– 94 Percent of All Pediatric Patients Remain on Larotrectinib or Received Surgery with Curative Intent –
– Larotrectinib Demonstrates Central Nervous System Activity with First-Ever TRK Fusion Glioblastoma Response with a TRK Inhibitor –
“Targeted therapy success stories in pediatric oncology are uncommon, and larotrectinib has invigorated the pediatric oncology community,” said
“We are grateful to the children and families who have enabled the development of larotrectinib through their participation in clinical trials,” said
As of a
|TRK Fusion Patients (n=17)*||Patients without TRK Fusions (n=7)|
|Independent Review Committee Assessed Response||Investigator Assessed Response||Investigator Assessed Response|
|Overall Response Rate
(ORR = PR+CR)
(95% CI: 68% – 100%)
(95% CI: 68% – 100%)
|Partial Response (PR)||80%||67%**||0%|
|Complete Response (CR)||13%||27%||0%|
|* 2 patients not evaluable due to having non-measurable disease at baseline.|
|** Includes 2 patients with unconfirmed partial responses as of July 17, 2017, which were subsequently confirmed.|
Among the 17 patients with TRK fusion cancers, 94% either remain on drug or received surgery with curative intent; four patients have been followed greater than one year and 12 have been followed greater than six months.
The larotrectinib adverse event profile is consistent with data previously presented publicly. The most common treatment-related adverse events at the Phase 2 dose included increased liver function tests, neutropenia, and nausea, all largely grade 1.
These data are being presented in a poster session on
About Larotrectinib (LOXO-101)
Larotrectinib 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 analysis of 55 RECIST-evaluable TRK fusion adult and pediatric patients, larotrectinib demonstrated a 75 percent independently-reviewed confirmed overall response rate (ORR) and an 80 percent investigator-assessed confirmed ORR, across many different types of solid tumors. Larotrectinib has been granted Breakthrough Therapy Designation Rare Pediatric Disease Designation and Orphan Drug Designation by the U.S.
About TRK Fusion Cancer
TRK fusions are chromosomal abnormalities that occur when one of the NTRK genes (NTRK1, NTRK2, NTRK3) becomes abnormally connected to another, unrelated gene (e.g. ETV6, LMNA, TPM3). This abnormality results in uncontrolled TRK signaling that can lead to cancer. TRK fusions occur rarely but broadly in various adult and pediatric solid tumors, including appendiceal cancer, breast cancer, cholangiocarcinoma, colorectal cancer, GIST, infantile fibrosarcoma, lung cancer, mammary analogue secretory carcinoma of the salivary gland, melanoma, pancreatic cancer, thyroid cancer, and various sarcomas. TRK fusions can be identified through various diagnostic tests, including targeted next-generation sequencing (NGS), immunohistochemistry (IHC), polymerase chain reaction (PCR), and fluorescent in situ hybridization (FISH). For more information, please visit www.TRKtesting.com.
Forward Looking Statements
This press release contains "forward-looking" statements within the meaning of the safe harbor provisions of the U.S. Private Securities Litigation Reform Act of 1995, including Loxo Oncology’s expectations regarding the timing and success of our clinical trials. Forward-looking statements can be identified by words such as: "anticipate," "intend," "plan," "goal," "seek," "believe," "project," "estimate," "expect," "strategy," "future," "likely," "may," "should," "will" and similar references to future periods. These statements are subject to numerous risks and uncertainties that could cause actual results to differ materially from what we expect. Further information on potential risk factors that could affect our business and its financial results are detailed in our most recent Quarterly Report on Form 10-Q, and other reports as filed from time to time with the Securities and Exchange Commission. We undertake no obligation to publicly update any forward-looking statement, whether written or oral, that may be made from time to time, whether as a result of new information, future developments or otherwise.
Chief Business Officer