Age Related Macular DegenerationPhase 4TURFNCT01543568
Study for Recalcitrant Age Related Macular Degeneration
A Phase 4 study testing aflibercept 2.0 mg in people with Age Related Macular Degeneration, run by David M. Brown, M.D. at 1 site in United States.
Trial summary
50 Patients with recalcitrant exudative age-related macular degeneration with a history of retinal or subretinal fluid after multiple intravitreal injections with ranibizumab 0.5mg and subsequently treated with ranibizumab 2.0mg, who are incomplete responders to 2.0mg of ranibizumab. Read more about this study
- Who is it for?
- Ages 50 years and older
- Conditions the study is for
- Age Related Macular Degeneration
- What is being tested?
- aflibercept 2.0 mg
- Type of treatment
- Injection or infusion
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 46 participants
- Where
- 1 siteUnited States
- Study dates
- Feb 2012to Oct 2014
- Phase
- Phase 4
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
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 50 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Ability to provide written informed consent and comply with study assessments for the full duration of the study
- Age > 50 years
- Choroidal neovascularization secondary to AMD
- History of treatment with 0.5mg ranibizumab followed by 2.0mg ranibizumab for AMD
- Best corrected visual acuity in the study eye between 20/20 to 20/400 using an ETDRS chart
Who cannot join
- Pregnancy (positive pregnancy test) or lactation
- Premenopausal women not using adequate contraception. The following are considered effective means of contraception: surgical sterilization or use of oral contraceptives, barrier contraception with either a condom or diaphragm in conjunction with spermicidal gel, an IUD, or contraceptive hormone implant or patch.
- Participation in another simultaneous medical investigation or trial
- Prior treatment with anti-VEGF therapy in the study eye within 28 days of baseline
- Prior treatment with PDT within the past 3 months or more than 4 prior PDT treatments.
- Presence of significant subfoveal fibrosis or atrophy.
Show all 19Show fewer
- Prior treatment with intravitreal aflibercept injection
- Prior treatment with triamcinolone in the study eye within 6 months of BSL.
- Prior treatment with dexamethasone in the study eye within 30 days prior to BSL
- Intraocular surgery (including cataract surgery) in the study eye within 2 months preceding Baseline
- History of vitrectomy surgery, submacular surgery, or other surgical intervention for AMD in the study eye
- Active intraocular inflammation (grade trace or above) in the study eye
- Current vitreous hemorrhage in the study eye
- History of rhegmatogenous retinal detachment or macular hole (Stage 3 or 4) in the study eye
- Active infectious conjunctivitis, keratitis, scleritis, or endophthalmitis in either eye
- Uncontrolled glaucoma in the study eye (defined as IOP ≥ 30 mmHg despite treatment with anti-glaucoma medication)
- History of cerebral vascular accident, myocardial infarction, transient ischemic attacks within 3 months of study enrollment.
- History of allergy to fluorescein, ICG or iodine, not amenable to treatment
- History of retinal pigment epithelial tear or rip
Trial locations and contacts
1 site in 1 country.
About this study
Official title: AflibercepT for Subjects Who Are Incomplete Responders to mUltiple Intravitreal Injections of Ranibizumab, Anti-VegF (The TURF Study)
50 Patients with recalcitrant exudative age-related macular degeneration with a history of retinal or subretinal fluid after multiple intravitreal injections with ranibizumab 0.5mg and subsequently treated with ranibizumab 2.0mg, who are incomplete responders to 2.0mg of ranibizumab.
Read the detailed description
The rationale for the TURF trial is based on the greater binding affinity of VEGF Trap-eye, which theoretically may prove to be more effective for recalcitrant wet AMD and therefore may demonstrate a positive impact on visual acuity and the foveal anatomy of subjects who have a history of a less than optimal anatomical and visual response to multiple intravitreal injections of 2.0mg (super-dose) ranibizumab. Based on the anatomical data from the VIEW1 and VIEW2 trials, approximately 70% of VEGF-Trap eye patients had no evidence of fluid on OCT compared to approximately 55% of ranibizumab patients. One potential interpretation of this clinical data is that the increased binding affinity and longer half-life of VEGF-Trap eye result in the resolution of more fluid for a longer duration of effect.
Patients to be enrolled in this study have a history of requiring monthly dosing of ranibizumab 2.0mg to achieve maximum resolution of fluid on OCT and increased visual acuity. These patients initially showed minimal fluid resolution visual acuity gains while treated with Lucentis (0.5mg ranibizumab) and were subsequently treated with 2.0mg monthly. It is expected that treating these same patients with 2.0mg EYLEA™ (aflibercept injection for eye) will maintain the fluid resolution on OCT and visual acuity gains previously requiring a super-dose of ranibizumab.
- Conditions
- Age Related Macular Degeneration
- Being tested
- aflibercept 2.0 mg
- Keywords
- Age related Macular Degeneration, Recalcitrant Age Related Macular Degeneration
- Medical subject headings
- Macular Degeneration
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
aflibercept 2.0 mgDrug
Also called Veg F Trap
Intravitreal aflibercept injection 2.0 mg
| Study group | Role | What they receive |
|---|---|---|
| 2.0 mg intravitreal Aflibercept | Other | open label, Subjects seen monthly \& given mandatory 2.0 mg aflibercept at baseline, months 1, 2 and 4. Pro re nata (PRN) retreatment at months 3 and 5 was performed upon evidence of disease on spectral domain-optical coherence tomography (SD-OCT) Receives: Drug: aflibercept 2.0 mg |
What is being measured
The primary outcome is the main question the study is designed to answer.
The Number of Patients With no Fluid on OCT
Measured: 6 months
Secondary outcomes (6)
Mean Change in OCT Central Foveal Thickness
Measured: 6 Months
Average Time to Resolution of Intraretinal Cysts and Sub Retinal Fluid on OCT
Measured: 6 months
The Percentage of Patients Who Lose > 15 Letters Visual Acuity
Measured: 6 Months
Mean Change in Visual Acuity (BCVA)
Change in Early Treatment of Diabetic Retinopathy Study Best Corrected Visual Acuity (ETDRS-BCVA) from baseline to month 6. BCVA is measured using an eye chart and is reported as the number of letters read correctly using the ETDRS Scale (ranging from 0 to 100 letters) in the study eye. The lower the number of letters read correctly on the eye chart, the worse the vision (or visual acuity). An increase in the number of letters read correctly means that vision has improved.
Measured: 6 Months
Quantitative Change in Area (μ) From Baseline in Choroidal Neovascular Lesion Characteristics/Size as Measured by FA/Fundus Photos
Measured: 6 Months
Mean Number of 0.2 mg Aflibercept Injections Administered
Measured: at 6 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted5 Mar 2012 (estimated)
- Study startFeb 2012
- Primary completionOct 2014
- Study completionOct 2014
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Publications (16)Papers the sponsor has linked to this study.
- Other trials for Age Related Macular DegenerationStudies of the same condition, open and under way.
- 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 4
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 46 participants (actual)
Sponsor and investigators
- Lead sponsor
- David M. Brown, M.D.
- Sponsor type
- University, hospital or other
- Collaborators
- Regeneron Pharmaceuticals
- Responsible party
- Sponsor-investigator, David M. Brown, M.D., Greater Houston Retina Research
- Investigators
- David M Brown, MD, Principal investigator, Director Greater Houston Research
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01543568
- Sponsor's protocol ID
- TURF-01
- Acronym
- TURF
- Status last verified
- Nov 2016
- First submitted
- 27 Feb 2012
- Last updated
- 2 Jan 2017
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- Yes
Publications
Aflibercept (eylea) for age-related macular degeneration. Med Lett Drugs Ther. 2012 Feb 6;54(1383):9-10. No abstract available.
PubMed 22354219Ohr M, Kaiser PK. Intravitreal aflibercept injection for neovascular (wet) age-related macular degeneration. Expert Opin Pharmacother. 2012 Mar;13(4):585-91. doi: 10.1517/14656566.2012.658368. Epub 2012 Feb 3.
PubMed 22300011Gragoudas ES, Adamis AP, Cunningham ET Jr, Feinsod M, Guyer DR; VEGF Inhibition Study in Ocular Neovascularization Clinical Trial Group. Pegaptanib for neovascular age-related macular degeneration. N Engl J Med. 2004 Dec 30;351(27):2805-16. doi: 10.1056/NEJMoa042760.
PubMed 15625332CATT Research Group; Martin DF, Maguire MG, Ying GS, Grunwald JE, Fine SL, Jaffe GJ. Ranibizumab and bevacizumab for neovascular age-related macular degeneration. N Engl J Med. 2011 May 19;364(20):1897-908. doi: 10.1056/NEJMoa1102673. Epub 2011 Apr 28.
PubMed 21526923Rosenfeld PJ, Brown DM, Heier JS, Boyer DS, Kaiser PK, Chung CY, Kim RY; MARINA Study Group. Ranibizumab for neovascular age-related macular degeneration. N Engl J Med. 2006 Oct 5;355(14):1419-31. doi: 10.1056/NEJMoa054481.
PubMed 17021318Brown DM, Kaiser PK, Michels M, Soubrane G, Heier JS, Kim RY, Sy JP, Schneider S; ANCHOR Study Group. Ranibizumab versus verteporfin for neovascular age-related macular degeneration. N Engl J Med. 2006 Oct 5;355(14):1432-44. doi: 10.1056/NEJMoa062655.
PubMed 17021319Rosenfeld PJ, Moshfeghi AA, Puliafito CA. Optical coherence tomography findings after an intravitreal injection of bevacizumab (avastin) for neovascular age-related macular degeneration. Ophthalmic Surg Lasers Imaging. 2005 Jul-Aug;36(4):331-5.
PubMed 16156152Avery RL, Pieramici DJ, Rabena MD, Castellarin AA, Nasir MA, Giust MJ. Intravitreal bevacizumab (Avastin) for neovascular age-related macular degeneration. Ophthalmology. 2006 Mar;113(3):363-372.e5. doi: 10.1016/j.ophtha.2005.11.019. Epub 2006 Feb 3.
PubMed 16458968Fung AE, Lalwani GA, Rosenfeld PJ, Dubovy SR, Michels S, Feuer WJ, Puliafito CA, Davis JL, Flynn HW Jr, Esquiabro M. An optical coherence tomography-guided, variable dosing regimen with intravitreal ranibizumab (Lucentis) for neovascular age-related macular degeneration. Am J Ophthalmol. 2007 Apr;143(4):566-83. doi: 10.1016/j.ajo.2007.01.028.
PubMed 17386270Iida T, Yannuzzi LA, Spaide RF, Borodoker N, Carvalho CA, Negrao S. Cystoid macular degeneration in chronic central serous chorioretinopathy. Retina. 2003 Feb;23(1):1-7; quiz 137-8. doi: 10.1097/00006982-200302000-00001.
PubMed 12652224Imamura Y, Fujiwara T, Spaide RF. Fundus autofluorescence and visual acuity in central serous chorioretinopathy. Ophthalmology. 2011 Apr;118(4):700-5. doi: 10.1016/j.ophtha.2010.08.017. Epub 2010 Nov 5.
PubMed 21055816Stewart MW, Rosenfeld PJ. Predicted biological activity of intravitreal VEGF Trap. Br J Ophthalmol. 2008 May;92(5):667-8. doi: 10.1136/bjo.2007.134874. Epub 2008 Mar 20.
PubMed 18356264Kaiser PK. Vascular endothelial growth factor Trap-Eye for diabetic macular oedema. Br J Ophthalmol. 2009 Feb;93(2):135-6. doi: 10.1136/bjo.2008.144071. No abstract available.
PubMed 19174397Holash J, Davis S, Papadopoulos N, Croll SD, Ho L, Russell M, Boland P, Leidich R, Hylton D, Burova E, Ioffe E, Huang T, Radziejewski C, Bailey K, Fandl JP, Daly T, Wiegand SJ, Yancopoulos GD, Rudge JS. VEGF-Trap: a VEGF blocker with potent antitumor effects. Proc Natl Acad Sci U S A. 2002 Aug 20;99(17):11393-8. doi: 10.1073/pnas.172398299. Epub 2002 Aug 12.
PubMed 12177445Eyetech Study Group. Preclinical and phase 1A clinical evaluation of an anti-VEGF pegylated aptamer (EYE001) for the treatment of exudative age-related macular degeneration. Retina. 2002 Apr;22(2):143-52. doi: 10.1097/00006982-200204000-00002.
PubMed 11927845
Study at a glance
From the registry record, last updated by the sponsor on 2 Jan 2017. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- AflibercepT for Subjects Who Are Incomplete Responders to mUltiple Intravitreal Injections of Ranibizumab, Anti-VegF (The TURF Study)
- ClinicalTrials.gov ID
- NCT01543568
- Acronym / sponsor ID
- TURF / TURF-01
- Conditions
- Age Related Macular Degeneration
- Keywords
- Age related Macular Degeneration, Recalcitrant Age Related Macular Degeneration
- Phase
- Phase 4
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 46 participants (actual)
- Lead sponsor
- David M. Brown, M.D.University, hospital or other
- Collaborators
- Regeneron Pharmaceuticals
- Study start
- Feb 2012
- Primary completion
- Oct 2014 (actual)
- Study completion
- Oct 2014 (actual)
- First posted
- 5 Mar 2012 (estimated)
- Results
- Posted 2 Jan 2017
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
50 Patients with recalcitrant exudative age-related macular degeneration with a history of retinal or subretinal fluid after multiple intravitreal injections with ranibizumab 0.5mg and subsequently treated with ranibizumab 2.0mg, who are incomplete responders to 2.0mg of ranibizumab.
Detailed description
The rationale for the TURF trial is based on the greater binding affinity of VEGF Trap-eye, which theoretically may prove to be more effective for recalcitrant wet AMD and therefore may demonstrate a positive impact on visual acuity and the foveal anatomy of subjects who have a history of a less than optimal anatomical and visual response to multiple intravitreal injections of 2.0mg (super-dose) ranibizumab. Based on the anatomical data from the VIEW1 and VIEW2 trials, approximately 70% of VEGF-Trap eye patients had no evidence of fluid on OCT compared to approximately 55% of ranibizumab patients. One potential interpretation of this clinical data is that the increased binding affinity and longer half-life of VEGF-Trap eye result in the resolution of more fluid for a longer duration of effect.
Patients to be enrolled in this study have a history of requiring monthly dosing of ranibizumab 2.0mg to achieve maximum resolution of fluid on OCT and increased visual acuity. These patients initially showed minimal fluid resolution visual acuity gains while treated with Lucentis (0.5mg ranibizumab) and were subsequently treated with 2.0mg monthly. It is expected that treating these same patients with 2.0mg EYLEA™ (aflibercept injection for eye) will maintain the fluid resolution on OCT and visual acuity gains previously requiring a super-dose of ranibizumab.
Study design
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| 2.0 mg intravitreal Aflibercept | Other | Drug: aflibercept 2.0 mgopen label, Subjects seen monthly \& given mandatory 2.0 mg aflibercept at baseline, months 1, 2 and 4. Pro re nata (PRN) retreatment at months 3 and 5 was performed upon evidence of disease on spectral domain-optical coherence tomography (SD-OCT) |
Who may qualify
- Ages
- 50 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (5 listed)
- Ability to provide written informed consent and comply with study assessments for the full duration of the study
- Age > 50 years
- Choroidal neovascularization secondary to AMD
- History of treatment with 0.5mg ranibizumab followed by 2.0mg ranibizumab for AMD
- Best corrected visual acuity in the study eye between 20/20 to 20/400 using an ETDRS chart
Key exclusion criteria (19 listed)
- Pregnancy (positive pregnancy test) or lactation
- Premenopausal women not using adequate contraception. The following are considered effective means of contraception: surgical sterilization or use of oral contraceptives, barrier contraception with either a condom or diaphragm in conjunction with spermicidal gel, an IUD, or contraceptive hormone implant or patch.
- Participation in another simultaneous medical investigation or trial
- Prior treatment with anti-VEGF therapy in the study eye within 28 days of baseline
- Prior treatment with PDT within the past 3 months or more than 4 prior PDT treatments.
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 |
|---|---|---|
| aflibercept 2.0 mgAlso: Veg F TrapIntravitreal aflibercept injection 2.0 mg | Drug | 2.0 mg intravitreal Aflibercept |
Primary outcome
The Number of Patients With no Fluid on OCT
Time frame: 6 months
6 secondary outcomes
Mean Change in OCT Central Foveal Thickness
Time frame: 6 Months
Average Time to Resolution of Intraretinal Cysts and Sub Retinal Fluid on OCT
Time frame: 6 months
The Percentage of Patients Who Lose > 15 Letters Visual Acuity
Time frame: 6 Months
Mean Change in Visual Acuity (BCVA)
Time frame: 6 Months
Quantitative Change in Area (μ) From Baseline in Choroidal Neovascular Lesion Characteristics/Size as Measured by FA/Fundus Photos
Time frame: 6 Months
Mean Number of 0.2 mg Aflibercept Injections Administered
Time frame: at 6 months
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 2 Jan 2017.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Background: PubMed 22354219Aflibercept (eylea) for age-related macular degeneration. Med Lett Drugs Ther. 2012 Feb 6;54(1383):9-10. No abstract available.
- Background: PubMed 22300011Ohr M, Kaiser PK. Intravitreal aflibercept injection for neovascular (wet) age-related macular degeneration. Expert Opin Pharmacother. 2012 Mar;13(4):585-91. doi: 10.1517/14656566.2012.658368. Epub 2012 Feb 3.
- Background: PubMed 15625332Gragoudas ES, Adamis AP, Cunningham ET Jr, Feinsod M, Guyer DR; VEGF Inhibition Study in Ocular Neovascularization Clinical Trial Group. Pegaptanib for neovascular age-related macular degeneration. N Engl J Med. 2004 Dec 30;351(27):2805-16. doi: 10.1056/NEJMoa042760.
- Background: PubMed 21526923CATT Research Group; Martin DF, Maguire MG, Ying GS, Grunwald JE, Fine SL, Jaffe GJ. Ranibizumab and bevacizumab for neovascular age-related macular degeneration. N Engl J Med. 2011 May 19;364(20):1897-908. doi: 10.1056/NEJMoa1102673. Epub 2011 Apr 28.
- Background: PubMed 17021318Rosenfeld PJ, Brown DM, Heier JS, Boyer DS, Kaiser PK, Chung CY, Kim RY; MARINA Study Group. Ranibizumab for neovascular age-related macular degeneration. N Engl J Med. 2006 Oct 5;355(14):1419-31. doi: 10.1056/NEJMoa054481.
- Background: PubMed 17021319Brown DM, Kaiser PK, Michels M, Soubrane G, Heier JS, Kim RY, Sy JP, Schneider S; ANCHOR Study Group. Ranibizumab versus verteporfin for neovascular age-related macular degeneration. N Engl J Med. 2006 Oct 5;355(14):1432-44. doi: 10.1056/NEJMoa062655.
- Background: PubMed 16156152Rosenfeld PJ, Moshfeghi AA, Puliafito CA. Optical coherence tomography findings after an intravitreal injection of bevacizumab (avastin) for neovascular age-related macular degeneration. Ophthalmic Surg Lasers Imaging. 2005 Jul-Aug;36(4):331-5.
- Background: PubMed 16458968Avery RL, Pieramici DJ, Rabena MD, Castellarin AA, Nasir MA, Giust MJ. Intravitreal bevacizumab (Avastin) for neovascular age-related macular degeneration. Ophthalmology. 2006 Mar;113(3):363-372.e5. doi: 10.1016/j.ophtha.2005.11.019. Epub 2006 Feb 3.
- Background: PubMed 17386270Fung AE, Lalwani GA, Rosenfeld PJ, Dubovy SR, Michels S, Feuer WJ, Puliafito CA, Davis JL, Flynn HW Jr, Esquiabro M. An optical coherence tomography-guided, variable dosing regimen with intravitreal ranibizumab (Lucentis) for neovascular age-related macular degeneration. Am J Ophthalmol. 2007 Apr;143(4):566-83. doi: 10.1016/j.ajo.2007.01.028.
- Background: PubMed 12652224Iida T, Yannuzzi LA, Spaide RF, Borodoker N, Carvalho CA, Negrao S. Cystoid macular degeneration in chronic central serous chorioretinopathy. Retina. 2003 Feb;23(1):1-7; quiz 137-8. doi: 10.1097/00006982-200302000-00001.
- Background: PubMed 21055816Imamura Y, Fujiwara T, Spaide RF. Fundus autofluorescence and visual acuity in central serous chorioretinopathy. Ophthalmology. 2011 Apr;118(4):700-5. doi: 10.1016/j.ophtha.2010.08.017. Epub 2010 Nov 5.
- Background: PubMed 18356264Stewart MW, Rosenfeld PJ. Predicted biological activity of intravitreal VEGF Trap. Br J Ophthalmol. 2008 May;92(5):667-8. doi: 10.1136/bjo.2007.134874. Epub 2008 Mar 20.
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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.
David M Brown, MD principal investigator
Director Greater Houston Research
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 4 study testing aflibercept 2.0 mg in people with Age Related Macular Degeneration, run by David M. Brown, M.D. 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 19 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: finished, as of the sponsor's last update on 2 Jan 2017. 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.
What does this phase mean?
Phase 4 studies take place after a treatment is approved, to learn more about its long-term benefits and risks in everyday use.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Yes. Results are posted in the registry (first posted 2 Jan 2017). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
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?
The Number of Patients With no Fluid on OCT (time frame: 6 months). 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 NCT01543568, which also lists 16 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 2 Jan 2017.