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A Phase 1 Open Label Study to Assess the Safety, Tolerability, Pharmacokinetics and Efficacy of Selumetinib, a Selective Mitogen Activated Protein Kinase Kinase (MEK) 1 Inhibitor, in Japanese Paediatric Subjects With Neurofibromatosis Type 1 (NF1) and Inoperable and Symptomatic Plexiform Neurofibromas (PN)

A Phase 1 Open Label Study to Assess the Safety, Tolerability, Pharmacokinetics and Efficacy of Selumetinib, a Selective Mitogen Activated Protein Kinase Kinase (MEK) 1 Inhibitor, in Japanese Paediatric Subjects With Neurofibromatosis Type 1 (NF1) and Inoperable and Symptomatic Plexiform Neurofibromas (PN)

Status
Active, not recruiting
Phases
Phase 1
Study type
Interventional
Source
JPRN
Registry ID
JPRN-jRCT2080225326
Enrollment
9
Registered
2020-08-20
Start date
2020-09-01
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Neurofibromatosis Type 1 and Inoperable and Symptomatic Plexiform Neurofibroma

Interventions

investigational material(s) Generic name etc : Selumetinib INN of investigational material : - Therapeutic category code : 129 Other agents affecting peripheral nervous system Dosage and Administrati

Sponsors

AstraZeneca KK
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: - Three years of age or older, and less than or equal to 18 years of age at the time of obtaining informed consent. BSA greater than or equal to 0.55 m2, and able to swallow the whole study drug (capsules) without entire contents unpacked from the capsules. - NF1 and inoperable and symptomatic PN who have PN-related morbidities (symptom and/or complications), as judged by the investigator. - Inoperable PN is defined as PN that cannot be surgically completely removed without risk for substantial morbidity due to encasement of, or close proximity to, vital structures, invasiveness, or high vascularity of the PN. - A PN is defined as a neurofibroma that has grown along the length of a nerve and may involve multiple fascicles and branches. A spinal PN involves two or more levels with connection between the levels or extending laterally along the nerve. - In addition to PN, subjects must have at least 1 other diagnostic criterion for NF1 as follows: 1.Six or more cafe-au-lait macules >5 mm in greatest diameter in pre-pubertal individuals and >15 mm in greatest diameter in post-pubertal individuals. 2.Freckling in the axillary or inguinal regions. 3.Optic glioma. 4.Two or more Lisch nodules (iris hamartomas). 5.A distinctive osseous lesion such as sphenoid dysplasia or tibial pseudarthrosis. 6.A first-degree relative with NF1. - At least one measurable typical or nodular PN in principle, defined as a lesion of at least 3 cm measured in one dimension. - Adequate organ/haematological function

Exclusion criteria

Exclusion criteria: - Evidence of malignant peripheral nerve sheath tumour. - Prior malignancy (except for adequately treated basal cell or squamous cell skin cancer, in situ cervical cancer, low grade optic pathway gliomas associated with NF1 which does not require systemic treatment or other cancer from which the subject had been disease free for 2 years or more or which would not have limited survival to <2 years) or other cancer requiring treatment with chemotherapy or radiation therapy. - Clinically significant cardiovascular disease. - Known history of human immunodeficiency virus, serologic status reflecting active hepatitis B virus (HBV) or hepatitis C virus (HCV) infection, or any uncontrolled active systemic infection. - Subjects with clinically significant ophthalmological findings/conditions. - Inability to undergo MRI and/or contraindication for MRI (i.e. prosthesis or orthopaedic or dental braces that would interfere with volumetric analysis of target PN on MRI). - Have refractory nausea and vomiting, chronic gastrointestinal diseases (e.g. inflammatory bowel disease), or significant bowel resection that would adversely affect the absorption/bioavailability of the orally administered study medication. - Receiving supplementation with vitamin E greater than 100% of the daily recommended dose. - Receiving herbal supplements or medications known to be strong inhibitors or inducers of the cytochrome P450 (CYP) 3A4 enzymes unless such products can be safely discontinued at least 14 days before the first dose of study medication.

Design outcomes

Primary

MeasureTime frame
safety pharmacokinetics -

Secondary

MeasureTime frame
efficacy pharmacokinetics -

Countries

none

Contacts

Public ContactKazushige Hibi

Astrazeneka K.K

RD-clinical-information-Japan@astrazeneca.com+81-6-4802-3533

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026