Diseases and Conditions

Monoclonal gammopathy of undetermined significance (MGUS)

Risk factors

Factors that increase your risk of developing MGUS include:

  • Age. The average age at diagnosis is 70 years.
  • Race. Africans and African Americans are more likely to experience MGUS than are white people.
  • Sex. MGUS is more common in men.
  • Family history. You may have a higher risk of MGUS if other people in your family have the condition.