- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02912793
Safety and Efficacy of Intravenous Trappsol Cyclo (HPBCD) in Niemann-Pick Type C Patients
A Phase I/II Study to Evaluate the Safety and PK of iv Trappsol Cyclo (HP-β-CD) in Patients With Niemann-Pick Disease Type C NPC-1 and the Pharmacodynamic Effects of Treatment Upon Markers of Cholesterol Metabolism and Clinical Outcomes
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
The planned study has been designed as a Phase I/II, double-blind, randomised, multi-centre, parallel group study based on information and data available from the administration of Trappsol Cyclo via compassionate/named patient use in patients with NPC-1, and data on other cyclodextrin products in the scientific literature.
The study is comprised of two stages. The primary objective of Stage 1 is to compare the plasma pharmacokinetics of three different doses of IV Trappsol Cyclo in the prevention /delay of NPC-1 progression.Secondary objectives include investigation of the Hydroxypropyl Beta Cyclodextrin (HP-β-CD) effect of three different doses of IV Trappsol Cyclo upon serum and lymphocytic markers of cholesterol metabolism (Stages 1 and 2) and evaluation of concentrations in the cerebrospinal fluid (CSF) following intravenous (IV) administration (Stage 1), evaluation of the impact of treatment upon measures of neurological function including ataxia, aphasia and saccadic eye movements, and the impact of treatment upon behavioural aspects of NPC-1 (Stage 2).
It is planned to recruit a total of 12 patients to the study. Patients will be randomised 1:1:1 to one of the three dose levels (1500 mg/kg, 2000 mg/kg or 2500 mg/kg; four patients per dose level). Treatment will be administered every two weeks by slow IV infusion at a concentration of 250 mg/mL over 8 hours. Patients completing Stage 1 of the study will continue into Stage 2 and receive treatment for 48 weeks. Patients who withdraw prior to completion of the initial pharmacokinetic (PK) and pharmacodynamics (PD) assessments will be replaced.
The design of the proposed study thus enables early assessment of biochemical markers of response but allows for a sufficient dosing duration to enable the effectiveness of Trappsol in NPC-1 to be assessed.
As miglustat is an approved treatment for NPC-1 in the EU, with an established efficacy and safety profile, it would be unethical to exclude patients receiving miglustat therapy from the study, given that the study itself will also be conducted at sites in Europe. However, it is planned to balance randomisation across the treatment groups for its use.
The maximum dose proposed for this study is below the maximum dose for which long term clinical data is available in 2 patients (2800 mg/kg weekly for 3-5 years). Although individual clinicians have not always utilised an escalating rate of infusion, the reports of infusion related reactions in three patients suggest that this is an appropriate clinical strategy to mitigate the risk of such events and is consistent with dosing administration for other therapeutic agents. In the proposed study, treatment will be administered less frequently than has been undertaken in compassionate use. This longer dosing interval is supported by nonclinical data comparing the metabolism of cholesterol in non-human species with that in man; although a once weekly dosing interval was initially studied in man based on data in the mouse, HP-β-CD cholesterol metabolism/turnover in the mouse is 13-fold higher than in man which, in NPC-1, likely translates into a 13-fold slower accumulation of cholesterol in human cells compared with those of the mouse.Therefore, it is theorised that, given the slower cholesterol metabolism in humans, the dosing interval could be much less frequent in man than in mouse; however, based on what is known about cholesterol metabolism in humans and the pharmacokinetic and pharmacodynamic effect of HP-β-CD in the mouse, a dosing interval of 2 weeks in man is likely to be well within the therapeutic dosing interval and also minimises the amount of infusions required to be administered.
Study Type
Enrollment (Actual)
Phase
- Phase 2
- Phase 1
Contacts and Locations
Study Locations
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'Afula, Israel, 1834111
- HaEmek MC
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Rager Blvd
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Beer sheva, Rager Blvd, Israel, 85025
- Soroka MC
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Huddinge
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Solna, Huddinge, Sweden, 141 76
- Karolinska Trial Alliance
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London, United Kingdom, WC1N 3BG
- Leonard Wolfson Experimental Neurology Centre
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Greater Manchester
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Salford, Greater Manchester, United Kingdom, M6 8HD
- Salford Royal Hospital
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
Confirmed diagnosis of NPC-1 defined as one of the following
- Two NPC-1 mutations on genotyping
- One NPC-1 mutation and positive filipin staining (current or prior)
- Vertical supranuclear gaze palsy [VSNGP] plus either ≥ one NPC-1 mutation or positive filipin staining and no NPC-2 mutations
- NIH NPC Severity Score <30 and with no more than 4 individual domains with a score ≥ 3.
Age range: 2 years upwards
- Inclusion of the first three paediatric patients will be restricted to individuals aged ≥ 5 years. Once the first three paediatric patients have safely completed stage 1, study entry will be open to all ages ≥2 years as per the protocol
- Negative pregnancy test for females of child bearing potential
Written, informed consent
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Exclusion Criteria:
- The presence of NPC-2 mutations on genotyping
- Previous receipt of cyclodextrin therapy
- Lanksy score < 50 if aged ≤16 or Karnofsky score < 40 if aged > 16.
- Inability to comply with the proposed protocol assessments
- Concurrent treatment with any type of cholesterol lowering agents such as statins, fibrates, ezetimibe
- Concurrent medical conditions representing a contraindication to any of the study medications
- Stage 3 renal impairment or worse as indicated by eGFR< 60mL/min using the MDRD equation
- Clinical evidence of acute liver disease including symptoms of jaundice or right upper quadrant pain or INR >1. 8
- Involvement in another interventional clinical trial within the previous 6 months
- Weight >100 kg
- Females of childbearing potential who are not willing to use a method of highly effective contraception (hormonal contraception, intrauterine device, intrauterine hormone-releasing system, bilateral tubal occlusion, vasectomised partner, or true abstinence) during the study and the follow-up period. True abstinence can only be in line with the preferred and usual lifestyle of the subject. Periodic abstinence (e.g., calendar, ovulation, symptothermal, post-ovulation methods), declaration of abstinence for the duration of a trial, and withdrawal are not acceptable methods of contraception.
Females who are breastfeeding
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Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Quadruple
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
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Active Comparator: Hydroxypropyl-beta-cyclodextrin IV 1500 mg/kg
Hydroxypropyl-beta-cyclodextrin administered by slow IV infusion for 8h every 2 weeks
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Used in the treatment of Niemann-Pick C1
Other Names:
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Active Comparator: Hydroxy-propyl-beta-cyclodextrin IV 2000 mg/kg
Hydroxypropyl-beta-cyclodextrin administered by slow IV infusion for 8h every 2 weeks
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Used in the treatment of Niemann-Pick C1
Other Names:
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Active Comparator: Hydroxypropyl-beta-cyclodextrin IV 2500 mg/kg
Hydroxypropyl-beta-cyclodextrin administered by slow IV infusion for 8h every 2 weeks
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Used in the treatment of Niemann-Pick C1
Other Names:
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
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To evaluate the plasma the Maximum Concentration (C max) of 3 doses of Trappsol by measurement of plasma levels
Time Frame: 0,2,4,6,& 8 hours (h) after the start of the IV infusion of Trappsol and 0.5,1,2,4,8 & 12 h after the end of the infusion
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To evaluate plasma PK of Trappsol by comparison of Maximum Concentration (Cmax ) of the three doses
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0,2,4,6,& 8 hours (h) after the start of the IV infusion of Trappsol and 0.5,1,2,4,8 & 12 h after the end of the infusion
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To evaluate the Time to Maximum Concentration ( Tmax) of 3 doses of Trappsol by measurement of plasma levels
Time Frame: 0,2,4,6,& 8h after the start of IV infusion of Trappsol and 0.5,1,2,4,6 &12h after the end of infusion
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To evaluate the plasma PK of Trappsol by comparison of the Tmax of three doses
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0,2,4,6,& 8h after the start of IV infusion of Trappsol and 0.5,1,2,4,6 &12h after the end of infusion
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To evaluate the Volume of Distribution of Trappsol by measurement of plasma levels
Time Frame: ),2,4,6 & 8 h after the start of the IV infusion of Trappsol and 0.5,1,2,4,8,&12 h after the end of the infusion
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To evaluate the plasma PK of Trappsol by comparison of the Volume of Distribution of three doses
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),2,4,6 & 8 h after the start of the IV infusion of Trappsol and 0.5,1,2,4,8,&12 h after the end of the infusion
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To evaluate the elimination half-life of Trappsol by measurement of plasma levels
Time Frame: 0,2,3,6 & 8h after the start of IV infusion of Trappsol and 0.5,1,2,4,8 &12h after the end of infusion
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To evaluate the PK of Trappsol by comparison of the Elimination half-lives of three doses
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0,2,3,6 & 8h after the start of IV infusion of Trappsol and 0.5,1,2,4,8 &12h after the end of infusion
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Markers of cholesterol metabolism
Time Frame: Screening,Days1,2,3,5,8,Weeks 2,4,8,10,12,14,16,18,20,24,28,32,36,40,44,48 and follow-up
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To investigate the effect of 3 different doses of intravenous Trappsol in patients upon serum and lymphocytic markers of cholesterol metabolism in patients with NPC-1
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Screening,Days1,2,3,5,8,Weeks 2,4,8,10,12,14,16,18,20,24,28,32,36,40,44,48 and follow-up
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CSF levels of HP-β-CD
Time Frame: Pre then 4,8,and 12h after the start of the initial infusion
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To evaluate HP-β-CD concentrations in CSF following intravenous administration of Trappsol in patients with NPC-1 to determine if the drug crosses the blood brain barrier
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Pre then 4,8,and 12h after the start of the initial infusion
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Number of patients with treatment-related adverse events as assessed by CTCAE ( version 4.03)
Time Frame: Screening,Days1,2,3,4,6,8,Week 2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38,40,42,44,46,48 and follow-up
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Events will be gathered by spontaneous reporting, clinical observation and laboratory tests including standard audiology tests and auditory evoked potential to assess hearing
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Screening,Days1,2,3,4,6,8,Week 2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38,40,42,44,46,48 and follow-up
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Abdominal ultrasound
Time Frame: Baseline 12,24,36 and 48 weeks
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Change from baseline in hepatic and splenic morphology
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Baseline 12,24,36 and 48 weeks
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The proportion of patients with a reduction from baseline in the NIH NPC severity scale
Time Frame: Baseline and 48weeks
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Reduction of one point in two or more domains
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Baseline and 48weeks
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Top evaluate the impact of treatment on ataxia
Time Frame: Screening, baseline and weeks 12,18,36 and 48
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Ataxia will be rated using the Scale for the assessment and rating of ataxia (SARA) in patients where age and cognitive function allow it.
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Screening, baseline and weeks 12,18,36 and 48
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To evaluate the effect of treatment on fine motor skills
Time Frame: Screening, baseline and weeks 12,18,36 and 48
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Motor skills will be assessed by the bead-threading test in patients where age and cognitive function allow it
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Screening, baseline and weeks 12,18,36 and 48
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To evaluate the effect of treatment on saccadic eye movements
Time Frame: Screening, baseline and weeks 12,18,36 and 48
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Changes in saccadic eye movements will be assessed by clinical observation.
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Screening, baseline and weeks 12,18,36 and 48
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To evaluate cognitive impairment
Time Frame: Screening, baseline and weeks 12,18,36 and 48
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Changes in cognitive impairment will be assessed using the Mini Mental Scale ( MMS) in patients where age and cognitive function allow it.
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Screening, baseline and weeks 12,18,36 and 48
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Other Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
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Change from baseline in hepatic fractionated cholesterol
Time Frame: Baseline , day 2 and 48weeks
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To investigate the impact of treatment on cholesterol handling by the liver
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Baseline , day 2 and 48weeks
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Exploratory measures of potential CSF Biomarkers
Time Frame: Baseline, weeks 24and 48
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To investigate the impact of treatment upon CSF markers of NPC-1 disease
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Baseline, weeks 24and 48
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Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Reena Sharma, MB BS, Salford Royal Foundation NHS Trust,
Publications and helpful links
General Publications
- Folstein MF, Folstein SE, McHugh PR. "Mini-mental state". A practical method for grading the cognitive state of patients for the clinician. J Psychiatr Res. 1975 Nov;12(3):189-98. doi: 10.1016/0022-3956(75)90026-6. No abstract available.
- Kamper SJ, Maher CG, Mackay G. Global rating of change scales: a review of strengths and weaknesses and considerations for design. J Man Manip Ther. 2009;17(3):163-70. doi: 10.1179/jmt.2009.17.3.163.
- Battisti C, Tarugi P, Dotti MT, De Stefano N, Vattimo A, Chierichetti F, Calandra S, Federico A. Adult onset Niemann-Pick type C disease: A clinical, neuroimaging and molecular genetic study. Mov Disord. 2003 Nov;18(11):1405-9. doi: 10.1002/mds.10541.
- Coussement W, Van Cauteren H, Vandenberghe J, et al. Toxicological profile of Hydroxypropyl-beta-cyclodextrin (HPBCD) in laboratory animals. In: Minutes of the Fifth International Symposium on cyclodextrins; 28-30 March 1990; Paris, France: Editions de Santé; 1990 p. 522-4.
- Fischer D, Stewart AL, Bloch DA, Lorig K, Laurent D, Holman H. Capturing the patient's view of change as a clinical outcome measure. JAMA. 1999 Sep 22-29;282(12):1157-62. doi: 10.1001/jama.282.12.1157.
- Giese AK, Mascher H, Grittner U, Eichler S, Kramp G, Lukas J, te Vruchte D, Al Eisa N, Cortina-Borja M, Porter FD, Platt FM, Rolfs A. A novel, highly sensitive and specific biomarker for Niemann-Pick type C1 disease. Orphanet J Rare Dis. 2015 Jun 17;10:78. doi: 10.1186/s13023-015-0274-1.
- Gould S, Scott RC. 2-Hydroxypropyl-beta-cyclodextrin (HP-beta-CD): a toxicology review. Food Chem Toxicol. 2005 Oct;43(10):1451-9. doi: 10.1016/j.fct.2005.03.007. Epub 2005 Apr 19.
- Greer WL, Dobson MJ, Girouard GS, Byers DM, Riddell DC, Neumann PE. Mutations in NPC1 highlight a conserved NPC1-specific cysteine-rich domain. Am J Hum Genet. 1999 Nov;65(5):1252-60. doi: 10.1086/302620.
- King KA, Gordon-Salant S, Yanjanin N, Zalewski C, Houser A, Porter FD, Brewer CC. Auditory phenotype of Niemann-Pick disease, type C1. Ear Hear. 2014 Jan-Feb;35(1):110-7. doi: 10.1097/AUD.0b013e3182a362b8.
- Liu B, Li H, Repa JJ, Turley SD, Dietschy JM. Genetic variations and treatments that affect the lifespan of the NPC1 mouse. J Lipid Res. 2008 Mar;49(3):663-9. doi: 10.1194/jlr.M700525-JLR200. Epub 2007 Dec 12.
- Liu B, Turley SD, Burns DK, Miller AM, Repa JJ, Dietschy JM. Reversal of defective lysosomal transport in NPC disease ameliorates liver dysfunction and neurodegeneration in the npc1-/- mouse. Proc Natl Acad Sci U S A. 2009 Feb 17;106(7):2377-82. doi: 10.1073/pnas.0810895106. Epub 2009 Jan 26.
- Mattsson N, Zetterberg H, Bianconi S, Yanjanin NM, Fu R, Mansson JE, Porter FD, Blennow K. Miglustat treatment may reduce cerebrospinal fluid levels of the axonal degeneration marker tau in niemann-pick type C. JIMD Rep. 2012;3:45-52. doi: 10.1007/8904_2011_47. Epub 2011 Sep 28.
- Naureckiene S, Sleat DE, Lackland H, Fensom A, Vanier MT, Wattiaux R, Jadot M, Lobel P. Identification of HE1 as the second gene of Niemann-Pick C disease. Science. 2000 Dec 22;290(5500):2298-301. doi: 10.1126/science.290.5500.2298.
- Neufeld EB, Cooney AM, Pitha J, Dawidowicz EA, Dwyer NK, Pentchev PG, Blanchette-Mackie EJ. Intracellular trafficking of cholesterol monitored with a cyclodextrin. J Biol Chem. 1996 Aug 30;271(35):21604-13. doi: 10.1074/jbc.271.35.21604.
- Park WD, O'Brien JF, Lundquist PA, Kraft DL, Vockley CW, Karnes PS, Patterson MC, Snow K. Identification of 58 novel mutations in Niemann-Pick disease type C: correlation with biochemical phenotype and importance of PTC1-like domains in NPC1. Hum Mutat. 2003 Oct;22(4):313-25. doi: 10.1002/humu.10255.
- Patterson MC, Vecchio D, Prady H, Abel L, Wraith JE. Miglustat for treatment of Niemann-Pick C disease: a randomised controlled study. Lancet Neurol. 2007 Sep;6(9):765-72. doi: 10.1016/S1474-4422(07)70194-1.
- Patterson MC, Hendriksz CJ, Walterfang M, Sedel F, Vanier MT, Wijburg F; NP-C Guidelines Working Group. Recommendations for the diagnosis and management of Niemann-Pick disease type C: an update. Mol Genet Metab. 2012 Jul;106(3):330-44. doi: 10.1016/j.ymgme.2012.03.012. Epub 2012 May 8.
- Ramirez CM, Liu B, Aqul A, Taylor AM, Repa JJ, Turley SD, Dietschy JM. Quantitative role of LAL, NPC2, and NPC1 in lysosomal cholesterol processing defined by genetic and pharmacological manipulations. J Lipid Res. 2011 Apr;52(4):688-98. doi: 10.1194/jlr.M013789. Epub 2011 Feb 2.
- Schicks J, Muller Vom Hagen J, Bauer P, Beck-Wodl S, Biskup S, Krageloh-Mann I, Schols L, Synofzik M. Niemann-Pick type C is frequent in adult ataxia with cognitive decline and vertical gaze palsy. Neurology. 2013 Mar 19;80(12):1169-70. doi: 10.1212/WNL.0b013e31828869f9. Epub 2013 Feb 20. No abstract available.
- Schmitz-Hubsch T, du Montcel ST, Baliko L, Berciano J, Boesch S, Depondt C, Giunti P, Globas C, Infante J, Kang JS, Kremer B, Mariotti C, Melegh B, Pandolfo M, Rakowicz M, Ribai P, Rola R, Schols L, Szymanski S, van de Warrenburg BP, Durr A, Klockgether T, Fancellu R. Scale for the assessment and rating of ataxia: development of a new clinical scale. Neurology. 2006 Jun 13;66(11):1717-20. doi: 10.1212/01.wnl.0000219042.60538.92. Erratum In: Neurology. 2006 Jul 25;67(2):299. Fancellu, Roberto [added].
- Sevin M, Lesca G, Baumann N, Millat G, Lyon-Caen O, Vanier MT, Sedel F. The adult form of Niemann-Pick disease type C. Brain. 2007 Jan;130(Pt 1):120-33. doi: 10.1093/brain/awl260. Epub 2006 Sep 26.
- te Vruchte D, Speak AO, Wallom KL, Al Eisa N, Smith DA, Hendriksz CJ, Simmons L, Lachmann RH, Cousins A, Hartung R, Mengel E, Runz H, Beck M, Amraoui Y, Imrie J, Jacklin E, Riddick K, Yanjanin NM, Wassif CA, Rolfs A, Rimmele F, Wright N, Taylor C, Ramaswami U, Cox TM, Hastings C, Jiang X, Sidhu R, Ory DS, Arias B, Jeyakumar M, Sillence DJ, Wraith JE, Porter FD, Cortina-Borja M, Platt FM. Relative acidic compartment volume as a lysosomal storage disorder-associated biomarker. J Clin Invest. 2014 Mar;124(3):1320-8. doi: 10.1172/JCI72835.
- Trendelenburg G, Vanier MT, Maza S, Millat G, Bohner G, Munz DL, Zschenderlein R. Niemann-Pick type C disease in a 68-year-old patient. J Neurol Neurosurg Psychiatry. 2006 Aug;77(8):997-8. doi: 10.1136/jnnp.2005.086785. No abstract available.
- Vance JE. Dysregulation of cholesterol balance in the brain: contribution to neurodegenerative diseases. Dis Model Mech. 2012 Nov;5(6):746-55. doi: 10.1242/dmm.010124. Epub 2012 Oct 12.
- Vanier MT. Niemann-Pick disease type C. Orphanet J Rare Dis. 2010 Jun 3;5:16. doi: 10.1186/1750-1172-5-16.
- Vite CH, Bagel JH, Swain GP, Prociuk M, Sikora TU, Stein VM, O'Donnell P, Ruane T, Ward S, Crooks A, Li S, Mauldin E, Stellar S, De Meulder M, Kao ML, Ory DS, Davidson C, Vanier MT, Walkley SU. Intracisternal cyclodextrin prevents cerebellar dysfunction and Purkinje cell death in feline Niemann-Pick type C1 disease. Sci Transl Med. 2015 Feb 25;7(276):276ra26. doi: 10.1126/scitranslmed.3010101.
- Welford RW, Garzotti M, Marques Lourenco C, Mengel E, Marquardt T, Reunert J, Amraoui Y, Kolb SA, Morand O, Groenen P. Plasma lysosphingomyelin demonstrates great potential as a diagnostic biomarker for Niemann-Pick disease type C in a retrospective study. PLoS One. 2014 Dec 5;9(12):e114669. doi: 10.1371/journal.pone.0114669. eCollection 2014.
- Weyer A, Abele M, Schmitz-Hubsch T, Schoch B, Frings M, Timmann D, Klockgether T. Reliability and validity of the scale for the assessment and rating of ataxia: a study in 64 ataxia patients. Mov Disord. 2007 Aug 15;22(11):1633-7. doi: 10.1002/mds.21544.
- Yamamoto T, Nanba E, Ninomiya H, Higaki K, Taniguchi M, Zhang H, Akaboshi S, Watanabe Y, Takeshima T, Inui K, Okada S, Tanaka A, Sakuragawa N, Millat G, Vanier MT, Morris JA, Pentchev PG, Ohno K. NPC1 gene mutations in Japanese patients with Niemann-Pick disease type C. Hum Genet. 1999 Jul-Aug;105(1-2):10-6. doi: 10.1007/s004399900059.
- Yanjanin NM, Velez JI, Gropman A, King K, Bianconi SE, Conley SK, Brewer CC, Solomon B, Pavan WJ, Arcos-Burgos M, Patterson MC, Porter FD. Linear clinical progression, independent of age of onset, in Niemann-Pick disease, type C. Am J Med Genet B Neuropsychiatr Genet. 2010 Jan 5;153B(1):132-40. doi: 10.1002/ajmg.b.30969.
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
- Mental Disorders
- Metabolic Diseases
- Brain Diseases
- Central Nervous System Diseases
- Nervous System Diseases
- Lymphatic Diseases
- Neurologic Manifestations
- Neurobehavioral Manifestations
- Neurocognitive Disorders
- Genetic Diseases, Inborn
- Neurodegenerative Diseases
- TDP-43 Proteinopathies
- Proteostasis Deficiencies
- Metabolism, Inborn Errors
- Lysosomal Storage Diseases
- Lipid Metabolism Disorders
- Dementia
- Brain Diseases, Metabolic
- Brain Diseases, Metabolic, Inborn
- Language Disorders
- Communication Disorders
- Sphingolipidoses
- Lysosomal Storage Diseases, Nervous System
- Lipidoses
- Lipid Metabolism, Inborn Errors
- Speech Disorders
- Frontotemporal Lobar Degeneration
- Aphasia
- Histiocytosis, Non-Langerhans-Cell
- Histiocytosis
- Frontotemporal Dementia
- Aphasia, Primary Progressive
- Pick Disease of the Brain
- Niemann-Pick Diseases
- Niemann-Pick Disease, Type A
- Niemann-Pick Disease, Type C
- Molecular Mechanisms of Pharmacological Action
- Sequestering Agents
- Betadex
Other Study ID Numbers
- CTD-TCNP-201
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
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