MGUS Article 01. Monoclonal Gammopathy of Undetermined Significance (MGUS)—Not So Asymptomatic after All. 02. Monoclonal gammopathy of undetermined significance: evaluation, risk assessment, management, and beyond. 03. Monoclonal gammopathy of undetermined significance (MGUS): where is the hidden danger? Definition and work-up. 04. Advances in MGUS diagnosis.