Kidney StonesNCT06721975
Thulium Fiber Laser (TFL) vs Thulio Pulsed Thulium:YAG (p-Tm:YAG)
A study testing Thulio pulsed Thulium:YAG (p-Tm:YAG) and Thulium Laser Fiber (TFL) in people with Kidney Stones and Nephrolithiasis, run by University of California, San Diego at 1 site in United States.
Trial summary
This research study is being conducted to assess the ability and efficiency of two laser systems to break up kidney stones during ureteroscopy with laser lithotripsy for kidney stone treatment. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Kidney Stones, Nephrolithiasis
- What is being tested?
- Thulio pulsed Thulium:YAG (p-Tm:YAG) and Thulium Laser Fiber (TFL)
- Type of treatment
- Medical device
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 50 participants
- Where
- 1 siteUnited States
- Study dates
- 1 Aug 2024to 31 Dec 2026
- Phase
- Interventional
- Are there results?
- Not yet: the study is under way
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 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Solitary renal stone 7 to 20 mm in size or in the case of multiple stones the conglomerate diameter (additive maximal diameter of all stones on axial imaging of computed tomography) of 7-20 mm is required
- Must be a suitable operative candidate for flexible ureteroscopy per American Urological Association guidelines
- Must be able to give consent
- Bilateral ureteroscopy will be permitted but only the first side (per surgeon discretion) will be included in the study
- Surgeons participating in the study must be urological attending surgeons or fellows with subspecialty training in Endourology
Who cannot join
- Concomitant stones in the ureter
- Prior ipsilateral upper urinary tract reconstructive procedures or history of ipsilateral ureteral stricture
- Prior radiotherapy to the abdomen or pelvis
- Neurogenic bladder or spinal cord injury
- Pregnancy
- Untreated UTI
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
United States1 site, 1 recruiting
- Recruiting
University of California, San Diego
San Diego, California, 92122
Jamie L Finegan, BA, 858-777-9721, jlfinegan@health.ucsd.edu
Roger L Sur, MD, (858) 657-7876, rlsur@health.ucsd.edu
About this study
Official title: Prospective Single-center Study Comparing Thulium Fiber Laser to Pulsed Thulium:YAG Laser in the Ureteroscopic Treatment of Nephrolithiasis
This research study is being conducted to assess the ability and efficiency of two laser systems to break up kidney stones during ureteroscopy with laser lithotripsy for kidney stone treatment.
Read the detailed description
Ureteroscopic stone treatment is a minimally invasive procedure commonly performed for kidney stones. Recently, the thulium fiber laser (TFL) has demonstrated effectiveness in this procedure. A new laser system developed by Dornier, the Thulio pulsed Thulium:YAG (p-Tm:YAG ) is beginning to be studied in vitro and in vivo. Dornier Thulio p-Tm:YAG may represent an attractive new laser platform, with comparable properties to TFL including decreased retropulsion, smaller dust, and improved ablation efficiency relative to Ho:YAG. Moreover, the p-Tm:YAG laser has been shown to be effective in treating a wide range of human stone types. The Dornier Thulio p-Tm:YAG laser has been tested clinically in a limited fashion via pilot studies in URS and the RevoLix Hybrid Thulium Laset (HTL) was studied in mini-PCNL. However, limited research has directly compared its efficacy and safety and no prospective comparative trials have been published.
This study aims to investigate whether Dornier Thulio p-Tm:YAG laser is non-inferior to TFL in terms of dusting ablation efficiency (J/mm3) and dusting ablation speed (mm3/s) for ureteroscopic stone treatment. To our knowledge no large-scale study has examined the outcomes of p-Tm:YAG compared to TFL for the treatment of kidney stones which warrants an investigation giving the promising results previously reported.
The primary objective is to assess stone dusting ablation efficiency (Joules/stone volume ablated) between both laser systems in vivo for ureteroscopic stone treatment . Secondary objectives include assessing stone dusting ablation speed (stone volume ablated/lasing time) and complication profile of both laser systems.
The investigators hypothesize that dusting ablation efficiency and speed of the p-Tm:YAG laser will be non-inferior to TFL for the treatment of renal stones totaling 7-20 mm in diameter with similar clinical and safety/complication outcomes.
- Conditions
- Kidney Stones, Nephrolithiasis
- Being tested
- Thulio pulsed Thulium:YAG (p-Tm:YAG), Thulium Laser Fiber (TFL)
- Keywords
- laser lithotripsy, laser, nephrolithiasis, kidney stone
- Medical subject headings
- Kidney Calculi, Nephrolithiasis
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Thulio pulsed Thulium:YAG (p-Tm:YAG)Device
A new laser system developed by Dornier, the Thulio pulsed Thulium:YAG (p-Tm:YAG ) is beginning to be studied in vitro and in vivo. Dornier Thulio p-Tm:YAG may represent an attractive new laser platform, with comparable properties to TFL including decreased retropulsion, smaller dust, and improved ablation efficiency relative to Ho:YAG.
Thulium Laser Fiber (TFL)Device
The thulium fiber laser (TFL) has demonstrated effectiveness in this procedure
| Study group | Role | What they receive |
|---|---|---|
| p-Tm:YAG laser system | Experimental | This is a new laser system developed by Dornier, the Thulio pulsed Thulium:YAG (p-Tm:YAG) Receives: Device: Thulio pulsed Thulium:YAG (p-Tm:YAG) |
| TFL laser system | Active comparator | The thulium fiber laser (TFL) has demonstrated effectiveness in this procedure. Receives: Device: Thulium Laser Fiber (TFL) |
What is being measured
The primary outcome is the main question the study is designed to answer.
The amount of energy used per given stone volume
The primary object is to assess the stone dusting ablation efficiency - efficiency will be defined by amount of laser energy used per stone volume (Joules/mm3)
Measured: From enrollment to the follow up imaging at 6-12 weeks
Secondary outcomes (2)
Laser ablation speed (volume of stone/lasing time = mm3/sec)
Secondary objectives include assessing stone dusting ablation speed. This is assessed by taking the stone volume ablated (mm3) and dividing it by lasing time (seconds) - mm3/sec.
Measured: From enrollment to the follow up imaging at 6-12 weeks
Post-operative complications compared between the two laser systems
Secondary objectives include assessing post-operative complications. This is defined as the proportion of post-operative infections, readmissions to the hospital, and unplanned procedures compared between the two laser systems.
Measured: From enrollment to the follow up imaging at 6-12 weeks
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted6 Dec 2024
- Study start1 Aug 2024
- Primary completion1 Aug 2026 (estimated)
- Study completion31 Dec 2026 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (28)Papers the sponsor has linked to this study.
- Other trials for Kidney StonesStudies of the same condition, open and under way.
- More trials run by University of California, San DiegoThe 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
- Model description
- Patient will be randomized to one of the following two groups: 1. p-Tm:YAG laser system 2. TFL laser system
- Masking
- Single blind
- Who is masked
- Participant
- Enrolment
- 50 participants (estimated)
Sponsor and investigators
- Lead sponsor
- University of California, San Diego
- Sponsor type
- University, hospital or other
- Collaborators
- Dornier MedTech Systems
- Responsible party
- Principal investigator, Roger L Sur, M.D., University of California, San Diego
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06721975
- Sponsor's protocol ID
- 810115
- Other IDs
- 314954-00001
- Status last verified
- Aug 2025
- First submitted
- 25 Nov 2024
- Last updated
- 9 Jul 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- Yes
- Individual data sharing
- Undecided
Publications
Wan X, Wang W, Liu J, Tong T. Estimating the sample mean and standard deviation from the sample size, median, range and/or interquartile range. BMC Med Res Methodol. 2014 Dec 19;14:135. doi: 10.1186/1471-2288-14-135.
PubMed 25524443Ventimiglia E, Robesti D, Bevilacqua L, Tondelli E, Oliva I, Orecchia L, Juliebo-Jones P, Pietropaolo A, De Coninck V, Esperto F, Tailly T, Ferretti S, Gauhar V, Somani B, Villa L, Keller EX, Salonia A, Traxer O, Kartalas Goumas I. What to expect from the novel pulsed thulium:YAG laser? A systematic review of endourological applications. World J Urol. 2023 Nov;41(11):3301-3308. doi: 10.1007/s00345-023-04580-z. Epub 2023 Sep 8.
PubMed 37682286Ventimiglia E, Pauchard F, Gorgen ARH, Panthier F, Doizi S, Traxer O. How do we assess the efficacy of Ho:YAG low-power laser lithotripsy for the treatment of upper tract urinary stones? Introducing the Joules/mm3 and laser activity concepts. World J Urol. 2021 Mar;39(3):891-896. doi: 10.1007/s00345-020-03241-9. Epub 2020 May 27.
PubMed 32462304Vaddi CM, Ramakrishna P, Ganeshan S, Swamy S, Anandan H, Babu M, Panda R. The clinical efficiency and safety of 60W superpulse thulium fiber laser in retrograde intrarenal surgery. Indian J Urol. 2022 Jul-Sep;38(3):191-196. doi: 10.4103/iju.iju_60_22. Epub 2022 Jul 1.
PubMed 35983111Taratkin M, Azilgareeva C, Korolev D, Barghouthy Y, Tsarichenko D, Akopyan G, Chinenov D, Ali S, Kozlov V, Mikhailov V, Enikeev D. Prospective Single-Center Study of SuperPulsed Thulium Fiber Laser in Retrograde Intrarenal Surgery: Initial Clinical Data. Urol Int. 2022;106(4):404-410. doi: 10.1159/000516933. Epub 2021 Jun 16.
PubMed 34134117Stern KL, Borgert BJ, Wolf JS Jr. Steerable Ureteroscopic Renal Evacuation (SURE) for Large Renal Stones: A Multi-Institutional Center Study. J Endourol. 2023 Aug 28;37(11):1179-83. doi: 10.1089/end.2023.0424. Online ahead of print.
PubMed 37639362Solano C, Corrales M, Panthier F, Candela L, Doizi S, Traxer O. Navigating urolithiasis treatment: assessing the practicality and performance of thulium fiber laser, holmium YAG, and thulium YAG in real-world scenarios. World J Urol. 2023 Oct;41(10):2627-2636. doi: 10.1007/s00345-023-04487-9. Epub 2023 Jul 20.
PubMed 37468656Sierra A, Corrales M, Kolvatzis M, Traxer O. Initial clinical experience with the thulium fiber laser from Quanta System: First 50 reported cases. World J Urol. 2022 Oct;40(10):2549-2553. doi: 10.1007/s00345-022-04096-y. Epub 2022 Jul 21.
PubMed 35861860Petzold R, Suarez-Ibarrola R, Miernik A. Temperature Assessment of a Novel Pulsed Thulium Solid-State Laser Compared with a Holmium:Yttrium-Aluminum-Garnet Laser. J Endourol. 2021 Jun;35(6):853-859. doi: 10.1089/end.2020.0803. Epub 2020 Dec 3.
PubMed 33191783Petzold R, Suarez-Ibarrola R, Miernik A. Gas Bubble Anatomy During Laser Lithotripsy: An Experimental In Vitro Study of a Pulsed Solid-State Tm:YAG and Ho:YAG Device. J Endourol. 2021 Jul;35(7):1051-1057. doi: 10.1089/end.2020.0526. Epub 2020 Dec 22.
PubMed 33207950Petzold R, Miernik A, Suarez-Ibarrola R. Retropulsion force in laser lithotripsy-an in vitro study comparing a Holmium device to a novel pulsed solid-state Thulium laser. World J Urol. 2021 Sep;39(9):3651-3656. doi: 10.1007/s00345-021-03668-8. Epub 2021 Mar 23.
PubMed 33758959Petzold R, Miernik A, Suarez-Ibarrola R. In Vitro Dusting Performance of a New Solid State Thulium Laser Compared to Holmium Laser Lithotripsy. J Endourol. 2021 Feb;35(2):221-225. doi: 10.1089/end.2020.0525. Epub 2020 Sep 9.
PubMed 32799650Patil A, Reddy N, Shah D, Singh A, Ganpule A, Sabnis R, Desai M. High-Power Holmium with MOSES Technology or Thulium Fiber Laser in MiniPerc with Suction: A New Curiosity. J Endourol. 2022 Oct;36(10):1348-1354. doi: 10.1089/end.2021.0915. Epub 2022 Aug 17.
PubMed 35331003Panthier F, Solano C, Chicaud M, Kutchukian S, Candela L, Doizi S, Corrales M, Traxer O. Initial clinical experience with the pulsed solid-state thulium YAG laser from Dornier during RIRS: first 25 cases. World J Urol. 2023 Aug;41(8):2119-2125. doi: 10.1007/s00345-023-04501-0. Epub 2023 Jul 6.
PubMed 37414942Negida A. Sample Size Calculation Guide - Part 6: How to calculate the sample size for a non-inferiority or an equivalence clinical trial. Adv J Emerg Med. 2019 Nov 27;4(1):e15. doi: 10.22114/ajem.v0i0.302. eCollection 2020 Winter. No abstract available.
PubMed 31938784
Study at a glance
From the registry record, last updated by the sponsor on 9 Jul 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Prospective Single-center Study Comparing Thulium Fiber Laser to Pulsed Thulium:YAG Laser in the Ureteroscopic Treatment of Nephrolithiasis
- ClinicalTrials.gov ID
- NCT06721975
- Acronym / sponsor ID
- 810115
- Conditions
- Kidney Stones, Nephrolithiasis
- Keywords
- laser lithotripsy, laser, nephrolithiasis, kidney stone
- Study type
- Interventional
- Recruitment status
- Recruiting
- Enrolment
- 50 participants (estimated)
- Lead sponsor
- University of California, San DiegoUniversity, hospital or other
- Collaborators
- Dornier MedTech Systems
- Study start
- 1 Aug 2024 (actual)
- Primary completion
- 1 Aug 2026 (estimated)
- Study completion
- 31 Dec 2026 (estimated)
- First posted
- 6 Dec 2024 (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.
This research study is being conducted to assess the ability and efficiency of two laser systems to break up kidney stones during ureteroscopy with laser lithotripsy for kidney stone treatment.
Detailed description
Ureteroscopic stone treatment is a minimally invasive procedure commonly performed for kidney stones. Recently, the thulium fiber laser (TFL) has demonstrated effectiveness in this procedure. A new laser system developed by Dornier, the Thulio pulsed Thulium:YAG (p-Tm:YAG ) is beginning to be studied in vitro and in vivo. Dornier Thulio p-Tm:YAG may represent an attractive new laser platform, with comparable properties to TFL including decreased retropulsion, smaller dust, and improved ablation efficiency relative to Ho:YAG. Moreover, the p-Tm:YAG laser has been shown to be effective in treating a wide range of human stone types. The Dornier Thulio p-Tm:YAG laser has been tested clinically in a limited fashion via pilot studies in URS and the RevoLix Hybrid Thulium Laset (HTL) was studied in mini-PCNL. However, limited research has directly compared its efficacy and safety and no prospective comparative trials have been published.
This study aims to investigate whether Dornier Thulio p-Tm:YAG laser is non-inferior to TFL in terms of dusting ablation efficiency (J/mm3) and dusting ablation speed (mm3/s) for ureteroscopic stone treatment. To our knowledge no large-scale study has examined the outcomes of p-Tm:YAG compared to TFL for the treatment of kidney stones which warrants an investigation giving the promising results previously reported.
The primary objective is to assess stone dusting ablation efficiency (Joules/stone volume ablated) between both laser systems in vivo for ureteroscopic stone treatment . Secondary objectives include assessing stone dusting ablation speed (stone volume ablated/lasing time) and complication profile of both laser systems.
The investigators hypothesize that dusting ablation efficiency and speed of the p-Tm:YAG laser will be non-inferior to TFL for the treatment of renal stones totaling 7-20 mm in diameter with similar clinical and safety/complication outcomes.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind (participant)
- Number of arms
- 2
- Model description
- Patient will be randomized to one of the following two groups: 1. p-Tm:YAG laser system 2. TFL laser system
| Arm | Type | Receives |
|---|---|---|
| p-Tm:YAG laser system | Experimental | Device: Thulio pulsed Thulium:YAG (p-Tm:YAG)This is a new laser system developed by Dornier, the Thulio pulsed Thulium:YAG (p-Tm:YAG) |
| TFL laser system | Active comparator | Device: Thulium Laser Fiber (TFL)The thulium fiber laser (TFL) has demonstrated effectiveness in this procedure. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (5 listed)
- Solitary renal stone 7 to 20 mm in size or in the case of multiple stones the conglomerate diameter (additive maximal diameter of all stones on axial imaging of computed tomography) of 7-20 mm is required
- Must be a suitable operative candidate for flexible ureteroscopy per American Urological Association guidelines
- Must be able to give consent
- Bilateral ureteroscopy will be permitted but only the first side (per surgeon discretion) will be included in the study
- Surgeons participating in the study must be urological attending surgeons or fellows with subspecialty training in Endourology
Key exclusion criteria (6 listed)
- Concomitant stones in the ureter
- Prior ipsilateral upper urinary tract reconstructive procedures or history of ipsilateral ureteral stricture
- Prior radiotherapy to the abdomen or pelvis
- Neurogenic bladder or spinal cord injury
- Pregnancy
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 |
|---|---|---|
| Thulio pulsed Thulium:YAG (p-Tm:YAG)A new laser system developed by Dornier, the Thulio pulsed Thulium:YAG (p-Tm:YAG ) is beginning to be studied in vitro and in vivo. Dornier Thulio p-Tm:YAG may represent an attractive new laser platform, with comparable properties to TFL including decreased retropulsion, smaller dust, and improved ablation efficiency relative to Ho:YAG. | Device | p-Tm:YAG laser system |
| Thulium Laser Fiber (TFL)The thulium fiber laser (TFL) has demonstrated effectiveness in this procedure | Device | TFL laser system |
Primary outcome
The amount of energy used per given stone volume
Time frame: From enrollment to the follow up imaging at 6-12 weeks
The primary object is to assess the stone dusting ablation efficiency - efficiency will be defined by amount of laser energy used per stone volume (Joules/mm3)
2 secondary outcomes
Laser ablation speed (volume of stone/lasing time = mm3/sec)
Time frame: From enrollment to the follow up imaging at 6-12 weeks
Post-operative complications compared between the two laser systems
Time frame: From enrollment to the follow up imaging at 6-12 weeks
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 9 Jul 2026.
- Background: PubMed 25524443Wan X, Wang W, Liu J, Tong T. Estimating the sample mean and standard deviation from the sample size, median, range and/or interquartile range. BMC Med Res Methodol. 2014 Dec 19;14:135. doi: 10.1186/1471-2288-14-135.
- Background: PubMed 37682286Ventimiglia E, Robesti D, Bevilacqua L, Tondelli E, Oliva I, Orecchia L, Juliebo-Jones P, Pietropaolo A, De Coninck V, Esperto F, Tailly T, Ferretti S, Gauhar V, Somani B, Villa L, Keller EX, Salonia A, Traxer O, Kartalas Goumas I. What to expect from the novel pulsed thulium:YAG laser? A systematic review of endourological applications. World J Urol. 2023 Nov;41(11):3301-3308. doi: 10.1007/s00345-023-04580-z. Epub 2023 Sep 8.
- Background: PubMed 32462304Ventimiglia E, Pauchard F, Gorgen ARH, Panthier F, Doizi S, Traxer O. How do we assess the efficacy of Ho:YAG low-power laser lithotripsy for the treatment of upper tract urinary stones? Introducing the Joules/mm3 and laser activity concepts. World J Urol. 2021 Mar;39(3):891-896. doi: 10.1007/s00345-020-03241-9. Epub 2020 May 27.
- Background: PubMed 35983111Vaddi CM, Ramakrishna P, Ganeshan S, Swamy S, Anandan H, Babu M, Panda R. The clinical efficiency and safety of 60W superpulse thulium fiber laser in retrograde intrarenal surgery. Indian J Urol. 2022 Jul-Sep;38(3):191-196. doi: 10.4103/iju.iju_60_22. Epub 2022 Jul 1.
- Background: PubMed 34134117Taratkin M, Azilgareeva C, Korolev D, Barghouthy Y, Tsarichenko D, Akopyan G, Chinenov D, Ali S, Kozlov V, Mikhailov V, Enikeev D. Prospective Single-Center Study of SuperPulsed Thulium Fiber Laser in Retrograde Intrarenal Surgery: Initial Clinical Data. Urol Int. 2022;106(4):404-410. doi: 10.1159/000516933. Epub 2021 Jun 16.
- Background: PubMed 37639362Stern KL, Borgert BJ, Wolf JS Jr. Steerable Ureteroscopic Renal Evacuation (SURE) for Large Renal Stones: A Multi-Institutional Center Study. J Endourol. 2023 Aug 28;37(11):1179-83. doi: 10.1089/end.2023.0424. Online ahead of print.
- Background: PubMed 37468656Solano C, Corrales M, Panthier F, Candela L, Doizi S, Traxer O. Navigating urolithiasis treatment: assessing the practicality and performance of thulium fiber laser, holmium YAG, and thulium YAG in real-world scenarios. World J Urol. 2023 Oct;41(10):2627-2636. doi: 10.1007/s00345-023-04487-9. Epub 2023 Jul 20.
- Background: PubMed 35861860Sierra A, Corrales M, Kolvatzis M, Traxer O. Initial clinical experience with the thulium fiber laser from Quanta System: First 50 reported cases. World J Urol. 2022 Oct;40(10):2549-2553. doi: 10.1007/s00345-022-04096-y. Epub 2022 Jul 21.
- Background: PubMed 33191783Petzold R, Suarez-Ibarrola R, Miernik A. Temperature Assessment of a Novel Pulsed Thulium Solid-State Laser Compared with a Holmium:Yttrium-Aluminum-Garnet Laser. J Endourol. 2021 Jun;35(6):853-859. doi: 10.1089/end.2020.0803. Epub 2020 Dec 3.
- Background: PubMed 33207950Petzold R, Suarez-Ibarrola R, Miernik A. Gas Bubble Anatomy During Laser Lithotripsy: An Experimental In Vitro Study of a Pulsed Solid-State Tm:YAG and Ho:YAG Device. J Endourol. 2021 Jul;35(7):1051-1057. doi: 10.1089/end.2020.0526. Epub 2020 Dec 22.
- Background: PubMed 33758959Petzold R, Miernik A, Suarez-Ibarrola R. Retropulsion force in laser lithotripsy-an in vitro study comparing a Holmium device to a novel pulsed solid-state Thulium laser. World J Urol. 2021 Sep;39(9):3651-3656. doi: 10.1007/s00345-021-03668-8. Epub 2021 Mar 23.
- Background: PubMed 32799650Petzold R, Miernik A, Suarez-Ibarrola R. In Vitro Dusting Performance of a New Solid State Thulium Laser Compared to Holmium Laser Lithotripsy. J Endourol. 2021 Feb;35(2):221-225. doi: 10.1089/end.2020.0525. Epub 2020 Sep 9.
- Individual participant dataSharing planned: Undecided
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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.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Thulio pulsed Thulium:YAG (p-Tm:YAG) and Thulium Laser Fiber (TFL) in people with Kidney Stones and Nephrolithiasis, run by University of California, San Diego at 1 site in United States.
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 5 inclusion and 6 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: looking for participants now, as of the sponsor's last update on 9 Jul 2026. 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 United States. 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?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Jade McDermott, BS (858-777-9721, j3mcdermott@health.ucsd.edu), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
The amount of energy used per given stone volume (time frame: From enrollment to the follow up imaging at 6-12 weeks). 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 NCT06721975, which also lists 28 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 9 Jul 2026.