Impact of prenatal exome sequencing for fetal genetic diagnosis on maternal psychological outcomes and decisional conflict in a prospective cohort

Objective To evaluate associations between prenatal trio exome sequencing (trio-ES) and psychological outcomes among women with an anomalous pregnancy. Methods Trio-ES study enrolling patients with major fetal anomaly and normal microarray. Women completed self-reported measures and free response interviews at two time points, pre- (1) and post- (2) sequencing. Pre-sequencing responses were compared to post-sequencing responses; post-sequencing responses were stratified by women who received trio-ES results that may explain fetal findings, secondary findings (medically actionable or carrier couple status), or negative results. Free responses were content analyzed. Results 115 trios were enrolled. Of those, 41/115 (35.7%) received results from trio-ES, including 36 (31.3%) who received results that may explain the fetal phenotype. These women had greater post-sequencing distress compared to women who received negative results, including generalized distress (p=0.03) and test-related distress (p=0.2); they also had worse psychological adaptation to results (p=0.001). Genomic knowledge did not change from pre- to post-sequencing (p=0.51). Major themes from content analyses included closure, future pregnancy, altruism, anxiety , and gratitude . Conclusions Women show more distress after receiving trio-ES results compared to those who do not.