PGT-M (preimplantation genetic testing for monogenic disorders)
A test on cells biopsied from an embryo to check for a specific single-gene condition known to run in the family.
In plain English
It's a test used when a specific inherited condition is known to run in the family, checking embryos for that particular gene fault.
Why it matters
It's used deliberately when there's a known genetic risk, unlike PGT-A which screens more generally for chromosome number.
Related terms
Guides that cover this
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