In this report, we describe a case that illustrates the cooccurring manifestations of two autoimmune disorders: Behçet's disease, diagnosed according to international criteria, and MOGAD, as evidenced by positive serum anti-MOG antibodies and LETM marked by a distinctive ‘H sign’, a feature more typically associated with MOGAD [2] than with the myelitis seen in Behçet's disease which instead presents with the ‘Bagle sign’ [3]. This evidence concerns the gene MOG and Behcet disease.