ACE2 and plasma cell myeloma: The top 10 high-frequency drugs in PubMedAnn were “hydroxychloroquine,” “chloroquine,” “azithromycin,” “dexamethasone,” “ribavirin,” “colchicine,” “ergocalciferol,” “ivermectin,” “methylprednisolone,” and “ritonavir.” The top 10 high-frequency targets in PubMedAnn were “angiotensin converting enzyme 2,” “M Protein, multiple myeloma,” “inflammatory response,” “vitronectin, human,” “endopeptidases,” “measles virus nucleoprotein,” “cytokine,” “peptides,” “TMPRSS2 gene,” and “glycoproteins.”