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"Protein kinase inhibitors"
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For blood and money : billionaires, biotech, and the quest for a blockbuster drug
This book tells the little-known story of how an upstart biotechnology company created a one-in-a-million cancer drug, and how the core team - denied their share of the profits - went and did it again. In this epic saga of money and science, a veteran financial journalist explains how the invention of two of the biggest cancer drugs in history became (for their backers) two of the greatest Wall Street bets of all time. In the multibillion-dollar business of biotech, where pharmaceutical companies, the government, hedge funds, and venture capitalists have spent billions on funding, experimentation, and treatments, a single molecule can stop cancer in its tracks - and make the people who find that rare molecule astonishingly rich. This book follows a small team at a biotech start-up in California, who have found one of these rare molecules. Their compound, known as a BTK inhibitor, seems to work on a vicious type of leukemia. When patients start rising from their hospice beds, the team knows they're onto something big. What follows is a story of genius, pathos, and drama, in which vivid characters navigate a world of corporate intrigue and ambiguous morality. The author's narrative immerses readers in the explosion of biotech start-ups. He describes the scientists, doctors, and investors who are risking everything to develop new, life-saving treatments, and introduces suffering patients for whom the stakes are life-or-death. A gripping nonfiction read, this book illustrates why it's so hard to bring new drugs to market, explains why they are so expensive, and examines how profit-driven venture capitalists are shaping the future of medicine. -- Adapted from publisher's description.
Efficacy and Safety of Nintedanib in Idiopathic Pulmonary Fibrosis
by
Hansell, David M
,
Flaherty, Kevin R
,
Cottin, Vincent
in
Aged
,
Biological and medical sciences
,
Biopsy
2014
In this randomized, placebo-controlled trial, treatment with nintedanib, an intracellular inhibitor of multiple tyrosine kinases, led to a reduced rate of loss of forced vital capacity in patients with idiopathic pulmonary fibrosis.
Idiopathic pulmonary fibrosis is a fatal lung disease characterized by worsening dyspnea and progressive loss of lung function.
1
A decline in forced vital capacity (FVC) is consistent with disease progression and is predictive of reduced survival time.
1
–
6
Idiopathic pulmonary fibrosis is believed to arise from an aberrant proliferation of fibrous tissue and tissue remodeling due to the abnormal function and signaling of alveolar epithelial cells and interstitial fibroblasts.
7
The activation of cell-signaling pathways through tyrosine kinases such as vascular endothelial growth factor (VEGF), fibroblast growth factor (FGF), and platelet-derived growth factor (PDGF) has been implicated in the pathogenesis of . . .
Journal Article
First-Line Crizotinib versus Chemotherapy in ALK-Positive Lung Cancer
by
Wu, Yi-Long
,
Iyer, Shrividya
,
Mekhail, Tarek
in
Adenocarcinoma - drug therapy
,
Adenocarcinoma - mortality
,
Adenocarcinoma/drug therapy/mortality
2014
The ALK inhibitor crizotinib as first-line therapy was associated with a significantly better response rate, longer progression-free survival, and greater improvement in quality of life measures than standard chemotherapy in patients with
ALK
-positive lung cancer.
Rearrangements of the anaplastic lymphoma kinase (
ALK
) gene are present in 3 to 5% of non–small-cell lung cancers (NSCLCs).
1
,
2
They define a distinct subgroup of NSCLC that typically occurs in younger patients who have never smoked or have a history of light smoking and that has adenocarcinoma histologic characteristics.
3
–
5
Crizotinib is an oral small-molecule tyrosine kinase inhibitor of ALK, MET, and ROS1 kinases.
6
In phase 1 and 2 studies, crizotinib treatment resulted in objective tumor responses in approximately 60% of patients with
ALK
-positive NSCLC and in progression-free survival of 7 to 10 months.
7
–
9
In . . .
Journal Article
Lenvatinib plus Pembrolizumab or Everolimus for Advanced Renal Cell Carcinoma
2021
Lenvatinib plus either pembrolizumab or everolimus was compared with sunitinib as first-line therapy for advanced renal cell cancer. Progression-free survival was significantly longer with lenvatinib plus pembrolizumab than with sunitinib. Lenvatinib plus everolimus was also more effective than sunitinib, but the difference was smaller.
Journal Article
Palbociclib in Hormone-Receptor–Positive Advanced Breast Cancer
2015
In women with hormone-receptor–positive metastatic breast cancer that had progressed after endocrine therapy, palbociclib plus fulvestrant was associated with progression-free survival of more than 9 months, as compared with less than 4 months with fulvestrant alone.
Approximately 80% of breast cancers express estrogen receptors, progesterone receptors, or both. Endocrine therapies are the mainstay of treatment for these hormone-receptor–positive cancers, substantially reducing the relapse rate after presentation with early-stage cancer.
1
Despite advances in endocrine therapy, many women have a relapse during or after completing adjuvant therapy. The care of these women remains a considerable clinical challenge. Single-agent treatment with an aromatase inhibitor or tamoxifen has shown limited clinical benefit.
2
,
3
The selective estrogen-receptor degrader fulvestrant has modest activity in this population of patients,
4
,
5
and the development of effective therapies that can reverse resistance to endocrine therapy . . .
Journal Article
Entrectinib in ROS1 fusion-positive non-small-cell lung cancer: integrated analysis of three phase 1–2 trials
by
Ohe, Yuichiro
,
Simmons, Brian
,
John, Thomas
in
Antineoplastic Agents - adverse effects
,
Antineoplastic Agents - therapeutic use
,
Benzamides - adverse effects
2020
Recurrent gene fusions, such as ROS1 fusions, are oncogenic drivers of various cancers, including non-small-cell lung cancer (NSCLC). Up to 36% of patients with ROS1 fusion-positive NSCLC have brain metastases at the diagnosis of advanced disease. Entrectinib is a ROS1 inhibitor that has been designed to effectively penetrate and remain in the CNS. We explored the use of entrectinib in patients with locally advanced or metastatic ROS1 fusion-positive NSCLC.
We did an integrated analysis of three ongoing phase 1 or 2 trials of entrectinib (ALKA-372-001, STARTRK-1, and STARTRK-2). The efficacy-evaluable population included adult patients (aged ≥18 years) with locally advanced or metastatic ROS1 fusion-positive NSCLC who received entrectinib at a dose of at least 600 mg orally once per day, with at least 12 months' follow-up. All patients had an Eastern Cooperative Oncology Group performance status of 0–2, and previous cancer treatment (except for ROS1 inhibitors) was allowed. The primary endpoints were the proportion of patients with an objective response (complete or partial response according to Response Evaluation Criteria in Solid Tumors version 1.1) and duration of response, and were evaluated by blinded independent central review. The safety-evaluable population for the safety analysis included all patients with ROS1 fusion-positive NSCLC in the three trials who received at least one dose of entrectinib (irrespective of dose or duration of follow-up). These ongoing studies are registered with ClinicalTrials.gov, NCT02097810 (STARTRK-1) and NCT02568267 (STARTRK-2), and EudraCT, 2012–000148–88 (ALKA-372-001).
Patients were enrolled in ALKA-372-001 from Oct 26, 2012, to March 27, 2018; in STARTRK-1 from Aug 7, 2014, to May 10, 2018; and in STARTRK-2 from Nov 19, 2015 (enrolment is ongoing). At the data cutoff date for this analysis (May 31, 2018), 41 (77%; 95% CI 64–88) of 53 patients in the efficacy-evaluable population had an objective response. Median follow-up was 15·5 monhts (IQR 13·4–20·2). Median duration of response was 24·6 months (95% CI 11·4–34·8). In the safety-evaluable population, 79 (59%) of 134 patients had grade 1 or 2 treatment-related adverse events. 46 (34%) of 134 patients had grade 3 or 4 treatment-related adverse events, with the most common being weight increase (ten [8%]) and neutropenia (five [4%]). 15 (11%) patients had serious treatment-related adverse events, the most common of which were nervous system disorders (four [3%]) and cardiac disorders (three [2%]). No treatment-related deaths occurred.
Entrectinib is active with durable disease control in patients with ROS1 fusion-positive NSCLC, and is well tolerated with a manageable safety profile, making it amenable to long-term dosing in these patients. These data highlight the need to routinely test for ROS1 fusions to broaden therapeutic options for patients with ROS1 fusion-positive NSCLC.
Ignyta/F Hoffmann-La Roche.
Journal Article
Nintedanib in Progressive Fibrosing Interstitial Lung Diseases
by
Goeldner, Rainer-Georg
,
Flaherty, Kevin R
,
Haeufel, Thomas
in
Aged
,
Carbon monoxide
,
Computed tomography
2019
In patients with a progressive interstitial lung disease, 62% of whom had a CT pattern of usual interstitial pneumonia, those who received nintedanib had a lower annual rate of decline in the forced vital capacity than those who received placebo at 52 weeks.
Journal Article
Candidate mechanisms of acquired resistance to first-line osimertinib in EGFR-mutated advanced non-small cell lung cancer
by
Aleksandra Markovets
,
Margarita Majem
,
Juliann Chmielecki
in
631/67
,
631/67/1612
,
692/4028/67/1059/602
2023
Osimertinib, an epidermal growth factor receptor tyrosine kinase inhibitor (EGFR-TKI), potently and selectively inhibits EGFR-TKI-sensitizing and EGFR T790M resistance mutations. In the Phase III FLAURA study (NCT02296125), first-line osimertinib improved outcomes vs comparator EGFR-TKIs in EGFRm advanced non-small cell lung cancer. This analysis identifies acquired resistance mechanisms to first-line osimertinib. Next-generation sequencing assesses circulating-tumor DNA from paired plasma samples (baseline and disease progression/treatment discontinuation) in patients with baseline EGFRm. No EGFR T790M-mediated acquired resistance are observed; most frequent resistance mechanisms are MET amplification (
n
= 17; 16%) and EGFR C797S mutations (
n
= 7; 6%). Future research investigating non-genetic acquired resistance mechanisms is warranted.
In the phase III FLAURA study (NCT02296125), the third-generation epidermal growth factor receptor tyrosine kinase inhibitor (EGFR-TKI) osimertinib provided superior progression-free survival versus comparator EGFR-TKIs in patients with NSCLC. Here, by next-generation sequencing of circulating tumor DNA, the authors assess candidate mechanisms of acquired resistance to first-line osimertinib in patients from the FLAURA trial.
Journal Article
Entrectinib in ROS1-positive advanced non-small cell lung cancer: the phase 2/3 BFAST trial
2024
Although comprehensive biomarker testing is recommended for all patients with advanced/metastatic non-small cell lung cancer (NSCLC) before initiation of first-line treatment, tissue availability can limit testing. Genomic testing in liquid biopsies can be utilized to overcome the inherent limitations of tissue sampling and identify the most appropriate biomarker-informed treatment option for patients. The Blood First Assay Screening Trial is a global, open-label, multicohort trial that evaluates the efficacy and safety of multiple therapies in patients with advanced/metastatic NSCLC and targetable alterations identified by liquid biopsy. We present data from Cohort D (
ROS1
-positive). Patients ≥18 years of age with stage IIIB/IV,
ROS1
-positive NSCLC detected by liquid biopsies received entrectinib 600 mg daily. At data cutoff (November 2021), 55 patients were enrolled and 54 had measurable disease. Cohort D met its primary endpoint: the confirmed objective response rate (ORR) by investigator was 81.5%, which was consistent with the ORR from the integrated analysis of entrectinib (investigator-assessed ORR, 73.4%; data cutoff May 2019, ≥12 months of follow-up). The safety profile of entrectinib was consistent with previous reports. These results demonstrate consistency with those from the integrated analysis of entrectinib in patients with
ROS1
-positive NSCLC identified by tissue-based testing, and support the clinical value of liquid biopsies to inform clinical decision-making. The integration of liquid biopsies into clinical practice provides patients with a less invasive diagnostic method than tissue-based testing and has faster turnaround times that may expedite the reaching of clinical decisions in the advanced/metastatic NSCLC setting. ClinicalTrials.gov registration:
NCT03178552
.
Results from this single-arm cohort of the BFAST trial showed that the clinical efficacy of entrectinib in patients with
ROS1
-positive NSCLC, selected using liquid biopsies, is consistent with that seen in previous reports where patients were selected using tissue-based testing methods.
Journal Article
Activity of Selumetinib in Neurofibromatosis Type 1–Related Plexiform Neurofibromas
by
Ratner, Nancy
,
Gillespie, Andrea
,
Martin, Staci
in
Adolescent
,
Animals
,
Benzimidazoles - administration & dosage
2016
Plexiform neurofibroma is a complication of the
NF1
mutation in neurofibromatosis that results in overactivity of the RAS pathway. Selumetinib, a mitogen-activated protein kinase (MAPK) kinase inhibitor, induced tumor regressions in a majority of patients.
Neurofibromatosis type 1 is a common genetic disorder that is characterized by multiple manifestations including tumors of the nervous system.
1
,
2
Plexiform neurofibromas develop in 20 to 50% of persons with neurofibromatosis type 1 and can cause substantial complications including pain, functional impairment, disfigurement, and malignant transformation.
3
–
7
Most plexiform neurofibromas are diagnosed in early childhood and grow most rapidly during this period.
8
,
9
Complete surgical resection of these tumors is often not feasible, and regrowth of the tumor after incomplete surgical resection has been observed.
10
,
11
The
NF1
product neurofibromin functions as a negative regulator of RAS activity. Lack . . .
Journal Article