Studies investigating the genetic association of the C677T methylenetetrahydrofolate reductase (MTHFR) genotype and dietary methyl donors with asthma and atopy are limited, and have variable results.
Allergen immunotherapy is the only currently available treatment strategy that modifies the immune response to the causative allergen and induces clinical improvement and a steroid-sparing effect.
Exposure to particulate matter (PM) has been known to develop asthma in children and the oxidative stress-related mechanisms are suggested. For the development of asthma, not only the exposure dose but also the critical window and the risk modifying factors should be evaluated.
Alexithymia is among psychological factors reported to interfere with asthma management. Severe allergic asthma (SAA) is characterized by uncontrolled asthma despite maximal standard pharmacological treatment which can benefit from an add-on treatment with Omalizumab, an anti-IgE monoclonal antibody.
Severe uncontrolled chronic rhinosinusitis with nasal polyps (CRSwNP) is a challenging condition to treat. The European Position Paper on Rhinosinusitis and Nasal Polyps 2020 (EPOS2020) has the following criteria when considering biological therapy for severe uncontrolled CRSwNP: eosinophilia, need for oral corticosteroids (OCS), symptom score, loss of sense of smell and co-morbid asthma.
The role of anti-elastin antibody (Ab) in the lung is unclear, although they may be involved in chronic obstructive pulmonary disease (COPD). Recently, increased anti-elastin Ab levels were reported in asthma.
Inhaled corticosteroid/long-acting β2-agonist (ICS/LABA) for moderate/severe asthma i.e. regular Fluticasone propionate/Salmeterol (FP/Salm) with as-needed short acting beta-2 agonist (SABA) or ICS/Formoterol Maintenance And Reliever Therapy (MART) are the recommended options.
It is often difficult to differentiate between asthma and chronic obstructive pulmonary disease (COPD), and useful biomarkers are needed for accurate diagnosis.
The Center for Disease Control and Prevention (CDC) has mentioned Coronavirus Disease 2019 (COVID-19) patients with moderate or severe asthma as a high risk group for severe illness. While WHO mentioned only chronic respiratory diseases, not specifically asthma as a risk factor for severe illness. There has been asthma prevalence discrepancy in studies of COVID-19 across the world.