PMID- 28695363 OWN - NLM STAT- MEDLINE DCOM- 20180418 LR - 20181113 IS - 1432-1459 (Electronic) IS - 0340-5354 (Linking) VI - 264 IP - 8 DP - 2017 Aug TI - How does performance of the Friedreich Ataxia Functional Composite compare to rating scales? PG - 1768-1776 LID - 10.1007/s00415-017-8566-0 [doi] AB - Progression of Friedreich ataxia (FRDA) is often measured using neurological rating scales such as the Friedreich Ataxia Rating Scale (FARS). Performance scales comprising functional measures have been used in other conditions due to their increased sensitivity and reproducibility and may replace examination-based measures. The aims of this study were to examine the relationship between the Friedreich Ataxia Functional Composite (FAFC) measures and characteristics of FRDA to determine if the FAFC is more sensitive to clinical change over time compared to its components. One hundred and twenty-two individuals completed the timed 25-foot walk (T25FW), 9-Hole Peg Test (9HPT) and the low-contrast letter acuity (LCLA) test at baseline, 63 at year 1, 34 at year 2 and 25 at year 3. Composite scores, Z2 (T25FW and 9HPT) and Z3 (T25FW, 9HPT and LCLA) were created. Correlation analyses were conducted. Change in FAFC components were examined over 1, 2, and 3 years. The FARS, Z2, Z3 and 9HPT showed significant change over all time points compared to baseline. The T25FW only demonstrated significant change over 3 years. The LCLA demonstrated no significant change over any of the time points. The FAFC shows significant change over time and indicates disease progression, however, this may result from individual components driving the differences. The LCLA showed no change over time, rendering Z3 redundant. The FAFC is of limited value in cohorts with non-ambulant individuals as it leads to skewing of the dataset and is better suited to less affected populations. FAU - Tai, Geneieve AU - Tai G AD - Bruce Lefroy Centre for Genetic Health Research, Murdoch Childrens Research Institute, Flemington Rd, Parkville, VIC, 3052, Australia. FAU - Yiu, Eppie M AU - Yiu EM AD - Bruce Lefroy Centre for Genetic Health Research, Murdoch Childrens Research Institute, Flemington Rd, Parkville, VIC, 3052, Australia. AD - Department of Paediatrics, University of Melbourne, Parkville, VIC, 3052, Australia. AD - Department of Neurology, Royal Children's Hospital, Parkville, VIC, 3052, Australia. FAU - Delatycki, Martin B AU - Delatycki MB AD - Bruce Lefroy Centre for Genetic Health Research, Murdoch Childrens Research Institute, Flemington Rd, Parkville, VIC, 3052, Australia. AD - Faculty of Medicine, Nursing and Health Sciences, School of Psychological Science, Monash University, Clayton, VIC, 3168, Australia. AD - Department of Paediatrics, University of Melbourne, Parkville, VIC, 3052, Australia. AD - Victorian Clinical Genetics Services, Parkville, VIC, 3052, Australia. FAU - Corben, Louise A AU - Corben LA AD - Bruce Lefroy Centre for Genetic Health Research, Murdoch Childrens Research Institute, Flemington Rd, Parkville, VIC, 3052, Australia. louise.corben@vcgs.org.au. AD - Faculty of Medicine, Nursing and Health Sciences, School of Psychological Science, Monash University, Clayton, VIC, 3168, Australia. louise.corben@vcgs.org.au. AD - Department of Paediatrics, University of Melbourne, Parkville, VIC, 3052, Australia. louise.corben@vcgs.org.au. AD - Department of Occupational Therapy, Monash Health, Clayton, VIC, 3086, Australia. louise.corben@vcgs.org.au. LA - eng PT - Comparative Study PT - Journal Article DEP - 20170710 PL - Germany TA - J Neurol JT - Journal of neurology JID - 0423161 SB - IM MH - Adolescent MH - Adult MH - Aged MH - Aged, 80 and over MH - Child MH - Cohort Studies MH - Disease Progression MH - Female MH - Fingers/physiopathology MH - Friedreich Ataxia/*diagnosis/genetics/physiopathology MH - Humans MH - Male MH - Middle Aged MH - Motor Activity MH - Reading MH - *Severity of Illness Index MH - Visual Acuity MH - Walk Test MH - Young Adult OTO - NOTNLM OT - Friedreich Ataxia Functional Composite OT - Friedreich ataxia OT - Performance measures OT - Rating scales EDAT- 2017/07/12 06:00 MHDA- 2018/04/19 06:00 CRDT- 2017/07/12 06:00 PHST- 2017/03/16 00:00 [received] PHST- 2017/07/03 00:00 [accepted] PHST- 2017/07/02 00:00 [revised] PHST- 2017/07/12 06:00 [pubmed] PHST- 2018/04/19 06:00 [medline] PHST- 2017/07/12 06:00 [entrez] AID - 10.1007/s00415-017-8566-0 [pii] AID - 10.1007/s00415-017-8566-0 [doi] PST - ppublish SO - J Neurol. 2017 Aug;264(8):1768-1776. doi: 10.1007/s00415-017-8566-0. Epub 2017 Jul 10.