Description:
This pilot Phase II study is designed to evaluate the efficacy and tolerability of crenolanib
in two cohorts of AML patients with FLT3 activation mutations (patients whose leukemia has
recurred after prior chemotherapy not including a FLT3 TKI and patients whose leukemia has
progressed after prior therapy with a FLT3 TKI).
Title
- Brief Title: A Phase II Study of Crenolanib in Relapsed/Refractory Acute Myeloid Leukemia Patients With FLT3 Activating Mutations
- Official Title: A Phase II Study of Crenolanib in Relapsed/Refractory Acute Myeloid Leukemia Patients With FLT3 Activating Mutations
Clinical Trial IDs
- ORG STUDY ID:
ARO-005
- NCT ID:
NCT01657682
Conditions
- Acute Myeloid Leukemia With FLT3 Activating Mutations That Has Relapsed or Been Refractory After One or More Prior Therapies
Interventions
Drug | Synonyms | Arms |
---|
Crenolanib besylate | | Cohort A - No prior FLT3 TKI exposure |
Purpose
This pilot Phase II study is designed to evaluate the efficacy and tolerability of crenolanib
in two cohorts of AML patients with FLT3 activation mutations (patients whose leukemia has
recurred after prior chemotherapy not including a FLT3 TKI and patients whose leukemia has
progressed after prior therapy with a FLT3 TKI).
Detailed Description
This is a Phase II open label study of crenolanib besylate. This study will enroll subjects
with relapsed acute myeloid leukemia (AML) with FLT3 activating mutations. Two cohorts of
patients will be enrolled: those whose AML has recurred after prior chemotherapy without a
FLT3 TKI, and those whose AML has progressed after prior therapy with FLT3 TKIs. Subjects
will take Crenolanib besylate at 100 mg TID until disease progression, death, or unacceptable
toxicities. Concurrent hydroxyurea is permitted during the first 28 days of study therapy.
Trial Arms
Name | Type | Description | Interventions |
---|
Cohort A - No prior FLT3 TKI exposure | Experimental | Will enroll relapsed/refractory AML patients with FLT3 activating mutations who progressed on one or more prior chemotherapy regimens excluding any FLT3 TKI. | |
Cohort B - Prior therapy with FLT3 TKI | Experimental | Will enroll relapsed/refractory AML patients with FLT3 activating mutations whose leukemia has progressed and have history of prior therapy with one or more FLT3 TKIs. | |
Eligibility Criteria
Inclusion Criteria:
- Confirmed primary AML relapsed or refractory after prior therapy, AML secondary to
antecedent chemotherapy or radiation therapy, or AML due to prior myelodysplastic
syndrome (MDS)/ myeloproliferative neoplasm (MPN) as defined by WHO criteria with
presence of either FLT3 ITD and/or other FLT3 activating mutations
- Patients with secondary AML should have failed no more than two (2) prior regimens
- Patients with antecedent MDS/MPN, defined by WHO criteria, without any prior therapy
for AML, regardless of the number of therapies for MDS/ MPN
- Patients with primary AML should have received no more than two (2) prior cytotoxic
containing salvage regimens. Reinduction with the same regimen or stem cell transplant
will not be considered a separate salvage regimen. Change of drugs will be considered
a salvage regimen. Unlimited FLT3 TKI therapy (even in combination with
cytotoxics/hypomethylating agents) is allowed for patients enrolled in cohort B
- Patients must have tested positive for FLT3-ITD and /or other FLT3 activating
mutations within 30 day screening period
- Males and females age ≥18 years
- ECOG PS 0-2
- Adequate liver function, defined as bilirubin ≤1.5x ULN, ALT ≤3.0x ULN, and AST ≤3.0x
ULN
- Adequate renal function, defined as serum creatinine ≤1.5x ULN
- Recovery from non-hematological toxicities of prior therapy (including HSCT) to no
more than grade 1 (except alopecia)
- Subjects should have received no anti-leukemic therapy (except hydroxyurea) prior to
the first dose of crenolanib as follows: for 14 days for classical cytotoxic agents
and for five times the t1/2 (half-life) for FLT3 inhibitors and antineoplastic agents
that are neither cytotoxic nor FLT3 inhibitors (e.g. hypomethylating agent or MEK
inhibitor)
- Negative pregnancy test for WOCBP
- Able and willing to provide written informed consent.
Exclusion Criteria:
- Absence of a FLT3 activating mutation
- <5% blasts in blood or marrow at screening
- Concurrent chemotherapy, or targeted anti-cancer agents, other than hydroxyurea
- Patient with concurrent severe and/or uncontrolled medical conditions that in the
opinion of the investigator may impair the participation in the study or the
evaluation of safety and/or efficacy
- HIV infection or active hepatitis B (defined as hepatitis B surface antigen positive)
or C (defined as hepatitis C antibody positive)
- Known clinically active central nervous system (CNS) leukemia
- Patients less than 30 days post HSCT
- Subjects who have clinically significant graft versus host disease requiring treatment
and /or have >grade 2 persistent non hematological toxicity related to transplant
- Prior crenolanib treatment for a non-leukemic indication
- Major surgical procedures within 14 days of Day 1 administration of crenolanib.
- Unwillingness or inability to comply with protocol.
Maximum Eligible Age: | N/A |
Minimum Eligible Age: | 18 Years |
Eligible Gender: | All |
Healthy Volunteers: | No |
Primary Outcome Measures
Measure: | Response rate of patients receiving crenolanib therapy |
Time Frame: | 1 year |
Safety Issue: | |
Description: | To determine the response rate to crenolanib, including the rates of complete remission (CR), CR with incomplete blood count recovery (CRi), and partial remission (PR), in relapsed/refractory AML patients with FLT3 activating mutations after first cycle (28-days) and at best response. |
Secondary Outcome Measures
Measure: | Duration of response |
Time Frame: | 1 year |
Safety Issue: | |
Description: | To determine the duration of clinical response in AML patients with FLT3 activating mutations treated with crenolanib. |
Measure: | Pharmacodynamic markers |
Time Frame: | 1 year |
Safety Issue: | |
Description: | To analyze phospho-FLT3 and other pharmacodynamic markers from serially collected circulating leukemic blasts and/or marrow blast samples |
Measure: | Duration of progression-free survival and overall survival |
Time Frame: | 1 year |
Safety Issue: | |
Description: | To determine the progression free survival and overall survival of AML patients with activating FLT3 mutations treated with crenolanib |
Measure: | Pharmacokinetic markers |
Time Frame: | 1 year |
Safety Issue: | |
Description: | To characterize the pharmacokinetics of crenolanib in adult patients and relate drug disposition to outcome or pharmacodynamic markers (i.e. toxicity and/or FLT3 inhibition) |
Details
Phase: | Phase 2 |
Primary Purpose: | Interventional |
Overall Status: | Completed |
Lead Sponsor: | Arog Pharmaceuticals, Inc. |
Trial Keywords
- FLT3
- Crenolanib
- Acute
- Myeloid
- AML
Last Updated
July 20, 2020