ITPR1 and myelitis: Interestingly, “weakness in extremities”, “subacute spastic paraparesis”, “extensive myelitis” and “blurred vision”, respectively, have been described in four further recently published ITPR1-IgG/anti-Sj-positive patients [18], again suggesting that neuronal damage or dysfunction in ITPR1-IgG/anti-Sj-associated disease may be more widespread than previously known.