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En fase 2-studie av CPI-0610 med og uten ruxolitinib hos pasienter med myelofibrose

8. mai 2026 oppdatert av: Constellation Pharmaceuticals

En fase 1/2-studie av CPI-0610, en liten molekylhemmer av BET-proteiner: Fase 1 (doseeskalering av CPI-0610 hos pasienter med hematologiske maligniteter) og fase 2 (doseutvidelse av CPI-0610 med og uten ruxolitinib hos pasienter Med myelofibrose og essensiell trombocytopeni)

Fase 1 del (fullstendig): Åpen, sekvensiell doseøkningsstudie av pelabresib hos pasienter med tidligere behandlet akutt leukemi, myelodysplastisk syndrom, myelodysplastiske/myeloproliferative neoplasmer og myelofibrose.

Fase 2 Del: Åpen studie av CPI-0610 med og uten Ruxolitinib hos pasienter med myelofibrose.

CPI-0610 er en liten molekylhemmer av bromodomein og ekstraterminale (BET) proteiner.

Studieoversikt

Status

Fullført

Forhold

Intervensjon / Behandling

Studietype

Intervensjonell

Registrering (Faktiske)

336

Fase

  • Fase 2
  • Fase 1

Kontakter og plasseringer

Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.

Studiesteder

  • Belgia
      • Antwerp, Belgia, 2060
        • ZNA Stuyvenberg Antwerpen
    • Viaams Braban
      • Leuven, Viaams Braban, Belgia, 3000
        • UZ Leuven - Campus Gasthuisberg
    • West-Vlaanderen
      • Bruges, West-Vlaanderen, Belgia, 8000
        • AZ Sint-Jan Burgge-Oostende AV- Campus Sint-Jan
  • Canada
    • Alberta
      • Edmonton, Alberta, Canada, T6G 2G3
        • University of Alberta Hospital
    • British Columbia
      • Vancouver, British Columbia, Canada, V6Z 2A5
        • St. Paul's Hospital
    • Ontario
      • Hamilton, Ontario, Canada, L8V 5C2
        • Juravinski Cancer Centre
      • Toronto, Ontario, Canada, M5G 2M9
        • Princess Margaret Cancer Centre
    • Quebec
      • Montreal, Quebec, Canada, H3T 1E2
        • Jewish General Hospital
  • Forente stater
    • Arizona
      • Phoenix, Arizona, Forente stater, 85054
        • Mayo Clinic Arizona
    • California
      • Los Angeles, California, Forente stater, 90095
        • UCLA Medical Center
    • Florida
      • Jacksonville, Florida, Forente stater, 32224
        • Mayo Clinic Jacksonville
    • Illinois
      • Chicago, Illinois, Forente stater, 60611
        • Northwestern University - Lurie Comprehensive Cancer Center
    • Massachusetts
      • Boston, Massachusetts, Forente stater, 02114
        • Massachusetts General Hospital Cancer Center
    • Michigan
      • Ann Arbor, Michigan, Forente stater, 48109
        • University of Michigan Medical Center
    • Missouri
      • St Louis, Missouri, Forente stater, 63110
        • Washington University School of Medicne Neuromuscular Division Department of Neurology Research
    • New York
      • New York, New York, Forente stater, 10029
        • Icahn School of Medicine at Mount Sinai
      • New York, New York, Forente stater, 10021
        • Memorial Sloan Kettering Cancer Center
      • New York, New York, Forente stater, 10065
        • Weill Medical College and New York Presbyterian Hospital
    • Texas
      • Houston, Texas, Forente stater, 77030
        • The University of Texas MD Anderson Cancer Center
    • Wisconsin
      • Milwaukee, Wisconsin, Forente stater, 53226
        • Froedtert & Medical College of Wisconsin
  • Frankrike
      • Paris, Frankrike, 75010
        • CHU - Hopital Saint Louis - Centre D'Investigations Clinique
    • Gard
      • Nîmes, Gard, Frankrike, 30029
        • Institut de cancérologie du Gard - Hematologie clinique
    • Haute-Garonne
      • Toulouse, Haute-Garonne, Frankrike, 31059
        • CHRU de Lille - Hopital Claude Huriez
    • Hauts-de-France
      • Lille, Hauts-de-France, Frankrike, 59037
        • CHRU de Lille - Hôpital Claude Huriez - Maladies du Sang
    • Île-de-France Region
      • Villejuif, Île-de-France Region, Frankrike, 94805
        • Institut Gustave Roussy
  • Italia
      • Florence, Italia, 50134
        • Azienda Ospedaliero-Universitaria Careggi
      • Novara, Italia, 28100
        • AOU Maggiore della Carita
    • Emilia-Romagna
      • Bologna, Emilia-Romagna, Italia, 40138
        • Institue of Hematology "L. and A. Seràgnoli"
      • Rimini, Emilia-Romagna, Italia, 47923
        • Servizio Sanitario Regionale Emilia-Romagna - Azienda Unita Sanitaria Locale (AUSL) di Rimini - Ospedale Infermi di Rimini
    • Liguria
      • Genoa, Liguria, Italia, 16132
        • AOU S.Martino, IRCCS, IST-Istituto Nazionale Ricerca Sul Can
    • Lombardy
      • Milan, Lombardy, Italia, 20122
        • Ospedale Maggiore Policlinico, Fondazione IRCCS Ca' Granda
      • Pavia, Lombardy, Italia, 27100
        • Irccs Policlinico San Matteo, Universita Degli Studi Di Pavi
      • Varese, Lombardy, Italia, 21100
        • Ospedale di Circolo, PO Varese, AO Ospedale di Circolo e Fon
  • Nederland
    • Limburg
      • Maastricht, Limburg, Nederland, 6229 HX
        • Maastricht University Medical Center
    • North Holland
      • Amsterdam, North Holland, Nederland, 1081 HV
        • VUmcResearch B.V.
    • South Holland
      • Rotterdam, South Holland, Nederland, 3015 AA
        • Erasmus Universitair Medisch Centrum Rotterdam
  • Polen
    • Masovian Voivodeship
      • Warsaw, Masovian Voivodeship, Polen, 02-776
        • Instytut Hematologii I Transfuzjologii W Warszawie
    • Pomeranian Voivodeship
      • Gdansk, Pomeranian Voivodeship, Polen, 80-952
        • Uniwersyteckie Centrum Kliniczne
  • Storbritannia
      • Belfast, Storbritannia, BT9 7AB
        • Belfast City Hospital
      • Cambridge, Storbritannia, CB2 0QQ
        • University of Cambridge
      • Cardiff, Storbritannia, CF14 4XW
        • University Hospital of Wales
      • Glasgow, Storbritannia, G12 0YN
        • Beatson West of Scotland Cancer Centre
      • London, Storbritannia, NW1 2PG
        • University College London Hospital's NHS foundation Trust
      • London, Storbritannia, SE1 9RT
        • Guys and St Thomas' Hospital - Haematology
      • Manchester, Storbritannia, M20 4BX
        • The Christie Hospital
    • Oxford
      • Headington, Oxford, Storbritannia, OX3 7LE
        • Oxford University Hospitals
  • Tyskland
    • North Rhine-Westphalia
      • Bonn, North Rhine-Westphalia, Tyskland, 53127
        • Universitatsklinikum Bonn
    • Saxony
      • Leipzig, Saxony, Tyskland, 04103
        • Universitätsklinikum Leipzig AöR

Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

18 år og eldre (Voksen, Eldre voksen)

Tar imot friske frivillige

Nei

Beskrivelse

Inklusjonskriterier:

Fase 2 del: Pasienter med bekreftet diagnose av MF som oppfyller alle følgende kriterier:

  • ANC ≥ 1 x 10^9/L uten hjelp av granulocyttvekstfaktorer
  • Antall perifere blodsprengninger
  • ECOG-ytelsesstatus ≤ 2.
  • Tilstrekkelige hematologiske, nyre-, lever- og koagulasjonslaboratorievurderinger
  • Ingen tidligere behandling med BET-hemmer
  • Pasienter må gi skriftlig informert samtykke til å delta i denne studien før utførelse av en studierelatert prosedyre.

For arm 1 og 2 bør følgende kriterier vurderes:

  • Pasienter med bekreftet diagnose av MF som oppfyller alle følgende kriterier
  • Dynamic International Prognostic Scoring System (DIPSS) risikokategori på mellom-2 eller høyere
  • Miltvolum ≥ 450 cm^3 ved MR eller CT for kohorter 1B og 2B ELLER RBC-transfusjonsavhengig (definert som et gjennomsnitt på ≥2 enheter RBC-transfusjoner per måned (totalt mer enn 6 RBC-transfusjoner) i løpet av de 12 ukene før påmelding for kohorter 1A og 2A)
  • Minst 2 symptomer kan måles (score ≥ 1) ved bruk av Myelofibrosis Symptom Assessment Form versjon 4.0 (MFSAF v4.0)
  • Blodplateantall ≥ 75 x 10^9/L uten hjelp av trombopoietiske faktorer eller transfusjoner i minst 14 dager
  • Arm (arm 1): Tidligere behandlet med en JAK-hemmer og være intolerant, resistent, refraktær eller mistet respons på JAK-hemmeren; ikke har mottatt JAK-hemmeren innen 2 uker før oppstart av studiemedikamentet, eller er ikke kvalifisert for å bli behandlet med en JAK-hemmer
  • Kombinasjonsarm (arm 2): Må ha mottatt enkeltmiddel ruxolitinib og være på en stabil dose i minimum 8 uker, men ha sykdom som ikke er tilstrekkelig kontrollert av ruxolitinib

For arm 3 (JAK-hemmere naive) bør følgende kriterier vurderes:

  • Pasienter med bekreftet diagnose av MF som oppfyller alle følgende kriterier
  • Dynamic International Prognostic Scoring System (DIPSS) risikokategori på mellom-2 eller høyere
  • Blodplateantall ≥ 100 x 10^9/L uten hjelp av trombopoietiske faktorer eller transfusjoner
  • Miltvolum ≥ 450 cm^3 ved MR/CT
  • Minst 2 symptomer kan måles (score ≥ 3) eller en total poengsum på ≥ 10 ved bruk av Myelofibrosis Symptom Assessment Form versjon 4.0 (MFSAF v4.0)
  • Ingen tidligere behandling med JAKi tillatt

For arm 4 (ET-utvidelse) bør følgende kriterier vurderes:

  • Pasienter med bekreftet diagnose ET
  • Høyrisikosykdom, definert som oppfyller minst ett av følgende kriterier:
  • Alder > 60 år
  • Blodplateantall > 1500 × 10^9/L (på ethvert tidspunkt under pasientens sykdom)
  • Tidligere dokumentert trombose, erytromelalgi eller migrene
  • Tidligere blødning relatert til ET
  • Diabetes eller hypertensjon som krever farmakologisk behandling i > 6 måneder

  • Har ≥2 symptomer med en gjennomsnittlig poengsum ≥ 3 over 7-dagers perioden før syklus 1 dag 1 eller en gjennomsnittlig totalscore på ≥15 over 7-dagers perioden før syklus 1 dag 1 ved å bruke MPN SAF

    • Blodplater > 600 × 10^9/L
    • Resistent eller intolerant overfor HU

Ekskluderingskriterier:

  • Gjeldende kjent aktiv eller kronisk infeksjon med humant immunsviktvirus (HIV), hepatitt B eller hepatitt C.
  • Nedsatt hjertefunksjon eller klinisk signifikante hjertesykdommer
  • Pasienter med Child-Pugh klasse B eller C
  • Nedsatt gastrointestinal (GI) funksjon eller GI-sykdom som signifikant kan endre absorpsjonen av pelabresib og/eller ruxolitinib, inkludert eventuell uløst kvalme, oppkast eller diaré som er CTCAE-grad >1
  • Tidligere behandling med BET-hemmer.
  • Gravide eller ammende kvinner
  • Enhver annen samtidig alvorlig og/eller ukontrollert samtidig medisinsk tilstand som kan kompromittere deltakelse i studien
  • Pasienter som ikke vil eller er i stand til å overholde denne studieprotokollen.

Studieplan

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

  • Primært formål: Behandling
  • Tildeling: Ikke-randomisert
  • Intervensjonsmodell: Parallell tildeling
  • Masking: Ingen (Open Label)

Våpen og intervensjoner

Deltakergruppe / Arm
Intervensjon / Behandling
Eksperimentell: Phase 1
Patients were enrolled in sequential cohorts (acute leukemia, including acute myelogenous leukemia (AML), acute lymphocytic leukemia (ALL), and acute undifferentiated or biphenotypic leukemia; chronic myelogenous leukemia (CML) in blast crisis; myelodysplastic syndrome (MDS); myelodysplastic/myeloproliferative neoplasms (MDS/MPN); or myelofibrosis (MF)) and received escalating doses of pelabresib (CPI-0610).
Legemiddel: Pelabresib
CPI-0610 was administered orally once daily for 14 consecutive days, followed by a 7-day break (1 cycle = 21 days)
Andre navn:
  • CPI-0610
  • DAK539
Eksperimentell: Phase 2 (Arm 1): Prior JAKi Monotherapy Arm (MF patients treated with pelabresib alone)
  • Cohort 1A: Was open to patients with MF who were Transfusion Dependent (TD) and who had previously been treated with a JAKi and were intolerant, resistant, refractory, or had lost response to the JAKi, or were ineligible to be treated with a JAKi (pelabresib (CPI-0610) alone).
  • Cohort 1B: Was open to patients with MF who were not TD and who had previously been treated with a JAKi and were intolerant, resistant, refractory, or had lost response to the JAKi, or were ineligible to be treated with a JAKi (pelabresib (CPI-0610) alone).
Legemiddel: Pelabresib
CPI-0610 was administered orally once daily for 14 consecutive days, followed by a 7-day break (1 cycle = 21 days)
Andre navn:
  • CPI-0610
  • DAK539
Eksperimentell: Phase 2 (Arm 2): Prior JAKi Combination Arm
  • Cohort 2A: Was open to patients with MF who were Transfusion Dependent (TD) and were taking ruxolitinib but had disease that was not adequately controlled by ruxolitinib (pelabresib (CPI-0610) + Ruxolitinib).
  • Cohort 2B: Was open to patients with MF who were not TD and were taking ruxolitinib but had disease that was not adequately controlled by ruxolitinib (pelabresib (CPI-0610) + Ruxolitinib).
Legemiddel: Pelabresib
CPI-0610 was administered orally once daily for 14 consecutive days, followed by a 7-day break (1 cycle = 21 days)
Andre navn:
  • CPI-0610
  • DAK539
Legemiddel: Ruxolitinib
Ruxolitinib was given orally, twice daily (BID), on a continuous basis for 21 consecutive days of each 21-day cycle.
Eksperimentell: Phase 2 (Arm 3): JAKi Naïve Combination Arm
Was open to patients with MF who had not previously received a JAKi (pelabresib (CPI-0610) + Ruxolitinib).
Legemiddel: Pelabresib
CPI-0610 was administered orally once daily for 14 consecutive days, followed by a 7-day break (1 cycle = 21 days)
Andre navn:
  • CPI-0610
  • DAK539
Legemiddel: Ruxolitinib
Ruxolitinib was given orally, twice daily (BID), on a continuous basis for 21 consecutive days of each 21-day cycle.
Eksperimentell: Phase 2 (Arm 4): Essential Thrombocythemia (ET) Monotherapy Arm
Was open to high-risk patients with ET who were resistant or intolerant to hydroxyurea (HU) (pelabresib (CPI-0610) alone).
Legemiddel: Pelabresib
CPI-0610 was administered orally once daily for 14 consecutive days, followed by a 7-day break (1 cycle = 21 days)
Andre navn:
  • CPI-0610
  • DAK539

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Phase 1: Frequency of Dose-limiting Toxicities (DLTs)
Tidsramme: Up to 21 days
A dose-limiting toxicity (DLT) was defined as an adverse event or abnormal laboratory value assessed by the Investigator as unrelated to disease progression, intercurrent illness, or concomitant medications that occurred within the first cycle of treatment (21-day cycle) with pelabresib (CPI-0610), and that met any of the criteria specified in the protocol.
Up to 21 days
Phase 2 (Cohorts 1B, 2B, and Arm 3): Number of Participants With Splenic Response Rate (SVR35) at Week 24
Tidsramme: Week 24 (Cycle 9 Day 1)
Splenic Response Rate (SVR35) at Week 24 was defined as the proportion of participants who demonstrated a reduction of at least 35% in spleen size from baseline, as measured by imaging techniques (MRI or CT), following 24 weeks of treatment.
Week 24 (Cycle 9 Day 1)
Phase 2 (Cohorts 1A and 2A): Number of Participants Enrolled as Transfusion Dependent (TD) With Conversion Rate From Red Blood Cell (RBC) Transfusion Dependence (TD) to Transfusion Independence (TI)
Tidsramme: Any 12 consecutive weeks (rolling window) during active treatment with pelabresib (CPI-0610), from first dose through treatment discontinuation (up to approximately 8 years for Phase II)
Conversion rate was defined as the proportion of participants who converted from transfusion dependence (TD) to transfusion independence (TI). TD was characterized by receiving an average of at least 2 units of red blood cell (RBC) transfusions per month-amounting to a minimum of 6 units over the 12 weeks prior to enrollment-while TI was defined as the absence of RBC transfusions during any consecutive 12-week period.
Any 12 consecutive weeks (rolling window) during active treatment with pelabresib (CPI-0610), from first dose through treatment discontinuation (up to approximately 8 years for Phase II)
Phase 2 (Arm 4): Number of Participants With Complete Hematological Response (CHR) Rate
Tidsramme: Over 2 consecutive cycles (rolling window) (1 cycle = 21 days)
Complete Hematological Response (CHR) Rate was defined as the proportion of participants who fulfilled the criteria for CHR, based on the modified European LeukemiaNet (ELN) guidelines (Barosi et al 2009): platelet count ≤400 × 10⁹/L, white blood cell (WBC) count ≤10 × 10⁹/L, confirmation of laboratory values after one treatment cycle, and normal spleen size determined by palpation or imaging.
Over 2 consecutive cycles (rolling window) (1 cycle = 21 days)

Sekundære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Phase 1: Number of Adverse Events and Serious Adverse Events as Assessed by CTCAE Criteria
Tidsramme: Up to approximately 6 months
The distribution of adverse events was performed through the analysis of frequencies for treatment-emergent adverse events (TEAEs) and serious adverse events (TESAEs), based on the monitoring of relevant clinical and laboratory safety parameters. Treatment-emergent adverse events (TEAEs) in this study were defined as events that began after the first dose of study treatment and continued until 30 days after the last dose, or events that were present prior to the first dose and increased in severity based on preferred term within 30 days following the last dose of pelabresib (CPI-0610).
Up to approximately 6 months
Phase 2 (All Arms): Number of Adverse Events and Serious Adverse Events as Assessed by CTCAE Criteria
Tidsramme: Up to approximately 387 weeks
The distribution of adverse events was performed through the analysis of frequencies for treatment-emergent adverse events (TEAEs) and serious adverse events (TESAEs), based on the monitoring of relevant clinical and laboratory safety parameters. Treatment-emergent adverse events (TEAEs) in this study were defined as events that began after the first dose of study treatment and continued until 30 days after the last dose, or events that were present prior to the first dose and increased in severity based on preferred term within 30 days following the last dose of pelabresib (CPI-0610).
Up to approximately 387 weeks
Phase 2 (All Arms): Symptom Improvement From the Patient Global Impression of Change (PGIC) at 12 and 24 Weeks
Tidsramme: Week 12 (Cycle 5 Day 1), Week 24 weeks (Cycle 9 Day 1)
The Patient Global Impression of Change (PGIC) was a single-question, patient-reported assessment that asked individuals to rate their overall change in myeloproliferative neoplasm (MPN) symptoms since starting study treatment. The participants selected one of seven options, ranging from 'Very much improved' to 'Very much worse'. 'No Change from Baseline' indicated stable symptoms (no improvement or worsening), negative change from Baseline indicated a reduction in symptom severity (improvement), and positive change from Baseline indicated an increase in symptom severity (worsening).
Week 12 (Cycle 5 Day 1), Week 24 weeks (Cycle 9 Day 1)
Phase 2 (Arms 1, 2 and 3): Percent Change From Baseline in Total Symptom Score (TSS) From the Myelofibrosis Symptom Assessment Form (MFSAF v4.0) at 12 and 24 Weeks
Tidsramme: Baseline, Week 12 (Cycle 5 Day 1), Week 24 (Cycle 9 Day 1)
The MFSAF (Myelofibrosis Symptom Assessment Form) was completed by participants every day for 7 days before Day 1 of each treatment cycle, including the 7 days before starting Cycle 1. It used a 24-hour recall format, asking participants to rate the worst severity of seven symptoms (fatigue, night sweats, pruritus, abdominal discomfort, pain under the ribs on the left side, early satiety, and bone pain) during the past 24 hours. Each symptom was rated on a scale from 0 (Absent) to 10 (Worst Imaginable). The Total Symptom Score (TSS) was the sum of 7 symptoms (range: 0-70). 'No Change from Baseline' indicated stable symptoms (no improvement or worsening), negative change from Baseline indicated a reduction in symptom severity (improvement), and positive change from Baseline indicated an increase in symptom severity (worsening).
Baseline, Week 12 (Cycle 5 Day 1), Week 24 (Cycle 9 Day 1)
Phase 2 (Arms 1, 2 and 3): Number of Participants Who Achieved a ≥ 50% Reduction in Total Symptom Score (TSS) at 12 and 24 Weeks
Tidsramme: Week 12 (Cycle 5 Day 1), Week 24 (Cycle 9 Day 1)
The proportion of study participants who experienced a reduction of at least 50% in their Total Symptom Score (TSS), as assessed using the Myelofibrosis Symptom Assessment Form (MFSAF v4.0), was evaluated at both 12 and 24 weeks relative to their baseline score.
Week 12 (Cycle 5 Day 1), Week 24 (Cycle 9 Day 1)
Phase 2 (Arms 1, 2 and 3): Number of Participants With Overall Splenic Response Rate (Overall SVR35)
Tidsramme: Through Phase II completion, an average of 6 years
Overall Splenic Response Rate (SVR35) was defined as the proportion of participants who achieved a reduction of at least 35% in spleen size from baseline, as measured by imaging (MRI or CT), at any point between Cycle 1 Day 1 and the End of Study Visit, whichever occurred first.
Through Phase II completion, an average of 6 years
Phase 2 (Arms 1, 2 and 3): Duration of Overall Splenic Response (Overall SVR35)
Tidsramme: From first onset of splenic response until loss of response, assessed up to approximately 6 years
Duration of Overall Splenic Response (overall SVR35) was defined as the time from the first occurrence of a at least 35% reduction in spleen volume from baseline until the earliest of the following: a reduction of less than 35% from baseline combined with an increase of more than 25% from the nadir in spleen volume (as measured by MRI or CT), or death. The nadir was defined as the lowest spleen volume recorded after baseline and up to the evaluation point at which the initial splenic response was achieved.
From first onset of splenic response until loss of response, assessed up to approximately 6 years
Phase 2 (Cohorts 1A and 2A): Number of Participants With Splenic Response Rate (SVR35) at 12 and 24 Weeks
Tidsramme: Week 12 (Cycle 5 Day 1), Week 24 weeks (Cycle 9 Day 1)
Splenic Response Rate (SVR35) at 12 and 24 weeks was defined as the proportion of participants who achieved a reduction of at least 35% in spleen size from baseline, as determined by imaging (MRI or CT), following 12 and 24 weeks of treatment, respectively.
Week 12 (Cycle 5 Day 1), Week 24 weeks (Cycle 9 Day 1)
Phase 2 (Cohorts 1A and 2A): Duration of Red Blood Cell (RBC) Transfusion Independence (TI) in Participants Who Enroll as Transfusion Dependent (TD)
Tidsramme: From first onset of TI to earliest onset of loss of TI, assessed up to approximately 6 years
Duration of Red Blood Cell (RBC) Transfusion Independence (TI) was defined as the longest continuous period during which participants, having achieved at least 12 weeks of transfusion independence, remained free from RBC transfusions.
From first onset of TI to earliest onset of loss of TI, assessed up to approximately 6 years
Phase 2 (Cohorts 1A and 2A): Early Anemic Response Rate in Participants Who Enroll as Transfusion Dependent (TD)
Tidsramme: Through Phase II completion, an average of 6 years
Early anemic response rate was defined as the proportion of participants who achieved an average increase of at least 1 g/dL in hemoglobin concentration over any rolling 8-week (56-day) period following baseline. This calculation was performed after applying the 14/3 day rule, which stipulates that hemoglobin measurements must be spaced at least 14 days apart, and that at least 3 such measurements are required within the 8-week window to ensure a reliable average. Importantly, this increase had to occur without any red blood cell (RBC) transfusions during the treatment period and up to the time of the latest hemoglobin assessment for each patient.
Through Phase II completion, an average of 6 years
Phase 2 (Cohorts 1B, 2B, and Arm 3): Number of Participants With Splenic Response Rate (SVR35) at 12 Weeks
Tidsramme: Week 12 (Cycle 5 Day 1)
Splenic Response Rate (SVR35) at Week 12 was defined as the proportion of participants who achieved a reduction of at least 35% in spleen size from baseline, as measured by imaging (MRI or CT), following 12 weeks of treatment.
Week 12 (Cycle 5 Day 1)
Phase 2 (Cohorts 1B, 2B, and Arm 3): Anemic Response Rate in Participants Who Enroll as Non-transfusion-dependent (Non-TD)
Tidsramme: Through Phase II completion, an average of 6 years
Anemic response was defined as a sustained average increase in hemoglobin concentration of at least 1.5 g/dL over any rolling 12-week (84-day) period following baseline. This calculation excluded periods involving red blood cell (RBC) transfusions and was performed after applying the 14/3-day rule for valid hemoglobin assessments. The response had to be maintained through to the most recent available hemoglobin measurement for each patient.
Through Phase II completion, an average of 6 years
Phase 2 (Arm 4): Percentage of Participants Who Achieve a ≥50% Reduction From Baseline in the Myeloproliferative Neoplasm Symptom Assessment Form (MPN-SAF) Total Score
Tidsramme: Baseline, 12 weeks (Cycle 5, Day 1), 24 weeks (Cycle 9, Day 1)
The Myeloproliferative Neoplasm Symptom Assessment Form (MPN-SAF) is a patient-reported questionnaire designed to measure symptom burden in participants with myeloproliferative neoplasms (MPNs). Participants rate the severity of several symptoms (such as fatigue, night sweats, itching, abdominal discomfort, bone pain, early satiety, and others) over the past 24 hours. Each symptom is scored on a scale from 0 (absent/as good as it can be) to 10 (worst imaginable/as bad as it can be). The total score is the sum of all individual symptom scores, providing an overall measure of symptom burden. A 50% reduction in the MPN-SAF total score at 12 or 24 weeks means the patient's overall symptom burden has improved by half compared to their baseline (pre-treatment) score.
Baseline, 12 weeks (Cycle 5, Day 1), 24 weeks (Cycle 9, Day 1)
Phase 2 (Arm 4): Partial Hematological Response Rate (PHR)
Tidsramme: Over 2 consecutive cycles (rolling window) (1 cycle = 21 days)

Partial Hematological Response Rate (PHR) was defined as the proportion of participants who met the following criteria over two consecutive cycles up to the last administration of study treatment:

  • Platelet count > 400-600 x 10^9/L
  • WBC count within normal range (i.e., ≤ 10 x 10^9/L)
  • Laboratory results confirmed after 1 cycle (after 3weeks)
Over 2 consecutive cycles (rolling window) (1 cycle = 21 days)
Phase 2 (Arm 4): Overall Hematological Response Rate (OHR)
Tidsramme: Through Phase II completion, an average of 6 years
Confirmed Overall Hematological Response (OHR) Rate was defined as the proportion of participants with either a confirmed complete or a partial hematological response at any time.
Through Phase II completion, an average of 6 years
Phase 2 (Arm 4): Duration of Overall Hematological Response Rate (OHR)
Tidsramme: Through Phase II completion, an average of 6 years
Duration of Overall Hematological Response (OHR) Rate was defined as the time from when the overall hematological response was first met until the time at which the overall hematological response was lost, i.e., the criteria for an overall hematological response (CHR or PHR) were not observed or death occurred, whichever came first.
Through Phase II completion, an average of 6 years
Phase 2 (Arm 4): Rate of Hemorrhagic and Thromboembolic (TE) Events
Tidsramme: Through Phase II completion, an average of 6 years
Rate of hemorrhagic and thromboembolic (TE) events was defined as the proportion of participants with hemorrhagic or thromboembolic events throughout the study.
Through Phase II completion, an average of 6 years
Phase 2 (All Arms): Maximum Observed Plasma Concentration (Cmax) of Pelabresib
Tidsramme: Cycle 1 Day 14 (30 minutes, 1 hour, 2 hours, 4 hours, 6 hours, and 8 hours post-dose). 1 cycle = 21 days.

Pharmacokinetic (PK) parameters were calculated based on Pelabresib plasma concentrations and actual sampling time points.

Cmax was listed and summarized using descriptive statistics.
Cycle 1 Day 14 (30 minutes, 1 hour, 2 hours, 4 hours, 6 hours, and 8 hours post-dose). 1 cycle = 21 days.
Phase 2 (All Arms): Time to Reach Maximum Concentration (Tmax) of Pelabresib
Tidsramme: Cycle 1 Day 14 (predose, 30 minutes, 1 hour, 2 hours, 4 hours, 6 hours, and 8 hours post-dose). 1 cycle = 21 days.

Pharmacokinetic (PK) parameters were calculated based on Pelabresib plasma concentrations and actual sampling time points.

Tmax was listed and summarized using descriptive statistics.
Cycle 1 Day 14 (predose, 30 minutes, 1 hour, 2 hours, 4 hours, 6 hours, and 8 hours post-dose). 1 cycle = 21 days.
Phase 2 (All Arms): Predose (Trough) Concentration at the End of a Dosing Interval (Ctrough) of Pelabresib
Tidsramme: Cycle 1 Day 14 (predose, 30 minutes, 1 hour, 2 hours, 4 hours, 6 hours, and 8 hours post-dose). 1 cycle = 21 days.

Pharmacokinetic (PK) parameters were calculated based on Pelabresib plasma concentrations and actual sampling time points.

Ctrough was listed and summarized using descriptive statistics.
Cycle 1 Day 14 (predose, 30 minutes, 1 hour, 2 hours, 4 hours, 6 hours, and 8 hours post-dose). 1 cycle = 21 days.
Phase 2 (All Arms): Area Under the Concentration-Time Curve From Time Zero to the Last Observed Concentration (AUClast) of Pelabresib
Tidsramme: Cycle 1 Day 14 (30 minutes, 1 hour, 2 hours, 4 hours, 6 hours, and 8 hours post-dose). 1 cycle = 21 days.

Pharmacokinetic (PK) parameters were calculated based on Pelabresib plasma concentrations and actual sampling time points.

AUClast was listed and summarized using descriptive statistics.
Cycle 1 Day 14 (30 minutes, 1 hour, 2 hours, 4 hours, 6 hours, and 8 hours post-dose). 1 cycle = 21 days.
Phase 2 (All Arms): Area Under the Concentration-Time Curve From Time Zero to 8 Hours Post-dose at Steady State (AUC0-8,ss) of Pelabresib
Tidsramme: Cycle 1 Day 14 (30 minutes, 1 hour, 2 hours, 4 hours, 6 hours, and 8 hours post-dose). 1 cycle = 21 days.

Pharmacokinetic (PK) parameters were calculated based on Pelabresib plasma concentrations and actual sampling time points.

AUC0-8,ss was listed and summarized using descriptive statistics.
Cycle 1 Day 14 (30 minutes, 1 hour, 2 hours, 4 hours, 6 hours, and 8 hours post-dose). 1 cycle = 21 days.
Phase 2 (All Arms): Time of Last Measurable Concentration (Tlast) of Pelabresib
Tidsramme: Cycle 1 Day 14 (30 minutes, 1 hour, 2 hours, 4 hours, 6 hours, and 8 hours post-dose). 1 cycle = 21 days.

Pharmacokinetic (PK) parameters were calculated based on Pelabresib plasma concentrations and actual sampling time points.

Tlast was listed and summarized using descriptive statistics.
Cycle 1 Day 14 (30 minutes, 1 hour, 2 hours, 4 hours, 6 hours, and 8 hours post-dose). 1 cycle = 21 days.
Phase 2 (Arm 2 - Cohort 2A): Maximum Observed Plasma Concentration (Cmax) of Ruxolitinib
Tidsramme: Cycle 1 Day 14 (30 minutes, 1 hour, 2 hours, 4 hours, 6 hours, and 8 hours post-dose). 1 cycle = 21 days.

Pharmacokinetic (PK) parameters were calculated based on ruxolitinib plasma concentrations and actual sampling time points.

Cmax was listed and summarized using descriptive statistics.
Cycle 1 Day 14 (30 minutes, 1 hour, 2 hours, 4 hours, 6 hours, and 8 hours post-dose). 1 cycle = 21 days.
Phase 2 (Arm 2 - Cohort 2A): Time to Reach Maximum Concentration (Tmax) of Ruxolitinib
Tidsramme: Cycle 1 Day 14 (30 minutes, 1 hour, 2 hours, 4 hours, 6 hours, and 8 hours post-dose). 1 cycle = 21 days.

Pharmacokinetic (PK) parameters were calculated based on ruxolitinib plasma concentrations and actual sampling time points.

Tmax was listed and summarized using descriptive statistics.
Cycle 1 Day 14 (30 minutes, 1 hour, 2 hours, 4 hours, 6 hours, and 8 hours post-dose). 1 cycle = 21 days.
Phase 2 (Arm 2 - Cohort 2A): Predose (Trough) Concentration at the End of a Dosing Interval (Ctrough) of Ruxolitinib
Tidsramme: Cycle 1 Day 14 (predose, 30 minutes, 1 hour, 2 hours, 4 hours, 6 hours, and 8 hours post-dose). 1 cycle = 21 days.

Pharmacokinetic (PK) parameters were calculated based on ruxolitinib plasma concentrations and actual sampling time points.

Ctrough was listed and summarized using descriptive statistics.
Cycle 1 Day 14 (predose, 30 minutes, 1 hour, 2 hours, 4 hours, 6 hours, and 8 hours post-dose). 1 cycle = 21 days.
Phase 2 (Arm 2 - Cohort 2A): Area Under the Concentration-Time Curve From Time Zero to the Last Observed Concentration (AUClast) of Ruxolitinib
Tidsramme: Cycle 1 Day 14 (30 minutes, 1 hour, 2 hours, 4 hours, 6 hours, and 8 hours post-dose). 1 cycle = 21 days.

Pharmacokinetic (PK) parameters were calculated based on ruxolitinib plasma concentrations and actual sampling time points.

AUClast was listed and summarized using descriptive statistics.
Cycle 1 Day 14 (30 minutes, 1 hour, 2 hours, 4 hours, 6 hours, and 8 hours post-dose). 1 cycle = 21 days.
Phase 2 (Arm 2 - Cohort 2A): Area Under the Concentration-Time Curve From Time Zero to 8 Hours Post-dose at Steady State (AUC0-8,ss) of Ruxolitinib
Tidsramme: Cycle 1 Day 14 (30 minutes, 1 hour, 2 hours, 4 hours, 6 hours, and 8 hours post-dose). 1 cycle = 21 days.

Pharmacokinetic (PK) parameters were calculated based on ruxolitinib plasma concentrations and actual sampling time points.

AUC0-8,ss was listed and summarized using descriptive statistics.
Cycle 1 Day 14 (30 minutes, 1 hour, 2 hours, 4 hours, 6 hours, and 8 hours post-dose). 1 cycle = 21 days.
Phase 2 (Arm 2 - Cohort 2B): Maximum Observed Plasma Concentration (Cmax) of Ruxolitinib
Tidsramme: Cycle 1 Day 14 (30 minutes, 1 hour, 2 hours, 4 hours, 6 hours, and 8 hours post-dose). 1 cycle = 21 days.

Pharmacokinetic (PK) parameters were calculated based on ruxolitinib plasma concentrations and actual sampling time points.

Cmax was listed and summarized using descriptive statistics.
Cycle 1 Day 14 (30 minutes, 1 hour, 2 hours, 4 hours, 6 hours, and 8 hours post-dose). 1 cycle = 21 days.
Phase 2 (Arm 2 - Cohort 2B): Time to Reach Maximum Concentration (Tmax) of Ruxolitinib
Tidsramme: Cycle 1 Day 14 (30 minutes, 1 hour, 2 hours, 4 hours, 6 hours, and 8 hours post-dose). 1 cycle = 21 days.

Pharmacokinetic (PK) parameters were calculated based on ruxolitinib plasma concentrations and actual sampling time points.

Tmax was listed and summarized using descriptive statistics.
Cycle 1 Day 14 (30 minutes, 1 hour, 2 hours, 4 hours, 6 hours, and 8 hours post-dose). 1 cycle = 21 days.
Phase 2 (Arm 2 - Cohort 2B): Predose (Trough) Concentration at the End of a Dosing Interval (Ctrough) of Ruxolitinib
Tidsramme: Cycle 1 Day 14 (30 minutes, 1 hour, 2 hours, 4 hours, 6 hours, and 8 hours post-dose). 1 cycle = 21 days.

Pharmacokinetic (PK) parameters were calculated based on ruxolitinib plasma concentrations and actual sampling time points.

Ctrough was listed and summarized using descriptive statistics.
Cycle 1 Day 14 (30 minutes, 1 hour, 2 hours, 4 hours, 6 hours, and 8 hours post-dose). 1 cycle = 21 days.
Phase 2 (Arm 2 - Cohort 2B): Area Under the Concentration-Time Curve From Time Zero to the Last Observed Concentration (AUClast) of Ruxolitinib
Tidsramme: Cycle 1 Day 14 (30 minutes, 1 hour, 2 hours, 4 hours, 6 hours, and 8 hours post-dose). 1 cycle = 21 days.

Pharmacokinetic (PK) parameters were calculated based on ruxolitinib plasma concentrations and actual sampling time points.

AUClast was listed and summarized using descriptive statistics.
Cycle 1 Day 14 (30 minutes, 1 hour, 2 hours, 4 hours, 6 hours, and 8 hours post-dose). 1 cycle = 21 days.
Phase 2 (Arm 2 - Cohort 2B): Area Under the Concentration-Time Curve From Time Zero to 8 Hours Post-dose at Steady State (AUC0-8,ss) of Ruxolitinib
Tidsramme: Cycle 1 Day 14 (30 minutes, 1 hour, 2 hours, 4 hours, 6 hours, and 8 hours post-dose). 1 cycle = 21 days.

Pharmacokinetic (PK) parameters were calculated based on ruxolitinib plasma concentrations and actual sampling time points.

AUC0-8,ss was listed and summarized using descriptive statistics.
Cycle 1 Day 14 (30 minutes, 1 hour, 2 hours, 4 hours, 6 hours, and 8 hours post-dose). 1 cycle = 21 days.
Phase 2 (Arm 3): Maximum Observed Plasma Concentration (Cmax) of Ruxolitinib
Tidsramme: Cycle 1 Day 14 (30 minutes, 1 hour, 2 hours, 4 hours, 6 hours, and 8 hours post-dose). 1 cycle = 21 days.

Pharmacokinetic (PK) parameters were calculated based on ruxolitinib plasma concentrations and actual sampling time points.

Cmax was listed and summarized using descriptive statistics.
Cycle 1 Day 14 (30 minutes, 1 hour, 2 hours, 4 hours, 6 hours, and 8 hours post-dose). 1 cycle = 21 days.
Phase 2 (Arm 3): Time to Reach Maximum Concentration (Tmax) of Ruxolitinib
Tidsramme: Cycle 1 Day 14 (30 minutes, 1 hour, 2 hours, 4 hours, 6 hours, and 8 hours post-dose). 1 cycle = 21 days.

Pharmacokinetic (PK) parameters were calculated based on ruxolitinib plasma concentrations and actual sampling time points.

Tmax was listed and summarized using descriptive statistics.
Cycle 1 Day 14 (30 minutes, 1 hour, 2 hours, 4 hours, 6 hours, and 8 hours post-dose). 1 cycle = 21 days.
Phase 2 (Arm 3): Predose (Trough) Concentration at the End of a Dosing Interval (Ctrough) of Ruxolitinib
Tidsramme: Cycle 1 Day 14 (predose, 30 minutes, 1 hour, 2 hours, 4 hours, 6 hours, and 8 hours post-dose). 1 cycle = 21 days.

Pharmacokinetic (PK) parameters were calculated based on ruxolitinib plasma concentrations and actual sampling time points.

Ctrough was listed and summarized using descriptive statistics.
Cycle 1 Day 14 (predose, 30 minutes, 1 hour, 2 hours, 4 hours, 6 hours, and 8 hours post-dose). 1 cycle = 21 days.
Phase 2 (Arm 3): Area Under the Concentration-Time Curve From Time Zero to the Last Observed Concentration (AUClast) of Ruxolitinib
Tidsramme: Cycle 1 Day 14 (30 minutes, 1 hour, 2 hours, 4 hours, 6 hours, and 8 hours post-dose). 1 cycle = 21 days.

Pharmacokinetic (PK) parameters were calculated based on ruxolitinib plasma concentrations and actual sampling time points.

AUClast was listed and summarized using descriptive statistics.
Cycle 1 Day 14 (30 minutes, 1 hour, 2 hours, 4 hours, 6 hours, and 8 hours post-dose). 1 cycle = 21 days.
Phase 2 (Arm 3): Area Under the Concentration-Time Curve From Time Zero to 8 Hours Post-dose at Steady State (AUC0-8,ss) of Ruxolitinib
Tidsramme: Cycle 1 Day 14 (30 minutes, 1 hour, 2 hours, 4 hours, 6 hours, and 8 hours post-dose). 1 cycle = 21 days.

Pharmacokinetic (PK) parameters were calculated based on ruxolitinib plasma concentrations and actual sampling time points.

AUC0-8,ss was listed and summarized using descriptive statistics.
Cycle 1 Day 14 (30 minutes, 1 hour, 2 hours, 4 hours, 6 hours, and 8 hours post-dose). 1 cycle = 21 days.

Andre resultatmål

Resultatmål
Tidsramme
Fase 2 (arm 1, 2 og 3): Evaluer responskategorifrekvens
Tidsramme: Responsrate fra International Working Group – Myeloproliferative Neoplasms Research and Treatment (IWG-MRT) kriterier etter 24 uker
Responsrate fra International Working Group – Myeloproliferative Neoplasms Research and Treatment (IWG-MRT) kriterier etter 24 uker
Fase 2 (arm 1, 2 og 3): Evaluer hastigheten på RBC-transfusjon og RBC-transfusjonsavhengigheten
Tidsramme: Gjennomsnittlig antall RBC-enheter per emnemåned, opptil 24 uker og utover
Gjennomsnittlig antall RBC-enheter per emnemåned, opptil 24 uker og utover

Samarbeidspartnere og etterforskere

Det er her du vil finne personer og organisasjoner som er involvert i denne studien.

Sponsor

Constellation Pharmaceuticals

Samarbeidspartnere

The Leukemia and Lymphoma Society

Etterforskere

  • Studieleder: Novartis Pharmaceuticals, Novartis Pharmaceuticals

Publikasjoner og nyttige lenker

Den som er ansvarlig for å legge inn informasjon om studien leverer frivillig disse publikasjonene. Disse kan handle om alt relatert til studiet.

Generelle publikasjoner

Studierekorddatoer

Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.

Studer hoveddatoer

Studiestart (Faktiske)

16. juli 2014

Primær fullføring (Faktiske)

9. januar 2025

Studiet fullført (Faktiske)

9. januar 2025

Datoer for studieregistrering

Først innsendt

5. juni 2014

Først innsendt som oppfylte QC-kriteriene

5. juni 2014

Først lagt ut (Antatt)

9. juni 2014

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)

4. juni 2026

Siste oppdatering sendt inn som oppfylte QC-kriteriene

8. mai 2026

Sist bekreftet

1. april 2026

Mer informasjon

Begreper knyttet til denne studien

Nøkkelord

Ytterligere relevante MeSH-vilkår

Andre studie-ID-numre

  • 0610-02
  • 2018-000579-34 (EudraCT-nummer)
  • CDAK539A12201 (Annen identifikator: Novartis)

Plan for individuelle deltakerdata (IPD)

Planlegger du å dele individuelle deltakerdata (IPD)?

JA

IPD-planbeskrivelse

Novartis er opptatt av å dele med kvalifiserte eksterne forskere, tilgang til data på pasientnivå og støtte kliniske dokumenter fra kvalifiserte studier. Disse forespørslene blir gjennomgått og godkjent av et uavhengig gjennomgangspanel på grunnlag av vitenskapelig fortjeneste. All data som er gitt er anonymisert for å respektere personvernet til pasienter som har deltatt i rettssaken i tråd med gjeldende lover og forskrifter.

Denne tilgjengelige prøvedata er i henhold til kriteriene og prosessen beskrevet på www.clinicalstudyDatarequest.com

Legemiddel- og utstyrsinformasjon, studiedokumenter

Studerer et amerikansk FDA-regulert medikamentprodukt

Ja

Studerer et amerikansk FDA-regulert enhetsprodukt

Nei

produkt produsert i og eksportert fra USA

Nei

Denne informasjonen ble hentet direkte fra nettstedet clinicaltrials.gov uten noen endringer. Hvis du har noen forespørsler om å endre, fjerne eller oppdatere studiedetaljene dine, vennligst kontakt register@clinicaltrials.gov. Så snart en endring er implementert på clinicaltrials.gov, vil denne også bli oppdatert automatisk på nettstedet vårt. .

Abonnere