Background. Asthma is a heterogeneous condition characterised by chronic inflammation and variable expiratory airflow limitation, as well as airway reversibility. The diagnosis of asthma in young children is limited by the inability to perform objective lung function testing in this group of patients and the wide variety of conditions that can phenotypically present with asthma-like symptoms. Objectives. To provide an evidence-based approach for clinicians to accurately diagnose asthma in young children and to assess the level of control to guide therapeutic decisions. Methods. The South African Childhood Asthma Working Group (SACAWG) convened in January 2017 with task groups, each headed by a section leader, constituting the editorial committee on assessment of asthma epidemiology, diagnosis, control, treatments, novel treatments and self-management plans. The asthma diagnosis and control task groups reviewed the available scientific literature and assigned evidence according to the Grades of Recommendation Assessment, Development and Evaluation (GRADE) system, providing recommendations based on current evidence. Conclusions. Asthma in young children should only be diagnosed if all other causes of wheezing have been considered and excluded, and if there is a response to a therapeutic trial and worsening with withdrawal of asthma medication. Asthma control should be assessed at each visit to guide therapeutic decisions.
Venom immunotherapy is the standard of care for people with severe reactions and has been proven to reduce risk of future anaphylactic events. There is a moral imperative to ensure production, supply and worldwide availability of locally relevant, registered, standardized commercial venom extracts for diagnosis and treatment. Insects causing severe immediate allergic reactions vary by region worldwide. The most common culprits include honeybees (Apis mellifera), social wasps including yellow jackets (Vespula and Dolichovespula), paper wasps (Polistes) and hornets (Vespa), stinging ants (Solenopsis, Myrmecia, Pachycondyla, and Pogonomyrmex), and bumblebees (Bombus). Insects with importance in specific areas of the world include the Australian tick (Ixodes holocyclus), the kissing bug (Triatoma spp), horseflies (Tabanus spp), and mosquitoes (Aedes, Culex, Anopheles). Reliable access to high quality venom immunotherapy to locally relevant allergens is not available throughout the world. Many current commercially available therapeutic vaccines have deficiencies, are not suitable for, or are unavailable in vast areas of the globe. New products are required to replace products that are unstandardized or inadequate, particularly whole-body extract products. New products are required for insects in which no current treatment options exist. Venom immunotherapy should be promoted throughout the world and the provision thereof be supported by health authorities, regulatory authorities and all sectors of the health care service.
La pandemia de COVID-19 resultó en una rápida diseminación global, con profundos impactos en los sistemas de salud. Aunque los datos pediátricos muestran de manera consistente un cuadro clínico más leve, se ha identificado que la enfermedad pulmonar crónica es un factor de riesgo para la hospitalización y para desarrollar una enfermedad grave. En África, continente formado predominantemente por países con ingresos bajos o medios (LMIC), la elevada prevalencia de VIH, tuberculosis, desnutrición y hacinamiento aumenta aún más los riesgos a la salud. En este trabajo se revisa la literatura sobre COVID-19 y enfermedad pulmonar crónica en niños, y relata nuestra experiencia en un centro de atención pulmonar pediátrico en Ciudad del Cabo, Sudáfrica. Los datos epidemiológicos en Sudáfrica confirman una baja prevalencia de la enfermedad grave, donde los pacientes < 18 años comprenden 8% de todos los casos diagnosticados de COVID-19 y 3% de todas las admisiones por esa causa. Se encontró una reducción en la admisión hospitalaria por otras infecciones del tracto respiratorio inferior. Aunque el servicio de pulmonología atiende niños con una amplia variedad de condiciones respiratorias crónicas, incluyendo bronquiectasias, fibrosis quística, asma, enfermedad pulmonar intersticial y pacientes con traqueostomías, no se observó un incremento significativo en las admisiones por COVID-19, y en quienes desarrollaron COVID-19, el curso de la enfermedad no fue grave. La evidencia actual sugiere que la preexistencia de una enfermedad respiratoria en niños no parece ser un factor de riesgo significativo para el COVID-19 grave. Aún se requieren datos longitudinales para evaluar el riesgo en niños con inmunosupresión y enfermedades pulmonares intersticiales. Los impactos indirectos de la respuesta a la pandemia en la salud respiratoria de los niños son notables, y es muy probable que aún deban comprenderse y cuantificarse. Garantizar el acceso de los niños a servicios preventivos y de cuidado completos durante este tiempo es prioritario.
Asthma is a severe and chronic disabling disease affecting more than 300 million people worldwide. Although in the past few drugs for the treatment of asthma were available, new treatment options are currently emerging, which appear to be highly effective in certain subgroups of patients. Accordingly, there is a need for biomarkers that allow selection of patients for refined and personalized treatment strategies. Recently, serological chip tests based on microarrayed allergen molecules and peptides derived from the most common rhinovirus strains have been developed, which may discriminate 2 of the most common forms of asthma, that is, allergen- and virus-triggered asthma. In this perspective, we argue that classification of patients with asthma according to these common trigger factors may open new possibilities for personalized management of asthma.
Asthma is the most common chronic disease of South African children, affecting growth and development and quality of life. Features supporting the diagnosis are a family or personal history of atopy, night cough, exercise-induced cough and/or wheeze and seasonal variation in symptoms. Asthma is on the increase in both developed and developing countries, in both rural and urban communities. The first part of this series aims to give a brief overview of the epidemiology, pathophysiology and diagnosis of childhood asthma.
Criteria for labelling infant feeds as suitable for the dietary management of cow's milk protein allergy (CMPA) rely on proving the hypoallergenicity of such feeds or clinical studies showing that the feeds are tolerated by 90% of children with proven CMPA. South African (SA) labelling legislation does not indicate what testing is necessary to prove hypoallergenicity.To evaluate all extensively hydrolysed cow's milk formulas and amino acid-based formulas available in SA for residual allergen content, protein size and amino-acid content.All amino-acid and extensively hydrolysed formulas were found to be similar in composition, with no residual cow's milk allergens detectable by enzyme-linked immunosorbent assay. Furthermore, proteins were absent and only small molecules in the size range of amino acids and possibly of very small oligopeptides were detected.These findings indicate that the formulas are extremely likely to be compliant with the definition of hypoallergenicity as tolerance in 90% of proven sufferers from cow's milk allergy. The formulas may therefore be labelled as suitable for the dietary management of infants with CMPA.
Precision allergy molecular diagnostic applications (PAMD@) is increasingly entering routine care. Currently, more than 130 allergenic molecules from more than 50 allergy sources are commercially available for invitro specific immunoglobulin E (sIgE) testing. Since the last publication of this consensus document, a great deal of new information has become available regarding this topic, with over 100 publications in the last year alone. It thus seems quite reasonable to publish an update. It is imperative that clinicians and immunologists specifically trained in allergology keep abreast of the new and rapidly evolving evidence available for PAMD@. PAMD@ may initially appear complex to interpret; however, with increasing experience, the information gained provides relevant information for the allergist. This is especially true for food allergy, Hymenoptera allergy, and for the selection of allergen immunotherapy. Nevertheless, all sIgE tests, including PAMD@, should be evaluated within the framework of a patient's clinical history, because allergen sensitization does not necessarily imply clinical relevant allergies.
To the Editor, A novel strain of human coronaviruses, the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), named by the International Committee on Taxonomy of Viruses (ICTV),1 has recently emerged and caused an infectious disease. This disease is referred to as the "coronavirus disease 2019" (COVID-19) by the World Health Organization (WHO).2 The US Centers for Disease Control and Prevention (CDC) have proposed that "People with moderate to severe asthma may be at higher risk of getting very sick from COVID-19. COVID-19 can affect your respiratory tract (nose, throat, lungs), cause an asthma attack and possibly lead to pneumonia and acute respiratory disease." (May 24, 2020). (https://www.cdc.gov/coronavirus/2019-ncov/need-extra-precautions/asthma.html) On the other hand, in the UK, NICE proposes rapid guidelines for severe asthma (https://www.guidelines.co.uk/covid-19-rapid-guideline-severe-asthma/455275.article). An ARIA-EAACI statement has been devised to make recommendations on asthma, and not necessarily on severe asthma, based on a consensus from its members. It is difficult in many studies to clearly assess the prevalence of asthma on COVID-19 since most patients are older adults and probably have multimorbidities. Most studies do not clarify whether asthmatic patients with COVID-19 have isolated asthma or asthma as a multimorbidity, particularly in the context of hypertension, obesity and diabetes. In particular, obesity is a significant risk factor for COVID-19 and its severity,3 and may be intertwined with asthma. In some studies, showing data mostly on critically ill patients, there does not appear to be an increased prevalence of asthma.4-7 In Wuhan, the prevalence of asthma in COVID-19 patients was 0.9%, markedly lower than that of the general adult population of this city.8 Differently, in New York, among 5,700 hospitalized patients with COVID-19, asthma prevalence was 9% and COPD 4.5%.9 In California, 7.4% of the 377 hospitalized patients had asthma or COPD.10 The US CDC reported that between March 1st and 30th 2020, among COVID-NET hospitals from 99 counties and 14 states (an open source neural network for COVID-19 infection), chronic lung disease (primarily asthma) was the second most prevalent comorbid condition for hospitalized patients aged 18-49 years with laboratory-confirmed COVID-19.11 Among the 17% of COVID-19-positive patients with an underlying history of asthma, the incidence was at its highest in younger adults (27% in the 18- to 49-year-old group). The UK experience on over 20, 133 hospitalized cases shows that 14% of admissions were patients with asthma.12 In the OpenSAFELY Collaborative Study (UK), an increased risk of severe COVID-19, including death, was found in patients with asthma, particularly related with a recent use of oral corticosteroid.13 A review with all identified studies up to 5 May 2020 is available.14 However, low socioeconomic status, obesity, non-white ethnicity, chronic respiratory disease and diabetes had stronger signals. Some anti-asthma medications, such as ciclesonide, might have a beneficial effect on COVID-19.15 Thus, whether patients with asthma are at a higher or lower risk of acquiring COVID-19 may depend on geography, age, other multimorbidities, different air quality,16 genetic predispositions, ethnicity, social behaviour, access to health care or other factors. Moreover, the current information is obtained mainly from hospitalization or intensive care unit data. Real-life data in a non-selected population of asthmatics are needed to better understand the links between asthma and SARS-Cov-2 in terms of both incidence and severity. Asthma does not seem to be a risk factor for severe COVID-19 but patients treated with oral corticosteroids may be at a higher risk of severe COVID-19.14 However, a large study is needed to fully appreciate the relationship between COVID-19 and severe asthma. According to the IPCRG (International Primary Care Respiratory Group), patients are still struggling to differentiate their symptoms between asthma flare-ups and COVID-19. They may therefore delay seeking care for asthma or COVID-19. Interestingly, clarity does not appear to have improved as the weeks have passed. People have recurrences or waves of repeated symptoms, and it is difficult to understand whether the symptoms are related to an asthma exacerbation or to COVID-19. According to the IPCRG, many clinicians tend to prescribe antibiotics to people who they believe are having asthma exacerbations "just to be safe." They focus on the potential infection element of the trigger more than the asthma management itself. It would seem that COVID-19 might exacerbate this behaviour, not improve it. In areas where COVID-19 is prevalent, GPs are still very concerned about oral—and, to a certain degree, inhaled—corticosteroids, possibly because they use remote models of care. They are reluctant to prescribe higher doses of ICS or OCS as they fear they cannot tell the difference between a flare-up and COVID-19. The extent of expression in the upper and lower airways of the SARS-CoV-2 entry receptors, angiotensin-converting enzyme 2 (ACE2) and TMPRSS2, might impact the clinical severity of COVID-19. ACE-2 was found to be decreased in patients with allergic asthma17 or in those receiving inhaled corticosteroids.18 These data suggest that this expression may be a potential contributor, among several other factors, to reduced COVID-19 severity in patients with T2 inflammation.17, 19 However, ACE-2 expression in asthma patients was increased in African Americans, in males and in association with diabetes. Finally, a recent study which analysed the nasal transcriptome of 695 children suggested that the strongest determinants of airway ACE2 and TMPRSS2 expression are T2 inflammation and viral-induced interferon inflammation. However, this study specifically showed that T2 inflammation (via IL-13) impacted differentially on ACE2 and TMPRSS2, with a T2-high phenotype being associated with a highly significant decrease in the former and a significant decrease in the latter receptor. Thus, although SARS-CoV-2-specific analyses and experiments are lacking, the differential effects of T2-inflammation on ACE2 and TMPRSS2 reported in this study warrant further research on whether T2-high and T2-low asthma phenotypes may be associated with differential susceptibility to severe COVID-19. The first author developed seven recommendations that were sent for comment to 105 experts around the world . 69 answers were received within 48 hours, and the comments were considered. Where experts suggested modification of the recommendations, a discussion was initiated and recommendations modified until consensus was reached. After these modifications, a total of 9 recommendations were proposed for a second round. In the second round, 145 experts were invited to comment on and approve or reject the recommendations. 78 answers were received within 48 hours and, when an agreement of over 80/100 was reached, the question was included in the statement. The same approach was used for the research questions. Two research needs were dropped. The geographic distribution of the experts is given in Figure 1. They were from 43 countries. ARIA-EAACI statement (Table 1). In accordance with the NICE, in non-SARS-CoV-2 infected patients, we propose(https://www.nice.org.uk/guidance/ng166/chapter/3-Treatment#patients-having-biological-treatment): ARIA-EAACI research questions (Table 2). This view is pragmatic, cautious and based upon expert opinion. However, it is likely to require modifications as further evidence is gathered. These recommendations are conditional and should be adapted regularly on the basis of evolving clinical evidence. Open access funding enabled and organized by Projekt DEAL. IA reports and Associate Editor of Allergy. CA reports grants from Allergopharma, Idorsia, Swiss National Science Foundation, Christine Kühne-Center for Allergy Research and Education, European Commission's Horison's 2020 Framework Programme, Cure, Novartis Research Institutes, Astra Zeneca, Scibase, advisory role in Sanofi/Regeneron. IA reports personal fees from Mundipharma, Roxall, Sanofi, MSD, Faes Farma, Hikma, UCB, Astra Zeneca, Stallergenes, Abbott, Bial. EB is a member of the Science Committee and Board of the Global Initiative for Asthma (GINA). SBA reports grants from TEVA, personal fees from TEVA, AstraZeneca, Boehringer Ingelheim, GSK, Sanofi, Mylan. JPB reports grants from AstraZeneca, Boston Scientific, GSK, Hoffman La Roche, Ono Pharma, Novartis, Sanofi, Takeda, Boehringer-Ingelheim, Merck, personal fees from AstraZeneca, GSK, Merck, Metapharm, Novartis, Takeda, other from AstraZeneca, Boehringer-Ingelheim, GSK, Merck, Novartis. JB reports personal fees from Chiesi, Cipla, Hikma, Menarini, Mundipharma, Mylan, Novartis, Purina, Sanofi-Aventis, Takeda, Teva, Uriach, other from KYomed-Innov. RB reports grants to Mainz University and personal fees from Boehringer Ingelheim, GlaxoSmithKline, Novartis, and Roche, as well as personal fees from AstraZeneca, Chiesi, Cipla, Sanofi, and Teva. VC reports personal fees from ALK, Allergopharma, Allergy Therapeutics, Diater, LETI, Thermo Fisher, Stallergenes. RSC reports grants from NIAID, CoFAR, Aimmune, DBV Technologies, Astellas, Regeneron, an Advisory member for Alladapt, Genentech, Novartis, and receives personal fees from Before Brands. AC reports grants and personal fees from GSK, SANOFI, Boehringer-Ingelheim, Astrazeneca, Mantecorp, MYLAN, Novartis, personal fees and non-financial support from CHIESI. SdG reports personal fees from AstraZeneca, Chiesi, Menarini, grants and personal fees from GSK, Novartis. DH reports personal fees from AstraZeneca, Chiesi, GSK, Pfizer, personal fees and non-financial support from Boehringer Ingelheim, Novartis. TE reports other from DBV, Regeneron, grants from Innovation fund Denmark and Co-I or scientific lead in three investigator initiated oral immunotherapy trials supported by the Allergy and Anaphylaxis Program Sickkids and serve as associate editor for Allergy. Advisory board ALK. JF reports personal fees from AstraZeneca, GSK, undipharma, grants and personal fees from Novartis. MG reports grants and personal fees from Elpen, Novartis, Menarini, grants from Galapagos, personal fees from BMS, MSD. TH reports personal fees from GSK, Mundipharma, OrionPharma. MH reports personal fees and non-financial support from GlaxoSmithKline, personal fees from Astrazeneca, Novartis, Roche, Sanofi, Teva. JCI reports personal fees from Faes Farma, Eurofarma Argentina, other from Laboratorios Casasco, Sanofi. GJ reports grants from AstraZeneca, Chiesi, personal fees from Bayer, Eureca vzw, Teva, grants and personal fees from GlaxoSmithKline. MJ reports personal fees from ALK-Abello, Allergopharma, Stallergenes, Anergis, Allergy Therapeutics, Circassia, Leti, Biomay, from HAL, Astra-Zeneka, GSK, Novartis, Teva, Vectura, UCB, Takeda, Roche, Janssen, Medimmune, Chiesi, LK reports grants and personal fees from Allergopharma, LETI Pharma, MEDA/Mylan, Sanofi, personal fees from HAL Allergie, Allergy Therapeut., grants from ALK Abelló, Stallergenes, Quintiles, ASIT biotech, grants from Lofarma, AstraZeneca, GSK, Inmunotk and Membership: AeDA, DGHNO,Deutsche Akademie für Allergologie und klinische Immunologie, HNO-BV GPA,EAACI. PK reports personal fees from Astra, Boehringer Ingelheim, Berlin Chemie Menarini, GSK, Lekam, Novartis, Polpharma, Mylan, Orion, Teva, Adamed. VK reports personal fees from GSK, non-financial support from StallergenGreer, AstraZeneca, Norameda, DIMUNA. DLL reports personal fees from Allakos, Amstrong, Astrazeneca, Boehringer Ingelheim, Chiesi, DBV Technologies, Grunenthal, GSK, MEDA, Menarini, MSD, Novartis, Pfizer, Novartis, Sanofi, Siegfried, UCB, Alakos, Gossamer, grants from Sanofi, Astrazeneca, Novartis, UCB, GSK, TEVA, Boehringer Ingelheim, Chiesi, Purina institute. RL reports grants and personal fees from AZ, GSK, Novartis, grants from Chiesi, JM reports personal fees and other from SANOFI-GENZYME & REGENERON, NOVARTIS, ALLAKOS, grants and personal fees from MYLAN Pharma, URIACH Group, personal fees from Mitsubishi-Tanabe, Menarini, UCB, AstraZeneca, GSK, from MSD, outside the submitted work. KN reports grants and other from NIAID, FARE, personal fees and other from Regeneron, grants from EAT, other from Sanofi, Astellas, Nestle, BeforeBrands, Alladapt, ForTra, Genentech, AImmune Therapeutics, DBV Technologies, personal fees from Astrazeneca, ImmuneWorks, Cour Pharmaceuticals, grants from Allergenis, Ukko Pharma, Novartis,AnaptysBio, Adare Pharmaceuticals, Stallergenes-Greer, NHLBI, NIEHS, EPA, WAO Center of Excellence, Iggenix, Probio, Vedanta, Centecor, Seed, Immune Tolerance Network, NIH,; In addition, Dr Nadeau has a patent Inhibition of Allergic Reaction to Peanut Allergen using an IL-33 Inhibitor pending, a patent Special Oral Formula for Decreasing Food Allergy Risk and Treatment for Food Allergy pending, a patent Basophil Activation Based Diagnostic Allergy Test pending, a patent Granulocyte-based methods for detecting and monitoring immune system disorders pending, a patent Methods and Assays for Detecting and Quantifying Pure Subpopulations of White Blood Cells in Immune System Disorders pending, a patent Mixed Allergen Compositions and Methods for Using the Same pending, and a patent Microfluidic Device and Diagnostic Methods for Allergy Testing Based on Detection of Basophil Activation pending. YO reports personal fees from Shionogi Co., Ltd., Torii Co., Ltd., GSK, MSD, Eizai Co.,Ltd., grants and personal fees from Kyorin Co., Ltd., Tiho Co., Ltd., grants from Yakuruto Co., Ltd., Yamada Bee Farm. ROB reports grants and personal fees from AstraZeneca, GSK, grants from Novartis, Medimmune, Bayer. YO reports personal fees from Shionogi Co., Ltd., Torii Co., Ltd., GSK, MSD, Eizai Co.,Ltd., grants and personal fees from Kyorin Co., Ltd., Tiho Co., Ltd., grants from Yakuruto Co., Ltd., Yamada Bee Farm, outside the submitted work. NP reports personal fees from Novartis, Nutricia, HAL, MENARINI/FAES FARMA, SANOFI, MYLAN/MEDA, BIOMAY, AstraZeneca, GSK, MSD, ASIT BIOTECH, Boehringer Ingelheim, grants from Gerolymatos International SA, Capricare. OP reports grants and personal fees from Anergis SA, ALK-Abelló, Allergopharma, Stallergenes Greer, HAL Allergy Holding BV/HAL Allergie GmbH, Bencard Allergie GmbH/Allergy Therapeutics, Lofarma, ASIT Biotech Tools SA, Laboratorios LETI/LETI Pharma, grants from Biomay, Glaxo Smith Kline Circassia, personal fees from MEDA Pharma/MYLAN, Mobile Chamber Experts (a GA2LEN Partner), Indoor Biotechnologies, Astellas Pharma Global, EUFOREA, ROXALL, NOVARTIS, SANOFI AVENTIS, Med Update Europe GmbH, streamedup! GmbH. FP reports sanofi, novartis, teva, astrazeneca, glaxosmithkline, menarini, mundipharma, guidotti, malesci, chiesi, valeas, allergy therapeutics, almirall, personal fees from boehringer Ingelheim. FR reports personal fees from AstraZeneca, Novartis, Lusomedicamenta, Sanofi, GSK. JS reports other from MEDA, grants and personal fees from SANOFI, personal fees from GSK, NOVARTIS, ASTRA ZENECA, MUNDIPHARMA, FAES FARMA. JSchwarze reports personal fees from MYLAN, outside the submitted work. ASheikh reports support of the Asthma UK Centre for Applied Research. RS reports grants from São Paulo Research Foundation, MSD,grants and personal fees from Novartis, grants, personal fees and non-financial support from AstraZeneca, Chiesi, Boehringer Ingelheim. IT reports grants from GSK Hellas, ELPEN, personal fees from Boehringer Ingelheim, Novartis, Astra Zeneca, GSK. TZ reports Organizational affiliations: Committee member: WHO-Initiative "Allergic Rhinitis and Its Impact on Asthma" (ARIA); Member of the Board: German Society for Allergy and Clinical Immunology (DGAKI); Head: European Centre for Allergy Research Foundation (ECARF); President: Global Allergy and Asthma European Network (GA2LEN); Member: Committee on Allergy Diagnosis and Molecular Allergology, World Allergy Organization (WAO). The other authors have no COI to declare.
International guideline-recommended on-demand treatments for hereditary angioedema (HAE) include: C1-esterase inhibitor (plasma-derived or recombinant), or bradykinin-receptor antagonists. In most low- and middle-income countries (LMIC) these products are not registered or are unaffordable. Solvent-detergent, fresh or freeze-dried plasma therapy is thus the only available on-demand treatment in these settings; but published data on efficacy and safety are limited. This study evaluated the efficacy and safety of on-demand plasma treatment of acute HAE in two LMICs.A retrospective folder or patient registry review of acute swelling episodes necessitating emergency room attendance amongst known HAE patients was conducted at treatment centers in South Africa and Iran. Data collected included the site of angioedema, timing and amount of fresh frozen plasma (FFP) administered, time-to-resolution, hospital length of stay and adverse events.There were 176 acute swelling episodes amongst 43 HAE patients; 98 were treated with FFP. The face, upper airway, and abdomen were involved in 15.3% (15/98), 53.1% (52/98) and 29.6% (29/98) of episodes treated with FFP respectively. Median (interquartile range ([IQR]) of FFP administered was 400 (280-560) mLs. In all episodes except two, FFP led to resolution, with median (IQR) hours to resolution 4 (2-12). Five transfusion reactions occurred, with one case of anaphylaxis and no deaths; giving an adverse reaction rate of 5%. Differences between South Africa and Iran included: (1) proportion of HAE type II(2) median (IQR) hours to FFP administration and hospitalization, (3) number of intubations after FFP infusion. Healthcare cost for FFP treatment was USD369- 791 in South Africa and USD275-550 in Iran, largely influenced by hospital length of stay.Plasma (fresh-frozen) remains the only available effective on-demand treatment for acute HAE in many countries. FFP is effective and safe, but time-to-resolution is slower and adverse events are more frequent than published data on targeted therapies. Overall healthcare cost of FFP approaches that of targeted therapies - now available through global access programs - when hospitalization is prolonged.