A Study to Evaluate the Efficacy and Safety of Vismodegib in Combination With Ruxolitinib for the Treatment of Intermediate- or High-Risk Myelofibrosis (MF)

A Phase IB/III, Randomized, Double-Blind, Placebo-Controlled Study to Evaluate the Efficacy and Safety of Vismodegib in Combination With Ruxolitinib Versus Placebo and Ruxolitinib in Patients With Intermediate- or High-Risk Myelofibrosis

This multicenter, randomized, double-blind, placebo-controlled study will evaluate the efficacy and safety of vismodegib plus (+) ruxolitinib versus placebo + ruxolitinib in participants with intermediate- or high-risk MF. The study will be divided into 2 components. The Phase Ib portion of the study consists of participants receiving open-label vismodegib (150 milligrams [mg] orally [PO] once daily [QD]) + ruxolitinib (PO twice daily [BID]). A safety assessment will be performed after the first 10 participants have been treated for 6 weeks. An analysis for efficacy and safety is planned in the first 10 participants at Week 24. There will be a hold on participant screening and enrollment during this assessment. Another 10 participants may be enrolled, thereafter, to further assess efficacy and safety (at Week 24) before the initiation of the Phase III randomization portion of the study. Similarly, there will be another hold on participant screening and enrollment during this assessment. The participants enrolled in the Phase Ib portion of the study will continue to receive vismodegib (150 mg PO QD) + ruxolitinib (PO BID) for up to 48 weeks, if clinical benefit is observed after 24 weeks. The Phase III randomized, double-blind portion of the study will enroll approximately 84 participants. Participants will be randomly assigned in a 1:1 ratio (double blind) to receive either vismodegib (150 mg PO QD) + ruxolitinib (PO BID) or placebo (PO QD) + ruxolitinib (PO BID) for up to 48 weeks.

Study Overview

• Status: Completed
• Conditions: Myelofibrosis
• Intervention / Treatment: Other: Placebo; Drug: Ruxolitinib; Drug: Vismodegib

• Study Type: Interventional
• Enrollment (Actual): 10
• Phase: Phase 1

Contacts and Locations

Study Locations

• Canada
  • Alberta
    • Calgary, Alberta, Canada, T2N 4N2
      • Tom Baker Cancer Centre-Calgary; Clinical Research Unit
  • Nova Scotia
    • Halifax, Nova Scotia, Canada, B3H 2Y9
      • Queen Elizabeth II Health Sciences Centre; Oncology
  • Quebec
    • Montreal, Quebec, Canada, H2L 4M1
      • Centre Hospitalier De L'Universite De Montreal, Hopital Notre-Dame
• Germany
  • Aachen, Germany, 52074
    • Uniklinik RWTH Aachen; Med. Klinik IV; Klinik für Hämatologie, Onkologie, Hämostaseologie und Stammz
  • Berlin, Germany, 13353
    • Campus Virchow-Klinikum Charité Centrum 14; Medizinische Klinik m.S. Hämatologie u. Onkologie
• Italy
  • Piemonte
    • Torino, Piemonte, Italy, 10126
      • A.O.U. Citta' Della Salute E Della Scienza-P.O. Molinette;S.C. Ematologia
  • Toscana
    • Firenze, Toscana, Italy, 50135
      • Az. Osp. Di Careggi; Divisione Di Ematologia
• United States
  • Florida
    • Fort Myers, Florida, United States, 33908
      • Florida Cancer Specialists-Broadway, Fort Myers
    • Saint Petersburg, Florida, United States, 33705
      • Florida Cancer Specialist, North Region
    • West Palm Beach, Florida, United States, 33401
      • Florida Cancer Specialists
  • Ohio
    • Cincinnati, Ohio, United States, 45242
      • Oncology Hematology Care Inc
  • Tennessee
    • Nashville, Tennessee, United States, 37203
      • Sarah Cannon Research Institute
  • Texas
    • Houston, Texas, United States, 77030
      • Uni of Texas - Md Anderson Cancer Center; Dept of Leukemia

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 16 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Pathologically confirmed diagnosis of primary MF, post-polycythemia vera MF, or post-essential thrombocythemia MF, according to the 2008 revised World Health Organization criteria
• Intermediate-1, intermediate-2, or high-risk according to the IWG-MRT Dynamic International Prognostic Scoring System
• Life expectancy >= 6 months
• Peripheral blood blast count of less than (<) 10%
• Palpable splenomegaly of greater than (>) 5 centimeters (cm) below the left costal margin
• Eastern Cooperative Oncology Group performance status of 0 to 2
• Adequate hepatic and renal function

Exclusion Criteria:

• Prior treatment with a Hedgehog or Janus kinase pathway inhibitor
• Treatment with strong cytochrome P450 3A4 inhibitors/inducers within 28 days prior to Day 1
• Prior therapy for the treatment of intermediate- or high-risk MF including chemotherapy, interferon, thalidomide, busulfan, lenalidomide, anagrelide, or androgens within 28 days prior to Day 1
• Prior splenectomy or splenic irradiation
• Inadequate bone marrow reserve
• Participants with any history of platelet counts of < 50,000/mccL or ANC of < 500/mL, except during treatment for myeloproliferative neoplasm or treatment with cytotoxic therapy for any other reason
• Planned allogeneic bone marrow transplant during the study

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Double

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Active Comparator: Placebo + Ruxolitinib; Participants will receive placebo (PO QD) in combination with ruxolitinib (dose will depend on the participant's baseline platelet count) for up to 48 weeks.	Other: Placebo; Placebo will be administered PO QD for up to 48 weeks.; Drug: Ruxolitinib; Ruxolitinib will be administered PO BID at a starting dose depending on the participants's baseline platelet count for up to 48 weeks.
Experimental: Vismodegib + Ruxolitinib; Participants will receive vismodegib (150 mg PO QD) in combination with ruxolitinib (dose will depend on the participant's baseline platelet count) for up to 48 weeks.	Drug: Ruxolitinib; Ruxolitinib will be administered PO BID at a starting dose depending on the participants's baseline platelet count for up to 48 weeks.; Drug: Vismodegib; Vismodegib will be administered at a dose of 150 mg PO QD for up to 48 weeks.; Other Names: Erivedge

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Percentage of Participants who Achieve a Greater Than or Equal to (>=) 35% Reduction in Spleen Volume from Baseline at Week 24	Determined by an Independent Review Committee (IRC) Using International Working Group-Myeloproliferative Neoplasms Research and Treatment (IWG-MRT) Revised Response Criteria	Week 24
Percentage of Participants with Complete Remission (CR) and Partial Remission (PR) at Week 24, as Determined by an IRC Using IWG-MRT Revised Response Criteria		Week 24

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Plasma Vismodegib Concentration at Steady State		Predose (0 hour) on Weeks 6, 12, 24, 36, and 48
Unbound Vismodegib Concentration at Steady State		Predose (0 hour) on Weeks 6, 12, 24, 36, and 48
Alpha 1-Acid Glycoprotein Concentration at Steady State		Predose (0 hour) on Weeks 6, 12, 24, 36, and 48
Percentage of Participants who Achieve a >= 35% Reduction in Spleen Volume from Baseline, as Determined by an IRC Using IWG-MRT Revised Response Criteria at Week 48		Baseline, Week 48
Percentage of Participants who Achieve a >= 35% Reduction in Spleen Volume from Baseline, as Determined by an Investigator at Weeks 24 and 48		Baseline, Weeks 24 and 48
Percentage of Participants with CR and PR, as Determined by an IRC Using IWG-MRT Revised Response Criteria at Week 48		Week 48
Percentage of Participants with CR and PR, as Determined by an Investigator at Weeks 24 and 48		Weeks 24 and 48
Percentage of Participants with Overall Response Rate (CR, PR, and Clinical Improvement) at Weeks 24 and 48, as Determined by an IRC Using IWG-MRT Revised Response Criteria		Weeks 24 and 48
Percentage of Participants with Overall Response Rate (CR, PR, and Clinical Improvement) at Weeks 24 and 48, as Determined by the Investigator Using IWG-MRT Revised Response Criteria		Weeks 24 and 48
Percentage of Participants who Achieve Anemia Response at Weeks 24 and 48, as Determined by the Investigator Using IWG-MRT Revised Response Criteria		Weeks 24 and 48
Percentage of Participants with Symptom Response (Participants who Achieve a >= 50% Reduction from Baseline in the Myeloproliferative Neoplasm Symptom Assessment Form [MPN-SAF] Total Symptom Score [TSS])		Baseline, Weeks 24 and 48
Duration of Response, as Determined by the Investigator and an IRC Using IWG-MRT Revised Response Criteria or Death from Any Cause During the Study		Baseline up to 28 days after the last dose of study drug (52 weeks)
Percentage of Participants with Improvement from Baseline in Bone Marrow Fibrosis at Weeks 24 and 48, as Determined by the Investigator Using the European Consensus Grading System		Baseline, Weeks 24 and 48
Percentage of Participants with Improvement from Baseline in Bone Marrow Fibrosis at Weeks 24 and 48, as Determined by Independent Pathology Review Using the European Consensus Grading System		Baseline, Weeks 24 and 48
Progression-Free Survival		Baseline up to the end of the study (up to 1 year after completing 48 weeks of treatment by the last participant)
Percentage of Participants who Achieve a >= 50% Reduction in Fatigue from Baseline to Weeks 24 and 48 as Measured by MPN-SAF TSS		Baseline, Weeks 24 and 48
Percentage of Participants who Achieve a >= 50% Reduction in Other Symptom and Impact Item Scores from Baseline to Weeks 24 and 48, as Measured by the MPN-SAF		Baseline, Weeks 24 and 48
Percentage of Participants who Achieve a Meaningful Improvement on the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire Core 30 Scale Scores from Baseline to Weeks 24 and 48	Meaningful improvement is defined as a 10-point change.	Baseline, Weeks 24 and 48
Overall Survival		Baseline up to the end of the study (up to 1 year after completing 48 weeks treatment by the last participant)
Percentage of Participants with Adverse Events (AEs)		Baseline up to Month 48

Collaborators and Investigators

• Sponsor: Hoffmann-La Roche

Publications and helpful links

General Publications

• Couban S, Benevolo G, Donnellan W, Cultrera J, Koschmieder S, Verstovsek S, Hooper G, Hertig C, Tandon M, Dimier N, Malhi V, Passamonti F. A phase Ib study to assess the efficacy and safety of vismodegib in combination with ruxolitinib in patients with intermediate- or high-risk myelofibrosis. J Hematol Oncol. 2018 Sep 24;11(1):122. doi: 10.1186/s13045-018-0661-x.

Study record dates

Study Major Dates

• Study Start (Actual): January 25, 2016
• Primary Completion (Actual): March 29, 2017
• Study Completion (Actual): July 12, 2017

Study Registration Dates

• First Submitted: October 29, 2015
• First Submitted That Met QC Criteria: October 29, 2015
• First Posted (Estimate): November 1, 2015

Study Record Updates

• Last Update Posted (Actual): May 11, 2018
• Last Update Submitted That Met QC Criteria: May 4, 2018
• Last Verified: May 1, 2018

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Bone Marrow Diseases; Hematologic Diseases; Myeloproliferative Disorders; Primary Myelofibrosis
• Other Study ID Numbers: WO29806; 2015-001620-33 (EudraCT Number)

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: Yes
• Studies a U.S. FDA-regulated device product: No