Table 1.

Maternal Allele Classification and Expansion to Full Mutation

Maternal Mutation Status	Maternal CGG Repeat Size	Full Mutation Expansion (%) in Next Generation
Unaffected	< 45	0
Intermediate	45–54	0
Premutation	55–59	< 2
	60–69	2
	70–79	32
	80–89	74
	90–99	94
	100–200	98
Full Mutation	> 200

Data from Nolin SL et al.³³