A Study of Oral LOXO-292 (Selpercatinib) in Pediatric Participants With Advanced Solid or Primary Central Nervous System (CNS) Tumors

Sponsor: Loxo Oncology, Inc.

Sponsor score: 40
Inactive

ClinicalTrials ID:NCT03899792

Patient View

This open-label, multi-center Phase 1/2 study evaluates oral LOXO-292 in pediatric patients with advanced solid or primary CNS tumors with RET alterations. Phase 1 involves dose escalation to determine MTD/RP2D, followed by Phase 2 dose expansion. Eligible participants must have failed standard therapies, show RET alterations, and meet specific health criteria. LOXO-292 is administered orally.

Patient Parameters

Program Overview

This is an open-label, multi-center Phase 1/2 study of oral LOXO-292 in pediatric participants with an activating rearranged during transfection (RET) alteration and an advanced solid or primary CNS tumor.

Description

This study includes 2 parts: phase 1 (dose escalation) and phase 2 (dose expansion). In phase 1, participants will be enrolled using a rolling 6 dose escalation scheme. The starting dose of LOXO-292 is equivalent to the adult recommended phase 2 dose of 160 milligrams (mg) twice a day (BID). Once the maximum tolerated dose (MTD) and/or recommended phase 2 dose (RP2D) is identified, participants will be enrolled to one of four phase 2 dose expansion cohorts depending on tumor histology and tumor genotype. Cycle length will be 28 days.

Eligibility Criteria

Inclusion Criteria

  • Advanced or metastatic solid or primary CNS tumor which has failed standard of care therapies
  • Evidence of an activating RET gene alteration in the tumor and/or blood
  • Measurable or non-measurable disease
  • Karnofsky (participants 16 years and older) or Lansky (participants younger than 16) performance score of at least 50
  • Participant with primary CNS tumors or cerebral metastases must be neurologically stable for 7 days prior and must not have required increasing doses of steroids within the last 7 days
  • Adequate hematologic, hepatic and renal function.
  • Ability to receive study drug therapy orally or via gastric access
  • Willingness of men and women of reproductive potential to observe conventional and effective birth control

Exclusion Criteria

  • Major surgery within two weeks prior to planned start of LOXO-292
  • Clinically significant, uncontrolled cardiac, cardiovascular disease or history of myocardial infarction within 6 months prior to planned start of LOXO-292
  • Active uncontrolled systemic bacterial, viral, fungal or parasitic infection
  • Clinically significant active malabsorption syndrome
  • Pregnancy or lactation
  • Uncontrolled symptomatic hyperthyroidism or hypothyroidism (i.e. the participant required a modification to current thyroid medication in the 7 days before start of LOXO-292)
  • Uncontrolled symptomatic hypercalcemia or hypocalcemia
  • Known hypersensitivity to any of the components of the investigational agent, LOXO-292 or Ora-Sweet® SF and OraPlus®, for participants who will receive LOXO-292 suspension
  • Prior treatment with a selective RET inhibitor(s) (including investigational selective RET inhibitor[s])

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