A Phase 3 Study to Compare Efficacy and Safety of Masitinib to Placebo in the Treatment of Patients With Smouldering Systemic, Indolent Systemic or Cutaneous Mastocytosis With Handicap

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00814073
Recruitment Status : Unknown
Verified September 2012 by AB Science.
Recruitment status was:  Recruiting
First Posted : December 23, 2008
Last Update Posted : September 26, 2012
Information provided by (Responsible Party):
AB Science

December 22, 2008
December 23, 2008
September 26, 2012
December 2008
December 2012   (Final data collection date for primary outcome measure)
Responder rate at week 24 [ Time Frame: 24 weeks ]
Same as current
Complete list of historical versions of study NCT00814073 on Archive Site
Response in mastocytosis variables (pruritus, flushes, depression or asthenia), mictions and stools per day, patient score and assessments, patients without handicap, mast cell infiltration , serum tryptase level, safety profile [ Time Frame: 24 weeks ]
Same as current
Not Provided
Not Provided
A Phase 3 Study to Compare Efficacy and Safety of Masitinib to Placebo in the Treatment of Patients With Smouldering Systemic, Indolent Systemic or Cutaneous Mastocytosis With Handicap
A 24-week With Possible Extension, Prospective, Multicentre, Randomized, Double Blind, Placebo-controlled, 2-parallel Group With a Randomization 1:1, Phase III Study to Compare Efficacy and Safety of Masitinib at 6 mg/kg/Day to Placebo in Treatment of Patients With Smouldering Systemic, Indolent Systemic or Cutaneous Mastocytosis With Handicap
The objective of this study is to compare the safety and efficacy of masitinib (AB1010) to placebo in patients with mastocytosis with handicap.

Mastocytosis is a disease characterized by mast cell invasion in various organs. Mast cells are bone marrow derived cells which produce histamine and other substances causing allergic and anaphylactic reactions. Accumulation of mast cells in body organs can inhibit the functionality of the organ and eventually cause degeneration.

Mutations of the mast cell growth factor receptor (KIT protein, the product of the c-Kit proto-oncogene) might be found in patients with mastocytosis.

Masitinib (AB1010) is a tyrosine kinase inhibitor (TKI), selectively and effectively inhibiting c-kit. Its effect may include inhibition of cell proliferation, inhibition of cell cycle progression and induction of apoptosis resulting in the reduction of mast cell accumulation in body tissues. This drug is thereby specific to mastocytosis and active in slowing or reducing the number of mast cells particularly in aggressive forms of the disease.

Phase 3
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
  • Smouldering Systemic Mastocytosis
  • Indolent Systemic Mastocytosis
  • Cutaneous Mastocytosis With Handicap
  • Mastocytosis
  • Drug: masitinib (AB1010)
    masitinib (AB1010) 6 mg/kg/day per os
    Other Name: AB1010
  • Drug: placebo
    matching placebo
  • Experimental: 1
    masitinib (AB1010) 6 mg/kg/day per os
    Intervention: Drug: masitinib (AB1010)
  • Placebo Comparator: 2
    Intervention: Drug: placebo
Lortholary O, Chandesris MO, Bulai Livideanu C, Paul C, Guillet G, Jassem E, Niedoszytko M, Barete S, Verstovsek S, Grattan C, Damaj G, Canioni D, Fraitag S, Lhermitte L, Georgin Lavialle S, Frenzel L, Afrin LB, Hanssens K, Agopian J, Gaillard R, Kinet JP, Auclair C, Mansfield C, Moussy A, Dubreuil P, Hermine O. Masitinib for treatment of severely symptomatic indolent systemic mastocytosis: a randomised, placebo-controlled, phase 3 study. Lancet. 2017 Feb 11;389(10069):612-620. doi: 10.1016/S0140-6736(16)31403-9. Epub 2017 Jan 7.

*   Includes publications given by the data provider as well as publications identified by Identifier (NCT Number) in Medline.
Unknown status
Same as current
June 2013
December 2012   (Final data collection date for primary outcome measure)

Inclusion Criteria:

  1. Patient with one of the following documented mastocytosis as per WHO classification: Smouldering Systemic Mastocytosis, Indolent Systemic Mastocytosis, Cutaneous Mastocytosis
  2. Patient with documented mastocytosis and evaluable disease based upon histological criteria: typical infiltrates of mast cells in a multifocal or diffuse pattern in skin and/or bone marrow biopsy
  3. Patient with documented treatment failure of his/her handicap(s) with at least one of the following therapy used at optimized dose: Anti H1, Anti H2, Proton pump inhibitor, Osteoclast inhibitor, Cromoglycate Sodium, Antileukotriene
  4. Handicapped status defined as at least two of the following handicaps, including at least one among pruritus, flushes, depression and asthenia: pruritus score ≥ 6, number of flushes per week ≥ 7, Hamilton rating scale (depression) ≥ 10, number of stools per day ≥ 4, number of mictions per day ≥ 8, Fatigue Impact Scale total score (asthenia) ≥ 40
  5. Patients with OPA > 2 (moderate to intolerable general handicap)
  6. Male or female patient with age ≥ 18 years

Exclusion Criteria:

  1. Patient with one of the following mastocytosis: Systemic Mastocytosis with an Associated clonal Hematologic Non Mast cell lineage Disease (SM-AHNMD), Mast cell leukemia (MCL), Aggressive systemic mastocytosis (ASM)
  2. Previous treatment with any Tyrosine Kinase Inhibitor
  3. Patient presenting with at least one of the following feature: ischemic heart disease, cardiac failure, conduction disorders or arrythmia
  4. Patient with any condition that the physician judges could be detrimental to subjects participating in this study; including any clinically important deviations from normal clinical laboratory values or concurrent medical events Previous treatment
  5. Change in the symptomatic treatment of mastocytosis or administration of any new treatment of mastocytosis within 4 weeks prior to baseline
  6. Treatment with any investigational agent within 4 weeks prior to baseline
Sexes Eligible for Study: All
18 Years and older   (Adult, Older Adult)
Contact information is only displayed when the study is recruiting subjects
France,   United States
Not Provided
Not Provided
AB Science
AB Science
Not Provided
Principal Investigator: Olivier Lortholary, MD, PhD Hôpital Necker, Paris, France
AB Science
September 2012

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP