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CYT387

Phase 1

Primary Myelofibrosis | Small molecule | Hematology |GSK plc|Last Updated: Feb 1, 2019

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
UNCONTROLLEDBiomarker
Total Trials1
Total Enrollment166
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT00935987Safety and Efficacy Study of CYT387 in Primary Myelofibrosis (PMF) or Post-polycythemia Vera (PV) or Post-essential Thrombocythemia (ET)PHASE1 COMPLETED 166Nov 1, 2009Apr 1, 2012Feb 1, 20196 United States, Australia +1
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Study Endpoints
Primary Endpoints
Safety and tolerability, dose-limiting toxicities (DLTs) and maximum tolerated dose (MTD) of orally-administered CYT387 in patients with PMF or post-ET/PV MF.
Ongoing throughout therapy up until 30 days after last dose of CYT387
Objective Response Rate (ORR), as measured by complete response (CR) rate, partial response (PR) rate and clinical improvement (CI) rate according to International Working Group for Myelofibrosis Research and Treatment (IWG-MRT) consensus criteria
Baseline to study completion

The Objective Response Rate (ORR), as measured by complete response (CR) rate, partial response (PR) rate and clinical improvement (CI) rate according to International Working Group for Myelofibrosis Research and Treatment (IWG-MRT) is to be measured at the end of every cycle of therapy.

Pharmacokinetics of CYT387 in patients with PMF or post-ET/PV MF
Baseline to end of Cycle 1

The pharmacokinetics (PK) of CYT387 in patients with PMF or post-ET/PV MF is to be assessed on Day 1 and Day 28 in Cycle 1 of therapy

Secondary Endpoints
Effect of CYT387 on bone marrow or peripheral blood cytogenetic findings in patients with PMF or post-ET/PV MF.
Baseline to study completion
Effect of CYT387 on peripheral blood granulocyte JAK2V617F allele burden in patients with PMF or post-ET/PV MF.
Baseline to study completion
Effect of CYT387 on peripheral blood endogenous myeloid colony formation in patients with PMF or post-ET/PV MF.
Baseline to study completion
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Study Design & Arms
AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
CYT387EXPERIMENTAL -
Interventions
NameTypeDescription
CYT387DRUGFor the Part 1 dose-escalation portion of the study, patients will be assigned to dose levels in successive cohorts starting with a dose in the first cohort of 100 mg/day. CYT387 will be orally self-administered as a single daily dose beginning on Day 1 of the study, and thereafter at approximately the same time each day of the 28-day cycle. It is recommended that all doses be preceded by a 2-hour fast from food and beverages, and be followed by a 1-hour post-dose fast from food and beverages. Twenty additional patients will be assigned to a 150 mg BID (twice daily) dosing schedule. CYT387 will be orally self-administered twice-daily with doses approximately 10-12 hours apart beginning on Day 1 of the study, and thereafter at approximately the same times each day of the 28-day cycle. For the Part 2 dose confirmation portion of the study, patients will be assigned to either 150 mg or 300 mg QD (once daily) dose groups.
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites6

Inclusion Criteria: * Diagnosis of PMF or post-polycythemia Vera (PV) or post-essential Thrombocythemia (ET) MF as per revised World Health Organization (WHO) criteria. * High-risk or Intermediate-2 risk MF (as defined by the International Prognostic Scoring System \[IPSS\]; Appendix 13.6); or inte...

Countries:United StatesAustraliaCanada
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