There are more than 498,563 clinical trials published worldwide with over 60,000 trials that are currently either recruiting or not yet recruiting. Use our filters on this page to find more information on current clinical trials or past clinical trials (free or paid) for study purposes and read about their results.
Retinitis pigmentosa (RP) is an inherited retinal disease with great heterogeneity. RP comprises a large group of genetic disorders causing progressive loss of vision. Despite many suggested treatments, there is actually no effective therapy for most types of RP at present. Mutations that cause RP initially lead to rod cell death. After rod photoreceptors' death, cone photoreceptors also gradually die. There are several hypotheses as to why mutation-induced rod photoreceptor cell death invariably leads to gradual dysfunction and death of cone photoreceptors resulting in severe visual acuity loss and blindness. Rods constitute 95 percent of cells in the outer retina. As they degenerate, oxygen consumption is reduced and the level of tissue oxygen markedly increases. After rods degeneration, several markers of oxidative damage appear in cones. This oxidative stress over time may lead to cone dysfunction and death. Antioxidants reduce markers of oxidative damage and promote cone function and survival. In RP, cone death occurs as a result of the death of rods, rather than as the result of the pathogenic mutations and therefore treatment with antioxidants may have the potential to be applied to all patients with RP irrespective of the disease-causing mutation. N-acetylcysteine is a derivative of L cysteine that plays a role in the biosynthesis of glutathione and neutralizes reactive oxygen species. It also has a direct antioxidant activity via its reactive sulfhydryl agent. Its systemic use shows an acceptable safety profile. It has been shown that the use of systemic N-acetylcysteine provides significant intraocular concentration and antioxidant activity that may lead to the promotion of cone function and survival. In a recent phase 1 randomized clinical trial (RCT), it was revealed that oral N-acetylcysteine (NAC) was safe and well-tolerated in patients with moderately advanced RP and might improve sub-optimally functioning macular cones. The authors concluded that a randomized, placebo-controlled trial is needed to determine if oral NAC can provide long-term stabilization and/or improvement in visual function in patients with RP. In this phase 2 RCT, eligible patients with the diagnosis of moderately advanced RP are randomly divided into two groups; treatment group (N-acetylcysteine tablets) and controls (placebo). Each group will be treated for 6 months. In this study, we will investigate if the use of oral N- acetylcysteine as a potent antioxidant agent can slow down or reverse the disease process in RP patients with prior moderate loss of vision. It may potentially demonstrate a treatment modality regardless of the genetic type of RP. The primary outcome measure will be the stability or improvement of the best-corrected visual acuity (BCVA). The secondary outcome measures will be changes in color vision, electroretinogram, visual field, structural OCT indices after 6 months. The same parameters will be re-evaluated 3 months after discontinuation of treatment at month 9.
The purpose of the study is to assess efficacy and safety of a digital cognitive behavioural therapy for patients with pulmonary fibrosis on anxiety. The study is decentralized and participation is not limited to patients living close to the sites.
This is a single center, open-label, parallel controlled, and randomized Phase II clinical trial to evaluate the safety and immunogenicity of two types of Recombinant Novel Corona Virus Vaccine (Adenovirus type 5 vector) in population aged 6-17 years who have been previously immunized with 2 doses of inactivated COVID-19 vaccine. This is to evaluate the safety and immunogenicity of different heterologous prime-boost regimen in this population.
The ONYX study is an Open-Label, Multicenter, Extension study that will evaluate the long-term safety and efficacy of Apitegromab in Patients with Type 2 and Type 3 SMA who have completed TOPAZ or SAPPHIRE.
Reduced subjective and objective functional capacity performance are reported after COVID-19 in a large proportion of subjects. The aim of this study is to examine the feasibility and effect of using an e-health tool for guidance and tracking of exercise training in a general population of adults previously infected by COVID-19.
This study includes 3 parts: Parts A, B, and C. The purpose of this study is to evaluate the immunogenicity and safety of mRNA-1010 seasonal influenza vaccine in adults.
The aim of this study, originally named "Cross-Cultural Adaptation and Validation of the Musculoskeletal Pain Intensity and Interference Questionnaire for Musicians of the Polish Population (MPIIQM-P)" is the enlargement of validation of the Polish questionnaire.
The aim of this clinical study is to compare the efficacy of DIMS technology spectacle lenses with conventional single vision spectacle lenses at slowing the progression of myopia in the category of children and young adults during three years.
Investigators intend to utilize clinical data from the Department of Oncology at Jiangsu Provincial People's Hospital to analyze changes in body composition in digestive system tumor patients before and after receiving anti-tumor drug treatment. Investigators aim to uncover the association between baseline body composition and overall/progression-free survival in patients with digestive system tumors. Additionally, Investigators plan to investigate the relationship between changes in body composition during anti-tumor drug treatment (chemotherapy and immunotherapy) and the prognosis of tumor patients.
This randomised controlled study aimed to investigate the effectiveness of a neuromuscular training-based exercise program on pain, function, risk factors specific to shoulder injuries and performance in overhead athletes with shoulder pain. The main hypothesis is; H0: There is no difference between the "Thrower's Ten" exercise program and the neuromuscular training-based exercise program applied to overhead athletes with shoulder pain, on pain, function, risk factors specific to shoulder injuries, and performance. H1: The effects of a neuromuscular training-based exercise program on pain, function, risk factors specific to shoulder injuries and performance in overhead athletes with shoulder pain are superior to the effects of "Thrower's Ten" exercise program