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Trade names | Rozlytrek |
Other names | RXDX-101, NMS-E628 |
AHFS/Drugs.com | Monograph |
MedlinePlus | a619049 |
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Routes of administration | By mouth |
Drug class | Antineoplastic agent |
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Formula | C31H34F2N6O2 |
Molar mass | 560.650 g·mol−1 |
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Entrectinib, sold under the brand name Rozlytrek, is an anti-cancer medication used to treat ROS1-positive non-small cell lung cancer and NTRK fusion-positive solid tumors. [5] It is a selective tyrosine kinase inhibitor (TKI), of the tropomyosin receptor kinases (TRK) A, B and C, C-ros oncogene 1 (ROS1) and anaplastic lymphoma kinase (ALK). [5]
The most common side effects include tiredness, constipation, dysgeusia (taste disturbances), edema (swelling with fluid retention), dizziness, diarrhea, nausea (feeling sick), dysesthesia (unpleasant and abnormal feeling when touched), dyspnea (difficulty breathing), anemia (low red blood cell count), increased weight, increased blood creatinine (possible sign of kidney problems), pain, cognitive disorders (problems with ability to think, learn and remember), vomiting, cough, and fever. [6] [8]
It was approved for medical use in the United States in August 2019, [8] [9] [10] in Australia in May 2020, [1] and in the European Union in July 2020. [6]
In the US, entrectinib is indicated to treat patients whose cancers are ROS1-positive (have a specific genetic feature (biomarker)). [5] It is to be used in those with solid tumors that: [11]
Entrectinib is not approved for use in those less than twelve years of age. [5] [6] [11]
In the European Union, entrectinib as monotherapy is indicated for the treatment of adults and adolescents twelve years of age and older with solid tumours expressing a neurotrophic tyrosine receptor kinase (NTRK) gene fusion, [6]
It is also indicated for the treatment of adults with ROS1 positive, advanced non small cell lung cancer (NSCLC) not previously treated with ROS1 inhibitors. [6]
The common side effects of entrectinib include fatigue, constipation, dysgeusia, edema, dizziness, diarrhea, nausea, dysesthesia, dyspnea, myalgia, cognitive impairment, weight gain, cough, vomiting, fever, arthralgia and vision disorders. [8]
The most serious side effects of entrectinib are congestive heart failure, central nervous system effects, skeletal fractures, hepatotoxicity, hyperuricemia, QT prolongation and vision disorders. [8]
In the U.S., entrectinib has orphan drug designation and rare pediatric disease designation for the treatment of neuroblastoma and orphan drug designation for treatment of TrkA-, TrkB-, TrkC-, ROS1- and ALK-positive non-small cell lung cancer (NSCLC) and metastatic colorectal cancer (mCRC). [12] [ failed verification ] It has an EU orphan designation for neuroblastoma. [13] FDA approved entrectinib for people with ROS1-positive, metastatic non-small cell lung cancer and NTRK gene fusion-positive solid tumours. [14] It is first FDA-approved treatment designed to target both ROS1 and NTRK that also shows response in cancer that has spread to the brain. [15] In June 2019, the Japanese Ministry of Health, Labour and Welfare (MHLW) approved the agent for the treatment of adult and pediatric patients with NTRK fusion–positive, advanced recurrent solid tumors. [16]
The U.S. Food and Drug Administration (FDA) approved entrectinib based on the evidence from four clinical trials of 355 patients with various types of solid tumors: Trial 1 (EudraCT 2012-000148-88), Trial 2 (NCT02097810), Trial 3 (NCT02568267), [17] and Trial 4 (NCT02650401). [18] The trials were conducted in the United States, Europe and Asia/Pacific region. [18] [11]
The FDA granted entrectinib accelerated approval, priority review, breakthrough therapy, and orphan drug designation. [8] The approval of Rozlytrek was granted to Genentech, Inc. [8]
The process of tumorigenesis frequently involves protein kinase activation events, which can result from either mutations, or chromosomal rearrangements. [19] [20] Gene rearrangements, leading to the expression of constitutively activated fusion tyrosine kinase receptors, have been increasingly identified as a common feature of malignancies over the last three decades, and success has been demonstrated using these rearrangements as targets for drug development. [20] [21]
The expression of such gene fusions in a tumor can create a phenomenon termed 'oncogene addiction' in which the tumor becomes dependent on signaling by the aberrant kinase pathway, thus rendering its survival and continued proliferation exquisitely sensitive to targeted inhibition with small molecule tyrosine kinase inhibitor drugs. [20] Expression of the proteins encoded by these tyrosine kinase fusion genes can, in most cases, be shown to function independently as oncogenic drivers, capable of activating critical downstream pathways involved in the malignant phenotype, resulting in transformation of cells in vitro. [20] Some of the most important kinases that have been shown to undergo rearrangement in human cancers include the anaplastic lymphoma kinase (ALK), ROS1 kinase, and the neurotrophic receptor tyrosine kinases (NTRKs). [20] [21] [22] [23]
Entrectinib is a selective tyrosine kinase inhibitor with specificity, at low nanomolar concentrations, for all of three Trk proteins (encoded by the NTRK1, 2, and 3 genes, respectively) as well as the ROS1, and ALK receptor tyrosine kinases. [24] The drug is orally administered, once daily, and is being studied[ when? ] in patients whose tumors have been shown to have fusions in NTRK1/2/3, ALK, or ROS1. [25] As a ROS1 inhibitor, entrectinib has demonstrated in cellular anti-proliferative studies to have a 36-fold greater potency against ROS1 as compared with another commercially available ROS1 inhibitor, crizotinib. [26]
Target | TrkA | TrkB | TrkC | ROS1 | ALK |
---|---|---|---|---|---|
IC50 (nM) | 1.7 | 0.1 | 0.1 | 0.2 | 1.6 [27] |
Entrectinib has also demonstrated in-vitro efficacy against potential Trk inhibitor resistance mutations such as NTRK1 F589L, NTRK1 V573M, NTRK1 G667S. [26]
Entrectinib is currently[ when? ] being tested in a global phase II basket clinical trial called STARTRK-2. [17] Interim results from two ongoing phase 1 trials have been reported at the 2016 AACR American Association for Cancer Research Conference in April 2016: [26] among the patients treated with entrectinib, four patients had tumors harboring NTRK fusions, including patients with non-small cell lung cancer (NSCLC), mCRC, salivary gland cancer, and astrocytoma.[ citation needed ]
The preliminary results seen with entrectinib in the phase I studies of patients with NTRK/ROS1/ALK fusions have led to the initiation of an open-label, multicenter, global, phase II basket study [17] to examine the use of entrectinib in patients having tumors with these gene rearrangements. The study will enroll any patient with a solid tumor having evidence of an NTRK/ROS1/ALK fusion, assuming the patient meets all other entry criteria. Examples of such tumor types include NSCLC, mCRC, salivary gland cancer, sarcoma, melanoma, thyroid cancer, glioblastoma, astrocytoma, cholangiocarcinoma, lymphoma and others.[ citation needed ]
It was approved for medical use in the United States in August 2019, [10] and in Australia in May 2020. [1]
Investigations of entrectinib were conducted by Ignyta Pharmaceuticals. [28] On 21 December 2017, Roche announced plans to buy Ignyta for $1.7 billion. [29]
Entrectinib is the International nonproprietary name (INN). [30]
Targeted therapy or molecularly targeted therapy is one of the major modalities of medical treatment (pharmacotherapy) for cancer, others being hormonal therapy and cytotoxic chemotherapy. As a form of molecular medicine, targeted therapy blocks the growth of cancer cells by interfering with specific targeted molecules needed for carcinogenesis and tumor growth, rather than by simply interfering with all rapidly dividing cells. Because most agents for targeted therapy are biopharmaceuticals, the term biologic therapy is sometimes synonymous with targeted therapy when used in the context of cancer therapy. However, the modalities can be combined; antibody-drug conjugates combine biologic and cytotoxic mechanisms into one targeted therapy.
Tropomyosin receptor kinase C (TrkC), also known as NT-3 growth factor receptor, neurotrophic tyrosine kinase receptor type 3, or TrkC tyrosine kinase is a protein that in humans is encoded by the NTRK3 gene.
Trk receptors are a family of tyrosine kinases that regulates synaptic strength and plasticity in the mammalian nervous system. Trk receptors affect neuronal survival and differentiation through several signaling cascades. However, the activation of these receptors also has significant effects on functional properties of neurons.
Anaplastic lymphoma kinase (ALK) also known as ALK tyrosine kinase receptor or CD246 is an enzyme that in humans is encoded by the ALK gene.
Proto-oncogene tyrosine-protein kinase ROS is an enzyme that in humans is encoded by the ROS1 gene.
ETV6-NTRK3 gene fusion is the translocation of genetic material between the ETV6 gene located on the short arm of chromosome 12 at position p13.2 and the NTRK3 gene located on the long arm of chromosome 15 at position q25.3 to create the (12;15)(p13;q25) fusion gene, ETV6-NTRK3. This new gene consists of the 5' end of ETV6 fused to the 3' end of NTRK3. ETV6-NTRK3 therefore codes for a chimeric oncoprotein consisting of the helix-loop-helix (HLH) protein dimerization domain of the ETV6 protein fused to the tyrosine kinase domain of the NTRK3 protein. The ETV6 gene codes for the transcription factor protein, ETV6, which suppresses the expression of, and thereby regulates, various genes that in mice are required for normal hematopoiesis as well as the development and maintenance of the vascular network. NTRK3 codes for Tropomyosin receptor kinase C a NT-3 growth factor receptor cell surface protein that when bound to its growth factor ligand, neurotrophin-3, becomes an active tyrosine kinase that phosphorylates tyrosine residues on, and thereby stimulates, signaling proteins that promote the growth, survival, and proliferation of their parent cells. The tyrosine kinase of the ETV6-NTRK3 fusion protein is dysfunctional in that it is continuously active in phosphorylating tyrosine residues on, and thereby continuously stimulating, proteins that promote the growth, survival, and proliferation of their parent cells. In consequence, these cells take on malignant characteristics and are on the pathway of becoming cancerous. Indeed, the ETV6-NTRK3 fusion gene appears to be a critical driver of several types of cancers. It was originally identified in congenital fibrosarcoma and subsequently found in mammary secretory carcinoma, mammary analogue secretory carcinoma of salivary glands, salivary gland–type carcinoma of the thyroid, secretory carcinoma of the skin, congenital fibrosarcoma, congenital mesoblastic nephroma, rare cases of acute myelogenous leukemia, ALK-negative Inflammatory myofibroblastic tumour, cholangiocarcinoma, and radiation-induced papillary thyroid carcinoma.
Treatment of lung cancer refers to the use of medical therapies, such as surgery, radiation, chemotherapy, immunotherapy, percutaneous ablation, and palliative care, alone or in combination, in an attempt to cure or lessen the adverse impact of malignant neoplasms originating in lung tissue.
Adenocarcinoma of the lung is the most common type of lung cancer, and like other forms of lung cancer, it is characterized by distinct cellular and molecular features. It is classified as one of several non-small cell lung cancers (NSCLC), to distinguish it from small cell lung cancer which has a different behavior and prognosis. Lung adenocarcinoma is further classified into several subtypes and variants. The signs and symptoms of this specific type of lung cancer are similar to other forms of lung cancer, and patients most commonly complain of persistent cough and shortness of breath.
Crizotinib, sold under the brand name Xalkori among others, is an anti-cancer medication used for the treatment of non-small cell lung carcinoma (NSCLC). Crizotinib inhibits the c-Met/Hepatocyte growth factor receptor (HGFR) tyrosine kinase, which is involved in the oncogenesis of a number of other histological forms of malignant neoplasms. It also acts as an ALK and ROS1 inhibitor.
ALK inhibitors are anti-cancer drugs that act on tumours with variations of anaplastic lymphoma kinase (ALK) such as an EML4-ALK translocation. They fall under the category of tyrosine kinase inhibitors, which work by inhibiting proteins involved in the abnormal growth of tumour cells. All the current approved ALK inhibitors function by binding to the ATP pocket of the abnormal ALK protein, blocking its access to energy and deactivating it. A majority of ALK-rearranged NSCLC harbour the EML4-ALK fusion, although as of 2020, over 92 fusion partners have been discovered in ALK+ NSCLC. For each fusion partner, there can be several fusion variants depending on the position the two genes were fused at, and this may have implications on the response of the tumour and prognosis of the patient.
ALK positive lung cancer is a primary malignant lung tumor whose cells contain a characteristic abnormal configuration of DNA wherein, most frequently, the echinoderm microtubule-associated protein-like 4 (EML4) gene is fused to the anaplastic lymphoma kinase (ALK) gene. Less frequently, there will be novel translocation partners for the ALK gene, in place of EML4. This abnormal gene fusion leads to the production of a protein that appears, in many cases, to promote and maintain the malignant behavior of the cancer cells.
Ceritinib is a prescription-only drug used for the treatment of non-small cell lung cancer (NSCLC). It was developed by Novartis and received FDA approval for use in April 2014.
Alectinib (INN), sold under the brand name Alecensa, is an anticancer medication that is used to treat non-small-cell lung cancer (NSCLC). It blocks the activity of anaplastic lymphoma kinase (ALK). It is taken by mouth. It was developed by Chugai Pharmaceutical Co. Japan, which is part of the Hoffmann-La Roche group.
Mammary analogue secretory carcinoma (MASC), also termed MASCSG, is a salivary gland neoplasm. It is a secretory carcinoma which shares the microscopic pathologic features with other types of secretory carcinomas including mammary secretory carcinoma, secretory carcinoma of the skin, and salivary gland–type carcinoma of the thyroid. MASCSG was first described by Skálová et al. in 2010. The authors of this report found a chromosome translocation in certain salivary gland tumors, i.e. a (12;15)(p13;q25) fusion gene mutation. The other secretory carcinoma types carry this fusion gene.
Lorlatinib, sold under the brand name Lorbrena in the United States, Canada, and Japan, and Lorviqua in the European Union, is an anti-cancer medication used for the treatment of non-small cell lung cancer. It is an orally administered inhibitor of anaplastic lymphoma kinase (ALK) and C-ros oncogene 1 (ROS1), two enzymes that play a role in the development of cancer. It was developed by Pfizer.
Selpercatinib, sold under the brand name Retevmo among others, is a medication for the treatment of cancers in people whose tumors have an alteration in a specific gene. It is taken by mouth.
Pralsetinib, sold under the brand name Gavreto, is a medication approved for RET mutation-positive medullary thyroid cancer (MTC) and RET fusion-positive differentiated thyroid cancer (DTC) refractory to radioactive iodine (RAI) therapy. Pralsetinib is a tyrosine kinase inhibitor. It is taken by mouth.
RET inhibitors are targeted therapies that act on tumors with activating alterations in the RET proto-oncogene, such as point mutations or fusions. They fall under the category of the tyrosine kinase inhibitors, which work by inhibiting proteins involved in the abnormal growth of cancer cells. Existing molecules fall in two main categories: the older multikinase inhibitors and the more recent selective inhibitors. Although RET alterations are found at low frequency in a broad range of tumors, the three main indications for RET inhibitors today are non-small cell lung cancer, medullary thyroid cancer and papillary thyroid cancer. As of 2020, up to 48 fusion partners have been catalogued in NSCLC rearrangements, with KIF5B and CCDC6 being the most prevalent. At least 10 different fusion variants have been described for KIF5B-RET, each with different breakpoints within the partner gene, but unclear clinical impact as of 2018.
Lipofibromatosis-like neural tumor (LPF-NT) is an extremely rare soft tissue tumor first described by Agaram et al in 2016. As of mid-2021, at least 39 cases of LPF-NT have been reported in the literature. LPF-NT tumors have several features that resemble lipofibromatosis (LPF) tumors, malignant peripheral nerve sheath tumors, spindle cell sarcomas, low-grade neural tumors, peripheral nerve sheath tumors, and other less clearly defined tumors; Prior to the Agaram at al report, LPF-NTs were likely diagnosed as variants or atypical forms of these tumors. The analyses of Agaram at al and subsequent studies uncovered critical differences between LPF-NT and the other tumor forms which suggest that it is a distinct tumor entity differing not only from lipofibromatosis but also the other tumor forms.
Repotrectinib, sold under the brand name Augtyro, is an anti-cancer medication used for the treatment of non-small cell lung cancer. It is taken by mouth. Repotrectinib is an inhibitor of proto-oncogene tyrosine-protein kinase ROS1 (ROS1) and of the tropomyosin receptor tyrosine kinases (TRKs) TRKA, TRKB, and TRKC.
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