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Monopar Initiates Radiopharma Phase 1 Clinical Trial for MNPR-101-Zr in Advanced Cancer Patients

Monopar Therapeutics Inc.
Monopar Therapeutics Inc.

WILMETTE, Ill., April 10, 2024 (GLOBE NEWSWIRE) -- Monopar Therapeutics Inc. (Nasdaq: MNPR), a clinical-stage biopharmaceutical company focused on developing innovative treatments for cancer patients, today announced that its Phase 1 dosimetry clinical trial for its novel radiopharmaceutical imaging agent MNPR-101-Zr (MNPR-101 conjugated to zirconium-89) is now active and recruiting patients with advanced cancers. The antibody MNPR-101 targets the urokinase plasminogen activator receptor (uPAR), which is expressed on numerous tumor types including pancreatic, breast, colorectal, and bladder.

The study is now open for enrollment at the Melbourne Theranostic Innovation Centre (MTIC) in Australia, and is being led by Professor Rodney Hicks, an internationally recognized physician and pioneer in the radiopharma space. MTIC will use one of the world's most sensitive, state-of-the-art, clinical total-body PET/CT (positron emission tomography–computed tomography) scanners, the Siemens Biograph Vision Quadra, to image the tumor targeting ability of MNPR-101-Zr in advanced cancer patients.

The Phase 1 dosimetry trial is evaluating the safety and dosimetry of MNPR-101-Zr in up to 12 patients with advanced cancer. Preclinical data to date have shown highly specific and durable tumor uptake of MNPR-101-Zr in human cancer xenograft models. Moreover, Monopar recently shared positive preclinical efficacy data showing potent and durable anti-tumor activity of MNPR-101 bound to therapeutic radioisotopes. If the tumor uptake, biodistribution, and safety look encouraging in this Phase 1 clinical trial for MNPR-101-Zr, the Company plans to expand the study or initiate a new study to test the potential efficacy of MNPR-101 bound to a therapeutic radioisotope such as Ac-225 in patients with advanced cancers.

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“The Monopar team is quite excited about this trial initiation,” said Chandler Robinson, MD, Monopar’s Chief Executive Officer. “The preclinical results to date in hard-to-treat cancers such as pancreatic and triple negative breast have impressed us, with our radiopharma program demonstrating a promising ability to selectively target and destroy uPAR expressing tumors. We are very much looking forward to seeing the biodistribution and dosimetry data from this first-in-human study in advanced cancer patients.”

Further information about the MNPR-101-Zr trial is available at www.ClinicalTrials.gov under study identifier NCT06337084.

About Monopar Therapeutics Inc. 

Monopar Therapeutics is a clinical-stage biopharmaceutical company focused on developing innovative treatments for cancer patients. Monopar's pipeline consists of Phase 1-stage MNPR-101 for radiopharmaceutical use in various advanced cancers; Phase 1b-stage camsirubicin for the treatment of advanced soft tissue sarcoma; and an early-stage camsirubicin analog, MNPR-202. For more information, visit: www.monopartx.com and ir.monopartx.com/presentations.

Forward-Looking Statements
Statements contained in this press release regarding matters that are not historical facts are "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. The words “may,” “will,” “could,” “would,” “should,” “expect,” “plan,” “anticipate,” “intend,” “believe,” “estimate,” “predict,” “project,” “potential,” “continue,” “target” and similar expressions are intended to identify forward-looking statements, although not all forward-looking statements contain these identifying words. Examples of these forward-looking statements include: that the MTIC will use one of the world's most sensitive, state-of-the-art, clinical total-body PET/CT (positron emission tomography–computed tomography) scanners, the Siemens Biograph Vision Quadra, to image the tumor targeting ability of MNPR-101-Zr in advanced cancer patients; that if the tumor uptake, biodistribution, and safety look encouraging in this Phase 1, the Company plans to test the efficacy of MNPR-101 bound to a therapeutic radioisotope such as Ac-225 in patients with advanced cancers; and that Monopar is very much looking forward to seeing the biodistribution and dosimetry data from this first-in-human study in advanced cancer patients. The forward-looking statements involve risks and uncertainties including, but not limited to: that future preclinical or clinical data will not be as promising as the data to date; not enrolling the Phase 1 clinical trial; that MNPR-101-Zr, MNPR-101-Ac225 and/or other radiopharmaceuticals we may develop may cause unexpected serious adverse effects or fail to image or be effective against the cancer tumors in humans; the potential for the HREC to put the Phase 1 trial on clinical hold at any time; and the significant general risks and uncertainties surrounding the research, development, regulatory approval, and commercialization of imaging agents and therapeutics. Actual results may differ materially from those expressed or implied by such forward-looking statements. Risks are described more fully in Monopar's filings with the Securities and Exchange Commission. All forward-looking statements contained in this press release speak only as of the date on which they were made. Monopar undertakes no obligation to update such statements to reflect events that occur or circumstances that exist after the date on which they were made. Any forward-looking statements contained in this press release represent Monopar’s views only as of the date hereof and should not be relied upon as representing its views as of any subsequent date.

CONTACT:

Monopar Therapeutics Inc.
Investor Relations  
Kim R. Tsuchimoto  
Chief Financial Officer  
kimtsu@monopartx.com

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