ClinicalTrials.gg
Status unknownNCT02869061Updated Aug 16, 2016

Effectiveness and Safety of Adipose-derived Regenerative Cells for Reduction of Risk of Bladder Neck Contracture

A Phase 1/2 interventional study of Liposuction and Transurethral bladder neck resection. in Bladder Neck Obstruction, Bladder Outlet Obstruction and Benign Prostatic Hyperplasia, sponsored by Central Clinical Hospital w/Outpatient Health Center of Business Administration for the President of Russian Federation. Status unknown at 2 sites in Russian Federation. Open to male participants aged 40 Years to 70 Years. Per ClinicalTrials.gov, last updated 2016-08-16.

Sponsored by Central Clinical Hospital w/Outpatient Health Center of Business Administration for the President of Russian Federation · Phase 1/2, Interventional, and Prevention

The sponsor has not verified this record recently (last verified Aug 2016), so the status shown — last known as Enrolling by invitation — may be out of date.
Phase
Phase 1/2
Study type
Interventional
Enrollment
12
Allocation
Not applicable
Ages
40 Years to 70 Years
Sex
Male
01

Study summary

Autologous adipose-derived regenerative cells (ADRC) will be extracted from lipoaspirate by enzymatic digestion from a portion of the fat harvested from the patient's front abdominal wall. Transurethral bladder neck resection followed by the injection of ADRCs suspension will be performed. This is a single arm study with no control. All patients receive cell therapy.

Read the detailed description

Fat tissue obtainment:

Subjects will undergo liposuction under local anesthesia. In this procedure, Ringer's solution with the anesthetic lidocaine and vasoconstrictor adrenaline infused into the adipose compartment to minimize blood loss and contamination of the tissue by peripheral blood cells. 15 minutes later a hollow blunt-tipped 3 mm cannula introduced into the subcutaneous space through small (0.5 cm) incision. The cannula attached to syringe and under gentle suction moved through the adipose compartment, mechanically disrupting the fat tissue. Aspirate volume - approximately 150-200 cc. Procedure time - 30 minutes.

ADRC isolation:

Harvested adipose tissue will be processed according to patent pending technology based on enzymatic digestion, washing and concentration of cell pellet in 9.5 ml of normal saline.Obtained ADRC divided into 2 portions. First portion (0.5 mL) used for counting, viability and sterility assessment. The second portion (9 ml) placed into sterile syringe for injection.

Surgery:

Transurethral endoscopic loop resection of bladder neck will be performed.

Autologous ADRC administration:

Injection of ADRC suspension will be performed immediately after bladder neck resection. 9 to 18 injections (0.5 to 1.0 mL each) will be injected with endoscopic needle into the bladder neck close to the site of resection. All injections will be performed during single procedure.

02

Conditions studied

  • Bladder Neck Obstruction
  • Bladder Outlet Obstruction
  • Benign Prostatic Hyperplasia
  • Urinary Bladder Neck Obstruction

Keywords

  • Bladder neck obstruction
  • Bladder outlet obstruction
  • Benign prostatic hyperplasia
  • Urinary bladder neck obstruction
  • Bladder neck contracture
  • Bladder neck stricture
  • Bladder neck stenosis
  • Transurethral resection of the prostate
  • Prostatectomy
  • Stromal vascular fraction (SVF)
  • Adipose-derived regenerative cells (ADRC)
  • Adipose tissue
  • Stem cells
03

In context

Urinary Bladder Neck Obstruction

46 studies on the registry are indexed under Urinary Bladder Neck Obstruction; 10 are open to participants now.

This study's planned enrollment of 12 is below the median of 88 across 30 interventional studies indexed under Urinary Bladder Neck Obstruction.

Browse Urinary Bladder Neck Obstruction studies →

Lead sponsor

Central Clinical Hospital w/Outpatient Health Center of Business Administration for the President of Russian Federation is the lead sponsor of 9 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
40 Years to 70 Years
Sexes eligible
Male
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Bladder neck contracture after transurethral prostate resection.
  • Obstructive pattern of urine flow rate with maximum flow rate below 15 mL/s
  • Patient is familiar with Participant information sheet
  • Patient signed form

Non-inclusion Criteria:

  • for spinal, epidural or inhalation anesthesia
  • Urethral strictures
  • Genitourinary inflammatory diseases
  • Prostate-specific antigen (PSA) level above 4 ng/mL
  • Contraindications for local anesthesia or history of allergy for local anesthetics
  • Systemic and/or therapy
  • Any condition that might limit compliance (dementia, mental disorders, narcotic drug or alcohol abuse etc.)
  • Participation in other clinical trials (or administration of drugs) during 3 months prior inclusion
  • Patients with malignant tumors including postoperative period, patients receiving chemotherapy and/or radiotherapy
  • abnormalities in results of laboratory tests
  • Patient received anticoagulants at least 12 hours prior the liposuction
  • Medical history of heterotopic ossifications
  • Patients prescribed for glycoprotein inhibitors treatment

Exclusion criteria

Exclusion Criteria:

  • Patient's refusal from the further participation in trial
  • Chronic kidney disease IV- V stages ( \< 30 mL/min estimated by Cockcroft-Gault formula)
  • Confirmed syphilis, , or C infections
Terms in these criteria, in plain language(9)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

Immunosuppression

A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.

Read whether the line is about a condition or about medicines, and which medicines and doses it means.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

Creatinine clearance (CrCl)

How quickly the kidneys clear creatinine, a waste product, from the blood. A study may estimate it from a blood test with age, weight and sex (often by the Cockcroft–Gault formula), or measure it using blood and urine collected over a set time. Given in mL/min; higher is better.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

Hepatitis B tests

Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.

Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.

05

Study design

Phase
Phase 1 / Phase 2
Primary purpose
Prevention
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
12 participants (estimated)

Study arms

  • Experimental
    ADRC injection

    Subjects will be undergone liposuction under local anesthesia. Adipose-derived regenerative cells (ADRC) will be isolated from lipoaspirate by enzymatic digestion. Transurethral bladder neck resection followed by the injection of ADRC suspension will be performed. This is a single arm study with no control. All patients receive cell therapy.

    Procedure: Liposuction · Procedure: Transurethral bladder neck resection. · Biological: ADRC · Other: ADRC isolation

Interventions

  • ProcedureLiposuction
  • ProcedureTransurethral bladder neck resection.
  • BiologicalADRC

    Injection of ADRC suspension will be performed endoscopically into the bladder neck close to the site of resection.

    Also known as: Adipose-derived regenerative cells

  • OtherADRC isolation

    ADRC will be isolated according to patent pending technology based on enzymatic digestion, washing and concentration of cell pellet in up to 9.5 ml of normal saline.

06

What researchers measure

Primary outcomes

  1. Serious adverse events

    Frequency, type and severity of serious adverse events (SAE)

    Time frame: 4 weeks after injection of ADRC suspension

  2. Serious adverse reactions

    Frequency, type and severity of serious adverse reactions (SAR)

    Time frame: Time Frame: 4 weeks after injection of ADRC suspension

Secondary outcomes

  1. Changes of the volume of residual urine

    Influence of the procedure on the volume of residual urine assessed by ultrasonography

    Time frame: Follow up to completion (48 weeks after intervention)

  2. Urodynamic changes - 1

    Influence of the intervention on urinary flow rate: maximum flow rate

    Time frame: Follow up to completion (48 weeks after intervention)

  3. Urodynamic changes - 2

    Influence of the intervention on urinary flow rate: average flow rate

    Time frame: Follow up to completion (48 weeks after intervention)

  4. Urodynamic changes - 3

    Influence of the intervention on urinary flow rate: total volume voided

    Time frame: Follow up to completion (48 weeks after intervention)

  5. Urodynamic changes - 4

    Influence of the intervention on urinary flow rate: maximum flow time

    Time frame: Follow up to completion (48 weeks after intervention)

  6. Quality of life monitoring - 1

    Quality of life estimated by validated questionnaire: the Short Form (SF-36).

    Time frame: Follow up to completion (48 weeks after intervention)

  7. Quality of life monitoring - 2

    Quality of life estimated by validated questionnaire: International Prostatic Symptom Score (IPSS).

    Time frame: Follow up to completion (48 weeks after intervention)

  8. Bladder neck restenosis control

    Revision of bladder neck structure by retrograde urethrography

    Time frame: Follow up to completion (48 weeks after intervention)

07

Study locations

2 sites
  • I.M. Sechenov First Moscow State Medical University
    Moscow, 119991, Russian Federation
  • Federal State Budgetary Institution "Central Clinical Hospital with Outpatient Health Center" of the Business Administration for the President of the Russian Federation
    Moscow, 121359, Russian Federation
08

References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
Not marked actual or estimatedDates not marked actual or estimated

The record gives a start of Jan 2016, a primary completion of Dec 2017 and a completion of Dec 2018. It does not say whether these dates are actual or estimated.

How these figures are worked out, and which studies are left out of them.

Registered
Aug 8, 2016
First posted
Aug 16, 2016
Start
Jan 2016
Primary completionEst.
Dec 2017
CompletionEst.
Dec 2018
Last update
Aug 16, 2016
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Aug 16, 2016, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT02869061
Lead sponsor
Central Clinical Hospital w/Outpatient Health Center of Business Administration for the President of Russian Federation
Responsible party
Sponsor
First posted
Aug 16, 2016
Start date
Jan 2016
Primary completion
Dec 2017 (estimated)
Completion
Dec 2018 (estimated)
Last update
Aug 16, 2016

Study contacts

Denis V Butnaru, MD, PhD
principal investigator · I.M. Sechenov First Moscow State Medical University
Andrey A Pulin, MD, PhD
principal investigator · Federal State Budgetary Institution "Central Clinical Hospital with Outpatient Health Center" of the Business Administration for the President of the Russian Federation
Andrey Z Vinarov, MD, PhD, Prof
principal investigator · I.M. Sechenov First Moscow State Medical University

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is status unknown, as verified in Aug 2016. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Studies of the drug tested here: Adipose-Derived Regenerative Cells

Start the discussion