Evaluating Sirolimus to Treat Autoimmune Blistering Dermatosis Pemphigus
The purpose of this research is to study alternative treatments for the skin disease pemphigus (a rare autoimmune blistering disorder of the skin) by using sirolimus, an immunosuppressive drug. Immunosuppressive drugs inhibit or prevent the activity of the immune system and are commonly used to treat autoimmune diseases, inflammatory diseases, and organ transplantation rejection.
|Study Design:||Endpoint Classification: Efficacy Study
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
|Official Title:||Evaluation of Sirolimus for the Treatment of the Autoimmune Blistering Dermatosis Pemphigus|
- Improvement of ABSIS Score while reducing Steroid Dosage [ Time Frame: 12 Months ] [ Designated as safety issue: No ]Measurement of disease severity will be quantified using ABSIS (Autoimmune Bullous Skin Disorder Intensity Score). Improvement in disease control is quantified by the maintenance or improvement of ABSIS score while reducing steroid dosage.
- Statistical Measures [ Time Frame: 12 Months ] [ Designated as safety issue: No ]The statistical goal is to observe "success," an improvement in disease control while up-titrating sirolimus dosage. As there will be no control group, the subject's progress at the end of the study will be compared to their baseline at the beginning of the study. The subject's disease severity at the beginning of the study will be compared to the disease severity at each visit and be correlated with the dosage of sirolimus and corticosteroid.
|Study Start Date:||February 2011|
|Estimated Study Completion Date:||February 2015|
|Estimated Primary Completion Date:||February 2015 (Final data collection date for primary outcome measure)|
Experimental: Sirolimus (formerly known as Rapamycin)
Subjects with stable pemphigus vulgaris already on treatment with prednisone will be enrolled. Subjects will start taking oral sirolimus and have it up-titrated while decreasing the prednisone dosage. Their disease state will be monitored during this time.
Drug: Sirolimus (formerly known as Rapamycin)
For low to moderate immunologic risk, the loading dose is 6mg immediately after transplantation, followed by 2mg PO Qday in conjunction with cyclosporine and corticosteroids. After 2-4 months, cyclosporine should be discontinued over 4-8 weeks while titrating sirolimus drug concentrations within the target-range with whole blood trough concentrations every 1-2 weeks. Monitoring is needed because cyclosporine inhibits the metabolism of sirolimus, and discontinuation of cyclosporine can lead to lower levels of sirolimus. In high immunologic risk patients, the loading dose is 15mg after transplantation, followed by 5mg PO Qday in conjunction with cyclosporine and corticosteroids for 12 months. A whole blood trough level is recommended between days 5 and 7 with adjustment to the daily dose.
The purpose of this study is to explore a new medication for the skin disease termed pemphigus. Our specific aim is to determine whether the use of sirolimus will allow for a decrease in the dosage or possibly eliminate the need for corticosteroids, which so far is the only type of drug that can control this disease.
Pemphigus is an autoimmune disease characterized by blistering, caused by autoantibodies against certain cells in the skin. This disease most commonly occurs in individuals ages 50 and older, and it presents as painful shallow erosions and/or blisters in the mouth and/or skin. Pemphigus is very painful and uncomfortable, associated with impaired quality of life and significant morbidity. Severe or untreated cases of pemphigus can become fatal if the involved surface area becomes large enough to cause dehydration and/or infection. The first line of therapy, and the standard of care, for pemphigus remain to be systemic corticosteroids. However, corticosteroids have many known side effects, especially when used for a long time. Many cases of pemphigus are insufficiently controlled with corticosteroids alone and require the addition of other immunosuppressive agents, such as azathioprine, cyclophosphamide, mycophenolate mofetil, or a variety of other therapies used off-label. All of these treatments are not always successful and have undesirable side effects, including increased risk of malignancy and infections. Although these treatments can offer some relief from the disease, they are also often the cause of many side effects.
Sirolimus (formerly known as rapamycin) is a drug commonly used after renal transplants to prevent organ rejection. In this study, pemphigus subjects with active disease will begin taking sirolimus in conjunction with corticosteroids, using a similar regimen used for organ transplantation to treat pemphigus. While increasing sirolimus and decreasing the corticosteroids, subjects will be monitored over a 12 month period to evaluate their disease response. The purpose of this study is to observe data trends.
Our specific aim is to determine whether the use of sirolimus will allow for a decrease in the dosage of the corticosteroid prednisone, which so far is the only type of drugs that can control these diseases, without making the pemphigus worse.
|Contact: Brian Swasdibutraemail@example.com|
|United States, California|
|University of California, Irvine||Recruiting|
|Irvine, California, United States, 92697|
|Contact: Brian Swasdibutra, CRC 949-824-7103 firstname.lastname@example.org|
|Principal Investigator: Sergei Grando, MD, PhD|
|Principal Investigator:||Sergei Grando, MD, PhD||University of California, Irvine|