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Transfus Med Hemother. 2018 May;45(3):162-166. doi: 10.1159/000488804. Epub 2018 May 3.

Anti-D Alloimmunization after RhD-Positive Platelet Transfusion in RhD-Negative Women under 55 Years Diagnosed with Acute Leukemia: Results of a Retrospective Study.

Author information

1
Blood Bank, Hematology Service. Hospital Universitari I Polit├Ęcnic La Fe, Valencia, Spain.
2
Pediatric Hemato-Oncology Service, Hospital Universitari i Polit├Ęcnic La Fe, Valencia, Spain.
3
CIBERONC, Instituto Carlos III, Madrid, Spain.

Abstract

Background:

Anti-D alloimmunization can occur when platelets from RhD-positive donors are transfused to RhD-negative patients, due to red blood cell residues in the platelet concentrates.

Methods:

Our objective was to analyze the anti-D alloimmunization rate in a selected group of women under 55 years of age diagnosed with acute leukemia over an 18-year period. We focused the analysis on RhD-negative patients who received RhD-positive platelet transfusions.

Results:

From January 1998 to October 2016, 382 women under 55 years were diagnosed with acute leukemia. A total of 56 patients were RhD-negative, and 48 (85.7%) received RhD-positive platelets. The median number of platelet concentrates transfused per patient was 23, and 48% of all platelet transfusions were RhD-positive. The 48 RhD-negative patients received a total of 949 RhD-positive platelet concentrates. Two patients developed anti-D: a 36-year-old woman with M3 acute myeloblastic leukemia and a 52-year-old patient with a secondary acute myeloblastic leukemia.

Conclusion:

We conclude that there is a need for agreement in the transfusion guidelines on the recommendation of anti-D alloimmunization prophylaxis. We suggest a possible benefit in favor of anti-D prophylaxis in childbearing women with acute leukemia.

KEYWORDS:

Acute leukemia; Anti-D alloimmunization; Platelet transfusion

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