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    Summary
    EudraCT Number:2016-000600-29
    Sponsor's Protocol Code Number:UX023-CL301
    National Competent Authority:Italy - Italian Medicines Agency
    Clinical Trial Type:EEA CTA
    Trial Status:Prematurely Ended
    Date on which this record was first entered in the EudraCT database:2018-04-20
    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 number2016-000600-29
    A.3Full title of the trial
    A Randomized, Open-Label, Phase 3 Study to Assess the Efficacy and Safety of KRN23 Versus Oral Phosphate and Active Vitamin D Treatment in Pediatric Patients with X-linked Hypophosphatemia (XLH)
    Studio randomizzato in aperto di Fase 3 finalizzato alla valutazione dell’efficacia e della sicurezza di KRN23 vs. trattamento orale a base di fosfato e vitamina D attiva in pazienti pediatrici affetti da
    ipofosfatemia X-linked (XLH)
    A.3.1Title of the trial for lay people, in easily understood, i.e. non-technical, language
    A Randomized, Open-Label, Phase 3 Study to Assess the Efficacy and Safety of KRN23 Versus Oral Phosphate and Active Vitamin D Treatment in Pediatric Patients with X-linked Hypophosphatemia (XLH)
    Studio randomizzato in aperto di Fase 3 finalizzato alla valutazione dell’efficacia e della sicurezza di KRN23 vs. trattamento orale a base di fosfato e vitamina D attiva in pazienti pediatrici affetti da
    ipofosfatemia X-linked (XLH)
    A.3.2Name or abbreviated title of the trial where available
    NA
    NA
    A.4.1Sponsor's protocol code numberUX023-CL301
    A.5.4Other Identifiers
    Name:Unique product identifier(UPI)Number:EMA/902676
    A.7Trial is part of a Paediatric Investigation Plan Yes
    A.8EMA Decision number of Paediatric Investigation PlanP/958/2016
    B. Sponsor Information
    B.Sponsor: 1
    B.1.1Name of SponsorULTRAGENYX PHARMACEUTICAL 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 supportUltragenyx Pharmaceutical Inc.
    B.4.2CountryUnited States
    B.5 Contact point designated by the sponsor for further information on the trial
    B.5.1Name of organisationIcon Clinical research Ltd
    B.5.2Functional name of contact pointRegulatory Affairs
    B.5.3 Address:
    B.5.3.1Street Address100 Milton Park
    B.5.3.2Town/ cityAbingdon
    B.5.3.3Post codeOX14 4RY
    B.5.3.4CountryUnited Kingdom
    B.5.4Telephone number44 1235 451277
    B.5.5Fax number44 1235 451277
    B.5.6E-mailmarkas.marriott@iconplc.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/ 14/ 1351
    D.3 Description of the IMP
    D.3.1Product nameAnticorpo monoclonale IgG1 ricombinante umano per il fattore di crescita dei fibroblasti 23
    D.3.4Pharmaceutical form Solution for injection
    D.3.4.1Specific paediatric formulation No
    D.3.7Routes of administration for this IMP
    D.3.8 to D.3.10 IMP Identification Details (Active Substances)
    D.3.8INN - Proposed INNBurosumab
    D.3.9.1CAS number 1610833-03-8
    D.3.9.2Current sponsor codeKRN23
    D.3.9.3Other descriptive nameAnticorpo monoclonale IgG1 ricombinante umano diretto contro il fattore di crescita fibroblastico 23 [FGF23]
    D.3.9.4EV Substance CodeSUB130804
    D.3.10 Strength
    D.3.10.1Concentration unit mg milligram(s)
    D.3.10.2Concentration typeequal
    D.3.10.3Concentration number10
    D.3.8 to D.3.10 IMP Identification Details (Active Substances)
    D.3.8INN - Proposed INNBurosumab
    D.3.9.1CAS number 1610833-03-8
    D.3.9.2Current sponsor codeKRN23
    D.3.9.3Other descriptive nameAnticorpo monoclonale IgG1 ricombinante umano diretto contro il fattore di crescita fibroblastico 23 [FGF23]
    D.3.9.4EV Substance CodeSUB130804
    D.3.10 Strength
    D.3.10.1Concentration unit mg milligram(s)
    D.3.10.2Concentration typeequal
    D.3.10.3Concentration number30
    D.3.11 The IMP contains an:
    D.3.11.1Active substance of chemical origin No
    D.3.11.2Active substance of biological/ biotechnological origin (other than Advanced Therapy IMP (ATIMP) Yes
    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 Yes
    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
    E. General Information on the Trial
    E.1 Medical condition or disease under investigation
    E.1.1Medical condition(s) being investigated
    X-linked hypophosphatemia (XLH) is a disorder of renal phosphate wasting, defective bone mineralization, and impaired growth plate or endochondral ossification caused by inactivating
    mutations in the PHEX gene (phosphate-regulating gene with homologies to endopeptidases on the
    X chromosome), and is the most common form of heritable rickets.
    L’ipofosfatemia X-linked (XLH) è una patologia che comporta una deplezione renale di fosfato, un deficit di mineralizzazione ossea e un’insufficiente ossificazione della piastra di crescita o endocondrale causata da mutazioni inattivanti localizzate in corrispondenza del gene PHEX (gene responsabile della regolazione dei fosfati che presenta omologie alle endopeptidasi sul cromosoma X) e rappresenta la forma più comune di rachitismo ereditario.
    E.1.1.1Medical condition in easily understood language
    Inheritable form of rickets
    Forma ereditaria di rachitismo
    E.1.1.2Therapeutic area Body processes [G] - Bones and nerves physological processes [G11]
    MedDRA Classification
    E.1.2 Medical condition or disease under investigation
    E.1.2Version 20.0
    E.1.2Level LLT
    E.1.2Classification code 10016206
    E.1.2Term Familial hypophosphataemic rickets
    E.1.2System Organ Class 100000004850
    E.1.3Condition being studied is a rare disease Yes
    E.2 Objective of the trial
    E.2.1Main objective of the trial
    Evaluate the effect of KRN23 therapy in improving rickets in children with XLH compared with active control (oral phosphate/active vitamin D)
    Valutare l’effetto prodotto dalla terapia con KRN23 sul miglioramento del rachitismo in pazienti pediatrici affetti da XLH rispetto al controllo attivo (fosfato/vitamina D attiva per via orale)
    E.2.2Secondary objectives of the trial
    Efficacy:
    Evaluate the effects of KRN23 as compared with active control on:
    • Growth velocity and lower extremity deformity
    • Pharmacodynamic markers that reflect the status of phosphorus homeostasis, including serum
    1,25(OH) 2 D, serum and urinary phosphorus, ratio of renal tubular maximum reabsorption rate of
    phosphate to glomerular filtration rate (TmP/GFR), and tubular reabsorption of phosphate (TRP)
    • Biochemical markers of bone turnover that reflect rickets severity (alkaline phosphatase [ALP])
    • Walking ability and patient-/parent-reported pain, fatigue, and physical function/mobility

    Pharmacokinetic:
    Assess the PK of KRN23 throughout the dosing cycle

    Safety:
    Evaluate the safety and tolerability profile of KRN23 in the treatment of children with XLH (aged 1 to
    ≤12 years), including adverse events (AEs) and immunogenicity profile
    Efficacia:
    valutare gli effetti prodotti da KRN23 rispetto al controllo attivo in termini di:
    •velocità di sviluppo e deformazione delle estremità inferiori
    •marcatori farmacodinamici indicativi dello stato dell’omeostasi del fosforo, fra cui 1,25(OH)2D nel siero, fosforo sierico e urinario, il rapporto fra la velocità di riassorbimento massimo di fosfato nel tubulo renale e la velocità di filtrazione glomerulare (TmP/GFR) e il riassorbimento di fosfato nel tubulo (TRP)
    •marcatori biochimici del turnover osseo indicativi della gravità del rachitismo (fosfatasi alcalina [ALP])
    •capacità di deambulazione e dolore riportato dal paziente/genitore, astenia e funzione fisica/mobilità

    Farmacocinetica:
    valutare la PK di KRN23 per l’intero ciclo di somministrazione

    Sicurezza:
    valutare il profilo di sicurezza e tollerabilità di KRN23 nel trattamento di pazienti pediatrici affetti da XLH (di età compresa fra 1 e ≤12 anni), inclusi gli eventi (AE) e il profilo di immunogenicità
    E.2.3Trial contains a sub-study No
    E.3Principal inclusion criteria
    1) Male or female, aged 1 to ≤12 years with radiographic evidence of rickets with a minimum
    rickets severity score (RSS) total score of 2 as determined by central read
    2) PHEX mutation or variant of uncertain significance in either the patient or in a directly
    related family member with appropriate X-linked inheritance
    3) Biochemical findings associated with XLH: Serum phosphorus <3.0 mg/dL (0.97 mmol/L)
    4) Serum creatinine within age-adjusted normal range*
    5) Serum 25(OH)D above the lower limit of normal (≥16 ng/mL) at the Screening Visit**
    6) Have received both oral phosphate and active vitamin D therapy for ≥12 consecutive
    months (for children ≥3 years of age) or ≥ 6 consecutive months (for children <3 years of
    age) prior to the Screening Visit
    7) Willing to provide access to prior medical records for the collection of historical growth and
    radiographic data and disease history.
    8) Provide written or verbal assent (as appropriate for the subject and region) and written informed consent by a legally authorized representative after the nature of the study has been explained, and prior to any research-related procedures.
    9) Must, in the opinion of the investigator, be willing and able to complete all aspects of the study, adhere to the study visit schedule and comply with the assessments.
    10) Females who have reached menarche must have a negative pregnancy test at Screening and
    undergo additional pregnancy testing during the study. If sexually active, male and female
    subjects must be willing to use highly effective method(s) of contraception for the duration
    of the study.
    1) soggetti di sesso maschile o femminile, da 1 a ≤12 anni di età con evidenza radiografica di rachitismo e un punteggio di gravità di rachitismo (RSS) minimo totale pari a 2 secondo lettura centrale
    2) presenza di mutazione del gene PHEX o variante di incerta significatività nel paziente o in un membro familiare di parentela diretta affetto da pertinente ereditarietà X-linked
    3) reperti biochimici associati a XLH: fosforo nel siero <3,0 mg/dl (0,97 mmol/l)
    4) creatinina nel siero entro il range normale adeguato per età*
    5) 25(OH)D nel siero al di sopra del limite inferiore della norma (≥16 ng/ml) alla Visita di screening**
    6) somministrazione di pregressa terapia orale a base di fosfato e vitamina D attiva per ≥12 mesi consecutivi (per bambini di età ≥3 anni) o ≥6 mesi consecutivi (per bambini di età <3 anni) prima della Visita di screening
    7) disponibilità ad acconsentire all’accesso a precedenti informazioni cliniche ai fini della raccolta dello storico evolutivo e dei dati radiografici nonché dell’anamnesi patologica
    8) disponibilità a fornire l’assenso scritto o verbale (in base al soggetto e alla regione) e il consenso informato scritto a cura di un rappresentante legale una volta spiegata la natura dello studio e prima che sia svolta qualsiasi procedura inerente allo studio
    9) capacità, secondo il parere dello sperimentatore, di portare a termine tutti gli aspetti dello studio, rispettare il programma di visite dello studio e delle valutazioni
    10) i soggetti di sesso femminile che abbiano raggiunto il menarca devono risultare negativi al test di gravidanza allo Screening e sottoporsi a ulteriori test di gravidanza durante lo studio. Se sessualmente attivi, i soggetti sia di sesso maschile sia di sesso femminile devono essere disposti ad adottare metodi altamente efficaci di contraccezione per l’intera durata dello studio
    E.4Principal exclusion criteria
    Individuals who meet any of the following exclusion criteria will not be eligible to participate in the
    study:
    1) Tanner stage 4 or higher through physical examination
    2) Height percentile >50% based on country-specific norms
    3) Use of aluminum hydroxide antacids (e.g. Maalox ® and Mylanta®), systemic corticosteroids,
    acetazolamide, and thiazides within 7 days prior to the Screening Visit
    4) Current or prior use of leuprorelin (e.g., Lupron
    ®, Viadur ®, Eligard®), triptorelin (TRELSTAR®), goserelin (Zoladex®), or other drugs known to delay puberty
    5) Use of growth hormone therapy within 12 months before the Screening Visit
    6) Presence of nephrocalcinosis on renal ultrasound grade 4 based on the following scale:
    0 = Normal
    1 = Faint hyperechogenic rim around the medullary pyramids
    2 = More intense echogenic rim with echoes faintly filling the entire pyramid
    3 = Uniformly intense echoes throughout the pyramid
    4 = Stone formation: solitary focus of echoes at the tip of the pyramid
    7) Planned or recommended orthopedic surgery (implantation or removal), including staples, 8-plates or osteotomy, within first 40 weeks of the study
    8) Hypocalcemia or hypercalcemia, defined as serum calcium levels outside the age-adjusted
    normal limits*
    9) Evidence of hyperparathyroidism (parathyroid hormone [PTH] levels 2.5X upper limit of normal [ULN])
    10) Use of medication to suppress PTH (e.g., cinacalcet, calcimimetics) within 2 months prior to
    the Screening Visit
    11) Presence or history of any condition that, in the view of the Investigator, places the subject at high risk of poor treatment compliance or of not completing the study.
    12) Presence of a concurrent disease or condition that would interfere with study participation or
    affect safety
    13) History of recurrent infection or predisposition to infection, or of known immunodeficiency
    14) Use of a therapeutic monoclonal antibody within 90 days prior to the Screening Visit or history of allergic or anaphylactic reactions to any monoclonal antibody
    15) Presence or history of any hypersensitivity to KRN23 excipients that, in the judgment of the
    investigator, places the subject at increased risk for adverse effects
    16) Use of any investigational product or investigational medical device within 30 days prior to screening, or requirement for any investigational agent prior to completion of all scheduled
    study assessments OR, in Japan, use of any investigational product or investigational
    medical device within 4 months prior to screening, or requirement for any investigational agent prior to completion of all scheduled study assessments.

    * Criteria to be determined based on overnight fasting (min. 4 hours) values collected at the
    Screening and/or Baseline Visit
    ** If 25(OH)D levels are below the normal range, 25(OH)D supplementation will be prescribed.
    Assuming a subject meets all other eligibility requirements, the subject may be rescreened
    after a minimum of 7 days of treatment.
    1) punteggio Tanner pari o superiore a 4 secondo l’esame obiettivo
    2) percentile di altezza >50% in base alle norme nazionali locali
    3) uso di antiacidi di idrossido di alluminio (per esempio Maalox® e Mylanta®), corticosteroidi sistemici, acetazolamide e tiazidici nei 7 giorni precedenti la Visita di screening
    4) uso concomitante o pregresso di leuprorelina (per esempio Lupron®, Viadur®, Eligard®), triptorelina (TRELSTAR®), goserelina (Zoladex®) o altri farmaci noti per ritardare l’instaurarsi della fase puberale
    5) uso di terapia dell’ormone della crescita nei 12 mesi precedenti la Visita di screening
    6) presenza di nefrocalcinosi all’ecografia renale di grado 4 in base alla seguente scala:
    0 = normale
    1 = debole formazione iperecogena attorno alle piramidi midollari
    2 = formazione ecogena più intensa con echi a debole riempimento dell’intera piramide
    3 = echi di intensità uniforme nell’intera piramide
    4 = formazione di calcolo: concentrazione solitaria di echi in corrispondenza della punta della piramide
    7) Intervento chirurgico ortopedico programmato o raccomandato (impianto o asportazione), anche clip, a 8 piastre o osteotomia, nelle prime 40 settimane dello studio
    8) Ipocalcemia o ipercalcemia, definita come livelli di calcio nel siero al di fuori dei limiti della norma adeguati per età*
    9) Evidenza di iperparatiroidismo (livelli dell’ormone paratiroideo [PTH] 2,5 volte il limite superiore della norma [ULN])
    10) Uso di farmaco soppressore di PTH (per esempio cinacalcet, calcimimetici) nei 2 mesi precedenti la Visita di screening
    11) Presenza o anamnesi di qualsiasi condizione che, secondo il parere dello sperimentatore, pone il soggetto ad alto rischio di scarsa aderenza al trattamento o interruzione anticipata dello studio
    12) Presenza di malattia o condizione concomitante che interferirebbe con la partecipazione allo studio o comprometterebbe la sicurezza
    13) Anamnesi di infezione ricorrente o predisposizione a infezione o di nota immunodeficienza
    14) Uso di anticorpo monoclonale terapeutico nei 90 giorni precedenti la Visita di screening o anamnesi di reazioni allergiche o anafilattiche a qualsiasi anticorpo monoclonale
    15) Presenza o anamnesi di qualsiasi ipersensibilità agli eccipienti di KRN23 che, secondo il parere dello sperimentatore, pone il soggetto a maggior rischio di effetti avversi
    16) Uso di qualsiasi prodotto sperimentale o dispositivo medico sperimentale nei 30 giorni precedenti lo screening o necessità di qualsiasi agente sperimentale prima del completamento di tutte le valutazioni programmate previste dallo studio OPPURE, in Giappone, l’uso di qualsiasi prodotto sperimentale o dispositivo medico sperimentale nei 4 mesi precedenti lo screening o necessità di qualsiasi agente sperimentale prima del completamento di tutte le valutazioni programmate previste dallo studio

    * I criteri sono da stabilirsi in base ai valori rilevati di mattina a digiuno (da almeno 4 ore) durante la Visita di screening e/o Visita basale
    ** Se i livelli di 25(OH)D risultano al di sotto del range normale, sarà prescritta un’integrazione di 25(OH)D.
    Supponendo che il soggetto soddisfi tutti gli altri requisiti di idoneità, potrebbe essere sottoposto a ulteriore screening dopo almeno 7 giorni di trattamento.

    E.5 End points
    E.5.1Primary end point(s)
    The primary endpoint will be compared between the KRN23 and active control groups:
    • Change in rickets at Week 40 as assessed by the RGI-C global score
    L’endpoint primario sarà confrontato fra KRN23 e il gruppo di controllo attivo:
    • variazione nel rachitismo alla Settimana 40 in base al punteggio RGI-C globale
    E.5.1.1Timepoint(s) of evaluation of this end point
    Week 40
    Settimana 40
    E.5.2Secondary end point(s)
    • Proportion of subjects with a mean RGI-C global score ≥+2.0 (substantial healing) at Week 40 and
    Week 64
    • Change in rickets at Week 64 as assessed by the RGI-C global score
    • Change from baseline in RSS total score at Weeks 40 and 64
    • Change in lower extremity skeletal abnormalities, including genu varum and genu valgus, as
    assessed by the RGI-C long leg score at Weeks 40 and 64
    • Change in standing height (or recumbent length in children <2 years) from baseline to Weeks 24,
    40, and 64 in cm
    • Change in height-for-age z-scores from baseline to Weeks 24, 40, 64
    • Change in growth velocity from pre-treatment and post-treatment at Weeks 40 and 64 in cm/yr
    • Pharmacodynamic assessment
    • Pain, fatigue and physical function: Change from baseline in the PROMIS (Patient-Reported
    Outcomes Measurement Information System) Pediatric Pain Interference, Physical Function
    Mobility and Fatigue domain scores (for subjects ≥ 5 years of age at the Screening Visit) at Weeks
    24, 40 and 64
    • Pain intensity: Change from baseline in the Faces Pain Scale- Revised (FPS-R) (for subjects
    ≥ 5 years of age at the Screening Visit) at Weeks 24, 40 and 64
    • Walking ability: Change from baseline in the Six Minute Walk Test (6MWT) total distance and
    percent of predicted normal (for subjects ≥ 5 years of age at the Screening Visit) at Weeks 24, 40, and 64

    Pharmacokinetic:
    • Serum KRN23 (pre-dose level)

    Safety:
    Safety will be evaluated and compared with active control by the incidence, frequency, and severity of
    AEs and serious adverse events (SAEs), including clinically significant changes from baseline to
    scheduled time points for the following variables:
    • Vital signs and weight
    • Physical examinations
    • eGFR (calculated using the Bedside Schwartz equation)
    • Renal ultrasound to evaluate nephrocalcinosis
    • Echocardiogram (ECHO) (for subjects ≥ 5 years of age)
    • Chemistry, hematology, and urinalysis, including additional KRN23/XLH biochemical parameters
    of interest (serum 25(OH)D; lipase; amylase; creatinine; serum calcium and iPTH, and urinarycalcium and creatinine)
    • Anti-KRN23 antibody testing and dose-limiting toxicities
    • Concomitant medications
    • ECG

    Exploratory Assessments:
    • Health-related quality of life: Change from baseline in the SF-10 for Children Health Survey
    (SF-10; for subjects ≥ 5 years of age at the Screening Visit) at Weeks 24, 40, and 64
    • Dental evaluation to assess the number of dental events from dental caries, delay in eruption of the
    dentition, enamel hypoplasia, dental abscesses, and gingivitis
    Efficacia:
    • percentuale di soggetti con un punteggio RGI-C globale medio ≥+2,0 (guarigione sostanziale) alla Settimana 40 e alla Settimana 64
    • variazione nel rachitismo alla Settimana 64 in base al punteggio RGI-C globale
    • variazione rispetto al basale nel punteggio RSS totale alle settimane 40 e 64
    • variazione nelle alterazioni scheletriche a carico delle estremità inferiori, fra cui ginocchio varo e ginocchio valgo, in base al punteggio RGI-C femoro-podalico alle settimane 40 e 64
    • variazione nell’altezza in posizione eretta (o lunghezza ricorrente in bambini <2 anni) rispetto al basale alle settimane 24, 40 e 64 in cm
    • variazione nei punteggi z di altezza per età rispetto al basale alle settimane 24, 40, 64
    • variazione nella velocità di sviluppo dal periodo pre-trattamento e post-trattamento alle settimane 40 e 64 in cm/anno
    • valutazioni farmacodinamiche
    • dolore, astenia e funzione fisica: variazione rispetto al basale nei punteggi PROMIS (Patient–Reported Outcomes Measurement Information System) nei domini di interferenza di dolore pediatrico, mobilità della funzione fisica e astenia (per soggetti di età ≥5 anni alla Visita di screening) alle settimane 24, 40 e 64
    • intensità del dolore: variazione rispetto al basale nel punteggio FPS-R (Faces Pain Scale-Revised) (per soggetti di età ≥5 anni alla Visita di screening) alle settimane 24, 40 e 64
    • capacità di deambulazione: variazione rispetto al basale nella distanza totale percorsa nel test del cammino (6MWT) e percentuale della norma predetta (per soggetti di età ≥5 anni alla Visita di screening) alle settimane 24, 40 e 64

    Farmacocinetica:
    • KRN23 nel siero (livello pre-dose)

    Sicurezza:
    la sicurezza sarà valutata e confrontata contro il controllo attivo in termini di incidenza, frequenza e gravità di AE ed eventi avversi seri (SAE), vale a dire variazioni clinicamente significative rispetto al basale in coincidenza dei momenti definiti per le seguenti variabili:
    • segni vitali e peso
    • esami obiettivi
    • eGFR (calcolato secondo la formula bedside di Schwartz)
    • ecografia renale per la valutazione della nefrocalcinosi
    • ecocardiogramma (ECO) (per soggetti di età ≥5 anni)
    • chimica, ematologia e analisi delle urine, con parametri biochimici aggiuntivi su KRN23/XLH di interesse (25(OH)D nel siero; lipasi; amilasi; creatinina; calcio nel siero e iPTH e calcio e creatinina nelle urine)
    • test per la rilevazione di anticorpi anti-KRN23 e tossicità dose-limitanti
    • terapie concomitanti
    • ECG
    Valutazioni esplorative:
    • qualità della vita correlata alla salute: variazione rispetto al basale nel SF-10 per la Children Health Survey (SF-10; per soggetti di età ≥5 alla Visita di screening) alle settimane 24, 40 e 64
    • valutazione dentistica per verificare il numero di eventi dentali quali carie, ritardo di eruzione della dentizione, ipoplasia dello smalto, ascessi e gengivite

    E.5.2.1Timepoint(s) of evaluation of this end point
    weeks 24, 40 & 64
    Alle settimane 24, 40 e 64
    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 Yes
    E.6.4Safety Yes
    E.6.5Efficacy Yes
    E.6.6Pharmacokinetic Yes
    E.6.7Pharmacodynamic Yes
    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 Yes
    E.8.1.3Single blind No
    E.8.1.4Double blind No
    E.8.1.5Parallel group Yes
    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) Yes
    E.8.2.2Placebo No
    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 concerned4
    E.8.5The trial involves multiple Member States Yes
    E.8.5.1Number of sites anticipated in the EEA10
    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
    Canada
    France
    Germany
    Ireland
    Italy
    Japan
    Korea, Republic of
    Spain
    Sweden
    United Kingdom
    United States
    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 years4
    E.8.9.1In the Member State concerned months0
    E.8.9.1In the Member State concerned days0
    E.8.9.2In all countries concerned by the trial years4
    E.8.9.2In all countries concerned by the trial months0
    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.1.1Number of subjects for this age range: 1
    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) No
    F.1.1.5Children (2-11years) Yes
    F.1.1.5.1Number of subjects for this age range: 60
    F.1.1.6Adolescents (12-17 years) No
    F.1.2Adults (18-64 years) No
    F.1.3Elderly (>=65 years) No
    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 No
    F.3.3.1Women of childbearing potential not using contraception Information not present in EudraCT
    F.3.3.2Women of child-bearing potential using contraception Information not present in EudraCT
    F.3.3.3Pregnant women Information not present in EudraCT
    F.3.3.4Nursing women Information not present in EudraCT
    F.3.3.5Emergency situation Information not present in EudraCT
    F.3.3.6Subjects incapable of giving consent personally Information not present in EudraCT
    F.3.3.7Others Information not present in EudraCT
    F.4 Planned number of subjects to be included
    F.4.1In the member state6
    F.4.2 For a multinational trial
    F.4.2.1In the EEA 22
    F.4.2.2In the whole clinical trial 60
    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)
    current standard of care or post study extension for 96 weeks or whenever the product is licenced
    Terapia standard attuale o prosecuzione dopo lo studio del trattamento per ulteriori 96 settimane o fino all’immissione in commercio del farmaco in studio.
    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 Decision2016-09-23
    N.Ethics Committee Opinion of the trial application
    N.Ethics Committee Opinion: Reason(s) for unfavourable opinion
    N.Date of Ethics Committee Opinion
    P. End of Trial
    P.End of Trial StatusPrematurely Ended
    P.Date of the global end of the trial2017-04-07
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