HyperoxaluriaPhase 3NCT00280215
Renal Protective Effect of ACEI and ARB in Primary Hyperoxaluria
A Phase 3 study testing ACEI / Angiotensin converting enzyme inhibitor and ARB /Angiotensin Receptor Blocker in people with Hyperoxaluria, run by Mayo Clinic.
Trial summary
This study will test the effectiveness of two medications: ACEI (angiotensin converting enzyme inhibitor)and ARB (angiotensin receptor blocker) in reducing the renal injury induced by hyperoxaluria in patients with Primary Hyperoxaluria. Read more about this study
- Who is it for?
- Ages 10 to 80 years
- Conditions the study is for
- Hyperoxaluria
- What is being tested?
- ACEI / Angiotensin converting enzyme inhibitor and ARB /Angiotensin Receptor Blocker
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 0 participants
- Where
- No sites listed yet
- Study dates
- Dec 2007to Dec 2011
- Phase
- Phase 3
- 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 10 to 80 years
- All sexes
- No healthy volunteers
- Child, Adult, Older adult
Who may be able to join
- Diagnosis of PH established by liver enzyme analysis in the patient or an affected sibling, DNA testing for mutations of the AGXT and GR/HPR gene, or meeting clinical criteria (Urine oxalate > 70 mg/1.73 m2/day in the absence of malabsorption or dietary excess of oxalate. Elevated urine glycolate or glycerate provides supporting evidence of type I or type II PH, respectively).
- Hyperoxaluria that persists during treatment with pyridoxine.
- Ten years of age or older.
- Glomerular filtration rate > 50 ml/min/1.73 m2 at the start of the study.
- Women of child bearing age will be required to use adequate contraception for 3 months before and throughout the study.
- Patients will be on a stable program of pyridoxine, neutral phosphate, or citrate medications -
Who cannot join
- Age < 10 years. b. Glomerular filtration rate < 50 at start of study c. Hypersensitivity to ACEI or ARB medications d. Chronic use of ACEI or ARB medications prior to enrollment e. Hyperkalemia f. Previous renal transplant g. Homozygosity for the G170R mutation of AGXT h. Unwillingness to use adequate contraception during the study. i. Pregnancy
- -
About this study
This study will test the effectiveness of two medications: ACEI (angiotensin converting enzyme inhibitor)and ARB (angiotensin receptor blocker) in reducing the renal injury induced by hyperoxaluria in patients with Primary Hyperoxaluria.
Hypothesis: Calcium oxalate crystal deposition in the kidney causes inflammation and resulting injury to kidney tissue. Angiotensin blockade will improve these changes, thus slowing the progression of renal insufficiency in patients with Primary Hyperoxaluria.
Read the detailed description
In patients with primary hyperoxaluria (PH), deficiency of hepatic enzymes important in disposition of glyoxylate results in marked hyperoxaluria. Calcium oxalate crystals and high oxalate concentrations in the renal filtrate result in inflammation and injury in the renal parenchyma. Loss of renal function over time is characteristic, with end stage renal failure occurring in half the patients by age 35 years, but as early as infancy in some patients. Experience in animal models of hyperoxaluria, and from other renal diseases, supports a role for ACEI and ARB medications in ameliorating inflammation and injury thus providing a renal protective effect.
We propose to study the short-term effect of combined angiotensin converting enzyme inhibitor (ACEI) and angiotensin receptor blocking (ARB) therapy in patients with PH, in a controlled, randomized, two-year study. Primary endpoints will be urinary markers of renal tubular injury (retinol binding protein (RBP), alpha 1 microglobulin (α1m), γ-glutamyl transferase (GGT)) and interstitial fibrosis (transforming growth factor beta 1 (TGFβ1). Secondary endpoints will be the rates of change in renal tubular injury and renal function as determined by serum creatinine and creatinine clearance.
- Conditions
- Hyperoxaluria
- Being tested
- ACEI / Angiotensin converting enzyme inhibitor, ARB /Angiotensin Receptor Blocker, Placebo
- Keywords
- Primary Hyperoxaluria
- Medical subject headings
- Hyperoxaluria, Hyperoxaluria, Primary
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
ACEI / Angiotensin converting enzyme inhibitorDrug
Also called Lisinopril
Patients will be randomized to a combination of Angiotensin Converting Enzyme Inhibitor and Angiotensin Receptor Blocker, Patients will be randomized to a combination of ARB(losartan 50 mg daily in adult patients, 0.7 mg/kg/day in patients < 40 kg) ACE-I (lisinopril 10 mg daily in adult patients, 0.15 mg/kg/day in pediatric patients < 40 kg) to be taken for 24 months.
ARB /Angiotensin Receptor BlockerDrug
Also called Losartan
Patients will be randomized to a combination of Angiotensin Converting Enzyme Inhibitor and Angiotensin Receptor Blocker,Patients will be randomized to a combination of ARB(losartan 50 mg daily in adult patients, 0.7 mg/kg/day in patients < 40 kg) ACE-I (lisinopril 10 mg daily in adult patients, 0.15 mg/kg/day in pediatric patients < 40 kg) to be taken for 24 months.
PlaceboDrug
Patients will receive placebo for 24 months
| Study group | Role | What they receive |
|---|---|---|
| 1 | Active comparator | Patients will be randomized to a combination of Angiotensin Converting Enzyme Inhibitor and Angiotensin Receptor Blocker. Patients will be randomized to a combination of ARB(losartan 50 mg daily in adult patients, 0.7 mg/kg/day in patients < 40 kg) ACE-I (lisinopril 10 mg daily in adult patients, 0.15 mg/kg/day in pediatric patients < 40 kg) to be taken for 24 months. Receives: Drug: ACEI / Angiotensin converting enzyme inhibitor; Drug: ARB /Angiotensin Receptor Blocker |
| 2 | Placebo comparator | Patients will take placebo for 24 months. Receives: Drug: Placebo |
What is being measured
The primary outcome is the main question the study is designed to answer.
Two-year change in the urinary markers of renal tubular injury and interstitial fibrosis
Measured: 2 years
Secondary outcomes (1)
Rate of change in 1. Renal tubular injury markers and 2. Renal function as determined by serum creatinine and creatinine clearance.
Measured: 2 years
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted20 Jan 2006 (estimated)
- Study startDec 2007
- Primary completionDec 2011
- Study completionDec 2011
Why it stopped: Inadequate number of patients, lack of funding
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 HyperoxaluriaStudies of the same condition, open and under way.
- More trials run by Mayo ClinicThe 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 3
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Triple blind
- Who is masked
- Participant, Care provider, Investigator
- Enrolment
- 0 participants (actual)
Sponsor and investigators
- Lead sponsor
- Mayo Clinic
- Sponsor type
- University, hospital or other
- Investigators
- Dawn S Milliner, M.D., Principal investigator, Mayo Clinic Hyperoxaluria Center, Rochester MN
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00280215
- Sponsor's protocol ID
- 2203-05
- Other IDs
- NIH grant # DK 73354
- Status last verified
- Apr 2015
- First submitted
- 19 Jan 2006
- Last updated
- 7 Apr 2015
- Results posted
- No
- Data monitoring committee
- No
Publications
Milliner DS, Eickholt JT, Bergstralh EJ, Wilson DM, Smith LH. Results of long-term treatment with orthophosphate and pyridoxine in patients with primary hyperoxaluria. N Engl J Med. 1994 Dec 8;331(23):1553-8. doi: 10.1056/NEJM199412083312304.
PubMed 7969325Khan SR, Shevock PN, Hackett RL. Urinary enzymes and calcium oxalate urolithiasis. J Urol. 1989 Sep;142(3):846-9. doi: 10.1016/s0022-5347(17)38928-0.
PubMed 2570167Lieske JC, Monico CG, Holmes WS, Bergstralh EJ, Slezak JM, Rohlinger AL, Olson JB, Milliner DS. International registry for primary hyperoxaluria. Am J Nephrol. 2005 May-Jun;25(3):290-6. doi: 10.1159/000086360. Epub 2005 Jun 15.
PubMed 15961949Huang C, Kim Y, Caramori ML, Fish AJ, Rich SS, Miller ME, Russell GB, Mauer M. Cellular basis of diabetic nephropathy: II. The transforming growth factor-beta system and diabetic nephropathy lesions in type 1 diabetes. Diabetes. 2002 Dec;51(12):3577-81. doi: 10.2337/diabetes.51.12.3577.
PubMed 12453917Goumenos DS, Tsakas S, El Nahas AM, Alexandri S, Oldroyd S, Kalliakmani P, Vlachojannis JG. Transforming growth factor-beta(1) in the kidney and urine of patients with glomerular disease and proteinuria. Nephrol Dial Transplant. 2002 Dec;17(12):2145-52. doi: 10.1093/ndt/17.12.2145.
PubMed 12454225Scaglione R, Argano C, Parrinello G, Colomba D, Di Chiara T, Ferrante A, Di Garbo V, Avellone G, Licata G. Relationship between transforming growth factor beta1 and progression of hypertensive renal disease. J Hum Hypertens. 2002 Sep;16(9):641-5. doi: 10.1038/sj.jhh.1001465.
PubMed 12214261Abbate M, Zoja C, Rottoli D, Corna D, Tomasoni S, Remuzzi G. Proximal tubular cells promote fibrogenesis by TGF-beta1-mediated induction of peritubular myofibroblasts. Kidney Int. 2002 Jun;61(6):2066-77. doi: 10.1046/j.1523-1755.2002.00380.x.
PubMed 12028447Toblli JE, Ferder L, Stella I, Angerosa M, Inserra F. Protective role of enalapril for chronic tubulointerstitial lesions of hyperoxaluria. J Urol. 2001 Jul;166(1):275-80.
PubMed 11435885Toblli JE, Stella I, Angerosa M, Nyberg C, Ferder L, Inserra F: Transforming growth factor-b1 (TGF--b1) and collagen typ III in hyperoxaluric rats treated with enalapril. J Am Soc Nephrol 8:528A, 1997.
Toblli JE, Stella I, de Cavanagh E, Angerosa M, Inserra F, Ferder L. Enalapril prevents tubulointerstitial lesions by hyperoxaluria. Hypertension. 1999 Jan;33(1 Pt 2):225-31. doi: 10.1161/01.hyp.33.1.225.
PubMed 9931109Danielpour D. Improved sandwich enzyme-linked immunosorbent assays for transforming growth factor beta 1. J Immunol Methods. 1993 Jan 14;158(1):17-25. doi: 10.1016/0022-1759(93)90254-5.
PubMed 8429213Sato M, Muragaki Y, Saika S, Roberts AB, Ooshima A. Targeted disruption of TGF-beta1/Smad3 signaling protects against renal tubulointerstitial fibrosis induced by unilateral ureteral obstruction. J Clin Invest. 2003 Nov;112(10):1486-94. doi: 10.1172/JCI19270.
PubMed 14617750Border WA, Noble NA. Interactions of transforming growth factor-beta and angiotensin II in renal fibrosis. Hypertension. 1998 Jan;31(1 Pt 2):181-8. doi: 10.1161/01.hyp.31.1.181.
PubMed 9453300Haugen EN, Croatt AJ, Nath KA. Angiotensin II induces renal oxidant stress in vivo and heme oxygenase-1 in vivo and in vitro. Kidney Int. 2000 Jul;58(1):144-52. doi: 10.1046/j.1523-1755.2000.00150.x.
PubMed 10886559de Cavanagh EM, Fraga CG, Ferder L, Inserra F. Enalapril and captopril enhance antioxidant defenses in mouse tissues. Am J Physiol. 1997 Feb;272(2 Pt 2):R514-8. doi: 10.1152/ajpregu.1997.272.2.R514.
PubMed 9124472
Study at a glance
From the registry record, last updated by the sponsor on 7 Apr 2015. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Renal Protective Effect of ACEI and ARB in Primary Hyperoxaluria
- ClinicalTrials.gov ID
- NCT00280215
- Acronym / sponsor ID
- 2203-05
- Conditions
- Hyperoxaluria
- Keywords
- Primary Hyperoxaluria
- Phase
- Phase 3
- Study type
- Interventional
- Recruitment status
- WithdrawnReason stopped: Inadequate number of patients, lack of funding
- Enrolment
- 0 participants (actual)
- Lead sponsor
- Mayo ClinicUniversity, hospital or other
- Collaborators
- National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
- Study start
- Dec 2007
- Primary completion
- Dec 2011 (actual)
- Study completion
- Dec 2011 (actual)
- First posted
- 20 Jan 2006 (estimated)
- 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 study will test the effectiveness of two medications: ACEI (angiotensin converting enzyme inhibitor)and ARB (angiotensin receptor blocker) in reducing the renal injury induced by hyperoxaluria in patients with Primary Hyperoxaluria.
Hypothesis: Calcium oxalate crystal deposition in the kidney causes inflammation and resulting injury to kidney tissue. Angiotensin blockade will improve these changes, thus slowing the progression of renal insufficiency in patients with Primary Hyperoxaluria.
Detailed description
In patients with primary hyperoxaluria (PH), deficiency of hepatic enzymes important in disposition of glyoxylate results in marked hyperoxaluria. Calcium oxalate crystals and high oxalate concentrations in the renal filtrate result in inflammation and injury in the renal parenchyma. Loss of renal function over time is characteristic, with end stage renal failure occurring in half the patients by age 35 years, but as early as infancy in some patients. Experience in animal models of hyperoxaluria, and from other renal diseases, supports a role for ACEI and ARB medications in ameliorating inflammation and injury thus providing a renal protective effect.
We propose to study the short-term effect of combined angiotensin converting enzyme inhibitor (ACEI) and angiotensin receptor blocking (ARB) therapy in patients with PH, in a controlled, randomized, two-year study. Primary endpoints will be urinary markers of renal tubular injury (retinol binding protein (RBP), alpha 1 microglobulin (α1m), γ-glutamyl transferase (GGT)) and interstitial fibrosis (transforming growth factor beta 1 (TGFβ1). Secondary endpoints will be the rates of change in renal tubular injury and renal function as determined by serum creatinine and creatinine clearance.
Study design
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Triple blind (participant, care provider, investigator)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| 1 | Active comparator | Drug: ACEI / Angiotensin converting enzyme inhibitor, Drug: ARB /Angiotensin Receptor BlockerPatients will be randomized to a combination of Angiotensin Converting Enzyme Inhibitor and Angiotensin Receptor Blocker. Patients will be randomized to a combination of ARB(losartan 50 mg daily in adult patients, 0.7 mg/kg/day in patients < 40 kg) ACE-I (lisinopril 10 mg daily in adult patients, 0.15 mg/kg/day in pediatric patients < 40 kg) to be taken for 24 months. |
| 2 | Placebo comparator | Drug: PlaceboPatients will take placebo for 24 months. |
Who may qualify
- Ages
- 10 to 80 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Child, Adult, Older adult
Key inclusion criteria (6 listed)
- Diagnosis of PH established by liver enzyme analysis in the patient or an affected sibling, DNA testing for mutations of the AGXT and GR/HPR gene, or meeting clinical criteria (Urine oxalate > 70 mg/1.73 m2/day in the absence of malabsorption or dietary excess of oxalate. Elevated urine glycolate or glycerate provides supporting evidence of type I or type II PH, respectively).
- Hyperoxaluria that persists during treatment with pyridoxine.
- Ten years of age or older.
- Glomerular filtration rate > 50 ml/min/1.73 m2 at the start of the study.
- Women of child bearing age will be required to use adequate contraception for 3 months before and throughout the study.
Key exclusion criteria (2 listed)
- Age < 10 years. b. Glomerular filtration rate < 50 at start of study c. Hypersensitivity to ACEI or ARB medications d. Chronic use of ACEI or ARB medications prior to enrollment e. Hyperkalemia f. Previous renal transplant g. Homozygosity for the G170R mutation of AGXT h. Unwillingness to use adequate contraception during the study. i. 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 |
|---|---|---|
| ACEI / Angiotensin converting enzyme inhibitorAlso: LisinoprilPatients will be randomized to a combination of Angiotensin Converting Enzyme Inhibitor and Angiotensin Receptor Blocker, Patients will be randomized to a combination of ARB(losartan 50 mg daily in adult patients, 0.7 mg/kg/day in patients < 40 kg) ACE-I (lisinopril 10 mg daily in adult patients, 0.15 mg/kg/day in pediatric patients < 40 kg) to be taken for 24 months. | Drug | 1 |
| ARB /Angiotensin Receptor BlockerAlso: LosartanPatients will be randomized to a combination of Angiotensin Converting Enzyme Inhibitor and Angiotensin Receptor Blocker,Patients will be randomized to a combination of ARB(losartan 50 mg daily in adult patients, 0.7 mg/kg/day in patients < 40 kg) ACE-I (lisinopril 10 mg daily in adult patients, 0.15 mg/kg/day in pediatric patients < 40 kg) to be taken for 24 months. | Drug | 1 |
| PlaceboPatients will receive placebo for 24 months | Drug | 2 |
Primary outcome
Two-year change in the urinary markers of renal tubular injury and interstitial fibrosis
Time frame: 2 years
1 secondary outcome
Rate of change in 1. Renal tubular injury markers and 2. Renal function as determined by serum creatinine and creatinine clearance.
Time frame: 2 years
Results and safety
The study was withdrawn before enrolling participants, so there are no results.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 7 Apr 2015.
- Background: PubMed 7969325Milliner DS, Eickholt JT, Bergstralh EJ, Wilson DM, Smith LH. Results of long-term treatment with orthophosphate and pyridoxine in patients with primary hyperoxaluria. N Engl J Med. 1994 Dec 8;331(23):1553-8. doi: 10.1056/NEJM199412083312304.
- Background: PubMed 2570167Khan SR, Shevock PN, Hackett RL. Urinary enzymes and calcium oxalate urolithiasis. J Urol. 1989 Sep;142(3):846-9. doi: 10.1016/s0022-5347(17)38928-0.
- Background: PubMed 15961949Lieske JC, Monico CG, Holmes WS, Bergstralh EJ, Slezak JM, Rohlinger AL, Olson JB, Milliner DS. International registry for primary hyperoxaluria. Am J Nephrol. 2005 May-Jun;25(3):290-6. doi: 10.1159/000086360. Epub 2005 Jun 15.
- Background: PubMed 12453917Huang C, Kim Y, Caramori ML, Fish AJ, Rich SS, Miller ME, Russell GB, Mauer M. Cellular basis of diabetic nephropathy: II. The transforming growth factor-beta system and diabetic nephropathy lesions in type 1 diabetes. Diabetes. 2002 Dec;51(12):3577-81. doi: 10.2337/diabetes.51.12.3577.
- Background: PubMed 12454225Goumenos DS, Tsakas S, El Nahas AM, Alexandri S, Oldroyd S, Kalliakmani P, Vlachojannis JG. Transforming growth factor-beta(1) in the kidney and urine of patients with glomerular disease and proteinuria. Nephrol Dial Transplant. 2002 Dec;17(12):2145-52. doi: 10.1093/ndt/17.12.2145.
- Background: PubMed 12214261Scaglione R, Argano C, Parrinello G, Colomba D, Di Chiara T, Ferrante A, Di Garbo V, Avellone G, Licata G. Relationship between transforming growth factor beta1 and progression of hypertensive renal disease. J Hum Hypertens. 2002 Sep;16(9):641-5. doi: 10.1038/sj.jhh.1001465.
- Background: PubMed 12028447Abbate M, Zoja C, Rottoli D, Corna D, Tomasoni S, Remuzzi G. Proximal tubular cells promote fibrogenesis by TGF-beta1-mediated induction of peritubular myofibroblasts. Kidney Int. 2002 Jun;61(6):2066-77. doi: 10.1046/j.1523-1755.2002.00380.x.
- Background: PubMed 11435885Toblli JE, Ferder L, Stella I, Angerosa M, Inserra F. Protective role of enalapril for chronic tubulointerstitial lesions of hyperoxaluria. J Urol. 2001 Jul;166(1):275-80.
- BackgroundToblli JE, Stella I, Angerosa M, Nyberg C, Ferder L, Inserra F: Transforming growth factor-b1 (TGF--b1) and collagen typ III in hyperoxaluric rats treated with enalapril. J Am Soc Nephrol 8:528A, 1997.
- Background: PubMed 9931109Toblli JE, Stella I, de Cavanagh E, Angerosa M, Inserra F, Ferder L. Enalapril prevents tubulointerstitial lesions by hyperoxaluria. Hypertension. 1999 Jan;33(1 Pt 2):225-31. doi: 10.1161/01.hyp.33.1.225.
- Background: PubMed 8429213Danielpour D. Improved sandwich enzyme-linked immunosorbent assays for transforming growth factor beta 1. J Immunol Methods. 1993 Jan 14;158(1):17-25. doi: 10.1016/0022-1759(93)90254-5.
- Background: PubMed 14617750Sato M, Muragaki Y, Saika S, Roberts AB, Ooshima A. Targeted disruption of TGF-beta1/Smad3 signaling protects against renal tubulointerstitial fibrosis induced by unilateral ureteral obstruction. J Clin Invest. 2003 Nov;112(10):1486-94. doi: 10.1172/JCI19270.
- The Oxalosis and Hyperoxaluria FoundationLink provided by the sponsor.
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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. This study is not recruiting at the moment.
Dawn S Milliner, M.D. principal investigator
Mayo Clinic Hyperoxaluria Center, Rochester MN
Questions about this trial
What is this clinical trial studying?
A Phase 3 study testing ACEI / Angiotensin converting enzyme inhibitor and ARB /Angiotensin Receptor Blocker in people with Hyperoxaluria, run by Mayo Clinic.
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 6 inclusion and 2 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: withdrawn, as of the sponsor's last update on 7 Apr 2015. Status can change between updates, so confirm with the study contact before making plans.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
The study was withdrawn before enrolling participants, so there are no results.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Two-year change in the urinary markers of renal tubular injury and interstitial fibrosis (time frame: 2 years). 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 NCT00280215, 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 7 Apr 2015.