Gaines

Dr. Gaines is a medical researcher in the field of ataxia telangiectasia. He is an unseen character in the Season 8 episode The C Word.
Dr. Gaines is testing a drug called Lex-2 to treat the ataxia, a disease that affects the patient in the episode, Emily Lawson. When the team does an environmental scan of the patient's house, they find a supply of the drug. Her mother, Elizabeth Lawson admits she has been treating her daughter with the drug because Gaines's research has been so promising. However, Eric Foreman has also contacted Dr. Gaines and has discovered that the drug also causes kidney failure and that his soon to be published article will recommend its use.