About Us


The Lupus Initiative® is a program of the American College of Rheumatology’s Collaborative Initiatives. TLI staff members include the following:

Executive Vice President, American College of Rheumatology

Mark Andrejeski serves as Executive Vice President of the American College of Rheumatology, a position he has held since 1987. Under his leadership, the ACR obtained grant funding for The Lupus Initiative® in 2009. His strong support of TLI and Collaborative Initiatives has allowed the ACR to partner with a variety of organizations and experts to increase awareness of lupus and other rheumatic diseases. Mark holds a Bachelor of Science in Business Management and Economics from Gannon University in Erie, Pennsylvania and an MBA from Pennsylvania State University.

Senior Director, Collaborative Initiatives

Sheryl brings two decades of expertise in creating and managing programs that increase diversity and raise awareness of disparities. Sheryl practiced law prior to beginning her work in the nonprofit sector. In her legal career, she represented a primary-care-focused medical school, individual physicians, and a hospital. Most recently she has had significant and measurable success leading results-driven projects related to health disparities in lupus. Sheryl holds a Bachelor of Arts in Journalism from the University of Minnesota and a Doctor of Law from Emory University School of Law where she was a Robert Woodruff Fellow.

Director, Collaborative Initiatives

Anna Knippel has worked in the nonprofit sector for more than nine years. The majority of her non-profit career has been dedicated to eliminating disparities in health care for the uninsured and underinsured, with particular emphasis on minority groups. Anna holds a Bachelor of Science in Business Management from Florida State University and a Master’s in Theology from Mercer University, Atlanta.

Senior Communications Manager, Collaborative Initiatives

Before joining our team, Stacey worked in the education department at the American College of Rheumatology where she served as Senior Specialist, Annual Meeting Abstracts and Marketing. Prior to beginning her work in the nonprofit sector, Stacey established a long record of accomplishment in creating and leading integrated marketing campaigns in the corporate space. Stacey holds a Bachelor of Arts and Master of Science from the University of Tennessee at Knoxville; and is a member of the American Society of Association Executives.

Senior Manager, Collaborative Initiatives

Erin Brooks was a practicing attorney in Atlanta for five years where she was responsible for developing relationships with a wide range of stakeholders, simultaneously managing multiple high priority cases and negotiating positive resolutions. She also has experience working at a non-profit in the housing arena, for a newspaper, and a government office. Erin holds a Bachelor of Arts in English from Hampton University and a Juris Doctorate from Yale Law School.

Coordinator, Collaborative Initiatives