Behçet syndrome: a contemporary view

Area of Science:

• Immunology
• Genetics
• Rheumatology

Background:

• Behçet syndrome presents with diverse symptoms and regional variations, complicating diagnostic criteria.
• Genetic studies highlight HLA-B*51 as a risk factor, but its limited prevalence suggests additional genetic or environmental factors.
• The 'MHC-I-opathy' concept is emerging, though its precise definition and etiological role remain under investigation.

Purpose of the Study:

• To explore the complex etiological factors contributing to Behçet syndrome.
• To discuss the challenges in formulating diagnostic criteria for Behçet syndrome.
• To review advancements in managing major Behçet syndrome manifestations.

Main Methods:

• Review of existing literature on Behçet syndrome pathogenesis, genetics, and clinical manifestations.
• Analysis of genetic risk factors, including HLA-B*51.
• Evaluation of current therapeutic strategies for major organ involvement.

Main Results:

• Multiple pathological pathways are implicated in Behçet syndrome, evidenced by symptom clusters and regional differences.
• HLA-B*51 is a significant genetic risk factor, yet other genetic and non-genetic factors are crucial, especially in non-endemic areas.
• Advances in technology have improved the management of severe manifestations like vascular disease, uveitis, and neurological involvement.

Conclusions:

• Behçet syndrome pathogenesis is multifactorial, involving genetic predisposition and other operative factors.
• Despite diagnostic challenges and incomplete understanding of mechanisms, patient prognosis, particularly for ocular and vascular disease, is improving.
• Further research into the 'MHC-I-opathy' concept and other pathways is warranted.