Retinitis Pigmentosa Clinical Trials

Browse current & upcoming clinical research / studies on Retinitis Pigmentosa. There are a total of 52 clinical trials for Retinitis Pigmentosa in 15 countries with 7 trials currently in the United States. 16 are either active and/or recruiting patients or have not yet been completed. Click the title of each study to get the complete details on eligibility, location & other facts about the study.

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Interventional trials
Determine whether experimental treatments or new ways of using known therapies are safe and effective under controlled environments.
Observational trials
Address health issues in large groups of people or populations in natural settings.
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Participants are being (or will be) selected from a predetermined population.
The study has concluded normally; participants are no longer being examined or treated (i.e., last patient's last visit has occurred).
Study halted prematurely, prior to enrollment of first participant.
Recruiting or enrolling participants has halted prematurely but potentially will resume.
Recruiting or enrolling participants has halted prematurely and will not resume; participants are no longer being examined or treated.
November 2014 - October 2016
Objectives: To study the immediate effect and the persistent effect of Lycium barbarum (LB) treatment on retinal functions, especially the cone function, and retinal structure in patients with retinitis pigmentosa (RP) Design: Randomised controlled double-masked trial Setting: Primary Care clinical trial Participants: 120 RP subjects will be recruited from Ophthalmology department at The University of Hong Kong and the Retina Hong Kong. Interventions: Subjects will be randomly allocated to LB (treated with LB granules) or control (treated with placebo) groups for 1 year. After the 1st year, both groups will stop the treatment and all subjects will also have the same eye exam in 6-month period for the 2nd year. Main outcome measures: The primary outcome is the total sensitivity scores of 30-2 & 60-4 programmes of HVFA. The secondary outcomes are the b-wave amplitudes of ffERG responses, the amplitudes of direct component and induced component of mfERG, and the ETDRS visual acuity. Results: Lycium barbarum treatment provides the immediate effect and the persistent effect on retinal functions and structure in patients with retinitis pigmentosa to improve the cone activity. It does not cause any harmful effect to the subjects. Conclusion: Cone rescue is an alternative approach to save the vision for RP patients. The result of this study will provide valuable information for the treatment of RP. The antioxidative effect of LB is believed to delay or minimize the cone degeneration in RP and the intake of LB will be a very economic way in the RP treatment.
Sponsor: The Hong Kong Polytechnic University
Study type: Interventional
November 2014 - August 2016
The purpose of this study is to evaluate the safety of intravitreal injection of autologous bone marrow stem cells in patients with retinitis pigmentosa by a prospective, single-center, randomized, parallel, double-blind, phase I placebo-controlled clinical trial.
Sponsor: Red de Terapia Celular
Study type: Interventional
September 2014 - November 2016
Retinitis pigmentosa is an eye disease in which there is damage to the retina. The retina is the layer of tissue at the back of the inner eye that converts light images to nerve signals and sends them to the brain.Autologous Bone Marrow derived Mono Nuclear Stem Cell (BMMNCs) is used for this condition .
Sponsor: Chaitanya Hospital, Pune
Study type: Interventional
May 2014 - May 2016
Background: - Some people with retinitis pigmentosa (RP) have macular edema (swelling) in the central retina. This can cause decreased central vision. The cause of macular edema is unknown, but may involve inflammation. The drug minocycline might help prevent inflammation and therefore might help treat macular edema and improve central visual function . Objectives: - To see if minocycline helps people with RP.and macular edema. Eligibility: - People 12 years and older with RP who have macular edema in at least on eye. Design: - Participants will be screened with medical and eye disease history. They will have an eye exam and blood tests. One eye with macular edema will be the study eye. If both eyes are affected, one will be designated the study eye. - Participants will visit the clinic at least 9 times over at least 14 months. The first 3 study visits will be monthly, then every 2 months. - Participants will start taking minocycline after visit 3. They will take 1 pill twice daily for at least 1 year. - Participants will keep a medicine diary and bring it to each visit with their pill bottle and unused pills. - At each study visit, participants will have some or all of the following tests: - eye and thyroid exams - blood and pregnancy tests - microperimetry: participants will press a button when they see a light on a computer screen - visual field measurement: participants will look at spots on a white screen to test side vision - electroretinogram: A person will be dark adapted by sitting in the dark for 30 minutes. After the placement of numbing eye drops, special contact lenses will be placed . The participant will watch flashing lights and recordings will be made.
Sponsor: National Institutes of Health Clinical Center (CC)
Study type: Interventional
March 2014 - December 2014
Retinitis pigmentosa (RP) is a slowly progressive retinal degeneration for which there is no proven treatment. Patients are interested in trying alternative therapies to try to reduce their vision loss, but only limited research evidence exists to support their use and potential benefit. The goal of this research project is to gain a better understanding of possible changes in ocular and retinal blood flow and measures of vision in RP patients receiving two promising therapies, electroacupuncture and transcorneal electrical stimulation.
Sponsor: Nova Southeastern University
Study type: Interventional
January 2014 - January 2017
The Argus II Retinal Implant is a revolutionary new device, which offers vision to patients who are blind from retinal degeneration - retinitis pigmentosa. These patients have no alternatives. Patients typically can achieve ambulatory vision.
Sponsor: University Health Network, Toronto
Study type: Observational
January 2014 -
This post-approval study is being implemented to monitor the use of Argus II System in a larger US population than available within pre-approval studies. An attempt will be made to include all eligible and willing subjects implanted with Argus II System in the United States. Safety data will be monitored to ensure continued acceptability of risks to study subjects. The utility (i.e. visual function and functional vision) and reliability of Argus II System will also be evaluated. There is no study hypothesis.
Sponsor: Second Sight Medical Products
Study type: Observational
January 2014 - April 2015
The primary objective of the study is to assess the safety and tolerability of two dose regimens of recombinant human nerve growth factor (rhNGF) eye drops solution administered over 6 months versus a vehicle control in patients with typical retinitis pigmentosa. The secondary objective of this study is to attempt to show a dose response by assessing the potential efficacy of the rhNGF dose regimens for improving or slowing the deterioration of visual function outcomes at 3 and 6 months. During a 6 month follow-up period patients will be monitored to determine if there is evidence of a persistent biological effect after discontinuation of the study treatment.
Sponsor: Dompé s.p.a.
Study type: Interventional
June 2013 - July 2014
Vision testing is a fundamental part of every optometry and ophthalmology assessment. Traditional vision testing charts are not able to measure vision below a certain level. Vision in this range is classified as counting fingers (CF), hand movements (HM) and light perception (LP). These measures are not very accurate or easily quantifiable. They are also poorly understood in terms of impact on quality of life. This study aims to assess new methods for measuring the vision of patients with very low vision.
Sponsor: University of Oxford
Study type: Observational
April 2013 - February 2015
Retinitis pigmentosa (RP) is a progressive degenerative disease of the retina, which often leads to blindness. 1 in 4000 people in the UK are affected by RP yet there is no established therapy for treating or delaying its progression. Transcorneal electrical stimulation (TES) has garnered attention as a possible therapeutic option for RP. Research has shown that TES improves retinal cell viability and visual function. An initial pilot study of TES on 24 participants with RP demonstrated that it was safe and improved vision. This study aims to confirm the safety of the new CE-approved Okustim device and to further characterise the benefits of TES on a larger scale. 12 participants will be enrolled for 1 year across two sites in the UK - the Oxford Eye Hospital and London Moorfields Eye Hospital. Recruited participants will undergo weekly TES of 1 eye for 30 minutes for a period of 6 months. This will be followed by a further 6 months of observation without stimulation giving a total participation time of 1 year. Participants will be assessed at 3, 6, 9 and 12 months after their initial baseline visit by clinical examination, investigations and questionnaires. Participants should have a diagnosis of RP and be capable of giving consent. Participants, or a carer, should have sufficient motor skills to attach the device themselves. As this study seeks to ascertain the impact of TES on RP, participants with other eye diseases (e.g. diabetic retinopathy) cannot be included in the study.
Sponsor: University of Oxford
Study type: Interventional
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