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Selumetinib granule formulation

Phase 1

Neurofibromatosis Type 1 | Small molecule | Other |AstraZeneca PLC|Last Updated: Aug 13, 2026

Target and mechanism

Molecular targetMAP2K2, MAP2K1
Target classInhibitor
ModalitySmall molecule

Success Probability

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Market & Valuation

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Trial Design

UNCONTROLLED
Total Trials1
Total Enrollment36

FDA Designations

No designations recorded

Clinical trial landscape

Selumetinib granule formulation · 1 trial · 1 indication

Phase 1 1
NCT05309668Pharmacokinetics, Safety and Efficacy of the Selumetinib Granule Formulation in Children Aged ≥1 to <7 Years With NF1-related Symptomatic, Inoperable PNNeurofibromatosis Type 1
ACTIVE NOT_RECRUITING36 Analytics
PHASE1ACTIVE NOT_RECRUITING
Pharmacokinetics, Safety and Efficacy of the Selumetinib Granule Formulation in Children Aged ≥1 to <7 Years With NF1-related Symptomatic, Inoperable PN
Neurofibromatosis Type 1Unlock trial analytics

Study Endpoints

Primary Endpoints

Selumetinib AUC0-12 Derived After Single Dose Administration
Pre-dose and 1, 2, 3, 4, 6, 8 and 10-12 hours after selumetinib single dose on the first day of study treatment (Cycle 1 Day 1) (each cycle is 28 days)

To determine the pharmacokinetics of selumetinib after administration of the selumetinib granule formulation

Adverse Events Graded by CTCAE Ver 5.0
from screening until 30 days after last dose

To assess the safety and tolerability of the selumetinib granule formulation.

Secondary Endpoints

Palatability Using the Parent-reported Observer Palatability Questionnaire
Twice daily (morning and evening), from the first day of study treatment (Cycle 1 Day 1) for one week, from Cycle 7 Day 1 for one week (each cycle is 28 days)
Selumetinib and N-desmethyl Selumetinib AUC0-12 Derived After Single and Multiple Dose Administration
Pre-dose and 1, 2, 3, 4, 6, 8, 10-12 and 18-24 hours after selumetinib single dose on the first day of study treatment (Cycle 1 Day 1). Pre-dose, 1, 2, 3, 4, 6, 8, and 10-12 hours post-dose on Cycle 2 Day 1 (each cycle is 28 days)
Selumetinib and N-desmethyl Selumetinib Cmax Derived After Single and Multiple Dose Administration
Pre-dose and 1, 2, 3, 4, 6, 8, 10-12 and 18-24 hours after selumetinib single dose on the first day of study treatment (Cycle 1 Day 1). Pre-dose, 1, 2, 3, 4, 6, 8, and 10-12 hours post-dose on Cycle 2 Day 1 (each cycle is 28 days)
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Selumetinib single armEXPERIMENTALThis study consists of a screening period (up to 28 days), a treatment period (25 cycles) and a long term safety follow-up for participants until they are 5 years old or commence an alternative systemic NF1-PN treatment, whichever is the earlier. Participants may continue treatment with selumetinib throughout the long term safety follow-up as long as they are considered to be receiving clinical benefit in the opinion of their Investigator. A safety follow up assessment will be performed 30 days after the last dose of study intervention for all study participants.

Interventions

NameTypeDescription
Selumetinib granule formulationDRUGSelumetinib granule formulation will be administered using BSA-based dosing. The granule formulation dose schema to be used in the study will be established in the dose finding phase. At enrolment participants must have a BSA within the range 0.40 to 1.09 m2; once participants attain a BSA between 1.10 and 1.29 m2 they will be encouraged to transition to the capsule formulation, if feasible, although all participants must remain on the granule formulation until after they have completed their third cycle of treatment.
Selumetinib capsule formulationDRUGSelumetinib capsule formulation will be administered using BSA-based dosing. Once participants attain a BSA between 1.10 and 1.29 m2 they will be encouraged to transition to the capsule formulation, if feasible, although all participants must remain on the granule formulation until after they have completed their third cycle of treatment.
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Eligibility Criteria

Age Range1 Year to 6 Years
SexALL
Healthy VolunteersNo
Study Sites16

Inclusion Criteria: 1. Male and female participants aged ≥ 1 to \< 7 years of age at the time their legally authorised representative (parent or guardian) signs the informed consent. 2. All study participants must be diagnosed with NF1 with symptomatic inoperable PN as defined in protocol. 3. Parti...

Countries:United StatesGermanyItalyJapanNetherlandsRussiaSpain
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Recent Changes (Last 90 Days)

LOWAug 14, 2026NCT05309668lastUpdatePostDate: changed
LOWAug 14, 2026NCT05309668lastUpdatePostDate: changed
LOWAug 14, 2026NCT05309668lastUpdatePostDate: changed
LOWJun 9, 2026NCT05309668lastUpdatePostDate: changed
LOWJun 9, 2026NCT05309668lastUpdatePostDate: changed
LOWJun 9, 2026NCT05309668lastUpdatePostDate: changed
LOWJun 9, 2026NCT05309668lastUpdatePostDate: changed

Frequently asked questions about Selumetinib granule formulation

What is Selumetinib granule formulation used for?

Selumetinib granule formulation is being studied for the treatment of Neurofibromatosis Type 1 (NF1) in children aged 1 to under 7 years with symptomatic, inoperable plexiform neurofibromas. It is an investigational small molecule kinase inhibitor currently in Phase 1 clinical development.

What does Selumetinib granule formulation target?

Selumetinib granule formulation is a small molecule kinase inhibitor, belonging to the -tinib class of drugs. It works by inhibiting specific kinase enzymes involved in cell signaling pathways. The drug is being evaluated for its pharmacokinetics, safety, and efficacy in pediatric patients with NF1-related plexiform neurofibromas.

Who is developing Selumetinib granule formulation?

Selumetinib granule formulation is being developed by AstraZeneca PLC, a biopharmaceutical company listed on the stock exchange under the ticker AZN. The company is conducting clinical trials to evaluate the drug's safety and effectiveness in young children with Neurofibromatosis Type 1.

What phase is Selumetinib granule formulation in?

Selumetinib granule formulation is in Phase 1 clinical development. It is an investigational drug and has not been approved by regulatory authorities. The ongoing Phase 1 trial is actively enrolling participants, though recruitment is not yet complete, to assess the drug's pharmacokinetics, safety, and efficacy.

What clinical trials is Selumetinib granule formulation in?

Selumetinib granule formulation is being studied in a Phase 1 clinical trial with the identifier NCT05309668. This open-label, uncontrolled trial is evaluating the drug in children aged 1 to under 7 years with NF1-related symptomatic, inoperable plexiform neurofibromas. The trial is active but not recruiting and has an enrollment target of 36 participants.

Is Selumetinib granule formulation the same as Selumetinib?

Selumetinib granule formulation is a specific formulation of the drug selumetinib, designed as granules for oral administration. It is being developed for use in young children who may have difficulty swallowing capsules. The granule formulation is being studied separately in a Phase 1 trial for pediatric patients with Neurofibromatosis Type 1.