OBJECTIVES: To assess attention deficit hyperactivity disorder (ADHD) in boys affected by Duchenne muscular dystrophy (DMD) and to explore the relationship with cognitive abilities and genetic findings. STUDY DESIGN: Boys with DMD (n = 103; 4-17 years of age, mean: 12.6) were assessed using a cognitive test (Wechsler scales). Assessment of ADHD was based on the Diagnostic Statistical Manual, Fourth Edition, Text Revision criteria and on the long version of the Conners Parents and Teachers Rating Scales. RESULTS: ADHD was found in 33 of the 103 boys with DMD. Attention problems together with hyperactivity (17/33) or in isolation (15/33) were more frequent than hyperactivity alone, which was found in 1 patient. Intellectual disability (ID) was found in 27/103 (24.6%). Sixty-two of the 103 boys had no ID and no ADHD, 9 had ID but no ADHD, 14 had ADHD but no ID, and 18 had both. ADHD occurred more frequently in association with mutations predicted to affect Dp140 expression (exon 45-55) and in those with mutations predicted to affect all dystrophin product, including Dp71 (ie, those that have promoter region and specific first exon between exons 62 and 63 but were also relatively frequent). CONCLUSIONS: Our results suggest that ADHD is a frequent feature in DMD. The risk of ADHD appears to be higher in patients carrying mutations predicted to affect dystrophin isoforms expressed in the brain and are known to be associated with higher risk of cognitive impairment.
OBJECTIVES: To assess attention deficit hyperactivity disorder (ADHD) in boys affected by Duchenne muscular dystrophy (DMD) and to explore the relationship with cognitive abilities and genetic findings. STUDY DESIGN:Boys with DMD (n = 103; 4-17 years of age, mean: 12.6) were assessed using a cognitive test (Wechsler scales). Assessment of ADHD was based on the Diagnostic Statistical Manual, Fourth Edition, Text Revision criteria and on the long version of the Conners Parents and Teachers Rating Scales. RESULTS:ADHD was found in 33 of the 103 boys with DMD. Attention problems together with hyperactivity (17/33) or in isolation (15/33) were more frequent than hyperactivity alone, which was found in 1 patient. Intellectual disability (ID) was found in 27/103 (24.6%). Sixty-two of the 103 boys had no ID and no ADHD, 9 had ID but no ADHD, 14 had ADHD but no ID, and 18 had both. ADHD occurred more frequently in association with mutations predicted to affect Dp140 expression (exon 45-55) and in those with mutations predicted to affect all dystrophin product, including Dp71 (ie, those that have promoter region and specific first exon between exons 62 and 63 but were also relatively frequent). CONCLUSIONS: Our results suggest that ADHD is a frequent feature in DMD. The risk of ADHD appears to be higher in patients carrying mutations predicted to affect dystrophin isoforms expressed in the brain and are known to be associated with higher risk of cognitive impairment.
Authors: David J Birnkrant; Katharine Bushby; Carla M Bann; Susan D Apkon; Angela Blackwell; David Brumbaugh; Laura E Case; Paula R Clemens; Stasia Hadjiyannakis; Shree Pandya; Natalie Street; Jean Tomezsko; Kathryn R Wagner; Leanne M Ward; David R Weber Journal: Lancet Neurol Date: 2018-02-03 Impact factor: 44.182
Authors: V Preethish-Kumar; A Shah; M Kumar; M Ingalhalikar; K Polavarapu; M Afsar; J Rajeswaran; S Vengalil; S Nashi; P T Thomas; A Sadasivan; M Warrier; A Nalini; J Saini Journal: AJNR Am J Neuroradiol Date: 2020-07-02 Impact factor: 3.825
Authors: Valeria Ricotti; Herbert Jägle; Maria Theodorou; Anthony T Moore; Francesco Muntoni; Dorothy A Thompson Journal: Eur J Hum Genet Date: 2015-06-17 Impact factor: 4.246
Authors: David J Birnkrant; Katharine Bushby; Carla M Bann; Susan D Apkon; Angela Blackwell; Mary K Colvin; Linda Cripe; Adrienne R Herron; Annie Kennedy; Kathi Kinnett; James Naprawa; Garey Noritz; James Poysky; Natalie Street; Christina J Trout; David R Weber; Leanne M Ward Journal: Lancet Neurol Date: 2018-02-02 Impact factor: 44.182