If the chance of viral infection is high in the first 3C6?months after starting alemtuzumab or cladribine, the guideline advises against commencing these drugs during the pandemic, and if a patient is already on these medicines the next round of treatment should be delayed. conducted a systematic review of clinical practice guidelines about the usage of immunosuppressants Fenofibrate during the COVID-19 pandemic. Electronic databases including MEDLINE and the websites of relevant professional body were searched for English language guidelines that were published or updated between March 2020 and May 2020 in this area. We assessed the quality and regularity of guidelines. The evidence base underpinning these guidelines was critically appraised using GRADE criteria. Results: Twenty-three guidelines were included. Most guidelines (2009; 6: e1000097. doi:10.1371/journal.pmed1000097. For more information, visit www.prisma-statement.org. Two reviewers (FBP and TWH) independently assessed the guidelines, and discrepancies were resolved by consulting with another reviewer (PKM). General public and patient involvement was not specifically sought as this is the review of existing evidence around the use of immunosuppressant brokers. Crucial appraisal of guidelines The following Grading of Recommendations, Assessment, Fenofibrate Development, and Evaluation (GRADE) Criteria (https://training.cochrane.org/grade-approach) were used to assess the level of evidence of individual guidelines. Level of evidence was classified as 1: 1a, Systematic reviews (with homogeneity) of randomized controlled trials; 1b, Individual randomized controlled trials (with thin con?dence interval); 1c, All or none randomized controlled trials; Level of evidence 2: 2a, Systematic reviews (with homogeneity) of cohort studies; 2b, Individual cohort study Fenofibrate or low-quality randomized controlled trials (e.g. 80% follow-up); 2c, Outcomes research; ecological studies; Level of evidence 3: 3a, Systematic review (with homogeneity) of case-control studies; 3b, Individual case-control study; Level of evidence 4, Case series and poor-quality cohort and case-control studies; Level of evidence 5: Expert opinion without explicit crucial appraisal, or based on physiology, bench research or first principles. We re-categorized the level of overall evidence included in these guidelines as very low (GRADE 5 evidence), low (GRADE evidence level 3aC4), moderate (GRADE evidence level 2aC2c) and high (GRADE evidence level 1aC1c). Where evidence indirectly related to COVID-19 has been generalized, it has been downgraded. For example, a cohort study around the susceptibility to viral infections (not specifically SARS-CoV-2) associated with immunosuppressant use has been downgraded from moderate to low. Where evidence was not cited to support recommendations, we have downgraded as very low, as it is likely to be an expert opinion. Results Twenty-three guidelines developed for clinicians managing patients taking immunosuppressive medications during the coronavirus pandemic were Fenofibrate identified, of which 15 were from the United Kingdom, four from the United States, two from Australia and two were international guidelines. Summary of individual guidelines UK The UK guidelines for patients on immunosuppressants in COVID-19 are summarized in Table 1. The Good has issued several guidelines relevant to patients taking immunosuppressant medicines during the COVID-19 pandemic. Good guideline 169 contamination.single biologic (e.g. anti-TNF or JAKi).COVID-19 rapid guideline: rheumatological, autoimmune, inflammatory and metabolic bone disorders8 provides comparable guidance for these patient groups. It additionally emphasized that clinicians should be aware of atypical presentations of COVID-19 (e.g. lack of fever with corticosteroids or interleukin-6 inhibitors), and consider possible medication changes such as dosage, route and frequency of administration for those patients with confirmed COVID-19 disease. Steroids, hydroxychloroquine and sulfasalazine should be continued but other disease-modifying anti-rheumatic drugs, JAK inhibitors and biological therapies should be halted temporarily. COVID-19 quick guideline: severe asthma9 and COVID-19 quick guideline: community-based care of patients with chronic obstructive pulmonary disease (COPD)10 gives the same guidance on oral corticosteroids C those patients taking oral maintenance steroids should not quit them abruptly. Good says that its guidelines are produced from existing guidelines and guidance from specialists. Many professional societies in the UK, including the British Society of Gastroenterologists, Association of British Neurologists, British Transplant Society and British Society of Rheumatologists have produced guidelines relevant to their patient groups. Guidance from your British Transplant Society (BTS), entitled Guidance on the management of transplant recipients diagnosed with or suspected of having COVID19,11 divides recommendations depending on the severity of the COVID-19 disease. It recommends that all patients with COVID-19 should have their anti-proliferative medications including mycophenolate mofetil and azathioprine withheld, regardless of disease severity. For patients with moderate COVID-19 symptoms, who do not require hospital admission, it recommends critiquing the total burden of immunosuppression and considering reducing the dose of calcineurin inhibitors (CNIs) and recommends the use of high or increased dose C19orf40 of steroids. However, this guideline does not specify whether maintenance doses of steroids should be continued. For patients requiring hospital admission, it recommends early concern of.