The porphyrias are a group of rare metabolic diseases that may present in childhood or adult life and are due to deficiencies of enzymes in the heme biosynthetic pathway. Porphyrias have various symptoms depending on the type, but these can range from neurological symptoms to sun sensitivity. See the descriptions of each type to get more information. The natural history of these disorders is not well described and it is not known why some patients are more severe than others. Therefore, the purpose of this long-term follow-up study is to collect a large group of patients with the different types of porphyria and to provide a better understanding of the natural history of these disorders. The hope is that this information will help in developing new forms of treatment.
The research aims are:
- To study the prevalence of specific indicators of disease severity. To study the effects on quality of life and health of various porphyrias.
- To determine the relationships between disease severity and various biological characteristics, genetic information, and environmental factors.
This is an observational, longitudinal study of approximately 1500 individuals with the various types of porphyria. Those participating will be evaluated annually for 5 years, or longer if they agree.
Participation in this project will include:
- Participating in annual visits or contacts.
- Providing samples, including blood, buccal cells (cells from inside of the mouth), saliva, and urine. The type of samples and amounts may vary from person to person, depending on the type of porphyria.
- Giving permission for samples to be stored and used for porphyrias research.
- Granting permission to obtain your medical records.
- Providing information about your medical history and family history.
- Completing a questionnaire about your porphyria symptoms and quality of life.
To be eligible to participate, you must:
- Have a confirmed diagnosis of one of the porphyrias (EPP, XLP, CEP, VP, AIP, HCP, PCT, HEP, ADP)
You are not eligible to participate if you have:
- Elevations of porphyrins due to other diseases, such as liver and bone marrow diseases.
- A prior diagnosis of porphyria that cannot be documented by existing medical records or repeat biochemical or DNA testing.
In order to participate in a study, you must personally contact the study coordinator of the participating institution closest to you by phone or e-mail. Please use the information below to inquire about participation.
University of Alabama at Birmingham
Angelia Johnson, Coordinator
E-mail: firstname.lastname@example.org or email@example.com
University of California at San Francisco
Yuvraaj Kapoor, Coordinator
University of Miami Miller School of Medicine, Miami
Olivia Blust, Coordinator
University of Illinois at Chicago, Chicago
Massachusetts General Hospital, Boston
Paul Jiang, Coordinator
University of Minnesota, Minneapolis
Ichan School of Medicine at Mount Sinai, New York
Nicole Gonzalez, Coordinator
Wake Forest School of Medicine, Winston-Salem
Dee Faust, Coordinator
Thomas Jefferson University, Philadelphia
Cynthia Miller, Coordinator
University of Texas Medical Branch, Galveston
Csilla Hallberg, MD, Coordinator
University of Utah, Salt Lake City
Hina Yazdani, Coodinator
University of Washington School of Medicine, Seattle
Niall Curley, Coordinator