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Myelodysplastic SyndromesPhase 2NCT03151304

A Safety and Efficacy Study of Pracinostat and Azacitidine in Patients With High Risk Myelodysplastic Syndromes

A Phase 2 study testing Pracinostat and Azacitidine in people with Myelodysplastic Syndromes, run by Helsinn Healthcare SA at 25 sites in United States.

Terminated

Stopped early. The study ended before it was planned to and will not resume.

Official record
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Trial summary

This is a Phase 2, two-stage study of the safety and efficacy of pracinostat in combination with azacitidine in patients with IPSS-R high and very high risk myelodysplastic syndrome (MDS) who are previously untreated with hypomethylating agents (HMAs). Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Myelodysplastic Syndromes
What is being tested?
Pracinostat and Azacitidine
Could I receive a placebo?
No, everyone receives an active treatment
How many people
64 participants
Where
25 sitesUnited States
Study dates
1 Jun 2017to 1 Dec 2020
Phase
Phase 2
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Female or male subjects ≥18 years-of-age.
  • Histologically or cytologically documented diagnosis of MDS according to the World Health Organization (WHO) classification (Vardiman 2009, Arber 2016) with >5% and <20% bone marrow blasts by morphology and a peripheral white blood cell (WBC) count of <20,000/μL
  • If WBC ≥20,000/μL, cytoreduction with hydroxyurea is permitted prior to enrollment.
  • chronic myelomonocytic leukemia CMML-1 and CMML-2 subtypes
  • Classified as high or very high risk according to the Revised International Prognostic Scoring System (IPSS-R) risk category. CMML-1 and CMML-2 subtypes will be considered high-risk MDS and will not require IPSS-r scoring
  • Bone marrow biopsy (BMBx) and/or aspirate within 28 days prior to first study treatment.
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  • Clinical indication for treatment with azacitidine.
  • Previously untreated with HMAs (prior therapy with transfusions, hematopoietic growth factors, or immunosuppressive therapy is allowed).
  • subjects who require the start of an HMA (e.g., azacitidine) due to progressing MDS may receive up to 1 cycle of azacitidine within 30 days prior to planned first dose (Cycle 1 Day 1)
  • Eastern Cooperative Oncology Group (ECOG) performance status of 0, 1, or 2.
  • Adequate organ function as evidenced by:
  • Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) ≤2.5 × the upper limit of normal (ULN).
  • Total bilirubin ≤1.5 × ULN or total bilirubin of ≤2 mg/dL, whichever is higher. Total bilirubin < 3 x ULN for patients with Gilbert-Meulengracht Syndrome
  • Serum creatinine <1.5 mg/dL, or creatinine clearance>40 mL/min.
  • QTcF interval ≤450 msec using the mean of triplicate electrocardiograms (ECGs).
  • Female subjects of childbearing potential and male subjects with female partners of childbearing potential are required to use two forms of acceptable contraception, including one barrier method, during their participation in the study and for 30 days following last dose. Female subjects of childbearing potential must not be breastfeeding, or planning to breastfeed, and must have a negative pregnancy test ≤7 days before first study drug administration.
  • Male subjects must also refrain from donating sperm during their participation in the study.
  • Voluntary written informed consent before performance of any study-related procedure not part of normal medical care.
  • Have the willingness and ability to understand the nature of this study and to comply with the study and follow-up procedures.

Who cannot join

  • Bone marrow blasts ≥20%, indicating a diagnosis of acute myeloid leukemia (AML).
  • Received any of the following within the specified time frame prior to administration of study medication:
  • Any investigational agent within 14 days or 5 half-lives prior to enrollment, whichever is longer.
  • Hydroxyurea within 48 hours prior to first day of study treatment.
  • Hematopoietic growth factors: erythropoietin, granulocyte colony stimulating factor (G-CSF), granulocyte macrophage colony stimulating factor (GM-CSF), or thrombopoietin receptor agonists at least 7 days (14 days for Aranesp), prior to study enrollment.
  • Major surgery within 28 days prior to first study treatment.
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  • Subjects who have not recovered from side effects of previous therapy.
  • Cardiopulmonary function criteria:
  • Current unstable arrhythmia requiring treatment.
  • History of symptomatic congestive heart failure (New York Heart Association [NYHA] Class III or IV).
  • History of myocardial infarction, pulmonary embolism or cerebrovascular accident within 6 months of enrollment.
  • Current unstable angina.
  • Prior treatment for MDS with histone deacetylase (HDAC) inhibitors Zolinza (vorinostat), Belenodaq (belinostat), Farydak (panobinostat), Istodax (romidepsin/depsipetide), or investigational agent with significant action as an HDAC inhibitor.
  • Clinical evidence of central nervous system involvement.
  • Subjects with gastrointestinal (GI) tract disease causing the inability to take oral medication, malabsorption syndrome, a requirement for intravenous (IV) alimentation, prior surgical procedures affecting absorption, uncontrolled inflammatory GI disease (e.g., Crohn's disease, ulcerative colitis).
  • Uncontrolled infection with human immunodeficiency virus (HIV) or chronic hepatitis B or C.
  • Life-threatening illness unrelated to cancer or any serious medical or psychiatric illness that could, in the Investigator's opinion, potentially interfere with participation in this study.
  • Presence of a malignant disease within the last 12 months, with the exception of adequately treated in-situ carcinomas, basal or squamous cell carcinoma, non-melanomatous skin cancer, or malignancies treated with curative intent and no evidence of active disease in prior 12 months and felt to be low risk for recurrence. Other malignancies may be considered after consultation with the Medical Monitor
  • An unwillingness or inability (including breastfeeding women, prohibited concomitant medications, uncontrolled infections, psychological, familial, sociological, or geographical conditions) to comply with study and/or follow-up procedures as outlined in the protocol
  • Known hypersensitivity to any components of pracinostat, azacitidine or mannitol
  • Current smoking or vaporizing of tobacco or cannabis-related products (use of patches, chewing tobacco, or nicotine gum is permitted). Subjects who stopped smoking at least 8 days prior to first pracinostat dosing can be, provided they refrain from smoking during the whole study.

Trial locations and contacts

25 sites in 1 country.

25 sites in 1 country

United States25 sites
  • New Mexico Cancer care Alliance

    Albuquerque, New Mexico, 87131

  • Georgia Cancer Center at Augusta University

    Augusta, Georgia, 30912

  • georgia cancer Center

    Augusta, Georgia, 30912

  • RCCA MD LLC (The Center for Cancer and Blood Disorders)

    Bethesda, Maryland, 20817

  • UVA Health System Division of Hematology & Oncology

    Charlottesville, Virginia, 22908

  • Oncology Hematology Care

    Cincinnati, Ohio, 45242

  • University Hospitals Cleveland Medical Center

    Cleveland, Ohio, 44106

  • Pontchartrain cancer Center

    Covington, Louisiana, 70433

  • UT Southwestern Medical Center

    Dallas, Texas, 75390

  • City of Hope

    Duarte, California, 91010

  • Duke University Medical Center

    Durham, North Carolina, 27710

  • Michigan Center of Medical Research

    Farmington Hills, Michigan, 48334

  • Southeastern Medical Oncology Center

    Goldsboro, North Carolina, 27534

  • Michigan State University, Breslin Cancer Center

    Lansing, Michigan, 48910

  • Cancer Centers of Southwest Oklahoma

    Lawton, Oklahoma, 73501

  • Universityof Wisconsin Clinical Science Center

    Madison, Wisconsin, 53792

  • Medical College of Wisconsin

    Milwaukee, Wisconsin, 53226

  • university of minnesota medical Center, Fairview

    Minneapolis, Minnesota, 55455

  • Providence Portland Medical center

    Portland, Oregon, 97213

  • University of Rochester Medical Center

    Rochester, New York, 14642

  • Scripps Cancer Center-Mercy

    San Diego, California, 92103

  • Swedish Cancer Institute

    Seattle, Washington, 98104

  • Mercy Medical Research Institute

    Springfield, Missouri, 65807

  • Stony Brook University

    Stony Brook, New York, 11794

  • Oklahoma Cancer Specialists and Research Institute

    Tulsa, Oklahoma, 74146

Other trials in United States

About this study

Official title: A Two-Stage, Open-Label Phase 2 Study of Pracinostat and Azacitidine in Patients With IPSS-R High and Very High Risk Myelodysplastic Syndromes Previously Untreated With Hypomethylating Agents

This is a Phase 2, two-stage study of the safety and efficacy of pracinostat in combination with azacitidine in patients with IPSS-R high and very high risk myelodysplastic syndrome (MDS) who are previously untreated with hypomethylating agents (HMAs). Enrollment in this study will be limited to high/very high risk MDS because this group represents the highest unmet need, with median survival of less than 18 months.

Stage 1a will be conducted as an open-label single arm in up to 40 subjects to assess if this regimen with a lower pracinostat dose results in a discontinuation rate that meets a predefined threshold and in efficacy that justifies expansion of enrollment into Stage 1b.

Read more

A discontinuation rate of approximately ≤10% in Stage 1a, a rate comparable to that observed with azacitidine alone in study MEI-003 (NCT01873703), supports expansion into Stage 1b.

Stage 1b will be conducted as expansion of stage 1a. Approximately 20 additional subjects will be enrolled. Study drugs should be continued until disease progression or intolerable toxicity. It is important to note that the median time to achieving a response with azacitidine alone is 4 to 5 months. Furthermore, the median time to achieving a Complete Response (CR) in study MEI-003 (NCT01873703) was 4 cycles. Therefore, early (<6 months) discontinuation of trial therapy for 'no response' should be avoided. The Medical Monitor should be contacted prior to discontinuing a subject from the study to discuss the rationale for discontinuation.

Being tested
Pracinostat, Azacitidine
Keywords
MDS
Medical subject headings
Myelodysplastic Syndromes

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • PracinostatDrug

    Also called SB939

    45 mg capsule

  • AzacitidineDrug

    SC or IV injection

Study groups in NCT03151304
Study groupRoleWhat they receive
Stage 1a and 1b open-label pracinostat plus azacitidineExperimentalopen-label single arm pracinostat plus azacitidine. Pracinostat: 45 mg administered orally 3 days each week for 3 consecutive weeks, followed by 1 week of rest, in 28-day cycles. In later cycles (i.e., after Cycle 4), pracinostat dose reduction to 45 mg orally 3 days each week × 2 weeks (instead of 3 weeks) or dose interruption is allowed to manage toxicity such as fatigue, gastrointestinal toxicity, or myelosuppression. Azacitidine: 75 mg/m2 for 7 days of each 28-day cycle. Administration will occur by subcutaneous (SC) injection, or IV infusion if SC injections are not tolerated, on one of two schedules: * Schedule 1 - daily therapy on Days 1 through 7 * Schedule 2 - 5-2-2 schedule in which subjects receive azacitidine for 5 consecutive days (Days 1 through 5) with rest on Days 6 and 7, and resume azacitidine dosing the first two days of the next week (Days 8 and 9) of each 28-day cycle
Receives: Drug: Pracinostat; Drug: Azacitidine

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Overall Response Rate (ORR)

    Percentage of subjects with confirmed complete remission (CR), partial remission (PR) and marrow CR, as per modified International Working Group (IWG) criteria:

    CR: Bone marrow: ≤5% myeloblasts with normal maturation of all cell lines; Peripheral blood Hemoglobin (Hb) ≥11 g/dL; Platelets ≥100 × 10^9/L; Neutrophils ≥1.0 × 10^9/L; Blasts 0%.

    PR: All CR criteria if abnormal before treatment except: Bone marrow blasts decreased by ≥ 50% over pre-treatment but still >5%; Cellularity and morphology not relevant Marrow CR: Bone marrow: ≤5% myeloblasts and decrease by ≥50% over pre-treatment

    Measured: 36 months

Secondary outcomes (12)
  1. Complete Response (CR) Rate

    Percentage of subjects with confirmed CR (i.e., 2 CRs at least 28 days apart) as per modified IWG criteria:

    CR: Bone marrow: ≤5% myeloblasts with normal maturation of all cell lines; Peripheral blood Hb ≥11 g/dL; Platelets ≥100 × 109/L; Neutrophils ≥1.0 × 109/L; Blasts 0%.

    Measured: 36 months

  2. Overall Hematologic Improvement (HI) Response Rate

    Percentage of subjects demonstrating major hematologic improvement according to modified IWG:

    Erythroid response (pre-treatment, <11 g/dL): Hb increase by ≥1.5 g/dL; Relevant reduction of units of RBC transfusions by an absolute number of at least 4 RBC transfusions/8 weeks compared with the pre-treatment transfusion number in the previous 8 weeks. Only RBC transfusions given for a Hb of ≤9.0 g/dL pre-treatment will count in the RBC transfusion response evaluation.

    Platelet response (pre-treatment, <100 × 10^9/L): Absolute increase of ≥30 × 10^9/L for patients starting with >20 × 10^9/L platelets; Increase from <20 × 10^9/L to >20 × 10^9/L and by at least 100%.

    Neutrophil response (pre-treatment, <1.0 × 10^9/L): At least 100% increase and an absolute increase >0.5 × 10^9/L.

    Progression or relapse after HI: at least 1 of the following:

    • At least 50% decrement from maximum response levels in granulocytes or platelets
    • Reduction in Hb by≥1.5 g/dL
    • Transfusion dependence

    Measured: 36 months

  3. Clinical Benefit Rate

    Percentage of subjects with confirmed CR, PR, Marrow CR, and HI with clinical benefit rate, defines as rate of CR + PR + HI + Marrow CR. All subjects who achieve hematologic CR, PR, marrow CR, or hematologic improvement on the erythrocytic lineage per modified IWG response criteria will be considered responders

    Measured: 36 months

  4. Rate of Cytogenetic CR

    Percentage of subjects with confirmed CR by cytogenetic assessment. Complete cytogenetic response is defined per modified IWG response criteria:

    Complete: Disappearance of the chromosomal abnormality without appearance of new ones Partial: At least 50% reduction of the chromosomal abnormality

    Measured: 36 months

  5. Duration of Response (DoR)

    For subjects who have achieved CR, PR, Marrow CR, or HI, DoR is defined as the time from the initial determination of response to the time of disease progression or death on study, whichever occurs first.

    Measured: 36 months

  6. Rate of Leukemic Transformation

    Percentage of subjects with leukemic transformation at landmark time point of 6 months

    Measured: 6 months

  7. Event-free Survival (EFS)

    time from the first day of study drug administration (Day 1) to failure or death from any cause

    Measured: 36 months

  8. Progression-free Survival (PFS)

    time from the first day of study drug administration (Day 1) to disease recurrence or progression as defined by the IWG criteria, or death on study:

    Disease progression for subjects with:

    Less than 5% blasts: ≥50% increase in blasts to >5% blasts 5%-10% blasts: ≥50% increase to >10% blasts 10%-20% blasts: ≥50% increase to >20% blasts 20%-30% blasts: ≥50% increase to >30% blasts

    Any of the following:

    At least 50% decrement from maximum remission/response in granulocytes or platelets Reduction in Hb by ≥2 g/dL Transfusion dependence

    Measured: 36 months

  9. Overall Survival (OS)

    time from the first day of study drug administration (Day 1) to death on study

    Measured: form day 1 to death on study, assessed up to 36 months

  10. Rate of Leukemic Transformation

    Percentage of subjects with leukemic transformation at landmark time point of 12 months

    Measured: 12 months

  11. Rate of Leukemic Transformation

    Percentage of subjects with leukemic transformation at landmark time point of 18 months

    Measured: 18 months

  12. Rate of Leukemic Transformation

    Percentage of subjects with leukemic transformation at landmark time point of 24 months

    Measured: 24 months

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted12 May 2017
  2. Study start1 Jun 2017
  3. Primary completion1 Dec 2020
  4. Study completion1 Dec 2020

Why it stopped: Sponsor's decision as at the completion of the primary analysis, the data were considered mature

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 2
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Model description
Two-Stage, Open-Label
Masking
None (open label)
Enrolment
64 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03151304
Sponsor's protocol ID
MEI-011
Status last verified
Feb 2022
First submitted
5 May 2017
Last updated
2 Mar 2022
FDA-regulated drug
Yes
FDA-regulated device
No

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Pracinostat and Azacitidine in people with Myelodysplastic Syndromes, run by Helsinn Healthcare SA at 25 sites in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 19 inclusion and 21 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: stopped early, as of the sponsor's last update on 2 Mar 2022. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 25 sites in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 2 Mar 2022). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Overall Response Rate (ORR) (time frame: 36 months). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 2 Mar 2022; AzTrials last refreshed its copy on 7 Nov 2026.

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