CClinicalTrials.gg
RecruitingNCT04012411LCR-MHUpdated Feb 12, 2026

Study of BDNF Pathway Biomarkers in the Cerebrospinal Fluid in Patients With Huntington's Disease

An interventional study of Brain MRI and Lumbar Punction in Huntington Disease, sponsored by University Hospital, Montpellier. Recruiting at 1 site in France. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-02-12.

Sponsored by University Hospital, Montpellier · Not applicable, Interventional, and Basic science

From the registry’s dates

  • Started Mar 2020; still recruiting 6 years 7 months later.
Phase
Not applicable
Study type
Interventional
Enrollment
135
Allocation
Non-randomized
Ages
18 Years and older
Sex
All
01

Study summary

Huntington disease (HD, 1.3/10 000) is an autosomal dominant disease due to an abnormal expansion of CAG triplets in HTT gene.

Several pathophysiological mechanisms have been evoked, including an alteration of the signaling pathway of the Brain Derived Neurotrophic Factor (BDNF), a neurotrophic factor involved in the survival of neurons (striatal and hippocampal) and synaptic plasticity. BDNF is synthesized at the level of cortical neurons and transported, through the axonal transport in which the Htt is involved, to the nerve endings; it's then secreted in response to excitatory synaptic activity, especially at the level of glutamatergic synapses. Besides, at the postsynaptic level it binds with great specificity to TrkB receptors (tropomyosin-related kinase receptors B) with a neuroprotective effect on dendritic and axonal growth and an increase in synaptic plasticity, especially at the level of the striatum and the hippocampus.

BDNF is decreased in the brain of animal models, as well as in patients with HD; the alteration of this pathway would occur in the early stages of the disease.

In the context of concomitant multiple treatments, the BNDF pathway may be one of the therapeutic targets of HD.

Moreover, in HD it remains essential to detect biological markers representative of the different pathogenic pathways that can be tested in vivo in humans to confirm the hypotheses developed at the level of basic research; these biomarkers could subsequently become biomarkers of disease progression and/or biomarkers of therapeutic efficacy of potential targeted treatments.

Therefore, this study aims to characterize potential biomarkers of the BNDF pathway in plasma and CSF in subjects with HD and to confirm the importance of this pathogenic mechanism in vivo in humans.

Read the detailed description
  • Design: Multicentre prospective case-control study. Centres: University Hospital of Montpellier, France; University Hospital of Bordeaux, France; University Hospital of Nimes, France; University Hospital of Poitiers, France.
  • Main objective: To evaluate BDNF in cerebrospinal fluid as a potential marker of the BDNF-TrkB signaling pathway in vivo in HD patients at a symptomatic stage.
  • Secondary objectives: i) Evaluate plasma BDNF in subjects with HD; ii) Study the correlation between BDNF in CSF and BDNF in plasma; iii) Study the correlation between markers of the BDNF pathway and clinical severity, multimodal brain MRI parameters, and relevant markers of evolution of HD; iv) Confirm the increase of Tau and NFL (Neurofilament Light Chain) markers in plasma and in CSF, as markers of neuronal degeneration, in subjects with HD ; v) Test the TrkB assay in the CSF of patients with HD
  • Inclusion Criteria. General inclusion criteria: age ≥ 18 years old; national health insurance cover. Patient inclusion criteria: genetically confirmed Huntington's disease diagnosis (≥ 35 CAG repeat in HTT gene exon 1); written informed consent; patient agreement for LP, if requested. Control inclusion criteria: previous LP for medical reason; agreement for inclusion in a biobank for research purposes.
  • Exclusion Criteria. General exclusion criteria: subject protected by law, under curatorship or guardianship. Patients exclusion criteria: too severe HD, according to the clinician's judgment, possibly making difficult to perform cognitive evaluation or MRI; contraindications to brain MRI; contraindications to LP; inability to give informed consent. Control exclusion criteria: presence of a neurodegenerative of inflammatory central nervous system disease.
  • Inclusion period: 48 months
  • Duration of participation for each patient: 123 days maximum
  • Total research duration: 64 months
  • Plan of the study. Patients group: in 90 patients with HD, the investigators will perform: a collection of the main anamnestic and clinical data; a blood test for the determination of plasmatic BDNF, Tau and NFL and the genotyping of the Val66Met polymorphism of the BDNF gene; multimodal brain MRI with volumetry, diffusion tensor, functional MRI of rest; a measurement of the severity of Huntington's disease and Total Functional Capacity scales; neuropsychological tests (SDMT, STROOP test, Trail Making Test (TMT) A and B, digit span). In a subgroup of 45 patients, the investigators will also perform a lumbar puncture for the determination of BDNF, Tau, NFL and TrkB in CSF. Control Group: 45 controls will be selected from the samples present in the existing Biobank with CSF and plasma samples available in Montpellier, France. MRI data will be centralized and processed by the Imaging Institute I2FH Montpellier University Hospital.
02

Conditions studied

  • Huntington Disease

Browse trials for

Keywords

  • Huntington Disease
  • CSF
  • Biomarkers
  • BDNF
  • P42
03

In context

Huntington Disease

285 studies on the registry are indexed under Huntington Disease; 49 are open to participants now.

This study's planned enrollment of 135 is above the median of 40 across 203 interventional studies indexed under Huntington Disease.

Browse Huntington Disease studies →

Lead sponsor

University Hospital, Montpellier is the lead sponsor of 1,244 studies on the registry; 225 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  • General inclusion criteria:

    • age ≥ 18 years-old
    • national health insurance cover
  • Patients inclusion criteria:

    • genetically confirmed Huntington's disease diagnosis (≥ 35 CAG repeat in HTT gene exon 1)
    • written informed consent
    • only for patients "with lumbar puncture (LP)": patient agreement for LP
  • Control inclusion criteria:

    • anterior LP for medical reason with consent for biobank "Neuro" with following samples present in this biobank : 2 mL blood + 0.5 mL plasma + 0.5 mL cerebrospinal fluid
    • information and non-opposition for the finality of this biobank
    • paired by age with a patient (+/- 5 years difference)

Exclusion criteria

Exclusion Criteria:

  • General exclusion criteria:

    • protected by law
  • Patients exclusion criteria:

    • Huntington's disease stage too Evolved that may interfere with cognitive evaluations or MRI
    • contraindications to brain MRI
    • only for patients "with LP": contraindications to LP
    • incapacity to give informed consent
  • Control exclusion criteria:

    • neurodegenerative of inflammatory central nervous system pathology
05

Study design

Phase
Not applicable
Primary purpose
Basic science
Allocation
Non-randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
135 participants (estimated)

Study arms

  • Active comparator
    Patient with LP

    Huntington's disease patients who agreed to have LP

    Procedure: Brain MRI · Procedure: Lumbar Punction · Genetic: Blood sample · Other: Cognitive evaluation

  • Active comparator
    Patient without LP

    Huntington's disease patient with contraindication to LP or refusal to have LP

    Procedure: Brain MRI · Genetic: Blood sample · Other: Cognitive evaluation

  • No intervention
    Control Group

    Retrospective study with biologic samples of patients without Huntington's disease

Interventions

  • ProcedureBrain MRI

    Multimodal brain MRI: volumetry, diffusion tensor, functional rest MRI

  • ProcedureLumbar Punction

    Analysis of BDNF, Tau, NFL and TrkB in cerebrospinal fluid

  • GeneticBlood sample

    Analysis of BDNF, Tau, NFL, and Val66Met polymorphism

  • OtherCognitive evaluation

    Symbol Digit Modality Test (SDMT), Stroop test, Trail Making Test, Empan

06

What researchers measure

Primary outcomes

  1. BDNF(csf) in HD subjects compared to age-matched control subjects (+/- 5 years)

    centralized ELISA assay with Simoa - Quanterix kit technology at the Laboratory of Clinical Proteomic Biochemistry of Montpellier, France.

    Time frame: Inclusion

Secondary outcomes

  1. plasmatic BDNF in HD subjects vs controls

    Time frame: Inclusion

  2. Correlation between BDNF in CSF and BDNF in plasma

    Time frame: Inclusion

  3. Correlation between BDNF and disease parameters

    Correlation between BDNF in CSF or plasma and: disease severity, assessed through a Scale that quantifies the severity of the disease, the disease burden formula \[(n.CAG-35.5) x age\], the Total Functional Capacity functional scale (TFC), and cognitive scales (Symbol Digit Modalities Test, STROOP test, Trail Making test A and B, direct and indirect digit span); - MRI brain imaging: cerebral and striatal atrophy by morphological imaging, functional resting state MRI, and anatomical connectivity by diffusion tensor imaging

    Time frame: Inclusion

  4. Total Tau and NFL levels in plasma and CSF in HD subjects vs control subjects

    Time frame: Inclusion

  5. TrkBcsf level in subjects with HD vs control subjects

    Time frame: Inclusion

07

Study locations

1 of 1 sites recruiting
  • University Hospital of Montpellier
    Montpellier, France
    Recruiting
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Feb 12, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT04012411
Lead sponsor
University Hospital, Montpellier
Responsible party
Sponsor
First posted
Jul 9, 2019
Start date
Mar 3, 2020
Primary completion
Sep 2027 (estimated)
Completion
Sep 2027 (estimated)
Last update
Feb 12, 2026

Study contacts

Cecilia MARELLI, MD
Contact
c-marelli@chu-montpellier.fr
+33(0)467336029

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Interested in this study?

Eligibility is decided by the study team. Share this record with your doctor or contact the team directly.

Contact study team

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion