Trial Outcomes & Findings for To Evaluate the Feasibility, Preliminary Safety and Performance of Rezūm System in BPH Treatment in China (NCT NCT04823221)

Last Updated: 2022-03-02

Results Overview

International prostate symptom score (IPSS) is a questionnaire used to indicate the severity of LUTS symptoms, There are 7 questions relating to different symptoms subjects be experiencing. 7 questions about patients' urinating include Incomplete emptying, Frequency, Intermittency, Urgency, Weak stream, Straining and Nocturia, every question have 0-5 scores according to Prostate Symptom, the higher score mean patient have more severe the symptoms. IPSS total score: the minimum score is 0 and maximum score are 35. IPSS total 0-7 scores are mild symptoms, IPSS total 8-19 scores are moderate symptoms and IPSS total 20-35 scores are severe symptoms The change was the value at the baseline minus the value at last follow-up date, anywhere between month 3 - month 6 minus

Recruitment status

COMPLETED

Target enrollment

22 participants

Primary outcome timeframe

from baseline to the last follow-up date, anywhere between month 3 - month 6 post Rezūm procedure

Results posted on

2022-03-02

Participant Flow

Participant milestones

Participant milestones
Measure	Rezūm System Rezūm System: The basic principle of the Rezūm System is to deliver a controlled amount of sterile water vapor directly into the hyperplastic tissue in the transition zone of the prostate using a transurethral approach .The stored thermal energy in the vapor is transferred directly onto the cell membranes as the vapor condenses and releases the heat of condensation, causing cell death. Inaddition, this thermal energy transfer collapses the vasculature within the treatment zone, resulting in a bloodless procedure. During procedure the water vapor is created by a heating element in the Rezūm Delivery Device,Saline flush during vapor delivery protects and preserves the urethra.
Overall Study STARTED	22
Overall Study COMPLETED	22
Overall Study NOT COMPLETED	0

Reasons for withdrawal

Withdrawal data not reported

Baseline Characteristics

To Evaluate the Feasibility, Preliminary Safety and Performance of Rezūm System in BPH Treatment in China

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure	Rezūm System n=22 Participants Rezūm System: The basic principle of the Rezūm System is to deliver a controlled amount of sterile water vapor directly into the hyperplastic tissue in the transition zone of the prostate using a transurethral approach .The stored thermal energy in the vapor is transferred directly onto the cell membranes as the vapor condenses and releases the heat of condensation, causing cell death. Inaddition, this thermal energy transfer collapses the vasculature within the treatment zone, resulting in a bloodless procedure. During procedure the water vapor is created by a heating element in the Rezūm Delivery Device,Saline flush during vapor delivery protects and preserves the urethra.
Age, Categorical <=18 years	0 Participants n=93 Participants
Age, Categorical Between 18 and 65 years	16 Participants n=93 Participants
Age, Categorical >=65 years	6 Participants n=93 Participants
Age, Continuous	61 years STANDARD_DEVIATION 5.9 • n=93 Participants
Sex: Female, Male Female	0 Participants n=93 Participants
Sex: Female, Male Male	22 Participants n=93 Participants
Race (NIH/OMB) American Indian or Alaska Native	0 Participants n=93 Participants
Race (NIH/OMB) Asian	22 Participants n=93 Participants
Race (NIH/OMB) Native Hawaiian or Other Pacific Islander	0 Participants n=93 Participants
Race (NIH/OMB) Black or African American	0 Participants n=93 Participants
Race (NIH/OMB) White	0 Participants n=93 Participants
Race (NIH/OMB) More than one race	0 Participants n=93 Participants
Race (NIH/OMB) Unknown or Not Reported	0 Participants n=93 Participants
Region of Enrollment China	22 participants n=93 Participants
Weight	76.3 Kg STANDARD_DEVIATION 9 • n=93 Participants
Prostate Volume (cm^3) Doppler ultrasound(DUS)	37.7 cm3 STANDARD_DEVIATION 9.5 • n=93 Participants
Prostate Volume (cm^3) Magnetic Resonance Imaging (MRI)	43.7 cm3 STANDARD_DEVIATION 8.4 • n=93 Participants
Peak flow rate (Qmax))	11.9 mL/second STANDARD_DEVIATION 3.4 • n=93 Participants

PRIMARY outcome

Timeframe: from baseline to the last follow-up date, anywhere between month 3 - month 6 post Rezūm procedure

Outcome measures

Outcome measures
Measure	Rezūm System n=22 Participants The basic principle of the Rezūm System is to deliver a controlled amount of sterile water vapor directly into the hyperplastic tissue in the transition zone of the prostate using a transurethral approach .The stored thermal energy in the vapor is transferred directly onto the cell membranes as the vapor condenses and releases the heat of condensation, causing cell death. Inaddition, this thermal energy transfer collapses the vasculature within the treatment zone, resulting in a bloodless procedure. During procedure the water vapor is created by a heating element in the Rezūm Delivery Device,Saline flush during vapor delivery protects and preserves the urethra. Rezūm System: The basic principle of the Rezūm System is to deliver a controlled amount of sterile water vapor directly into the hyperplastic tissue in the transition zone of the prostate using a transurethral approach .The stored thermal energy in the vapor is transferred directly onto the cell membranes as the vapor condenses and releases the heat of condensation, causing cell death. Inaddition, this thermal energy transfer collapses the vasculature within the treatment zone, resulting in a bloodless procedure. During procedure the water vapor is created by a heating element in the Rezūm Delivery Device,Saline flush during vapor delivery protects and preserves the urethra.
International Prostate Symptom Score (IPSS) Change From Baseline to the Last Follow-up Date, Anywhere Between Month 3 - Month 6 Post Rezūm Procedure.	14.9 scores on a scale Standard Deviation 4.4

PRIMARY outcome

Timeframe: from Rezūm procedure to the last follow-up date, anywhere between month 3 - month 6 post Rezūm procedure.

Composite device related serious complications for this endpoint are defined as: 1. Device perforation of the rectum or GI tract; 2. Device related formation of fistula between the rectum and urethra; 3. De novo severe urinary retention lasting more than 21 consecutive days post treatment.

Outcome measures

Outcome measures
Measure	Rezūm System n=22 Participants The basic principle of the Rezūm System is to deliver a controlled amount of sterile water vapor directly into the hyperplastic tissue in the transition zone of the prostate using a transurethral approach .The stored thermal energy in the vapor is transferred directly onto the cell membranes as the vapor condenses and releases the heat of condensation, causing cell death. Inaddition, this thermal energy transfer collapses the vasculature within the treatment zone, resulting in a bloodless procedure. During procedure the water vapor is created by a heating element in the Rezūm Delivery Device,Saline flush during vapor delivery protects and preserves the urethra. Rezūm System: The basic principle of the Rezūm System is to deliver a controlled amount of sterile water vapor directly into the hyperplastic tissue in the transition zone of the prostate using a transurethral approach .The stored thermal energy in the vapor is transferred directly onto the cell membranes as the vapor condenses and releases the heat of condensation, causing cell death. Inaddition, this thermal energy transfer collapses the vasculature within the treatment zone, resulting in a bloodless procedure. During procedure the water vapor is created by a heating element in the Rezūm Delivery Device,Saline flush during vapor delivery protects and preserves the urethra.
Device Related Serious Complications From Rezūm Procedure to the Last Follow-up Date, Anywhere Between Month 3 - Month 6 Post Rezūm Procedure.	0 adverse events

SECONDARY outcome

Timeframe: During Rezūm procedure

Rezūm procedure time is refers to the urethral entry of the catheter by Rezūm and exit after the ablation of the catheter by Rezūm

Outcome measures

Outcome measures
Measure	Rezūm System n=22 Participants The basic principle of the Rezūm System is to deliver a controlled amount of sterile water vapor directly into the hyperplastic tissue in the transition zone of the prostate using a transurethral approach .The stored thermal energy in the vapor is transferred directly onto the cell membranes as the vapor condenses and releases the heat of condensation, causing cell death. Inaddition, this thermal energy transfer collapses the vasculature within the treatment zone, resulting in a bloodless procedure. During procedure the water vapor is created by a heating element in the Rezūm Delivery Device,Saline flush during vapor delivery protects and preserves the urethra. Rezūm System: The basic principle of the Rezūm System is to deliver a controlled amount of sterile water vapor directly into the hyperplastic tissue in the transition zone of the prostate using a transurethral approach .The stored thermal energy in the vapor is transferred directly onto the cell membranes as the vapor condenses and releases the heat of condensation, causing cell death. Inaddition, this thermal energy transfer collapses the vasculature within the treatment zone, resulting in a bloodless procedure. During procedure the water vapor is created by a heating element in the Rezūm Delivery Device,Saline flush during vapor delivery protects and preserves the urethra.
Rezūm Procedure Time	3.9 Minutes Standard Deviation 1.6

SECONDARY outcome

Timeframe: 1 month post Rezum procedure

Length of Catheterization is the date from date of catheter implantation to date of catheter removal

Outcome measures

Outcome measures
Measure	Rezūm System n=22 Participants The basic principle of the Rezūm System is to deliver a controlled amount of sterile water vapor directly into the hyperplastic tissue in the transition zone of the prostate using a transurethral approach .The stored thermal energy in the vapor is transferred directly onto the cell membranes as the vapor condenses and releases the heat of condensation, causing cell death. Inaddition, this thermal energy transfer collapses the vasculature within the treatment zone, resulting in a bloodless procedure. During procedure the water vapor is created by a heating element in the Rezūm Delivery Device,Saline flush during vapor delivery protects and preserves the urethra. Rezūm System: The basic principle of the Rezūm System is to deliver a controlled amount of sterile water vapor directly into the hyperplastic tissue in the transition zone of the prostate using a transurethral approach .The stored thermal energy in the vapor is transferred directly onto the cell membranes as the vapor condenses and releases the heat of condensation, causing cell death. Inaddition, this thermal energy transfer collapses the vasculature within the treatment zone, resulting in a bloodless procedure. During procedure the water vapor is created by a heating element in the Rezūm Delivery Device,Saline flush during vapor delivery protects and preserves the urethra.
Length of Catheterization	4.8 days Standard Deviation 1.1

SECONDARY outcome

Timeframe: from baseline to the last follow-up date, anywhere between month 3 - month 6 post Rezūm procedure.

Population: Only 11 subjects completed Qmax in 3-6 months

The change of Peak Flow Rate (Qmax) from baseline to the last follow-up date, anywhere between month 3 - month 6 post Rezūm procedure. Which are the value at the last follow-up date, anywhere between month 3 - month 6 minus value at baseline

Outcome measures

Outcome measures
Measure	Rezūm System n=11 Participants The basic principle of the Rezūm System is to deliver a controlled amount of sterile water vapor directly into the hyperplastic tissue in the transition zone of the prostate using a transurethral approach .The stored thermal energy in the vapor is transferred directly onto the cell membranes as the vapor condenses and releases the heat of condensation, causing cell death. Inaddition, this thermal energy transfer collapses the vasculature within the treatment zone, resulting in a bloodless procedure. During procedure the water vapor is created by a heating element in the Rezūm Delivery Device,Saline flush during vapor delivery protects and preserves the urethra. Rezūm System: The basic principle of the Rezūm System is to deliver a controlled amount of sterile water vapor directly into the hyperplastic tissue in the transition zone of the prostate using a transurethral approach .The stored thermal energy in the vapor is transferred directly onto the cell membranes as the vapor condenses and releases the heat of condensation, causing cell death. Inaddition, this thermal energy transfer collapses the vasculature within the treatment zone, resulting in a bloodless procedure. During procedure the water vapor is created by a heating element in the Rezūm Delivery Device,Saline flush during vapor delivery protects and preserves the urethra.
The Change of Peak Flow Rate (Qmax) From Baseline to the Last Follow-up Date, Anywhere Between Month 3 - Month 6 Post Rezūm Procedure.	13.3 mL/second Standard Deviation 9.9

SECONDARY outcome

Timeframe: from baseline to the last follow-up date, anywhere between month 3 - month 6 post Rezūm procedure.

Population: Only 15 subjects completed PVR test in 3-6 month.

The change of Post Void Residual Urine Volume (PVR）from baseline to the last follow-up date, anywhere between month 3 - month 6 post Rezūm procedure. The change are the baseline value minus the value at the last follow-up date, anywhere between month 3 - month 6 minus.

Outcome measures

Outcome measures
Measure	Rezūm System n=15 Participants The basic principle of the Rezūm System is to deliver a controlled amount of sterile water vapor directly into the hyperplastic tissue in the transition zone of the prostate using a transurethral approach .The stored thermal energy in the vapor is transferred directly onto the cell membranes as the vapor condenses and releases the heat of condensation, causing cell death. Inaddition, this thermal energy transfer collapses the vasculature within the treatment zone, resulting in a bloodless procedure. During procedure the water vapor is created by a heating element in the Rezūm Delivery Device,Saline flush during vapor delivery protects and preserves the urethra. Rezūm System: The basic principle of the Rezūm System is to deliver a controlled amount of sterile water vapor directly into the hyperplastic tissue in the transition zone of the prostate using a transurethral approach .The stored thermal energy in the vapor is transferred directly onto the cell membranes as the vapor condenses and releases the heat of condensation, causing cell death. Inaddition, this thermal energy transfer collapses the vasculature within the treatment zone, resulting in a bloodless procedure. During procedure the water vapor is created by a heating element in the Rezūm Delivery Device,Saline flush during vapor delivery protects and preserves the urethra.
Post Void Residual Urine Volume (PVR）	11.6 ml Standard Deviation 22.4

SECONDARY outcome

Timeframe: from baseline to the last follow-up date, anywhere between month 3 - month 6 post Rezum procedure

Population: Only 20 subjects completed Quality of Life testing in 3-6 months post Rezum procedure.

The change of Quality of Life from baseline to the last follow-up date, anywhere between month 3 - month 6 post Rezum procedure. There is only 1 question about Quality of life due to urinary symptoms which is 'If you were to spend the rest of your life with your urinary condition the way it is now, how would you feel about that?' This question have 0-6 scores according to patient's satisfaction about Quality of Life, the higher score mean patient have poor satisfaction. The change was the baseline value minus the value at the last follow-up date, anywhere between month 3 - month 6.

Outcome measures

Outcome measures
Measure	Rezūm System n=20 Participants The basic principle of the Rezūm System is to deliver a controlled amount of sterile water vapor directly into the hyperplastic tissue in the transition zone of the prostate using a transurethral approach .The stored thermal energy in the vapor is transferred directly onto the cell membranes as the vapor condenses and releases the heat of condensation, causing cell death. Inaddition, this thermal energy transfer collapses the vasculature within the treatment zone, resulting in a bloodless procedure. During procedure the water vapor is created by a heating element in the Rezūm Delivery Device,Saline flush during vapor delivery protects and preserves the urethra. Rezūm System: The basic principle of the Rezūm System is to deliver a controlled amount of sterile water vapor directly into the hyperplastic tissue in the transition zone of the prostate using a transurethral approach .The stored thermal energy in the vapor is transferred directly onto the cell membranes as the vapor condenses and releases the heat of condensation, causing cell death. Inaddition, this thermal energy transfer collapses the vasculature within the treatment zone, resulting in a bloodless procedure. During procedure the water vapor is created by a heating element in the Rezūm Delivery Device,Saline flush during vapor delivery protects and preserves the urethra.
Quality of Life (Qol)	2.5 scores on a scale Standard Deviation 0.9

SECONDARY outcome

Timeframe: from baseline to the last follow-up date, anywhere between month 3 - month 6 post Rezum procedure

Population: Only 18 subjects completed Ejective function assessment

The change of Ejective function-Male Sexual Health Questionnaire Short Form- Ejaculation dysfunction（MSHQ-EjD ) from baseline to the last follow-up date, anywhere between month 3 - month 6 post Rezum procedure. Ejective function (MSHQ-EjD) is a questionnaire used to assess the ejective function. There are 4 questions relating to Ejaculation dysfunction which need patients to answer. 3 questions about patients' ejective function assessing include completion of ejaculation, Strength of ejaculation and Volume of semen when ejaculation. Every question have 0-5 scores according to assessing the ejective function, the lower score mean patient have more severe the ejective function. MSHQ-EjD total score: the minimum score is 0 and maximum score are 15. The change are the value at the last follow-up date, anywhere between month 3 - month 6 minus value at baseline

Outcome measures

Outcome measures
Measure	Rezūm System n=18 Participants The basic principle of the Rezūm System is to deliver a controlled amount of sterile water vapor directly into the hyperplastic tissue in the transition zone of the prostate using a transurethral approach .The stored thermal energy in the vapor is transferred directly onto the cell membranes as the vapor condenses and releases the heat of condensation, causing cell death. Inaddition, this thermal energy transfer collapses the vasculature within the treatment zone, resulting in a bloodless procedure. During procedure the water vapor is created by a heating element in the Rezūm Delivery Device,Saline flush during vapor delivery protects and preserves the urethra. Rezūm System: The basic principle of the Rezūm System is to deliver a controlled amount of sterile water vapor directly into the hyperplastic tissue in the transition zone of the prostate using a transurethral approach .The stored thermal energy in the vapor is transferred directly onto the cell membranes as the vapor condenses and releases the heat of condensation, causing cell death. Inaddition, this thermal energy transfer collapses the vasculature within the treatment zone, resulting in a bloodless procedure. During procedure the water vapor is created by a heating element in the Rezūm Delivery Device,Saline flush during vapor delivery protects and preserves the urethra.
Ejective Function (MSHQ-EjD)	2.6 scores on a scale Standard Deviation 3.5

SECONDARY outcome

Timeframe: From baseline to the last follow-up date, anywhere between month 3 - month 6

The change of the International Index of Erectile Function(IIEF) from baseline to the last follow-up date, anywhere between month 3 - month 6 post Rezum procedure. Erectile Function(IIEF) is a questionnaire used to assess the Sexual Health Inventory of men. There are 5 questions relating to Erectile Function which need patients to answer. Every question have 0-5 scores, the lower score mean patient have more severe the Erectile Function. The IIEF-5 is administered as a screening instrument for the presence \& severity of ED in conjunction with the clinical assessment. The score is the sun of the responses to the five items, so that overall score may range from 0 to 25. A score of 20 or higher indicates a normal degree of erectile functioning. Low scores (10 or less) indicate moderate to severe ED. The change are the value at the last follow-up date, anywhere between month 3 - month 6 minus value at baseline

Outcome measures

Outcome measures
Measure	Rezūm System n=18 Participants The basic principle of the Rezūm System is to deliver a controlled amount of sterile water vapor directly into the hyperplastic tissue in the transition zone of the prostate using a transurethral approach .The stored thermal energy in the vapor is transferred directly onto the cell membranes as the vapor condenses and releases the heat of condensation, causing cell death. Inaddition, this thermal energy transfer collapses the vasculature within the treatment zone, resulting in a bloodless procedure. During procedure the water vapor is created by a heating element in the Rezūm Delivery Device,Saline flush during vapor delivery protects and preserves the urethra. Rezūm System: The basic principle of the Rezūm System is to deliver a controlled amount of sterile water vapor directly into the hyperplastic tissue in the transition zone of the prostate using a transurethral approach .The stored thermal energy in the vapor is transferred directly onto the cell membranes as the vapor condenses and releases the heat of condensation, causing cell death. Inaddition, this thermal energy transfer collapses the vasculature within the treatment zone, resulting in a bloodless procedure. During procedure the water vapor is created by a heating element in the Rezūm Delivery Device,Saline flush during vapor delivery protects and preserves the urethra.
The Change of International Index of Erectile Function(IIEF) From Baseline to the Last Follow-up Date, Anywhere Between Month 3 - Month 6	2.7 scores on a scale Standard Deviation 5.1

Adverse Events

Rezūm System

Serious events: 0 serious events

Other events: 22 other events

Deaths: 0 deaths

Serious adverse events

Adverse event data not reported

Other adverse events

Other adverse events
Measure	Rezūm System n=22 participants at risk The basic principle of the Rezūm System is to deliver a controlled amount of sterile water vapor directly into the hyperplastic tissue in the transition zone of the prostate using a transurethral approach .The stored thermal energy in the vapor is transferred directly onto the cell membranes as the vapor condenses and releases the heat of condensation, causing cell death. Inaddition, this thermal energy transfer collapses the vasculature within the treatment zone, resulting in a bloodless procedure. During procedure the water vapor is created by a heating element in the Rezūm Delivery Device,Saline flush during vapor delivery protects and preserves the urethra. Rezūm System: The basic principle of the Rezūm System is to deliver a controlled amount of sterile water vapor directly into the hyperplastic tissue in the transition zone of the prostate using a transurethral approach .The stored thermal energy in the vapor is transferred directly onto the cell membranes as the vapor condenses and releases the heat of condensation, causing cell death. Inaddition, this thermal energy transfer collapses the vasculature within the treatment zone, resulting in a bloodless procedure. During procedure the water vapor is created by a heating element in the Rezūm Delivery Device,Saline flush during vapor delivery protects and preserves the urethra.
Renal and urinary disorders Urethral disorder	86.4% 19/22 • Number of events 19 • Adverse event data were collected in 6 months post Rezūm procedure
Renal and urinary disorders Haematuria	68.2% 15/22 • Number of events 15 • Adverse event data were collected in 6 months post Rezūm procedure

Additional Information

Dr. Ming Liu

Boao Yiling Life Care Center

Phone: 139 1103 6970

Email: [email protected]

Results disclosure agreements

Principal investigator is a sponsor employee
Publication restrictions are in place