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Eplerenone for Central Serous Chorioretinopathy

Straipsnius versti gali tik registruoti vartotojai
Prisijungti Registracija
Nuoroda įrašoma į mainų sritį
StatusasBaigta
Rėmėjai
Tufts Medical Center

Raktažodžiai

Santrauka

- The goal of the study is to examine the short-term effects and safety of a systemic anti-aldosterone medication, eplerenone, in a small group of patients with central serous chorioretinopathy (CSCR).
- There is currently no standard treatment or therapy for either acute or chronic CSCR, a potentially debilitating eye disease.
- There is evidence in both animals and humans that high blood serum corticosteroid levels can cause or worsen CSCR or findings similar to CSCR in the choroid and retina
- Eplerenone, a mineralocorticoid receptor antagonist, has been shown to be of visual and anatomic benefit in a small series of 4 patients with chronic CSCR, suggesting that decreasing mineralocorticoid action in the eye may improve signs and symptoms of CSCR
- The investigators' aim is to evaluate a standardized dose of eplerenone in a controlled prospective fashion for both acute and chronic CSCR.
- The study consists of taking a standard dose of eplerenone, 50mg once daily, for 1 month
- Over the course of the month, patients will be monitored for side effects, as well as visual and anatomical response to the medication

apibūdinimas

- The investigators hypothesize that aldosterone inhibition with eplerenone will decrease choroidal vessel vasodilation, focal leakage, and choroidal thickness in patients with both acute and chronic CSCR, leading to resolution of subretinal fluid and ultimately an improvement in symptoms.

- Resolution of sub-retinal fluid will be the primary outcome, which can be precisely measured using optical coherence tomography (OCT)

- Secondary outcomes will include: Change in macular thickness measured with OCT, in central macular circle thickness on OCT, change in visual acuity, change in dye leakage characteristics on fluorescein angiography, change in OCT characteristics of the fellow eye, and safety and tolerability characteristics

- In acute CSCR, subretinal fluid often resolves on its own, but it often takes several months (the literature shows that ~20% of patients have complete resolution of sub-retinal fluid on OCT 1 month after presentation)

- Chronic CSCR is defined as persistent fluid on OCT after 3 months of symptom onset, or recurrence of signs and symptoms within 1 year after the prior episode

- In this study, the investigators will not make a distinction between acute and chronic CSCR

- Eplerenone, a generic medication, is a potassium sparing diuretic, which is FDA approved to treat heart failure as well as high blood pressure, but is not FDA approved for treatment of central serous chorioretinopathy.

- The most important side effect of eplerenone is elevation of serum potassium and decrease of blood pressure

- Patients will therefore be screened with routine blood tests as suggested by the package insert of the medication, and serum potassium and blood pressure will be monitored routinely as directed by the medication package insert

- Study visits will be performed at therapy initiation, 1 week, 2 weeks, and 4 weeks

Datos

Paskutinį kartą patikrinta: 03/31/2018
Pirmasis pateikimas: 03/24/2013
Numatytas registravimas pateiktas: 03/31/2013
Pirmas paskelbtas: 04/01/2013
Paskutinis atnaujinimas pateiktas: 04/16/2018
Paskutinis atnaujinimas paskelbtas: 05/15/2018
Pirmųjų rezultatų pateikimo data: 04/16/2018
Pirmojo QC rezultatų pateikimo data: 04/16/2018
Pirmųjų paskelbtų rezultatų data: 05/15/2018
Faktinė studijų pradžios data: 04/30/2013
Numatoma pirminio užbaigimo data: 03/31/2017
Numatoma studijų užbaigimo data: 11/30/2017

Būklė ar liga

Central Serous Chorioretinopathy

Intervencija / gydymas

Drug: Eplerenone

Fazė

Fazė 2

Rankų grupės

RankaIntervencija / gydymas
Experimental: Eplerenone
All patients in this study will receive Eplerenone 50mg once daily for 4 weeks.
Drug: Eplerenone
All patients will receive the same dose of eplerenone.

Tinkamumo kriterijai

Amžius, tinkami studijuoti 18 Years Į 18 Years
Tinkamos studijoms lytysAll
Priima sveikus savanoriusTaip
Kriterijai

Inclusion Criteria:

1. Age 18 or over

2. Ability to give written informed consent

3. Presence of sub-retinal fluid under the fovea as seen on OCT

4. Diagnosis of Acute or Chronic CSCR:

- Acute CSCR: First presentation to eye clinic with visual symptoms, including decreased vision or visual distortion, and the characteristic appearance of CSCR on examination, fluorescein angiography, and OCT.

- Chronic CSCR: Previous diagnosis of CSCR, persistent subretinal fluid on OCT for more than 3 months after initial presentation to the eye clinic, and <50% reduction in fluid thickness on OCT after 3 months. Patients who have had previous treatment for CSCR may be included.

Exclusion Criteria:

1. Age less than 18

2. Persons with impaired decision-making ability.

3. Women who are known to be pregnant or are actively trying to conceive.

4. Additional eye disease affecting the macula or posterior retina.

5. At screening, serum potassium concentration ≥5.0 mEq/L , a serum creatinine concentration >2 mg/dL in men and >1.8 mg/dL in women, or a creatinine clearance <50 mL/min, and during concomitant administration of potassium supplements, potassium-sparing diuretics, and/or potent CYP3A4 inhibitors (amifostine, cyclosporine, fluconazole, itraconazole, ketoconazole, mifepristone, posaconazole, potassium salts, Rituximab, tacrolimus or voriconazole).

6. Patients with type 2 diabetes will be screened for microalbuminuria with a urinalysis. If microalbuminuria is present, these patients will be excluded.

Rezultatas

Pirminės rezultatų priemonės

1. Complete Resolution of Subretinal Fluid [Baseline and 1 month after treatment]

Optical coherence tomography is an imaging technique capable of extremely high resolution (~5-7 microns) imaging of the macula, and is able to detect the presence and amount of subretinal fluid present, the key anatomic abnormality in Central Serous Chorioretinopathy

Antrinės rezultatų priemonės

1. Change in Macular Thickness [Baseline and 1 month after treatment]

Automated software to calculate the thickness of the macula is standard on commercial OCT devices. Macular thickness before and after treatment will be assessed and compared.

2. Change in Best Corrected Visual Acuity [Baseline and 1 month after treatment]

Visual acuity will be measured with standard eye charts, with manifest refraction at the initiation and conclusion of treatment. Although an important measure, this was not chosen as the primary outcome measure, as some patients with central serous chorioretinopathy may have a normal visual acuity when properly refracted (refraction can change with elevation of the macula by sub-retinal fluid)

3. Change in Subfoveal Choroidal Thickness, Study Eye [Baseline and 1 month after treatment]

Choroidal thickness can be measured using optical coherence tomography, and is known to be affected in patients with central serous chorioretinopathy. Thickness of the choroid under the fovea will be manually calculated in both the study eye.

4. Change in Serum Potassium [Baseline and 1 month after treatment]

Eplerenone can cause elevation of serum potassium. After initial screening, serum potassium was evaluated at 1 and 4 weeks after baseline.

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