Dose-Escalation of MNPR-101-PCTA-177Lu in Solid Tumors

Open Label, Phase 1a, Dose-Escalation Study Evaluating the Safety of Fractionated MNPR-101-PCTA-177Lu Dosing in the Treatment of Solid Tumor Cancers

Dose-Escalation of MNPR-101-PCTA-177Lu in Solid Tumors (NCT06617169) is a Phase 1 interventional studying Solid Tumor, Adult and Bladder Cancer, sponsored by Monopar Therapeutics. RECRUITING as of the most recent ClinicalTrials.gov update. Talk to your doctor before contacting the trial site.

About This Trial

This is an open-label, uncontrolled, multi-center, phase 1a MNPR-101-PCTA-177Lu dose-escalation study in patients with solid tumor cancers. Patients must have participated in the imaging study MNPR-101-D001 (actively recruiting, diagnostic study of MNPR-101-DFO\*-89Zr). * TITE-BOIN will be used to objectively determine dose increase, no dose change, or dose decrease for each group of two patients. * The treatment period consists of two 12-week cycles. Patients will receive three equal fractions of MNPR-101-PCTA-177Lu with radioactivity ranging from 480-2240 MBq on each of Cycle 1 Day 1, Cycle 1 Day 15, and Cycle 2 Day 1 (12 weeks after Cycle 1 Day 1). * Patients will be followed for 12 weeks after their last dose of MNPR-101-PCTA-177Lu. * Patients will be imaged at specific timepoints during the study.

What Stage of Research Is This?

Phase 1 trials test a new treatment for the first time in humans, focusing on safety, dosing, and how the body processes the drug. For Solid Tumor, Adult, a Phase 1 study typically enrolls a small number of participants — often healthy volunteers or patients who have exhausted standard treatment options. Phase 1 results determine whether a treatment moves into larger Phase 2 efficacy studies.

This trial is currently recruiting participants. The sponsor has registered the study with ClinicalTrials.gov as actively enrolling, which means new applicants who meet the eligibility criteria can be considered for screening. Trial status can change between updates — confirm current recruiting status with the study contact before traveling for a screening visit.

With a target enrollment of 12 participants, this is a small study — typical of early-phase research, rare-disease trials, or pilot studies designed to generate preliminary signal before a larger study is launched.

Who May Be Eligible (Plain English)

Who May Qualify: 1. Participated in the MNPR-101-D001 study. 2. Females of childbearing potential must have a negative serum pregnancy test at time of screening and a negative urine pregnancy test on Day 1 prior to study drug administration if screening is \>7 days prior to Day 1. A rapid serum pregnancy test result performed as standard of care will be accepted if available. 3. Both males and females must agree to use highly effective contraceptive precautions if conception is possible during the dosing period and up to 3 months after dosing. 4. Female patients who are lactating must agree to discontinue breastfeeding prior to the dose of study drug and must refrain from breastfeeding for 3 months following the last dose of study drug. Who Should NOT Join This Trial: 1. Chemotherapy, radiotherapy (other than short cycle of palliative radiotherapy), or immunotherapy within 14 days prior to administration of MNPR-101-PCTA-177Lu. 2. Continuing ≥ Grade 3 adverse reactions from previous cancer treatment that works throughout the body (like chemotherapy) (Common Terminology Criteria for Adverse Events \[CTCAE\] version 5.0). 3. Prior treatment with any radiopharmaceutical or investigational agents within 4 weeks or 5 half-lives, whichever is longer, prior to administration of the first dose of MNPR-101-PCTA-177Lu other than MNPR-101-DFO\*-89Zr. 4. Have evidence of impaired organ function at Screening and prior to dosing, particularly: • Bone marrow: i. Platelets ≤150×10\^9/L. ii. Absolute neutrophil count ≤1.5×10\^9/L. iii. Hemoglobin \<9g/dL (no red blood cell transfusion in the previous 4 weeks). • Liver function: i. AST/ALT \>3xULN (institutional upper limits of normal) OR \>5×ULN for patients with liver metastases. ii. Bilirubin \>1.5xULN OR \>3xULN for patients with known Gilbert's Syndrome. ...See full criteria on ClinicalTrials.gov Always talk to your doctor about whether this trial is right for you.

These are translations of the protocol\'s inclusion and exclusion criteria, simplified for patients and caregivers. The original clinical text appears below. Eligibility is ultimately confirmed by the trial site\'s screening process — this summary is a starting point for a conversation with your doctor, not a final determination.

Original Eligibility Criteria

View original clinical language

Inclusion Criteria: 1. Participated in the MNPR-101-D001 study. 2. Females of childbearing potential must have a negative serum pregnancy test at time of screening and a negative urine pregnancy test on Day 1 prior to study drug administration if screening is \>7 days prior to Day 1. A rapid serum pregnancy test result performed as standard of care will be accepted if available. 3. Both males and females must agree to use highly effective contraceptive precautions if conception is possible during the dosing period and up to 3 months after dosing. 4. Female patients who are lactating must agree to discontinue breastfeeding prior to the dose of study drug and must refrain from breastfeeding for 3 months following the last dose of study drug. Exclusion Criteria: 1. Chemotherapy, radiotherapy (other than short cycle of palliative radiotherapy), or immunotherapy within 14 days prior to administration of MNPR-101-PCTA-177Lu. 2. Continuing ≥ Grade 3 adverse reactions from prior systemic therapy (Common Terminology Criteria for Adverse Events \[CTCAE\] version 5.0). 3. Prior treatment with any radiopharmaceutical or investigational agents within 4 weeks or 5 half-lives, whichever is longer, prior to administration of the first dose of MNPR-101-PCTA-177Lu other than MNPR-101-DFO\*-89Zr. 4. Have evidence of impaired organ function at Screening and prior to dosing, particularly: • Bone marrow: i. Platelets ≤150×10\^9/L. ii. Absolute neutrophil count ≤1.5×10\^9/L. iii. Hemoglobin \<9g/dL (no red blood cell transfusion in the previous 4 weeks). • Liver function: i. AST/ALT \>3xULN (institutional upper limits of normal) OR \>5×ULN for patients with liver metastases. ii. Bilirubin \>1.5xULN OR \>3xULN for patients with known Gilbert's Syndrome. • Renal function: i. eGFR ≤45 mL/min determined using BSA-adjusted Chronic Kidney Disease Epidemiology Collaboration CKD-EPI 2021 formula \[https://www.kidney.org/professionals/kdoqi/gfr\_calculator\]. 5. Safety event of significance in MNPR-101-D001 study: 1. a related CTCAE Grade 4 hematologic or hepatologic event 2. a related CTCAE Grade 3 hematologic or hepatologic event which lasted \>30 days 6. Unacceptable value for projected organ dose based upon dosimetry from the MNPR-101-D001 study that exceeds safe absorbed dose limits, as determined by Monopar. 7. Other serious, non-malignant diseases (e.g., renal, hepatic, or hematologic) that may interfere with objectives of the study, safety, or compliance, as judged by the investigator. 8. Cognitive impairment or contraindications that may compromise ability to give informed consent or comply with requirements of the study.

Treatments Being Tested

DRUG

MNPR-101-PCTA-177Lu

MNPR-101-PCTA-177Lu administered intravenously over approximately 20 minutes, followed by a normal saline flush. Dosing will occur on Cycle 1 Day 1, Cycle 1 Day 15, and Cycle 2 Day 1.

Locations (1)

Trial sites listed on ClinicalTrials.gov for this study. Site activation status can vary — confirm with the specific site before traveling for a screening visit.

Melbourne Theranostic Innovation Centre (MTIC)

North Melbourne, Victoria, Australia

How to Talk to Your Doctor About This Trial

Bring the printable summary of this trial — including the NCT ID (NCT06617169), the sponsor (Monopar Therapeutics), and the key eligibility criteria — to your next appointment. Your doctor can review the inclusion and exclusion criteria against your medical history, lab values, and current treatments to assess whether you are likely to qualify. They can also help you weigh whether trial participation makes sense alongside your existing care plan.

Useful questions to walk through together: What does the trial protocol require beyond standard care? How long is the active treatment phase, and how long is follow-up? Are there study visits at sites I can reach? Who pays for the trial-specific procedures, and who pays for standard-of-care portions? See our 25 questions to ask about clinical trials guide for a more complete checklist.

Authoritative Sources

The official record for this trial lives on ClinicalTrials.gov — the federal registry maintained by the National Library of Medicine at NIH. For background on how this trial fits into the FDA approval pathway, see the FDA drug approval process. For oncology-specific guidance for patients considering trials, the National Cancer Institute publishes patient-oriented overviews. International trial registries are aggregated by the WHO ICTRP.

Frequently Asked Questions

What is the NCT06617169 clinical trial studying?

This is an open-label, uncontrolled, multi-center, phase 1a MNPR-101-PCTA-177Lu dose-escalation study in patients with solid tumor cancers. Patients must have participated in the imaging study MNPR-101-D001 (actively recruiting, diagnostic study of MNPR-101-DFO\*-89Zr). * TITE-BOIN will be used to objectively determine dose increase, no dose change, or dose decrease for each group of two patients. * The treatment period consists of two 12-week cycles. Patients will receive three equal fractions of MNPR-101-PCTA-177Lu with radioactivity ranging from 480-2240 MBq on each of Cycle 1 Day 1, Cycle… The full protocol is registered on ClinicalTrials.gov and includes the primary outcome measures, eligibility criteria, and study endpoints.

Who can participate in NCT06617169?

Eligibility for this trial depends on the specific inclusion and exclusion criteria set by the sponsor. The plain-English summary above translates the most important criteria into accessible language; the official clinical text is preserved in the collapsible section underneath. Whether you fit any specific trial is a medical decision your doctor needs to confirm — bring the trial information to your treating physician for a full review against your medical history.

How do I contact the trial site for NCT06617169?

Contact information registered with ClinicalTrials.gov is shown in the sidebar of this page. Before reaching out, confirm with your treating physician that this trial is appropriate for your situation. The trial site will then walk you through the screening process to determine final eligibility.

Is participating in a clinical trial safe?

Clinical trials in the United States are regulated by the FDA and overseen by Institutional Review Boards (IRBs) that review the protocol for safety. Risk varies by trial — Phase 1 studies test new treatments in humans for the first time, while Phase 3 trials use treatments that have already passed earlier safety screening. The informed consent document for any specific trial details the known risks and what to expect. Discuss those risks with your physician before deciding whether to participate.

Where can I verify the data on this page?

Every detail on this page comes directly from the ClinicalTrials.gov API. Click "View on ClinicalTrials.gov" in the sidebar to see the official, unmodified record. The federal record is always authoritative; this page is a structured presentation with a plain-English eligibility translation. For background on how clinical trials are regulated, see the FDA drug approval process documentation.

How This Page Is Built

Every field on this page is pulled directly from the ClinicalTrials.gov API v2 — no estimates, no proxies. The plain-English eligibility translation is generated from the original protocol text and reviewed for fidelity to the underlying clinical criteria. The original clinical text remains visible in the collapsible section above so users and clinicians can verify the translation. Read the full methodology for the data pipeline and known limitations.

Source: ClinicalTrials.gov API v2 record for NCT06617169. Maintained by the National Library of Medicine at NIH. Public domain. Cite as: "TrialFinderData. NCT06617169. Data: ClinicalTrials.gov."

Medical disclaimer: This page is informational, not medical advice. Talk to your doctor about whether a clinical trial is right for you.

Last updated 2026-05-08 · Data from ClinicalTrials.gov.