Alloimmunisation to platelet transfusions in the Indian patients

Area of Science:

• Hematology
• Immunology
• Transfusion Medicine

Background:

• Chemotherapy for leukemia often necessitates blood and platelet transfusions.
• Alloimmunization, an immune response to foreign antigens, is a potential complication of transfusions.
• Parous women may have a higher risk of alloimmunization due to prior pregnancies.

Purpose of the Study:

• To investigate the incidence of alloimmunization in leukemia patients undergoing chemotherapy and receiving transfusions.
• To identify risk factors for alloimmunization in this patient population.

Main Methods:

• Prospective follow-up of 29 leukemia patients receiving chemotherapy, blood transfusions (BT), and platelet transfusions (PT).
• Alloimmunization was assessed using the platelet immunofluorescence test.
• Patient history, including parity and transfusion history, was recorded.

Main Results:

• Two parous women patients, aged 65 and 28, tested positive for alloimmunization.
• Both positive patients had received multiple BT but no PT prior to testing.
• No PT had been administered to the positive patients at the time of testing.

Conclusions:

• Alloimmunization is a concern in leukemia patients receiving multiple BT.
• Pre-transfusion screening for alloimmunization is recommended for parous women with a history of multiple BT before initiating PT.
• Further studies with larger cohorts are needed to confirm these findings.