Transient monoclonal immunoglobulin G with anti-dextran activity

Area of Science:

• Immunology
• Hematology
• Gastroenterology

Background:

• Iron deficiency is common in patients with inflammatory bowel diseases like regional enteritis.
• Iron dextran is a common treatment for iron deficiency anemia.
• Monoclonal gammopathies can be associated with chronic inflammation or malignancy.

Observation:

• A patient with regional enteritis received iron dextran therapy.
• The patient subsequently developed a significant IgG-K monoclonal protein spike (3.1 g/100 ml).
• This spike demonstrated precipitin activity against dextran sulfate.

Findings:

• The patient showed no signs of multiple myeloma.
• The monoclonal protein spike gradually disappeared spontaneously over two years.
• The findings suggest a potential immune response to iron dextran.

Implications:

• This case highlights a rare potential adverse reaction to iron dextran.
• It suggests that iron dextran may induce transient monoclonal gammopathies in susceptible individuals.
• Further research is needed to understand the immunologic mechanisms involved.