The purpose of this study is to examine the causes and pathology of alopecia areata and other hair and skin disorders. Skin biopsies and blood and/or clinical information collected in the study will be used for research aiming at developing new options for the treatment of alopecia areata and…
We are conducting a research study on how psoriasis might be caused or worsened by high levels of the blood sugar-lowering hormone insulin. We are seeking people with plaque psoriasis, ages 18-65, who are overweight or obese with a body mass index of 25-35. Participants will have blood drawn and…
This study is designed to test how well an intravenous human immunoglobulin concentrate, IGIV-C (compared with placebo) improves the ability to taper participant's dose of corticosteroids without causing significant increase in your muscle weakness and worsening MG symptoms. A placebo is a medication that looks like the study medication but has no active…
This study is designed to test how well an intravenous human immunoglobulin concentrate, IGIV-C (compared with placebo) improves your muscle weakness associated with MG symptoms. A placebo is a medication that looks like the study medication but has no active ingredient. Immunoglobulin is an antibody produced by white blood…
The purpose of this study is to look for abnormal genes and gene expression profiles that help determine why a person develops amyotrophic lateral sclerosis (ALS) and related motor neuron diseases (MND) and why their symptoms present and progress with a particular pattern. For up to three years, subjects will be followed every 3 months at the Columbia ALS…