Observational Study of Adults and Adolescents With Erythropoietic Protoporphyria (EPP) and X-linked Porphyria (XLP) (stEPP)
Prospective Clinical Assessment Study in Adolescents and Adults With Erythropoietic Protoporphyria (EPP) and X-Linked Porphyria (XLP) (STEPP)
The purpose of this study is to collect information about the effects of EPP/XLP in adults and adolescents. This is an observational study in which participants will not receive any treatment. Study details include:
- The study duration will be up to 6 months for each participant.
- After Screening, participants will have a Baseline (Day 1) visit and return for visits every 4 weeks through 24 weeks.
- Assessments to evaluate EPP/XLP will include clinical laboratory tests, physical exams, vital signs measurement, blood draws for PPIX concentration, reporting of EPP/XLP-related symptoms (including completion of a daily diary), light dosimetry.
Studieoversigt
Status
Status
Betingelser
Betingelser
Undersøgelsestype
Undersøgelsestype
Tilmelding (Anslået)
Tilmelding
Kontakter og lokationer
Studiekontakt
Studiekontakt
- Navn: GondolaBio Inquiries
- Telefonnummer: 2178 650-249-2108
- E-mail: patientadvocacy@gondolabio.com
Studiesteder
-
-
-
Leuven, Belgien
- Ikke rekrutterer endnu
- UZ Leuven
-
Kontakt:
- Sarah Brike
- Telefonnummer: +32 16 34 62 32
- E-mail: sarah.brike@uzleuven.be
-
-
-
-
-
Edmonton, Canada
- Ikke rekrutterer endnu
- University of Alberta Hospital
-
Kontakt:
- Samridhi Dhand
- Telefonnummer: 873-688-8200
- E-mail: samridhi.dhand@primesiteresearch.com
-
-
-
-
-
Cardiff, Det Forenede Kongerige
- Rekruttering
- University Hospital of Wales
-
Kontakt:
- Mim Evans
- Telefonnummer: +44 02921 847061
- E-mail: mim.evans@wales.nhs.uk
-
Dundee, Det Forenede Kongerige
- Rekruttering
- Ninewells Hospital
-
Kontakt:
- Caroline Tee
- Telefonnummer: +44 (0)1382 660111
- E-mail: tascfeasibility.tayside@nhs.scot
-
London, Det Forenede Kongerige
- Rekruttering
- Guy's Hospital
-
Kontakt:
- Matthew Osmond
- Telefonnummer: +44 077 1769 7435
- E-mail: matthew.osmond2@nhs.net
-
Manchester, Det Forenede Kongerige
- Rekruttering
- Salford Royal Hospital
-
Kontakt:
- Jacqueline Howe
- Telefonnummer: +44 (0)161 206 8015
- E-mail: jacqueline.howe@manchester.ac.uk
-
-
-
-
Massachusetts
-
Boston, Massachusetts, Forenede Stater, 02114
- Rekruttering
- Massachusetts General Hospital
-
Kontakt:
- Narmene Bensaber
- Telefonnummer: 206-681-0218
- E-mail: nbensaber@mgh.harvard.edu
-
-
New York
-
New York, New York, Forenede Stater, 10029
- Rekruttering
- Mount Sinai School of Medicine
-
Kontakt:
- Silvia Gunderson
- Telefonnummer: 646-385-4611
- E-mail: silvia.gunderson@mssm.edu
-
-
North Carolina
-
Wake Forest, North Carolina, Forenede Stater, 27587
- Rekruttering
- Wake Forest University Baptist Health - Dept of Gastroenterology
-
Kontakt:
- Denise Faust
- Telefonnummer: 336.713.1442
- E-mail: denise.faust@advocatehealth.org
-
-
Pennsylvania
-
Philadelphia, Pennsylvania, Forenede Stater, 19121
- Ikke rekrutterer endnu
- Temple University
-
Kontakt:
- Penny Rothberg
- Telefonnummer: 215-214-1515
- E-mail: penny.rothberg@temple.edu
-
-
Texas
-
Houston, Texas, Forenede Stater, 77030
- Rekruttering
- University of Texas Health - Ertan Digestive Disease Center
-
Kontakt:
- Iram Abbasi
- Telefonnummer: 713-500-8908
- E-mail: Iram.S.Abbasi@uth.tmc.edu
-
-
-
-
-
Bordeaux, Frankrig
- Ikke rekrutterer endnu
- Centre Hospitalier Universitaire de Bordeaux - Hopital Saint - Andre
-
Kontakt:
- Jean Delaune
- Telefonnummer: +33 0557822433
- E-mail: Jean.delaune@chu-bordeaux.fr
-
Paris, Frankrig
- Ikke rekrutterer endnu
- AP-HP Hopital Bichat - Claude Bernard
-
Kontakt:
- Jonathan Lehacaut
- Telefonnummer: 01.40.25.71.48
- E-mail: jonathan.lehacaut@aphp.fr
-
-
-
-
-
Milan, Italien
- Ikke rekrutterer endnu
- Fondazione Irccs Ca' Granda Ospedale Maggiore Policlinico Di Milano
-
Kontakt:
- Elena Di Pierro
- Telefonnummer: +02 55033297
- E-mail: elena.dipierro@policlinico.mi.it
-
Modena, Italien
- Ikke rekrutterer endnu
- Azienda Ospedaliero-Universitaria di Modena
-
Kontakt:
- Chiara Boarini
- Telefonnummer: +39 (0) 594222722
- E-mail: cboarini@unimore.it
-
-
-
-
-
Bergen, Norge
- Ikke rekrutterer endnu
- Haukeland University Hospital
-
Kontakt:
- Janice Andersen
- Telefonnummer: +47 55973170
- E-mail: jacd@helse-bergen.no
-
-
-
-
-
Madrid, Spanien
- Rekruttering
- Hospital Universitario 12 de Octubre
-
Kontakt:
- Patricia Ortiz
- Telefonnummer: +34630742050
- E-mail: patricia.ortiz@ebers.es
-
Valencia, Spanien
- Ikke rekrutterer endnu
- Consorcio Hospital General Universitario de Valencia
-
Kontakt:
- Alexanda Boix Navarro
- Telefonnummer: +34 963131800
- E-mail: alexa_boix@hotmail.com
-
-
-
-
-
Ankara, Tyrkiet (Türkiye)
- Ikke rekrutterer endnu
- Gazi University Faculty of Medicine
-
Kontakt:
- Fatih Ezgu
- Telefonnummer: +90 312 202 6001
- E-mail: fatih.ezgu@gmail.com
-
-
Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
- Barn
- Voksen
- Ældre voksen
Tager imod sunde frivillige
Prøveudtagningsmetode
Studiebefolkning
Beskrivelse
Inclusion Criteria:
- Aged 12 years and older.
Confirmed diagnosis of EPP or XLP as follows:
- Genetic confirmation of EPP (FECH mutation with reduced ferrochelatase activity) OR
- Genetic confirmation of XLP (ALAS2 gain-of-function mutation) OR
- Elevated free PPIX levels in RBCs consistent with EPP/XLP, supported by clinical and/or family history.
- Currently has symptoms of EPP/XLP.
- History of consistent, non-painful prodrome within approximately 45 minutes of sunlight exposure and prior to phototoxic attacks, as self-reported by the participant.
- Willing and able to wear a light dosimetry device during the study.
- Willing and able to complete a daily diary of EPP/XLP symptoms.
- Willing and able to keep skin sites chosen for provocative sunlight exposure testing covered by opaque material when outside or exposed to potentially triggering light beginning 2 days prior to testing.
- Willing and able to provide informed consent and/or assent for the study.
- Study participants and LAR (as appropriate) are willing and able to comply with study visits and study procedures.
Exclusion Criteria:
- Diagnosis of another porphyria or another photodermatosis that may confound the characterization of EPP/XLP.
- Has a clinically significant disease or condition that, at the discretion of the Investigator or Sponsor, would interfere with the evaluation of EPP/XLP or study participation, or would make study participation not in the best interest of the participant.
- Is taking, or has taken within 60 days of Day 1, any medication, vitamin, or supplement that alters sensitivity to light exposure (eg, afamelanotide, melanotan, beta carotene, dersimelagon, or bitopertin).
- Concurrent or anticipated participation in an interventional clinical trial during the study period.
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Plasma Protoporphyrin IX (PPIX) Levels Over Time
Tidsramme: Screening; Baseline; Weeks 4, 8, 12, 16, 20, 24
|
Plasma protoporphyrin IX (PPIX) concentrations measured at specified study visits.
|
Screening; Baseline; Weeks 4, 8, 12, 16, 20, 24
|
|
Clinical History of Phototoxic Symptoms and Prodrome Timing
Tidsramme: Screening, Baseline, Weeks 4, 8, 12, 16, 20, 24
|
Medical history of EPP/XLP symptoms, including time to onset of prodromal sensations and occurrence of phototoxic reactions.
|
Screening, Baseline, Weeks 4, 8, 12, 16, 20, 24
|
|
Skin Damage Manifestations
Tidsramme: Screening, Baseline, Weeks 4, 8, 12, 16, 20, 24
|
Skin damage manifestations associated with EPP/XLP, including swelling, erythema, and chronic skin changes.
|
Screening, Baseline, Weeks 4, 8, 12, 16, 20, 24
|
|
Light Exposure and Phototoxic Reaction Data From Daily Diary
Tidsramme: Screening, Baseline, Weeks 4, 8, 12, 16, 20, 24
|
Daily recorded light exposure (including time spent outdoors), light dosimetry measurements, and occurrence of phototoxic reactions as captured in participant diaries.
|
Screening, Baseline, Weeks 4, 8, 12, 16, 20, 24
|
|
Sunlight Exposure Required to Induce Prodromal Symptoms
Tidsramme: Baseline and Weeks 4, 8, 12, 16, 20
|
Amount of sunlight exposure associated with onset of prodromal symptoms, along with corresponding plasma protoporphyrin IX (PPIX) levels.
|
Baseline and Weeks 4, 8, 12, 16, 20
|
Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Liver Function Test Results
Tidsramme: Baseline and Weeks 4, 8, 12, 16, 20, 24
|
Blood levels of liver function parameters (e.g., alanine aminotransferase [ALT], aspartate aminotransferase [AST], bilirubin) and corresponding plasma protoporphyrin IX (PPIX) levels.
|
Baseline and Weeks 4, 8, 12, 16, 20, 24
|
Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Datoer for undersøgelser
Studer store datoer
Studiestart (Anslået)
Studiestart
Primær færdiggørelse (Anslået)
Primær færdiggørelse
Studieafslutning (Anslået)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Faktiske)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
- Genetiske sygdomme, medfødte
- Metaboliske sygdomme
- Sygdomme i fordøjelsessystemet
- Leversygdomme
- Hudsygdomme
- Hudsygdomme, genetisk
- Porphyrias, lever
- Porfyrier
- Medfødte, arvelige og neonatale sygdomme og abnormiteter
- Ernæringsmæssige og metaboliske sygdomme
- Hud- og bindevævssygdomme
- Protoporfyri, erytropoietisk
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- PORT-77-001
Plan for individuelle deltagerdata (IPD)
Planlægger du at dele individuelle deltagerdata (IPD)?
IPD-planbeskrivelse
What may be shared:
De-identified individual participant data (no direct identifiers)
Who can access it:
Qualified researchers with a scientifically sound research proposal
Conditions for access:
Submission and approval of a research proposal Execution of a data sharing agreement (DSA) Compliance with privacy regulations (e.g., GDPR, HIPAA as applicable)
How it will be shared:
Through a secure data access process managed by the sponsor or designated data-sharing platform
Timing:
Typically after study completion and/or publication of primary results
Purpose:
To support further research on EPP and XLP while protecting participant confidentiality
Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter
Studerer et amerikansk FDA-reguleret lægemiddelprodukt
Studerer et amerikansk FDA-reguleret enhedsprodukt
Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .