E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Adult patients (age >17 years) with (mosaic) NF1 with inoperable symptomatic plexiform neurofibromas |
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E.1.1.1 | Medical condition in easily understood language |
Adult patients (age >17 years) with (mosaic) NF1 with inoperable symptomatic plexiform neurofibromas |
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E.1.1.2 | Therapeutic area | Diseases [C] - Nervous System Diseases [C10] |
MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 20.0 |
E.1.2 | Level | PT |
E.1.2 | Classification code | 10029267 |
E.1.2 | Term | Neurofibroma |
E.1.2 | System Organ Class | 10029104 - Neoplasms benign, malignant and unspecified (incl cysts and polyps) |
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E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 20.0 |
E.1.2 | Level | LLT |
E.1.2 | Classification code | 10029270 |
E.1.2 | Term | Neurofibromatosis, type 1 (von Recklinghausen's disease) |
E.1.2 | System Organ Class | 100000004850 |
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E.1.3 | Condition being studied is a rare disease | Yes |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
Response to trametinib treatment defined as a tumor volume decreases from baseline of ≥20%, monitored by using volumetric MRI analysis |
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E.2.2 | Secondary objectives of the trial |
Patient reported outcomes of pain and disability and quality of life The effect of trametinib on disfigurement Safety and tolerability of trametinib The duration of response The incidence of surgical interventions |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
1. Patient with (mosaic) NF1 2. Patients with a clinically significant symptomatic plexiform neurofibroma (PNF), such as (but not limited to) head and neck lesions that could compromise the airway or great vessels, brachial or lumbar plexus lesions that could cause nerve compression and loss of function, lesions that could result in major deformity (e.g., orbital lesions) or are significantly disfiguring, lesions of the extremity that cause limb hypertrophy or loss of function, and painful lesions. This will be determined by the treating physician. 3. Signed, written informed consent 4. Age: 18 or higher 5. Karnofsky performance level of ≥70% 6. No standard treatment options = inoperable PNF PNF that cannot be surgically completely removed without risk for substantial morbidity due to invasiveness, high vascularity or encasement of, or close proximity to, vital structures of the PNF. 7. At least one measurable PNF, defined as a well-demarcated lesion of at least 3 cm measured in one dimension. 8. Able to swallow and retain orally administered medication. 9. Female Subjects of Childbearing Potential must have negative pregnancy test within 7 days prior study treatment and agrees to use highly effective contraception 10. Normal hematological function: Hemoglobin (Hb)≥6 mmol/l, absolute neutrophil count (ANC)≥1.5x109/l, and platelets≥100x109/l 11. Normal hepatic function: bilirubin <1.5x the upper limit of normal (UNL), unless gilbert then: bilirubin <3xUNL and AST/ALT <5xUNL 12. Normal renal function: creatinine <1.5xUNL |
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E.4 | Principal exclusion criteria |
1. Prior treatment with MEK inhibitor(s) 2. Inability to undergo MRI and/or contraindication for MRI examinations 3. History of a malignancy within 5 years of inclusion, except squamous cell carcinoma of the skin, cervical premalignant lesions and other curatively treated malignancy 4. Prior radiotherapy less than 6 weeks prior to enrollment 5. Prior major surgery less than 4 weeks prior to enrollment 6. An investigational agent within the past 30 days. 7. Enzyme-inducing anticonvulsants, anti-coagulants (including platelet aggregation inhibitors) or other prohibited medication(s) or requirement for prohibited medications 8. Left ventricular dysfunction, New York Heart Association Class II, III, or IV heart failure, acute coronary syndrome within the past 6 months, clinically significant uncontrolled arrhythmias, and uncontrolled hypertension. 9. A history of retinal vein occlusion (RVO) or predisposing factors for RVO, including uncontrolled glaucoma or ocular hypertension, uncontrolled hypertension, uncontrolled diabetes mellitus, or a history of hyperviscosity or hypercoagulability syndromes 10. Risk factors for gastrointestinal perforation, including history of diverticulitis, metastases to the gastrointestinal tract and concomitant use of medications with a recognized risk of gastrointestinal perforation 11. Any evidence of severe or uncontrolled systemic disease, active infection, active bleeding diatheses, or renal transplant, including any patient known to have hepatitis B, hepatitis C, or human immunodeficiency virus (HIV) will be excluded. 12. Refractory nausea and vomiting, chronic gastrointestinal diseases (e.g., inflammatory bowel disease), or significant bowel resection that would preclude adequate absorption. 13. Any serious and/or unstable pre-existing medical disorder, psychiatric disorder, or other conditions that could interfere with subject’s safety 14. Known severe hypersensitivity to trametinib or any excipient of trametinib or history of allergic reactions attributed to compounds of similar chemical or biologic composition to trametinib 15. Pregnant, lactating or actively breastfeeding female subjects |
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E.5 End points |
E.5.1 | Primary end point(s) |
Response evaluation will be based on up to three selected most clinically relevant PN which will be followed by volumetric MRI analysis. Response is assessed at the time of follow-up MRI scans which are performed every 24 weeks. For the purpose of determining the level of response, measurements from the follow-up scans are compared to the tumor size in the pretreatment MRI scan using volumetric data analysis. • Objective Response (OR): A ≥20% reduction in the sum of the volume of all index lesions • Stable Disease (SD): A <20% increase and <20% reduction in the sum of the volume of all index lesions. • Progressive Disease (PD): A ≥20% increase in the volume of at least one of the index PN compared to the pretreatment volume measured prior to the start of the current treatment phase. The appearance of new discrete subcutaneous neurofibromas does not qualify for disease progression. Worsening of existing symptoms or the appearance of new symptoms that persist for more than 7 days and that are felt to be definitely related to the PN should be evaluated by repeating the MRI.
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
Response is assessed at the time of follow-up MRI scans which are performed every 24 weeks. |
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E.5.2 | Secondary end point(s) |
NF1 patients with PNF derive clinical benefit from trametinib treatment: • Patient reported outcomes of pain and disability and quality of life: o Numeric (pain) rating scale (NRS) o Pain Interference (PROMIS) o QLQ – SF36 • Regular photos will be taken every 24 weeks to judge the effect of trametinib on disfigurement. • Adverse events reporting according to CTCAEv5.0 • Time to first significant progression defined as >20% volumetric growth of the index lesion(s) • Incidence of surgical interventions
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
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E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | No |
E.6.2 | Prophylaxis | No |
E.6.3 | Therapy | Yes |
E.6.4 | Safety | Yes |
E.6.5 | Efficacy | Yes |
E.6.6 | Pharmacokinetic | No |
E.6.7 | Pharmacodynamic | No |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | No |
E.6.10 | Pharmacogenetic | No |
E.6.11 | Pharmacogenomic | No |
E.6.12 | Pharmacoeconomic | No |
E.6.13 | Others | No |
E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | No |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | No |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | Yes |
E.7.3 | Therapeutic confirmatory (Phase III) | No |
E.7.4 | Therapeutic use (Phase IV) | No |
E.8 Design of the trial |
E.8.1 | Controlled | No |
E.8.1.1 | Randomised | No |
E.8.1.2 | Open | Yes |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | No |
E.8.1.5 | Parallel group | No |
E.8.1.6 | Cross over | No |
E.8.1.7 | Other | No |
E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | No |
E.8.2.2 | Placebo | No |
E.8.2.3 | Other | No |
E.8.3 |
The trial involves single site in the Member State concerned
| Yes |
E.8.4 | The trial involves multiple sites in the Member State concerned | No |
E.8.5 | The trial involves multiple Member States | No |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | No |
E.8.6.2 | Trial being conducted completely outside of the EEA | No |
E.8.7 | Trial has a data monitoring committee | No |
E.8.8 |
Definition of the end of the trial and justification where it is not the last
visit of the last subject undergoing the trial
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E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | |
E.8.9.1 | In the Member State concerned months | |
E.8.9.1 | In the Member State concerned days | |