Type of donor liver transplant does not affect pregnancy outcomes - a systematic review and meta-analysis.

Liver transplant (LT) has become increasingly common amongst reproductive-aged women. The effect of the type of liver donor, either living donor LT (LDLT) or a deceased donor LT (DDLT), on pregnancy outcomes is unknown. As such, we aim to review the available literature and assess obstetric, pregnancy, or delivery outcomes in LDLT. We conducted a comprehensive literature review of MEDLINE, EMBASE, Cochrane, and Scopus databases. Random-effect meta-regression assessed the association between the percentage of women who underwent LDLT (independent variable) and the proportion of outcomes. Meta-regression results were expressed as a regression coefficient which transforms the proportion of outcomes of interest associated with a 1% increase in the percentage of LDLT patients. A value of 0 denotes no relationship between the outcomes and LDLT. A total of six articles (438 patients) were included with a total of 806 pregnancies. Eighty-eight (20.09%) patients underwent LDLT. None of the studies segregated the data based on the type of donor LT. The median time from LT to pregnancy was 4.86 (4.62-5.03) years. Twelve (1.5%) stillbirths were reported. LDLT was statistically significantly associated with a higher rate of stillbirths (coefficient 0.002, p < 0.001; I2 0%). The type of donor LT was not associated with an increased risk of other obstetric, pregnancy, or delivery complications. This is the first meta-analysis to evaluate the effect of type of donor LT on pregnancy outcomes. This study highlights the lack of robust literature addressing this important topic. The results suggest that pregnancy outcomes after LDLT and DDLT are comparable. Despite LDLT being statistically significantly associated with a higher rate of stillbirths, the association is weak and is unlikely to be clinically significant.