A study using a large preimplantation genetic testing for aneuploidy (PGT‑A) cohort examines the likelihood that the embryo chosen for transfer on the basis of morphological ranking carries chromosomal abnormalities. The report focuses on the embryo that would be selected by morphology rather than reporting overall cohort aneuploidy rates.

The investigation asks how that aneuploidy risk differs across maternal age groups and across morphological grades, effectively comparing the chromosomal status of top‑ranked embryos by age and by morphological quality. The design centres on whether morphology‑based ranking corresponds with lower or higher aneuploidy probability in the embryo selected for transfer.

By analysing cases from a large PGT‑A dataset, the work aims to clarify the relationship between visual embryo assessment and genetic status across ages and grading categories without presupposing outcomes.

Why it matters: Clarifying the aneuploidy risk of embryos chosen by morphology and how that risk varies with maternal age and morphological grade addresses a practical question for embryo selection and laboratory practice.

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