Suspected Prostate CancerAbsVSNCT05192252
Correlation Between Seminal Vesicle Size and Duration of Sexual Abstinence
An observational study of Suspected Prostate Cancer, run by Fondation Hôpital Saint-Joseph at 1 site in France.
Trial summary
The seminal vesicles (SV) are glands that open into the prostatic urethra and secrete seminal fluid, which makes up 50 to 80% of semen. They play an essential role in the male reproductive function. In adults, the size of a seminal vesicle varies from one individual to another. Read more about this study
- Who is it for?
- Ages 45 years and older, men only
- Conditions the study is for
- Suspected Prostate Cancer
- How many people
- 250 participants
- Where
- 1 siteFrance
- Study dates
- 2 Nov 2021to 31 Dec 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 45 years and older
- Men only
- No healthy volunteers
- Adult, Older adult
Study population: Patient performing a prostate MRI for suspected prostate cancer, between 07/06/2021 and 30/10/2022.
Who may be able to join
- Patient whose age ≥ 45 years
- French speaking patient
- Patient performing a prostate MRI for suspected prostate cancer
Who cannot join
- History of curative treatment for prostate cancer (radical prostatectomy, external radiotherapy, brachytherapy, HIFU, cryotherapy)
- Patient under guardianship or curatorship
- Patient deprived of liberty
- Patient under court protection
- Patient objecting to the use of his or her data for this research
Trial locations and contacts
1 site in 1 country.
France1 site, 1 recruiting
- Recruiting
Groupe Hospitalier Paris Saint-Joseph
Paris, 75014
Constance P MICHEL, MD
About this study
The seminal vesicles (SV) are glands that open into the prostatic urethra and secrete seminal fluid, which makes up 50 to 80% of semen. They play an essential role in the male reproductive function. In adults, the size of a seminal vesicle varies from one individual to another. On average, it is 5 to 6 cm long, 1.5 cm wide and 0.5 cm thick. It has a close anatomical relationship with Walsh's vascular-nervous pedicle, which extends the sacro-genital-pubic blades, and is responsible for erection. The reference treatment for localized prostate cancer can consist of two alternatives: either intensity-modulated pelvic radiotherapy with treatment of the entire prostate volume and VS, or surgical removal of the vesiculo-prostatic block in monobloc. It is therefore always extended to the VS.
Magnetic resonance imaging (MRI) is now routinely performed for the initial workup of prostate cancer, with a diagnostic and prognostic role, as invasion of the VS by cancer is recognized as a poor prognostic factor. Some radiology centers recommend 3 days of sexual abstinence to allow a proper seminal vesicle study. Various factors, such as serum testosterone levels, autosomal dominant polycystic kidney disease, smoking, and certain drugs such as SILODOSINE, have been identified as factors that can independently vary seminal vesicle size.
Read more
The duration of sexual abstinence since the last ejaculation also appears to be correlated with seminal vesicle volume. Two recent studies found a correlation between the duration of sexual abstinence and seminal vesicle volume measured on MRI in a young population (median age 35.9 and 46.45 years). This population is not superimposable to that of patients managed for prostate cancer whose average age at diagnosis is 70 years.
However, the control and knowledge of the volume of VS, in this specific population, could have an interest in the treatment of prostate cancer:
- In case of pelvic radiotherapy in order to limit the volume of the organ to be irradiated, the toxicity induced to the adjacent organs being directly associated to the delivered dose.
- In case of radical vesiculo-prostatectomy, by surgical way, the lateral dissection of the vasculo-nerveous bands is made more difficult in case of voluminous seminal vesicles with an increased risk of nerve damage.
Investigators hypothesize that the volume of the VS is correlated with the duration of abstinence. Thus, evacuation of seminal fluid by ejaculation at a defined time before curative treatment of prostate cancer, could improve the functional results of pelvic radiotherapy or surgery.
- Conditions
- Suspected Prostate Cancer
What is being measured
The primary outcome is the main question the study is designed to answer.
Relationship between seminal vesicle volume measured on MRI and duration of sexual abstinence
This outcome corresponds to the Correlation coefficient between seminal vesicle volume measured on 3 Tesla prostate MRI and duration of sexual abstinence.
Measured: Day 1
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted14 Jan 2022
- Study start2 Nov 2021
- Primary completion15 Oct 2023 (estimated)
- Study completion31 Dec 2023 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (8)Papers the sponsor has linked to this study.
- Other trials for Suspected Prostate CancerStudies of the same condition, open and under way.
- 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
- 250 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Fondation Hôpital Saint-Joseph
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Constance MICHEL, MD, Principal investigator, Fondation Hôpital Saint-Joseph
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT05192252
- Sponsor's protocol ID
- AbsVS
- Acronym
- AbsVS
- Status last verified
- Sep 2023
- First submitted
- 31 Dec 2021
- Last updated
- 13 Sep 2023
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Publications
Barrett T, Turkbey B, Choyke PL. PI-RADS version 2: what you need to know. Clin Radiol. 2015 Nov;70(11):1165-76. doi: 10.1016/j.crad.2015.06.093. Epub 2015 Jul 29.
PubMed 26231470Qi X, Gao XS, Asaumi J, Zhang M, Li HZ, Ma MW, Zhao B, Li FY, Wang D. Optimal contouring of seminal vesicle for definitive radiotherapy of localized prostate cancer: comparison between EORTC prostate cancer radiotherapy guideline, RTOG0815 protocol and actual anatomy. Radiat Oncol. 2014 Dec 20;9:288. doi: 10.1186/s13014-014-0288-1.
PubMed 25526901Lotti F, Corona G, Vitale P, Maseroli E, Rossi M, Fino MG, Maggi M. Current smoking is associated with lower seminal vesicles and ejaculate volume, despite higher testosterone levels, in male subjects of infertile couples. Hum Reprod. 2015 Mar;30(3):590-602. doi: 10.1093/humrep/deu347. Epub 2015 Jan 6.
PubMed 25567620Lotti F, Corona G, Maseroli E, Rossi M, Silverii A, Degl'innocenti S, Rastrelli G, Forti G, Maggi M. Clinical implications of measuring prolactin levels in males of infertile couples. Andrology. 2013 Sep;1(5):764-71. doi: 10.1111/j.2047-2927.2013.00114.x.
PubMed 23970454Bozkurt O, Demir O, Sen V, Esen A. Silodosin causes impaired ejaculation and enlargement of seminal vesicles in sexually active men treated for lower urinary tract symptoms suggestive of benign prostatic hyperplasia. Urology. 2015 May;85(5):1085-1089. doi: 10.1016/j.urology.2015.01.011. Epub 2015 Mar 3.
PubMed 25744372Joo I, Kim SH, Cho JY. A comparison of seminal vesicle size on CT between autosomal dominant polycystic kidney disease (ADPKD) patients and normal subjects. Acta Radiol. 2010 Jun;51(5):569-72. doi: 10.3109/02841851003652583.
PubMed 20235741Barrett T, Tanner J, Gill AB, Slough RA, Wason J, Gallagher FA. The longitudinal effect of ejaculation on seminal vesicle fluid volume and whole-prostate ADC as measured on prostate MRI. Eur Radiol. 2017 Dec;27(12):5236-5243. doi: 10.1007/s00330-017-4905-x. Epub 2017 Jul 4.
PubMed 28677052Yuruk E, Pastuszak AW, Suggs JM 3rd, Colakerol A, Serefoglu EC. The association between seminal vesicle size and duration of abstinence from ejaculation. Andrologia. 2017 Sep;49(7):10.1111/and.12707. doi: 10.1111/and.12707. Epub 2016 Sep 23.
PubMed 27660049
Study at a glance
From the registry record, last updated by the sponsor on 13 Sep 2023. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Correlation Between Seminal Vesicle Size and Duration of Sexual Abstinence
- ClinicalTrials.gov ID
- NCT05192252
- Acronym / sponsor ID
- AbsVS / AbsVS
- Conditions
- Suspected Prostate Cancer
- Study type
- Observational
- Recruitment status
- Unknown status
- Enrolment
- 250 participants (estimated)
- Lead sponsor
- Fondation Hôpital Saint-JosephUniversity, hospital or other
- Study start
- 2 Nov 2021 (actual)
- Primary completion
- 15 Oct 2023 (estimated)
- Study completion
- 31 Dec 2023 (estimated)
- First posted
- 14 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 seminal vesicles (SV) are glands that open into the prostatic urethra and secrete seminal fluid, which makes up 50 to 80% of semen. They play an essential role in the male reproductive function. In adults, the size of a seminal vesicle varies from one individual to another. On average, it is 5 to 6 cm long, 1.5 cm wide and 0.5 cm thick. It has a close anatomical relationship with Walsh's vascular-nervous pedicle, which extends the sacro-genital-pubic blades, and is responsible for erection. The reference treatment for localized prostate cancer can consist of two alternatives: either intensity-modulated pelvic radiotherapy with treatment of the entire prostate volume and VS, or surgical removal of the vesiculo-prostatic block in monobloc. It is therefore always extended to the VS.
Magnetic resonance imaging (MRI) is now routinely performed for the initial workup of prostate cancer, with a diagnostic and prognostic role, as invasion of the VS by cancer is recognized as a poor prognostic factor. Some radiology centers recommend 3 days of sexual abstinence to allow a proper seminal vesicle study. Various factors, such as serum testosterone levels, autosomal dominant polycystic kidney disease, smoking, and certain drugs such as SILODOSINE, have been identified as factors that can independently vary seminal vesicle size.
The duration of sexual abstinence since the last ejaculation also appears to be correlated with seminal vesicle volume. Two recent studies found a correlation between the duration of sexual abstinence and seminal vesicle volume measured on MRI in a young population (median age 35.9 and 46.45 years). This population is not superimposable to that of patients managed for prostate cancer whose average age at diagnosis is 70 years.
However, the control and knowledge of the volume of VS, in this specific population, could have an interest in the treatment of prostate cancer:
- In case of pelvic radiotherapy in order to limit the volume of the organ to be irradiated, the toxicity induced to the adjacent organs being directly associated to the delivered dose.
- In case of radical vesiculo-prostatectomy, by surgical way, the lateral dissection of the vasculo-nerveous bands is made more difficult in case of voluminous seminal vesicles with an increased risk of nerve damage.
Investigators hypothesize that the volume of the VS is correlated with the duration of abstinence. Thus, evacuation of seminal fluid by ejaculation at a defined time before curative treatment of prostate cancer, could improve the functional results of pelvic radiotherapy or surgery.
Study design
- Observational model
- Cohort
- Time perspective
- Cross-sectional
Who may qualify
- Ages
- 45 years and older
- Sex
- Male only
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- Patient performing a prostate MRI for suspected prostate cancer, between 07/06/2021 and 30/10/2022.
Key inclusion criteria (3 listed)
- Patient whose age ≥ 45 years
- French speaking patient
- Patient performing a prostate MRI for suspected prostate cancer
Key exclusion criteria (5 listed)
- History of curative treatment for prostate cancer (radical prostatectomy, external radiotherapy, brachytherapy, HIFU, cryotherapy)
- Patient under guardianship or curatorship
- Patient deprived of liberty
- Patient under court protection
- Patient objecting to the use of his or her data for this research
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Relationship between seminal vesicle volume measured on MRI and duration of sexual abstinence
Time frame: Day 1
This outcome corresponds to the Correlation coefficient between seminal vesicle volume measured on 3 Tesla prostate MRI and duration of sexual abstinence.
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 13 Sep 2023.
- Background: PubMed 26231470Barrett T, Turkbey B, Choyke PL. PI-RADS version 2: what you need to know. Clin Radiol. 2015 Nov;70(11):1165-76. doi: 10.1016/j.crad.2015.06.093. Epub 2015 Jul 29.
- Background: PubMed 25526901Qi X, Gao XS, Asaumi J, Zhang M, Li HZ, Ma MW, Zhao B, Li FY, Wang D. Optimal contouring of seminal vesicle for definitive radiotherapy of localized prostate cancer: comparison between EORTC prostate cancer radiotherapy guideline, RTOG0815 protocol and actual anatomy. Radiat Oncol. 2014 Dec 20;9:288. doi: 10.1186/s13014-014-0288-1.
- Background: PubMed 25567620Lotti F, Corona G, Vitale P, Maseroli E, Rossi M, Fino MG, Maggi M. Current smoking is associated with lower seminal vesicles and ejaculate volume, despite higher testosterone levels, in male subjects of infertile couples. Hum Reprod. 2015 Mar;30(3):590-602. doi: 10.1093/humrep/deu347. Epub 2015 Jan 6.
- Background: PubMed 23970454Lotti F, Corona G, Maseroli E, Rossi M, Silverii A, Degl'innocenti S, Rastrelli G, Forti G, Maggi M. Clinical implications of measuring prolactin levels in males of infertile couples. Andrology. 2013 Sep;1(5):764-71. doi: 10.1111/j.2047-2927.2013.00114.x.
- Background: PubMed 25744372Bozkurt O, Demir O, Sen V, Esen A. Silodosin causes impaired ejaculation and enlargement of seminal vesicles in sexually active men treated for lower urinary tract symptoms suggestive of benign prostatic hyperplasia. Urology. 2015 May;85(5):1085-1089. doi: 10.1016/j.urology.2015.01.011. Epub 2015 Mar 3.
- Background: PubMed 20235741Joo I, Kim SH, Cho JY. A comparison of seminal vesicle size on CT between autosomal dominant polycystic kidney disease (ADPKD) patients and normal subjects. Acta Radiol. 2010 Jun;51(5):569-72. doi: 10.3109/02841851003652583.
- Background: PubMed 28677052Barrett T, Tanner J, Gill AB, Slough RA, Wason J, Gallagher FA. The longitudinal effect of ejaculation on seminal vesicle fluid volume and whole-prostate ADC as measured on prostate MRI. Eur Radiol. 2017 Dec;27(12):5236-5243. doi: 10.1007/s00330-017-4905-x. Epub 2017 Jul 4.
- Background: PubMed 27660049Yuruk E, Pastuszak AW, Suggs JM 3rd, Colakerol A, Serefoglu EC. The association between seminal vesicle size and duration of abstinence from ejaculation. Andrologia. 2017 Sep;49(7):10.1111/and.12707. doi: 10.1111/and.12707. Epub 2016 Sep 23.
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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.
Constance MICHEL, MD principal investigator
Fondation Hôpital Saint-Joseph
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 Suspected Prostate Cancer, run by Fondation Hôpital Saint-Joseph at 1 site in France.
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 5 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: status not confirmed, as of the sponsor's last update on 13 Sep 2023. 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 France. 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?
Results are not available in the source record.
How can a doctor refer a patient or contact the research team?
Contact Constance MICHEL, MD (144127818 ext. +33, cmichel@ghpsj.fr), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Relationship between seminal vesicle volume measured on MRI and duration of sexual abstinence (time frame: Day 1). 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 NCT05192252, which also lists 8 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 13 Sep 2023; AzTrials last refreshed its copy on 7 Nov 2026.