ClinicalTrials.gg
CompletedNCT03811366Updated Apr 17, 2025Results posted

Multimodal Analysis and Electroretinogram in VKH From Acute Onset - Part I

An interventional study of Corticosteroid monotherapy in Uveomeningoencephalitic Syndrome, Inflammation and Choroid Disease, sponsored by University of Sao Paulo. Completed at 1 site in Brazil. Per ClinicalTrials.gov, last updated 2025-04-17.

Primary conditionChoroid DiseasesRegistry: InflammationReclassifiedWhy we changed it
Registry
Inflammation — the first condition term the registry derived for this study.
ClinicalTrials.gg
Choroid Diseases
Why
  1. Inflammation is a broad heading, used only when no more specific condition is named.
  2. The study's listed conditions name Choroid Diseases.
Confidence
High: the new condition is named in the study's own listed conditions. Of 351 hand-checked studies reclassified this way, 68% were exactly right and 84% in the right disease family; the registry's first term was right for 5% (measured 2026-10-21). How we classify →
Wrong?
Tell us the study's main condition →

Sponsored by University of Sao Paulo · Not applicable, Interventional, and Other

From the registry’s dates

  • Registered 7 years 7 months after the study started (first participant enrolled Jun 2011, registered Jan 2019).
Phase
Not applicable
Study type
Interventional
Enrollment
12
Allocation
Not applicable
Sex
All
01

Study summary

Patients with acute onset Vogt-Koyanagi-Harada disease (VKHD) were prospectively included in this study. They were systematically followed with clinical, posterior segment imaging exams and full-field electroretinogram during a minimum 24-month of follow-up. All patients were treated with 3-day methylprednisolone pulse therapy followed by 1mg/day oral prednisone with a slow tapper during a median of 13 months. Non-steroidal immunosuppressive therapy (IMT) was introduced in cases of refractory disease or in cases of prednisone intolerance. Outcome measured by full-field electroretinogram was analyzed and patient was grouped as electroretinogram stable or electroretinogram worsening. Clinical data was analyzed in these two electroretinogram-based groups.

Read the detailed description

Consecutive patients with acute onset VKHD were included and followed for a minimum 24-month as Part I of an ongoing prospective long-term study on VKHD. The main purpose was to understand the course of clinical and subclinical choroidal inflammation in patients receiving early and high-dose corticosteroid followed by high-dose oral prednisone and a very slow tapper. All patients were followed with clinical and posterior segment imaging (PSI) exams, i.e. fundus picture, fluorescein angiography, indocyanine green angiography and enhanced depth imaging optical coherence tomography, at inclusion, 1st month, and thereof every three months. Full-field electroretinogram was performed at inclusion, 1st month, and thereof every six months. Flare was defined as appearance or increase/worsening of inflammatory signs after the initial six-month from disease onset during the predefined treatment protocol. Inflammatory signs were cells in anterior chamber, macular edema; subclinical inflammatory signs were mainly those observed by PSI exams. Scotopic full-field electroretinogram results between 12 and 24 month were the main outcome. Clinical data was analyzed in the full-field electroretinogram-based groups.

02

Conditions studied

  • Uveomeningoencephalitic Syndrome
  • Inflammation
  • Choroid Disease
  • Visual Impairment

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03

In context

Choroid Diseases Reclassified

20 studies on the registry are indexed under Choroid Diseases; 7 are open to participants now.

This study's enrollment of 12 is below the median of 63 across 11 interventional studies indexed under Choroid Diseases.

Browse Choroid Diseases studies →

Lead sponsor

University of Sao Paulo is the lead sponsor of 1,035 studies on the registry; 95 are open to participants now.

Of its 8 completed or terminated interventional studies of FDA-regulated products, 0 (0%) have results posted.

Compared within Choroid Diseases, this study's primary condition as ClinicalTrials.gg classifies it; the registry's first condition term is Inflammation. The counts are of registry records indexed under each term, refreshed daily. How we classify →

04

Who can participate

Ages eligible
Child (0–17), Adult (18–64), Older adult (65+)
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • clinical diagnosis of Vogt-Koyanagi-Harada disease
  • acute onset with no previous treatment

Exclusion criteria

Exclusion Criteria:

  • non-acute VKHD
  • media opacities
05

Study design

Phase
Not applicable
Primary purpose
Other
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
12 participants (actual)

Study arms

  • Other
    Corticosteroid monotherapy

    All patients in the acute phase will be treated with corticosteroid monotherapy, unless presents a contraindication or persistence/ recurrence of inflammation with regressive corticosteroid monotherapy.This is the unique arm of the present study. Treatment protocol includes a three-day course of intravenous methylprednisolone (1000 mg per day) followed by a high dose of oral prednisone (1.0 mg/kg/day) with a slow tapering with dose equal or less than 0.1mg/kg/day after 10 months. The prednisone dose is scheduled to be reduced in a 0.1 mg/kg-step ladder until it reaches 0.3 mg/kg (i.e. for an individual with 60 kg, dose would be 20 mg): from 1 to 0.8 mg/kg every two to three weeks; at 0.7 mg/kg for 4 weeks; at 0.6 mg/kg for two to three weeks; from 0.5 mg/kg every 4 weeks; from 0.3 to 0.15 mg/kg every 6 weeks; and 0.1 mg/kg, 0.075 mg/kg and 0.05 mg/kg for 8 weeks each.

    Drug: Corticosteroid monotherapy

Interventions

  • DrugCorticosteroid monotherapy

    Patients will receive corticosteroid monotherapy as a pulsetherapy (1000mg/ day for 3 days) followed by oral corticosteroid.

    Also known as: Prednisone arm, Corticosteroid pulsetherapy arm, Methilprednisolone arm

06

What researchers measure

Primary outcomes

  1. Median Values of ERG Scotopic Parameters at 12-month

    Full-field electroretinogram (ERG) scotopic parameters were evaluated at 12 -month (scotopic parameters: amplitude of scotopic a and b wave, amplitude of maximum scotopic a and b wave, oscillatory potential).

    Time frame: assessed at 12-month

  2. Median Values of ERG Scotopic Parameters at 24-month

    Full-field electroretinogram (ERG) scotopic parameters were evaluated at 24 -month (scotopic parameters: amplitude of scotopic a and b wave, amplitude of maximum scotopic a and b wave, oscillatory potential).

    Time frame: assessed at 24-month

  3. Variation (Worsening or Improvement) Between 24 and 12 Months of ERG Scotopic Parameters Comparing 24 and 12-months

    Full-field electroretinogram (ERG) scotopic parameters at 12 and 24 months were compared (scotopic parameters: amplitude of scotopic a and b wave, amplitude of maximum scotopic a and b wave, oscillatory potential). The worsening of the ERG parameters was defined as a value reduction of ≥ 30 % in any these scotopic ERG parameters at month 12 and month 24. We report the change between the (value at month 24/ the value at month 12)\*100.

    Time frame: 12 and 24-months

Secondary outcomes

  1. Recurrence or Worsening of Cells in Anterior Chamber

    Evaluation of anterior chamber (AC) cells was performed at visits 6 months, 12 months, 18 months and 24 months from disease onset, according to the Standardization of Uveitis Nomenclature´s classification of anterior chamber cells. (Am J Ophthalmol, 2005) Any step increase (fluctuation), when comparing sequential dates of follow up (e.g 6 and 12 months) were considered as one episode of clinical worsening in AC cells

    Time frame: 6 to 24 months from disease onset.

  2. Increase in the Score of Dark Dots on Indocyanine Green Angiography

    Dark dots scores had a maximum value of 8, any increase of 0.5 after 6 months from disease onset will be considered (Int Ophthalmo 2010) Dark dots Score based on pattern of distribution (Sparse/ Numerous) Minimum: 0 (better outcome) Maximum: 8 (worse outcome)

    Time frame: 6 to 24 months from disease onset

  3. Change in Subfoveal Choroidal Thickness on Enhanced Depth Optical Coherence Tomography

    Increase of 30% or more in choroidal thickness EDI in consecutive exams on horizontal scan

    Time frame: 6 to 24 months from disease onset

  4. Change in Perivascular Leakage on Fluorescein Angiography

    Perivascular leakage was observed as an increase in hyperfluorescence around retinal vasculature over time on FA exam at midperiphery.

    Time frame: 6 to 24 months after disease onset

  5. Choroidal Neovascularization

    Choroidal neovascularization was diagnosed when increasingly localized hyperfluorescence at the posterior pole is detected on FA or a hyperreflective subretinal lesion associated with sub or intraretinal fluid on OCT.

    Time frame: 6 to 24 months after disease onset

  6. Cataract

    Cataract was defined as any lens opacification greater than nuclear or cortical 2+/4 or subcapsular 1+/4

    Time frame: 6 to 24 months after disease onset

  7. Ocular Hypertension

    Ocular hypertension was defined as an intraocular pressure (IOP) above 21mmHg

    Time frame: 6 to 24 months after disease onset

07

Results

Posted Nov 22, 2024

Participant flow

Date of recruitment: June, 2011 through January, 2017 Location: Ophthalmology service -Hospital das Clínicas da Universidade São Paulo

Participant flow — Overall Study
MilestoneCorticosteroid Monotherapy
Started12
Completed12
Not completed0

Outcome measures

PrimaryMedian Values of ERG Scotopic Parameters at 12-month

Full-field electroretinogram (ERG) scotopic parameters were evaluated at 12 -month (scotopic parameters: amplitude of scotopic a and b wave, amplitude of maximum scotopic a and b wave, oscillatory potential).

Time frame:
assessed at 12-month
Reported as:
Median · microvolts
Median Values of ERG Scotopic Parameters at 12-month
microvoltsCorticosteroid Monotherapy
Scotopic b amplitude201 (104 to 352)
Maximum scotopic a amplitude210 (134 to 336)
Maximum scotopic b amplitude508 (328 to 728)
Oscillatory potential92 (48 to 272)
Photopic a amplitude42 (23 to 63)
Photopic B amplitude202 (87 to 312)
Flicker52 (24 to 89)
Statistical analysis
  • Corticosteroid Monotherapy · generalized estimated equation · p = <0.001 (significance when p\<0;05)generalized estimated equation with normal distribution and logarithmic link function
PrimaryMedian Values of ERG Scotopic Parameters at 24-month

Full-field electroretinogram (ERG) scotopic parameters were evaluated at 24 -month (scotopic parameters: amplitude of scotopic a and b wave, amplitude of maximum scotopic a and b wave, oscillatory potential).

Time frame:
assessed at 24-month
Reported as:
Median · microvolts
Median Values of ERG Scotopic Parameters at 24-month
microvoltsCorticosteroid Monotherapy
Scotopic b amplitude189 (130 to 380)
Maximum scotopic a amplitude189 (120 to 317)
Maximum scotopic b amplitude484 (336 to 789)
Oscillatory potential114 (35 to 259)
Photopic a amplitude43 (23 to 66)
Photopic B amplitude186 (111 to 345)
Flicker54 (29 to 85)
PrimaryVariation (Worsening or Improvement) Between 24 and 12 Months of ERG Scotopic Parameters Comparing 24 and 12-months

Full-field electroretinogram (ERG) scotopic parameters at 12 and 24 months were compared (scotopic parameters: amplitude of scotopic a and b wave, amplitude of maximum scotopic a and b wave, oscillatory potential). The worsening of the ERG parameters was defined as a value reduction of ≥ 30 % in any these scotopic ERG parameters at month 12 and month 24. We report the change between the (value at month 24/ the value at month 12)\*100.

Time frame:
12 and 24-months
Reported as:
Number · percentage of change on ERG parameters
Variation (Worsening or Improvement) Between 24 and 12 Months of ERG Scotopic Parameters Comparing 24 and 12-months
percentage of change on ERG parametersERG Stable GroupERG Worsening Group
Scotopic b amplitude9.5-32.9
Maximum scotopic a amplitude7-21.4
Maximum scotopic b amplitude2.8-10.8
Oscillatory potential5.9-47.1
Photopic a amplitude0-5
Photopic b amplitude2.4-13.6
Flicker6.2-6.9
SecondaryRecurrence or Worsening of Cells in Anterior Chamber

Evaluation of anterior chamber (AC) cells was performed at visits 6 months, 12 months, 18 months and 24 months from disease onset, according to the Standardization of Uveitis Nomenclature´s classification of anterior chamber cells. (Am J Ophthalmol, 2005) Any step increase (fluctuation), when comparing sequential dates of follow up (e.g 6 and 12 months) were considered as one episode of clinical worsening in AC cells

Time frame:
6 to 24 months from disease onset.
Reported as:
Count of units · eyes
Recurrence or Worsening of Cells in Anterior Chamber
eyesERG Stable GroupERG Worsening Group
Recurrence or Worsening of Cells in Anterior Chamber80
Statistical analysis
  • ERG Stable Group vs ERG Worsening Group · Fisher Exact · p = 0.054 (significance when p\<0.05)
SecondaryIncrease in the Score of Dark Dots on Indocyanine Green Angiography

Dark dots scores had a maximum value of 8, any increase of 0.5 after 6 months from disease onset will be considered (Int Ophthalmo 2010) Dark dots Score based on pattern of distribution (Sparse/ Numerous) Minimum: 0 (better outcome) Maximum: 8 (worse outcome)

Time frame:
6 to 24 months from disease onset
Reported as:
Number · eyes
Increase in the Score of Dark Dots on Indocyanine Green Angiography
eyesERG Stable GroupERG Worsening-group
Increase in the Score of Dark Dots on Indocyanine Green Angiography175
Statistical analysis
  • ERG Stable Group · generalized estimated equation · p = 0.478 (17 eyes presented dark dots fluctuation during follow up in stable ERG group when compared to 5 eyes in worsening ERG group.)Generalized estimated equation with Poisson distribution and identity link function supposing an interchangeable correlation matrix between the eyes
SecondaryChange in Subfoveal Choroidal Thickness on Enhanced Depth Optical Coherence Tomography

Increase of 30% or more in choroidal thickness EDI in consecutive exams on horizontal scan

Time frame:
6 to 24 months from disease onset
Reported as:
Count of units · eyes
Change in Subfoveal Choroidal Thickness on Enhanced Depth Optical Coherence Tomography
eyesERG Stable GroupERG Worsening-group
Change in Subfoveal Choroidal Thickness on Enhanced Depth Optical Coherence Tomography84
SecondaryChange in Perivascular Leakage on Fluorescein Angiography

Perivascular leakage was observed as an increase in hyperfluorescence around retinal vasculature over time on FA exam at midperiphery.

Time frame:
6 to 24 months after disease onset
Reported as:
Count of units · eyes
Change in Perivascular Leakage on Fluorescein Angiography
eyesERG Stable GroupERG Worsening Group
Change in Perivascular Leakage on Fluorescein Angiography94
Statistical analysis
  • ERG Stable Group · Generalized estimated equation · p = 0.936Generalized estimated equation with binomial distribution and logit link function, supposing an interchangeable correlation matrix between the eyes;
SecondaryChoroidal Neovascularization

Choroidal neovascularization was diagnosed when increasingly localized hyperfluorescence at the posterior pole is detected on FA or a hyperreflective subretinal lesion associated with sub or intraretinal fluid on OCT.

Time frame:
6 to 24 months after disease onset
Reported as:
Number · eyes
Choroidal Neovascularization
eyesERG Stable GroupERG Worsening Group
Choroidal Neovascularization21
Statistical analysis
  • ERG Stable Group vs ERG Worsening Group · Generalized estimated equation · p = 0.853 (significance when p\<0.05)Generalized estimated equation with binomial distribution and logit link function, supposing an interchangeable correlation matrix between the eyes;
SecondaryCataract

Cataract was defined as any lens opacification greater than nuclear or cortical 2+/4 or subcapsular 1+/4

Time frame:
6 to 24 months after disease onset
Reported as:
Number · eyes
Cataract
eyesERG Stable GroupERG Worsening Group
Cataract50
Statistical analysis
  • ERG Stable Group vs ERG Worsening Group · Fisher Exact · p = 0.272 (significance when p\<0.05)
SecondaryOcular Hypertension

Ocular hypertension was defined as an intraocular pressure (IOP) above 21mmHg

Time frame:
6 to 24 months after disease onset
Reported as:
Number · eyes
Ocular Hypertension
eyesERG Stable GroupERG Worsening Group
Ocular Hypertension75
Statistical analysis
  • ERG Stable Group vs ERG Worsening Group · Generalized estimated equation with bino · p = 0.983 (significance when p\<0.05)Generalized estimated equation with binomial distribution and logit link function, supposing an interchangeable correlation matrix between the eyes

Adverse events

Collected over 12 and 24 months. Non-serious events are listed at a 2% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Corticosteroid Monotherapy0/12 (0%)0/12 (0%)6/12 (50%)
Most frequent other events
Most frequent other events
EventCorticosteroid Monotherapy
Weight gainGeneral disorders4/12
Psychosis/ depressionPsychiatric disorders2/12

Baseline characteristics

Study of clinical, subclinical and electroretinographic outcomes of patients with acute Vogt-Koyanagi-Harada disease treated with corticosteroid monotherapy

Age, Categorical
Age, Categorical(Participants)Corticosteroid Monotherapy
<=18 years1
Between 18 and 65 years10
>=65 years1
Age, Continuous
Age, Continuous(years)Corticosteroid Monotherapy
Median31 (15 to 67)
Sex: Female, Male
Sex: Female, Male(Participants)Corticosteroid Monotherapy
Female10
Male2
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Corticosteroid Monotherapy
American Indian or Alaska Native0
Asian1
Native Hawaiian or Other Pacific Islander0
Black or African American0
White0
More than one race11
Unknown or Not Reported0
Region of Enrollment
Region of Enrollment(participants)Corticosteroid Monotherapy
Brazil12
08

Study locations

1 site
  • Hospital das Clinicas HCFMUSP, Faculdade de Medicina Universidade de Sao Paulo
    São Paulo, SP 05403-000, Brazil
09

References and documents

Publications

  • Du L, Kijlstra A, Yang P. Vogt-Koyanagi-Harada disease: Novel insights into pathophysiology, diagnosis and treatment. Prog Retin Eye Res. 2016 May;52:84-111. doi: 10.1016/j.preteyeres.2016.02.002. Epub 2016 Feb 11. PubMed 26875727 ↗
  • Lavezzo MM, Sakata VM, Morita C, Rodriguez EE, Abdallah SF, da Silva FT, Hirata CE, Yamamoto JH. Vogt-Koyanagi-Harada disease: review of a rare autoimmune disease targeting antigens of melanocytes. Orphanet J Rare Dis. 2016 Mar 24;11:29. doi: 10.1186/s13023-016-0412-4. PubMed 27008848 ↗
  • Rao NA. Pathology of Vogt-Koyanagi-Harada disease. Int Ophthalmol. 2007 Apr-Jun;27(2-3):81-5. doi: 10.1007/s10792-006-9029-2. Epub 2007 Apr 14. PubMed 17435969 ↗
  • Rubsamen PE, Gass JD. Vogt-Koyanagi-Harada syndrome. Clinical course, therapy, and long-term visual outcome. Arch Ophthalmol. 1991 May;109(5):682-7. doi: 10.1001/archopht.1991.01080050096037. PubMed 2025171 ↗
  • Herbort CP Jr, Abu El Asrar AM, Takeuchi M, Pavesio CE, Couto C, Hedayatfar A, Maruyama K, Rao X, Silpa-Archa S, Somkijrungroj T. Catching the therapeutic window of opportunity in early initial-onset Vogt-Koyanagi-Harada uveitis can cure the disease. Int Ophthalmol. 2019 Jun;39(6):1419-1425. doi: 10.1007/s10792-018-0949-4. Epub 2018 Jun 11. PubMed 29948499 ↗
  • Yang P, Fang W, Wang L, Wen F, Wu W, Kijlstra A. Study of macular function by multifocal electroretinography in patients with Vogt-Koyanagi-Harada syndrome. Am J Ophthalmol. 2008 Nov;146(5):767-71. doi: 10.1016/j.ajo.2008.05.044. Epub 2008 Jul 30. PubMed 18672226 ↗
  • Chee SP, Jap A, Bacsal K. Spectrum of Vogt-Koyanagi-Harada disease in Singapore. Int Ophthalmol. 2007 Apr-Jun;27(2-3):137-42. doi: 10.1007/s10792-006-9009-6. Epub 2006 Nov 11. PubMed 17103022 ↗
  • Yuan W, Zhou C, Cao Q, Du Z, Hu R, Wang Y, Kijlstra A, Yang P. Longitudinal Study of Visual Function in Vogt-Koyanagi-Harada Disease Using Full-Field Electroretinography. Am J Ophthalmol. 2018 Jul;191:92-99. doi: 10.1016/j.ajo.2018.04.013. Epub 2018 Apr 25. PubMed 29702075 ↗
  • Chee SP, Luu CD, Cheng CL, Lim WK, Jap A. Visual function in Vogt-Koyanagi-Harada patients. Graefes Arch Clin Exp Ophthalmol. 2005 Aug;243(8):785-90. doi: 10.1007/s00417-005-1156-3. Epub 2005 Mar 11. PubMed 15761760 ↗
  • da Silva FT, Hirata CE, Olivalves E, Oyamada MK, Yamamoto JH. Fundus-based and electroretinographic strategies for stratification of late-stage Vogt-Koyanagi-Harada disease patients. Am J Ophthalmol. 2009 Dec;148(6):939-45.e3. doi: 10.1016/j.ajo.2009.06.029. Epub 2009 Sep 24. PubMed 19781687 ↗
  • Tugal-Tutkun I, Herbort CP, Khairallah M; Angiography Scoring for Uveitis Working Group (ASUWOG). Scoring of dual fluorescein and ICG inflammatory angiographic signs for the grading of posterior segment inflammation (dual fluorescein and ICG angiographic scoring system for uveitis). Int Ophthalmol. 2010 Oct;30(5):539-52. doi: 10.1007/s10792-008-9263-x. Epub 2008 Sep 16. PubMed 18795232 ↗
  • Nakayama M, Keino H, Watanabe T, Okada AA. Clinical features and visual outcomes of 111 patients with new-onset acute Vogt-Koyanagi-Harada disease treated with pulse intravenous corticosteroids. Br J Ophthalmol. 2019 Feb;103(2):274-278. doi: 10.1136/bjophthalmol-2017-311691. Epub 2018 Apr 17. PubMed 29666121 ↗
  • Kawaguchi T, Horie S, Bouchenaki N, Ohno-Matsui K, Mochizuki M, Herbort CP. Suboptimal therapy controls clinically apparent disease but not subclinical progression of Vogt-Koyanagi-Harada disease. Int Ophthalmol. 2010 Feb;30(1):41-50. doi: 10.1007/s10792-008-9288-1. Epub 2009 Jan 17. PubMed 19151926 ↗
  • Herbort CP Jr, Abu El Asrar AM, Yamamoto JH, Pavesio CE, Gupta V, Khairallah M, Tugal-Tutkun I, Soheilian M, Takeuchi M, Papadia M. Reappraisal of the management of Vogt-Koyanagi-Harada disease: sunset glow fundus is no more a fatality. Int Ophthalmol. 2017 Dec;37(6):1383-1395. doi: 10.1007/s10792-016-0395-0. Epub 2016 Nov 14. PubMed 27844182 ↗
  • Abu El-Asrar AM, Dosari M, Hemachandran S, Gikandi PW, Al-Muammar A. Mycophenolate mofetil combined with systemic corticosteroids prevents progression to chronic recurrent inflammation and development of 'sunset glow fundus' in initial-onset acute uveitis associated with Vogt-Koyanagi-Harada disease. Acta Ophthalmol. 2017 Feb;95(1):85-90. doi: 10.1111/aos.13189. Epub 2016 Aug 18. PubMed 27535102 ↗

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

10

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Jun 2011 to primary completion in Jan 2017, 67 months.

Results were first posted in Nov 2024, 7 years 9 months after primary completion.

How these figures are worked out, and which studies are left out of them.

Registered
Jan 10, 2019
First posted
Jan 22, 2019
StartActual
Jun 1, 2011
Primary completionActual
Jan 31, 2017
CompletionActual
Jan 31, 2017
Results first posted
Nov 22, 2024
Last update
Apr 17, 2025
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Apr 17, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT03811366
Responsible party
Joyce Hisae Yamamoto (Clinical Professor, person-in-charge of Uveitis Service, University of Sao Paulo) — Principal investigator
First posted
Jan 22, 2019
Start date
Jun 1, 2011
Primary completion
Jan 31, 2017
Completion
Jan 31, 2017
Results posted
Nov 22, 2024
Last update
Apr 17, 2025

Study contacts

Joyce H Yamamoto, PhD
principal investigator · Universidade São Paulo

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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