# Managing a Pregnancy in the Presence of the Rare Blood Group Antibody PP1Pk

## TL;DR

This paper discusses managing a high-risk pregnancy in a woman with a rare blood group antibody, using autologous blood donations and plasmapheresis to reduce antibody levels and prevent complications.

## Contribution

The study presents a successful case of managing a pregnancy complicated by the rare anti-PP1Pk antibody using autologous blood donations and plasmapheresis.

## Key findings

- Autologous blood donations and plasmapheresis were effective in managing antibody levels during pregnancy.
- The approach reduced the risk of hemolytic transfusion reaction and improved pregnancy outcomes.
- Successful pregnancy management was achieved despite the scarcity of compatible blood donors.

## Abstract

Pregnant women with p phenotype, who lack antigens P, P1, and Pk, spontaneously form anti-PP1Pk antibodies whose primary target is the placenta. The risk of miscarriage in these women is 50%–70% and reaches 87% in the second trimester. The therapies aim to reduce the titer of antibodies early in pregnancy. They also have risk of hemolytic transfusion reaction, with very few compatible red blood cell donors in the world. In this study, we present a case of successful pregnancy managed with autologous blood donations and plasmapheresis.