Prostate CancerNCT05202340
Factors Affecting Androgen Deprivation Therapy Choice in Prostate Cancer Patients
An observational study of Prostate Cancer, run by Chinese University of Hong Kong at 1 site in Hong Kong.
Trial summary
The objective of this study is to investigate possible factors that will affect the choice of androgen deprivation therapy in prostate cancer patients. This is a cross-sectional study performed in Prince of Wales Hospital in Hong Kong. One hundred patients will be recruited for this study. Read more about this study
- Who is it for?
- Ages 18 years and older, men only
- Conditions the study is for
- Prostate Cancer
- How many people
- 100 participants
- Where
- 1 siteHong Kong
- Study dates
- 7 Jan 2022to 28 Feb 2023
- Phase
- Observational
- Are there results?
- None posted in the registry
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
Study population: Patients diagnosed with prostate cancer in Prince of Wales Hospital will be identified in specialist clinics and then enrolled to the study,
Who may be able to join
- Prostate cancer only happens in male patients
- Patients who are currently receiving at least one dose of LHRH agonist or antagonist, as androgen deprivation therapy
- Patients who are willing to consent and participate in this study
Who cannot join
- Patients who received bilateral orchidectomy as androgen deprivation therapy
- Patients who, in the opinion of investigators, are not able to comprehend about the study questions
Trial locations and contacts
1 site in 1 country.
About this study
Official title: A Survey to Investigate Possible Factors That Will Affect the Choice of Androgen Deprivation Therapy in Prostate Cancer Patients
The objective of this study is to investigate possible factors that will affect the choice of androgen deprivation therapy in prostate cancer patients. This is a cross-sectional study performed in Prince of Wales Hospital in Hong Kong. One hundred patients will be recruited for this study.
Read the detailed description
The incidence of prostate cancer in Hong Kong almost tripled between 1996 and 2010, with the highest increased incidence rate in total forms of malignancy. The incidence of prostate cancer in Hong Kong increased up to 28.9 per 100,000 men in 2017 (Age-standardized rate) (Hong Kong Cancer Registry 2017) and ranked third in all men cancers in Hong Kong. Certain environmental elements have had an effect on the increased rate of prostate cancer, including the transition to Western dietary habits and an aging population because of the rise in average life expectancy. In addition to environmental causes, the medical development of laboratory diagnoses and wide prostate-specific antigen usage in Hong Kong have also contributed to the increase in diagnosis of prostate cancer in recent years. Certainly, the efforts from different health bodies in public education about the condition have helped to raise public awareness about the condition, which also increase the pick-up of early disease in Hong Kong.
Androgen deprivation treatment (ADT) has become the standard treatment for metastatic prostate cancer in the past decades. Androgen deprivation can be achieved by three main modalities, namely bilateral orchidectomy, gonadotropin-releasing hormone (GnRH) agonist and GnRH antagonist. Apart from injectable ADT, oral GnRH antagonist has been approved recently. ADT can be different in terms of mechanism of action, route of drug administration (injection vs oral), site of injection and frequency of drug administration. Each different formulation may contribute to patient's choice on their drug usage [1-3]. However, information regarding the preference of choice and factors affecting the choice of ADT formulation were not available in the literature. Therefore, in this study, possible factors that will affect patient's choice of ADT, reason and preference on their ADT choice will be investigated.
The objective of this study is to investigate possible factors that will affect patient's choice of ADT therapy. This is a cross-sectional study performed in Prince of Wales Hospital in Hong Kong. One hundred patients will be recruited for this study.
After obtaining informed consent, trained research staffs will assist the subjects to perform this cross-sectional survey. Information related to patients' background (including, but not limited to: age, educational level, work-status, living situation), disease background (stage of disease), concomitant drug usage \& administrative frequency, preference on drug usage (ADT vs injection; frequency of drug administration), history of ADT usage, reason and preference on their ADT choice, will be collected from the survey.
- Conditions
- Prostate Cancer
- Being tested
- No intervention
- Keywords
- Prostate Cancer, Androgen Deprivation Therapy
- Medical subject headings
- Prostatic Neoplasms
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
No interventionOther
No intervention
| Study group | Role | What they receive |
|---|---|---|
| Prostate Cancer | Patients diagnosed with prostate cancer Receives: Other: No intervention |
What is being measured
The primary outcome is the main question the study is designed to answer.
Possible factors that will affect patient's choice of ADT therapy
Possible factors that will affect patient's choice of ADT therapy
Measured: 1 year
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted21 Jan 2022
- Study start7 Jan 2022
- Primary completion31 Dec 2022
- Study completion28 Feb 2023
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (3)Papers the sponsor has linked to this study.
- Other trials for Prostate CancerStudies of the same condition, open and under way.
- More trials run by Chinese University of Hong KongThe 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
- Observational
- Observational model
- Cohort
- Time perspective
- Cross-sectional
- Enrolment
- 100 participants (actual)
Sponsor and investigators
- Lead sponsor
- Chinese University of Hong Kong
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, NG Chi Fai, Chinese University of Hong Kong
- Investigators
- Chi Fai NG, MD, Principal investigator, Chinese University of Hong Kong
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT05202340
- Sponsor's protocol ID
- CRE-2021.492
- Status last verified
- Oct 2026
- First submitted
- 9 Jan 2022
- Last updated
- 27 Oct 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Publications
Psarou A, Cooper H, Wilding JPH. Patients' Perspectives of Oral and Injectable Type 2 Diabetes Medicines, Their Body Weight and Medicine-Taking Behavior in the UK: A Systematic Review and Meta-Ethnography. Diabetes Ther. 2018 Oct;9(5):1791-1810. doi: 10.1007/s13300-018-0490-5. Epub 2018 Aug 17.
PubMed 30120753Blackwood C, Sanga P, Nuamah I, Keenan A, Singh A, Mathews M, Gopal S. Patients' Preference for Long-Acting Injectable versus Oral Antipsychotics in Schizophrenia: Results from the Patient-Reported Medication Preference Questionnaire. Patient Prefer Adherence. 2020 Jul 2;14:1093-1102. doi: 10.2147/PPA.S251812. eCollection 2020.
PubMed 32753849Kane JM, Leucht S, Carpenter D, Docherty JP; Expert Consensus Panel for Optimizing Pharmacologic Treatment of Psychotic Disorders. The expert consensus guideline series. Optimizing pharmacologic treatment of psychotic disorders. Introduction: methods, commentary, and summary. J Clin Psychiatry. 2003;64 Suppl 12:5-19.
PubMed 14640142
Study at a glance
From the registry record, last updated by the sponsor on 27 Oct 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Survey to Investigate Possible Factors That Will Affect the Choice of Androgen Deprivation Therapy in Prostate Cancer Patients
- ClinicalTrials.gov ID
- NCT05202340
- Acronym / sponsor ID
- CRE-2021.492
- Conditions
- Prostate Cancer
- Keywords
- Prostate Cancer, Androgen Deprivation Therapy
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 100 participants (actual)
- Lead sponsor
- Chinese University of Hong KongUniversity, hospital or other
- Study start
- 7 Jan 2022 (actual)
- Primary completion
- 31 Dec 2022 (actual)
- Study completion
- 28 Feb 2023 (actual)
- First posted
- 21 Jan 2022 (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.
The objective of this study is to investigate possible factors that will affect the choice of androgen deprivation therapy in prostate cancer patients. This is a cross-sectional study performed in Prince of Wales Hospital in Hong Kong. One hundred patients will be recruited for this study.
Detailed description
The incidence of prostate cancer in Hong Kong almost tripled between 1996 and 2010, with the highest increased incidence rate in total forms of malignancy. The incidence of prostate cancer in Hong Kong increased up to 28.9 per 100,000 men in 2017 (Age-standardized rate) (Hong Kong Cancer Registry 2017) and ranked third in all men cancers in Hong Kong. Certain environmental elements have had an effect on the increased rate of prostate cancer, including the transition to Western dietary habits and an aging population because of the rise in average life expectancy. In addition to environmental causes, the medical development of laboratory diagnoses and wide prostate-specific antigen usage in Hong Kong have also contributed to the increase in diagnosis of prostate cancer in recent years. Certainly, the efforts from different health bodies in public education about the condition have helped to raise public awareness about the condition, which also increase the pick-up of early disease in Hong Kong.
Androgen deprivation treatment (ADT) has become the standard treatment for metastatic prostate cancer in the past decades. Androgen deprivation can be achieved by three main modalities, namely bilateral orchidectomy, gonadotropin-releasing hormone (GnRH) agonist and GnRH antagonist. Apart from injectable ADT, oral GnRH antagonist has been approved recently. ADT can be different in terms of mechanism of action, route of drug administration (injection vs oral), site of injection and frequency of drug administration. Each different formulation may contribute to patient's choice on their drug usage [1-3]. However, information regarding the preference of choice and factors affecting the choice of ADT formulation were not available in the literature. Therefore, in this study, possible factors that will affect patient's choice of ADT, reason and preference on their ADT choice will be investigated.
The objective of this study is to investigate possible factors that will affect patient's choice of ADT therapy. This is a cross-sectional study performed in Prince of Wales Hospital in Hong Kong. One hundred patients will be recruited for this study.
After obtaining informed consent, trained research staffs will assist the subjects to perform this cross-sectional survey. Information related to patients' background (including, but not limited to: age, educational level, work-status, living situation), disease background (stage of disease), concomitant drug usage \& administrative frequency, preference on drug usage (ADT vs injection; frequency of drug administration), history of ADT usage, reason and preference on their ADT choice, will be collected from the survey.
Study design
- Observational model
- Cohort
- Time perspective
- Cross-sectional
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Prostate Cancer | – | Other: No interventionPatients diagnosed with prostate cancer |
Who may qualify
- Ages
- 18 years and older
- Sex
- Male only
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- Patients diagnosed with prostate cancer in Prince of Wales Hospital will be identified in specialist clinics and then enrolled to the study,
Key inclusion criteria (3 listed)
- Prostate cancer only happens in male patients
- Patients who are currently receiving at least one dose of LHRH agonist or antagonist, as androgen deprivation therapy
- Patients who are willing to consent and participate in this study
Key exclusion criteria (2 listed)
- Patients who received bilateral orchidectomy as androgen deprivation therapy
- Patients who, in the opinion of investigators, are not able to comprehend about the study questions
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 |
|---|---|---|
| No interventionNo intervention | Other | Prostate Cancer |
Primary outcome
Possible factors that will affect patient's choice of ADT therapy
Time frame: 1 year
Possible factors that will affect patient's choice of ADT therapy
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 27 Oct 2026.
- Background: PubMed 30120753Psarou A, Cooper H, Wilding JPH. Patients' Perspectives of Oral and Injectable Type 2 Diabetes Medicines, Their Body Weight and Medicine-Taking Behavior in the UK: A Systematic Review and Meta-Ethnography. Diabetes Ther. 2018 Oct;9(5):1791-1810. doi: 10.1007/s13300-018-0490-5. Epub 2018 Aug 17.
- Background: PubMed 32753849Blackwood C, Sanga P, Nuamah I, Keenan A, Singh A, Mathews M, Gopal S. Patients' Preference for Long-Acting Injectable versus Oral Antipsychotics in Schizophrenia: Results from the Patient-Reported Medication Preference Questionnaire. Patient Prefer Adherence. 2020 Jul 2;14:1093-1102. doi: 10.2147/PPA.S251812. eCollection 2020.
- Background: PubMed 14640142Kane JM, Leucht S, Carpenter D, Docherty JP; Expert Consensus Panel for Optimizing Pharmacologic Treatment of Psychotic Disorders. The expert consensus guideline series. Optimizing pharmacologic treatment of psychotic disorders. Introduction: methods, commentary, and summary. J Clin Psychiatry. 2003;64 Suppl 12:5-19.
- 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. This study is not recruiting at the moment.
Chi Fai NG, MD principal investigator
Chinese University of Hong Kong
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Prostate Cancer, run by Chinese University of Hong Kong at 1 site in Hong Kong.
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 3 inclusion and 2 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: finished, as of the sponsor's last update on 27 Oct 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Hong Kong. Whether a site is taking part right now should be confirmed with that site. See every site.
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.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Possible factors that will affect patient's choice of ADT therapy (time frame: 1 year). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT05202340, which also lists 3 linked publications.
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 27 Oct 2026.