Gestational trophoblastic neoplasia: a meta-analysis evaluating reproductive and obstetrical outcomes after administration of chemotherapy

Gestational trophoblastic neoplasia represents a rare placental malignancy spectrum that is treated with single- or multi-agent chemotherapy. This disease often impacts women of childbearing age, making post-chemotherapy fertility and obstetrical outcomes an important consideration. We aimed to ascertain the pregnancy rates and obstetric outcomes in women with gestational trophoblastic neoplasia after undergoing treatment with chemotherapy.A systematic literature review was conducted to identify studies that reported post-chemotherapy fertility and obstetric outcomes among women with gestational trophoblastic neoplasia. We performed a single-proportion meta-analysis for the outcomes of conception/pregnancy rate, term live birth rate, first and second trimester spontaneous abortions rate, stillbirth rate, premature delivery rate, and fetal/neonatal malformation rate.A total of 27 studies were included in the analysis. The median age ranged between 25.5 and 33.1 years. The pregnancy rate among women with a desire to conceive, comprising a total of 1329 women and 1192 pregnancies, was 86.7% (95% CI 80.8% to 91.6%). The term live birth rate in 6752 pregnancies was 75.84% (95% CI 73.4% to 78.2%). The adverse pregnancy outcomes were seemingly comparable to those of the general population apart from a minor increase in the stillbirth rate. The pooled proportion for the outcome of malformation rate was 1.76% (95% CI 1.3% to 2.2%). The repeat mole rate in 6384 pregnancies was 1.28% (95% CI 0.95% to 1.66%). Subsequent sub-group analysis indicated that neither multi-agent chemotherapy nor conception within 12 months post-chemotherapy increased the adverse obstetric events risk or fetal malformations.Nearly 90% of patients desiring future fertility after chemotherapy for gestational trophoblastic disease were able to conceive. In addition, adverse pregnancy outcomes were similar to that in the general population. Multi-agent chemotherapy does not seemingly increase the malformation rate.