From: Cognitive deficits and CTG repeat expansion size in classical myotonic dystrophy type 1 (DM1)
Authors* | Number of patients | Tests | Main conclusion |
---|---|---|---|
Turnpenny et al. [34] | 55 | WAIS (short version). | Increase in repeat size associated with lower IQ. |
Damian et al. [10] | 28 | Neuropsychological test battery†. | Large repeat size (>1000) associated with cognitive impairment. |
Jaspert et al. [33] | 14 | MMSE, MWT-B, Progressive matrices. | Large repeat size (> 1000) associated with cognitive impairment. |
Rubinsztein et al. [9] | 36 | MMSE, NART, Progressive matrices. | Mild DM1 associated with impaired memory function. |
Perini et al. [25] | 17 | WAIS | CTG correlates with total IQ and non-verbal IQ. |
Marchini et al. [13] | 24 | WAIS | CTG correlates with all IQ measures and short-term memory (Digit span). |
Steyaert et al. [14] | 24 | WISC | CTG correlates with IQ in childhood type of DM1. |
Meola et al. [8] | 19 | Neuropsychological test battery.† | No correlation between CTG repeat size and test performance. |
Modoni et al. [24] | 70 | Neuropsychological test battery.† | No correlation between CTG repeat size and test performance. |