BACKGROUND	6 Months Ended
Jun. 30, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
BACKGROUND	NOTE 1 – BACKGROUND Rebus Holdings, Inc. (“we”, “us”, “our company”, “our”, “Rebus,” “Rebus Holdings,” or the “Company”) was formed under the laws of the State of Delaware in November 2003, and has its principal office in Westlake Village, California. We are focused on the research and development of novel targeted precision therapeutics for the treatment of cancer. Our approach utilizes our proprietary delivery technology to better enhance immuno-modulation for improved therapeutic outcomes. Our potential first-in-class immune-oncology lead asset, RT-AR001, an adenosine receptor A2B antagonist, is differentiated by its novel microparticle formulation that allows for better tumor infiltration and enhanced outcomes when administered intra-tumorally. Our patented portfolio of adenosine receptor antagonists provides flexibility to optimize treatment based on the specific targets found in each type of cancer. The adenosine receptor modulators include A 2B antagonists, dual A 2A /A 2B antagonists, and A 2A antagonists that have broad development applicability including indications within immuno-oncology and inflammation. Adenosine is implicated in immunosuppression in the tumor microenvironment. Adenosine receptor antagonists may boost the host immune response against the tumor as a single-agent and in combination with other existing immuno-oncology agents leading to enhanced tumor killing and inhibition of metastasis. Adenosine also has anti-inflammatory properties in the acute and chronic setting. Adenosine receptor antagonists may promote a decreased inflammatory response and can potentially treat a broad range of inflammatory and autoimmune based diseases and conditions (e.g., rheumatoid arthritis, joint injury, Crohn’s disease, psoriasis) as well as improve wound healing and decrease pain. In October 2020, pursuant to the cancellation of a license agreement whereby we previously licensed US Patent 9,593,118, we reacquired the exclusive right to such patent that covers both A2B and dual A2A/A2B antagonists. Accordingly, going forward our major focus will be to: (i) further characterization of the anti-cancer activity of our unique pipeline delivery platform containing A2B and dual A2A/A2B antagonists, leading to selection of a clinical candidate or candidates for an Investigative New Drug or IND enabling studies; and (ii) licensing and/or partnering our delivery platform and the A2B and dual A2A/A2B antagonists for further development. Our ability to execute the business plan is contingent upon our ability to raise the necessary funds. We are currently using such funds to maintain our SEC reporting requirements, pay legal accounting and other professional fees, and to retain consultants and other personnel to develop the adenosine A2R antagonists and in preparation for an IND filing related to our unique delivery platform and portfolio of adenosine A2R antagonists for the treatment of certain solid tumors. Should we fail to further raise sufficient funds to execute our business plan, our priority would be to maintain our intellectual property portfolio and seek business development opportunities with potential development partners and/or acquirors.

BACKGROUND

6 Months Ended

Jun. 30, 2023

Organization, Consolidation and Presentation of Financial Statements [Abstract]

NOTE 1 – BACKGROUND

Rebus Holdings, Inc. (“we”, “us”, “our company”, “our”, “Rebus,” “Rebus Holdings,” or the “Company”) was formed under the laws of the State of Delaware in November 2003, and has its principal office in Westlake Village, California. We are focused on the research and development of novel targeted precision therapeutics for the treatment of cancer.

Our approach utilizes our proprietary delivery technology to better enhance immuno-modulation for improved therapeutic outcomes. Our potential first-in-class immune-oncology lead asset, RT-AR001, an adenosine receptor A2B antagonist, is differentiated by its novel microparticle formulation that allows for better tumor infiltration and enhanced outcomes when administered intra-tumorally. Our patented portfolio of adenosine receptor antagonists provides flexibility to optimize treatment based on the specific targets found in each type of cancer.

The adenosine receptor modulators include A 2B antagonists, dual A 2A /A 2B antagonists, and A 2A antagonists that have broad development applicability including indications within immuno-oncology and inflammation. Adenosine is implicated in immunosuppression in the tumor microenvironment. Adenosine receptor antagonists may boost the host immune response against the tumor as a single-agent and in combination with other existing immuno-oncology agents leading to enhanced tumor killing and inhibition of metastasis. Adenosine also has anti-inflammatory properties in the acute and chronic setting. Adenosine receptor antagonists may promote a decreased inflammatory response and can potentially treat a broad range of inflammatory and autoimmune based diseases and conditions (e.g., rheumatoid arthritis, joint injury, Crohn’s disease, psoriasis) as well as improve wound healing and decrease pain.

In October 2020, pursuant to the cancellation of a license agreement whereby we previously licensed US Patent 9,593,118, we reacquired the exclusive right to such patent that covers both A2B and dual A2A/A2B antagonists. Accordingly, going forward our major focus will be to: (i) further characterization of the anti-cancer activity of our unique pipeline delivery platform containing A2B and dual A2A/A2B antagonists, leading to selection of a clinical candidate or candidates for an Investigative New Drug or IND enabling studies; and (ii) licensing and/or partnering our delivery platform and the A2B and dual A2A/A2B antagonists for further development.

Our ability to execute the business plan is contingent upon our ability to raise the necessary funds. We are currently using such funds to maintain our SEC reporting requirements, pay legal accounting and other professional fees, and to retain consultants and other personnel to develop the adenosine A2R antagonists and in preparation for an IND filing related to our unique delivery platform and portfolio of adenosine A2R antagonists for the treatment of certain solid tumors. Should we fail to further raise sufficient funds to execute our business plan, our priority would be to maintain our intellectual property portfolio and seek business development opportunities with potential development partners and/or acquirors.