Évaluer l'effet de la supplémentation orale en GlcNAc chez les patients présentant un déficit en NGLY1
In patients with NGLY1-CDDG, the disorder can lead to eye damage due to not being able to produce enough tears. This study is being done to see if the dietary supplement, GlcNAc, improves tear production in patients with NGLY1-CDDG.
Aperçu de l'étude
Statut
Les conditions
Intervention / Traitement
Description détaillée
This study is a multicenter randomized, double-blind, placebo-controlled trial of GlcNAc supplementation for improvement of tear production in NGLY1-CDDG. Clinical history and screening data will be reviewed to determine subject eligibility. If a subject is already on GlcNAc, a washout period of 1 month will be required prior to consent and randomization. Interested subjects who have a molecularly confirmed diagnosis of NGLY1-CDDG will be consented. Baseline data will be collected prior to randomization at treatment initiation. Subjects will then be randomized to placebo or GlcNAc. They will be administered weight-dependent doses of GlcNAc or an equivalent volume of placebo enterally for 6 weeks, followed by open label weight-dependent doses of GlcNAc for 6 weeks. A visit for evaluation and collection of lab samples will be conducted at 6 and 12 weeks.
Type d'étude
Inscription (Réel)
Phase
- Phase 2
Contacts et emplacements
Lieux d'étude
-
-
Pennsylvania
-
Philadelphia, Pennsylvania, États-Unis, 19104
- Children's Hospital of Philadelphia
-
-
Washington
-
Seattle, Washington, États-Unis, 98105
- Seattle Children's Hospital
-
-
Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
Accepte les volontaires sains
Sexes éligibles pour l'étude
La description
Inclusion Criteria:
- Previously molecularly confirmed NGLY1-CDDG
- Between the ages of 1 year old to 60 years old
- Parent or legal guardian available to provide consent on behalf of minor subjects or adult subjects who are unable to give informed consent due to developmental disabilities. Willingness of subject or legal guardian to provide consent.
- Non-pregnant, non-lactating female subjects of childbearing potential who are heterosexually active must agree to use a highly effective method of contraception for the duration of the study. A highly effective method of birth control is defined as one that results in a low failure rate (i.e., <1% per year) when used consistently and correctly, such as oral/injectable/inserted/implanted/transdermal contraceptives, condom with diaphragm, condom with spermicide, diaphragm with spermicide, intrauterine hormone- releasing system, or intrauterine device (IUD), or sexual abstinence. Contraception is not required where at least 6 weeks have passed since sterilization, defined as females having undergone one of the following surgeries: hysterectomy, bilateral tubal ligation or occlusion, bilateral oophorectomy, or bilateral salpingectomy; and males who are vasectomized. Contraception is not required where females are postmenopausal (defined as 12 consecutive months of spontaneous amenorrhea and age ≥51 years)..
Exclusion Criteria
- Hypersensitivity to any of the components of the placebo
- History of treatment with GlcNAc within 28 days of Visit 1
- Participation in another therapeutic trial - the subject will not be permitted to participate in any other drug trial during the blinded phase and during the 28 days prior to Visit 1
- Shellfish allergy
- Planned eye surgery within 3 months of enrollment
- • Females that are pregnant, nursing or less than 6 months postpartum or attempting to conceive
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
- Objectif principal: Traitement
- Répartition: Randomisé
- Modèle interventionnel: Affectation parallèle
- Masquage: Tripler
Armes et Interventions
Groupe de participants / Bras |
Intervention / Traitement |
|---|---|
|
Expérimental: GlcNAc
GlcNAc powder |
GlcNAc powder - weight-dependent dose |
|
Comparateur placebo: Placebo
Placebo xylose |
Placebo xylose |
Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
|
Difference in tear production from baseline in placebo vs GlcNAc group
Délai: 6 weeks
|
The primary endpoint of the study is the difference in tear production from baseline in individuals with NGLY1-CDDG between the placebo and the GlcNAc group after 6 weeks of blinded therapy, as measured by Schirmer II test which is a tool that helps assess the amount of tears in the eyes. |
6 weeks
|
Mesures de résultats secondaires
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
|
Frequency of eye infections needing treatments
Délai: 6 weeks, 12 weeks
|
Patient/family reported number of eye infections needing treatment in last month after 6 weeks of blinded therapy and at 12 weeks after 6 weeks of open-label administration of GlcNAc. |
6 weeks, 12 weeks
|
|
Frequency of eye redness needing treatments
Délai: 6 weeks, 12 weeks
|
Patient/family reported frequency of eye redness after 6 weeks of blinded therapy and at 12 weeks after 6 weeks of open-label administration of GlcNAc. |
6 weeks, 12 weeks
|
|
Frequency of eye tearing/watering
Délai: 6 weeks, 12 weeks
|
Patient/family reported frequency of eye tearing/watering after 6 weeks of blinded therapy and at 12 weeks after 6 weeks of open-label administration of GlcNAc. |
6 weeks, 12 weeks
|
|
Frequency of light sensitivity
Délai: 6 weeks, 12 weeks
|
Patient/family reported frequency of light sensitivity after 6 weeks of blinded therapy and at 12 weeks after 6 weeks of open-label administration of GlcNAc. |
6 weeks, 12 weeks
|
|
Frequency of wind sensitivity
Délai: 6 weeks, 12 weeks
|
Patient/family reported frequency of wind sensitivity after 6 weeks of blinded therapy and at 12 weeks after 6 weeks of open-label administration of GlcNAc. |
6 weeks, 12 weeks
|
|
Difference in tear production from baseline
Délai: 12 weeks
|
Difference in tear production, as measured by Schirmer II test, at 12 weeks after 6 weeks of open-label administration of GlcNAc. |
12 weeks
|
Collaborateurs et enquêteurs
Parrainer
Les enquêteurs
- Chercheur principal: Eva Morava-Kozicz, MD, PhD, Icahn School of Medicine at Mount Sinai
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude (Réel)
Achèvement primaire (Estimé)
Achèvement de l'étude (Estimé)
Dates d'inscription aux études
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première publication (Réel)
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Réel)
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Plus d'information
Termes liés à cette étude
Termes MeSH pertinents supplémentaires
Autres numéros d'identification d'étude
- CHOP 23-020868
- 8404 (Autre identifiant: FCDGC)
Plan pour les données individuelles des participants (IPD)
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Informations sur les médicaments et les dispositifs, documents d'étude
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