If you are interested in taking part in a trial, then you could ask your doctor if they know of any that might be suitable for you. You can also have a look at the National Institute of Health Research (NIHR) Be a part of Research website, to search for current clinical trials for alopecia.
The Alopecia Biobank is collecting samples of blood, skin swabs, skin biopsies and stool from volunteers with AA, AT and AU, to investigate how immune cells cause hair loss.
The Ethical Tissue bank at the University of Bradford are collecting skin biopsies from people with alopecia areata.
A physician-entered patient registry, “SECURE-Alopecia”, designed to record COVID-19 positive alopecia patient outcomes.