PMID- 33305167 OWN - NLM STAT- MEDLINE DCOM- 20210914 LR - 20220418 IS - 2532-1900 (Electronic) IS - 1128-2460 (Print) IS - 1128-2460 (Linking) VI - 39 IP - 3 DP - 2020 Sep TI - Predictors of prognosis in type 1 myotonic dystrophy (DM1): longitudinal 18-years experience from a single center. PG - 109-120 LID - 10.36185/2532-1900-015 [doi] AB - The aim of the study was to identify possible predictors of neurological worsening and need of non-invasive ventilation (NIV) in individuals affected by myotonic dystrophy type 1 (DM1), the most common form of adult-onset muscular dystrophy. METHODS: A retrospective observational cohort study was undertaken. Thirty-three patients with genetic diagnosis of DM1 were followed at our Neuromuscular unit in Modena. Abnormal trinucleotide repeat (CTG) expansion of dystrophy protein kinase gene (MDPK) on chromosome 19q 13.3 was the prerequisite for inclusion. The number of CTG repeats was determined. All the participants were older than 14 at the time of enrolment, therefore they could be included into the juvenile or adult form of the disease. Participants were neurologically evaluated every 6-8 months up to 18 years. Neurological impairment was assessed by Muscular Impairment Rating (MIRS), Medical Research Council (MRC), and modified Rankin (mRS) scales. The independent variables considered for prognosis were age at first evaluation, duration of the disease, CTG repeat number, gender, and presence of cardiac and vascular morbidities.Male patients were 51.5% and female patients 48.5%. Sixteen patients were younger than the mean age of 30.1 years, while the remaining 17 were up to 65. Twelve subjects (36.4%) underwent NIV before the end of follow-up. Muscle force and disability scores showed statistically significant deterioration (p < 0.001) during follow-up. The worsening was significantly higher among patients carrying higher number of CTG repeats and of younger age. The presence of cardio-vascular involvement has significant impact on neurological and respiratory progression.Neurological worsening is predicted by CTG expansion size, young age and presence of cardio-vascular morbidities. CI - (c)2020 Gaetano Conte Academy - Mediterranean Society of Myology, Naples, Italy. FAU - Mazzoli, Marco AU - Mazzoli M AD - Department of Biomedical, Metabolic and Neural Sciences, University Hospitals of Modena, Italy. FAU - Ariatti, Alessandra AU - Ariatti A AD - Department of Biomedical, Metabolic and Neural Sciences, University Hospitals of Modena, Italy. FAU - Garuti, Gian Carlo AU - Garuti GC AD - Respiratory Unit, Mirandola Hospital, Italy. FAU - Agnoletto, Virginia AU - Agnoletto V AD - Cardiology Unit, University Hospitals of Modena, Italy. FAU - Genovese, Maurilio AU - Genovese M AD - Neuroradiology Unit, University Hospitals of Modena, Italy. FAU - Gozzi, Manuela AU - Gozzi M AD - Radiology Unit, University Hospitals of Modena, Italy. FAU - Kaleci, Shaniko AU - Kaleci S AD - Department of Surgical, Medical, Dental and Morphological Science with Interest in Transplant, Oncological and Regenerative Medicine, University of Modena and Reggio Emilia, Italy. FAU - Marchioni, Alessandro AU - Marchioni A AD - Respiratory Diseases Unit, Department of Medical and Surgical Sciences, University Hospitals of Modena, Italy. FAU - Malagoli, Marcella AU - Malagoli M AD - Neuroradiology Unit, University Hospitals of Modena, Italy. FAU - Galassi, Giuliana AU - Galassi G AD - Department of Biomedical, Metabolic and Neural Sciences, University Hospitals of Modena, Italy. LA - eng PT - Journal Article PT - Observational Study DEP - 20200901 PL - Italy TA - Acta Myol JT - Acta myologica : myopathies and cardiomyopathies : official journal of the Mediterranean Society of Myology JID - 9811169 RN - 0 (DMPK protein, human) RN - EC 2.7.11.1 (Myotonin-Protein Kinase) SB - IM MH - Adult MH - Age of Onset MH - Cardiovascular Diseases/epidemiology MH - Diagnostic Techniques, Neurological MH - Disability Evaluation MH - Disease Progression MH - Female MH - Humans MH - Italy/epidemiology MH - Male MH - *Muscular Dystrophies/diagnosis/etiology MH - *Myotonic Dystrophy/epidemiology/genetics/physiopathology MH - Myotonin-Protein Kinase/genetics MH - *Nervous System Diseases/etiology/physiopathology/therapy MH - *Neuromuscular Monitoring/methods/statistics & numerical data MH - Noninvasive Ventilation/statistics & numerical data MH - Prognosis MH - Retrospective Studies MH - Trinucleotide Repeat Expansion/*genetics PMC - PMC7711325 OTO - NOTNLM OT - CTG trinucleotide repeat OT - muscular impairment rating scale OT - myotonic dystrophy type I EDAT- 2020/12/12 06:00 MHDA- 2021/09/15 06:00 PMCR- 2020/09/01 CRDT- 2020/12/11 06:05 PHST- 2020/05/11 00:00 [received] PHST- 2020/09/08 00:00 [accepted] PHST- 2020/12/11 06:05 [entrez] PHST- 2020/12/12 06:00 [pubmed] PHST- 2021/09/15 06:00 [medline] PHST- 2020/09/01 00:00 [pmc-release] AID - 10.36185/2532-1900-015 [doi] PST - epublish SO - Acta Myol. 2020 Sep 1;39(3):109-120. doi: 10.36185/2532-1900-015. eCollection 2020 Sep.