H. pylori eradication does not reduce paraprotein levels in monoclonal gammopathy of unknown significance (MGUS): a prospective cohort study.

Monoclonal gammopathy of unknown significance (MGUS) is a chronic haematological alteration that carries a 1% risk per year of malignant evolution. The origin of this disturbance remains unknown. Previous reports have suggested that a subgroup of patients presenting MGUS might cure after Helicobacter pylori eradication.