Plasmapheresis in patients with advanced malignant disease: a pilot study

Area of Science:

• Oncology
• Immunology
• Therapeutic Apheresis

Background:

• Advanced malignancies present complex challenges in treatment.
• Understanding immune system modulation is crucial for novel therapeutic strategies.

Purpose of the Study:

• To evaluate the safety and efficacy of plasmapheresis in patients with advanced malignant diseases.
• To assess the impact of plasma exchange on serum proteins and lymphocyte function.

Main Methods:

• Performed plasmapheresis (plasma exchange) in 16 patients with advanced cancers (melanoma, breast, colon).
• Monitored serum proteins and acute phase reactants pre- and post-procedure.
• Assessed peripheral blood lymphocyte blastogenic response and serum inhibitory effects on lymphocyte reactivity.

Main Results:

• Plasmapheresis was tolerable with side effects like nausea and chills in ~50% of patients.
• Transient changes in serum proteins were observed, returning to baseline values.
• Increased lymphocyte blastogenic response and decreased serum inhibitory effects were noted in some patients post-procedure.

Conclusions:

• Plasmapheresis is a tolerable procedure in advanced cancer patients but demonstrated no clinical efficacy.
• The study suggests a potential for immune modulation, warranting further investigation into therapeutic value.