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International audience; Protein kinase inhibitors experienced their advent in the 2000s. Their market introduction made it possible to constitute a class of targeted therapies administered orally. This name was chosen to mark a break with conventional chemotherapy drugs, but it is important to stress that these are multi-target drugs with complex affinity profiles. Adverse effects can be explained by direct interactions with their targets of interest, chosen for their indications (on-target) but also interactions with other targets (off-target). The adverse effect profiles of these drugs are therefore varied and it is possible to identify common profiles related to inhibitions of common targets. Identification of these targets has improved the global understanding of the pathophysiological mechanisms underlying the onset of adverse drug reactions as well as of the related diseases, and makes it possible to predict the adverse effect profile of new protein kinase inhibitors based on their affinities. In this review, we describe the main adverse drug reactions associated with protein kinase inhibitors, their frequency and their plausible mechanisms of action.

According to previous reports, diabetes seems to be a risk factor which worsens the serious clinical events caused by COVID-19. But is diabetes per se a risk factor that increases the probability of getting the virus? This paper will discuss this point. There are not many research data on antidiabetic drugs in this context. The potential influence of glucose-lowering agents on the severity of COVID-19 has not been described yet. Dipeptidylpeptidase-4 (DPP-4) is a cell surface protein ubiquitously expressed in many tissues and it is also a soluble molecule found in serum/plasma fluids. DPP-4 is involved in infection of cells by some viruses. This paper reviews data about the use of DPP-4 inhibitors and others diabetes drugs on COVID-19 patients. As such, no available evidence has yet suggested that glucose-lowering drugs - including those targeting DPP4-related pathways - produce any significant harm or benefit in the context of human infections. However, insulin must remain the first-choice agent in the management of critically ill-hospitalized patients, while it is recommended to suspend other agents in unstable patients. This paper provides related French and international recommendations for people with diabetes who got infected by COVID-19 and upholds that infections may alter glucose control and may require additional vigilance., D’après les dernières analyses de cas notamment en Chine et en Italie, le diabète semble être un facteur de risque d’aggravation de l’état clinique d’un patient atteint par le COVID-19 mais est-il un facteur de susceptibilité ? Une analyse de la littérature à la date du 6 mai 2020 tente de répondre à la question. Les données concernant le type de traitement antidiabétique à utiliser dans ces circonstances et son impact éventuel sur l’état clinique d’un patient infecté par le COVID-19 sont très rares. La dipeptidylpeptidase 4 (DPP-4), glycoprotéine membranaire ubiquitaire présente à la surface de nombreuses cellules et existant aussi sous forme soluble, est impliquée dans les réponses immunitaires inflammatoires en modifiant la production de plusieurs cytokines. La DPP-4 est impliquée dans l'infection des cellules par certains virus. Nous abordons la question de l’utilisation des inhibiteurs des DPP-4 chez les patients diabétiques et il n’y a pas à ce jour de données qui indiquent que l’état clinique des patients dépend de leur utilisation. De la même façon, l’utilisation de la metformine, des sulfamides hypoglycémiants, des analogues du GLP1 comme de l’insuline n’ont pas fait l’objet d’études dans ce contexte. Il nous parait prudent en phase aigüe de la maladie, en particulier chez les patients nécessitant un séjour en unités de soins intensifs de privilégier l’insuline chez eux. A la lumière d’une revue des recommandations sur la prise en charge des diabétiques,l’optimisation du contrôle glycémique est à privilégier et plusieurs messages clefs délivrés par les Sociétés savantes concluent ce travail.

Since December 2019, the COVID-19 pandemic has become a major public health problem. To date, there is no evidence of a higher incidence of COVID in patients with autoimmune rheumatic diseases and we support the approach of maintaining chronic rheumatological treatments. However, once infected there is a small but significant increased risk of mortality. Among the different treatments, NSAIDs are associated with higher rates of complications, but data for other drugs are conflicting or incomplete. The use of certain drugs for autoimmune inflammatory rheumatisms appears to be a potentially interesting options for the treatment. The rationale for their use is based on the immune system runaway and the secretion of pro-inflammatory cytokines (Il1, IL6, TNFα) in severe forms of the disease. Notably, patients on chloroquine or hydroxychloroquine as a treatment for their autoimmune rheumatic disease are not protected from COVID-19., Depuis décembre 2019, la pandémie de COVID-19 est devenue un problème majeur de santé publique. À ce jour, il n’y a aucune preuve d’une incidence plus élevée de COVID chez les patients atteints de maladies rhumatismales auto-immunes et nous soutenons l’approche consistant à maintenir les traitements rhumatologiques chroniques. Cependant, une fois infecté, il y a un risque accru de mortalité faible mais significatif. Parmi les différents traitements, les AINS sont associés à des taux plus élevés de complications, mais les données pour d’autres médicaments sont contradictoires ou incomplètes. L’utilisation de certains médicaments pour les rhumatismes inflammatoires auto-immuns semble être une option potentiellement intéressante pour le traitement. La raison de leur utilisation est basée sur l’emballement du système immunitaire et la sécrétion de cytokines pro-inflammatoires (Il1, IL6, TNFα) dans les formes graves de la maladie. Notamment, les patients sous chloroquine ou hydroxychloroquine comme traitement de leur maladie rhumatismale auto-immune ne sont pas protégés contre la COVID-19.

Some concerns about the prescription of drugs acting on the renin-angiotensin system (angiotensin-converting enzyme 1 (ACE1) inhibitors, ACEi; angiotensin II type 1 receptor blockers, ARB) have emerged due to SARS COV2 and COVID-19 pandemic. These very legitimate questions are directly the consequence of the recent recognition of the fundamental role of ACE2 (angiotensin-converting enzyme 2) in COVID-19 infection. Indeed, SARS COV2 utilizes ACE2 as a membrane receptor to enter target cells. Consequently, the putative impact of drugs modulating the renin-angiotensin system on the risk of developing severe or fatal severe acute respiratory syndrome in case of COVID-19 infection emerged. As a membrane-bound enzyme (carboxypeptidase), ACE2 inactivates angiotensin II and therefore physiologically counters its effects. Due to a different structure compared with ACE1, ACE2 is insensitive to ACEIs. In vitro, both ARBs and ACEi appear able to upregulate ACE2 tissue expression and activity but these results were not confirmed in Humans. The exact impact of both ARBs and ACEis on COVID-19 infection is definitively known and preliminary results are even in favor of a protective role confers by these drugs. Due to the crucial role of ACE2, some groups support the hypothesis that a modulation of ACE2 expression could represent a valuable therapeutic target could confer protective properties against inflammatory tissue damage in COVID-19 infection. So, studies are currently ongoing to test the impact of elevated ACE2 membrane expression, administration of ARB and infusion of soluble ACE2. In summary, based on the currently available evidences and as recommended by several medical societies, ACEi or ARB should not be systematically discontinued because to date no safety signal was raised with the use of these drugs.