Efficacy and Safety of Organoid-Based Drug Sensitivity Screening to Guide the Treatment of mCRPC Patients Progressed After First-line Treatment

A Prospective, Open-label, Single-arm Study on the Efficacy and Safety of Organoid-Based Drug Sensitivity Screening to Guide the Treatment of mCRPC Patients With Bone Metastasis Progressed After First-line Treatment

This observational study aims to learn about the effects and safety of organoid-based drug sensitivity screening in mCRPC patients with bone metastases that progressed after first-line treatment. The main question it seeks to answer is:

Do doctors choose treatment agents based on organoid-based drug sensitivity screening results for mCRPC patients, resulting in a better response?

Participants already took bone metastasis biopsies for genetic testing based on current clinical guidelines. This study only takes residual tissue from biopsies for organoid culture.

Study Overview

• Status: Recruiting
• Conditions: Metastatic Castration-resistant Prostate Cancer
• Intervention / Treatment: Other: Organoid-Based Drug Sensitivity Screening

• Study Type: Observational
• Enrollment (Estimated): 30

Contacts and Locations

• Study Contact: Name: Yonghong Li, MD; Phone Number: 02087343656; Email: liyongh@sysucc.org.cn
• Study Contact Backup: Name: Diwei Zhao; Phone Number: 15989568094; Email: zhaodw@sysucc.org.cn

Study Locations

• China
  • Guangdong
    • Guangzhou, Guangdong, China, 510060
      • Recruiting
      • Sun Yat-Sen University Cancer Center
      • Contact: Diwei Zhao; Phone Number: 15989568094; Email: zhaodw@sysucc.org.cn
      • Contact: Yonghong Li; Email: liyongh@sysucc.org.cn

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult; Older Adult
• Accepts Healthy Volunteers: No

• Sampling Method: Probability Sample

Study Population

mCRPC patients with bone metastases and progressed after first-line treatment of mCRPC stage

Description

Inclusion Criteria:

1. Willing and able to provide informed consent.
2. Adult males from 18 to 75 years age.
3. History of histologically or cytologically confirmed adenocarcinoma
4. Documented evidence of metastatic castration resistant prostate cancer (mCRPC) and progressed after first-line treatment at mCRPC.
5. Evidence of target lesion in imaging studies.
6. ECOG performance status 0-1
7. Estimated survival≥12 weeks

Exclusion Criteria:

1. Do not meet the inclusion criteria.
2. Under any other anti-tumor therapy like chemotherapy and/or immunotherapy.
3. Receiving organ transplantation in the last 3 months.
4. Participants with autoimmune diseases or history of HBV, HCV or HIV infection (acute).
5. Participants with pneumonia.
6. Severe concurrent illness or co-morbid disease that would make the subject unsuitable for enrolment
7. Unwilling and unable to provide informed consent.
8. Patients who are judged unsuitable for clinical trial participation by the investigators.

Study Plan

How is the study designed?

Number of groups / cohorts

1

Cohorts and Interventions

Group / Cohort	Intervention / Treatment
Organoid-Based Drug Sensitivity Screening; Organoid culture and drug sensitivity screening	Other: Organoid-Based Drug Sensitivity Screening; Residual tissue of bone metastatic sites from biopsies for genetic testing will be collected to culture organoid and perform drug sensitivity screening

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Prostate Specific Antigen (PSA) Response Rate	Proportion of patients with a 50% decrease in PSA from baseline	From enrollment to primary completion of study (up to approximately 3 years)

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Radiologic Progression-free Survival (rPFS)	Radiologic progression-free survival will be assessed from the time of the first dose to radiologic disease progression or death from any cause, whichever comes first.	3 years
Objective Response Rate (ORR)	Proportion of patients in complete remission (CR) plus partial remission (PR)	From enrollment to primary completion of study (up to approximately 3 years)
Duration of Response (DOR)	Time from the start of the first assessment of the tumor as CR or PR to the first assessment of PD (Progressive Disease) or death from any cause.	From enrollment to primary completion of study (up to approximately 3 years)
Overall Survival (OS)	Time between the start of treatment and death from any cause	From enrollment to primary completion of study (up to approximately 3 years)

Collaborators and Investigators

• Sponsor: Sun Yat-sen University

Study record dates

Study Major Dates

• Study Start (Estimated): July 24, 2024
• Primary Completion (Estimated): July 23, 2027
• Study Completion (Estimated): December 31, 2027

Study Registration Dates

• First Submitted: July 26, 2024
• First Submitted That Met QC Criteria: July 26, 2024
• First Posted (Actual): July 31, 2024

Study Record Updates

• Last Update Posted (Actual): July 31, 2024
• Last Update Submitted That Met QC Criteria: July 26, 2024
• Last Verified: July 1, 2024

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Immune System Diseases; Neoplasms; Urogenital Neoplasms; Neoplasms by Site; Genital Neoplasms, Male; Prostatic Diseases; Urogenital Diseases; Male Urogenital Diseases; Genital Diseases, Male; Genital Diseases; Hypersensitivity; Prostatic Neoplasms
• Other Study ID Numbers: 2024-FXY-231

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: UNDECIDED

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No