Clinical trial NCT03386266: Biomarkers and Validation of Selected Outcome Measures (CMTNSmod)
Official title: Biomarkers and Validation of Selected Outcome Measures (CMTNSmod)
Study type: OBSERVATIONAL
Overall status: COMPLETED
Conditions: Charcot-Marie-Tooth Disease, Type IA
Keywords: Biomarkers
CMT1A
Charcot-Marie-Tooth disease
Lead sponsor: University Medical Center Goettingen
Sponsor class: OTHER
Collaborators: name: University Hospital Muenster
name: Ludwig-Maximilians - University of Munich
First posted: 2017-12-29
Enrollment: 156
Sex: ALL
Minimum age (years): 3
Maximum age (years): 65
Standard ages: CHILD
ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Observational model: COHORT
Time perspective: PROSPECTIVE
Sampling method: NON_PROBABILITY_SAMPLE
Study population: Patients suffering from CMT1A disease

Brief summary: CMT is a rare disease for which novel treatments are being developed. Evaluation of intervention efficacy is hampered by slow progression and lack of sensitive outcome measures. Primary goal of the project is to identify and validate RNA and protein derived biomarkers in blood of CMT patients for selected outcome measures over 2 years. The investigators expect to develop more responsive outcome measures and circulating biomarkers to improve assessment of intervention efficacy in forthcoming therapeutic trials.

Detailed description: Novel treatments are being developed for CMT. Intervention efficacy evaluation is hampered by slow disease progression and lack of sensitive outcome measures. The investigators have previously shown that biomarkers from skin identified in a CMT1A rat model can be translated to CMT1A patients. Primary goal is to identify circulating biomarkers correlating with disease severity and progression. 210 young, adolescent and adult patients affected by genetically confirmed CMT1A, will be evaluated with different clinical outcome measures, assessing impairment, disability and quality of life: Patients will be re-evaluated at 12 (n=147) and 24 months (n=103) with the same measures to assess disease progression. A number of candidate markers correlating with disease severity have been identified in blood samples from the rat model of CMT1A. At 0-12-24 months a blood sample will be drawn from affected CMT1A patients. The investigators will purify total mRNA from blood samples, and validate the 10 strongest regulated markers identified in the rat model via qRTPCR in blood of CMT1A patients. Protein biomarkers will also be analysed. Marker expression at baseline and at follow up will be correlated with clinical severity and progression. In this translational project (rat/human) the investogators expect to develop more responsive outcome measures and circulating biomarkers to improve assessment of intervention efficacy in forthcoming therapeutic trials.

Eligibility criteria: Inclusion Criteria:

* Clinical diagnosis of CMT1A
* Genetic confirmation of PMP22 duplication (for adults patients)
* Children aged 3-11, adolescents aged 12-17 and adults aged 18-65 years
* Signed informed patient consent

Exclusion Criteria:

* Other causes of neurological and psychiatric disorders
* Severe internistic disease
* Patient known or suspected to be alcohol / drug abuser
* Pregnancy, breast feeding period
* Permanent Vitamin C intake
* Participation an interventional clinical study up to 4 weeks prior to inclusion

Primary outcomes:
measure: mRNA Expression Levels in blood samples from CMT1A patients
timeFrame: 3 years
measure: mRNA Expression Levels in Skin biopsies from CMT1A patients
timeFrame: 3 years
Secondary outcomes:
Other outcomes:
Locations:
city: Goettigen
country: Germany
facility: University Medical Center Goettingen
state: Lower Saxony
Study officials:
affiliation: University Medical Center Goettingen
name: Michael W. Sereda, MD, Professor of Neurology
role: PRINCIPAL_INVESTIGATOR
References:
citation: Mannil M, Solari A, Leha A, Pelayo-Negro AL, Berciano J, Schlotter-Weigel B, Walter MC, Rautenstrauss B, Schnizer TJ, Schenone A, Seeman P, Kadian C, Schreiber O, Angarita NG, Fabrizi GM, Gemignani F, Padua L, Santoro L, Quattrone A, Vita G, Calabrese D; CMT-TRIAAL/CMT-TRAUK Group; Young P, Laura M, Haberlova J, Mazanec R, Paulus W, Beissbarth T, Shy ME, Reilly MM, Pareyson D, Sereda MW. Selected items from the Charcot-Marie-Tooth (CMT) Neuropathy Score and secondary clinical outcome measures serve as sensitive clinical markers of disease severity in CMT1A patients. Neuromuscul Disord. 2014 Nov;24(11):1003-17. doi: 10.1016/j.nmd.2014.06.431. Epub 2014 Jun 19.
citation: Fledrich R, Schlotter-Weigel B, Schnizer TJ, Wichert SP, Stassart RM, Meyer zu Horste G, Klink A, Weiss BG, Haag U, Walter MC, Rautenstrauss B, Paulus W, Rossner MJ, Sereda MW. A rat model of Charcot-Marie-Tooth disease 1A recapitulates disease variability and supplies biomarkers of axonal loss in patients. Brain. 2012 Jan;135(Pt 1):72-87. doi: 10.1093/brain/awr322. Epub 2011 Dec 20.
citation: Fledrich R, Mannil M, Leha A, Ehbrecht C, Solari A, Pelayo-Negro AL, Berciano J, Schlotter-Weigel B, Schnizer TJ, Prukop T, Garcia-Angarita N, Czesnik D, Haberlova J, Mazanec R, Paulus W, Beissbarth T, Walter MC, Triaal C, Hogrel JY, Dubourg O, Schenone A, Baets J, De Jonghe P, Shy ME, Horvath R, Pareyson D, Seeman P, Young P, Sereda MW. Biomarkers predict outcome in Charcot-Marie-Tooth disease 1A. J Neurol Neurosurg Psychiatry. 2017 Nov;88(11):941-952. doi: 10.1136/jnnp-2017-315721. Epub 2017 Aug 31.