NCT05948865 · Conjupro Biotherapeutics, Inc.
A Phase 1 Study of CPO301 in Adult Patients With Advanced or Metastatic Solid Tumors
What this study is about
The goal of this clinical trial is to test CPO301, a type of drug called an antibody drug conjugate in adult patients with advanced or metastatic solid tumors.
View original scientific description
The goal of this clinical trial is to test CPO301, a type of drug called an antibody drug conjugate in adult patients with advanced or metastatic solid tumors.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Age ≥18 years
- Patients with histologically confirmed locally advanced or metastatic solid tumors who have disease progression, intolerance to prior therapy, are ineligible for available therapies, or refuse standard of care therapy in the metastatic setting.
- In Part A, patients with solid tumors including but not limited to NSCLC (adenocarcinoma and squamous cell carcinoma), breast cancer, KRAS-wild type colorectal cancer, and head \& neck cancer based on previous biopsy result.
- In Part B, Cohort 1 will exclusively include NSCLC patients with documented EGFR mutations based on previous biopsy result and Cohort 2 will be patients with other cancer(s) suggested to have sensitivity to CPO301 in Part A.
- At least 1 measurable target lesion present and documented by CT or MRI according to RECIST v1.1
- ECOG performance status 0 or 1 at screening
- Life expectancy \>12 weeks Major
Exclusion criteria
- Known, active, or uncontrolled central nervous system (CNS) metastasis or carcinomatous meningitis.
- Has AEs due to previous anti-tumor treatments not recovered to ≤Grade 1 (except for alopecia; some tolerable chronic toxicities of Grade 2 may be excluded after consultation with the sponsor, as judged by the investigator) according to NCI-CTCAE v5.0.
- Any serious and/or uncontrolled concurrent illness that may interfere with study participation Prior therapy
- Received other investigational drugs or treatments within 4 weeks before the first dose of the investigational drug in the study
- The time interval between the latest anti-tumor treatment and the first dose of the investigational drug meets the following requirements: Have received anti-tumor treatments such as chemotherapy, radiotherapy, targeted therapy, immunotherapy and other clinical investigational drugs within 4 weeks before the first dose of the investigational drug; have received oral fluoropyrimidines, small molecule targeted drugs within 2 weeks before the first dose of the investigational drug; have received palliative radiotherapy or local therapy within 2 weeks before the first dose of investigational drug.
- Had major surgery within 4 weeks before the first dose of the investigational drug in the study.
Where
- Los Angeles, California
- Newport Beach, California
- Santa Monica, California
- Denver, Colorado
- Celebration, Florida
- Sarasota, Florida
- Lebanon, New Hampshire
- Philadelphia, Pennsylvania
- Nashville, Tennessee
- Dallas, Texas
- Fairfax, Virginia
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Mar 20, 2026 · Source of record for eligibility and locations