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The pediatric Charcot‐Marie‐Tooth (CMT) specific quality of life (QOL) outcome measure (pCMT‐QOL) is a recently developed and validated patient‐reported measure of health QOL for children with CMT. The aim of this study was to provide and validate an Italian version of the pCMT‐QOL. The original English version was translated and adapted into Italian using standard procedures. pCMT‐QOL was administered to patients genetically diagnosed with CMT, aged 8 to 18 years. A retest was given 2 weeks later to assess reliability in all patients. A total of 22 patients (median age 14 years, DS 2.5; M:F 1:1) affected with CMT (19 CMT1A, 2 CMT2A, 1 CMT2K) were assessed as part of their clinical visit. The Italian‐pCMT‐QOL demonstrate a high test‐retest reliability. None of the patients experienced difficulty in completing the questionnaire, no further corrections were needed after administration in patients. The Italian‐pCMT‐QOL is a reliable, culturally adapted and comparable version of the original English pCMT‐QOL. This questionnaire is expected to be valuable in monitoring disease progression and useful for future clinical trials in Italian‐speaking children with CMT. [ABSTRACT FROM AUTHOR]

Abstract: Background : Charcot–Marie–Tooth disease is the most common inherited nerve disorder and typically presents with pes cavus foot deformity and ankle equinus during childhood. Level in the variation of symmetry of musculoskeletal lower limb involvement across the clinical population is unknown, despite early reports describing gross asymmetry. Methods : We measured foot alignment and ankle flexibility of the left and right limbs using accurate and reliable standardised paediatric outcome measures in 172 patients aged 3–20years with a variety of disease subtypes recruited from the United States, United Kingdom, Italy and Australia. Findings : While a large range of differences existed between left and right feet for a small proportion of children, there was no overall significant difference between limbs. Interpretation : There are two important implications of these findings. Children with Charcot–Marie–Tooth disease generally exhibit symmetrical foot alignment and ankle flexibility between limbs. As such, analysing one limb only for biomechanical-related research is appropriate and satisfies the independence requirements for statistical analysis. However, because there are large differences between feet for a small proportion of children, an individualised limb-focused approach to clinical care is required. [Copyright &y& Elsevier]

Background and Objectives: Charcot-Marie-Tooth disease type 1A (CMT1A), caused by a duplication of PMP22 , is the most common hereditary peripheral neuropathy. For participants with CMT1A, few clinical trials have been performed; however, multiple therapies have reached an advanced stage of preclinical development. In preparation for imminent clinical trials in participants with CMT1A, we have produced a Clinical Outcome Assessment (COA), known as the CMT-Functional Outcome Measure (CMT-FOM), in accordance with the FDA Roadmap to Patient-Focused Outcome Measurement to capture the key clinical end point of function., Methods: Participants were recruited through CMT clinics in the United States (n = 130), the United Kingdom (n = 52), and Italy (n = 32). To derive the most accurate signal with the fewest items to identify a therapeutic response, a series of validation studies were conducted including item and factor analysis, Rasch model analysis and testing of interrater reliability, discriminative ability, and convergent validity., Results: A total of 214 participants aged 18-75 years with CMT1A (58% female) were included in this study. Item, factor, and Rasch analysis supported the viability of the 12-item CMT-FOM as a unidimensional interval scale of function in adults with CMT1A. The CMT-FOM covers strength, upper and lower limb function, balance, and mobility. The 0-100 point scoring system showed good overall model fit, no evidence of misfitting items, and no person misfit, and it was well targeted for adults with CMT1A exhibiting high inter-rater reliability across a range of clinical settings and evaluators. The CMT-FOM was significantly correlated with the CMT Examination Score ( r = 0.643; p < 0.001) and the Overall Neuropathy Limitation Scale ( r = 0.516; p < 0.001). Significantly higher CMT-FOM total scores were observed in participants self-reporting daily trips and falls, unsteady ankles, hand tremor, and hand weakness ( p < 0.05)., Discussion: The CMT-FOM is a psychometrically robust multi-item, unidimensional, disease-specific COA covering strength, upper and lower limb function, balance, and mobility to capture how participants with CMT1A function to identify therapeutic efficacy.

Quality of life (QoL), as defined by the Short Form 36, has previously been shown to be abnormal in patients with Charcot-Marie-Tooth disease (CMT), both for Physical Composite Scores (PCS) and Mental Composite Scores (MCS). We have now extended these observations in a multicenter evaluation of 89 patients with Charcot-Marie-Tooth disease type 1A, the most common form of CMT. Both the PCS and MCS were abnormal also in this cohort, compared with the Italian population at large. In particular, the ability to ambulate independently as well as toe and heel walk correlated well with QoL measures in our patients.