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The development of biomarker-driven targeted therapy has resulted in substantial benefits for patients with non–small cell lung cancer (NSCLC) with epidermal growth factor receptor (EGFR) mutations, and rearrangements involving the anaplastic lymphoma kinase (ALK) gene or the ROS1 gene. For patients with EGFR-mutant NSCLC EGFR tyrosine kinase inhibitors (eg, gefitinib, erlotinib, and afatinib) have a superior objective response rate and progression-free survival compared with chemotherapy in the first-line setting. For patients who have disease progression on EGFR tyrosine kinase inhibitor and with NSCLC with an EGFR T790M mutation osimertinib has demonstrated a superior response rate and progression-free survival compared with chemotherapy in the second-line setting.4 For patients with ALK rearrangements ALK tyrosine kinase inhibitors (eg, crizotinib, ceritinib) have a superior response rate and progression-free survival compared with chemotherapy in the first-line setting, and for patients who experience disease progression, ceritinib and alectinib have demonstrated clinically relevant response rates and progression-free survival..For patients with ROS1 rearrangements, targeted therapy, is associated with a higher response rate and longer progression-free survival than has been observed with chemotherapy. These molecular alterations are more common in NSCLC with adenocarcinoma histology and in the minority of patients with a light smoking or never smoking history. The success of these targeted therapies in molecularly defined subsets of NSCLC made the development of targeted therapies and identification of predictive biomarkers a focus of thoracic oncology research. Routine molecular testing is now the standard of care for patients with NSCLC with adenocarcinoma histology
Severe allergy asthma Characterized by clinical features of allergy to specific aeroallergens and increased levels of total or specific immunoglobulin E (IgE). Therefore, allergic asthma is characterized by high IgE levels and positive skin prick tests or specific IgE in serum and clinical symptoms compatible with exposure to the allergen. House dust mite and cat sensitization are the most prominent allergens associated with asthma severity. severe sinus disease (odds ratio [OR] 3.7), gastroesophageal reflux (OR, 4.9), recurrent respiratory infections (OR, 6.9), psychological dysfunctioning (OR, 10.8) and obstructive sleep apnea (OR, 3.4). Moreover, control is difficult to achieve in obese patients and in patients who do not adhere to medication or healthy lifestyle recommendations.
An Update on Lymphocyte Subtypes in Asthma and Airway Disease Inflammation is a hallmark of many airway diseases. Improved understanding of the cellular and molecular mechanisms of airway disease will facilitate the transition in our understanding from phenotypes to endotypes, thereby improving our ability to target treatments based on pathophysiologic characteristics. For example, allergic asthma has long been considered to be driven by an allergen-specific T helper 2 response. However, clinical and mechanistic studies have begun to shed light on the role of other cell subsets in the pathogenesis and regulation of lung inflammation.
Targeted therapy in the management of severe asthma patients High T2 High esinophil count and HIGH igE They are responsive to corticosteriods and biological Low T2 Normal esnophil count and normal IgE THEY ARE POOR TO STERIODS AND POOR RESPONSE TO BIOLOGICALS
Blood Eosinophils and Response to Maintenance Chronic Obstructive Pulmonary Disease Treatment. Data from the FLAME Trial. indacaterol/glycopyrronium provides superior or similar benefits over salmeterol/fluticasone regardless of blood eosinophil levels in patients with COPD The incidence of pneumonia was higher in patients receiving salmeterol/fluticasone than indacaterol/glycopyrronium in both the <2% and ≥2% subgroups Indacaterol/glycopyrronium was significantly superior to salmeterol/fluticasone for the prevention of exacerbations
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