Flag of the European Union EU Clinical Trials Register Help

Clinical trials

The European Union Clinical Trials Register allows you to search for protocol and results information on:
  • interventional clinical trials that are conducted in the European Union (EU) and the European Economic Area (EEA);
  • clinical trials conducted outside the EU / EEA that are linked to European paediatric-medicine development.
  • Learn   more about the EU Clinical Trials Register   including the source of the information and the legal basis.


    The EU Clinical Trials Register currently displays   42567   clinical trials with a EudraCT protocol, of which   7008   are clinical trials conducted with subjects less than 18 years old.
    The register also displays information on   18700   older paediatric trials (in scope of Article 45 of the Paediatric Regulation (EC) No 1901/2006).


    Phase 1 trials conducted solely in adults and that are not part of an agreed PIP are not public in the EU CTR (refer to European Guidance 2008/C 168/02   Art. 3 par. 2 and   Commission Guideline 2012/C 302/03,   Art. 5) .

    Clinical Trials marked as "Trial now transitioned" were transitioned to the Clinical Trial Regulation 536/2014 and can be further followed in the Clinical Trial Information System  
     
    Examples: Cancer AND drug name. Pneumonia AND sponsor name.
    How to search [pdf]
    Search Tips: Under advanced search you can use filters for Country, Age Group, Gender, Trial Phase, Trial Status, Date Range, Rare Diseases and Orphan Designation. For these items you should use the filters and not add them to your search terms in the text field.
    Advanced Search: Search tools
     

    < Back to search results

    Print Download

    Summary
    EudraCT Number:2008-003865-23
    Sponsor's Protocol Code Number:HPN-100-004
    National Competent Authority:UK - MHRA
    Clinical Trial Type:EEA CTA
    Trial Status:Prematurely Ended
    Date on which this record was first entered in the EudraCT database:2008-07-25
    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 ConcernedUK - MHRA
    A.2EudraCT number2008-003865-23
    A.3Full title of the trial
    A Phase 2, Switch-Over, Dose-Escalation Study of the Safety and Tolerability of HPN-100 (glyceryl tri-[4-phenylbutyrate]) Compared to Sodium Phenylbutyrate in Adult and Pediatric Subjects with Urea Cycle Disorders
    A.4.1Sponsor's protocol code numberHPN-100-004
    A.7Trial is part of a Paediatric Investigation Plan Information not present in EudraCT
    A.8EMA Decision number of Paediatric Investigation Plan
    B. Sponsor Information
    B.Sponsor: 1
    B.1.1Name of SponsorHyperion Therapeutics Limited
    B.1.3.4CountryUnited Kingdom
    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 support
    B.4.2Country
    B.5 Contact point designated by the sponsor for further information on the trial
    B.5.1Name of organisation
    B.5.2Functional name of contact point
    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 No
    D.2.5.1Orphan drug designation number
    D.3 Description of the IMP
    D.3.1Product nameglyceryl tri-(4-phenylbutyrate)(GT4P)
    D.3.2Product code HPN-100
    D.3.4Pharmaceutical form Oral liquid
    D.3.4.1Specific paediatric formulation Information not present in EudraCT
    D.3.7Routes of administration for this IMPOral use
    D.3.8 to D.3.10 IMP Identification Details (Active Substances)
    D.3.8INN - Proposed INNNA
    D.3.9.1CAS number NA
    D.3.9.2Current sponsor codeHPN-100
    D.3.9.3Other descriptive nameglyceryl tri-(4-phenylbutyrate)
    D.3.10 Strength
    D.3.10.1Concentration unit mg/ml milligram(s)/millilitre
    D.3.10.2Concentration typeequal
    D.3.10.3Concentration number1 to 1
    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) Information not present in EudraCT
    D.3.11.3.1Somatic cell therapy medicinal product No
    D.3.11.3.2Gene therapy medical product No
    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 Information not present in EudraCT
    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 Information not present in EudraCT
    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
    Urea Cycle Disorder (urea cycle enzyme or transporter deficiency)
    MedDRA Classification
    E.1.2 Medical condition or disease under investigation
    E.1.2Version 9.1
    E.1.2Level LLT
    E.1.2Classification code 10013373
    E.1.2Term Disorders of urea cycle metabolism
    E.1.3Condition being studied is a rare disease Yes
    E.2 Objective of the trial
    E.2.1Main objective of the trial
    The primary objective of this study is to evaluate the safety and tolerability of escalating doses of HPN-100 compared to a constant dose of sodium PBA (European Trade name: AMMONAPS®; United States trade name BUPHENYL®) in adult and pediatric subjects with UCDs.
    E.2.2Secondary objectives of the trial
    Secondary objectives are to assess:
    • plasma and urine PK characteristics of HPN-100 and sodium phenylbutyrate (sodium PBA) metabolites
    • preliminary evidence of efficacy (as assessed by venous ammonia levels and urinary excretion of PAGN)
    • compliance with diet and study drug treatment
    • subject-reported outcomes of symptoms and drug preference
    E.2.3Trial contains a sub-study No
    E.3Principal inclusion criteria
    • Male and female subjects ≥ 6 years old
    • Signed informed consent by subject and/or subject’s legally acceptable representative
    • Diagnosis of urea cycle disorder (enzyme or transporter deficiency) confirmed via enzymatic, biochemical or genetic testing
    • Currently being treated with sodium PBA for a diagnosis of UCD for at least one week prior to the screening visit
    • Able to perform and comply with study activities (including the ability to adhere to 24-hour urine collections both in the clinic and after discharge; i.e., no subjects in diapers)
    • Willing to maintain a constant diet throughout the study (unless the investigator recommends a change based on safety considerations)
    • Negative pregnancy test for all females of childbearing potential
    • All females of childbearing potential and all sexually active males must agree to use an acceptable method of contraception throughout the study
    E.4Principal exclusion criteria
    • Use of any investigational drug (sodium PBA excepted) within 30 days prior to Day 1
    • Active infection (viral or bacterial) or any other condition that may increase ammonia levels
    • Laboratory values outside the normal range that are determined to be clinically significant by the investigator
    • Any clinical or laboratory abnormality of Grade 3 or greater severity according to the CTCAE v3.0 (or for conditions not covered by the CTCAE, a severe or life-threatening toxicity); except that Grade 3 elevations in liver enzymes are allowed in an otherwise clinically stable subject
    • Use of any medication known to significantly affect renal clearance (e.g., probenecid) or to increase protein catabolism (e.g., corticosteroids), or other medication (e.g., valproate) known to increase ammonia levels, within the 24 hours prior to Day 1
    • History of diagnosis with long QT syndrome or QTc interval > 450 msec at screening
    • Other medical conditions which in the judgment of the investigator preclude entry
    • Known hypersensitivity to PAA or PBA
    • Creatinine levels ≥ 1.5  upper limit of normal (ULN)
    • Liver transplant, including hepatocellular transplant
    • Currently treated with sodium benzoate or Carbaglu® (carglumic acid)
    E.5 End points
    E.5.1Primary end point(s)
    The primary objective of this study is to evaluate the safety and tolerability of escalating doses of HPN-100 compared to a constant dose of sodium PBA (European Trade name: AMMONAPS®; United States trade name BUPHENYL®) in adult and pediatric subjects with UCDs.
    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 Yes
    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 No
    E.8.1.2Open Yes
    E.8.1.3Single blind No
    E.8.1.4Double blind No
    E.8.1.5Parallel group No
    E.8.1.6Cross over No
    E.8.1.7Other Yes
    E.8.1.7.1Other trial design description
    Switch-Over Dose Escalation
    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.8.3 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 No
    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
    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
    A single pre-dose blood sample will be drawn for measurement of PBA, PBG, PBGN, PAA, PAG, and PAGN. The time of day at which the blood sample is drawn will be recorded as well as the time since the last dose of either HPN-100 or sodium PBA.
    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 months
    E.8.9.1In the Member State concerned days
    E.8.9.2In all countries concerned by the trial years1
    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) Yes
    F.1.1.6Adolescents (12-17 years) Yes
    F.1.2Adults (18-64 years) Yes
    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 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
    Children (greater than 6 years of age) and Adolescent - will need a parent or gaurdian to provide assent to participate in the clinical trial
    F.3.3.7Others No
    F.4 Planned number of subjects to be included
    F.4.1In the member state16
    F.4.2 For a multinational trial
    F.4.2.1In the EEA 16
    F.4.2.2In the whole clinical trial 16
    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)
    Not Applicable
    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 Decision2008-09-08
    N.Ethics Committee Opinion of the trial applicationFavourable
    N.Ethics Committee Opinion: Reason(s) for unfavourable opinion
    N.Date of Ethics Committee Opinion2008-07-30
    P. End of Trial
    P.End of Trial StatusPrematurely Ended
    P.Date of the global end of the trial2009-01-05
    For support, visit the EMA Service Desk , log in using your EMA account and open a ticket specifying "EU CTR" in your request.
    If you do not have an account, please visit the EMA Account management page page click on "Create an EMA account" and follow the instructions.
    The status of studies in GB is no longer updated from 1.1.2021
    For the UK, as from 1.1.2021, EU Law applies only to the territory of Northern Ireland (NI) to the extent foreseen in the Protocol on Ireland/NI
    EU Clinical Trials Register Service Desk: https://servicedesk.ema.europa.eu
    European Medicines Agency © 1995-2022 | Domenico Scarlattilaan 6, 1083 HS Amsterdam, The Netherlands
    Legal notice
    EMA HMA