Overview
SJ901: Evaluation of Mirdametinib in Children, Adolescents, and Young Adults With Low-Grade Glioma
Status:
Recruiting
Recruiting
Trial end date:
2031-06-01
2031-06-01
Target enrollment:
0
0
Participant gender:
All
All
Summary
This is an open-label, multi-center, Phase 1/2 study of the brain-penetrant MEK inhibitor, mirdametinib (PD-0325901), in patients with pediatric low-grade glioma (pLGG).Phase:
Phase 1/Phase 2Accepts Healthy Volunteers?
NoDetails
Lead Sponsor:
St. Jude Children's Research HospitalCollaborator:
SpringWorks Therapeutics, Inc.
Criteria
Inclusion Criteria: Screening Phase- Participants with histologically confirmed or suspected low-grade glioma, including
neuronal and mixed neuronal-glial tumors
- Participant must have adequate tumor tissue from primary and/or relapsed tumor for
central pathology review
- Projected to be ≥ 2 years and < 25 years at the time of study enrollment
- Participant's body surface area (BSA) at time of study enrollment must fall within the
range outlined in the protocol for the specific dose level under evaluation:
- Phase 1: Dose Finding/Dose-escalation
- For Phase 1 participant's BSA must fall within the range specified in the
protocol for the specific dose level under evaluation.
- Phase 2: All Cohorts:
- For Phase 2 of the study the upper BSA restrictions will be removed.
- Participant and/or guardian can understand and is willing to sign a written informed
consent document according to institutional guidelines
Exclusion Criteria: Screening Phase
- Participants with retinal pathology on ophthalmologic examination that is consistent
with or a precursor for central serous retinopathy, retinal vein occlusion (RVO), or
neovascular macular degeneration
- Participants with a known malabsorption syndrome or preexisting gastrointestinal
conditions that may impair absorption of mirdametinib (e.g., gastric bypass, lap band,
or other gastric procedures)
- Participant with a known history of liver disease or known hepatic or biliary
abnormalities (except for Gilbert's syndrome or asymptomatic gallstones)
- Participants with a clinically significant history of chronic interstitial lung
disease (such as bronchopulmonary dysplasia, chronic bronchiolitis, obliterative
bronchiolitis, chronic aspiration pneumonia, surfactant protein disorder, or other
serious chronic pulmonary condition). Participants with a history of asthma, reactive
airways disease, or viral pneumonitis are not to be excluded if disease has resolved
or is well-controlled.
Inclusion Criteria: Phase 1 and Phase 2, All Cohorts
- Participant must be ≥ 2 years and < 25 years of age at the time of enrollment
- Participant's BSA at time of study enrollment must fall within the range outlined
below for the specific dose level under evaluation:
- Phase 1: Dose-finding/Dose-escalation
- For Phase 1 participant's BSA must fall within the range specified in the
protocol for the specific dose level under evaluation.
- Phase 2: All Cohorts
- For Phase 2 of the study the upper BSA restrictions will be removed.
- Participant must have confirmation of one of the following diagnosis per St. Jude
Children's Research Hospital central pathology review of primary and/or relapsed
tumor:
- Eligible tumors include:
- Low-grade glioma/astrocytic tumor/glioneuronal tumor/neuroepithelial tumor,
not otherwise specified (NOS) or not elsewhere classified (NEC)
- Pilocytic astrocytoma
- Pilomyxoid astrocytoma
- Pleomorphic xanthroastrocytoma
- Ganglioglioma
- Gangliocytoma
- Diffuse glioma, diffuse astrocytoma, oligodendroglioma, or oligoastrocytoma
- Papillary glioneuronal tumor
- Rosette-forming glioneuronal tumor
- Diffuse leptomeningeal glioneuronal tumor
- Central neurocytoma, extraventricular neurocytoma
- Angiocentric glioma
- Dysembryoplastic neuroepithelial tumor (DNET), septal DNET, myxoid
glioneuronal tumor
- Tectal glioma
- Desmoplastic infantile astrocytoma / ganglioglioma
- Polymorphous low-grade neuroepithelial tumor of the young
- Multinodular and vacuolating neuronal tumor
- In addition, tumor on central review must show evidence supporting MAPK pathway
activation as defined by IHC, FISH and/or DNA/RNA sequencing (i.e. BRAF fused or
rearranged, FGFR1/2/3 aberration, PTPN11, SOS1, RAF1 mutations, MYB or MYBL1 fused or
rearranged, etc.) or occur in a participant with known NF1, NF2, SOS1, RAF1, or PTPN11
germline mutation. (Note: tests that show evidence supporting MAPK pathway activation
that have been already performed do not need to be repeated as long as deemed
acceptable by central review).
- Participant must have measurable or evaluable disease (as defined in the protocol)
- Note: Participants with metastatic disease or multiple independent primary LGGs
are allowed on study.
- Participants who are receiving corticosteroids must be on a stable or decreasing dose
for at least 1 week prior to enrollment with no plans for escalation.
- Participant must have a Lansky (<16 years) or Karnofsky (≥16 years) performance score
of ≥ 50 and, in the opinion of the investigator, a minimum life expectancy of at least
6 weeks.
- Note: Participants 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.
- Participant must have adequate bone marrow and organ function as defined as:
- ANC ≥ 1.0 x 10^9/L without growth factor support within 7 days
- Platelet count ≥ 75x 10^9/L without support of a platelet transfusion within 7
days
- Hemoglobin ≥8.0 g/dL without support of a blood transfusion within 7 days
- Potassium, total calcium (corrected for serum albumin), magnesium, sodium and
phosphorus must be ≤ grade 1 or corrected to ≤ grade 1 with supplements before
first dose of study medication
- Alanine aminotransferase (ALT) and aspartate aminotransferase (AST) ≤ 2.5 x ULN.
For the purposes of this study the ULN of ALT and AST is 45 U/L.
- Total bilirubin ≤ ULN; or if > ULN then direct bilirubin ≤ 1.5 x ULN
- Adequate renal function defined as:
- Serum creatinine ≤ the maximum serum creatinine based on age/gender: Age: 2 to <
6 years: maximum serum creatinine (mg/dL) 0.8 (male, female), Age: 6 to <10
years: maximum serum creatinine (mg/dL) 1 (male, female), Age: 10 to <13 years:
maximum serum creatinine (mg/dL) 1.2 (male, female), Age: 13 to <16 years:
maximum serum creatinine (mg/dL) 1.5 (male); 1.4 (female), Age: ≥ 16 years:
maximum serum creatinine (mg/dL) 1.7 (male); 1.4 (female)
- Adequate cardiac function defined as:
- LVEF > 50% by ECHO
- QTc interval ≤ 450 msec for male participants, ≤ 470 msec for female participants
after electrolytes have been corrected.
- Hypertension:
- Patients 2-12.99 years of age must have a blood pressure that is ≤ 95th
percentile +10 mmHg for age, height, and gender at the time of enrollment (with
or without the use of anti-hypertensive medications).
- Patients ≥ 13 years of age must have a blood pressure ≤ 140/90 mmHg at the time
of enrollment (with or without the use of anti-hypertensive medications).
- Note for patients of all ages: Adequate blood pressure can be achieved using
medication for the treatment of hypertension.
- Participants of childbearing/child-fathering potential must agree to use
contraception.
- Participants and/or guardian have the ability to understand and the willingness to
sign a written informed consent document according to institutional guidelines.
- Participants who are receiving P-gp and BCRP inhibitors must have received their last
dose a week or 5 half-lives (whichever is greater) prior to the first mirdametinib
dose.
Inclusion Criteria: Phase 1: Progressive or Recurrent Low-Grade Glioma without Previous
MEKi exposure
- Participant's tumor must have unambiguously progressed, relapsed, or recurred during
or after the most recent prior therapy (chemotherapy or radiotherapy) and
pseudoprogression or treatment-related tumor changes have, in the opinion of the
investigator, been thoroughly vetted.
- Progression may be radiographic or clinical (i.e. vision deterioration thought to
be related to tumor in patients with optic pathway tumors, or neurologic
deterioration thought to be related to tumor) but it must be unequivocal and
sufficient to warrant treatment in the opinion of the investigator.
- Prior therapy:
- Patients who have received the following:
- ≤ 3 prior treatment regimens with either myelosuppressive chemotherapy or
biologic agents and/or
- focal radiotherapy
- Note that a treatment regimen is defined as a single agent (chemotherapeutic or
biologic), or a sequential combination of therapies that can include radiotherapy
(with or without concurrent radiosensitizer, chemotherapy, or biologic therapy)
followed by maintenance therapy (either single or combination) given over a period of
time at either diagnosis or relapse.
- Chemotherapy:
- Participant must have received their last dose of myelosuppressive anticancer
chemotherapy at least 21 days prior to study enrollment or at least 42 days if
nitrosourea.
- Monoclonal antibody treatment and agents with known prolonged half-lives:
- Patient must have recovered from any acute toxicity potentially related to the
agent and received their last dose of the agent ≥ 28 days prior to study
enrollment
- MEK inhibitors:
- Patients must not have received prior exposure to any MEK inhibitors
- XRT/External Beam Irradiation including Protons:
- Participant must have had their last fraction of radiation ≥ 3 months prior to
study enrollment
Inclusion Criteria: Phase 2, Cohort 1: Newly Diagnosed and/or previously untreated (except
surgery) Low-Grade Glioma
- No prior anti-cancer treatment except surgery.
- In the opinion of the investigator tumor must warrant treatment defined as any of the
following: unsafe to observe, unequivocally progressing on serial imaging, tumor is
causing or at high risk of causing neurologic or vision-related deficits.
Inclusion Criteria: Phase 2, Cohort 2: Progressive or Recurrent Low-Grade Glioma without
Previous MEK Inhibitor Exposure
- Participant's tumor must have unambiguously progressed, relapsed, or recurred during
or after the most recent prior therapy (chemotherapy or radiotherapy) and
pseudoprogression or treatment-related tumor changes have, in the opinion of the
investigator, been thoroughly vetted.
- Progression may be radiographic or clinical (i.e. vision deterioration thought to
be related to tumor in patients with optic pathway tumors, or neurologic
deterioration thought to be related to tumor) but it must be unequivocal and
sufficient to warrant treatment in the opinion of the investigator.
- Prior therapy:
- Chemotherapy:
- Participant must have received their last dose of myelosuppressive
anticancer chemotherapy at least 21 days prior to study enrollment or at
least 42 days if nitrosourea.
- Monoclonal antibody treatment and agents with known prolonged half-lives:
- Patient must have recovered from any acute toxicity potentially related to
the agent and received their last dose of the agent ≥ 28 days prior to study
enrollment
- MEK inhibitors:
- Patients must not have received prior exposure to any MEK inhibitors
- XRT/External Beam Irradiation including Protons:
- Participant must have had their last fraction of radiation ≥ 3 months prior
to study enrollment.
- Note that for this cohort, there are no limitations on number of prior treatment
regimens and participants who have received craniospinal radiation are eligible
Inclusion Criteria: Phase 2, Cohort 3: Progressive or Recurrent Low-Grade Glioma with
Previous MEK inhibitor Exposure
- Cohort 3A (MEKi responders): Patients who previously received 6 or more cycles of any
MEK inhibitor (including mirdametinib) and did NOT progress while on active MEK
inhibitor therapy.
- The progression must have occurred off MEK inhibitor therapy
- Participant's tumor must have unambiguously relapsed or clinically progressed.
Progression may be radiographic or clinical (i.e. vision deterioration thought to
be related to tumor in patients with optic pathway tumors, or neurologic
deterioration thought to be related to tumor) but it must be unequivocal and
sufficient to warrant treatment in the opinion of the investigator.
- Patient must not have discontinued MEKi (specifically mirdametinib) for
unacceptable toxicity, and in the opinion of the PI be able to tolerate
subsequent courses of MEKi therapy.
- Patients must have received treatment with a MEK inhibitor for ≥6 cycles and
showed no signs of progression while on active MEK inhibitor therapy.
- Patients who received additional anti-tumor therapy following discontinuation of
MEK inhibitor can be enrolled in this cohort.
- Prior Therapy:
- Chemotherapy:
- Participant must have received their last dose of myelosuppressive
anticancer chemotherapy at least 21 days prior to study enrollment or at
least 42 days if nitrosourea.
- Monoclonal antibody treatment and agents with known prolonged half-lives:
- Patient must have recovered from any acute toxicity potentially related to
the agent and received their last dose of the agent ≥ 28 days prior to study
enrollment.
- MEK inhibitors:
- Participant must have received their last dose of MEKi at least 3 weeks
prior to study enrollment.
- XRT/External Beam Irradiation including Protons:
- Participant must have had their last fraction of radiation ≥ 3 months prior
to study enrollment.
- Note that for this cohort, there are no limitations on number of prior treatment
regimens and participants who have received craniospinal radiation are eligible
- Cohort 3B (MEKi non-responders): Patients with previous exposure to alternative MEK
inhibitors (excluding mirdametinib) who progressed while on active MEK inhibitor
therapy
- Participant's tumor must have unambiguously relapsed or clinically progressed.
- Progression may be radiographic or clinical (i.e. vision deterioration thought to
be related to tumor in patients with optic pathway tumors, or neurologic
deterioration thought to be related to tumor) but it must be unequivocal and
sufficient to warrant treatment in the opinion of the investigator. Progression
or recurrence must have occurred while on active MEK inhibitor therapy (excluding
mirdametinib)
- Participants are eligible regardless of how many prior cycles were received or
prior history of response (i.e. PR, Major Response, or CR)
- Patients who received additional anti-tumor therapy following discontinuation of MEK
inhibitor can be enrolled in this cohort as long as they meet the above criteria.
- Prior Therapy:
- Chemotherapy:
- Participant must have received their last dose of myelosuppressive
anticancer chemotherapy at least 21 days prior to study enrollment or at
least 42 days if nitrosourea.
- Monoclonal antibody treatment and agents with known prolonged half-lives:
- Patient must have recovered from any acute toxicity potentially related to
the agent and received their last dose of the agent ≥ 28 days prior to study
enrollment.
- Alternative MEK inhibitor:
- Participant must have received their last dose of MEKi (excluding
mirdametinib) at least 3 weeks prior to study enrollment.
- XRT/External Beam Irradiation including Protons:
- Participant must have had their last fraction of radiation ≥ 3 months prior
to study enrollment.
- Note that for this cohort, there are no limitations on number of prior treatment
regimens and participants who have received craniospinal radiation are eligible.
Exclusion Criteria: Phase 1 and Phase 2, All Cohorts
- Participants whose tumor on central review is any of the following:
- High-grade (WHO III or IV)
- Subependymal giant cell astrocytoma
- Ependymoma
- Histone H3 K27M/K28M or G34/G35-mutant
- BRAF V600 mutant
- NTRK1/2/3, ALK, or ROS1 fusion-positive
- IDH 1/2 mutant
- Participant who is currently receiving any other anticancer or investigational agents
(^11C-methionine allowed) or still recovering from acute toxicity potentially related
to the agent.
- Ophthalmologic Conditions
- Patients with central serous retinopathy
- Patients with retinal vein occlusion or retinal detachment
- Patients with uncontrolled glaucoma
- If checking pressure is clinically indicated and feasible per patient's age
and ability to complete exam, patients with IOP > 22 mmHg or ULN adjusted by
age are not eligible
- Participants with other clinically significant medical disorders (i.e. serious
infections or significant cardiac, pulmonary, hepatic, psychiatric, or other organ
dysfunction) that in the investigator's judgement could compromise their ability to
tolerate or absorb protocol therapy or would interfere with the study procedures or
results.
- Sexually active patients of reproductive potential who have not agreed to use an
effective contraceptive method for the duration of their study participation and for
16 weeks after stopping study therapy are not eligible.
- Participants are excluded if unable to comply with protocol guidelines.