Interestingly, in Section 3.2 we describe a case with high titer of AQP1 antibodies and the development of both autoimmune hemolytic anemia (AIHA) and a clinical relapse in a patient with NMOSD phenotype; recovery of both diseases occurred with a simultaneous dramatic drop of AQP1-Abs. Here, AQP1 is linked to autoimmune hemolytic anemia.