Open-Label Study to Evaluate the Safety and Efficacy of Avatrombopag and Remission Rates in Adults With ITP of ≤6 Months
A Multicenter, Open-Label Study to Evaluate the Safety and Efficacy of Avatrombopag and Remission Rates in Adults With Immune Thrombocytopenia (ITP) of ≤6 Months Duration
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Detaljeret beskrivelse
Undersøgelsestype
Undersøgelsestype
Fase
Fase
- Fase 3
Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Beskrivelse
Inclusion Criteria:
- Male or female subjects ≥18 years of age at Screening.
- Subject must be able to provide informed consent.
- Subject has a confirmed diagnosis of primary ITP according to the International Consensus Report on the Investigation and Management of Primary ITP within the previous 6 months prior to Visit 1 and has had a previous response to a first line treatment (corticosteroids, IVIg, or anti-D), in the opinion of the Investigator.
- Subject has at least one platelet count <30×10⁹/L at any time during the screening period or at the Baseline visit.
- Females of childbearing potential must have a negative pregnancy test at Screening and Baseline.
- Female subjects of childbearing potential who are sexually active and male subjects who are sexually active must agree to use effective methods of contraception.
- Subject is willing and able to comply with all aspects of the protocol.
Exclusion Criteria:
- Thrombocytopenia due to a known condition other than primary ITP (e.g., systemic lupus erythematosus, H. pylori infection, splenomegaly, chronic liver disease).
- Any history of arterial or venous thrombosis, including partial or complete thrombosis (history of superficial thrombophlebitis is not exclusionary).
- Subjects with known inherited thrombocytopenia (e.g., MYH-9 disorders).
- History of myelodysplastic syndrome (MDS) or other hematologic malignancies.
- Current history of significant cardiac arrhythmias or decompensated congestive heart failure.
- History of hepatitis B (HBV), hepatitis C (HCV), or human immunodeficiency virus (HIV).
- Previous use of eltrombopag, romiplostim, recombinant human TPO or other platelet-producing agents.
- Surgical resection of the spleen.
- Previous use of mycophenolate mofetil (MMF), rituximab (or other B-cell lymphocyte depleting agents), mercaptopurine (6-MP) or alkylating agents.
- Concurrent malignant disease, other than non-melanoma skin cancer or cervical cancer in-situ.
- Known allergy to avatrombopag or any of its excipients.
- Subject is unable to take oral medication or has a malabsorption syndrome or any other uncontrolled gastrointestinal condition.
- Enrollment in another clinical study with any investigational drug or device within 30 days of Day 1/Visit 2 (or 5 half-lives, whichever is longer); however, participation in observational studies is permitted.
- Any clinically relevant abnormality which makes the subject unsuitable for participation in the study, in the opinion of the Investigator.
- Considered unable or unwilling to comply with the study protocol requirements.
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Behandling
- Tildeling: N/A
- Interventionel model: Enkelt gruppeopgave
- Maskning: Ingen (Åben etiket)
Antal våben
Våben og indgreb
Deltagergruppe / ArmDeltagergruppe / Arm |
Intervention / BehandlingIntervention / Behandling |
|---|---|
|
Eksperimentel: 20 mg Avatrombopag daily
Avatrombopag
|
Avatrombopag administered at a frequency to maintain a target platelet count between ≥50 and ≤150×10⁹/L
Andre navne:
|
Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Cumulative Number of Weeks of Platelet Response
Tidsramme: 6 Months of Active Treatment
|
Cumulative number of weeks of platelet response in which the platelet count is ≥50×10⁹/L during 6 months of treatment in the absence of rescue therapy.
|
6 Months of Active Treatment
|
Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Durable Platelet Response
Tidsramme: 8 Weeks of Treatment
|
Durable platelet response as defined by the incidence of subjects who have at least 6 out of 8 weekly platelet counts ≥50×10⁹/L during the last 8 weeks of treatment.
|
8 Weeks of Treatment
|
|
Incidence of ITP remission
Tidsramme: 24 Consecutive Weeks
|
Incidence of ITP remission as defined by platelet count ≥50×10⁹/L for 24 consecutive weeks with no ITP treatments (concomitant or rescue).
|
24 Consecutive Weeks
|
|
Incidence of subjects achieving a platelet count response
Tidsramme: 6 Months of Active Treatment
|
Incidence of subjects achieving a platelet count response (≥50×10⁹/L) during the active treatment period of the study.
|
6 Months of Active Treatment
|
Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Datoer for undersøgelser
Studer store datoer
Studiestart (Forventet)
Studiestart
Primær færdiggørelse (Forventet)
Primær færdiggørelse
Studieafslutning (Forventet)
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
Nøgleord
Yderligere relevante MeSH-vilkår
- Patologiske processer
- Sygdomme i immunsystemet
- Autoimmune sygdomme
- Hæmatologiske sygdomme
- Blødning
- Hæmoragiske lidelser
- Blodkoagulationsforstyrrelser
- Hudmanifestationer
- Blodpladeforstyrrelser
- Trombotiske mikroangiopatier
- Purpura, trombocytopenisk
- Purpura
- Purpura, trombocytopenisk, idiopatisk
- Trombocytopeni
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- AVA-ITP-306
Plan for individuelle deltagerdata (IPD)
Planlægger du at dele individuelle deltagerdata (IPD)?
Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter
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