De novo mutations bridge parental reproductive factors and offspring health

De novo mutations distinguishable by parent of origin (paternal, maternal) and by post-zygotic events were identified in whole-genome sequencing of 7,851 parent–offspring families. Compared with prior work often relying on smaller samples or a single mutation class, this characterizes both parent-of-origin and post-zygotic de novo mutations in a larger family cohort. Based on whole-genome sequencing of 7,851 parent–offspring families, a large-scale family sequencing design.

Distinct ART procedures were associated with different de novo mutation patterns, and this association was independent of parental age at conception. Links ART procedure types to de novo mutation spectra and indicates the link is not explained by parental age alone. The association is reported as statistically independent of parental age at conception, but the visible text is a preview summary without effect sizes or procedure-level detail.

Increased paternal mutational burden statistically mediated the effects of advanced parental age and ART on gestational duration and other birth outcomes. Attributes part of the pathway between parental reproductive factors and offspring birth outcomes to paternal de novo mutational burden, offering a mediation rather than purely correlational framework. A statistical mediation analysis; the text states effects were 'statistically mediates' without mediation proportions or confidence intervals.

The results apply to human parent–offspring families in settings involving conception route, parental age, and early-life birth outcomes, and can supply hypotheses and directions for reproductive genetics, perinatal epidemiology, and ART-related counseling; the conclusions pertain to the studied family cohort and outcomes examined, and extension to other populations or clinical decisions requires separate validation.

The visible text is a journal preview summary and lacks figures, effect sizes, confidence intervals, and the specific classification of ART procedures, so mediation proportions, the relative contribution of each mutation class, and the exact set of birth outcomes remain to be confirmed in the full article; causal interpretation under an observational family design and reproducibility across populations are directions a careful reader would continue to watch.