Trametinib in Treating Patients With Relapsed or Refractory Juvenile Myelomonocytic Leukemia

Neurofibromatosis Type 1 Clinical Trial

Official title:

A Phase 2 Study of the MEK Inhibitor Trametinib (NSC# 763093) in Children With Relapsed or Refractory Juvenile Myelomonocytic Leukemia

Clinical Trial Details — Status: Active, not recruiting

Administrative data

• NCT number: NCT03190915
• Other study ID #: NCI-2017-00921
• Secondary ID: NCI-2017-00921AD
• Status: Active, not recruiting
• Phase: Phase 2
• Start date: September 9, 2018
• Est. completion date: September 22, 2024

Study information

• Verified date: October 2023
• Source: National Cancer Institute (NCI)
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

This phase II trial studies how well trametinib works in treating patients with juvenile myelomonocytic leukemia that has come back (relapsed) or does not respond to treatment (refractory). Trametinib may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth.

Description:

PRIMARY OBJECTIVE: I. To determine the objective response rate to trametinib in children with recurrent or refractory juvenile myelomonocytic leukemia (JMML). SECONDARY OBJECTIVES: I. To further define and describe the toxicities of single agent trametinib in children with recurrent or refractory JMML. II. To further characterize the pharmacokinetics of trametinib in children with recurrent or refractory JMML. III. To prospectively evaluate mutant allele burden as a marker of disease activity in JMML. IV. To measure the rate of complete responses in children with recurrent or refractory JMML. V. To measure the duration of response among responders. EXPLORATORY OBJECTIVE: I. To describe the distribution of JMML diagnostic criteria in children with recurrent or refractory JMML. OUTLINE: Patients receive trametinib orally (PO) once daily (QD) on days 1-28 of each cycle. Treatment repeats every 28 days for up to 12 cycles in the absence of disease progression or unacceptable toxicity. Patients undergo a bone marrow aspiration or biopsy at baseline, on day 28 of cycles 1 and 2, at all subsequent odd numbered cycles, and at end of treatment. After completion of study treatment, patients are followed up annually for up to 5 years.

Recruitment information / eligibility

• Status: Active, not recruiting
• Enrollment: 10
• Est. completion date: September 22, 2024
• Est. primary completion date: March 31, 2023
• Accepts healthy volunteers: No
• Gender: All
• Age group: 1 Month to 21 Years

Eligibility

Inclusion Criteria:

• Patients must be >= 1 month and < 22 years of age at the time of study entry
• Patients must have had histologic verification of juvenile myelomonocytic leukemia (JMML) at original diagnosis and currently have relapsed or refractory disease; the diagnosis is made based on the following criteria
• JMML category 1 (all of the following): the diagnostic criteria must include all features in category 1 and EITHER (i) one of the features in category 2 OR (ii) two features from category 3 to make the diagnosis
• Splenomegaly
• > 1000 (1 x 10^9/uL) circulating monocytes
• < 20% blasts in the bone marrow or peripheral blood
• Absence of the t(9;22) or BCR/ABL fusion gene
• JMML category 2 (at least one of the following if at least two category 3

criteria are not present):

• Somatic mutation in RAS or PTPN11
• Clinical diagnosis of NF1 or NF1 gene mutation
• Homozygous mutation in CBL
• Monosomy 7
• JMML category 3 (at least two of the following if no category 2 criteria are

met):

• Circulating myeloid precursors
• White blood cell count, > 10 000 (10 x 10^9/ uL)
• Increased hemoglobin F for age
• Clonal cytogenetic abnormality
• GM-CSF hypersensitivity
• Patients with refractory or relapsed JMML must have had at least one cycle of intensive frontline therapy or at least 2 cycles of a deoxyribonucleic acid (DNA) demethylating agent with persistence of disease, defined by clinical symptoms or the presence of a clonal abnormality; frontline therapy is defined as one cycle of intravenous chemotherapy that includes any of the following agents: fludarabine, cytarabine, or any anthracycline but specifically excludes oral 6-mercaptopurine; frontline therapy will also include any conditioning regimen as part of a stem cell transplant; patients who transform to AML at any point with more than 20% blasts are not eligible for this trial
• Patients must have a Lansky or Karnofsky performance status score of >= 50, corresponding to Eastern Cooperative Oncology Group (ECOG) categories 0, 1 or 2; use Karnofsky for patients > 16 years of age and Lansky for patients =< 16 years of age; patients who are unable to walk because of paralysis, but who are up in a wheelchair, will be considered ambulatory for the purpose of assessing the performance score
• Patients must have fully recovered from the acute toxic effects of all prior chemotherapy, immunotherapy, or radiotherapy prior to study enrollment
• Myelosuppressive chemotherapy: patients must have completely recovered from all acute toxic effects of chemotherapy, immunotherapy or radiotherapy prior to study enrollment; at least 14 days must have elapsed since the completion of cytotoxic therapy, with the exception of hydroxyurea
• Note: cytoreduction with hydroxyurea can be initiated and continued for up to 24 hours prior to the start of protocol therapy
• Hematopoietic growth factors: at least 14 days after the last dose of a long-acting growth factor (e.g., pegfilgrastim) or 7 days for short-acting growth factor; for agents that have known adverse events occurring beyond 7 days after administration, this period must be extended beyond the time during which adverse events are known to occur
• Biologic (anti-neoplastic agent): at least 7 days must have elapsed since completion of therapy with a biologic agent; for agents that have known adverse events occurring beyond 7 days after administration, this period prior to enrollment must be extended beyond the time during which adverse events are known to occur
• Monoclonal antibodies:
• At least 30 days after the completion of any type of immunotherapy, e.g. tumor vaccines
• At least 3 half-lives must have elapsed since prior therapy that included a monoclonal antibody
• Radiotherapy:
• >= 2 weeks must have elapsed since local palliative external radiation therapy (XRT) (small port)
• >= 6 months must have elapsed if prior craniospinal XRT was received, if >= 50% of the pelvis was irradiated, or if traumatic brain injury (TBI) was received
• >= 4 weeks must have elapsed if other substantial bone marrow irradiation was given
• Stem cell transplant or rescue without TBI: no evidence of active graft versus (vs.) host disease and >= 3 months must have elapsed since transplant; >= 4 weeks must have elapsed since any donor lymphocyte infusion
• Patients must not be known to be refractory to red blood cell or platelet transfusions
• Creatinine clearance or radioisotope glomerular filtration rate (GFR) >= 70 mL/min/1.73 m^2 (within 7 days prior to enrollment) or a serum creatinine based on

age/gender as follows (within 7 days prior to enrollment):

• Age: Maximum serum creatinine (mg/dL)
• 1 month to < 6 months: 0.4 (male) 0.4 (female)
• 6 months to < 1 year: 0.5 (male) 0.5 (female)
• 1 to < 2 years: 0.6 (male) 0.6 (female)
• 2 to < 6 years: 0.8 (male) 0.8 (female)
• 6 to < 10 years: 1 (male) 1 (female)
• 10 to < 13 years: 1.2 (male) 1.2 (female)
• 13 to < 16 years: 1.5 (male) 1.4 (female)
• >= 16 years: 1.7 (male) 1.4 (female)
• Total bilirubin =< 1.5 x upper limit of normal (ULN) for age (within 7 days prior to enrollment)
• Serum glutamate pyruvate transaminase (SGPT) (alanine aminotransferase [ALT]) =< 3 x ULN (=< 135 U/L) (within 7 days prior to enrollment) (for the purpose of this study, the ULN for SGPT is 45 U/L)
• Serum albumin >= 2 g/dL (within 7 days prior to enrollment)
• Shortening fraction of >= 27% by echocardiogram OR ejection fraction of >= 50% by multi-gated acquisition (MUGA)
• Corrected QT (by Bazett's formula [QTcB]) interval < 450 msecs
• Patients must be able to swallow tablets or liquid; use of a nasogastric or gastrostomy (G) tube is also allowed

Exclusion Criteria:

• Patients who are pregnant or breast-feeding are not eligible for this study as there is yet no available information regarding human fetal or teratogenic toxicities; negative pregnancy tests must be obtained in girls who are post-menarchal; patients of reproductive potential may not participate unless they have agreed to use an effective contraceptive method for the duration of study therapy; women of childbearing potential should be advised to use effective contraception for 4 months after the last dose of trametinib; trametinib may also potentially be secreted in milk and therefore breastfeeding women are excluded; female patients should not breastfeed during treatment with trametinib, and for 4 months following the last dose; male patients must use a condom during intercourse and agree not to father a child during therapy and for 4 months following discontinuation of trametinib to avoid unnecessary exposure of trametinib to the fetus
• Concomitant Medications
• Corticosteroids: patients requiring corticosteroids who have not been on a stable or decreasing dose of corticosteroid for the 7 days prior to enrollment are not eligible; if used to modify immune adverse events related to prior therapy, >= 14 days must have elapsed since last dose of corticosteroid
• Note: hydrocortisone used as a pre-medication to prevent transfusion related reactions is not considered a concomitant corticosteroid
• Investigational drugs: patients who are currently receiving another investigational drug are not eligible
• Anti-cancer agents: patients who are currently receiving other anti-cancer agents are not eligible (except patients receiving hydroxyurea, which may be continued until 24 hours prior to start of protocol therapy)
• Anti-graft versus host disease (GVHD) or agents to prevent organ rejection post-transplant: patients who are receiving cyclosporine, tacrolimus or other agents to prevent either graft-versus-host disease post bone marrow transplant or organ rejection post-transplant are not eligible for this trial
• Cardiac medications: any medications for treatment of left ventricular systolic dysfunction
• Patients who have an uncontrolled infection are not eligible
• Patients who in the opinion of the investigator may not be able to comply with the safety monitoring requirements of the study are not eligible
• Patients with a history of hepatic sinusoid obstructive syndrome (veno-occlusive disease) within the prior 3 months are not eligible
• Patients with a history of or current evidence/risk of retinal vein occlusion (RVO) or central serous retinopathy (CSR) are not eligible
• Patients with a history of RVO or CSR, or predisposing factors to RVO or CSR (e.g., uncontrolled glaucoma or ocular hypertension
• Patients with uncontrolled systemic disease(s) such as hypertension or diabetes mellitus are not eligible; blood pressure must be =< the 95th percentile for age, height, and gender
• Patients with a history of allergic reaction attributed to compounds of similar chemical or biologic composition to the MEK inhibitor, trametinib are not eligible
• Patients with a clinical diagnosis of Noonan syndrome are not eligible; Note: patients with Casitas B-lineage lymphoma (CBL) syndrome, also known as Noonan-like syndrome, are eligible to enroll

Related Conditions & MeSH terms

• Juvenile Myelomonocytic Leukemia
• Leukemia
• Leukemia, Myelomonocytic, Acute
• Leukemia, Myelomonocytic, Chronic
• Leukemia, Myelomonocytic, Juvenile
• Neurofibromatoses
• Neurofibromatosis 1
• Neurofibromatosis Type 1

Intervention

Procedure:
• Bone Marrow Aspiration and Biopsy
Undergo bone marrow aspiration or biopsy

Drug:
• Trametinib
Given PO

Locations

Country	Name	City	State
United States	C S Mott Children's Hospital	Ann Arbor	Michigan
United States	Children's Healthcare of Atlanta - Egleston	Atlanta	Georgia
United States	Children's Hospital Colorado	Aurora	Colorado
United States	Dell Children's Medical Center of Central Texas	Austin	Texas
United States	National Institutes of Health Clinical Center	Bethesda	Maryland
United States	Children's Hospital of Alabama	Birmingham	Alabama
United States	Dana-Farber Cancer Institute	Boston	Massachusetts
United States	Carolinas Medical Center/Levine Cancer Institute	Charlotte	North Carolina
United States	Lurie Children's Hospital-Chicago	Chicago	Illinois
United States	Cincinnati Children's Hospital Medical Center	Cincinnati	Ohio
United States	Nationwide Children's Hospital	Columbus	Ohio
United States	UT Southwestern/Simmons Cancer Center-Dallas	Dallas	Texas
United States	Dayton Children's Hospital	Dayton	Ohio
United States	Rocky Mountain Hospital for Children-Presbyterian Saint Luke's Medical Center	Denver	Colorado
United States	Kaiser Permanente Downey Medical Center	Downey	California
United States	Duke University Medical Center	Durham	North Carolina
United States	BI-LO Charities Children's Cancer Center	Greenville	South Carolina
United States	Connecticut Children's Medical Center	Hartford	Connecticut
United States	Baylor College of Medicine/Dan L Duncan Comprehensive Cancer Center	Houston	Texas
United States	Riley Hospital for Children	Indianapolis	Indiana
United States	University of Iowa/Holden Comprehensive Cancer Center	Iowa City	Iowa
United States	Nemours Children's Clinic-Jacksonville	Jacksonville	Florida
United States	Children's Mercy Hospitals and Clinics	Kansas City	Missouri
United States	University of Kentucky/Markey Cancer Center	Lexington	Kentucky
United States	Arkansas Children's Hospital	Little Rock	Arkansas
United States	Loma Linda University Medical Center	Loma Linda	California
United States	Saint Jude Children's Research Hospital	Memphis	Tennessee
United States	Nicklaus Children's Hospital	Miami	Florida
United States	University of Miami Miller School of Medicine-Sylvester Cancer Center	Miami	Florida
United States	Children's Hospital of Wisconsin	Milwaukee	Wisconsin
United States	Children's Hospitals and Clinics of Minnesota - Minneapolis	Minneapolis	Minnesota
United States	University of Minnesota/Masonic Cancer Center	Minneapolis	Minnesota
United States	The Children's Hospital at TriStar Centennial	Nashville	Tennessee
United States	Vanderbilt University/Ingram Cancer Center	Nashville	Tennessee
United States	The Steven and Alexandra Cohen Children's Medical Center of New York	New Hyde Park	New York
United States	Mount Sinai Hospital	New York	New York
United States	NYP/Columbia University Medical Center/Herbert Irving Comprehensive Cancer Center	New York	New York
United States	Kaiser Permanente-Oakland	Oakland	California
United States	University of Oklahoma Health Sciences Center	Oklahoma City	Oklahoma
United States	Children's Hospital of Orange County	Orange	California
United States	Arnold Palmer Hospital for Children	Orlando	Florida
United States	Nemours Children's Hospital	Orlando	Florida
United States	Lucile Packard Children's Hospital Stanford University	Palo Alto	California
United States	Saint Jude Midwest Affiliate	Peoria	Illinois
United States	Children's Hospital of Philadelphia	Philadelphia	Pennsylvania
United States	Phoenix Childrens Hospital	Phoenix	Arizona
United States	Children's Hospital of Pittsburgh of UPMC	Pittsburgh	Pennsylvania
United States	Oregon Health and Science University	Portland	Oregon
United States	Washington University School of Medicine	Saint Louis	Missouri
United States	Primary Children's Hospital	Salt Lake City	Utah
United States	Methodist Children's Hospital of South Texas	San Antonio	Texas
United States	UCSF Medical Center-Mission Bay	San Francisco	California
United States	Seattle Children's Hospital	Seattle	Washington
United States	Saint Joseph's Hospital/Children's Hospital-Tampa	Tampa	Florida
United States	Children's National Medical Center	Washington	District of Columbia
United States	MedStar Georgetown University Hospital	Washington	District of Columbia
United States	Alfred I duPont Hospital for Children	Wilmington	Delaware

Sponsors (2)

Lead Sponsor	Collaborator
National Cancer Institute (NCI)	Children's Oncology Group

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Objective response	Response rates will be calculated as the percent of evaluable patients who are responders, and confidence intervals will be constructed accounting for the two-stage design. A responder is defined as a patient who achieves a best response of PR or CR on the study prior to having an overall response of PD; all others will be considered non-responders.	12 cycles (1 cycle = 28 days)
Secondary	Incidence of adverse events	Will be assessed by National Cancer Institute Common Terminology Criteria for Adverse Events version 5.0. Will report the percentage of patients within each disease stratum who experienced a grade 3 or higher toxicity with attribution of possible, probable, or definite while on protocol therapy or within 30 days of the last dose of therapy.	Up to cycle 12 (1 cycle = 28 days)
Secondary	Pharmacokinetic (PK) parameters of trametinib	A descriptive analysis of pharmacokinetic parameters of trametinib will be performed to define systemic exposure, drug clearance, Trametinib concentrations, and other pharmacokinetic parameters. The PK parameters will be summarized with simple summary statistics, including means, medians, ranges, and standard deviations (if numbers and distribution permit).	Up to cycle 12 (1 cycle = 28 days)
Secondary	Trametinib concentrations	Will be measured by mass spectrometry. Will be analyzed descriptively. Values will be summarized with means and standard deviations.	Up to cycle 12 (1 cycle = 28 days)
Secondary	Mutant allele burden	Will be measured by next-generation sequencing. Will be analyzed descriptively. Values will be summarized with means and standard deviations.	Up to cycle 12 (1 cycle = 28 days)
Secondary	Complete Response	Complete Response rates will be calculated as the percent of evaluable patients who had an overall best response of Complete Response, and confidence intervals will be constructed accounting for the two-stage design.	12 cycles (1 cycle = 28 days)
Secondary	Duration of Response	The 2-year Event-Free Survival will be estimated using Kaplan-Meier methodology.	2-year