This clinical trial record focuses on Lacticaseibacillus rhamnosus GG supplementation in active ankylosing spondylitis. The primary medical condition investigated in the study is ankylosing spondylitis. As part of the research, a dietary supplement containing Lacticaseibacillus rhamnosus GG was administered as an intervention. A second intervention evaluated in this study was a placebo. The sponsor and organizer of this research project is Acibadem University. According to the official records, this clinical study is currently completed.