Para-Bombay phenotype in a pregnant woman

VernacularTitle:类孟买血型合并妊娠1例
Author: Shiyuan WANG ¹ ; Bin CHEN ; Zhihua HE ; Shuang LIANG ; Rongfeng CHENG ; Wei QIN
Author Information

1. 深圳市妇幼保健院产科，深圳　518000
Keywords: ABO blood-group system; Blood transfusion; Prenatal care
From: Chinese Journal of Perinatal Medicine 2022;25(5):369-372
CountryChina
Language:Chinese
Abstract: We report the successful management of a pregnant woman with para-Bombay phenotype. The woman received routine prenatal check-ups and underwent vaginal delivery in the Affiliated Shenzhen Maternity & Child Healthcare Hospital. Blood grouping at 12 weeks of pregnancy showed that the forward typing of the patient was group O, but reverse typing indicated group AB. Her ABO genotype was determined as ABO*A1.02/B.01. There was c.551-552del AG and c.880-882 del TT in the FUT1 gene, and 357C>T and 716G>A in the FUT2 gene. Thus, her FUT1 genotype was h1/h2 and FUT2 genotype was Se/Se. No significant abnormalities were found in the routine prenatal examination. A male infant was born vaginally at 39 +2 gestational weeks, who was grouped as B-positive without neonatal hemolytic disease. Para-Bombay is a rare blood group. It is necessary to clarify the blood type during prenatal examination and develop a management strategy for those with special blood groups to reduce the incidence of postpartum hemorrhage and ensure safe delivery.