CD79A and Arthritis: Other associated comorbidities include arthritis, malignancy (acute and chronic myeloid leukemia [AML and CML] and non-Hodgkin lymphoma), hematologic disorders (myelodysplastic syndrome, polycythemia vera, IgA monoclonal gammopathy of unknown significance [MGUS], and myelofibrosis), arthritis, hidradenitis suppurativa, and depression9,25,27.