ClinicalTrials.gg
CompletedNCT00696761Updated Feb 17, 2021Results posted

The Long Term Effects of Alfuzosin(Xatral XL) in Lower Urinary Tract Symptoms(LUTS)/BPH Patients

A Phase 4 interventional study of Alfuzosin and Alfuzosin in BPH, sponsored by Asan Medical Center. Completed. Open to male participants aged 50 Years and older. Per ClinicalTrials.gov, last updated 2021-02-17.

Sponsored by Asan Medical Center · Phase 4, Interventional, and Treatment

Phase
Phase 4
Study type
Interventional
Enrollment
232
Allocation
Randomized
Ages
50 Years and older
Sex
Male
01

Study summary

Benign prostatic hyperplasia (BPH) is a common condition among older men. The efficacy of α1-blockers for treating BPH has been well documented and they are recommended for the treatment of BPH by clinical guidelines.

It is not well known if a stratification based on the grade of BOO and bladder contractility has any predictive value for patients who are treated with an α1-selective blocking agent. In our study, we investigated possible differences in treatment outcome between patients with and without BOO, and with or without proper contractility who are treated with alfuzosin. So we will compare the quantified improvements 12 months after alfuzosin medication in LUTS/BPH patients by the grade of BOO and/or bladder contractility.

Read the detailed description
  1. Primary objective To evaluate efficacy on voiding and storage symptoms in LUTS/BPH patients after 12 months of treatment with Xatral XL® by the grade of bladder outlet obstruction and/or bladder contractility
  2. Secondary objectives To evaluate efficacy on voiding and storage symptoms in LUTS/BPH patients after 3 months and 6 months of treatment with Xatral XL® by the grade of bladder outlet obstruction and/or bladder contractility To evaluate efficacy on maximal flow rate (MFR) and post-voided residual urine (PVR) To evaluate on voiding frequency, urgency severity \& frequency, and nocturia To evaluate patient tolerability to the medication To evaluate global impression of improvement (GII)
02

Conditions studied

  • BPH

Keywords

  • LUTS
  • BPH
  • bladder outlet obstruction
  • bladder contractility
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 enrollment of 232 is above the median of 88 across 30 interventional studies indexed under Urinary Bladder Neck Obstruction.

Browse Urinary Bladder Neck Obstruction studies →

Lead sponsor

Asan Medical Center is the lead sponsor of 578 studies on the registry; 73 are open to participants now.

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

04

Who can participate

Ages eligible
50 Years and older
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

  • Ambulatory males (≥50 years) suffering from LUTS suggestive of BPH
  • Patients satisfying all of the following:
  • Moderate to severe LUTS :
  • international prostate symptom score (IPSS)≥ 8
  • An enlarged prostate (≥25 mL)
  • Decreased peak flow rate : Qmax ≤15 mL/s (volume voided ≥ 120 mL)

Exclusion criteria

Exclusion Criteria:

  • Post voided residual urine ≥ 200 mL
  • Patients performing catheterization
  • Urinary tract infection patients
  • Patients taking 5 alpha reductase inhibitor
  • Known to alfuzosin
  • History of postural hypotension or syncope
  • Hypertension patients treated with other alpha1-blockers
  • Patients newly taking anticholinergic medication within 1 month
  • Hepatic insufficiency ( /alanine aminotransferase ≥ 2 times of normal range)
  • Renal insufficiency (s-Cr ≥ 2mg/dL)
  • Unstable angina pectoris
  • Uninvestigated hematuria
  • Serum Prostate specific antigen ≥ 4 ng/mL ( proven no cancer patients can be included)
  • Interstitial cystitis patients
  • Severe concomitant condition threatening life.
  • Patient who is unable to make voiding diary
  • Bladder or prostate cancer patients
  • Patients receiving prostate or bladder surgery
Terms in these criteria, in plain language(3)

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.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

ALT and AST (liver enzymes)

Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.

Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.

Biopsy and archival tissue

A biopsy takes a small piece of tissue to examine. “Archival tissue” is a sample already taken, for example at diagnosis, and kept by the hospital.

Whether a stored sample will do depends on when it was taken, how much there is and what the study needs. Ask whether the study accepts your stored sample or needs a new biopsy.

05

Study design

Phase
Phase 4
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
232 participants (actual)

Study arms

  • Active comparator
    group1

    Bladder outlet obstruction index(BOOI)≥ 20, Bladder contractility index(BCI)≥ 100 Alfuzosin was administered daily (10 mg) for 12 month.

    Drug: Alfuzosin

  • Active comparator
    group2

    BOOI≥ 20, BCI\<100 Alfuzosin was administered daily (10 mg) for 12 month.

    Drug: Alfuzosin

  • Active comparator
    group 3

    BOOI\<20, BCI≥ 100 Alfuzosin was administered daily (10 mg) for 12 month.

    Drug: Alfuzosin

  • Active comparator
    group 4

    BOOI\<20, BCI\<100 Alfuzosin was administered daily (10 mg) for 12 month.

    Drug: Alfuzosin

Interventions

  • 10mg, once daily, 12months

    Also known as: xatral

  • 10mg, once daily, 12months

    Also known as: xatral

  • 10mg, once daily, 12months

    Also known as: xatral

  • 10mg, once daily, 12months

    Also known as: xatral

06

What researchers measure

Primary outcomes

  1. Primary Outcome; International Prostate Symptom Score Changes Between 4 Groups Compared to Baseline After 12 mo Treatment

    international prostate symptom score was measured at baseline and 12 months. total scores on a scale range (from 0 to 35) higher values represent a worse outcome Baseline score minus 12-month score

    Time frame: 12months

  2. Treatment Efficacy Was Analyzed by Validated Symptom Scores.

    Alfuzosin was administered daily (10 mg). After 12 months of treatment, efficacy and safety were analyzed. Efficacy was measured by validated symptom scores (using IPSS ). IPSS score change was measured pre- and post- treatment.

    Time frame: 12 month

Secondary outcomes

  1. Changes of International Continence Society (ICS)-Male Questionnaire (Voiding Sum)

    Changes of International Continence Society (ICS)-male questionnaire (voiding sum) to measure the efficacy of alfuzosin 10mg at 12 months post-treatment. Range 0-20, higher scores represent worse outcomes.

    Time frame: 12months

  2. Changes of Peak Flow Rates on Uroflowmetry

    Changes of peak flow rates on uroflowmetry to measure the efficacy of alfuzosin 10mg at 12 months post-treatment.

    Time frame: 12 months

  3. Changes in Residual Urine Volumes

    Changes in residual urine volumes to measure the efficacy of alfuzosin 10mg at 12 months post-treatment.

    Time frame: 12 months

07

Results

Posted Mar 4, 2014
Limitations and caveats
Patients were not divided into three groups according to the ICS nomogram (obstructed \[BOOI \<40\], equivocally obstructed (20 \<BOOI \<40), and unobstructed \[BOOI \<20\]).

Participant flow

Participants recruited from a specialty clinic at the Asan Medical Center, Samsung Medical Center,The Catholic University of Korea College of Medicine, Hallym University, Chuncheon, Korea for 12-month

Participant flow — Overall Study
MilestoneBOOI≥20, BCI≥ 100BOOI≥20, BCI< 100BOOI<20, BCI≥ 100BOOI<20, BCI< 100
Started61764154
Completed41503044
Not completed20261110

Outcome measures

PrimaryPrimary Outcome; International Prostate Symptom Score Changes Between 4 Groups Compared to Baseline After 12 mo Treatment

international prostate symptom score was measured at baseline and 12 months. total scores on a scale range (from 0 to 35) higher values represent a worse outcome Baseline score minus 12-month score

Time frame:
12months
Reported as:
Mean · score
Primary Outcome; International Prostate Symptom Score Changes Between 4 Groups Compared to Baseline After 12 mo Treatment
scoreBOOI≥ 20, BCI≥100BOOI≥ 20, BCI<100BOOI<20, BCI≥ 100BOOI<20, BCI<100
Primary Outcome; International Prostate Symptom Score Changes Between 4 Groups Compared to Baseline After 12 mo Treatment13.0 ± 6.612.0 ± 5.410.6 ± 6.113.4 ± 6.3
Statistical analysis
  • BOOI≥ 20, BCI≥100 vs BOOI≥ 20, BCI<100 vs BOOI<20, BCI≥ 100 vs BOOI<20, BCI<100 · Kruskal-Wallis · p = <0.05
PrimaryTreatment Efficacy Was Analyzed by Validated Symptom Scores.

Alfuzosin was administered daily (10 mg). After 12 months of treatment, efficacy and safety were analyzed. Efficacy was measured by validated symptom scores (using IPSS ). IPSS score change was measured pre- and post- treatment.

Time frame:
12 month
Reported as:
Mean · score
Treatment Efficacy Was Analyzed by Validated Symptom Scores.
scoreGroup 3Group 4group1group2
Treatment Efficacy Was Analyzed by Validated Symptom Scores.8.3 ± 6.26.4 ± 6.26.4 ± 6.59.0 ± 6.1
Statistical analysis
  • Group 3 vs Group 4 vs group1 vs group2 · Kruskal-Wallis · p = <0.05
SecondaryChanges of International Continence Society (ICS)-Male Questionnaire (Voiding Sum)

Changes of International Continence Society (ICS)-male questionnaire (voiding sum) to measure the efficacy of alfuzosin 10mg at 12 months post-treatment. Range 0-20, higher scores represent worse outcomes.

Time frame:
12months
Reported as:
Mean · score on a scale
Changes of International Continence Society (ICS)-Male Questionnaire (Voiding Sum)
score on a scalegroup1group2Group 3Group 4
Changes of International Continence Society (ICS)-Male Questionnaire (Voiding Sum)8.2 ± 4.37.2 ± 3.49.7 ± 6.48.2 ± 4.1
SecondaryChanges of Peak Flow Rates on Uroflowmetry

Changes of peak flow rates on uroflowmetry to measure the efficacy of alfuzosin 10mg at 12 months post-treatment.

Time frame:
12 months
Reported as:
Mean · ml/s
Changes of Peak Flow Rates on Uroflowmetry
ml/sgroup1group2Group 3Group 4
Changes of Peak Flow Rates on Uroflowmetry14.3 ± 7.210.9 ± 6.416.8 ± 8.713.0 ± 5.3
SecondaryChanges in Residual Urine Volumes

Changes in residual urine volumes to measure the efficacy of alfuzosin 10mg at 12 months post-treatment.

Time frame:
12 months
Reported as:
Mean · ml
Changes in Residual Urine Volumes
mlgroup1group2Group 3Group 4
Changes in Residual Urine Volumes51.6 ± 8737 ± 45.229.3 ± 35.931.7 ± 35.3

Adverse events

Non-serious events are listed at a 3.9% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Group 3—0/41 (0%)2/41 (4.9%)
Group 4—0/54 (0%)2/54 (3.7%)
group1—0/61 (0%)2/61 (3.3%)
group2—0/76 (0%)3/76 (3.9%)
Most frequent other events
Most frequent other events
EventGroup 3Group 4group1group2
dizzinessVascular disorders2/412/542/613/76

Baseline characteristics

Age, Categorical
Age, Categorical(Participants)Group 3Group 4group1group2Total
<=18 years00000
Between 18 and 65 years1010101040
>=65 years31445166192
Age, Continuous
Age, Continuous(years)Group 3Group 4group1group2Total
Mean67.0 ± 2.067.4 ± 066.0 ± 1.263.1 ± 565.7 ± 7.3
Sex: Female, Male
Sex: Female, Male(Participants)Group 3Group 4group1group2Total
Female00000
Male41546176232
Region of Enrollment
Region of Enrollment(participants)Group 3Group 4group1group2Total
Korea, Republic of41546176232
international prostate symptom score
international prostate symptom score(scores)Group 3Group 4group1group2Total
Mean18.9 ± 7.618.8 ± 6.819.4 ± 6.921.0 ± 6.519.5 ± 6.95
08

Study locations

No study locations are listed for this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Feb 17, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT00696761
Responsible party
Myung-Soo Choo (urology department, Asan Medical Center) — Principal investigator
First posted
Jun 13, 2008
Start date
May 2006
Primary completion
Jul 2008
Completion
Aug 2008
Results posted
Mar 4, 2014
Last update
Feb 17, 2021

Study contacts

Myung-Soo Choo, M.D., PhD
principal investigator · From the Department of Urology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea

Oversight

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

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