Denne side blev automatisk oversat, og nøjagtigheden af ​​oversættelsen er ikke garanteret. Der henvises til engelsk version for en kildetekst.

PKU Microtablets Case Studies

23. juni 2026 opdateret af: Nutricia UK Ltd

Evaluating the Adherence, Tolerance, Acceptability and Safety of a New Amino Acid Based, Microtablet Protein Substitute in PKU: a Case Study Series

Phenylalanine (Phe) free protein substitutes are typically presented in ready to drink liquid or powder format and are made up with water to a set volume. Despite recent advancements related to the taste, scent and texture of commercially available protein substitutes, a proportion of PKU patients choose to consume tablet-based protein substitutes. Protein substitutes in tablet format may help overcome taste, scent and texture concerns associated with powdered and liquid preparations. Indeed, previous research has shown that protein substitute tablets are an effective strategy to manage PKU in children, teenagers and adults. Nonetheless, the daily burden and discipline required often impedes compliance, especially alongside the restrictive low-protein diet. Achieving compliance with multivitamin supplements when given alongside protein substitutes therefore becomes especially challenging. This is particularly true for adolescent, adult and maternal populations.

PKU Microtablets have recently been developed. PKU Microtablets are a new phenylalanine-free tablet protein substitute combined with vitamins, minerals and trace elements. As patient acceptability is fundamental to the successful use of any protein substitute, investigation is needed to assess the compliance, tolerance and acceptability of PKU Microtablets as part of a low phenylalanine dietary regimen in PKU patients.

This series of case-studies aims to evaluate the gastrointestinal tolerance, acceptability, compliance, and safety of this protein substitute in both adults and children from 4 years. These case studies will last 29 days in total, including a 1-day baseline period followed by a 28-day intervention period. The case studies will be conducted across multiple specialist metabolic centres in the UK.

Studieoversigt

Status

Ikke rekrutterer endnu

Betingelser

Intervention / Behandling

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

20

Fase

  • Ikke anvendelig

Kontakter og lokationer

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

Studiekontakt

Studiesteder

  • Det Forenede Kongerige
      • Bristol, Det Forenede Kongerige
        • University Hospitals Bristol and Weston NHS Foundation Trust

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

  • Barn
  • Voksen
  • Ældre voksen

Tager imod sunde frivillige

Ingen

Beskrivelse

Inclusion Criteria:

  • Male or female
  • Over 4 years of age
  • Patients diagnosed with any phenotype of PKU characterised by hyperphenylalaninaemia
  • Have been compliant in taking at least one protein substitute, providing at least 20g protein equivalent, for at least 1 month prior to trial commencement
  • Have a prescribed daily phenylalanine allowance for PKU
  • Written or electronic informed consent from patient, and/or from parent/caregiver if applicable
  • Participants who are anticipated to be able to take at least 20g protein equivalent of the case study product per day

Exclusion Criteria:

  • Pregnant or lactating
  • Requiring parenteral nutrition
  • Major hepatic or renal dysfunction
  • Participation in other studies within 1 month prior to entry of this study
  • Allergy to any of the study product ingredients
  • Investigator concern around willingness/ability of patient or parent/caregiver to comply with protocol requirement
  • Treatment with Sapropterin dihydrochloride for less than 6 months

Studieplan

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

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Grundvidenskab
  • Tildeling: N/A
  • Interventionel model: Enkelt gruppeopgave
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: PKU Microtabet intervention product
Dietary Supplement: PKU Microtablet intervention product
Kosttilskud: PKU Microtablet protein substitute
PKU Microtablet intervention product

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Gastro-intetsinal tolerance
Tidsramme: Measured at baseline (day 1) and end of intervention (day 29)
GI tolerance will be recorded by the Dietitian at baseline on Day 1 and at the end of the case study period (Day 29). GI tolerance will be recorded using a standardised questionnaire to capture perceived severity (none, mild, moderate or severe) of common gastrointestinal symptoms (diarrhoea, constipation, bloating, abdominal discomfort, vomiting and nausea).
Measured at baseline (day 1) and end of intervention (day 29)

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Overholdelse
Tidsramme: Målt ved baseline (dag 1) og afslutningen af ​​interventionen (dag 29)
Overholdelse af det anbefalede indtag af patienternes sædvanlige proteinstatus (under baseline) og med undersøgelsesproduktet (i casestudieperioden) vurderes af diætist ved baseline (dag 1) og i slutningen af ​​casestudiet (dag 29). Patienter og/eller forældre/plejere vil blive bedt om at huske mængden af ​​deres proteinstatning, der er taget i løbet af det sidste 24 timer og i gennemsnit. Dette vil blive sammenlignet med det anbefalede beløb for at blive konsumeret af deres diætist. Det daglige beløb, der er foreskrevet af den diætist, der administrerer patientens pleje, vil blive registreret i starten af ​​casestudiet, og eventuelle ændringer i denne recept under casestudien vil også blive bemærket.
Målt ved baseline (dag 1) og afslutningen af ​​interventionen (dag 29)
Acceptability
Tidsramme: Measured at baseline (day 1) and end of intervention (day 29)
Acceptability (ease of use and liking) of the patients' usual protein substitute and the study product will be assessed by the Dietitian at baseline (Day 1) and the end of the case study period (Day 29) by a series of questions posed to the patient and/or parent/caregiver. Acceptability questions will assess the patient's sensory experience, ease of use, tolerance, and overall self-rated acceptability on a 5-point Likert scale from Terrible (worst) to Great (best).
Measured at baseline (day 1) and end of intervention (day 29)
Blood Phe and Tyrosine
Tidsramme: Day 2 (baseline) and day 29 (end of intervention)
Participants will be required to provide a total of two fasting fingerprick blood samples as dried blood spots; one on the first day of the intervention period (Day 2) before consuming any of the case study product, and one at the end of the intervention period (Day 29). These tests will be conducted in addition to any usual blood tests the participants conduct as part of their usual disease management, which vary in frequency with the age of the participant and the local policy. Dietitians will also be asked to describe the patient's metabolic control during the case study period.
Day 2 (baseline) and day 29 (end of intervention)
Anthropometry - Height
Tidsramme: Day 1 (baseline) and day 29 (end of intervention)
Height will be measured, using standard methods, recorded to the nearest 0.1cm (at baseline only) and used to calculate body mass index (BMI, kg/m2).
Day 1 (baseline) and day 29 (end of intervention)
Anthropometry - Weight
Tidsramme: Day 1 (baseline) and day 29 (end of intervention)
For safety purposes, at baseline (Day 1) and at the end of the case study (Day 29), body weight (kg) will be measured where possible using standard methods, recorded to the nearest 0.1kg using a weighing scale without heavy clothing.
Day 1 (baseline) and day 29 (end of intervention)
Patient History
Tidsramme: Day 1 (baseline) and day 29 (end of intervention)
A detailed patient history will be recorded at baseline to assess previous compliance to protein substitutes, relevant medical and clinical issues, medication(s) prescribed, and any other relevant information related to the patient's condition or dietary management.
Day 1 (baseline) and day 29 (end of intervention)
Safety/ Adverse events
Tidsramme: Throughout the case study series (day 1 to day 29).
All adverse events will be recorded, throughout the case study.
Throughout the case study series (day 1 to day 29).

Samarbejdspartnere og efterforskere

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

Sponsor

Nutricia UK Ltd

Efterforskere

  • Studieleder: Gary Hubbard, Dr, Nutricia, Inc.

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 (Anslået)

1. juli 2026

Primær færdiggørelse (Anslået)

1. juni 2027

Studieafslutning (Anslået)

1. juli 2027

Datoer for studieregistrering

Først indsendt

17. juni 2026

Først indsendt, der opfyldte QC-kriterier

23. juni 2026

Først opslået (Faktiske)

26. juni 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

26. juni 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

23. juni 2026

Sidst verificeret

1. juni 2026

Mere information

Begreber relateret til denne undersøgelse

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • PKUM2025

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

INGEN

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

Studerer et amerikansk FDA-reguleret lægemiddelprodukt

Ingen

Studerer et amerikansk FDA-reguleret enhedsprodukt

Ingen

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .

Abonner