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Prospective Longitudinal Multicentric Study to Measure Limb Movement in Patients With FGFR3-related Skeletal Dysplasia (SKY-MOT3)

18. september 2026 opdateret af: SYSNAV

Prospective Longitudinal Multicentric Study to Measure Limb Movement in Patients With FGFR3-related Skeletal Dysplasia Using Syde®

The study aims to identify which Syde®-derived digital outcomes are reliable in FGFR3-related Skeletal Dysplasia. This requires to set-up a natural history study to measure limb movements in patients with ACH or HCH.

Studieoversigt

Status

Rekruttering

Betingelser

Undersøgelsestype

Observationel

Tilmelding (Anslået)

140

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

Studiesteder

      • Liège, Belgien, 4000
        • Ikke rekrutterer endnu
        • Hôpital de la Citadelle
        • Ledende efterforsker:
          • Julie HARVENGT
      • Liège, Belgien, 4000
        • Ikke rekrutterer endnu
        • CHU de Liège
        • Ledende efterforsker:
          • Julie HARVENGT
      • London, Det Forenede Kongerige
        • Ikke rekrutterer endnu
        • Myriad Trials
        • Ledende efterforsker:
          • Melita IRVING
      • Paris, Frankrig, 75015
        • Rekruttering
        • Hopital Necker
        • Kontakt:
        • Ledende efterforsker:
          • Genevieve Baujat
        • Underforsker:
          • Soo Kyung Kim

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

2 år til 65 år (Barn, Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Prøveudtagningsmetode

Ikke-sandsynlighedsprøve

Studiebefolkning

France: Participants will be recruited from the patient registry of the Centre de Référence des Maladies Osseuses Constitutionnelles located at Necker Hospital / IMAGINE Institute. The APPT association (Association des Personnes de Petite Taille) will also help with the recruitment through flyers distribution. All visits will take place at Necker Hospital.

Belgium: Participants will be recruited from the Maladies Rares Génétiques Ostéo-articulaires (MaRGOs) patient registry located at Centre Hospitalier Universitaire (CHU) de Liège, with additional recruitment through Centre Hospitalier Régional (CHR) de Liège and support from the Solidarité Wallonne des Personnes de Petite Taille association through flyer distribution. All visits will take place at CHU de Liège and CHR de Liège.

United Kingdom: Participants will be recruited from the Site Research Waiting List

Beskrivelse

Inclusion Criteria:

1.a. Aged 2 years old or older at the time of consent (France and Belgium)

  1. b. Aged between 2 years old and < 17 years old at the time of consent (United Kingdom)

  2. Written informed consent obtained:

    1. From the parent(s) or legal guardian(s) for participants under 18 years old.
    2. From participants 18 years old and older.
  3. Affiliated to, or beneficiary of a social security category (not applicable for the United Kingdom)

  4. Able to walk unassisted for at least 10 meters.

  5. Genetically confirmed diagnosis with one pathogenic variant (ACMG class IV & V) of achondroplasia or hypochondroplasia.

  6. Participant (and caregivers for participants under 18 years old) willing and able to comply with all study procedures including: questionnaires, Syde® related procedures

Exclusion Criteria:

  1. Subjects who have short stature condition other than ACH/HCH.
  2. Presence of cognitive disorders that limit their understanding of the data collection process (training of device use and 4-week recording periods every 6 months, device return at the end of the study), the implication of the study and consent.
  3. Presence or history of any concurrent disease or condition that could interfere with study participation, impact pediatric growth, affect motor or balance or gait function (such as neurological, endocrine, infectious, allergic, osteoarthritis, or inflammatory), assessed by the investigator.
  4. Females who are pregnant, or planning to become pregnant during the study duration.
  5. Body Mass Index = 35 kg/m2.
  6. Recent upper and/or lower limbs injury (trauma/fracture or surgery) in the 6 months preceding inclusion.
  7. Prior limb lengthening surgery or planned or expected to have limb lengthening surgery while enrolled in the study.
  8. Presence of guided growth hardware (such as 8-plates) or planned orthopedic surgeries during the study.
  9. Vulnerable patient (guardianship, curatorship or safeguarding of justice), unable to provide informed consent or who is unable to express their consent.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Observationsmodeller: COHORT
  • Tidsperspektiver: PROSPECTIVE

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Reliability of digital endpoint derived from Syde® assessed by the Intra-Class Correlation (ICC) for each recording period timepoint.
Tidsramme: 12 months

reliability assessed by the ICC (Intra-Class Correlation)for each recording period timepoint (baseline, 6 months, 12 months)

12 months

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
number of participants reaching 180 hours of recording during the recording periods defined in the protocol
Tidsramme: 12 months

Number of patients reaching 180 hours of recordings during the recording periods defined in the protocol (supposed optimal threshold for Syde®-derived digital endpoint computation) at baseline, 6 months, 12 months

12 months
System Usability Score (F-SUS) score at 6 months of Syde® use
Tidsramme: 6 months

System Usability Score (SUS) at 6 months. The System Usability Scale is a 10-item questionnaire . It is a simple tool to measure the usability of an interactive system and it is widely used. For each item, the user is asked to express their level of agreement or disagreement from 1 (strongly disagree) and 5 (strongly agree).

6 months
Correlation between digital endpoints derived from Syde® and 6-minutes walk test (6MWT)
Tidsramme: 12 months

Correlation at baseline and at different timepoints between Syde® derived digital endpoint and 6MWT

12 months
Correlation between digital endpoints derived from Syde® and growth parameters
Tidsramme: 12 months

Correlation at baseline and at different timepoints between Syde® derived digital endpoints and annualized growth velocity, height Z-score, body proportion ratios

12 months
Correlation between digital endpoints derived from Syde® and Patient-reported Outcomes (PROs)
Tidsramme: 12 months

Correlation at baseline and at different timepoints between Syde® derived digital endpoints and PROs

12 months
Longitudinal Change in digital endpoints derived from Syde®
Tidsramme: 12 months

Change from baseline in digital endpoints derived from Syde® at 6 and 12 months

12 months
Syde® movement reconstruction accuracy compared to Optical Motion Capture measures.
Tidsramme: Baseline

Stride detection accuracy of Syde®, stride length and stride velocity accuracy of Syde® and upper limb measures, compared to Optical Motion Capture measures

Baseline
Qualitative interview exploring limitations on mobility and impact on daily life
Tidsramme: baseline

caregiver and/or participant qualitative interview exploring limitations on mobility daily life

baseline

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Efterforskere

  • Ledende efterforsker: Genevieve Baujat, Hopital Necker

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

6. februar 2026

Primær færdiggørelse (Anslået)

1. december 2028

Studieafslutning (Anslået)

1. december 2028

Datoer for studieregistrering

Først indsendt

28. januar 2026

Først indsendt, der opfyldte QC-kriterier

28. januar 2026

Først opslået (Faktiske)

5. februar 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

23. september 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

18. september 2026

Sidst verificeret

1. september 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • PR5030-108
  • 2025-A01608-41 (Anden identifikator: ANSM)

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

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Ingen

Studerer et amerikansk FDA-reguleret enhedsprodukt

Ingen

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