The abstract and poster describe initial clinical data across the larotrectinib program for all patients with TRK fusion primary CNS cancers. The cases include three patients with glioblastoma: one patient treated under an expanded access protocol and two patients treated in the ongoing Phase 2 NAVIGATE trial. In the cases described, larotrectinib showed preliminary evidence of anti-tumor activity. The expanded access patient, described in detail in the abstract, had progressed through prior radiation, temozolomide and bevacizumab and demonstrated a brief mixed radiographic response on larotrectinib in the context of a molecularly complex tumor (select regions of the tumor harbored a TRK fusion, while others did not). The two patients treated in NAVIGATE, described in the poster, were enrolled following progression on chemoradiation and temozolomide (both cases) and bevacizumab (one case). The NAVIGATE patients remain on therapy at four months with radiographic evidence of treatment effect, as of a
“Glioblastomas have historically defied rational targeted therapy approaches, so we are encouraged that larotrectinib may have a role in treating TRK fusion presentations of this devastating disease. We hope these early data lead to increased molecular profiling and referrals to appropriate clinical trials,” said
Abstracts from the AACR Annual Meeting 2017 are available online on the conference website.
The details of the poster presentation are as follows:
Date: April 5, 2017,
Title: Potential role of larotrectinib (LOXO-101), a selective pan-TRK inhibitor, in NTRK fusion-positive recurrent glioblastoma
Abstract Code: LB-302
Poster Board Number: 10
Session Location: Poster Section 34
About Larotrectinib (LOXO-101)
Larotrectinib (LOXO-101) is a potent, oral and selective investigational new drug in clinical development for the treatment of patients with cancers that harbor abnormalities involving the tropomyosin receptor kinases (TRKs). Growing research suggests that the NTRK genes, which encode for TRKs, can become abnormally fused to other genes, resulting in growth signals that can lead to cancer in many sites of the body. In an ongoing Phase 1 clinical trial, larotrectinib has demonstrated encouraging preliminary efficacy. Larotrectinib is also being evaluated in the NAVIGATE global Phase 2 multi-center basket trial in patients with solid tumors that harbor TRK gene fusions, and the SCOUT Phase 1/2 trial in pediatric patients, including patients with advanced cancer, TRK gene fusions and infantile fibrosarcoma. Larotrectinib has been granted Breakthrough Therapy Designation and Rare Pediatric Disease Designation by the U.S. FDA. For additional information about the larotrectinib clinical trials, please refer to www.clinicaltrials.gov. Interested patients and physicians can contact the Loxo Oncology Physician and Patient Clinical Trial Hotline at 1-855-NTRK-123 or visit www.loxooncologytrials.com.
About Loxo Oncology
Loxo Oncology is a biopharmaceutical company innovating the development of highly selective medicines for patients with genetically defined cancers. Our pipeline focuses on cancers that are uniquely dependent on single gene abnormalities, such that a single drug has the potential to treat the cancer with dramatic effect. We believe that the most selective, purpose-built medicines have the highest probability of maximally inhibiting the intended target, thereby delivering best-in-class disease control and safety. Our management team seeks out experienced industry partners, world-class scientific advisors and innovative clinical-regulatory approaches to deliver new cancer therapies to patients as quickly and efficiently as possible. For more information, please visit the company's website at www.loxooncology.com.
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