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    Summary
    EudraCT Number:2021-000474-29
    Sponsor's Protocol Code Number:PTC923-MD-003-PKU
    National Competent Authority:Italy - Italian Medicines Agency
    Clinical Trial Type:EEA CTA
    Trial Status:Ongoing
    Date on which this record was first entered in the EudraCT database:2022-05-30
    Trial results View results
    Index
    A. PROTOCOL INFORMATION
    B. SPONSOR INFORMATION
    C. APPLICANT IDENTIFICATION
    D. IMP IDENTIFICATION
    D.8 INFORMATION ON PLACEBO
    E. GENERAL INFORMATION ON THE TRIAL
    F. POPULATION OF TRIAL SUBJECTS
    G. INVESTIGATOR NETWORKS TO BE INVOLVED IN THE TRIAL
    N. REVIEW BY THE COMPETENT AUTHORITY OR ETHICS COMMITTEE IN THE COUNTRY CONCERNED
    P. END OF TRIAL
    Expand All   Collapse All
    A. Protocol Information
    A.1Member State ConcernedItaly - Italian Medicines Agency
    A.2EudraCT number2021-000474-29
    A.3Full title of the trial
    A Phase 3 Study of PTC923 in Subjects with Phenylketonuria
    Studio di fase III su PTC923 in soggetti affetti da fenilchetonuria
    A.3.1Title of the trial for lay people, in easily understood, i.e. non-technical, language
    A Phase 3 Study of PTC923 in Subjects with Phenylketonuria
    Studio di fase III su PTC923 in soggetti affetti da fenilchetonuria
    A.3.2Name or abbreviated title of the trial where available
    PTC923-MD-003-PKU
    PTC923-MD-003-PKU
    A.4.1Sponsor's protocol code numberPTC923-MD-003-PKU
    A.7Trial is part of a Paediatric Investigation Plan No
    A.8EMA Decision number of Paediatric Investigation Plan
    B. Sponsor Information
    B.Sponsor: 1
    B.1.1Name of SponsorPTC THERAPEUTICS INC.
    B.1.3.4CountryUnited States
    B.3.1 and B.3.2Status of the sponsorCommercial
    B.4 Source(s) of Monetary or Material Support for the clinical trial:
    B.4.1Name of organisation providing supportPTC Therapeutics Inc. United States
    B.4.2CountryUnited States
    B.5 Contact point designated by the sponsor for further information on the trial
    B.5.1Name of organisationPTC Therapeutics Inc.
    B.5.2Functional name of contact pointPatient Advocacy
    B.5.3 Address:
    B.5.3.1Street Address100 Corporate Court
    B.5.3.2Town/ citySouth Plainfield
    B.5.3.3Post codeNJ07080
    B.5.3.4CountryUnited States
    B.5.6E-mailMedinfo@ptcbio.com
    D. IMP Identification
    D.IMP: 1
    D.1.2 and D.1.3IMP RoleTest
    D.2 Status of the IMP to be used in the clinical trial
    D.2.1IMP to be used in the trial has a marketing authorisation No
    D.2.5The IMP has been designated in this indication as an orphan drug in the Community Yes
    D.2.5.1Orphan drug designation numberEU/3/21/2435
    D.3 Description of the IMP
    D.3.1Product namePTC923
    D.3.2Product code [ PTC923]
    D.3.4Pharmaceutical form Powder for oral solution
    D.3.4.1Specific paediatric formulation No
    D.3.7Routes of administration for this IMPOral use
    D.3.8 to D.3.10 IMP Identification Details (Active Substances)
    D.3.9.1CAS number 17094-01-8
    D.3.9.2Current sponsor codePTC923
    D.3.10 Strength
    D.3.10.1Concentration unit mg milligram(s)
    D.3.10.2Concentration typeequal
    D.3.10.3Concentration number250
    D.3.11 The IMP contains an:
    D.3.11.1Active substance of chemical origin Yes
    D.3.11.2Active substance of biological/ biotechnological origin (other than Advanced Therapy IMP (ATIMP) No
    The IMP is a:
    D.3.11.3Advanced Therapy IMP (ATIMP) No
    D.3.11.3.1Somatic cell therapy medicinal product Information not present in EudraCT
    D.3.11.3.2Gene therapy medical product Information not present in EudraCT
    D.3.11.3.3Tissue Engineered Product Information not present in EudraCT
    D.3.11.3.4Combination ATIMP (i.e. one involving a medical device) Information not present in EudraCT
    D.3.11.3.5Committee on Advanced therapies (CAT) has issued a classification for this product Information not present in EudraCT
    D.3.11.4Combination product that includes a device, but does not involve an Advanced Therapy No
    D.3.11.5Radiopharmaceutical medicinal product No
    D.3.11.6Immunological medicinal product (such as vaccine, allergen, immune serum) No
    D.3.11.7Plasma derived medicinal product No
    D.3.11.8Extractive medicinal product No
    D.3.11.9Recombinant medicinal product No
    D.3.11.10Medicinal product containing genetically modified organisms No
    D.3.11.11Herbal medicinal product No
    D.3.11.12Homeopathic medicinal product No
    D.3.11.13Another type of medicinal product No
    D.IMP: 2
    D.1.2 and D.1.3IMP RoleTest
    D.2 Status of the IMP to be used in the clinical trial
    D.2.1IMP to be used in the trial has a marketing authorisation No
    D.2.5The IMP has been designated in this indication as an orphan drug in the Community Yes
    D.2.5.1Orphan drug designation numberEU/3/21/2435
    D.3 Description of the IMP
    D.3.1Product namePTC923
    D.3.2Product code [ PTC923]
    D.3.4Pharmaceutical form Powder for oral solution
    D.3.4.1Specific paediatric formulation No
    D.3.7Routes of administration for this IMPOral use
    D.3.8 to D.3.10 IMP Identification Details (Active Substances)
    D.3.9.1CAS number 17094-01-8
    D.3.9.2Current sponsor codePTC923
    D.3.10 Strength
    D.3.10.1Concentration unit mg milligram(s)
    D.3.10.2Concentration typeequal
    D.3.10.3Concentration number1000
    D.3.11 The IMP contains an:
    D.3.11.1Active substance of chemical origin Yes
    D.3.11.2Active substance of biological/ biotechnological origin (other than Advanced Therapy IMP (ATIMP) No
    The IMP is a:
    D.3.11.3Advanced Therapy IMP (ATIMP) No
    D.3.11.3.1Somatic cell therapy medicinal product Information not present in EudraCT
    D.3.11.3.2Gene therapy medical product Information not present in EudraCT
    D.3.11.3.3Tissue Engineered Product Information not present in EudraCT
    D.3.11.3.4Combination ATIMP (i.e. one involving a medical device) Information not present in EudraCT
    D.3.11.3.5Committee on Advanced therapies (CAT) has issued a classification for this product Information not present in EudraCT
    D.3.11.4Combination product that includes a device, but does not involve an Advanced Therapy No
    D.3.11.5Radiopharmaceutical medicinal product No
    D.3.11.6Immunological medicinal product (such as vaccine, allergen, immune serum) No
    D.3.11.7Plasma derived medicinal product No
    D.3.11.8Extractive medicinal product No
    D.3.11.9Recombinant medicinal product No
    D.3.11.10Medicinal product containing genetically modified organisms No
    D.3.11.11Herbal medicinal product No
    D.3.11.12Homeopathic medicinal product No
    D.3.11.13Another type of medicinal product No
    D.8 Information on Placebo
    D.8 Placebo: 1
    D.8.1Is a Placebo used in this Trial?Yes
    D.8.3Pharmaceutical form of the placeboPowder for oral solution
    D.8.4Route of administration of the placeboOral use
    E. General Information on the Trial
    E.1 Medical condition or disease under investigation
    E.1.1Medical condition(s) being investigated
    Metabolic Disorders - Phenylketonuria
    Fenilchetonuria
    E.1.1.1Medical condition in easily understood language
    Phenylketonuria (PKU) is an autosomal-recessive inborn error of metabolism characterized by deficiency of the enzyme phenylalanine hydroxylase (PAH), which metabolizes phenylalanine (Phe)
    La fenilchetonuria (PKU) è una malattia congenita autosomica recessiva del metabolismo caratterizzato dal deficit dell'enzima fenilalanina idrossilasi (PAH), che metabolizza la fenilalanina (Phe).
    E.1.1.2Therapeutic area Body processes [G] - Metabolic Phenomena [G03]
    MedDRA Classification
    E.1.3Condition being studied is a rare disease Yes
    E.2 Objective of the trial
    E.2.1Main objective of the trial
    To evaluate the efficacy of PTC923 in reducing blood Phe levels in subjects with PKU as measured by mean change in blood Phe levels from baseline to Weeks 5 and 6 (ie, the average of each respective treatment dose 2-week period of double-blind treatment)
    Valutare l'efficacia di PTC923 nella riduzione dei livelli ematici di fenilalanina in soggetti affetti da fenilchetonuria misurata mediante la variazione media dei livelli ematici di Phe dal basale alle Settimane 5 e 6 (ovvero la media di ciascun periodo di somministrazione terapeutica di 2 settimane del trattamento in doppio cieco)
    E.2.2Secondary objectives of the trial
    •To evaluate the proportion of subjects with baseline Phe levels =600 µmol/L who achieve Phe levels <600 µmol/L at the end of the double-blind treatment period
    •To evaluate the effect of PTC923 dose response on reducing blood Phe levels in subjects with PKU
    •To evaluate the PK of PTC923 in subjects with PKU
    •To assess the safety of PTC923 in subjects with PKU
    • Valutare la percentuale di soggetti con livelli di Phe al basale =600 µmol/l che raggiungono livelli di Phe <600 µmol/l al termine del periodo di trattamento in doppio cieco
    • Valutare l'effetto della risposta alla somministrazione di PTC923 sulla riduzione dei livelli ematici di Phe in soggetti affetti da PKU
    • Valutare la farmacocinetica (Pharmacokinetics, PK) di PTC923 in soggetti affetti da PKU
    • Valutare la sicurezza di PTC923 in soggetti affetti da PKU
    E.2.3Trial contains a sub-study Yes
    E.2.3.1Full title, date and version of each sub-study and their related objectives

    Other types of substudies
    Specify title, date and version of each substudy with relative objectives: Pharmacokinetic. Blood samples (2 samples/occasion) will be collected from subjects in Part 2 on Days 1, 14, 28, and 42 visits to characterize the PK of
    sepiapterin and BH4 at predose (approximately 24 hours post the dose on prior day, except for Day 1 and prior to the dose of the day) and 4 hours postdose.

    Altre tipologie di sottostudi
    specificare il titolo, la data e la versione di ogni sottostudio con i relativi obiettivi: Farmacocinetica. I soggetti verranno sottoposti al prelievo di campioni di sangue (2 campioni/volta) durante le visite dei Giorni 1, 14, 28, e 42 della Parte 2 al fine di caratterizzare la PK di sepiapterina e BH4. I prelievi verranno eseguiti prima della somministrazione della dose (circa 24 ore dopo la dose del giorno precedente, ad eccezione del Giorno 1, e prima della dose prevista per tale giorno) e 4 ore dopo la somministrazione della dose.
    E.3Principal inclusion criteria
    1.Informed consent and assent (if necessary, at the investigator’s discretion [ie, for children and/or subjects who are mentally impaired secondary to disease]) with parental/legal guardian consent
    2.Male or female subjects of any age
    3.Uncontrolled blood Phe level =360 µmol/L on current therapy anytime during Screening and uncontrolled blood Phe level =360 µmol/L on current therapy when taking the average of the 3 most recent Phe levels from the subject's medical history (inclusive of the Screening value)
    4.Clinical diagnosis of PKU with hyperphenylalaninemia (HPA) documented by past medical history of at least 2 blood Phe measurements =600 µmol/L
    5.Women of childbearing potential, as defined in (CTFG 2020), must have a negative pregnancy test at Screening and agree to abstinence or the use of at least one highly effective form of contraception (with a failure rate of <1% per year when used consistently and correctly):
    •Combined (estrogen and progestogen containing) hormonal contraception associated with inhibition of ovulation:
    - Oral
    - Intravaginal
    - Transdermal
    •Progestogen-only hormonal contraception associated with inhibition of ovulation:
    - Oral
    - Injectable
    - Implantable
    •Intrauterine device
    •Intrauterine hormone-releasing system
    •Vasectomized partner with confirmed azoospermia
    Highly effective contraception or abstinence must be continued for the duration of the study, and for up to 90 days after the last dose of the study drug.
    All females will be considered of childbearing potential unless they are postmenopausal (at least 12 months consecutive amenorrhea in the appropriate age group without other known or suspected cause) or have been sterilized surgically (eg, hysterectomy, bilateral tubal ligation, bilateral oophorectomy).
    6.Males who are sexually active with women of childbearing potential who have not had a vasectomy must agree to use a barrier method of birth control during the study and for up to 90 days after the last dose of study drug. Males must also refrain from sperm donations during this time period.
    Males who are abstinent will not be required to use a contraceptive method unless they become sexually active. Males who have undergone a vasectomy are not required to use a contraceptive method if at least 16 weeks post procedure.
    7.Willing and able to comply with the protocol and study procedures
    8.Willing to continue current diet unchanged while participating in the study
    1. Consenso e assenso informato (se necessario, a discrezione dello sperimentatore [vale a dire, per bambini e/o soggetti con ridotte facoltà mentali a seguito della malattia]) associato al consenso dei genitori/tutori legali
    2. Soggetti di sesso maschile o femminile di qualsiasi età
    3. Livelli ematici di Phe non controllati =360 µmol/l durante la terapia corrente in qualsiasi momento durante lo screening e livelli ematici non controllati di Phe =360 µmol/l durante la terapia corrente se si considera la media dei 3 livelli di Phe più recenti indicati nell'anamnesi medica del soggetto (compreso il valore allo screening)
    4. Diagnosi clinica di PKU con iperfenilalaninemia (Hyperphenylalaninemia, HPA) documentata mediante anamnesi medica precedente di almeno 2 misurazioni della Phe ematica =600 µmol/l
    5. Le donne potenzialmente fertili, secondo la definizione del CTFG 2020, devono presentare un test di gravidanza negativo allo screening e accettare di praticare l'astinenza o utilizzare almeno un metodo contraccettivo altamente efficace (con un tasso di fallimento <1% all'anno, se utilizzato in modo costante e corretto):
    • Contraccezione ormonale combinata (a base di estrogeni e progesterone) associata a inibizione dell'ovulazione:
    ¿ Orale
    ¿ Intravaginale
    ¿ Transdermica
    • Contraccezione ormonale a base di solo progesterone associata a inibizione dell'ovulazione:
    ¿ Orale
    ¿ Iniettabile
    ¿ Impiantabile
    • Dispositivo intrauterino
    • Sistema intrauterino a rilascio ormonale
    • Partner vasectomizzato con azoospermia confermata
    È necessario seguire il regime di contraccezione altamente efficace o l’astinenza per tutta la durata dello studio e fino a 90 giorni dopo l’assunzione dell’ultima dose del farmaco in studio.
    Tutti i soggetti di sesso femminile saranno considerati potenzialmente fertili a meno che non siano in post-menopausa (almeno 12 mesi consecutivi di amenorrea nella relativa fascia di età senza nessun’altra causa nota o sospetta) o sterilizzati chirurgicamente (ad es. tramite isterectomia, legatura tubarica bilaterale, ooforectomia bilaterale).
    6. I soggetti di sesso maschile sessualmente attivi con donne potenzialmente fertili non sottoposti a vasectomia devono accettare di utilizzare un metodo contraccettivo di barriera durante lo studio e fino a 90 giorni dopo la somministrazione dell'ultima dose del farmaco in studio. I pazienti di sesso maschile devono inoltre astenersi dalle donazioni di sperma durante questo periodo di tempo.
    I soggetti maschili che praticano l’astinenza non saranno obbligati ad utilizzare un metodo contraccettivo, a meno che non diventino sessualmente attivi. I soggetti maschili che si sono sottoposti a vasectomia non sono obbligati ad utilizzare un metodo contraccettivo se sono passate almeno 16 settimane dall’intervento.
    7. Volontà e capacità di rispettare il protocollo e le procedure dello studio
    8. Volontà di portare avanti la dieta attuale senza modificarla durante la partecipazione allo studio
    E.4Principal exclusion criteria
    1.The individual, in the opinion of the investigator, is unwilling or unable to adhere to the requirements of the study
    2.Gastrointestinal disease (such as irritable bowel syndrome, inflammatory bowel disease, chronic gastritis, and peptic ulcer disease, etc.) that could affect the absorption of study drug
    3.History of gastric surgery, including Roux-en-Y gastric bypass surgery or an antrectomy with vagotomy, or gastrectomy
    4.Inability to tolerate oral medication
    5.History of allergies or adverse reactions to synthetic BH4 or sepiapterin
    6.Current participation in any other investigational drug study or use of any investigational agent within 30 days prior to Screening
    7.Any clinically significant laboratory abnormality as determined by the investigator. In general, each laboratory value from Screening and baseline chemistry and hematology panels should fall within the limits of the normal laboratory reference range, unless deemed not clinically significant by the investigator
    8.A female who is pregnant or breastfeeding, or considering pregnancy
    9.Serious neuropsychiatric illness (eg, major depression) not currently under medical control, that in the opinion of the investigator or sponsor, would interfere with the subject’s ability to participate in the study or increase the risk of participation for that subject
    10.Past medical history and/or evidence of renal impairment and/or condition including moderate/severe renal insufficiency (glomerular filtration rate [GFR] <60 mL/min) and/or under care of a nephrologist
    11.Any abnormal physical examination and/or laboratory findings indicative of signs or symptoms of renal disease, including calculated GFR <60 mL/min/1.73m2.
    In subjects =18 years of age, the Modification of Diet in Renal Disease Equation should be used to determine GFR.
    In subjects <18 years, the Bedside Schwartz Equation should be used to determine GFR.
    12.Requirement for concomitant treatment with any drug known to inhibit folate synthesis (eg, methotrexate)
    13.Confirmed diagnosis of a primary BH4 deficiency as evidenced by biallelic pathogenic mutations in 6-pyruvoyltetrahydropterin synthase, recessive GTP cyclohydrolase I, sepiapterin reductase, quinoid dihydropteridine reductase, or pterin 4-alpha-carbinolamine dehydratase genes
    14.Major surgery within the prior 90 days of screening
    15.Concomitant treatment with BH4 supplementation (eg, sapropterin dihydrochloride, KUVAN) or pegvaliase-pqpz (PALYNZIQ)
    16.Unwillingness to washout from BH4 supplementation (eg, sapropterin dihydrochloride, KUVAN) or pegvaliase-pqpz (PALYNZIQ)
    1. Soggetto che, a giudizio dello sperimentatore, non è disposto o non è in grado di attenersi ai requisiti dello studio
    2. Malattia gastrointestinale (ad esempio sindrome dell'intestino irritabile, malattia infiammatoria intestinale, gastrite cronica, ulcera peptica, ecc.) che potrebbe influire sull'assorbimento del farmaco in studio
    3. Anamnesi di chirurgia gastrica, tra cui intervento di bypass gastrico Roux-en-Y o antrectomia con vagotomia o gastrectomia
    4. Incapacità di tollerare il farmaco per via orale
    5. Anamnesi di allergie o reazioni avverse a BH4 o alla sepiapterina sintetica
    6. Partecipazione attuale ad altri studi su farmaci sperimentali o uso di qualsiasi agente sperimentale nei 30 giorni precedenti allo screening
    7. Qualsiasi anomalia di laboratorio clinicamente significativa, come determinato dallo sperimentatore. In generale, i valori di laboratorio ricavati dai pannelli ematologici e chimici allo screening e al basale devono rientrare nei limiti dell'intervallo di riferimento normale del laboratorio, fatti salvi i casi non ritenuti clinicamente significativi dallo sperimentatore
    8. Donne in gravidanza o allattamento o che stanno pianificando una gravidanza
    9. Grave malattia neuropsichiatrica (ad es. depressione maggiore) non attualmente sotto controllo medico, che, secondo il parere dello sperimentatore o dello sponsor, interferirebbe con la capacità del soggetto di partecipare allo studio o aumentare il rischio associato alla partecipazione per tale soggetto
    10. Anamnesi medica pregressa e/o evidenza di patologia e/o compromissione renale che comporti un’insufficienza renale moderata/grave (tasso di filtrazione glomerulare [GFR] <60 ml/min) e/o in cura da un nefrologo;
    11. Anomalie riscontrate all’esame obiettivo e/o nei risultati degli esami di laboratorio che indichino segni o sintomi di malattia renale, compresa un GFR calcolato <60 ml/min/1,73 m2.
    Nei soggetti di età =18 anni, il GFR deve essere determinato mediante la formula della modifica della dieta nella malattia renale. Nei soggetti di età <18 anni, per calcolare il GFR si utilizzerà l’equazione di Bedside Schwartz.
    12. Necessità di trattamento concomitante con qualsiasi farmaco noto per inibire la sintesi del folato (ad es. metotrexato)
    13. Diagnosi confermata di deficit primario di BH4, come evidenziato da mutazioni patogene bialleliche nei geni 6-piruvoiltetraidropterina sintasi, GTP-cicloidrolasi I recessivo, sepiapterina reduttasi, chinoide diidropteridina reduttasi o pterina 4-alfa-carbinolamina deidratasi
    14. Intervento chirurgico maggiore nei 90 giorni precedenti lo screening
    15. Trattamento concomitante con integrazione di BH4 (ad es. sapropterina dicloridato, KUVAN) o pegvaliase-pqpz (PALYNZIQ)
    16. Indisponibilità a sottoporsi al washout dell'integrazione di BH4 (ad es. sapropterina dicloridrato, KUVAN) o pegvaliase-pqpz (PALYNZIQ)
    E.5 End points
    E.5.1Primary end point(s)
    The primary efficacy measure will be reduction in blood Phe levels in subjects with PKU as measured by mean change in Phe levels from baseline to Part 2 Weeks 5 and 6 (ie, the average of the 2-week period at the target dose of double-blind treatment). Baseline blood Phe level will be the mean of Day -1 and Day 1 (predose) blood Phe levels
    La misura di efficacia primaria sarà la riduzione dei livelli ematici di Phe in soggetti con PKU stimata tramite la variazione media dei livelli ematici di Phe dal basale alle Settimane 5 e 6 della Parte 2 (ovvero, la media del periodo di 2 settimane alla dose bersaglio del trattamento in doppio cieco). Il livello ematico di Phe al basale sarà la media dei livelli ematici di Phe al Giorno -1 e al Giorno 1 (prima della somministrazione della dose).
    E.5.1.1Timepoint(s) of evaluation of this end point
    Weeks 5 and 6
    Settimane 5 e 6
    E.5.2Secondary end point(s)
    The secondary efficacy endpoints are the proportion of subjects with baseline Phe levels =600 µmol/L who achieve Phe levels <600 µmol/L at the end of the double-blind treatment period and the change from baseline in mean blood Phe levels at each PTC923 dose level (ie, each 2-week period in Part 2).
    Gli endpoint secondari di efficacia sono la percentuale di soggetti con livelli di Phe al basale =600 µmol/l che raggiungono livelli di Phe <600 µmol/l al termine del periodo di trattamento in doppio cieco e la variazione rispetto al basale dei livelli ematici medi di Phe ad ogni livello di dosaggio di PTC923 (ovvero, ciascun periodo di 2 settimane nella Parte 2).
    E.5.2.1Timepoint(s) of evaluation of this end point
    each 2-week period in Part 2
    ciascun periodo di 2 settimane nella Parte 2
    E.6 and E.7 Scope of the trial
    E.6Scope of the trial
    E.6.1Diagnosis No
    E.6.2Prophylaxis No
    E.6.3Therapy No
    E.6.4Safety Yes
    E.6.5Efficacy Yes
    E.6.6Pharmacokinetic Yes
    E.6.7Pharmacodynamic No
    E.6.8Bioequivalence No
    E.6.9Dose response No
    E.6.10Pharmacogenetic No
    E.6.11Pharmacogenomic No
    E.6.12Pharmacoeconomic No
    E.6.13Others No
    E.7Trial type and phase
    E.7.1Human pharmacology (Phase I) No
    E.7.1.1First administration to humans No
    E.7.1.2Bioequivalence study No
    E.7.1.3Other No
    E.7.1.3.1Other trial type description
    E.7.2Therapeutic exploratory (Phase II) No
    E.7.3Therapeutic confirmatory (Phase III) Yes
    E.7.4Therapeutic use (Phase IV) No
    E.8 Design of the trial
    E.8.1Controlled Yes
    E.8.1.1Randomised Yes
    E.8.1.2Open No
    E.8.1.3Single blind No
    E.8.1.4Double blind Yes
    E.8.1.5Parallel group No
    E.8.1.6Cross over No
    E.8.1.7Other No
    E.8.2 Comparator of controlled trial
    E.8.2.1Other medicinal product(s) No
    E.8.2.2Placebo Yes
    E.8.2.3Other No
    E.8.2.4Number of treatment arms in the trial2
    E.8.3 The trial involves single site in the Member State concerned No
    E.8.4 The trial involves multiple sites in the Member State concerned Yes
    E.8.4.1Number of sites anticipated in Member State concerned2
    E.8.5The trial involves multiple Member States Yes
    E.8.5.1Number of sites anticipated in the EEA13
    E.8.6 Trial involving sites outside the EEA
    E.8.6.1Trial being conducted both within and outside the EEA Yes
    E.8.6.2Trial being conducted completely outside of the EEA Information not present in EudraCT
    E.8.6.3If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned
    Australia
    Brazil
    Canada
    Mexico
    United States
    France
    Netherlands
    Spain
    Germany
    Italy
    Denmark
    Georgia
    Portugal
    Turkey
    United Kingdom
    E.8.7Trial has a data monitoring committee Yes
    E.8.8 Definition of the end of the trial and justification where it is not the last visit of the last subject undergoing the trial
    LVLS
    LVLS
    E.8.9 Initial estimate of the duration of the trial
    E.8.9.1In the Member State concerned years1
    E.8.9.1In the Member State concerned months9
    E.8.9.1In the Member State concerned days0
    E.8.9.2In all countries concerned by the trial years1
    E.8.9.2In all countries concerned by the trial months9
    E.8.9.2In all countries concerned by the trial days0
    F. Population of Trial Subjects
    F.1 Age Range
    F.1.1Trial has subjects under 18 Yes
    F.1.1.1In Utero No
    F.1.1.2Preterm newborn infants (up to gestational age < 37 weeks) No
    F.1.1.3Newborns (0-27 days) No
    F.1.1.4Infants and toddlers (28 days-23 months) Yes
    F.1.1.4.1Number of subjects for this age range: 20
    F.1.1.5Children (2-11years) Yes
    F.1.1.5.1Number of subjects for this age range: 20
    F.1.1.6Adolescents (12-17 years) Yes
    F.1.1.6.1Number of subjects for this age range: 20
    F.1.2Adults (18-64 years) Yes
    F.1.2.1Number of subjects for this age range: 100
    F.1.3Elderly (>=65 years) Yes
    F.1.3.1Number of subjects for this age range: 20
    F.2 Gender
    F.2.1Female Yes
    F.2.2Male Yes
    F.3 Group of trial subjects
    F.3.1Healthy volunteers No
    F.3.2Patients Yes
    F.3.3Specific vulnerable populations Yes
    F.3.3.1Women of childbearing potential not using contraception No
    F.3.3.2Women of child-bearing potential using contraception Yes
    F.3.3.3Pregnant women No
    F.3.3.4Nursing women No
    F.3.3.5Emergency situation No
    F.3.3.6Subjects incapable of giving consent personally Yes
    F.3.3.6.1Details of subjects incapable of giving consent
    Informed consent and assent (if necessary, at the investigator’s discretion [ie, for children and/or subjects who are mentally impaired secondary to disease]) with parental/legal guardian consent
    Consenso informato e assenso (se necessario, a discrezione dello sperimentatore [cioè, per bambini e/o soggetti con disabilità mentale secondaria a malattia]) con il consenso del genitore/tutore legale
    F.3.3.7Others Yes
    F.3.3.7.1Details of other specific vulnerable populations
    0-18 years
    0-18 anni
    F.4 Planned number of subjects to be included
    F.4.1In the member state14
    F.4.2 For a multinational trial
    F.4.2.1In the EEA 98
    F.4.2.2In the whole clinical trial 178
    F.5 Plans for treatment or care after the subject has ended the participation in the trial (if it is different from the expected normal treatment of that condition)
    The PTC923-MD-004-PKU study, which is going to be an extension study, is planned to be submitted to regulatory authorities and ethics committees as a standalone clinical trial authorization application as soon as possible.
    Lo studio PTC923-MD-004-PKU, che sarà uno studio di estensione, dovrebbe essere presentato alle autorità regolatorie e ai comitati etici come domanda di autorizzazione alla sperimentazione clinica autonoma il prima possibile.
    G. Investigator Networks to be involved in the Trial
    N. Review by the Competent Authority or Ethics Committee in the country concerned
    N.Competent Authority Decision Authorised
    N.Date of Competent Authority Decision2022-09-05
    N.Ethics Committee Opinion of the trial applicationFavourable
    N.Ethics Committee Opinion: Reason(s) for unfavourable opinion
    N.Date of Ethics Committee Opinion2022-09-20
    P. End of Trial
    P.End of Trial StatusOngoing
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