This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
HLA-B27 is associated with? 
Select and explain. 
A. Osteoarthritis, B. Sjogren syndrome, C. Behcet disease, D. Reiter's Syndrome
D: Reiter's Syndrome
Answer: D: Reiter's Syndrome 
Explanation: In addition to its association with ankylosing spondylitis, HLA-B27 is implicated in other types of seronegative spondyloarthropathy
• Reactive arthritis (Reiters Syndrome)
• Acute anterior uveitis and iritis
• Psoriatic arthritis
• Ulcerative colitis associated spondylo-arthritis