharyngeal cancer than pembrolizumab alone.

This phase II trial studies the effect of pembrolizumab alone compared to the usual approach (chemotherapy [cisplatin and carboplatin] plus radiation therapy) after surgery in treating patients with head and neck squamous cell carcinoma that has come back (recurrent) or patients with a second head and neck cancer that is not from metastasis (primary). Radiation therapy uses high energy radiation or protons to kill tumor cells and shrink tumors. Cisplatin is in a class of medications known as platinum-containing compounds. It works by killing, stopping or slowing the growth of cancer cells. Carboplatin is also in a class of medications known as platinum-containing compounds. It works in a way similar to the anticancer drug cisplatin, but may be better tolerated than cisplatin. Carboplatin works by killing, stopping or slowing the growth of cancer cells. Immunotherapy with monoclonal antibodies, such as pembrolizumab, may help the body's immune system attack the cancer and may interfere with the ability of tumor cells to grow and spread. Giving pembrolizumab alone after surgery may work better than the usual approach in shrinking recurrent or primary head and neck squamous cell carcinoma.