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Ibrutinib in Treating Patients With Advanced Systemic Mastocytosis

Primary Purpose

Aggressive Systemic Mastocytosis, Mast Cell Leukemia, Systemic Mastocytosis

Status

Terminated

Phase

Phase 2

Locations

United States

Study Type

Interventional

Intervention

Ibrutinib

About this trial

This is an interventional treatment trial for Aggressive Systemic Mastocytosis

Eligibility Criteria

18 Years - undefined (Adult, Older Adult)All SexesDoes not accept healthy volunteers

INCLUSION CRITERIA

Diagnosis of systemic mastocytosis per 2008 World Health Organization (WHO) criteria. Those with advanced systemic mastocytosis (ASM); mast cell leukemia (MCL); or systemic mastocytosis-associated hematological clonal non-mast cell lineage disease (SM-AHNMD) required to have at least 1 organ damage finding
Serum aspartate transaminase (AST) or alanine transaminase (ALT) ≤ 3.0 x upper limit of normal (ULN); if considered related to ASM/MCL ≤ 5 x ULN
Estimated creatinine clearance ≥ 30 mL/min (Cockcroft-Gault)
Total bilirubin ≤ 1.5 x ULN (unless bilirubin rise is due to Gilbert's syndrome or of non-hepatic origin); if considered related to ASM/MCL ≤ 3 x ULN
Female subjects must be of non-reproductive potential, or if of childbearing potential must have a negative serum pregnancy test upon study entry
Must agree to use highly effective methods of birth control
Written informed consent
Eastern Cooperative Oncology Group (ECOG) performance status of 0 to 3
Life expectancy > 12 weeks

EXCLUSION CRITERIA

Received any investigational agent, chemotherapy, interferon-alpha, or 2-chlorodeoxyadenosine (2-CdA, cladribine) within 30 days prior to day 1; or monoclonal antibody ≤ 6 weeks prior to first administration of study treatment (patients with an AHNMD with progressive leukocytosis who require control of their counts are permitted to receive hydroxyurea)
Diagnosis of AHNMD requiring immediate cytoreductive therapy or targeted drugs (eg, acute myeloid leukemia [AML])
History of other malignancies, except:
- Malignancy treated with curative intent and with no known active disease present for ≥ 3 years before the first dose of study drug, and at low risk for recurrence
- Adequately treated non-melanoma skin cancer or lentigo maligna without evidence of disease
- Adequately treated carcinoma in situ without evidence of disease
Concurrent systemic immunosuppressant therapy (eg, cyclosporine A, tacrolimus, etc., or chronic administration [> 14 days] of > 10 mg/day of prednisone) within 28 days of the first dose of study drug
Vaccinated with live, attenuated vaccines within 4 weeks of first dose of study drug
Systemic treatment for infection completed ≤ 14 days before the first dose of study drug
Unresolved toxicities from prior anti-cancer therapy, defined as having not resolved to Common Terminology Criteria for Adverse Event (CTCAE, version 4), grade 0 or 1, or to the levels dictated in the inclusion/exclusion criteria with the exception of alopecia
Known bleeding disorders (eg, severe von Willebrand's disease) or severe hemophilia
History of stroke or intracranial hemorrhage within 6 months prior to enrollment
Known history of human immunodeficiency virus (HIV) or
Active infection with hepatitis C virus (HCV) or hepatitis B virus (HBV)
Major surgery within 4 weeks of first dose of study drug
Any life-threatening illness, medical condition, or organ system dysfunction that could compromise the subject's safety or put the study outcomes at undue risk
Currently active, clinically significant cardiovascular disease, such as uncontrolled arrhythmia or class 3 or 4 congestive heart failure as defined by the New York Heart Association Functional Classification; or a history of myocardial infarction, unstable angina, or acute coronary syndrome within 6 months prior to randomization
Unable to swallow capsules or malabsorption syndrome
Disease significantly affecting gastrointestinal function
Resection of the stomach or small bowel
Symptomatic inflammatory bowel disease
Ulcerative colitis
Partial or complete bowel obstruction
Requires treatment with a strong cytochrome P450 (CYP) 3A4/5 inhibitor
Lactating or pregnant
Unwilling or unable to participate in all required study evaluations and procedures
Unable to understand the purpose and risks of the study and to provide a signed and dated informed consent form (ICF) and authorization to use protected health information (in accordance with national and local subject privacy regulations)
Known hypersensitivity to any excipient contained in the drug
Received hematopoietic growth factor support within 14 days of day 1 of ibrutinib (Jehovah's witnesses may be given an erythropoiesis-stimulating agent before and during the trial in lieu of red blood cell transfusions but anemia and/or red blood cell (RBC) transfusion dependence cannot be used for response assessment in these patients)
Presence of the factor interacting with poly(A) polymerase alpha (PAPOLA) and cleavage and polyadenylation specific factor 1 (CPSF1) (FIP1L1)-platelet-derived growth factor receptor, alpha polypeptide (PDGFRalpha) fusion even with resistance to imatinib (such patients are no longer defined as systemic mastocytosis by the WHO)
Received any treatment with ibrutinib prior to study entry
The concomitant use of warfarin or other vitamin K antagonists unless felt to be of significant clinical need; low molecular weight heparin or other anticoagulants may be used instead if anticoagulation is required

Sites / Locations

Stanford University Hospitals and Clinics

Arms of the Study

Arm 1

Arm 2

Arm Type

Experimental

Arm Label

Ibrutinib 420 mg/day

Ibrutinib 560 mg/day

Arm Description

Participants receive ibrutinib daily on days 1 to 28, at 420 mg/day in 28-day cycles

Participants receive ibrutinib daily on days 1 to 28, at 560 mg/day in 28-day cycles

Outcomes

Primary Outcome Measures

Overall Response Rate (ORR)

Overall response rate (ORR) is reported as the sum of the rates of participants achieving complete remission (CR), partial remission (PR), & clinical improvement (CI). A clinical response is a response with duration of ≥ 12 weeks. CR is defined as all 4 criteria: No presence of compact neoplastic mast cell aggregates Serum tryptase level < 20 ng/mL Peripheral blood count remission defined as absolute neutrophil count (ANC) ≥1 x 10e9/L + normal differential, Hb ≥11 g/dL, & platelet count ≥100x10e9/L Complete resolution of palpable hepatosplenomegaly & all biopsy-proven or suspected SM-related organ damage PR is defined as all 3 criteria with response duration ≥12 weeks, that is not CR or progressive disease: ≥ 50% reduction in neoplastic mast cells Serum tryptase level reduced ≥50% Resolution of 1+ biopsy-proven or suspected systemic mastocytosis (SM)-related organ damage findings CI is defined as any improvement in any of the above measures.

Secondary Outcome Measures

Number of Participants With Adverse Events

Adverse events will be graded according to the National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) version 4.03, and reported as the number and percentage of participants having any adverse event; by each grade of adverse event; and by affected body systems.

Ibrutinib Pharmacokinetics (PK)

Plasma concentration-time profiles for each subject and mean plasma concentration-time profiles for each dose level will be plotted, plasma concentration data for ibrutinib at each time point will be summarized by descriptive statistics, and PK parameters such as maximum concentration (Cmax), minimum concentration, time at which the Cmax is reached, and area under the curve will be summarized with mean, geometric mean, medium, minimum, maximum, standard deviation, and coefficient of variation.

Change of Mast Cell Burden

The change in the number of neoplastic mast cells in tissues (blood and/or bone marrow), ie, a measure of mast cell burden, will be assessed by immunophenotyping and/or immunohistochemistry (depending on patient and disease specifics) using mast cell markers, eg, CD25, CD30, CD117, tryptase, reticulin, Wright-Giemsa staining, and/or hematoxylin-eosin staining, in peripheral blood smears or bone marrow samples. For each participant, the data are used to collectively determine a single assessment for the number of mast cells present at baseline and after treatment. The outcome is reported as the median change in that level of mast cells, with full range, from baseline up to 2 years.

Serum Tryptase Levels

Serum tryptase level is a surrogate marker for the desired histopathologic response, ie, reduction in mast cell burden. Serum tryptase levels are reported as the median of the percent reduction, with full range, from baseline up to 2 years.

Total Symptom Score (TSS)

The totality of systemic mastocytosis was assessed by the total symptom score as measured by a Myeloproliferative Neoplasm Symptom Assessment Form modified for mast cell disorders [MPN-SAF (MCD)], and reported as the change in median score with standard deviation at baseline and 30 days. The MPN-SAF is a single, 27-question questionnaire that scores the following general measures on a scale of 0 (best) to 10 (worst): fatigue levels, effects of fatigue, satiety, pain, activity, concentration, dizziness, sleep, mood, anxiety, sexual function, itching, flushing, fever, weight loss, respiratory functions, diarrhea, lesions, and allergic reactions (some of these general terms may describe more than 1 assessment). The score on the MPN-SAF is the sum total of all 27 scores, and the range of scores is from a minimum of 0 (best; symptoms for all assessment absent) to a maximum of 270 (worst; score of 10 on all assessments).

Change in Quality of Life (QoL)

The quality of life (QoL) component of the Myeloproliferative Neoplasm Symptom Assessment Form (MPNSAF) modified for mast cell symptoms, a scale of life quality ranking from 0 (best) to 10 (worst), was assessed at baseline and after 1 cycle of ibrutinib treatment (30 days), and reported as the median change in score with standard deviation.

Duration of Response (DoR)

Duration of response (DoR) was assessed through 2 years of treatment, and reported as the median with standard deviation, with response duration censored at last response assessment in the event of death or progression not documented.

Time-to-Response (TTR)

Time-to-response (TTR) was assessed through 2 years of treatment, and reported as the median with standard deviation, censored at last response assessment in the event of death or progression not documented.

Progression-free Survival (PFS)

Participants were assessed for progression-free survival (PFS) from the start of treatment through 2 years of treatment. The outcome is reported as the number of participants who were alive without disease progression after 2 years of treatment.

Overall Survival (OS)

Overall survival (OS) was assessed through 2 years of treatment, and recorded as the time from the start of treatment to either progression or death, with values censored at the last response assessment if the participant did not progress or die during that period. OS is reported as reported as the median with standard deviation.

Full Information

NCT ID

NCT02415608

First Posted

March 24, 2015

Last Updated

August 24, 2018

Sponsor

Jason Robert Gotlib

Collaborators

National Cancer Institute (NCI)

1. Study Identification

Unique Protocol Identification Number

NCT02415608

Brief Title

Ibrutinib in Treating Patients With Advanced Systemic Mastocytosis

Official Title

A Phase 2 Study of Ibrutinib in Advanced Systemic Mastocytosis

Study Type

Interventional

2. Study Status

Record Verification Date

August 2018

Overall Recruitment Status

Terminated

Why Stopped

Slow accrual

Study Start Date

March 2015 (undefined)

Primary Completion Date

November 4, 2016 (Actual)

Study Completion Date

June 14, 2017 (Actual)

3. Sponsor/Collaborators

Responsible Party, by Official Title

Sponsor-Investigator

Name of the Sponsor

Jason Robert Gotlib

Collaborators

National Cancer Institute (NCI)

4. Oversight

Studies a U.S. FDA-regulated Drug Product

Yes

Studies a U.S. FDA-regulated Device Product

Data Monitoring Committee

Yes

5. Study Description

Brief Summary

This phase 2 trial studies ibrutinib to see how well it works in treating patients with systemic (affecting the entire body) mastocytosis that has spread to other parts of the body and usually cannot be cured or controlled with treatment (advanced). Systemic mastocytosis is a disease in which too many mast cells (a type of immune system cell) are found throughout the body. Mast cells give off chemicals such as histamine that can cause flushing (a hot, red face), itching, abdominal cramps, muscle pain, nausea, vomiting, diarrhea, low blood pressure, and shock. Ibrutinib may stop the growth of mast cells by blocking some of the enzymes needed for cell growth.

Detailed Description

PRIMARY OBJECTIVE: Evaluate the response rate to ibrutinib in patients with advanced systemic mastocytosis (SM) (aggressive systemic mastocytosis [ASM] or mast cell leukemia [MCL], or SM-associated hematologic non-mast cell disorder [AHNMD]) by the end of 6 cycles (6 months). SECONDARY OBJECTIVES: Evaluate the tolerability and safety profile of ibrutinib in patients with advanced SM. Evaluate the pharmacokinetic (PK) profile of ibrutinib in a subset of patients with advanced SM. Evaluate changes in histopathology (blood and bone marrow) of patients with advanced SM in response to ibrutinib therapy. Evaluate changes in mastocytosis related symptom scores and quality-of-life (QOL) using a modified Myeloproliferative Neoplasm Symptom Assessment Form (MPNSAF). Evaluate the duration of response (DoR) and time to response (TTR). Evaluate progression-free survival (PFS) and overall survival. OUTLINE: Patients receive ibrutinib orally (PO) once daily (QD) on days 1 to 28. Treatment repeats every 28 days for up to 6 months in the absence of disease progression or unacceptable toxicity. Patients achieving an unconfirmed or confirmed clinical improvement (CI), partial response (PR), or complete response (CR) by the end of course 6 will be permitted to continue maintenance courses of ibrutinib on an ongoing basis until loss of response/progressive disease, or unacceptable toxicity. After completion of study treatment, patients are followed up for 30 days and then every 6 months thereafter.

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study

Aggressive Systemic Mastocytosis, Mast Cell Leukemia, Systemic Mastocytosis

7. Study Design

Primary Purpose

Treatment

Study Phase

Phase 2

Interventional Study Model

Parallel Assignment

Masking

None (Open Label)

Allocation

Non-Randomized

Enrollment

4 (Actual)

8. Arms, Groups, and Interventions

Arm Title

Ibrutinib 420 mg/day

Arm Type

Experimental

Arm Description

Participants receive ibrutinib daily on days 1 to 28, at 420 mg/day in 28-day cycles

Arm Title

Ibrutinib 560 mg/day

Arm Type

Experimental

Arm Description

Participants receive ibrutinib daily on days 1 to 28, at 560 mg/day in 28-day cycles

Intervention Type

Drug

Intervention Name(s)

Ibrutinib

Other Intervention Name(s)

Imbruvica, PCI-32765, BTK Inhibitor PCI-32765, CRA-032765

Intervention Description

Given orally in 28-day cycles

Primary Outcome Measure Information:

Title

Overall Response Rate (ORR)

Description

Time Frame

Up to 6 months

Secondary Outcome Measure Information:

Title

Number of Participants With Adverse Events

Description

Time Frame

30 days

Title

Ibrutinib Pharmacokinetics (PK)

Description

Time Frame

28 days

Title

Change of Mast Cell Burden

Description

Time Frame

2 years

Title

Serum Tryptase Levels

Description

Time Frame

2 years

Title

Total Symptom Score (TSS)

Description

Time Frame

30 days

Title

Change in Quality of Life (QoL)

Description

Time Frame

30 days

Title

Duration of Response (DoR)

Description

Time Frame

2 years

Title

Time-to-Response (TTR)

Description

Time Frame

2 years

Title

Progression-free Survival (PFS)

Description

Time Frame

2 years

Title

Overall Survival (OS)

Description

Time Frame

26 months

10. Eligibility

Sex

All

Minimum Age & Unit of Time

18 Years

Accepts Healthy Volunteers

Eligibility Criteria

INCLUSION CRITERIA Diagnosis of systemic mastocytosis per 2008 World Health Organization (WHO) criteria. Those with advanced systemic mastocytosis (ASM); mast cell leukemia (MCL); or systemic mastocytosis-associated hematological clonal non-mast cell lineage disease (SM-AHNMD) required to have at least 1 organ damage finding Serum aspartate transaminase (AST) or alanine transaminase (ALT) ≤ 3.0 x upper limit of normal (ULN); if considered related to ASM/MCL ≤ 5 x ULN Estimated creatinine clearance ≥ 30 mL/min (Cockcroft-Gault) Total bilirubin ≤ 1.5 x ULN (unless bilirubin rise is due to Gilbert's syndrome or of non-hepatic origin); if considered related to ASM/MCL ≤ 3 x ULN Female subjects must be of non-reproductive potential, or if of childbearing potential must have a negative serum pregnancy test upon study entry Must agree to use highly effective methods of birth control Written informed consent Eastern Cooperative Oncology Group (ECOG) performance status of 0 to 3 Life expectancy > 12 weeks EXCLUSION CRITERIA Received any investigational agent, chemotherapy, interferon-alpha, or 2-chlorodeoxyadenosine (2-CdA, cladribine) within 30 days prior to day 1; or monoclonal antibody ≤ 6 weeks prior to first administration of study treatment (patients with an AHNMD with progressive leukocytosis who require control of their counts are permitted to receive hydroxyurea) Diagnosis of AHNMD requiring immediate cytoreductive therapy or targeted drugs (eg, acute myeloid leukemia [AML]) History of other malignancies, except: Malignancy treated with curative intent and with no known active disease present for ≥ 3 years before the first dose of study drug, and at low risk for recurrence Adequately treated non-melanoma skin cancer or lentigo maligna without evidence of disease Adequately treated carcinoma in situ without evidence of disease Concurrent systemic immunosuppressant therapy (eg, cyclosporine A, tacrolimus, etc., or chronic administration [> 14 days] of > 10 mg/day of prednisone) within 28 days of the first dose of study drug Vaccinated with live, attenuated vaccines within 4 weeks of first dose of study drug Systemic treatment for infection completed ≤ 14 days before the first dose of study drug Unresolved toxicities from prior anti-cancer therapy, defined as having not resolved to Common Terminology Criteria for Adverse Event (CTCAE, version 4), grade 0 or 1, or to the levels dictated in the inclusion/exclusion criteria with the exception of alopecia Known bleeding disorders (eg, severe von Willebrand's disease) or severe hemophilia History of stroke or intracranial hemorrhage within 6 months prior to enrollment Known history of human immunodeficiency virus (HIV) or Active infection with hepatitis C virus (HCV) or hepatitis B virus (HBV) Major surgery within 4 weeks of first dose of study drug Any life-threatening illness, medical condition, or organ system dysfunction that could compromise the subject's safety or put the study outcomes at undue risk Currently active, clinically significant cardiovascular disease, such as uncontrolled arrhythmia or class 3 or 4 congestive heart failure as defined by the New York Heart Association Functional Classification; or a history of myocardial infarction, unstable angina, or acute coronary syndrome within 6 months prior to randomization Unable to swallow capsules or malabsorption syndrome Disease significantly affecting gastrointestinal function Resection of the stomach or small bowel Symptomatic inflammatory bowel disease Ulcerative colitis Partial or complete bowel obstruction Requires treatment with a strong cytochrome P450 (CYP) 3A4/5 inhibitor Lactating or pregnant Unwilling or unable to participate in all required study evaluations and procedures Unable to understand the purpose and risks of the study and to provide a signed and dated informed consent form (ICF) and authorization to use protected health information (in accordance with national and local subject privacy regulations) Known hypersensitivity to any excipient contained in the drug Received hematopoietic growth factor support within 14 days of day 1 of ibrutinib (Jehovah's witnesses may be given an erythropoiesis-stimulating agent before and during the trial in lieu of red blood cell transfusions but anemia and/or red blood cell (RBC) transfusion dependence cannot be used for response assessment in these patients) Presence of the factor interacting with poly(A) polymerase alpha (PAPOLA) and cleavage and polyadenylation specific factor 1 (CPSF1) (FIP1L1)-platelet-derived growth factor receptor, alpha polypeptide (PDGFRalpha) fusion even with resistance to imatinib (such patients are no longer defined as systemic mastocytosis by the WHO) Received any treatment with ibrutinib prior to study entry The concomitant use of warfarin or other vitamin K antagonists unless felt to be of significant clinical need; low molecular weight heparin or other anticoagulants may be used instead if anticoagulation is required

Overall Study Officials:

First Name & Middle Initial & Last Name & Degree

Jason Gotlib

Organizational Affiliation

Stanford University Hospitals and Clinics

Official's Role

Principal Investigator

Facility Information:

Facility Name

Stanford University Hospitals and Clinics

City

Stanford

State/Province

California

ZIP/Postal Code

94305

Country

United States

12. IPD Sharing Statement

Plan to Share IPD

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Ibrutinib in Treating Patients With Advanced Systemic Mastocytosis

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