A Phase II Study of Crenolanib in Relapsed/Refractory Acute Myeloid Leukemia Patients With FLT3 Activating Mutations

NCT01657682•Arog Pharmaceuticals, Inc.

Summary

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.

Eligibility

Age

18 - No limit years

Sex

ALL

Healthy Volunteers

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)
+3 more criteria

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.
+1 more criteria

Locations (1)

MD Anderson Cancer Center

Houston, Texas, United States

Key Dates

Start Date

October 1, 2012

Primary Completion Date

April 1, 2019

Completion Date

April 1, 2019

Last Updated

November 30, 2023

Enrollment

ACTUAL participants

Conditions

Acute Myeloid Leukemia With FLT3 Activating Mutations That Has Relapsed or Been Refractory After One or More Prior Therapies

Interventions

Crenolanib besylate

DRUG