Renal StoneECIRSNCT06085794
Standard PCNL Vs Endoscopic Combined Intrarenal Surgery (ECIRS) for Complex Nephrolithiasis in Obese Patients
A study testing Endoscopic combined intrarenal surgery and Percutaneous nephrolithotomy in people with Renal Stone, run by Ain Shams University at 1 site in Egypt.
Trial summary
Primary aim: comparing the efficacy of standard PCNL and endoscopic combined intrarenal surgery (ECIRS) in the Galdakao-modified Supine Valdivia (GMSV) position in a single session for the treatment of complex nephrolithiasis in obese patients. Read more about this study
- Who is it for?
- Ages 18 to 60 yearsHealthy volunteers can take part
- Conditions the study is for
- Renal Stone
- What is being tested?
- Endoscopic combined intrarenal surgery and Percutaneous nephrolithotomy
- Type of treatment
- Surgery or procedure
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 100 participants
- Where
- 1 siteEgypt
- Study dates
- 25 Jul 2022to Jan 2024
- Phase
- Interventional
- 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 to 60 years
- All sexes
- Healthy volunteers accepted
- Adult
Who may be able to join
- Partial or complete staghorn stones)
- Guy's Stone Score III or IV)
- Adult (18-60) years old patients
- Obese \& super-obese patients (BMI > 30 kg/m 2).
Who cannot join
- Patients with congenital renal anomalies
Trial locations and contacts
1 site in 1 country.
Egypt1 site, 1 recruiting
- Recruiting
Ain Shams University Hospitals
Cairo, 11361
Ahmed
About this study
Official title: Comparative Study Between Standard PCNL and Endoscopic Combined Intrarenal Surgery (ECIRS) in the Galdakaomodified Supine Valdivia (GMSV) Position for Complex Nephrolithiasis in Obese Patients
Primary aim: comparing the efficacy of standard PCNL and endoscopic combined intrarenal surgery (ECIRS) in the Galdakao-modified Supine Valdivia (GMSV) position in a single session for the treatment of complex nephrolithiasis in obese patients.
Secondary aim: comparing safety and complications of standard PCNL and ECIRS in the GMSV.
Read the detailed description
Complex nephrolithiasis including multiple peripheral or branched (partial or complete staghorn calculi) renal stones, is still currently an intractable problem for urologists to achieve stone-free status and minimize complication rates. According to the European Association of Urology Urolithiasis Guidelines, retrograde intrarenal surgery (RIRS) is recommended as first-line treatment for renal stones < 2 cm, and percutaneous nephrolithotomy (PCNL) is recommended as the gold standard for renal stones ≥ 2 cm in length.
Obesity has been identified as an independent risk factor for stone formation in the United States. Obesity (BMI >35) also places surgical patients at a greater risk of complications, because of the increased incidence in this group of diabetes, hypertension, ischemic heart disease, postoperative deep venous thrombosis, and pulmonary embolism, and because of poor radiographic visualization, obscure anatomic landmarks, more difficult renal access, and inferior stone-free rates.
Standard percutaneous nephrolithotomy (PCNL) is the recommended treatment by major guidelines. However, multiple tracts or sessions of PCNL were required to obtain a high stone-free rate (SFR) for complex renal calculi, especially staghorn stones, while procedure-related complications increased concomitantly. To acquire a higher SFR, full access to the entire intrarenal collecting system is the final goal of treatment for these patients suffering from multiple calyceal or peripheral satellite calculi, which is technically challenging by means of RIRS or PCNL monotherapy.
- Conditions
- Renal Stone
- Being tested
- Endoscopic combined intrarenal surgery, Percutaneous nephrolithotomy
- Keywords
- ECIRS, PCNL, Obese
- Medical subject headings
- Nephrolithiasis, Obesity
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Endoscopic combined intrarenal surgeryProcedure or surgery
Also called ECIRS
Combined complex stone clearance with mini-nephroscope and flexible URS
Percutaneous nephrolithotomyProcedure or surgery
Also called PCNL
Clearance of renal stone with nephroscope in prone position
| Study group | Role | What they receive |
|---|---|---|
| Percutaneous nephrolithotomy | Active comparator | the standard-PCNL group (will be performed by urologists with more than 2 years of experience of PCNL), Fluoroscopic-guided percutaneous renal access will be done for patients in the prone position. Receives: Procedure: Percutaneous nephrolithotomy |
| Endoscopic combined intrarenal surgery | Active comparator | the ECIRS group (will be performed by urologists with more than 2 years of experience of PCNL and RIRS), patients will be oriented in the GMSV position.flexible ureteroscope will be inserted through the access sheath to observe the stone distributions. Under the guidance of fluoroscopy and endoscopic vision, a 18-20 Fr percutaneous tract will be established using sequential fascial dilators and a matching sheath for stone manipulation simultaneously. We use a 12-F nephroscope (Karl Storz). Receives: Procedure: Endoscopic combined intrarenal surgery |
What is being measured
The primary outcome is the main question the study is designed to answer.
Efficacy of PCNL vs ECIRS
Operative duration in minutes (from positioning to the end of the procedure) will be recorded for the two groups Stone-free status will be evaluated with a plain abdominal radiograph of the kidneys, ureters, and bladder (KUB) for radiopaque stones and NCCT for lucent stones before hospital discharge. Stone-free status is defined as no or small calyceal residuals of ≤ 4 mm (clinically insignificant residual fragment) without infection.
Measured: 2 days
Secondary outcomes (1)
Safety and complication of PCNL Vs ECIRS
Intraoperative complications will be recorded and 30-day postoperative complications will be graded according to the modified Clavien classification.
Measured: 1 month.
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted17 Oct 2023
- Study start25 Jul 2022
- Primary completionJan 2024 (estimated)
- Study completionJan 2024 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (6)Papers the sponsor has linked to this study.
- Other trials for Renal StoneStudies of the same condition, open and under way.
- More trials run by Ain Shams UniversityThe 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
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind
- Who is masked
- Participant
- Enrolment
- 100 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Ain Shams University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Moataz bellah Mohamed, Ain Shams University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06085794
- Sponsor's protocol ID
- ECIRS complex stones in obese
- Acronym
- ECIRS
- Status last verified
- Oct 2023
- First submitted
- 13 Sep 2023
- Last updated
- 17 Oct 2023
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- No
Publications
Liu YH, Jhou HJ, Chou MH, Wu ST, Cha TL, Yu DS, Sun GH, Chen PH, Meng E. Endoscopic Combined Intrarenal Surgery Versus Percutaneous Nephrolithotomy for Complex Renal Stones: A Systematic Review and Meta-Analysis. J Pers Med. 2022 Mar 28;12(4):532. doi: 10.3390/jpm12040532.
PubMed 35455648Cracco CM, Scoffone CM. ECIRS (Endoscopic Combined Intrarenal Surgery) in the Galdakao-modified supine Valdivia position: a new life for percutaneous surgery? World J Urol. 2011 Dec;29(6):821-7. doi: 10.1007/s00345-011-0790-0. Epub 2011 Nov 6.
PubMed 22057344Cracco CM, Scoffone CM. Endoscopic combined intrarenal surgery (ECIRS) - Tips and tricks to improve outcomes: A systematic review. Turk J Urol. 2020 Nov;46(Supp. 1):S46-S57. doi: 10.5152/tud.2020.20282. Epub 2020 Aug 25.
PubMed 32877638Grosso AA, Sessa F, Campi R, Viola L, Polverino P, Crisci A, Salvi M, Liatsikos E, Feu OA, DI Maida F, Tellini R, Traxer O, Cocci A, Mari A, Fiori C, Porpiglia F, Carini M, Tuccio A, Minervini A. Intraoperative and postoperative surgical complications after ureteroscopy, retrograde intrarenal surgery, and percutaneous nephrolithotomy: a systematic review. Minerva Urol Nephrol. 2021 Jun;73(3):309-332. doi: 10.23736/S2724-6051.21.04294-4. Epub 2021 Apr 22.
PubMed 33887891Knoll T, Daels F, Desai J, Hoznek A, Knudsen B, Montanari E, Scoffone C, Skolarikos A, Tozawa K. Percutaneous nephrolithotomy: technique. World J Urol. 2017 Sep;35(9):1361-1368. doi: 10.1007/s00345-017-2001-0. Epub 2017 Jan 25.
PubMed 28124111Tawfeek AM, Higazy A, Elkenany MM, Taema K, Arafa H. Mini-Endoscopic Combined Intrarenal Surgery vs Percutaneous Nephrolithotomy in the Management of Complex Nephrolithiasis: A Randomized Controlled Trial. J Endourol. 2025 Oct;39(10):998-1004. doi: 10.1177/08927790251360265. Epub 2025 Jul 18.
PubMed 40681329
Study at a glance
From the registry record, last updated by the sponsor on 17 Oct 2023. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Comparative Study Between Standard PCNL and Endoscopic Combined Intrarenal Surgery (ECIRS) in the Galdakaomodified Supine Valdivia (GMSV) Position for Complex Nephrolithiasis in Obese Patients
- ClinicalTrials.gov ID
- NCT06085794
- Acronym / sponsor ID
- ECIRS / ECIRS complex stones in obese
- Conditions
- Renal Stone
- Keywords
- ECIRS, PCNL, Obese
- Study type
- Interventional
- Recruitment status
- Unknown status
- Enrolment
- 100 participants (estimated)
- Lead sponsor
- Ain Shams UniversityUniversity, hospital or other
- Study start
- 25 Jul 2022 (actual)
- Primary completion
- Jan 2024 (estimated)
- Study completion
- Jan 2024 (estimated)
- First posted
- 17 Oct 2023 (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.
Primary aim: comparing the efficacy of standard PCNL and endoscopic combined intrarenal surgery (ECIRS) in the Galdakao-modified Supine Valdivia (GMSV) position in a single session for the treatment of complex nephrolithiasis in obese patients.
Secondary aim: comparing safety and complications of standard PCNL and ECIRS in the GMSV.
Detailed description
Complex nephrolithiasis including multiple peripheral or branched (partial or complete staghorn calculi) renal stones, is still currently an intractable problem for urologists to achieve stone-free status and minimize complication rates. According to the European Association of Urology Urolithiasis Guidelines, retrograde intrarenal surgery (RIRS) is recommended as first-line treatment for renal stones < 2 cm, and percutaneous nephrolithotomy (PCNL) is recommended as the gold standard for renal stones ≥ 2 cm in length.
Obesity has been identified as an independent risk factor for stone formation in the United States. Obesity (BMI >35) also places surgical patients at a greater risk of complications, because of the increased incidence in this group of diabetes, hypertension, ischemic heart disease, postoperative deep venous thrombosis, and pulmonary embolism, and because of poor radiographic visualization, obscure anatomic landmarks, more difficult renal access, and inferior stone-free rates.
Standard percutaneous nephrolithotomy (PCNL) is the recommended treatment by major guidelines. However, multiple tracts or sessions of PCNL were required to obtain a high stone-free rate (SFR) for complex renal calculi, especially staghorn stones, while procedure-related complications increased concomitantly. To acquire a higher SFR, full access to the entire intrarenal collecting system is the final goal of treatment for these patients suffering from multiple calyceal or peripheral satellite calculi, which is technically challenging by means of RIRS or PCNL monotherapy.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind (participant)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Percutaneous nephrolithotomy | Active comparator | Procedure: Percutaneous nephrolithotomythe standard-PCNL group (will be performed by urologists with more than 2 years of experience of PCNL), Fluoroscopic-guided percutaneous renal access will be done for patients in the prone position. |
| Endoscopic combined intrarenal surgery | Active comparator | Procedure: Endoscopic combined intrarenal surgerythe ECIRS group (will be performed by urologists with more than 2 years of experience of PCNL and RIRS), patients will be oriented in the GMSV position.flexible ureteroscope will be inserted through the access sheath to observe the stone distributions. Under the guidance of fluoroscopy and endoscopic vision, a 18-20 Fr percutaneous tract will be established using sequential fascial dilators and a matching sheath for stone manipulation simultaneously. We use a 12-F nephroscope (Karl Storz). |
Who may qualify
- Ages
- 18 to 60 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (4 listed)
- Partial or complete staghorn stones)
- Guy's Stone Score III or IV)
- Adult (18-60) years old patients
- Obese \& super-obese patients (BMI > 30 kg/m 2).
Key exclusion criteria (1 listed)
- Patients with congenital renal anomalies
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 |
|---|---|---|
| Endoscopic combined intrarenal surgeryAlso: ECIRSCombined complex stone clearance with mini-nephroscope and flexible URS | Procedure or surgery | Endoscopic combined intrarenal surgery |
| Percutaneous nephrolithotomyAlso: PCNLClearance of renal stone with nephroscope in prone position | Procedure or surgery | Percutaneous nephrolithotomy |
Primary outcome
Efficacy of PCNL vs ECIRS
Time frame: 2 days
Operative duration in minutes (from positioning to the end of the procedure) will be recorded for the two groups Stone-free status will be evaluated with a plain abdominal radiograph of the kidneys, ureters, and bladder (KUB) for radiopaque stones and NCCT for lucent stones before hospital discharge. Stone-free status is defined as no or small calyceal residuals of ≤ 4 mm (clinically insignificant residual fragment) without infection.
1 secondary outcome
Safety and complication of PCNL Vs ECIRS
Time frame: 1 month.
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 17 Oct 2023.
- Background: PubMed 35455648Liu YH, Jhou HJ, Chou MH, Wu ST, Cha TL, Yu DS, Sun GH, Chen PH, Meng E. Endoscopic Combined Intrarenal Surgery Versus Percutaneous Nephrolithotomy for Complex Renal Stones: A Systematic Review and Meta-Analysis. J Pers Med. 2022 Mar 28;12(4):532. doi: 10.3390/jpm12040532.
- Background: PubMed 22057344Cracco CM, Scoffone CM. ECIRS (Endoscopic Combined Intrarenal Surgery) in the Galdakao-modified supine Valdivia position: a new life for percutaneous surgery? World J Urol. 2011 Dec;29(6):821-7. doi: 10.1007/s00345-011-0790-0. Epub 2011 Nov 6.
- Background: PubMed 32877638Cracco CM, Scoffone CM. Endoscopic combined intrarenal surgery (ECIRS) - Tips and tricks to improve outcomes: A systematic review. Turk J Urol. 2020 Nov;46(Supp. 1):S46-S57. doi: 10.5152/tud.2020.20282. Epub 2020 Aug 25.
- Background: PubMed 33887891Grosso AA, Sessa F, Campi R, Viola L, Polverino P, Crisci A, Salvi M, Liatsikos E, Feu OA, DI Maida F, Tellini R, Traxer O, Cocci A, Mari A, Fiori C, Porpiglia F, Carini M, Tuccio A, Minervini A. Intraoperative and postoperative surgical complications after ureteroscopy, retrograde intrarenal surgery, and percutaneous nephrolithotomy: a systematic review. Minerva Urol Nephrol. 2021 Jun;73(3):309-332. doi: 10.23736/S2724-6051.21.04294-4. Epub 2021 Apr 22.
- Background: PubMed 28124111Knoll T, Daels F, Desai J, Hoznek A, Knudsen B, Montanari E, Scoffone C, Skolarikos A, Tozawa K. Percutaneous nephrolithotomy: technique. World J Urol. 2017 Sep;35(9):1361-1368. doi: 10.1007/s00345-017-2001-0. Epub 2017 Jan 25.
- Derived from this study: PubMed 40681329Tawfeek AM, Higazy A, Elkenany MM, Taema K, Arafa H. Mini-Endoscopic Combined Intrarenal Surgery vs Percutaneous Nephrolithotomy in the Management of Complex Nephrolithiasis: A Randomized Controlled Trial. J Endourol. 2025 Oct;39(10):998-1004. doi: 10.1177/08927790251360265. Epub 2025 Jul 18.
Related trials for Renal Stone
RecruitingObservational study
Stone Clearance With Aspiration vs Other Technologies: a Real-world Evidence Study
Urolithiasis, Stones, Kidney
Not yet recruiting
Intertransverse Process Block Versus Erector Spinae Plane Block for Postoperative Analgesia After Percutaneous Nephrolithotomy
Kidney Stones, Urolithiasis, Hypocitraturia, Pain, Postoperative
Not yet recruiting
Comparison of Smart Pressure-Controlled Flexible Ureteroscopy and Flexible Suction Ureteral Access Sheath-Assisted Flexible Ureteroscopy for 2-3 cm Renal Stones
Kidney Stones
Not yet recruitingEarly Phase 1
Phosphate & Kidney Stones
Kidney Stones, Calcium Oxalate Kidney Stones
Recruiting
Trial of Ureteroscopy vs Steerable Continuous Flow Aspiration Technology
Urolithiasis, Stones, Kidney
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.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Endoscopic combined intrarenal surgery and Percutaneous nephrolithotomy in people with Renal Stone, run by Ain Shams University at 1 site in Egypt.
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 4 inclusion and 1 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 17 Oct 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 Egypt. 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 Moataz bellah M. Adel, Master degree (+201065440699 ext. 02, mezzomezzo2@gmail.com), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Efficacy of PCNL vs ECIRS (time frame: 2 days). 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 NCT06085794, which also lists 6 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 17 Oct 2023; AzTrials last refreshed its copy on 5 Nov 2026.