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Amyotrophic Lateral Sclerosis (ALS)NCT07844590

Developing New Ways to Detect Respiratory Impairment Early in ALS

An observational study of Amyotrophic Lateral Sclerosis (ALS), run by Thomas Jefferson University at 1 site in United States.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
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Trial summary

The goal of this observational study is to develop new ways to detect early changes associated with amyotrophic lateral sclerosis (ALS), also known as Lou Gehrig's disease. The study will examine whether changes in breathing, magnetic resonance imaging (MRI) of the brainstem and spinal cord, and blood markers can… Read more about this study

Who is it for?
Ages 18 years and olderHealthy volunteers can take part
Conditions the study is for
Amyotrophic Lateral Sclerosis (ALS)
How many people
70 participants
Where
1 siteUnited States
Study dates
Sep 2026to 31 Mar 2028
Phase
Observational
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • Healthy volunteers accepted
  • Adult, Older adult

Study population: The study population will include adults with symptomatic ALS, asymptomatic or presymptomatic individuals with genetic variants associated with ALS, and healthy age- and sex-matched controls. Participants with ALS or genetic risk for ALS will be recruited from Thomas Jefferson University and other ALS patient inventories and referral sources.

Who may be able to join

  • Symptomatic participants with ALS must have an ALS Functional Rating Scale-Revised (ALSFRS-R) score of 47/48 or less at the time of recruitment.
  • Asymptomatic/presymptomatic participants must have a pathogenic C9orf72 expansion of at least 25 repeats or a similar genetic abnormality known to be associated with ALS.
  • Healthy control participants must have no clinically identifiable neurological deficits based on medical history and screening. -

Who cannot join

  • Any safety concern or contraindication to MRI based on MRI safety screening.
  • Healthy control participants who do not pass the neurological screening.
  • Pregnancy.
  • Metal implants above the waist, including cardiac pacemakers or brain, neck, cervical, or thoracic implants.
  • Neurocognitive impairment.
  • Inability or unwillingness to provide informed consent.
  • Younger than 18 years of age.

Trial locations and contacts

1 site in 1 country. Contact the study team or a site near you to ask about taking part.

Jayakrishnan Nair, PhD, PT contact

352-871-5888

Jayakrishnan.Nair@jefferson.edu

United States1 site, 1 recruiting
  • Thomas Jefferson University - Center City

    Philadelphia, Pennsylvania, 19107

    Dana Johnson, DPT, 215-326-9153, Dana.Johnson@jefferson.edu

    Jayakrishnan Nair, PhD, PT, 352-871-5888, Jayakrishnan.Nair@jefferson.edu

    Recruiting

Other trials in United States

About this study

Official title: Early Detection of Respiratory Impairments in ALS: A Novel Diagnostic Approach

The goal of this observational study is to develop new ways to detect early changes associated with amyotrophic lateral sclerosis (ALS), also known as Lou Gehrig's disease. The study will examine whether changes in breathing, magnetic resonance imaging (MRI) of the brainstem and spinal cord, and blood markers can identify early signs of ALS before major physical changes occur.

The main questions the study aims to answer are:

Read more
  • Can changes in automatic breathing help identify early ALS-related changes?
  • Can breathing measures distinguish people with ALS from people without ALS?
  • Do people with genetic risk for ALS who show changes in breathing also have changes in the brainstem and spinal cord or higher levels of blood markers associated with nerve damage?

Participants will complete breathing and muscle function tests, an MRI scan of the brainstem and spinal cord, and blood testing. The study will include people with ALS, people with genetic risk for ALS who do not yet have symptoms, and healthy adults for comparison.

Keywords
Amyotrophic lateral sclerosis, Early diagnosis, Respiratory function, Respiratory impairment, Respiratory biomarkers, Biomarkers, Neuroimaging, Magnetic resonance imaging, Brainstem, Spinal cord, Neurofilament light chain, Genetic risk, Presymptomatic amyotrophic lateral sclerosis, Motor neuron disease, Respiratory muscle function, Lou Gehrig's disease, automatic breathing, respiratory control, respiratory weakness, respiratory muscle strength
Medical subject headings
Amyotrophic Lateral Sclerosis, Disease, Respiratory Aspiration, Respiratory Insufficiency, Charcot-Marie-Tooth disease, Type 1F, Motor Neuron Disease, Hypoxia, Hypercapnia

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

Study groups in NCT07844590
Study groupRoleWhat they receive
Symptomatic Amyotrophic Lateral SclerosisParticipants with symptomatic amyotrophic lateral sclerosis (ALS), including familial or sporadic ALS, who have clinical evidence of disease. This group will undergo study assessments to characterize respiratory function and biomarkers associated with ALS.
Asymptomatic/Presymptomatic ALS Gene CarriersParticipants who carry a genetic variant associated with amyotrophic lateral sclerosis but do not have clinical symptoms or functional deficits associated with ALS. This group will be evaluated for early or subclinical changes in respiratory function and other biomarkers associated with ALS.
Healthy ControlsNeurologically healthy participants without clinically identifiable neurological deficits who will serve as a comparison group for the study assessments.

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Diagnostic Accuracy of the Automatic Breathing Impairment Risk Score (P0.1 + Chemosensitivity) for Detecting ALS-Related Respiratory Dysfunction

    A linear prediction risk score combining airway occlusion pressure at 0.1 seconds (P0.1) and chemosensitivity will be developed to distinguish symptomatic ALS participants with respiratory dysfunction from healthy controls. Diagnostic performance of the risk score will be evaluated using the area under the receiver operating characteristic curve (ROC-AUC), and an optimal cutoff will be determined. The resulting cutoff will subsequently be used to identify subclinical respiratory impairment in asymptomatic/presymptomatic ALS gene carriers.

    Measured: During the single study visit

Secondary outcomes (6)
  1. Fractional Anisotropy of the Brainstem and Cervical Spinal Cord

    Fractional anisotropy (FA) will be derived from diffusion tensor imaging of the brainstem and cervical spinal cord to evaluate microstructural abnormalities associated with ALS. FA will be compared among healthy controls and asymptomatic/presymptomatic ALS gene carriers who test positive or negative for automatic breathing impairment.

    Measured: During the single study visit

  2. Axial Diffusivity of the Brainstem and Cervical Spinal Cord

    Axial diffusivity will be derived from diffusion tensor imaging of the brainstem and cervical spinal cord to evaluate microstructural abnormalities associated with ALS. Measurements will be compared among healthy controls and asymptomatic/presymptomatic ALS gene carriers who test positive or negative for automatic breathing impairment.

    Measured: During the single study visit

  3. Radial Diffusivity of the Brainstem and Cervical Spinal Cord

    Radial diffusivity will be derived from diffusion tensor imaging of the brainstem and cervical spinal cord to evaluate microstructural abnormalities associated with ALS. Measurements will be compared among healthy controls and asymptomatic/presymptomatic ALS gene carriers who test positive or negative for automatic breathing impairment.

    Measured: During the single study visit

  4. Mean Diffusivity of the Brainstem and Cervical Spinal Cord

    Mean diffusivity will be derived from diffusion tensor imaging of the brainstem and cervical spinal cord to evaluate microstructural abnormalities associated with ALS. Measurements will be compared among healthy controls and asymptomatic/presymptomatic ALS gene carriers who test positive or negative for automatic breathing impairment.

    Measured: During the single study visit

  5. Plasma Neurofilament Light Chain (Nf-L) Level

    Neurofilament light chain (Nf-L) levels in plasma will be measured as a blood-based marker of neurodegeneration. Plasma Nf-L levels will be compared among healthy controls and asymptomatic/presymptomatic ALS gene carriers who test positive or negative for automatic breathing impairment to determine whether respiratory impairment is associated with greater evidence of neurodegeneration.

    Measured: During the single study visit

  6. Serum Neurofilament Light Chain (Nf-L) Level

    Neurofilament light chain (Nf-L) levels in serum will be measured as a blood-based marker of neurodegeneration. Serum Nf-L levels will be evaluated in relation to automatic breathing impairment and compared across study groups as an additional blood-based biomarker of ALS-related neurodegeneration.

    Measured: During the single study visit.

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted28 Sep 2026
  2. Study startSep 2026 (estimated)
  3. Primary completion31 Mar 2028 (estimated)
  4. Study completion31 Mar 2028 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Observational model
Cohort
Time perspective
Prospective
Enrolment
70 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07844590
Sponsor's protocol ID
22D.834
Other IDs
1R21NS145175-01A1
Status last verified
Sep 2026
First submitted
21 Sep 2026
Last updated
28 Sep 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
Yes: De-identified individual participant data underlying the results reported in study publications will be shared. Data may include demographic and clinical data, functional respiratory measurements, brainstem and spinal cord MRI data, and blood biomarker data, including neurofilament light chain measurements. Data will be shared without direct participant identifiers and in accordance with applicable data use agreements and institutional requirements.

Publications

  • Raz E, Bester M, Sigmund EE, Tabesh A, Babb JS, Jaggi H, Helpern J, Mitnick RJ, Inglese M. A better characterization of spinal cord damage in multiple sclerosis: a diffusional kurtosis imaging study. AJNR Am J Neuroradiol. 2013 Sep;34(9):1846-52. doi: 10.3174/ajnr.A3512. Epub 2013 Apr 11.

    PubMed 23578677
  • Tabesh A, Jensen JH, Ardekani BA, Helpern JA. Estimation of tensors and tensor-derived measures in diffusional kurtosis imaging. Magn Reson Med. 2011 Mar;65(3):823-36. doi: 10.1002/mrm.22655. Epub 2010 Oct 28.

    PubMed 21337412
  • De Leener B, Levy S, Dupont SM, Fonov VS, Stikov N, Louis Collins D, Callot V, Cohen-Adad J. SCT: Spinal Cord Toolbox, an open-source software for processing spinal cord MRI data. Neuroimage. 2017 Jan 15;145(Pt A):24-43. doi: 10.1016/j.neuroimage.2016.10.009. Epub 2016 Oct 5.

    PubMed 27720818
  • Laveneziana P, Albuquerque A, Aliverti A, Babb T, Barreiro E, Dres M, Dube BP, Fauroux B, Gea J, Guenette JA, Hudson AL, Kabitz HJ, Laghi F, Langer D, Luo YM, Neder JA, O'Donnell D, Polkey MI, Rabinovich RA, Rossi A, Series F, Similowski T, Spengler CM, Vogiatzis I, Verges S. ERS statement on respiratory muscle testing at rest and during exercise. Eur Respir J. 2019 Jun 13;53(6):1801214. doi: 10.1183/13993003.01214-2018. Print 2019 Jun.

    PubMed 30956204
  • American Thoracic Society/European Respiratory Society. ATS/ERS Statement on respiratory muscle testing. Am J Respir Crit Care Med. 2002 Aug 15;166(4):518-624. doi: 10.1164/rccm.166.4.518. No abstract available.

    PubMed 12186831
  • Shefner JM, Al-Chalabi A, Baker MR, Cui LY, de Carvalho M, Eisen A, Grosskreutz J, Hardiman O, Henderson R, Matamala JM, Mitsumoto H, Paulus W, Simon N, Swash M, Talbot K, Turner MR, Ugawa Y, van den Berg LH, Verdugo R, Vucic S, Kaji R, Burke D, Kiernan MC. A proposal for new diagnostic criteria for ALS. Clin Neurophysiol. 2020 Aug;131(8):1975-1978. doi: 10.1016/j.clinph.2020.04.005. Epub 2020 Apr 19. No abstract available.

    PubMed 32387049
  • Ilieva H, Vullaganti M, Kwan J. Advances in molecular pathology, diagnosis, and treatment of amyotrophic lateral sclerosis. BMJ. 2023 Oct 27;383:e075037. doi: 10.1136/bmj-2023-075037.

    PubMed 37890889
  • Middleton DM, Shahrampour S, Krisa L, Liu W, Nair G, Jacobson S, Conklin CJ, Alizadeh M, Faro SH, Mulcahey MJ, Mohamed FB. Correlations of diffusion tensor imaging and clinical measures with spinal cord cross-sectional area measurements in pediatric spinal cord injury patients. J Spinal Cord Med. 2023 Nov;46(6):950-957. doi: 10.1080/10790268.2021.1997027. Epub 2021 Dec 2.

    PubMed 34855576
  • Shahrampour S, De Leener B, Alizadeh M, Middleton D, Krisa L, Flanders AE, Faro SH, Cohen-Adad J, Mohamed FB. Atlas-Based Quantification of DTI Measures in a Typically Developing Pediatric Spinal Cord. AJNR Am J Neuroradiol. 2021 Sep;42(9):1727-1734. doi: 10.3174/ajnr.A7221. Epub 2021 Jul 29.

    PubMed 34326104
  • Fisher J, Alizadeh M, Middleton D, Matias CM, Mulcahey MJ, Calhoun-Thielen C, Mohamed FB, Krisa L. Brain White Matter Abnormality Induced by Chronic Spinal Cord Injury in the Pediatric Population: A Preliminary Tract-based Spatial Statistic Study. Top Spinal Cord Inj Rehabil. 2021 Fall;27(4):1-13. doi: 10.46292/sci20-00018. Epub 2021 Jun 4.

    PubMed 34866884
  • Alizadeh M, Manmatharayan AR, Johnston T, Thalheimer S, Finley M, Detloff M, Sharan A, Harrop J, Newburg A, Krisa L, Mohamed FB. Graph theoretical structural connectome analysis of the brain in patients with chronic spinal cord injury: preliminary investigation. Spinal Cord Ser Cases. 2021 Jul 17;7(1):60. doi: 10.1038/s41394-021-00424-3.

    PubMed 34274953
  • Foust KD, Salazar DL, Likhite S, Ferraiuolo L, Ditsworth D, Ilieva H, Meyer K, Schmelzer L, Braun L, Cleveland DW, Kaspar BK. Therapeutic AAV9-mediated suppression of mutant SOD1 slows disease progression and extends survival in models of inherited ALS. Mol Ther. 2013 Dec;21(12):2148-59. doi: 10.1038/mt.2013.211. Epub 2013 Sep 6.

    PubMed 24008656
  • Ilieva HS, Yamanaka K, Malkmus S, Kakinohana O, Yaksh T, Marsala M, Cleveland DW. Mutant dynein (Loa) triggers proprioceptive axon loss that extends survival only in the SOD1 ALS model with highest motor neuron death. Proc Natl Acad Sci U S A. 2008 Aug 26;105(34):12599-604. doi: 10.1073/pnas.0805422105. Epub 2008 Aug 21.

    PubMed 18719118
  • Nair J, Welch JF, Marciante AB, Hou T, Lu Q, Fox EJ, Mitchell GS. APOE4, Age, and Sex Regulate Respiratory Plasticity Elicited by Acute Intermittent Hypercapnic-Hypoxia. Function (Oxf). 2023 Jun 13;4(5):zqad026. doi: 10.1093/function/zqad026. eCollection 2023.

    PubMed 37575478
  • Welch JF, Nair J, Argento PJ, Mitchell GS, Fox EJ. Acute intermittent hypercapnic-hypoxia elicits central neural respiratory motor plasticity in humans. J Physiol. 2022 May;600(10):2515-2533. doi: 10.1113/JP282822. Epub 2022 Apr 28.

    PubMed 35348218

Questions about this trial

What is this clinical trial studying?

An observational study of Amyotrophic Lateral Sclerosis (ALS), run by Thomas Jefferson University at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 3 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: looking for participants now, as of the sponsor's last update on 28 Sep 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact Jayakrishnan Nair, PhD, PT (352-871-5888, Jayakrishnan.Nair@jefferson.edu), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Diagnostic Accuracy of the Automatic Breathing Impairment Risk Score (P0.1 + Chemosensitivity) for Detecting ALS-Related Respiratory Dysfunction (time frame: During the single study visit). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT07844590, which also lists 59 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 28 Sep 2026.

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