Publications by authors named "Mark Friswell"

Importance: Children with chronic medical conditions are at increased risk of severe influenza. Uptake of influenza vaccination in children and adolescents with these identified special risk medical conditions (SRMCs) is suboptimal.

Objective: To assess the effectiveness of Flutext-4U, a parent short message service (SMS) reminder nudge intervention, in increasing influenza immunization in children and adolescents with SRMCs.

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Introduction: Influenza immunisation is a highly cost-effective public health intervention. Despite a comprehensive National Immunisation Program, influenza vaccination in children and adolescents with special risk medical conditions (SRMCs) is suboptimal. Flutext-4U is an innovative, multi-component strategy targeting paediatric hospitals, general practice and parents of children and adolescents with SRMC.

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Patients with juvenile idiopathic arthritis (JIA) can experience a severe disease course, with progressive destructive polyarthritis refractory to conventional therapy with disease-modifying antirheumatic drugs including biologics, as well as life-threatening complications including macrophage activation syndrome (MAS). Allogeneic hematopoietic stem cell transplantation (allo-HSCT) is a potentially curative immunomodulatory strategy for patients with such refractory disease. We treated 16 patients in 5 transplant centers between 2007 and 2016: 11 children with systemic JIA and 5 with rheumatoid factor-negative polyarticular JIA; all were either refractory to standard therapy, had developed secondary hemophagocytic lymphohistiocytosis/MAS poorly responsive to treatment, or had failed autologous HSCT.

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Objective: Timely access to holistic multidisciplinary care is the core principle underpinning management of juvenile idiopathic arthritis (JIA). Data collected in national clinical audit programmes fundamentally aim to improve health outcomes of disease, ensuring clinical care is equitable, safe and patient-centred. The aim of this study was to develop a tool for national audit of JIA in the UK.

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Severe infections are emerging as major risk factors for death among children with juvenile idiopathic arthritis (JIA). In particular, children with refractory JIA treated with long-term, multiple, and often combined immunosuppressive and antiinflammatory agents, including the new biological disease-modifying antirheumatic drugs (DMARDs), are at increased risk for severe infections and death. We investigated 4 persons with JIA who died during 1994-2013, three of overwhelming central venous catheter-related bacterial sepsis caused by coagulase-negative Staphylococus or α-hemolytic Streptococcus infection and 1 of disseminated adenovirus and Epstein-Barr virus infection).

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Objectives: Definitive sample sizes for clinical trials in rare diseases are usually infeasible. Bayesian methodology can be used to maximise what is learnt from clinical trials in these circumstances. We elicited expert prior opinion for a future Bayesian randomised controlled trial for a rare inflammatory paediatric disease, polyarteritis nodosa (MYPAN, Mycophenolate mofetil for polyarteritis nodosa).

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Objective: To determine whether mucocutaneous manifestations are associated with major organ involvement in a UK national cohort of juvenile-onset SLE (JSLE) patients.

Methods: JSLE patients (n = 241) from 15 different centres whose diagnosis fulfilled four or more of the ACR criteria were divided into two groups: those with at least one ACR mucocutaneous criterion (ACR skin feature positive) and those without (ACR skin feature negative) at diagnosis. The relative frequency of skin involvement was described by the paediatric adaptation of the 2004 British Isles Lupus Assessment Group (pBILAG-2004) index.

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We report a 14-yr-old girl who presented with cardiogenic shock because of compression of the left main coronary artery secondary to Takayasu's arteritis. The patient required cardiac transplantation with hemi-arch replacement at the time of transplant because of ascending aortitis. To our knowledge, this is the first case of cardiac transplantation in Takayasu's arteritis to be reported in the literature.

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Aim: To describe a spectrum of intracerebral large artery disease in Aicardi-Goutières syndrome (AGS) associated with mutations in the AGS5 gene SAMHD1.

Method: We used clinical and radiological description and molecular analysis.

Results: Five individuals (three males, two females) were identified as having biallelic mutations in SAMHD1 and a cerebral arteriopathy in association with peripheral vessel involvement resulting in chilblains and ischaemic ulceration.

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Objective: To assess the use of mycophenolate mofetil (MMF) in the treatment of refractory primary angiitis of the CNS in childhood (cPACNS).

Methods: A retrospective chart review was performed in patients with cPACNS who were treated with MMF following failure of a combination of corticosteroids and another immunosuppressant.

Results: Three patients from two centres were included in this study.

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Unlabelled: As part of collaborative multi-centre study started in 2000, 7 children in the UK fulfilled the inclusion criteria for treatment with autologous T cell depleted (TCD) haematopoietic stem cell transplantation (HSCT) for severe juvenile idiopathic arthritis (JIA). Here we report on the outcome and transplant-related complications.

Outcome: The initial, often dramatic clinical response in all patients was followed in 4 with sustained benefit, including the withdrawal of immunosuppressive and anti-inflammatory treatment, significant catch-up growth and immense improvement of the quality of life during 5-8 years long follow-up.

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