Active clinical trials for "Protoporphyria, Erythropoietic"

This is a randomized placebo-controlled study to be conducted in two parallel study arms for a six month period (three doses). Approximately 10 eligible patients per center will be enrolled and will receive afamelanotide (16 mg implants) or placebo according to the following dosing regimen: Group A will be administered afamelanotide implants on Days 0, 60 and 120 Group B will be administered placebo implants on Days 0, 60 and 120 To determine eligibility for study inclusion, patients will undergo a screening evaluation 7 to 14 days prior to the administration of the first dose. The number and severity of phototoxic reactions will be determined Days 60, 120, and 180. Quality of life will be measured using the EPP specific questionnaire (EPP-QoL) every 60 days and the DLQI questionnaire every 7 days, beginning at Day 0 until Day 180. Participants will visit the clinic on Days 60, 120 and 180 for assessments of adverse events.

OBJECTIVES: I. Determine the efficacy of cysteine hydrochloride in preventing or decreasing photosensitivity in patients with erythropoietic protoporphyria.

The purpose of this study is to investigate the efficacy and safety of MT-7117 on sunlight exposure duration without symptoms and tolerance in subjects with EPP.

OBJECTIVES: I. Determine the long-term efficacy and safety of L-cysteine in the prevention photosensitivity in patients with erythropoietic protoporphyria.

In the medical literature there are conflicting reports on whether iron improves symptoms in patients with EPP and XLP. Giving iron to people who are iron deficient is thought to improve EPP symptoms. However, this has never been systematically tested. Therefore, the purpose of this study is to determine the effect of oral iron for EPP and XLP patients.

The investigators demonstrated that cholestyramine is an effective binding agent in vitro for porphyrins. A few isolated case reports of treatment of individuals with a cutaneous porphyria suggest that cholestyramine and colestipol effectively remove porphyrins. Hypothesis: orally administered colestipol will effectively reduce sun sensitivity and lower erythrocyte porphyrin concentrations in subjects with erythropoietic protoporphyria (EPP).

Afamelanotide is a man-made drug being studied for use as a preventative medication for EPP sufferers. It is a synthetically produced analogue of human alpha melanocyte stimulating hormone (alpha-MSH) and is not yet available on the market. The purpose of this study is to look at whether afamelanotide can reduce the number and severity of EPP symptoms when patients are exposed to light. This study will also look at how the drug is tolerated when taken by people with EPP. The study will involve the use of an implant, which comes in the form of a small rod (approximately 2 cm x 0.15 cm) to be administered under the skin. The implant may contain the study drug afamelanotide or a placebo (inactive medication). Over 450 subjects have been treated with afamelanotide to date with no serious safety concerns identified. For this study, afamelanotide has been formulated as a controlled release depot injection (implant). This means that the afamelanotide will be released slowly into the body over a few days. Once inserted, the implant will remain in the body after afamelanotide has been released and will slowly dissolve. This study will help to provide more information about afamelanotide. This information will be used to determine the safety and efficacy (the ability of the drug to produce an effect) of this drug in EPP sufferers. Up to 70 people will participate in this study from study sites across Europe.

Giving oral iron to patients with erythropoietic protoporphyria (EPP) who is iron deficient is thought to be beneficial. This is, however, not well documented. The purpose of this study is to investigate the effect and safety of oral iron in patients with EPP who is taking iron tablets due to iron deficiency.

The initial objective of this protocol is to assemble a well-documented group of patients with confirmed diagnoses of the erythropoietic protoporphyrias, including autosomal recessive Erythropoietic Protoporphyria (EPP) and X-Linked Protoporphyria (XLP) for clinical, biochemical, and genetic studies. The long-term objectives are (1) to conduct a longitudinal investigation of the natural history, complications, and therapeutic outcomes in people with erythropoietic protoporphyria, (2) to systematically investigate the psychological effects of the erythropoietic protoporphyrias on children and adults, and (3) to investigate the correlation between the identified genotypes and the resulting clinical presentation, also determining the possible interaction of other genetic markers.

The purpose of the study is to evaluate the effect of exercise and heat on the light sensibility of patients with erythropoietic protoporphyria