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RecruitingNCT05455307AlliumUpdated Jul 13, 2022

Efficacy and Safety of Allium Ureteral Stent for Treating Refractory Ureteral Stricture

An interventional study of Allium ureteral stent in Ureteral Stenosis, Hydronephrosis and Ureteral Stent Occlusion, sponsored by En Chu Kong Hospital. Recruiting at 1 site in Taiwan. Open to participants aged 18 Years to 80 Years. Per ClinicalTrials.gov, last updated 2022-07-13.

Sponsored by En Chu Kong Hospital · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Primary completion was expected by Jul 2024, 2 years 3 months ago, but the record still lists the study as recruiting.
Phase
Not applicable
Study type
Interventional
Enrollment
200
Allocation
Not applicable
Ages
18 Years to 80 Years
Sex
All
01

Study summary

To conduct a prospective, multi-center study to observe the long-term efficacy and safety of self expanding ureteral stent for treating participants with refractory ureteral stricture.

Read the detailed description

The aim of the study is to conduct a prospective, multi-center study to observe the long-term efficacy and safety of self expanding ureteral stent for treating participants with refractory ureteral stricture.

About 200 participants with refractory ureteral stricture will be enrolled in four hospitals. After the allium ureteral stents are placed, renal function, renal echo, images and associated complications will be recorded.

02

Conditions studied

  • Ureteral Stenosis
  • Hydronephrosis
  • Ureteral Stent Occlusion

Keywords

  • ureteral stone
  • ureteral stricture
  • hydronephrosis
03

In context

Hydronephrosis

55 studies on the registry are indexed under Hydronephrosis; 9 are open to participants now.

This study's planned enrollment of 200 is above the median of 100 across 23 interventional studies indexed under Hydronephrosis.

Browse Hydronephrosis studies →

Lead sponsor

En Chu Kong Hospital is the lead sponsor of 10 studies on the registry; 4 are open to participants now.

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

04

Who can participate

Ages eligible
18 Years to 80 Years
Sexes eligible
All
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

  • ureteral stricture after at least two times of ureteral dilation

Exclusion criteria

Exclusion Criteria:

  • poor cardiovascular function for anesthesia unwilling to accept the long-term placement of ureteral stent uncontrolled urinary tract infection
Terms in these criteria, in plain language(1)

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.

Relapsed and refractory

Relapsed: the illness came back after treatment had worked. Refractory: it did not respond to treatment, or stopped responding while still on it.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
200 participants (estimated)

Study arms

  • Experimental
    single arm

    single arm without placebo control

    Device: Allium ureteral stent

Interventions

  • DeviceAllium ureteral stent

    observe the effficacy and safety of long-term self expanding ureteral stents for treating refractory ureteral stricture

06

What researchers measure

Primary outcomes

  1. Renal function test

    serum creatinine (mg/dL)

    Time frame: 6 months, 12 months, 18 months, 24 months, 30 months, 36 months, 42 months, 48 months, 54 months and 60 months

Secondary outcomes

  1. Complications

    device associated complications (e.g. urinary tract infection, stone formation, hematuria, stent migration)

    Time frame: 6 months, 12 months, 18 months, 24 months, 30 months, 36 months, 42 months, 48 months, 54 months and 60 months

  2. Renal structure

    Renal echo (e.g. no hydronephrosis, mild hydronephrosis, moderate hydronephrosis, orsevere hydronephrosis)

    Time frame: 6 months, 12 months, 18 months, 24 months, 30 months, 36 months, 42 months, 48 months, 54 months and 60 months

07

Study locations

1 of 1 sites recruiting
08

References and documents

Publications

  • Avitan O, Bahouth Z, Shprits S, Gorenberg M, Halachmi S. Allium Ureteral Stent as a Treatment for Ureteral Stricture: Results and Concerns. Urol Int. 2022;106(5):482-486. doi: 10.1159/000522174. Epub 2022 Mar 1. PubMed 35231922 ↗
  • Sampogna G, Grasso A, Montanari E. Expandable metallic ureteral stent: indications and results. Minerva Urol Nefrol. 2018 Jun;70(3):275-285. doi: 10.23736/S0393-2249.18.03035-7. Epub 2018 Mar 28. PubMed 29595037 ↗

Individual participant data

Plan to share: No — Other researchers can e-mail to us for data sharing

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jul 13, 2022, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05455307
Lead sponsor
En Chu Kong Hospital
Responsible party
ChungChengWang (Chief of department of Urology, En Chu Kong Hospital) — Principal investigator
First posted
Jul 13, 2022
Start date
Jul 30, 2022 (estimated)
Primary completion
Jul 30, 2024 (estimated)
Completion
Jul 30, 2027 (estimated)
Last update
Jul 13, 2022

Study contacts

Chung Cheng Wang, MD PhD
Contact
ericwcc@ms27.hinet.net
886-26723456 ext. 6620
Hsin-Yi Lin, BS
Contact
hhan309@gmail.com
886-26723456 ext. 6621
Chung Cheng Wang, MD PhD
principal investigator · En Chu Kong Hospital

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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