Prostate CancerPhase 1NCT07636707
QLF4113 in Participants With Metastatic Prostate Cancer
A Phase 1 study testing QLF4113 for injection in people with Prostate Cancer, run by Qilu Pharmaceutical Co., Ltd..
Trial summary
This is an open-label, dose-escalation and expansion Phase I clinical trial designed to evaluate the safety, tolerability, pharmacokinetic (PK) profile, immunogenicity, and preliminary antitumor activity of QLF4113 monotherapy in participants with metastatic prostate cancer. Read more about this study
- Who is it for?
- Ages 18 years and older, men only
- Conditions the study is for
- Prostate Cancer
- What is being tested?
- QLF4113 for injection
- Type of treatment
- Injection or infusion
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 140 participants
- Where
- No sites listed yet
- Study dates
- 20 Jul 2026to 5 Dec 2028
- Phase
- Phase 1
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- Men only
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Participants voluntarily agree to participate and sign the informed consent form.
- Male, aged ≥18 years.
- Eastern Cooperative Oncology Group (ECOG) performance status score of 0-1.
- Life expectancy ≥ 3 months.
- Histologically or cytologically confirmed adenocarcinoma of the prostate without evidence of neuroendocrine carcinoma or small cell carcinoma features.
- Confirmed metastatic Castration-Resistant Prostate Cancer (mCRPC).
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- Failed or are intolerant to standard therapies
- Adequate function of major organs as defined by the protocol.
- Agreement to use effective contraception during the study (except for subjects who have undergone bilateral orchiectomy).
- Prior to the first use of the investigational drug, recovery from all reversible adverse events (AEs) related to prior anticancer treatments
Who cannot join
- Previously treated with drugs targeting CD3 or CD2.
- Significant Cardiovascular Diseases
- Active, Uncontrolled Infections
- Immunosuppressive Treatment before the first dose of the investigational drug
- Clinically Uncontrolled Third-Space Fluid Accumulation
- History of Other Malignancies within 5 years prior to the first dose of the investigational drug
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- Moderate to Severe Pulmonary Diseases significantly affecting lung function,
- Current Hepatic Encephalopathy, Hepatorenal Syndrome, or Cirrhosis classified as Child-Pugh B or worse.
- Allergy to the Investigational Drug or its Components.
- Any Condition deemed by the investigator to increase study-related risks, interfere with the interpretation of study results, or otherwise render the participant unsuitable for inclusion.
Trial locations and contacts
No sites are listed yet. Contact the study team or a site near you to ask about taking part.
About this study
Official title: An Open-label, Multicenter Phase I Clinical Trial to Evaluate the Safety, Tolerability, Pharmacokinetics, and Preliminary Antitumor Activity of QLF4113 for Injection in Participants With Metastatic Prostate Cancer.
This is an open-label, dose-escalation and expansion Phase I clinical trial designed to evaluate the safety, tolerability, pharmacokinetic (PK) profile, immunogenicity, and preliminary antitumor activity of QLF4113 monotherapy in participants with metastatic prostate cancer.
The Phase I trial consists of two parts: Phase Ia and Phase Ib. Phase Ia is a dose-escalation study of QLF4113 monotherapy to determine the recommended phase two dose and assess safety and PK. Then the study will proceed to Phase Ib, a dose-expansion study to further evaluate the preliminary efficacy and safety of QLF4113 monotherapy under the selected doses.
- Conditions
- Prostate Cancer
- Being tested
- QLF4113 for injection
- Medical subject headings
- Prostatic Neoplasms
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
QLF4113 for injectionDrug
A PSMA/CD3/CD2 antibody
| Study group | Role | What they receive |
|---|---|---|
| QLF4113 dose escalation arm | Experimental | Not described Receives: Drug: QLF4113 for injection |
What is being measured
The primary outcome is the main question the study is designed to answer.
Maximum tolerated dose (MTD) (Phase Ia)
Maximum tolerated dose is defined as the previous dose level at which 2 or more out of 2-6 participants experienced a dose-limited toxicity (DLT).
Measured: From first dose of study treatment until the end of Cycle 1 (21 days)
Maximum administered dose (MAD)(Phase Ia)
MAD is defined as follows: a) based on PK data, it is anticipated that at this dose level, the dose-exposure plateau has been reached, b) based on existing safety data, it is judged that dose escalation following this dose level will have a large safety risk or subject intolerance, or c) based on the PK-PD model, it suggested that the optimal target concentration of safety and efficacy has been explored.
Measured: From first dose of study treatment until the end of Cycle 1 (21 days)
recommended phase II dose (RP2D)
The RP2D will be comprehensively evaluated based on the safety, PK characteristics, and efficacy data from the Phase Ia study.
Measured: Through phase Ia completion, approximately 1 year.
The incidence and severity of adverse events (AE) (Phase Ib)
Incidence and severity of adverse events (AEs) evaluated according to the National Cancer Institute (NCI)-Common Terminology Criteria for Adverse Events (CTCA) Version 6.0 (v6.0) and American Society for Transplantation and Cellular Therapy (ASTCT)
Measured: Through phase Ia completion, approximately 1 year.
PSA50 response (Phase Ib)
Best response until progression, as defined by Response Evaluation Criteria in Solid Tumors （RECIST） version (v1.1) and Prostate Cancer Clinical Trials Working Group 3 (PCGW3).
Measured: From Screening to confirmed progressive disease (approximately 1 year)
Objective response rate (ORR) (phase Ib)
Measured: From Screening to confirmed progressive disease (approximately 1 year)
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted9 Jun 2026
- Study start20 Jul 2026 (estimated)
- Primary completion5 Jan 2028 (estimated)
- Study completion5 Dec 2028 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Prostate CancerStudies of the same condition, open and under way.
- More trials run by Qilu Pharmaceutical Co., Ltd.The sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 1
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 140 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Qilu Pharmaceutical Co., Ltd.
- Sponsor type
- Industry (pharma, biotech, devices)
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07636707
- Sponsor's protocol ID
- QLF4113-101
- Status last verified
- Jun 2026
- First submitted
- 4 Jun 2026
- Last updated
- 9 Jun 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 9 Jun 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- An Open-label, Multicenter Phase I Clinical Trial to Evaluate the Safety, Tolerability, Pharmacokinetics, and Preliminary Antitumor Activity of QLF4113 for Injection in Participants With Metastatic Prostate Cancer.
- ClinicalTrials.gov ID
- NCT07636707
- Acronym / sponsor ID
- QLF4113-101
- Conditions
- Prostate Cancer
- Phase
- Phase 1
- Study type
- Interventional
- Recruitment status
- Not yet recruiting
- Enrolment
- 140 participants (estimated)
- Lead sponsor
- Qilu Pharmaceutical Co., Ltd.Industry (pharma, biotech, devices)
- Study start
- 20 Jul 2026 (estimated)
- Primary completion
- 5 Jan 2028 (estimated)
- Study completion
- 5 Dec 2028 (estimated)
- First posted
- 9 Jun 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This is an open-label, dose-escalation and expansion Phase I clinical trial designed to evaluate the safety, tolerability, pharmacokinetic (PK) profile, immunogenicity, and preliminary antitumor activity of QLF4113 monotherapy in participants with metastatic prostate cancer.
The Phase I trial consists of two parts: Phase Ia and Phase Ib. Phase Ia is a dose-escalation study of QLF4113 monotherapy to determine the recommended phase two dose and assess safety and PK. Then the study will proceed to Phase Ib, a dose-expansion study to further evaluate the preliminary efficacy and safety of QLF4113 monotherapy under the selected doses.
Study design
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| QLF4113 dose escalation arm | Experimental | Drug: QLF4113 for injection |
Who may qualify
- Ages
- 18 years and older
- Sex
- Male only
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (10 listed)
- Participants voluntarily agree to participate and sign the informed consent form.
- Male, aged ≥18 years.
- Eastern Cooperative Oncology Group (ECOG) performance status score of 0-1.
- Life expectancy ≥ 3 months.
- Histologically or cytologically confirmed adenocarcinoma of the prostate without evidence of neuroendocrine carcinoma or small cell carcinoma features.
Key exclusion criteria (10 listed)
- Previously treated with drugs targeting CD3 or CD2.
- Significant Cardiovascular Diseases
- Active, Uncontrolled Infections
- Immunosuppressive Treatment before the first dose of the investigational drug
- Clinically Uncontrolled Third-Space Fluid Accumulation
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| QLF4113 for injectionA PSMA/CD3/CD2 antibody | Drug | QLF4113 dose escalation arm |
Primary outcome
Maximum tolerated dose (MTD) (Phase Ia)
Time frame: From first dose of study treatment until the end of Cycle 1 (21 days)
Maximum tolerated dose is defined as the previous dose level at which 2 or more out of 2-6 participants experienced a dose-limited toxicity (DLT).
Maximum administered dose (MAD)(Phase Ia)
Time frame: From first dose of study treatment until the end of Cycle 1 (21 days)
MAD is defined as follows: a) based on PK data, it is anticipated that at this dose level, the dose-exposure plateau has been reached, b) based on existing safety data, it is judged that dose escalation following this dose level will have a large safety risk or subject intolerance, or c) based on the PK-PD model, it suggested that the optimal target concentration of safety and efficacy has been explored.
recommended phase II dose (RP2D)
Time frame: Through phase Ia completion, approximately 1 year.
The RP2D will be comprehensively evaluated based on the safety, PK characteristics, and efficacy data from the Phase Ia study.
The incidence and severity of adverse events (AE) (Phase Ib)
Time frame: Through phase Ia completion, approximately 1 year.
Incidence and severity of adverse events (AEs) evaluated according to the National Cancer Institute (NCI)-Common Terminology Criteria for Adverse Events (CTCA) Version 6.0 (v6.0) and American Society for Transplantation and Cellular Therapy (ASTCT)
PSA50 response (Phase Ib)
Time frame: From Screening to confirmed progressive disease (approximately 1 year)
Best response until progression, as defined by Response Evaluation Criteria in Solid Tumors （RECIST） version (v1.1) and Prostate Cancer Clinical Trials Working Group 3 (PCGW3).
Objective response rate (ORR) (phase Ib)
Time frame: From Screening to confirmed progressive disease (approximately 1 year)
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 9 Jun 2026.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
Questions about this trial
What is this clinical trial studying?
A Phase 1 study testing QLF4113 for injection in people with Prostate Cancer, run by Qilu Pharmaceutical Co., Ltd..
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 10 inclusion and 10 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: opening soon, as of the sponsor's last update on 9 Jun 2026. Status can change between updates, so confirm with the study contact before making plans.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Jun Guo, Doctor (0086-10- 88121122, guoj307@126.com), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Maximum tolerated dose (MTD) (Phase Ia) (time frame: From first dose of study treatment until the end of Cycle 1 (21 days)). The study lists 6 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 9 Jun 2026.