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NCT Number: NCT06830850

A Trial of HRS-5041-103 to Evaluate the Safety, Tolerability, Pharmacokinetics and Efficacy of HRS-5041 in Subjects With Metastatic Castration-resistant Prostate Cancer

To evaluate the Safety, Tolerability, Pharmacokinetics and Efficacy of 5041-103 in Subjects with Metastatic Castration-resistant Prostate Cancer.

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Key information

Conditions

Metastatic Castration Resistant Prostate Cancer

Age range

18 year and older

Sex eligibility

Male

Study type

Interventional

Phase

Phase 1

Primary location

GenesisCare North Shore (Oncology), Sydney, New South Wales, Australia

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Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

IInclusion Criteria

  • Ability to understand the trial procedures and possible adverse events, voluntarily participate in the trial.
  • Adequate bone marrow and other vital organ functions
  • Adequate liver function tests
  • Metastatic Castration-resistant Prostate Cancer

Exclusion criteria

  • Plan to receive any other anti-tumor therapy during the study.
  • Receipt of any chemotherapy, targeted therapy, immunotherapy, live/attenuated vaccination, radiotherapy or surgery within 4 weeks prior to the first dosing of this study.
  • Uncontrolled hypertension (systolic blood pressure [SBP] > 150 mmHg and/or diastolic blood pressure [DBP] > 100 mmHg with regular anti-hypertension therapy).
  • Factors that may affect the oral administration of the IP (swallow difficulty, chronic diarrhea, and bowel obstruction, etc.), or active gastrointestinal (GI) disease or other disease which may affect the absorption, distribution, metabolism, or elimination of IP.
  • Known history of drug allergies, specific allergies (such as asthma, urticaria, eczema, etc.).
  • Active heart disease within 6 months prior to the first dosing of this study.
  • Medical history of other malignant tumor within 5 years prior to dosing.
  • Positive hepatitis B virus (HBsAg), hepatitis B core antibody (HBcAb), hepatitis C virus (HCV-Ab), or syphilis or severe infections which need treatment.

Treatment and study plan

HRS-5041 Single dose of HRS-5041 orally administered

Drug

HRS-5041 Oral dosage (Tablet) Oral dosage administration, 28 days per cycle.

Primary outcomes

  1. Incidence and severity of adverse events, ECOG PS score, vital signs (pulse rate, respiratory rate, blood pressure, body temperature), ECG, clinical chemistry, hematology, urinalysis and physical examination

    Time frame: Screening up to study completion, an average of 1 year.

    To evaluate the safety and tolerability profile of HRS-5041 in subjects with mCRPC.

Secondary outcomes

  1. Concentration

    Time frame: Screening up to study completion,an average of 1 year.

    Plasma concentrations of HRS-5041 during multiple dosing, directly observed from data

  2. Cmax,ss

    Time frame: From administration to C2, up to 4 months.

    Css, max are steady-state maximum concentrations of HRS-5041during multiple dosing, and are directly observed from data.

  3. Cmin,ss

    Time frame: From administration to C2, up to 4 months.

    Css, min are the steady-state trough concentrations of HRS-5041 during multiple dosing, and are directly observed from data

  4. Objective Response Rate (ORR)

    Time frame: Screening up to study completion, an average of 2 years.

    ORR refers to the proportion of subjects with a complete response (CR) or partial response (PR) based on all soft tissue assessments recorded from the date of first drug administration to either the date of radiographic disease progression (including bone progression and soft tissue progression), death from any cause, or the initiation of a new antitumor therapy, whichever occurs first. For subjects with CR or PR at the first evaluation, the efficacy should be confirmed 4 weeks later or at the next tumor imaging evaluation. The numerator includes subjects with a confirmed CR/PR at least 4 weeks after the initial assessment. The denominator consists of subjects with measurable target lesions at baseline.

  5. Best of Response (DoR)

    Time frame: Screening up to study completion, an average of 2 years.

    Best of Response (DoR) BOR refers to the best response of tumor evaluation, including CR, PR, stable disease (SD), progressive disease (PD), and not evaluable for response (NE).

  6. Disease Control Rate (DCR)

    Time frame: Screening up to study completion, an average of 2 years.

    Disease Control Rate (DCR) DCR refers to the time from the first occurrence of CR or PR to PD or death from any cause, whichever occurs first, in subjects with objective response. For subjects who have a confirmed CR or PR, DoR is calculated as the time from the date of first assessment confirming CR or PR to the date of first recorded radiographic disease progression or death from any cause, whichever occurs first. If the subject does not experience PD or death or is lost to follow-up at the end of study, DoR will be censored at the time of the last tumor evaluation.

  7. rPFS (radiographic progression-free survival

    Time frame: Screening up to study completion, an average of 2 years.

    rPFS refers to the time from the first dose of investigational drug to the first radiographic PD or death from any cause (whichever occurs first) as assessed by the investigator. Radiographic disease progression includes both bone progression (based on PCWG3 criteria) and soft tissue progression (based on RECIST v1.1 criteria), with either type of progression counting as progression.

  8. PSA Response Rate at the end of Week 12

    Time frame: Screening up to the end of Week 12 , up to 4 months.

    Refers to proportion of subjects with a ≥50% decline in serum PSA levels from baseline (PSA50) at the end of 12 weeks of study treatment.

  9. Proportion of Subjects with PSA50 (≥ 50% decline in serum PSA from baseline)

    Time frame: Screening up to the end of treatment, an average of 1 year.

    Refers to proportion of subjects with a ≥50% decline in serum PSA levels from baseline (PSA50) throughout the study treatment period.

  10. Proportion of Subjects with PSA30 (≥ 30% decline in serum PSA from baseline)

    Time frame: Screening up to the end of treatment, an average of 1 year.

    Refers to proportion of subjects with a ≥30% decline in serum PSA levels from baseline (PSA30) throughout the study treatment period.

  11. Time to PSA Progression

    Time frame: From the date of first drug administration to the date of first PSA progression, an average of 1 year.

    Refers to time from the date of first drug administration to the date of first PSA progression. PSA progression is determined based on PCWG3 criteria.

  12. Overall Survival (OS)

    Time frame: From the date of first drug administration to the date of death from any cause, an average of 2 year.

    OS refers to the time from the date of first drug administration to the date of death from any cause. From the date of first drug administration to the date of death from any cause.

Study contacts

Contact information is provided by the study sponsor or research team.

Kathy You

CONTACT

[email protected]

+61 02 9299 0433

Ravi Patel

CONTACT

[email protected]

+61 452 363 506

Sponsors and collaborators

Lead sponsor

Atridia Pty Ltd.

Industry

Registry information

Official study title

A Phase I, Open-label, Multi-Center, Non-Randomized Study to Evaluate the Safety, Tolerability, Pharmacokinetics and Efficacy of HRS-5041 in Subjects With Metastatic Castration-resistant Prostate Cancer

Important dates

Study start
2025
Primary completion
2026
Study completion
2027
First posted
Feb 17, 2025
Registry last updated
Jan 15, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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