A Phase 2b Trial of the MEK 1/2 Inhibitor (MEKi) PD-0325901 in Adult and Pediatric Patients With Neurofibromatosis Type 1 (NF1)-Associated Inoperable Plexiform Neurofibromas (PNs) That Are Causing Significant Morbidity
概览
- 阶段
- 2 期
- 干预措施
- Mirdametinib (PD-0325901) oral capsule or dispersible tablet
- 疾病 / 适应症
- Plexiform Neurofibroma
- 发起方
- SpringWorks Therapeutics, Inc.
- 入组人数
- 114
- 试验地点
- 50
- 主要终点
- Confirmed Objective Response Rate at the End of the Treatment Phase.
- 状态
- 进行中(未招募)
- 最后更新
- 24天前
概览
简要总结
This study evaluates mirdametinib (PD-0325901) in the treatment of symptomatic inoperable neurofibromatosis type-1 (NF1)-associated plexiform neurofibromas (PNs). All participants will receive mirdametinib (PD-0325901). Eligible participants may continue in a long-term follow-up phase.
详细描述
Neurofibromas are non-malignant peripheral nerve sheath tumors, which are classified as plexiform neurofibromas (PNs) if they extend longitudinally along a nerve and involve multiple fascicles. PNs are a major cause of morbidity and disfigurement in individuals with NF1, and as the tumor growth progresses, can cause a multitude of clinical problems including pain and impaired physical function. PNs have the potential to undergo malignant transformation to Malignant Peripheral Nerve Sheet Tumors (MPNST). Mirdametinib (PD-0325901) is an orally delivered, highly selective small-molecule inhibitor of the dual specificity kinases, MEK1 and MEK2 (MAPK/ERK Kinase) which prevents the phosphorylation and subsequent activation of mitogen-activated protein kinase (MAPK). Previous studies of mirdametinib (PD-0325901) demonstrated PN shrinkage and sustained inhibition of pERK. Reduced tumor volume indicated that cell proliferation or cell death may be altered in PNs with administration of mirdametinib (PD-0325901).
研究者
入排标准
入选标准
- •Participant has documented NF1 mutation or a diagnosis of neurofibromatosis type 1 (NF1) using National Institute of Health (NIH) Consensus Conference criteria inclusive of the presence of a plexiform neurofibroma (PN).
- •Participant has a PN that is causing significant morbidity.
- •Participant has a PN that cannot be completely surgically removed.
- •Participant has a target tumor that is amenable to volumetric MRI analysis.
- •Participant is willing to undergo a tumor biopsy pre and post treatment if ≥ 18 years of age.
- •Participant has adequate organ and bone marrow function.
排除标准
- •Participant has abnormal liver function or history of liver disease.
- •Participant has lymphoma, leukemia or any malignancy within the past 5 years (except for resected basal/squamous skin carcinomas without metastases within 3 years).
- •Participant has breast cancer within 10 years.
- •Participant has active optic glioma or other low-grade glioma requiring treatment.
- •Participant has abnormal QT interval corrected or other heart disease within 6 months.
- •Participant has a history of retinal pathology, risk factors for retinal vein occlusion or has a history of glaucoma.
- •Participant has known malabsorption syndrome or gastrointestinal conditions that would impair absorption of mirdametinib (PD-0325901).
- •Participant has received NF1 PN-targeted therapy within 45 days.
- •Participant previously received or is currently receiving therapy with mirdametinib (PD-0325901) or any other MEK1/2 inhibitor.
- •Participant has received radiation therapy within 6 months or has received radiation to the orbit at any time.
研究组 & 干预措施
Mirdametinib (PD-0325901)
Mirdametinib (PD-0325901) capsule or dispersible tablet 2 mg/m\^2 (maximum dose of 4 mg) by mouth twice daily
干预措施: Mirdametinib (PD-0325901) oral capsule or dispersible tablet
结局指标
主要结局
Confirmed Objective Response Rate at the End of the Treatment Phase.
时间窗: Up to 24 months
Response will be determined by a blinded centralized review of volumetric MRI. The confirmed objective response rate (complete or partial response) by the end of Treatment Phase (i.e., Cycle 24) is defined as the proportion of participants who have a confirmed ≥ 20% reduction in target tumor volume as compared to baseline as assessed by a BICR, and the response needs to be confirmed by BICR in a consecutive tumor assessment within 2 - 6 months. Partial response is defined as a ≥ 20% reduction in target tumor volume from baseline. Complete response is defined as the complete resolution of the target tumor.
次要结局
- Percentage of Patients With Treatment-Emergent Adverse Events.(All SAEs and AEs were collected from the time of signing ICF until 30 days after the last dose of study treatment, an average of 1 year and 10 months and up to 3 years and 10 months.)
- Duration of Response (DOR) for Participants Who Meet Criteria for Confirmed Objective Response.(Starting on the onset of confirmed objective response in the Treatment Phase and afterwards on the 15th day of every 4 cycles (each cycle is 28 days) until disease progression or death, whichever comes first, assessed up to approximately 3 years)
- Change From Baseline on Quality of Life (QOL) as Measured by the Pediatric Quality of Life Inventory (PedsQL) at Cycle 13, Acute Version.(Baseline and Cycle 13 (1 cycle = 28 days), up to 12 months)
- Change From Baseline in Pain as Measured by the Numeric Rating Scale-11 (NRS-11) at Cycle 13.(Baseline and Cycle 13 (1 cycle = 28 days), up to 12 months)
- Change From Baseline in Pain as Measured by the Pain Interference Index (PII) at Cycle 13.(Baseline and Cycle 13 (1 cycle = 28 days), up to 12 months)