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    Summary
    EudraCT Number:2021-001081-38
    Sponsor's Protocol Code Number:ARCT-810-03
    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:2022-09-14
    Trial 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 number2021-001081-38
    A.3Full title of the trial
    Phase 2, Randomized, Double-Blind, Placebo-Controlled, Nested Single and Multiple Ascending Dose Study to Evaluate the Safety, Tolerability and Pharmacokinetics of ARCT-810 in Adolescent and Adult Participants with Ornithine Transcarbamylase Deficiency
    Studio di fase 2, randomizzato, in doppio cieco, controllato da placebo, nidificato, con dose ascendente singola/multipla per valutare la sicurezza, la tollerabilità e la farmacocinetica di ARCT-810 in partecipanti adolescenti e adulti con deficit di ornitina transcarbamilasi
    A.3.1Title of the trial for lay people, in easily understood, i.e. non-technical, language
    Phase 2, Randomized, Double-Blind, Placebo-Controlled, Nested Single and Multiple Ascending Dose Study to Evaluate the Safety, Tolerability and Pharmacokinetics of ARCT-810 in Adolescent and Adult Participants with Ornithine Transcarbamylase Deficiency
    Fase 2, randomizzato, in doppio cieco, controllato da placebo, nidificato, con dose ascendente singola/multipla per valutare la sicurezza, la tollerabilità e la farmacocinetica di ARCT-810 in partecipanti adolescenti e adulti con deficit di ornitina transcarbamilasi
    A.3.2Name or abbreviated title of the trial where available
    Phase 2 nested single/multiple ascending dose study of ARCT-810 in Participants with OTC Deficiency
    Studio di Fase 2 nidificato, con dose ascendente singola/multipla di ARCT-810 con deficit di OTC
    A.4.1Sponsor's protocol code numberARCT-810-03
    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 SponsorArcturus 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 supportArcturus Therapeutics, Inc.
    B.4.2CountryUnited States
    B.5 Contact point designated by the sponsor for further information on the trial
    B.5.1Name of organisationArcturus Therapeutics, Inc.
    B.5.2Functional name of contact pointClinial Trial Manager
    B.5.3 Address:
    B.5.3.1Street Address10628 Science Center Drive, Suite 250
    B.5.3.2Town/ citySan Diego
    B.5.3.3Post codeCA 92121
    B.5.3.4CountryUnited States
    B.5.4Telephone number0012317307300
    B.5.6E-mailelizabeth.colon@arcturusrx.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.2.1.2Country which granted the Marketing AuthorisationItaly
    D.2.5The IMP has been designated in this indication as an orphan drug in the Community No
    D.2.5.1Orphan drug designation number
    D.3 Description of the IMP
    D.3.1Product nameARCT-810
    D.3.2Product code [ARCT-810]
    D.3.4Pharmaceutical form Concentrate for solution for injection/infusion
    D.3.4.1Specific paediatric formulation No
    D.3.7Routes of administration for this IMPIntravenous use
    D.3.8 to D.3.10 IMP Identification Details (Active Substances)
    D.3.9.2Current sponsor codeARCT-810
    D.3.9.3Other descriptive namemRNA codificante per Ornitina transcarbamilasi modificata
    D.3.10 Strength
    D.3.10.1Concentration unit mg/ml milligram(s)/millilitre
    D.3.10.2Concentration typeequal
    D.3.10.3Concentration number1
    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) No
    The IMP is a:
    D.3.11.3Advanced Therapy IMP (ATIMP) Yes
    D.3.11.3.1Somatic cell therapy medicinal product No
    D.3.11.3.2Gene therapy medical product Yes
    D.3.11.3.3Tissue Engineered Product No
    D.3.11.3.4Combination ATIMP (i.e. one involving a medical device) No
    D.3.11.3.5Committee on Advanced therapies (CAT) has issued a classification for this product No
    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 No
    D.2.5.1Orphan drug designation number
    D.3 Description of the IMP
    D.3.1Product nameAcetato di sodio (1,2-13C2)
    D.3.2Product code [Non Applicabile]
    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 56374-56-2
    D.3.9.2Current sponsor codeAcetato di sodio (1,2-13C2)
    D.3.9.4EV Substance CodeSUB236073
    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.8 Information on Placebo
    D.8 Placebo: 1
    D.8.1Is a Placebo used in this Trial?Yes
    D.8.3Pharmaceutical form of the placeboSolution for infusion
    D.8.4Route of administration of the placeboIntravenous use
    E. General Information on the Trial
    E.1 Medical condition or disease under investigation
    E.1.1Medical condition(s) being investigated
    Ornithine transcarbamylase deficiency
    Deficit di Ornitina transcarbamilasi
    E.1.1.1Medical condition in easily understood language
    Ornithine transcarbamylase deficiency
    Deficit di Ornitina transcarbamilasi
    E.1.1.2Therapeutic area Diseases [C] - Nutritional and Metabolic Diseases [C18]
    MedDRA Classification
    E.1.2 Medical condition or disease under investigation
    E.1.2Version 21.1
    E.1.2Level LLT
    E.1.2Classification code 10013373
    E.1.2Term Disorders of urea cycle metabolism
    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
    To assess safety and tolerability of ARCT-810 in adult and adolescent (=12 years) participants with OTC deficiency.
    Valutare la sicurezza e la tollerabilità di ARCT-810 in partecipanti adulti e adolescenti (=12 anni) con deficit di OTC
    E.2.2Secondary objectives of the trial
    To assess in adult and adolescent (=12 years) participants with OTC deficiency:
    1. The pharmacokinetics (PK) of ARCT-810 with a single dose and multiple (up to 6) doses administered once every two weeks
    2. The pharmacodynamic (PD) activity of ARCT-810 administered once every two weeks as determined by 13C ureagenesis assay and 24-hour plasma ammonia profile
    Valutare nei partecipanti adulti e adolescenti (=12 anni) con deficit di OTC:
    1. La farmacocinetica (FC) di ARCT-810 con una singola dose e dosi multiple (fino a 6) somministrate ogni due settimane
    2. L'attività farmacodinamica (FD) di ARCT-810 somministrato ogni due settimane come stabilito dal test di ureagenesi13C e dal profilo dell'ammoniaca plasmatica nelle 24 ore
    E.2.3Trial contains a sub-study No
    E.3Principal inclusion criteria
    1.Must have adequate cognitive ability, in the opinion of the Investigator, to understand the investigational nature of the study and study requirements, to recall symptoms over a 1-week time period, and to give informed consent. Must be willing and able to comply with all the protocol requirements (...). Adolescent participants (<18 years) must sign an assent form and their parent or legal representative must sign an informed consent form.
    2.Males and females aged 12 to 65 years inclusive, at Screening.
    3.Documented diagnosis of late onset (defined as first manifestation of signs and symptoms at =1 month of age) OTC deficiency confirmed with genetic testing. In participants not previously genetically confirmed, testing should include OTC gene sequencing and deletion/duplication testing.
    4.No hospitalizations for metabolic decompensation within 3 months and no more than 2 hospitalizations for metabolic decompensation within 12 months prior to the first dose of Study Drug, and no clinical symptoms of hyperammonemia within 1 month prior to signing informed consent.
    5.If using nitrogen ammonia scavenger therapy, must be on a stable regimen (no change in dose or dose frequency) for = 28 days prior to signing informed consent.
    6.Participant has, in the opinion of the Investigator, maintained a stable protein restricted diet (which may or may not include medical foods) and/or amino acid supplementation with no changes in calorie or protein goals and no changes in medical food and/or amino acid supplementation for at least 28 days prior to signing informed consent and participant is willing to remain on the same diet for the full duration of the study. Participants may have their diet adjusted for optimization by the study dietician at the Study Center during the screening period (Section 6.1).
    7.Good general health, aside from OTC deficiency and its complications, as determined by no clinically significant abnormal findings on medical history (e.g., previous acute coronary syndrome within 6 months of Screening, or major surgery within 3 months of Screening), clinical laboratory test results (other than ammonia concentrations and other biomarkers), vital sign measurements, 12-lead ECG results, or physical examination at Screening that, in the opinion of the Investigator or Sponsor Medical monitor (or designee), would interfere with Study Drug administration, jeopardize the safety of the participant, or impact the validity of the study results.
    8.BMI = 18.0 – 32.0 kg/m2, inclusive for adults, and >5th percentile for adolescents =12 to 17 years old.
    9.Participants must refrain from strenuous exercise/activity (e.g., heavy lifting, weight training, intense aerobics classes etc.) and consuming alcohol for at least 72 hours prior to study visits.

    To see all Inclusion criteria see Protocol
    1. I partecipanti devono avere capacità cognitive sufficienti, secondo il parere dello Sperimentatore, per comprendere la natura sperimentale dello studio e i requisiti dello studio, ricordare i sintomi per 1 settimana e rilasciare il consenso informato. Devono volere ed essere in grado di rispondere a tutti i requisiti del protocollo, completare tutte le visite dello studio e firmare un modulo di consenso informato in conformità con linee guida istituzionali e normative. I partecipanti adolescenti (<18 anni) devono firmare un modulo di assenso e i loro genitori o rappresentanti legali devono firmare un modulo di consenso informato.
    2. Maschi e femmine di età da 12 a 65 anni compresi, allo screening.
    3. Diagnosi documentata di deficit di OTC confermata da test genetici. Nei partecipanti senza precedente conferma genetica, il test deve comprendere la sequenza genetica OTC e i test di delezione/duplicazione.
    4. Nessun ricovero per scompenso metabolico entro 3 mesi e non più di due ricoveri per scompenso metabolico nei 12 mesi prima della prima dose del farmaco dello studio e nessun sintomo clinico di iperammoniemia fino a 1 mese prima di firmare il consenso informato.
    5. Se è in corso una terapia con scavenger di azoto ammoniacale, deve avere un regime stabile (nessun cambiamento o frequenza del dosaggio) per = 28 giorni prima di firmare il consenso informato.
    6. Il partecipante, sulla base dell'opinione dello Sperimentatore, ha seguito una dieta ipoproteica stabile (che può includere o meno alimenti medici) e/o integrazione con amminoacidi senza cambiamenti negli obiettivi calorici o proteici e senza cambiamenti negli alimenti medici e/o negli integratori di amminoacidi assunti per almeno 28 giorni prima di firmare il consenso informato e il partecipante è favorevole a continuare la stessa dieta per l'intera durata dello studio. I partecipanti possono avere un adeguamento della dieta da parte del dietologo dello studio, al fine di ottimizzarla, presso il Centro dello studio durante il periodo di screening (Sezione 3.7.1).
    7. Buona salute generale, a parte il deficit di OTC e le relative complicanze, come dimostrato dall'assenza di segni clinici anomali significativi durante l'anamnesi (ad es. precedente sindrome coronarica acuta entro 6 mesi dallo screening o interventi chirurgici importanti entro 3 mesi dallo screening), dai risultati delle analisi di laboratorio (diverse dalle concentrazioni di ammoniaca e altri biomarcatori), dai rilievi dei segni vitali, dai risultati di ECG a 12 derivazioni, o dall’esame fisico allo screening che, secondo il parere dello Sperimentatore o del Supervisore medico dello sponsor (o incaricato), interferirebbero con la somministrazione del farmaco dello studio, minerebbero la sicurezza delpartecipante o comprometterebbero la validità dei risultati dello studio.
    8. IMC = 18,0 – 32,0 kg/m2, anche per adulti e >5o percentile per gli adolescenti da =12 a 17 anni di età.
    9. I partecipanti devono essere favorevoli ad astenersi da esercizi/attività faticose (ad es. sollevamento pesi, allenamento con pesi, lezioni di aerobica intensiva, ecc.) e dal consumo di alcol per almeno 72 ore prima delle visite dello studio.
    Contraccezione
    10. I maschi sono idonei a partecipare se accettano i seguenti requisiti durante il periodo di intervento e per almeno 60 giorni dopo l'ultima dose del farmaco dello studio, equivalenti al periodo necessario per ridurre al minimo qualunque potenziale rischio di sicurezza per la riproduzione correlato al farmaco dello studio:
    a. Evitare di donare sperma, E
    b. Deve accettare di usare un preservativo per uomo durante i rapporti sessuali con una donna in età fertile (WOCBP), come definito sotto. Inoltre, le partner WOCBP di partecipanti maschi dovranno usare un metodo contraccettivo altamente efficace (v. la sezione Contraccezione nel protocollo completo, Sezione 6.3.1)

    Per ulteriori criteri di inclusione si rimanda alla Sinossi e al Procollo.
    E.4Principal exclusion criteria
    1.Uncontrolled hypertension (Systolic BP > 160 and/or diastolic BP >100 mm Hg)
    2.Any participant who develops symptoms of infection, including a temperature of 38.0 degrees Celsius (100.4 degrees Fahrenheit) or above during the screening period must be asymptomatic for at least 7 days prior to dosing on Day 1. Any participant who requires systemic antimicrobial treatment must have both discontinued antimicrobial therapy for at least 7 days and be symptom free for at least 7 days prior to dosing. The screening period may be extended, as necessary, for up to 14 days without need to repeat screening evaluations. In this instance the diet run-in period should also be extended. Participants who are not free of symptoms and/or antimicrobials for at least 7 days prior to Day 1 despite the aforementioned extension of the screening period may be rescreened once medication is complete, and their clinical condition is stable for at least 7 days.
    3.Malignancy within 5 years, except for basal or squamous cell carcinoma of the skin or carcinoma in situ of the cervix that has been successfully treated. Participants with a history of other malignancies that have been treated with curative intent and which have no recurrence within 5 years may also be eligible if approved by the Sponsor medical monitor (or designee)
    4.History of any OTC gene therapy or hepatocyte transplantation.
    5.History of any organ transplant or stem cell transplant.
    6.History of severe allergic reaction (i.e., anaphylaxis, generalized urticaria, angioedema, or other significant reaction) to a liposomal or PEG containing product.
    7.Abuse of medications, illicit drugs or alcohol within 1 year prior to screening, per the investigator.
    8.Dependence on inhaled (smoked or vaped) or oral cannabis products, in the opinion of the investigator. Non-dependent cannabis users must agree to abstain from 2 days before each clinic visit through the time of the visit.
    9.Blood donation of 50 to 499 mL within 30 days of Screening or of > 499 mL within 60 days of Screening
    10.Screening laboratory results as follows, or any other clinically significant abnormalities in screening laboratory values that, in the opinion of the Investigator or Sponsor Medical Monitor (or designee) would render a participant unsuitable for inclusion:
    •ALT or AST > 2x ULN
    •Total bilirubin > 1.5 mg/dL, unless due to documented Gilbert's
    syndrome in which case total bilirubin must be <3 mg/dL
    •Platelet count < 100x109/L
    •Estimated glomerular filtration rate (eGFR) < 60 mL/min/1.73m2
    calculated by Modification to Diet in Renal Disease [MDRD] study
    equation.
    •Abnormal thyroid function tests
    •Presence of human immunodeficiency virus antibody, hepatitis C virus
    antibody, or hepatitis B surface antigen
    11.Diabetes that is not, in the opinion of the investigator, adequately controlled with diet +/- antidiabetic medication.
    12.Clinically significant anemia in the opinion of the investigator
    13.Changes in maintenance therapies (e.g., nitrogen scavengers, medical foods and dietary supplements) within 28 days prior to Day 1. Participants who require a change in maintenance therapy may be rescreened once they have been on a stable regimen for = 28 days.

    To see all exclusion criteria see Protocol.
    1. Ipertensione non controllata (pressione sistolica > 160 e/o pressione diastolica >100 mm Hg)
    2. I partecipanti che dovessero sviluppare sintomi di infezione, tra cui una temperatura pari o superiore a 38,0 gradi Celsius (100,4 gradi Fahrenheit) durante il periodo di screening, dovranno essere asintomatici per almeno 7 giorni prima del dosaggio del Giorno 1. I partecipanti che dovessero avere bisogno di un trattamento antimicrobico sistemico dovranno avere interrotto la terapia antimicrobica da almeno 7 giorni ed essere asintomatici da almeno 7 giorni prima del dosaggio. Il periodo di screening può essere esteso, se necessario, fino a 14 giorni in più senza la necessità di ripetere le valutazioni dello screening. In questo caso, anche il periodo di dieta va esteso. I partecipanti che non siano esenti da sintomi e/o antimicrobici da almeno 7 giorni prima del Giorno 1 nonostante l'estensione del periodo di screening, possono essere nuovamente sottoposti a screening una volta completato il trattamento e con una condizione clinica stabile da almeno 7 giorni.
    3. Malignità entro 5 anni, eccetto per il carcinoma basocellulare o squamocellulare della pelle o carcinoma in situ della cervice trattato con successo. Anche i partecipanti con una storia di altre malignità trattate con intento curativo e che non hanno avuto ricorrenze entro 5 anni possono essere arruolati se approvati dal Supervisore medico dello sponsor (o incaricato)
    4. Storia di terapia genica di qualunque tipo per OTC, trapianto di epatociti o cellule staminali.
    5. Storia di trapianto di organi.
    6. Storia di gravi reazioni allergiche (ad es., anafilassi, orticaria generalizzata, angioedema o altre reazioni significative) a un prodotto liposomiale o contenente PEG.
    7. Abuso di farmaci, sostanze stupefacenti o alcol entro 1 anno prima dello screening, riscontrato dallo Sperimentatore.
    8. Dipendenza da prodotti a base di cannabis da inalare (per fumo o vapore) o per assunzione, a discrezione dello Sperimentatore. Gli utilizzatori non dipendenti da cannabis devono accettare di astenersi dall'uso a partire da 2 giorni prima di ogni visita clinica e per tutta la durata della visita.
    9. Donazione di 50 - 499 mL di sangue entro 30 giorni dallo screening o di > 499 mL entro 60 giorni dallo screening
    10. Screening dei risultati di laboratorio come segue, o altre anomalie cliniche significative nello screening dei valori di laboratorio che, secondo il parere dello Sperimentatore o del Supervisore medico dello sponsor (o incaricato) renderebbe un partecipante inadatto all'inclusione:
    • ALT o AST > 2x ULN
    • Bilirubina totale > 1,5 mg/dL, a meno che sia dovuta alla sindrome di Gilbert, nel qual caso la bilirubina totale deve essere <3 mg/dL
    • Conta piastrinica < 100x109/L
    • Velocità di filtrazione glomerulare (eGFR) < 60 mL/min/1,73m2stimatautilizzando l’equazione dello studio MDRD [Modification to Diet in RenalDisease].
    • Anomalie negli esami della funzionalità tiroidea
    • Presenza di anticorpi al virus dell'immunodeficienza umana, anticorpi al virus dell'epatite C, o antigeni di superficie dell'epatite B
    11. Diabete che, secondo il parere dello Sperimentatore, non è adeguatamente controllato con la dieta +/- con farmaci antidiabetici.
    12. Anemia clinicamente significativa secondo il parere dello Sperimentatore

    Per ulteriori criteri di esclusione si rimanda alla Sinossi
    E.5 End points
    E.5.1Primary end point(s)
    The primary endpoint of the study is the safety and tolerability of ARCT-810, as assessed by determining the incidence, severity, and dose-relationship of adverse events, changes in ECG, changes in vital signs and changes in the laboratory parameters by dose level. The safety results in participants dosed with ARCT-810 will be compared with those from participants dosed with placebo.
    La sicurezza e la tollerabilità di ARCT-810 saranno valutate stabilendo l'incidenza, la gravità e la relazione al dosaggio degli eventi avversi, dei cambiamenti nell'ECG, dei cambiamenti dei segni vitali e nei parametri di laboratorio in funzione del livello di dosaggio.
    I risultati relativi alla sicurezza nei partecipanti che hanno ricevuto una dose di ARCT-810 saranno confrontati con i risultati dei partecipanti che hanno ricevuto il placebo.
    E.5.1.1Timepoint(s) of evaluation of this end point
    Multiple timepoints throughout the study.
    Punti temporali multipli durante lo studio.
    E.5.2Secondary end point(s)
    Pharmacokinetics
    1. The plasma pharmacokinetics of ARCT-810 will be assessed based on the observed plasma concentrations of mRNA-1801 and ATX-95 at multiple timepoints throughout the study.
    Pharmacodynamics
    2. Within participant change from baseline in area under curve and peak plasma concentration for 13C-urea at Day 30 (Week 5), Day 72 (Week 11) and Day 78 (Week 12).
    3. Within participant change from baseline in area under the curve and peak plasma ammonia for the 24-hour plasma ammonia profile at Day 72 (Week 11)
    Farmacocinetica
    1. Sarà valutata la farmacocinetica del plasma di ARCT-810 sulla base delle concentrazioni plasmatiche osservate di mRNA-1801 e ATX-95 in diversi momenti nel corso dello studio.
    Farmacodinamica
    2. Entro il cambiamento del partecipante dal basale nell'area sotto la curva e picco di concentrazioni plasmatiche di urea 13C nel Giorno 30 (Settimana 5), Giorno 72 (Settimana 11) e Giorno 78 (Settimana 12).
    3. Entro il passaggio del partecipante dal basale all'area sotto la curva e picco di concentrazione plasmatica di ammoniaca per il profilo dell'ammoniaca plasmatica in 24 ore il Giorno 72 (Settimana 11).
    E.5.2.1Timepoint(s) of evaluation of this end point
    Pharmacokinetics secondary endpoint:
    Multiple timepoints throughout the study - Days 1-3, Day 8, Day 15, Day 29, Day 43, Day 57, Days 71-73, Day 78 and Day 113.

    Pharmacodynamics secondary endpoint:
    Change from baseline to Day 30 (Week 5), Day 72 (Week 11) and Day 78 (Week 12) for 13C-urea;
    Change from baseline to Day 72 (Week 11) for 24-hour plasma ammonia profile.
    Endpoint secondario di farmacocinetica:
    Punti temporali multipli durante lo studio: giorni 1-3, giorno 8, giorno 15, giorno 29, giorno 43, giorno 57, giorni 71-73, giorno 78 e giorno 113.

    Endpoint secondario di farmacodinamica:
    Modifica dal valore basale al Giorno 30 (Settimana 5), Giorno 72 (Settimana 11) e Giorno 78 (Settimana 12) per 13C-urea;
    Modifica dal basale al giorno 72 (Settimana 11) per il profilo dell'ammoniaca plasmatica nelle 24 ore.
    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 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) Yes
    E.7.3Therapeutic confirmatory (Phase III) No
    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 EEA16
    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
    France
    Sweden
    Spain
    Italy
    Belgium
    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
    The end of trial is defined as the last visit of the last subject.
    La conclusione della sperimentazione è definita come l'ultima visita dell'ultimo paziente.
    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 months1
    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 months6
    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) No
    F.1.1.5Children (2-11years) No
    F.1.1.6Adolescents (12-17 years) Yes
    F.1.1.6.1Number of subjects for this age range: 10
    F.1.2Adults (18-64 years) Yes
    F.1.2.1Number of subjects for this age range: 10
    F.1.3Elderly (>=65 years) Yes
    F.1.3.1Number of subjects for this age range: 4
    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 No
    F.3.3.7Others No
    F.4 Planned number of subjects to be included
    F.4.1In the member state4
    F.4.2 For a multinational trial
    F.4.2.1In the EEA 14
    F.4.2.2In the whole clinical trial 24
    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)
    After the end of their participation in the trial, Subjects will be treated according to the local standard of care guidelines. If ARCT-810 is found to be safe and effective at improving urea cycle function, an open-label extension study may be
    offered to participants in this study.
    Dopo la fine della loro partecipazione allo studio, i soggetti saranno trattati secondo le linee guida locali per gli standard di cura. Se ARCT-810 risulta essere sicuro ed efficace nel migliorare la funzione del ciclo dell'urea, può essere offerto ai partecipanti a questo studio uno studio di estensione in aperto.
    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 Decision2023-03-03
    N.Ethics Committee Opinion of the trial applicationFavourable
    N.Ethics Committee Opinion: Reason(s) for unfavourable opinion
    N.Date of Ethics Committee Opinion2023-01-19
    P. End of Trial
    P.End of Trial StatusOngoing
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