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Diagnosis and investigation of suspected haemophagocytic lymphohistiocytosis in adults: 2023 Hyperinflammation and HLH Across Speciality Collaboration (HiHASC) consensus guideline. THE LANCET. RHEUMATOLOGY 2024; 6:e51-e62. [PMID: 38258680 DOI: 10.1016/s2665-9913(23)00273-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 10/01/2023] [Accepted: 10/04/2023] [Indexed: 01/24/2024]
Abstract
Haemophagocytic lymphohistiocytosis (HLH) is a hyperinflammatory syndrome characterised by persistently activated cytotoxic lymphocytes and macrophages, which, if untreated, leads to multiorgan dysfunction and death. HLH should be considered in any acutely unwell patient not responding to treatment as expected, with prompt assessment to look for what we term the three Fs-fever, falling blood counts, and raised ferritin. Worldwide, awareness of HLH and access to expert management remain inequitable. Terminology is not standardised, classification criteria are validated in specific patient groups only, and some guidelines rely on specialised and somewhat inaccessible tests. The consensus guideline described in this Health Policy was produced by a self-nominated working group from the UK network Hyperinflammation and HLH Across Speciality Collaboration (HiHASC), a multidisciplinary group of clinicians experienced in managing people with HLH. Combining literature review and experience gained from looking after patients with HLH, it provides a practical, structured approach for all health-care teams managing adult (>16 years) patients with possible HLH. The focus is on early recognition and diagnosis of HLH and parallel identification of the underlying cause. To ensure wide applicability, the use of inexpensive, readily available tests is prioritised, but the role of specialist investigations and their interpretation is also addressed.
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A novel phenotype of AChR-deficiency syndrome with predominant facial and distal weakness resulting from the inclusion of an evolutionary alternatively-spliced exon in CHRNA1. Neuromuscul Disord 2023; 33:161-168. [PMID: 36634413 DOI: 10.1016/j.nmd.2022.12.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 12/13/2022] [Accepted: 12/19/2022] [Indexed: 12/24/2022]
Abstract
Primary acetylcholine receptor deficiency is the most common subtype of congenital myasthenic syndrome, resulting in reduced amount of acetylcholine receptors expressed at the muscle endplate and impaired neuromuscular transmission. AChR deficiency is caused mainly by pathogenic variants in the ε-subunit of the acetylcholine receptor encoded by CHRNE, although pathogenic variants in other subunits are also seen. We report the clinical and molecular features of 13 patients from nine unrelated kinships with acetylcholine receptor deficiency harbouring the CHRNA1 variant NM_001039523.3:c.257G>A (p.Arg86His) in homozygosity or compound heterozygosity. This variant results in the inclusion of an alternatively-spliced evolutionary exon (P3A) that causes expression of a non-functional acetylcholine receptor α-subunit. We compare the clinical findings of this group to the other cases of acetylcholine receptor deficiency within our cohort. We report differences in phenotype, highlighting a predominant pattern of facial and distal weakness in adulthood, predominantly in the upper limbs, which is unusual for acetylcholine receptor deficiency syndromes, and more in keeping with slow-channel syndrome or distal myopathy. Finally, we stress the importance of including alternative exons in variant analysis to increase the probability of achieving a molecular diagnosis.
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An exploration of early sleep development in preschool children with and without a familial history of ADHD. Sleep Med 2022. [DOI: 10.1016/j.sleep.2022.05.088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Association of plasma neurofilament light chain with disease activity in chronic inflammatory demyelinating polyradiculoneuropathy. Eur J Neurol 2022; 29:3347-3357. [PMID: 35837802 PMCID: PMC9796374 DOI: 10.1111/ene.15496] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 06/06/2022] [Accepted: 06/25/2022] [Indexed: 01/02/2023]
Abstract
BACKGROUND AND PURPOSE This study was undertaken to explore associations between plasma neurofilament light chain (pNfL) concentration (pg/ml) and disease activity in patients with chronic inflammatory demyelinating polyradiculoneuropathy (CIDP) and examine the usefulness of pNfL concentrations in determining disease remission. METHODS We examined pNfL concentrations in treatment-naïve CIDP patients (n = 10) before and after intravenous immunoglobulin (IVIg) induction treatment, in pNfL concentrations in patients on maintenance IVIg treatment who had stable (n = 15) versus unstable disease (n = 9), and in clinically stable IVIg-treated patients (n = 10) in whom we suspended IVIg to determine disease activity and ongoing need for maintenance IVIg. pNfL concentrations in an age-matched healthy control group were measured for comparison. RESULTS Among treatment-naïve patients, pNfL concentration was higher in patients before IVIg treatment than healthy controls and subsequently reduced to be comparable to control group values after IVIg induction. Among CIDP patients on IVIg treatment, pNfL concentration was significantly higher in unstable patients than stable patients. A pNFL concentration > 16.6 pg/ml distinguished unstable treated CIDP from stable treated CIDP (sensitivity = 86.7%, specificity = 66.7%, area under receiver operating characteristic curve = 0.73). Among the treatment withdrawal group, there was a statistically significant correlation between pNfL concentration at time of IVIg withdrawal and the likelihood of relapse (r = 0.72, p < 0.05), suggesting an association of higher pNfL concentration with active disease. CONCLUSIONS pNfL concentrations may be a sensitive, clinically useful biomarker in assessing subclinical disease activity.
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163 Immunosuppression guidelines ongoing implementation project. J Neurol Psychiatry 2022. [DOI: 10.1136/jnnp-2022-abn2.207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
In 2016, a hospital approved guideline on first line immunosuppression was introduced. This included evidence-based guidance on consent, prescription, dosing, safety and efficacy monitoring of corticos- teroid, azathioprine, methotrexate, mycophenolate, IVIg, SCIg, rituximab and cyclophosphamide use in common inflammatory neuromuscular diseases. It was accompanied by drug-specific patient information booklets and disease-specific clinical outcome measurement tools. The centre for neuromuscular diseases has not recorded any serious adverse events associated with these medications since its introduction.With junior doctors rotating in 3-6 monthly cycles, we identified the need for recurrent implementation efforts to maintain guideline impact. With an iterative process of four sequential cycles we:1) performed a survey of adequacy of admission/discharge documentation,2) created electronic patient record (EPR) proformas for admission/discharge,3) included a training session at changeover hospital induction,4) added a training session to mid-rotation peer-led teaching rota.This process resulted in optimal admission/discharge documentation (as per guidelines) of: Cycle 2) 61%/96%; Cycle 3) 100%/70%; Cycle 4) 86%/100%.Here we highlight the potential for loss of compliance with guideline use by junior medical staff over multiple changeovers, demonstrate the need for ongoing implementation efforts and underline the benefit of integrated electronic proformas (content in poster).
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197 Checkpoint inhibitor associated neuritis a novel pathological entity. J Neurol Psychiatry 2022. [DOI: 10.1136/jnnp-2022-abn2.241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Checkpoint inhibitor immunotherapy has revolutionised cancer treatment. However, immunotoxicity due to dysregulated immune control can affect a range of non-cancer tissues causing dermatitis, colitis and endocrinopathies in up to 80% of exposed patients. Peripheral nerve neurotoxicity is rare (<5%) and described as GBS-like or CIDP-like in published case series.Here we present two cases of checkpoint inhibitor associated peripheral neuropathy suggesting this neuritis is a novel pathological entity.Case 155-year-old man treated with nivolumab and ipilimumab for renal cell carcinoma developed painful sensory predominant neuropathy after cycle 1. Gait impairment led to discontinuation by cycle3. NCS revealed axonal loss and conduction slowing but no demyelinating features. He was treated with IVIg without response.Case 255-year-old woman with metastatic melanoma was treated with pembrolizumab for 16 months without complication. Within weeks of change to nivolumab she developed painful neuropathic symptoms causing difficulty walking. Neurophysiology was similar to case 1 but she improved to normal with high dose corticosteroids over 4 months.Both sural nerve biopsies showed active large fibre degeneration with diffuse, predominantly T cell inflam- matory infiltrate. No malignant cells. No evidence of a primary demyelinating pathology.This novel inflammatory neuropathy warrants recognition due to alternative treatment response.
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1048 In Vitro Evaluation of the Response of Human Tendon-Derived Stromal Cells to a Novel Electrospun Suture. Br J Surg 2022. [DOI: 10.1093/bjs/znac269.490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Abstract
Aim
Recurrent tears after surgical tendon repair remain common, with 40% of rotator cuff repairs failing within one year. Repair failures can be partly attributed to the use of sutures not designed for the tendon cellular niche. Synthetic electrospun materials can mechanically support the tendon while providing topographical cues that modulate the immune response to promote wound healing. Here, a novel electrospun suture made from twisted polydioxanone (PDO) polymer filaments is compared to PDS II, a PDO suture clinically utilised in tendon repair.
Method
We evaluated the ability of electrospun suture and PDS II to support the attachment and proliferation of human tendon-derived stromal cells using PrestoBlue cell viability assays and scanning electron microscopy. Suture surface chemistry was analysed using X-ray photoelectron spectroscopy (XPS). Bulk RNA-Seq interrogated the transcriptional response of primary tendon-derived stromal cells to sutures after 14 days.
Results
The electrospun suture showed increased initial cell attachment compared to PDS II. XPS revealed that both sutures had similar local surface chemistry, indicating that the tendon-like architecture of electrospun suture was responsible for the greater cell attachment. Furthermore, electrospun suture elicited a stronger transcriptional response compared with PDS II, with relative enrichment of pathways including mTorc1 signalling and depletion of epithelial-to-mesenchymal transition and extracellular matrix gene sets. Neither suture induced transcriptional upregulation of inflammatory pathways.
Conclusion
Twisted electrospun sutures show promise in improving outcomes in surgical tendon repair by allowing increased cell attachment while maintaining a tissue response indicative of cell proliferation and wound healing, without significant fibrosis.
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Single cell multi-omics characterise discrete human tendon cells populations that persist in vitro and on fibrous scaffolds. Eur Cell Mater 2022; 44:1-20. [PMID: 35916474 DOI: 10.22203/ecm.v044a01] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Chronic tendinopathy represents a growing healthcare burden in the ageing global population. Curative therapies remain elusive as the mechanisms that underlie chronic inflammation in tendon disease remain unclear. Identifying and isolating key pathogenic and reparative cells is essential in developing precision therapies and implantable materials for improved tendon healing. Multiple discrete human tendon cell populations have been previously described ex vivo. To determine if these populations persist in vitro, healthy human hamstring tenocytes were cultured for 8 d on either tissue culture plastic or aligned electrospun fibres of absorbable polydioxanone. Novel single-cell surface proteomics combined with unbiased single-cell transcriptomics (CITE-Seq) was used to identify discrete tenocyte populations. 6 cell populations were found, 4 of which shared key gene expression determinants with ex vivo human cell clusters: PTX3_PAPPA, POSTN_SCX, DCN_LUM and ITGA7_NES. Surface proteomics found that PTX3_PAPPA cells were CD10+CD26+CD54+. ITGA7_NES cells were CD146+ and POSTN_SCX cells were CD90+CD95+CD10+. Culture on the aligned electrospun fibres favoured 3 cell subtypes (DCN_LUM, POSTN_SCX and PTX3_ PAPPA), promoting high expression of tendon-matrix-associated genes and upregulating gene sets enriched for TNF-a and IL-6/STAT3 signalling. Discrete human tendon cell subpopulations persisted in in vitro culture and could be recognised by specific gene and surface-protein signatures. Aligned polydioxanone fibres promoted the survival of 3 clusters, including pro-inflammatory PTX3-expressing CD10+CD26+CD54+ cells found in chronic tendon disease. These results improved the understanding of preferred culture conditions for different tenocyte subpopulations and informed the development of in vitro models of tendon disease.
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068 Immune checkpoint inhibitors: the neurologist’s role. Journal of Neurology, Neurosurgery and Psychiatry 2022. [DOI: 10.1136/jnnp-2022-abn.105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Over the last decade, immune checkpoint inhibitors (ICIs) have revolutionised treatment and outcomes for an increasing number of cancer types. By ‘removing the breaks’ they boost the anti-tumour immune response, but their effect is non-specific, and a number of systemic toxicities may arise. Neurological toxicity occurs in 1–14% patients depending upon the ICI regime used (Spain et al., 2016). We have developed a collaborative neurotoxicty service with the Royal Marsden Hospital, and demonstrate that early involve- ment of the neurologist is paramount to ensuring effective and efficient care in this patient group.To date, we have received 24 referrals regarding neurological symptoms in patients receiving ICIs. While half were due to ICI-related neurotoxicity, the remainder were caused by cancer progression (2), neurologi- cal side-effects of either other drugs (3) or systemic immune toxicities (2), or worsening/new ‘conventional’ neurological disorders (5). Therefore in addition to identifying and managing neurological toxicity, the role of the neurologist is to identify where neurological toxicity has not occurred, thus enabling the patient to be treated appropriately, while continuing with potentially life-saving immune therapy. With increasing use of these drugs, more robust understanding of risk, patterns and mechanisms of neurological injury must be established through collaborative, cross-disciplinary work to optimise outcomes in this patient group.rachel.brown@ucl.ac.uk
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140 Baseline variation in commonly used inflammatory neuropathy clinical outcome measures. Journal of Neurology, Neurosurgery and Psychiatry 2022. [DOI: 10.1136/jnnp-2022-abn.465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BackgroundReliable outcome measures are vital for guiding immunoglobulin therapy in inflammatory neuropathy. Disease-specific outcome measures exist with statistically sound minimal clinically important difference (MCID) to detect change (I-RODS:+/-4; grip strength:+/-8kPa). Scores generally remain stable in well-treated disease but variation occurs.AimsTo appreciate random variability of serially assessed grip strength, RODS and MRC-SS in clinically stable CIDP/MMN patients and explore early identification of non-random trends.MethodsWe performed a longitudinal study of serial outcome measures from Manchester neurosciences immunoglobulin database (June 2009 - September 2012). We used first score on maintenance dosing as baseline, and increase in dose (g/kg/month) as indicative of meaningful clinical deterioration. We cal- culated mean/SD actual and percentage change(Δ) for grip(kPa), I-RODS(logit scale) and MRC-SS(/70) over periods of clinical stability.Results54/152 patients had sufficient stability: 39CIDP (9F), 15MMN (2F). Median age:66 years(mean:64.8, range:28–89). ΔRODS: 313 timepoints over 0.4–83.9months (median:27.4). Median change:0(0%), mean:- 0.08(0.17%), SD:4.3(8.9%). Δgrip: 569 timepoints over 0.9–98.1months (median:29.7). Δright grip median:- 1kPa(-0.11%), mean:-0.87(-0.96%), SD:5.34(5.9%). Δleft median:0kPa(0%), mean:-0.82(-0.91%), SD:5.70(6.3%).ΔMRC-SS: 75 timepoints over 1.9–52.7 months (median:10.7). Median change:0(0%), mean:0.59(0.83%), SD:4.73(6.8%). Analysis on trend identification and randomness is underway.ConclusionAppreciation of magnitude of normal variation is clinically important. Early identification of trends will influence dosing decisions.ryankeh@srft.nhs.uk|ABN Bursary95
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172 Quality improvement project on the peri-procedural management of lumbar punctures. Journal of Neurology, Neurosurgery and Psychiatry 2022. [DOI: 10.1136/jnnp-2022-abn.201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
IntroductionCancellation rate of elective lumbar punctures (LPs) due to inappropriate management of antithrombotic medications and lack of adequate training of junior doctors in the peri-procedural man- agement of LPs encouraged us to conduct a quality improvement project aiming to address these issues.MethodsRetrospective review of day case elective LPs (01/10/2018 - 01/01/2019) Junior doctor surveys aiming to assess LP related knowledge and confidenceResults37.5% (75/200) of the scheduled LPs were cancelled due to mistakes in the pre-procedural man- agement of patients’ blood-thinning medication. Junior doctors’ knowledge of consent and antithrom- botic management was suboptimal. As was self-reported confidence and competency in independent performance of LPs at CMT/SHO level.Change implementedImplementation of Trust-approved Guidelines on peri-procedural management of LPs based on systematic review of literatureLP training clinicRe-audit.LP cancellation rate fell to 8% after implementation of these measures (15/04/2019 - 15/07/2019) with meaningful improvement in LP knowledge/confidence of junior doctors. christinamousele92@gmail.com
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122 Neurological manifestations of haemophagocytic lymphohistiocytosis. Journal of Neurology, Neurosurgery and Psychiatry 2022. [DOI: 10.1136/jnnp-2022-abn.447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Secondary (acquired) haemophagocytic lymphohistiocytosis (HLH) is a hyperinflammatory syndrome which can occur in the context of infection, malignancy or rheumatological disease and is associated with high mortality. Early recognition facilitates access to effective biological therapies and engage- ment with specialist MDTs which focus on managing the underlying trigger. Neurological manifestations are associated with poor prognosis but are not well described.We retrospectively reviewed 40 cases of secondary HLH in UCLH/NHNN; 25 had neurological compli- cations. Median age at onset: 36 years (range 11–79); 8 females. Causes of HLH were haematological malignancy (14), rheumatological disease (3), infection (2) and other/unknown (6). Neurological involve- ment portended higher morbidity and mortality: 21/40 ICU support; 19/40 in hospital death (15/25 and 16/25 with neurology). Neurological presentations included confusion (10) and reduced consciousness (5), headache (7), neuropathy (3) and myopathy (1). Based on symptomatology, radiological, CSF and metabolic and histological information we propose mechanistic causality of neurological manifesta- tions into: disease infiltration (13/25), metabolic (12/25), iatrogenic (2/25). The role of the cytokine storm in metabolic neurological derangement requires further investigation.We designed a minimal neurology dataset to improve prospective data collection instituted via the UK HiHASC (Hyperinflammatory and HLH Across Speciality Collaboration). A management algorithm is in development.rachelbrown@ucl.ac.uk|ABN Bursary86
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134 A qualitative study of patient perceptions of immunoglobulin treatment regimens for inflammatory neuropathy. Journal of Neurology, Neurosurgery and Psychiatry 2022. [DOI: 10.1136/jnnp-2022-abn.459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
IntroductionWith RCT evidence of equivalency between intravenous (IVIg) and subcutaneous (SCIg) immunoglobulin in the management of CIDP, we sought to optimise uptake of homecare SCIg in our inflammatory neuropathy cohort. This is of particular importance in the context of the COVID pandemic.AimTo explore patient perception of IVIg and SCIg and understand treatment preferences.MethodsWe performed a non-hypothesis driven qualitative study of patient perception. Data was collected from adult patients with CIDP via an open-ended telephone interview and a focus group facilitated by medics independent members of the treating team. The data was coded using Braun and Clarke’s reflexive thematic analysis.Results11 patients were interviewed (mean age=51.55; S.D. 8.70, mean time on immunoglobulin treatment 61 months, S.D. 35.64). Patients found the treatment effective but highlighted perceived side-effects. The hospital environment (IVIg treatment) was reassuring but brought with it a range of difficulties, both logisti- cal and financial. Knowledge and direct experience of SCIg was lacking.ConclusionWe will develop a structured questionnaire based on these themes for broader application across the cohort. From this qualitative data we will continue to adapt our service in a patient focused manner and identify measures of quality improvement.emmacallanan1@nhs.net92
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080 Listen to learn: podcast-series for IMT induction at National Hospital for Neurology and Neurosurgery. Journal of Neurology, Neurosurgery and Psychiatry 2022. [DOI: 10.1136/jnnp-2022-abn.405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BackgroundPodcasts are increasingly used as a learning resource in medicine. However, evidence illustrating their impact is limited.ObjectiveTo assess use and utility of podcasts in IMT induction/introduction to specialist neurology services in NHNN.Method: A survey of the 2019/20 IMT cohort revealed 85.7% to be ‘not confident’ in the management of patients with neurological disorders at induction. The same proportion had no previous neurology clinical experience. Podcast format, topics and content were derived from this feedback.We developed 5 open-ended questions on 10 topics (neuropathy, PLEX, DBS, seizure management, IVIg, CSF analysis, MG, GBS, myelopathy and demyelination) and recorded live Q&A sessions with specialist consultants and nurses after approval by UCLH comms team. The podcasts were launched 1 week pre- induction August 2020 on the NHNN education website via a link sent to all new starters. The website is accessible by IMT and specialist trainees after registration with a nhs.net email.A repeat survey was performed 1month post-induction and download data accessed from the website in January 2021.Results/Conclusion85.71% felt ‘confident’ in the management of neurological conditions. The podcasts have been played 560 times in 6 months, 453 times outside London suggesting transferable utility beyond NHNN.siqbal2482@gmail.com|ABN Bursary65
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096 Maintenance IVIg safe prescribing – audit of proforma and traffic light risk assessment system in NHNN. Journal of Neurology, Neurosurgery and Psychiatry 2022. [DOI: 10.1136/jnnp-2022-abn.132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
IntroductionWe recently published safety data on maintenance IVIg therapy for inflammatory neuropa- thies in similar patient cohorts from NHNN and the Manchester Neurosciences group [1,2]. Based on our findings the following clinical practice changes have been introduced:Routine monitoring and proactive treatment of vascular risk factors A traffic light system for guidance on appropriate blood testing.MethodsAnalysis of 2 weeks of IVIg admissions in NHNN prior to and within a month of the introduction of the proforma. Ethics was granted by the clinical governance committee.Results69 patient episodes were identified. 63(91.3%)day-care admissions, 6(8.7%)inpatient. 34 female (49.3%).18 patients(26.1%) had bloods taken prior to administration, 60(87%) and 30(43.5%) were screened for symptoms of venous and arterial thromboembolism. 2 (2.9%) and 0 were asked about VTE and ATE risk factors. 63 (91.3%) were asked about infectious symptoms. After introduction of the proforma screening for VTE, TTE and infections symptoms and risk improved to 100%. Aprropriate pre-IVIg bloods were taken in 4(6%).ConclusionIVIg is effective and low risk therapy for inflammatory neuropathy, however rare and serious complications can occur. We created this proforma to optimise safety monitoring in longterm mainte- nance therapy with reassuring improvements in this pilot review.milo.delaney@nhs.net
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077 Long-term safety and efficacy of mexiletine for patients with myotonic dystrophy type 1 and 2. Journal of Neurology, Neurosurgery and Psychiatry 2022. [DOI: 10.1136/jnnp-2022-abn.114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
IntroductionMyotonic dystrophies type 1 and 2 (DM1 and DM2) are progressive, inherited multisys- tem disorders characterized by muscle weakness, myotonia and life-threatening cardiac dysrythmias. Treatment of myotonia is important for quality of life, mobility, and functional independence. Mexiletine is a sodium channel blocker, which has so far been shown to be effective in myotonia management in non-dystrophic myotonias. However, cardiac side effects are reported. Its long-term safety and efficacy in DM1 has not been established.Methods25 patients with DM1 or DM2 have been treated with mexiletine in the NHNN cohort. Efficacy and tolerance was determined by patient report. PR interval, QRS duration and corrected QT interval (QTc) were noted.ResultsMean duration of treatment was 32.9 months. 21/25 patients reported efficacy, 3/25 partial efficacy, and 4/25 discontinued treatment due to gastrointestinal side effects.Mexiletine did not precipitate symptomatic arrhythmia in any patient. Paired assessment of ECG param- eters at baseline and at the highest treatment dose revealed no significant change in PR interval, QRS complex duration, or QTc.ConclusionsThis small retrospective analysis suggests long-term efficacy and cardiac safety of mexiletine for treatment of myotonia in patients with myotonic dystrophies.christinamousele92@gmail.com
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181 Peer-to-peer teaching as a learning tool for SHOs working in a highly specialist centre. Journal of Neurology, Neurosurgery and Psychiatry 2022. [DOI: 10.1136/jnnp-2022-abn.210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
IntroductionNeurology can be challenging for SHOs working at highly specialist centres. Clinical exposure might be limited by firm-based systems and teaching, which is often targeted to more senior trainees, covers rare conditions. This is reflected in GMC survey data from IMT/CMT trainees, which has been poor at NHNN in recent years.MethodsWe developed a novel peer-teaching programme, which was open to SHOs and physician associates. It consisted of weekly sessions led by an SHO with a supervising SpR present. Data on the provision of teaching for SHOs, on learning about topics covered within and outside individual firms, and on teaching opportunities, was collected prior to the programme. We repeated data collection after a 3-month trial of the teaching programme.ResultsWe demonstrated significant improvements in trainee perception of overall SHO teaching provision (p=0.014) and in opportunities to develop their own teaching (p=0.01), as well as learning about neuro- logical conditions/topics outside of their own firms (p=0.011). Teaching was consistently well attended and received positive free text responses in the questionnaires.ConclusionNeurology SHO peer-teaching creates an effective learning environment to facilitate learning about neurological topics appropriate to training level, where trainees can also improve their own teaching skills.clc70@doctors.org.uk
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194 Improving the experience of core medical trainees and trust doctors at NHNN. Journal of Neurology, Neurosurgery and Psychiatry 2022. [DOI: 10.1136/jnnp-2022-abn.223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
IntroductionFeedback from core medical trainees and trust-grade doctors at the National Hospital for Neurology and Neurosurgery highlighted areas for improvement including induction, curriculum coverage and educational governance. A rolling programme of improvements since August 2017, facilitated by a consultant-appointed CMT Lead, was implemented in response to feedback.MethodsSpecific improvements included a paired colleague system to facilitate leave, dedicated firm timetables with clinic and acute neurology allowances, a new junior doctor handbook, overhaul of the induction programme, the appointment of clinical support workers and physician associates, daily safety huddles, regular team-building events and a case presentation competition.ResultsWe evaluated doctor satisfaction on a 6-monthly basis using an internal survey, from August 2017 to December 2019. Measures that demonstrated clear improvement included the proportion of doctors rating induction as good (14% to 83%), feeling valued as a team member (34 to 75%), deeming the job valuable for training (67% to 100%), attending teaching (39% to 50%), and those that were able to present to a consultant (41% to 58%).DiscussionThrough rolling improvements and regular feedback, job satisfaction has improved. More work remains to be done, in particular to improve attendance at protected teaching and facilitate contact with consultants.bryan.ceronie@gmail.com
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Abstract
Objective: The aim of the current study was to examine relations between sleep problems and family factors and early markers of ADHD in young children with and without a familial risk for ADHD.Methods: Differences in sleep behavior and family functioning in children under 6 years with (n = 72) and without (n = 139) a familial risk for ADHD were investigated. The influence of family and sleep factors on the development of early temperament markers of ADHD (effortful control and negative affect) was explored. Parents/caregivers completed questionnaires on family functioning, child sleep behavior, and general regulatory behaviors.Results: A significant difference was observed between high-risk and low-risk groups for family functioning in the infant/toddler (<3 years) and preschool (>3 years) cohorts. Parents of infants/toddlers in the high-risk group reported poorer infant sleep. However, there were no sleep differences reported for the preschool cohort. Family functioning was found to predict effortful control, while sleep quality predicted negative affect.Conclusion: The results of this study highlight potential family and sleep issues for young children with a familial history of ADHD and the potential influence of these factors on early temperament markers of ADHD. Future research should explore these relations further in order to better establish whether early sleep and family interventions could mitigate later ADHD symptomatology.
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An approach to assessing immunoglobulin dependence in chronic inflammatory demyelinating inflammatory polyneuropathy. J Peripher Nerv Syst 2021; 26:461-468. [PMID: 34637194 DOI: 10.1111/jns.12470] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 10/02/2021] [Accepted: 10/03/2021] [Indexed: 12/16/2022]
Abstract
Regular immunoglobulin treatment maintains strength and prevents disability in chronic inflammatory demyelinating polyneuropathy (CIDP). Discrimination between active disease, with optimum symptom control on treatment, and disease in remission not requiring treatment is essential for therapeutic decision-making and clinical trial design. To compare treatment cessation versus gradual dose reduction in assessment of disease activity (immunoglobulin dependence) in a cohort of stable CIDP patients on maintenance immunoglobulin treatment. An approach to restabilization of immunoglobulin-dependent individuals is also described. Retrospective review of IVIg cessation or gradual reduction in 33 patients with stable CIDP on maintenance IVIg. Demographic, clinical and treatment data were collected; clinical monitoring data were recorded prospectively as part of routine clinical practice. A total of 21/33 patients (62.6%) were immunoglobulin dependent, (gradual dose reduction:11, cessation:10). Mean change in Inflammatory Rasch-built Overall Disability Scale (I-RODS) (-15, standard deviation [SD] 16) and Medical Research Council Sum Score (MRC-SS) (-4, SD: 4) was clinically and statistically meaningful (>75% exceeded minimum clinically important differences). Mean time to deterioration was 5.0 (SD: 4.6) months, shorter in cessation group (3.5 months) than gradual reduction group (8.8 months). All patients were restabilized to previous baseline (M: 2.3, SD: 4.3 months), half within 1 week of retreatment. A total of 12 patients (37.4%) remained stable without treatment for ≥2 years (remission). A total of 50% were identified rapidly by cessation and 50% by gradual dose reduction requiring mean 4.8 (SD: 2.8) years follow-up and costing £113 623 per person Ig spend. No predictors of disease activity were identified. A treatment cessation trial with close clinical monitoring is an efficient, cost-effective and safe approach to assessing disease activity in CIDP.
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FSHD. Neuromuscul Disord 2021. [DOI: 10.1016/j.nmd.2021.07.197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Long-term Safety and Efficacy of Mexiletine in Myotonic Dystrophy Types 1 and 2. Neurol Clin Pract 2021; 11:e682-e685. [PMID: 34840883 PMCID: PMC8610501 DOI: 10.1212/cpj.0000000000001073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Accepted: 02/10/2021] [Indexed: 11/15/2022]
Abstract
BACKGROUND AND OBJECTIVE Myotonic dystrophy types 1 and 2 are progressive multisystem genetic disorders whose core clinical feature is myotonia. Mexiletine, an antagonist of voltage-gated sodium channels, is a recommended antimyotonic agent in the nondystrophic myotonias, but its use in myotonic dystrophy is limited because of lack of data regarding its long-term efficacy and safety profile. METHODS To address this issue, this study retrospectively evaluated patients with myotonic dystrophy receiving mexiletine over a mean time period of 32.9 months (range 0.1-216 months). RESULTS This study demonstrated that 96% of patients reported some improvement in myotonia symptoms with mexiletine treatment. No clinically relevant cardiac adverse events were associated with the long-term use of mexiletine. CONCLUSIONS These findings support that mexiletine is both safe and effective when used long-term in myotonic dystrophy. CLASSIFICATION OF EVIDENCE This study provides Class IV evidence that mexiletine is a well-tolerated and effective treatment for myotonic dystrophy types 1 and 2.
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Isolated imbalance due to bilateral vestibular failure following immune checkpoint inhibitor administration: two cases. Eur J Cancer 2021; 156:187-189. [PMID: 34464870 DOI: 10.1016/j.ejca.2021.07.024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Accepted: 07/23/2021] [Indexed: 11/21/2022]
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The Effect of COVID-19 Related Stress on the Health and Wellness Behaviors of Faculty and Staff at a Mid-Size University. J Acad Nutr Diet 2021. [DOI: 10.1016/j.jand.2021.06.270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Implementation of a University Based Wellness Program in Response to Pandemic Related Loss of Community Nutrition Supervised Practice Rotations. J Acad Nutr Diet 2021. [DOI: 10.1016/j.jand.2021.06.208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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The Barriers and Enablers to Participation in Wellness Behaviors Post COVID-19 among Faculty and Staff at a Mid-Size University. J Acad Nutr Diet 2021. [DOI: 10.1016/j.jand.2021.06.267] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Sensory wellbeing workshops for inpatient and day-care patients with anorexia nervosa. NEUROPSYCHIATRIE : KLINIK, DIAGNOSTIK, THERAPIE UND REHABILITATION : ORGAN DER GESELLSCHAFT ÖSTERREICHISCHER NERVENÄRZTE UND PSYCHIATER 2021; 36:51-59. [PMID: 34129196 PMCID: PMC8204121 DOI: 10.1007/s40211-021-00392-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Accepted: 04/23/2021] [Indexed: 12/03/2022]
Abstract
Background The wellbeing of patients with eating disorders is one of the priorities in the “bigger picture” of treatment for eating disorders. Sensory soothing strategies for sensory sensitivities are supportive tools which could be useful in day-care and inpatient clinical programmes. Methods Evaluation of multiple separate sensory wellbeing workshops consisting of psychoeducation and experiential components delivered in inpatient and intensive day-care services was performed. Participants’ self-report questionnaires were evaluated pre- and post-workshop. Additionally, patients’ comments and qualitative feedback was collected after completion of the workshop. Results There was strong evidence that self-reported awareness of sensory wellbeing, awareness of strategies to enhance sensory wellbeing, and confidence in managing sensory wellbeing increased after the workshops with positive qualitative feedback from participants. The feedback questionnaires highlighted that patients found the sessions useful and were able to use some of the skills and strategies they learned in the workshop. Conclusion This pilot work on sensory wellbeing workshops with a protocol-based format was feasible and beneficial for the patient group. Preliminary evidence suggests that delivery of similar workshops could be sensible in addition to treatment as usual in inpatient and day-care programmes.
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FC 030CONTACTIN-1 IS A NOVEL ANTIGEN IN IDIOPATHIC MEMBRANOUS GLOMERULONEPHRITIS AND IN CIDP- ASSOCIATED GLOMERULONEPHRITIS. Nephrol Dial Transplant 2021. [DOI: 10.1093/ndt/gfab120.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background and Aims
Recently a number of antigens have been identified as pathogenic antibody targets in cases of primary membranous glomerulonephritis(MGN), including phospholipase A2 receptor (PLA2R), thrombospondin type 1 domain containing 7A(THSD7A), and NELL-1, while exostosin is found in secondary (lupus associated) MGN. However, other as yet undiscovered antigens are thought to exist. Although rare, there is a recognised association between chronic inflammatory demyelinating polyneuriopathy (CIDP) and nephrotic syndrome.
Method
We investigated the link between CICP and MGN and the associations with Contactin-1(CNTN1), a node of Ranvier neuronal protein, as a potential common autoantigen, by immunohistochemistry, RT-PCR and proteomic analysis of isolated glomeruli. We tested sera from 468 patients with suspected immune-mediated neuropathies, 295 with idiopathic MGN, and 210 disease controls, for CNTN1 antibodies.
Results
We describe a series of 16 patients, all presenting with CIDP, nephrotic syndrome due to MGN, and with circulating and deposited anti-contactin-1 (CNTN1) antibodies (IgG4 predominant in those tested) in the kidney. The onset and resolution of both disorders had a close temporal relationship, and the majority of cases were resistant to first-line therapies typically employed for inflammatory neuropathies, but achieved a good outcome with non-standard treatment. Importantly, four (1.4%) further patients with isolated MGN identified from a serum bank of 295 idiopathic MGN patients with no CIDP were also positive for anti-CNTN1 antibodies. CNTN1 protein was detected by mass spectroscopy within glomeruli from patients with CNTN1 antibodies, but not in healthy kidney or anti-PLA2R associated MGN. CNTN1 mRNA was found in renal cortical tissue.
Conclusion
These data provide evidence that CNTN1 antibodies precipitate both autoimmune neuropathy and MGN. The temporal correlation of these disorders, as well as the presence of CNTN1 protein and antibodies in both peripheral nerve and diseased glomeruli, supports a common antibody-mediated pathological process, and defines a new antigenic target in MGN. CNTN1 antibodies have diagnostic and therapeutic relevance, and may additionally serve as a means of monitoring disease activity in both conditions. Other factors may explain presentation with isolated neurological disease or MGN.
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RFC1 expansions are a common cause of idiopathic sensory neuropathy. Brain 2021; 144:1542-1550. [PMID: 33969391 PMCID: PMC8262986 DOI: 10.1093/brain/awab072] [Citation(s) in RCA: 59] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 12/29/2020] [Accepted: 01/18/2021] [Indexed: 12/15/2022] Open
Abstract
After extensive evaluation, one-third of patients affected by polyneuropathy remain undiagnosed and are labelled as having chronic idiopathic axonal polyneuropathy, which refers to a sensory or sensory-motor, axonal, slowly progressive neuropathy of unknown origin. Since a sensory neuropathy/neuronopathy is identified in all patients with genetically confirmed RFC1 cerebellar ataxia, neuropathy, vestibular areflexia syndrome, we speculated that RFC1 expansions could underlie a fraction of idiopathic sensory neuropathies also diagnosed as chronic idiopathic axonal polyneuropathy. We retrospectively identified 225 patients diagnosed with chronic idiopathic axonal polyneuropathy (125 sensory neuropathy, 100 sensory-motor neuropathy) from our general neuropathy clinics in Italy and the UK. All patients underwent full neurological evaluation and a blood sample was collected for RFC1 testing. Biallelic RFC1 expansions were identified in 43 patients (34%) with sensory neuropathy and in none with sensory-motor neuropathy. Forty-two per cent of RFC1-positive patients had isolated sensory neuropathy or sensory neuropathy with chronic cough, while vestibular and/or cerebellar involvement, often subclinical, were identified at examination in 58%. Although the sensory ganglia are the primary pathological target of the disease, the sensory impairment was typically worse distally and symmetric, while gait and limb ataxia were absent in two-thirds of the cases. Sensory amplitudes were either globally absent (26%) or reduced in a length-dependent (30%) or non-length dependent pattern (44%). A quarter of RFC1-positive patients had previously received an alternative diagnosis, including Sjögren's syndrome, sensory chronic inflammatory demyelinating polyneuropathy and paraneoplastic neuropathy, while three cases had been treated with immune therapies.
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The female medical workforce. Anaesthesia 2021; 76:1142. [PMID: 33789357 DOI: 10.1111/anae.15471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/13/2021] [Indexed: 11/27/2022]
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Thirty-day mortality following surgical management of hip fractures during the COVID-19 pandemic: findings from a prospective multi-centre UK study. INTERNATIONAL ORTHOPAEDICS 2021. [PMID: 32862265 DOI: 10.1007/s00264-020-04739-y/figures/2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
Abstract
PURPOSE Thirty-day mortality of patients with hip fracture is well researched and predictive; validated scoring tools have been developed (Nottingham Hip Fracture Score, NHFS). COVID-19 has significantly greater mortality in the elderly and comorbid patients which includes hip fracture patients. Non-operative treatment is not appropriate due to significantly higher mortality, and therefore, these patients are often exposed to COVID-19 in the peri-operative period. What is unclear is the effect of concomitant COVID-19 infection in these patients. METHODS A multicentre prospective study across ten sites in the United Kingdom (responsible for 7% of hip fracture patients per annum in the UK). Demographic and background information were collected by independent chart review. Data on surgical factors included American Society of Anesthesiologists (ASA) score, time to theatre, Nottingham Hip fracture score (NHFS) and classification of fracture were also collected between 1st March 2020 and 30th April 2020 with a matched cohort from the same period in 2019. RESULTS Actual and expected 30-day mortality was found to be significantly higher than expected for 2020 COVID-19 positive patients (RR 3.00 95% CI 1.57-5.75, p < 0.001), with 30 observed deaths compared against the 10 expected from NHFS risk stratification. CONCLUSION COVID-19 infection appears to be an independent risk factor for increased mortality in hip fracture patients. Whilst non-operative management of these fractures is not suggested due to the documented increased risks and mortality, this study provides evidence to the emerging literature of the severity of COVID-19 infection in surgical patients and the potential impact of COVID-19 on elective surgical patients in the peri-operative period.
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Clinical characteristics, risk factors, and outcomes of POEMS syndrome. Neurology 2020; 95:e268-e279. [DOI: 10.1212/wnl.0000000000009940] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Accepted: 12/27/2019] [Indexed: 12/16/2022] Open
Abstract
ObjectivePOEMS syndrome (polyneuropathy, organomegaly, endocrinopathy, monoclonal gammopathy, and skin lesions) is a paraneoplastic disorder resulting in severe neurologic disability. Understanding the clinical, laboratory, neurophysiologic, and histopathologic features as well as treatment responses of POEMS will assist in more accurate and timely diagnosis, risk stratification, and effective management.MethodsThis was a retrospective longitudinal cohort study from 1998 to March 2019, with 7,184 person-months of follow-up time. Hospital databases were used to collate presenting features, investigations, therapies, and response.ResultsOne hundred patients were included with a median follow-up time of 59 months (range, 1–252). Mean symptom onset to diagnosis was 15 months (range, 1–77), with 54% of patients initially misdiagnosed with chronic inflammatory demyelinating polyneuropathy. Median number of multisystem features at diagnosis was 7. Ninety-six (96%) presented with neuropathy, which was length-dependent in 93 (93%) and painful in 75 (75%). At diagnosis, 35% of patients were wheelchair or bedbound, with median Overall Neuropathy Limitation Score of 6, improving to 3 following treatment (p < 0.05). Five-year survival was 90% and 82% at 10 years, with 5- and 10-year progression-free survival of 65% and 53%. Nontreatment with autologous stem cell transplantation, nonhematologic response, and non–vascular endothelial growth factor response are significant risk factors in multivariate analysis to predict progression or death. Risk factors are incorporated to develop a risk score enabling stratification of high- and low-risk cases.ConclusionsPOEMS syndrome is a rare multisystem condition with delayed diagnosis and poor neurologic function at presentation. Therapy has favorable outcomes. Patients at high risk of death or progression can be identified, which may allow for more active monitoring and influence management.
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Abstract
Aims:To compare the effectiveness of a manualised group cognitive behaviour therapy (CBT) programme for people with bipolar disorder (BPD) and major depressive disorder (MDD).Method:In addition to treatment as usual (TAU), 17 people with BPD and 17 matched controls with MDD completed 8 or 12 sessions of twice weekly group CBT, followed by 6 booster sessions, held at monthly intervals. Participants completed the Structured Clinical Interview for DSM-IV Axis 1 Disorders, Clinician Version (SCID-1) and the University of Rhode Island Change Assessment (URICA) prior to therapy. They completed the Beck Depression Inventory - II (BDI), the Beck Anxiety Inventory (BAI), the Clinical Outcomes in Routine Evaluation (CORE), the World Health Organisation Quality of Life Brief Version (WHOQoL - BREF) and the Dysfunctional Attitudes Scale (DAS) before and after therapy and at the final follow-up session. The BDI and BAI were also completed at each group session.Results:Both groups showed statistically and clinically significant improvement on the BDI and BAI after treatment and at follow-up. Both groups showed a significant improvement on the psychological health sub-scale on the WHOQoL-BREF.Conclusions:Manualised group CBT leads to a reduction in the symptoms of depression and anxiety in people with both BPD and MDD and helps improve their perceived quality of life.Declaration of interest:None.
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The clinical spectrum of the congenital myasthenic syndrome resulting from COL13A1 mutations. Brain 2020; 142:1547-1560. [PMID: 31081514 PMCID: PMC6752227 DOI: 10.1093/brain/awz107] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 02/08/2019] [Accepted: 02/22/2019] [Indexed: 02/02/2023] Open
Abstract
Next generation sequencing techniques were recently used to show mutations in COL13A1 cause synaptic basal lamina-associated congenital myasthenic syndrome type 19. Animal studies showed COL13A1, a synaptic extracellular-matrix protein, is involved in the formation and maintenance of the neuromuscular synapse that appears independent of the Agrin-LRP4-MuSK-DOK7 acetylcholine receptor clustering pathway. Here, we report the phenotypic spectrum of 16 patients from 11 kinships harbouring homozygous or heteroallelic mutations in COL13A1. Clinical presentation was mostly at birth with hypotonia and breathing and feeding difficulties often requiring ventilation and artificial feeding. Respiratory crisis related to recurrent apnoeas, sometimes triggered by chest infections, were common early in life but resolved over time. The predominant pattern of muscle weakness included bilateral ptosis (non-fatigable in adulthood), myopathic facies and marked axial weakness, especially of neck flexion, while limb muscles were less involved. Other features included facial dysmorphism, skeletal abnormalities and mild learning difficulties. All patients tested had results consistent with abnormal neuromuscular transmission. Muscle biopsies were within normal limits or showed non-specific changes. Muscle MRI and serum creatine kinase levels were normal. In keeping with COL13A1 mutations affecting both synaptic structure and presynaptic function, treatment with 3,4-diaminopyridine and salbutamol resulted in motor and respiratory function improvement. In non-treated cases, disease severity and muscle strength improved gradually over time and several adults recovered normal muscle strength in the limbs. In summary, patients with COL13A1 mutations present mostly with severe early-onset myasthenic syndrome with feeding and breathing difficulties. Axial weakness is greater than limb weakness. Disease course improves gradually over time, which could be consistent with the less prominent role of COL13A1 once the neuromuscular junction is mature. This report emphasizes the role of collagens at the human muscle endplate and should facilitate the recognition of this disorder, which can benefit from pharmacological treatment.
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Bi-allelic JAM2 Variants Lead to Early-Onset Recessive Primary Familial Brain Calcification. Am J Hum Genet 2020; 106:412-421. [PMID: 32142645 PMCID: PMC7058839 DOI: 10.1016/j.ajhg.2020.02.007] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Accepted: 02/10/2020] [Indexed: 01/30/2023] Open
Abstract
Primary familial brain calcification (PFBC) is a rare neurodegenerative disorder characterized by a combination of neurological, psychiatric, and cognitive decline associated with calcium deposition on brain imaging. To date, mutations in five genes have been linked to PFBC. However, more than 50% of individuals affected by PFBC have no molecular diagnosis. We report four unrelated families presenting with initial learning difficulties and seizures and later psychiatric symptoms, cerebellar ataxia, extrapyramidal signs, and extensive calcifications on brain imaging. Through a combination of homozygosity mapping and exome sequencing, we mapped this phenotype to chromosome 21q21.3 and identified bi-allelic variants in JAM2. JAM2 encodes for the junctional-adhesion-molecule-2, a key tight-junction protein in blood-brain-barrier permeability. We show that JAM2 variants lead to reduction of JAM2 mRNA expression and absence of JAM2 protein in patient’s fibroblasts, consistent with a loss-of-function mechanism. We show that the human phenotype is replicated in the jam2 complete knockout mouse (jam2 KO). Furthermore, neuropathology of jam2 KO mouse showed prominent vacuolation in the cerebral cortex, thalamus, and cerebellum and particularly widespread vacuolation in the midbrain with reactive astrogliosis and neuronal density reduction. The regions of the human brain affected on neuroimaging are similar to the affected brain areas in the myorg PFBC null mouse. Along with JAM3 and OCLN, JAM2 is the third tight-junction gene in which bi-allelic variants are associated with brain calcification, suggesting that defective cell-to-cell adhesion and dysfunction of the movement of solutes through the paracellular spaces in the neurovascular unit is a key mechanism in CNS calcification.
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Abstract
A 69-year-old woman presented with severe subacute painful meningoradiculoneuritis. Neurophysiology showed a patchy, proximal axonal process with widespread denervation. Cerebrospinal fluid (CSF) was lymphocytic (normal T-cell predominant) with negative cytology. MRI revealed multiple sites of enhancement, but fluorodeoxyglucose positron emission tomography was negative. Bone marrow aspirate and trephine (BMAT) showed no evidence of a lymphoproliferative condition. Right brachial plexus biopsy demonstrated mixed T-cell/B-cell endoneurial inflammation not fulfilling criteria for vasculitis. She was stabilised with high-dose steroids and cyclophosphamide, followed by mycophenolate for inflammatory myeloradiculoneuritis. However, symptoms recurred when prednisolone was weaned. Although T-cell receptor gene analysis from the initial CSF demonstrated clonal rearrangements, it was only when the same clones were identified on two repeat BMATs and CSF that T-cell neurolymphomatosis, an exceedingly rare condition, was diagnosed. This case highlights the diagnostic challenge in peripheral neurolymphomatosis related to patchy disease, variable sensitivity and specificity of investigative tools, and the influence of therapies on traditional cytological definitions of lymphoma. The clinical picture, exhaustive exclusion of alternative causes and the persistence of an abnormal T-cell clone ultimately lead to a diagnostic consensus between specialist neurology and haematology clinicians.
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Thromboembolic risk with IVIg: Incidence and risk factors in patients with inflammatory neuropathy. Neurology 2019; 94:e635-e638. [PMID: 31852814 PMCID: PMC7136065 DOI: 10.1212/wnl.0000000000008742] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 08/15/2019] [Indexed: 11/15/2022] Open
Abstract
Our objective was to evaluate whether IV immunoglobulin (IVIg) increases the risk of thromboembolic events in neurology outpatients with inflammatory neuropathies, as there is conflicting evidence supporting this hypothesis, mainly from non-neurologic cohorts. We investigated this question over 30 months in our cohort of patients with inflammatory neuropathies receiving regular IVIg and found a greater incidence of arterial and venous thromboembolic events than population-based rates determined by hospital admissions data. Vascular risk factors were more common in the event group but there were no IVIg administration factors that contributed to the risk. This study suggests that IVIg may have a small but contributory role in determining thromboembolic risk in the inflammatory neuropathy cohort and more evidence is required before it is clear whether the current primary prevention guidelines are appropriate in this group of patients.
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The rate of bone loss slows after 1-2 years of initial antiretroviral therapy: final results of the Strategic Timing of Antiretroviral Therapy (START) bone mineral density substudy. HIV Med 2019; 21:64-70. [PMID: 31642586 DOI: 10.1111/hiv.12796] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/30/2019] [Indexed: 01/07/2023]
Abstract
OBJECTIVES Initial antiretroviral therapy (ART) causes loss of bone mineral density (BMD) over the first 1-2 years. Whether this loss continues with longer therapy is unclear. We determined changes in bone and spine BMD over 5 years in adults receiving immediate or deferred initial ART. METHODS In the Strategic Timing of Antiretroviral Therapy (START) BMD substudy, ART-naïve adults with CD4 counts > 500 cells/μL were randomized to immediate or deferred ART. Deferred group participants not yet on ART were offered ART after May 2015. Mean per cent changes in total hip and lumbar spine BMD (measured annually by dual-energy X-ray absorptiometry) were compared between groups using longitudinal mixed models. Fracture rates were also compared between groups for all START participants. RESULTS Substudy participants (immediate group, n = 201; deferred group, n = 210; median age 32 years; 80% non-white; 24% female) were followed for a mean 4.5 years until December 2016. In the immediate group, > 96% used ART throughout. In the deferred group, 16%, 58% and 94% used ART at years 1, 3 and 5, respectively. BMD decreased more in the immediate group initially; groups had converged by year 3 at the spine and year 4 at the hip by intent-to-treat (ITT). BMD changes after year 1 were similar in the immediate group and in those off ART in the deferred group [mean difference: spine, 0.03% per year; 95% confidence interval (CI) -0.4, 0.4; P = 0.88; hip, -0.2% per year; 95% CI -0.7, 0.3; P = 0.37]. Fracture incidence did not differ significantly between groups (immediate group, 0.86/100 person-years versus deferred group, 0.85/100 person-years; hazard ratio 1.01; 95% CI 0.76, 1.35; P = 0.98). CONCLUSIONS Significant ART-induced bone loss slowed after the first year of ART and became similar to that in untreated HIV infection.
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An Integrated Vaccine Clinic; a Novel Model of Care to Improve Vaccine Uptake in At-Risk Patient Groups. IRISH MEDICAL JOURNAL 2019; 112:1010. [PMID: 31651915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
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EP.103Genetic and phenotypic characterisation of inherited myopathies in a tertiary neuromuscular centre. Neuromuscul Disord 2019. [DOI: 10.1016/j.nmd.2019.06.509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Impact of a national enhanced recovery after surgery programme on patient outcomes of primary total knee replacement: an interrupted time series analysis from "The National Joint Registry of England, Wales, Northern Ireland and the Isle of Man". Osteoarthritis Cartilage 2019; 27:1280-1293. [PMID: 31078777 DOI: 10.1016/j.joca.2019.05.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 04/02/2019] [Accepted: 05/01/2019] [Indexed: 02/02/2023]
Abstract
OBJECTIVE We aimed to test whether a national Enhanced Recovery After Surgery (ERAS) Programme in total knee replacement (TKR) had an impact on patient outcomes. DESIGN Natural-experiment (April 2008-December 2016). Interrupted time-series regression assessed impact on trends before-during-after ERAS implementation. SETTING Primary operations from the UK National Joint Registry (NJR) were linked with Hospital Episode Statistics (HES) data which contains inpatient episodes undertaken in National Health Service (NHS) trusts in England, and Patient Reported Outcome Measures (PROMs). PARTICIPANTS Patients undergoing primary planned TKR aged ≥18 years. INTERVENTION ERAS implementation (April 2009-March 2011). OUTCOMES Regression coefficients of monthly means of Length of stay (LOS), bed day costs, change in Oxford knee scores (OKS) 6-months after surgery, complications (at 6 months), and rates of revision surgeries (at 5 years). RESULTS 486,579 primary TKRs were identified. Overall LOS and bed-day costs decreased from 5.8 days to 3.7 and from £7607 to £5276, from April 2008 to December 2016. Oxford knee score (OKS) change improved from 15.1 points in April 2008 to 17.1 points in December 2016. Complications decreased from 4.1 % in April 2008 to 1.7 % in March 2016. 5-year revision rates remained stable at 4.8 per 1000 implants years in April 2008 and December 2011. After ERAS, declining trends in LOS and bed costs slowed down; OKS improved, complications remained stable, and revisions slightly increased. CONCLUSIONS Different secular trends in outcomes for patients having TKR have been observed over the last decade. Although patient outcomes are better than a decade ago ERAS did not improve them at national level.
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How we treat neurological toxicity from immune checkpoint inhibitors. ESMO Open 2019; 4:e000540. [PMID: 31423344 PMCID: PMC6678012 DOI: 10.1136/esmoopen-2019-000540] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Revised: 06/11/2019] [Accepted: 06/17/2019] [Indexed: 12/17/2022] Open
Abstract
Neurological adverse events from immune checkpoint inhibition are increasingly recognised, especially with combination anti-cytotoxic T-lymphocyte antigen 4 (CTLA4) and anti-programmed death receptor 1 (anti-PD-1) therapies. Their presenting symptoms and signs are often subacute and highly variable, reflecting the numerous components of the nervous system. Given the risk of substantial morbidity and mortality, it is important to inform patients of symptoms that may be of concern, and to assess any suspected toxicity promptly. As with other immune-related adverse events, the cornerstone of management is administration of corticosteroids. Specialist neurology input is vital in this group of patients to guide appropriate investigations and tailor treatment strategies.
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086 Clinical, investigational and treatment factors do not determine prognosis of patients with inflammatory neuropathies. J Neurol Psychiatry 2019. [DOI: 10.1136/jnnp-2019-anzan.74] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
IntroductionIdentifying patients who need long-term immunoglobulin (IVIg) treatment in patient with inflammatory neuropathies is essential as recent treatment trials show a remission rate of up to 40%.AimsCompare retrospective data on clinical, investigational and treatment factors in patients who have ceased IVIg with patients who have failed a cessation trial.Methods15 patients who successfully suspended IVIg infusions were compared with 15 in whom decreasing or stopping IVIg was unsuccessful.Results30 patients (12 with CIDP and 3 with MMN in both groups) were diagnosed 39.5 months from onset of symptoms in the successful group vs. 40.7 months in the unsuccessful group (p=0.953). There was a significant difference in the summed upper limb sensory amplitudes on electrophysiology prior to starting IVIg between the patients with CIDP (17.4 mV vs. 9.8mV p=0.007). There was no difference in the average doses between the groups. A successful cessation trial was attempted at a mean of 60.5 months post starting treatment, compared with 60 months in the unsuccessful patients.ConclusionThere is a need for objective biomarker to measure disease activity because other than one neurophysiology marker, other factors did not help predict a successful cessation trial of IVIg.
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Classification of rotator cuff tendinopathy using high definition ultrasound. Muscles Ligaments Tendons J 2019. [DOI: 10.32098/mltj.03.2014.20] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Randomized trial of three doses of vitamin D to reduce deficiency in pregnant Mongolian women. EBioMedicine 2018; 39:510-519. [PMID: 30552064 PMCID: PMC6354654 DOI: 10.1016/j.ebiom.2018.11.060] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 11/09/2018] [Accepted: 11/27/2018] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND In winter in Mongolia, 80% of adults have 25-hydroxyvitamin D (25(OH)D) concentrations <25 nmol/l (<10 ng/ml) and 99% have <50 nmol/l (<20 ng/ml). The vitamin D dose to avert deficiency during pregnancy in this population is unknown. METHODS We conducted a randomized, controlled, double-blind trial of daily 600, 2000, or 4000 IU vitamin D3 for pregnant women in Mongolia (Clinicaltrials.gov #NCT02395081). We examined 25(OH)D concentrations at baseline (12-16 weeks' gestation), 36-40 weeks' gestation and in umbilical cord blood, using enzyme linked fluorescent assay. Sample size was determined to detect 0.4 standard deviation differences in 25(OH)D concentrations with 80% power. FINDINGS 119 pregnant women were assigned 600 IU, 121 assigned 2000 IU and 120 assigned 4000 IU from February 2015 through December 2016. Eighty-eight percent of participants took ≥80% of assigned supplements. At baseline, 25(OH)D concentrations were similar across arms; overall mean ± standard deviation concentration was 19 ± 22 nmol/l; 91% were < 50 nmol/l. At 36-40 weeks, 25(OH)D concentrations increased to 46 ± 21, 70 ± 23, and 81 ± 29 nmol/l for women assigned 600, 2000, and 4000 IU, respectively (p < 0.0001 across arms; p = 0.002 for 2000 vs. 4000 IU). Mean umbilical cord 25(OH)D concentrations differed by study arm (p < 0.0001 across arms; p < 0.0001 for 2000 vs. 4000 IU) and were proportional to maternal concentrations. There were no adverse events, including hypercalcemia, attributable to vitamin D supplementation. INTERPRETATION Daily supplementation of 4000 IU during pregnancy is safe and achieved higher maternal and neonatal 25(OH)D concentrations than 2000 IU. Daily 600 IU supplements are insufficient to prevent vitamin D deficiency in Mongolia. FUND: Anonymous foundation and Brigham and Women's Hospital.
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Monitoring the effect of PI3K inhibition on HER2 therapy resistant breast cancer using serial analysis of PIK3CA mutant tumour DNA in plasma. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy269.136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Non-invasive genotyping and monitoring of tumor evolution in locally advanced rectal cancer (LARC) patients using circulating tumor DNA (ctDNA). Ann Oncol 2018. [DOI: 10.1093/annonc/mdy281.097] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Artificial Intelligence to Predict Periprosthetic Joint Infection after Total Hip Replacement. Int J Surg 2018. [DOI: 10.1016/j.ijsu.2018.05.708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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An artificial neuronal network to predict revision surgery after total hip replacement. Int J Surg 2018. [DOI: 10.1016/j.ijsu.2018.05.363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Comparison of clinical factors that impact disease activity in patients with inflammatory neuropathies. Neuromuscul Disord 2018. [DOI: 10.1016/s0960-8966(18)30352-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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