Heteromeric clusters of ubiquitinated ER-shaping proteins drive ER-phagy.

Membrane-shaping proteins characterized by reticulon homology domains play an important part in the dynamic remodelling of the endoplasmic reticulum (ER). An example of such a protein is FAM134B, which can bind LC3 proteins and mediate the degradation of ER sheets through selective autophagy (ER-phagy)1. Mutations in FAM134B result in a neurodegenerative disorder in humans that mainly affects sensory and autonomic neurons2. Here we report that ARL6IP1, another ER-shaping protein that contains a reticulon homology domain and is associated with sensory loss3, interacts with FAM134B and participates in the formation of heteromeric multi-protein clusters required for ER-phagy. Moreover, ubiquitination of ARL6IP1 promotes this process. Accordingly, disruption of Arl6ip1 in mice causes an expansion of ER sheets in sensory neurons that degenerate over time. Primary cells obtained from Arl6ip1-deficient mice or from patients display incomplete budding of ER membranes and severe impairment of ER-phagy flux. Therefore, we propose that the clustering of ubiquitinated ER-shaping proteins facilitates the dynamic remodelling of the ER during ER-phagy and is important for neuronal maintenance.

Anti-Ku + myositis: an acquired inflammatory protein-aggregate myopathy.

Myositis with anti-Ku-autoantibodies is a rare inflammatory myopathy associated with various connective tissue diseases. Histopathological studies have identified inflammatory and necrotizing aspects, but a precise morphological analysis and pathomechanistic disease model are lacking. We therefore aimed to carry out an in-depth morpho-molecular analysis to uncover possible pathomechanisms. Muscle biopsy specimens from 26 patients with anti-Ku-antibodies and unequivocal myositis were analyzed by immunohistochemistry, immunofluorescence, transcriptomics, and proteomics and compared to biopsy specimens of non-disease controls, immune-mediated necrotizing myopathy (IMNM), and inclusion body myositis (IBM). Clinical findings and laboratory parameters were evaluated retrospectively and correlated with morphological and molecular features. Patients were mainly female (92%) with a median age of 56.5 years. Isolated myositis and overlap with systemic sclerosis were reported in 31%, respectively. Isolated myositis presented with higher creatine kinase levels and cardiac involvement (83%), whereas systemic sclerosis-overlap patients often had interstitial lung disease (57%). Histopathology showed a wide spectrum from mild to pronounced myositis with diffuse sarcolemmal MHC-class I (100%) and -II (69%) immunoreactivity, myofiber necrosis (88%), endomysial inflammation (85%), thickened capillaries (84%), and vacuoles (60%). Conspicuous sarcoplasmic protein aggregates were p62, BAG3, myotilin, or immunoproteasomal beta5i-positive. Proteomic and transcriptomic analysis identified prominent up-regulation of autophagy, proteasome, and hnRNP-related cell stress. To conclude, Ku + myositis is morphologically characterized by myofiber necrosis, MHC-class I and II positivity, variable endomysial inflammation, and distinct protein aggregation varying from IBM and IMNM, and it can be placed in the spectrum of scleromyositis and overlap myositis. It features characteristic sarcoplasmic protein aggregation on an acquired basis being functionally associated with altered chaperone, proteasome, and autophagy function indicating that Ku + myositis exhibit aspects of an acquired inflammatory protein-aggregate myopathy.

Family Caregivers of Cancer Patients: Burdens and Support Preferences of Partner, Parent and Adult-Child Caregivers.

OBJECTIVE: The aim of this study is to (1) identify similarities and differences in psychosocial burdens and support needs experienced by parent, partner and adult-child caregivers and (2) identify support needs of family caregivers regarding peer support programs. METHODS: Semi-structured interviews (n = 30) were conducted with family caregivers of cancer patients. Interviews were transcribed and analyzed by inductive content analysis to identify themes. RESULTS: Ten categories of burden were identified for all three groups of caregivers. Partners emphasized the time burden through caregiving, parents and adult-child caregivers accentuated the emotional burden. All caregivers wished for peer-to-peer exchange which will provide the feeling not to be alone, to share emotions and to prepare for what will come next. Preferences for matching with peers with similar prognosis for their sick relative and similar living conditions were found. CONCLUSIONS: Partner, parent and adult-child caregivers describe similar burdens of caregiving. They wish for peer support programs that allow them to share their experiences with persons who understand their situation. Therefore, caregivers desire a good match with peers to enhance the positive outcome of peer exchange.

Bi-allelic variants of FILIP1 cause congenital myopathy, dysmorphism and neurological defects.

Filamin-A-interacting protein 1 (FILIP1) is a structural protein that is involved in neuronal and muscle function and integrity and interacts with FLNa and FLNc. Pathogenic variants in filamin-encoding genes have been linked to neurological disorders (FLNA) and muscle diseases characterized by myofibrillar perturbations (FLNC), but human diseases associated with FILIP1 variants have not yet been described. Here, we report on five patients from four unrelated consanguineous families with homozygous FILIP1 variants (two nonsense and two missense). Functional studies indicated altered stability of the FILIP1 protein carrying the p.[Pro1133Leu] variant. Patients exhibit a broad spectrum of neurological symptoms including brain malformations, neurodevelopmental delay, muscle weakness and pathology and dysmorphic features. Electron and immunofluorescence microscopy on the muscle biopsy derived from the patient harbouring the homozygous p.[Pro1133Leu] missense variant revealed core-like zones of myofibrillar disintegration, autophagic vacuoles and accumulation of FLNc. Proteomic studies on the fibroblasts derived from the same patient showed dysregulation of a variety of proteins including FLNc and alpha-B-crystallin, a finding (confirmed by immunofluorescence) which is in line with the manifestation of symptoms associated with the syndromic phenotype of FILIP1opathy. The combined findings of this study show that the loss of functional FILIP1 leads to a recessive disorder characterized by neurological and muscular manifestations as well as dysmorphic features accompanied by perturbed proteostasis and myopathology.

Changes in health-related quality of life, depression, and fear of progression during oncological inpatient rehabilitation and beyond: a longitudinal study.

PURPOSE: Studies evaluating oncological inpatient rehabilitation rarely include follow-up intervals beyond 6 months and larger proportions of patients other than those with breast cancer. Therefore, this study investigated changes in health-related quality of life (HRQoL), depression, and fear of progression of patients with breast, colorectal, or prostate cancer from the beginning to the end of oncological rehabilitation and a 9-month follow-up. METHODS: Three hundred seventy-seven patients with breast, colorectal, or prostate cancer undergoing oncological inpatient rehabilitation (median age 61 years, 49% female) completed the EORTC QLQ-C30, the PHQ-9, and the FoP-Q-SF at each measurement point. Data analysis used 3 (tumor site) × 3 (time of measurement) repeated measures ANCOVAs with patient age and time since diagnosis as covariates. At each time point, we also compared our sample to the general population on the measures used. RESULTS: Having controlled for the covariates, we found significant effects of tumor site, which were small except for Diarrhea. Effects of time of measurement were often significant and in part at least medium in size indicating improvement of HRQoL and depression during rehabilitation. At follow-up, some HRQoL domains and depression deteriorated. Women with breast cancer, in particular, showed a greater decrease in emotional functioning then. Compared to the general population, the sample's HRQoL and depression were significantly worse on most occasions. CONCLUSION: Oncological inpatient rehabilitation may improve HRQoL. The subsequent and in part differential deterioration in some HRQoL domains suggests a need for further follow-up care within survivorship programs.

Needs, preferences, and patient participation for a randomized controlled trial on postneoadjuvant complete tumor response: A qualitative study of patients with esophageal cancer.

PURPOSE: For patients with clinical complete response of non-metastatic esophageal cancer (EC) after neoadjuvant chemoradiotherapy (nCRT) or neoadjuvant chemotherapy (nCT), the two treatment options obligate postneoadjuvant surgery as the current standard treatment (surgery on principle) versus active surveillance with surgery as needed only in recurring loco-regional tumor as a possible future alternative or standard exist. Since these treatments are presumably equivalent in terms of overall survival, patient-centered information can encourage the discussion with the treating physician and can make it easier for patients to make trade-offs between the advantages and disadvantages of the treatment alternatives in a highly distressed situation. METHODS: A qualitative prospective cross-sectional study was conducted to create patient-centered information material that is based on patients' preferences, needs, and concerns regarding the two treatment options, and to investigate the potential participation in a consecutive randomized controlled trial (RCT). Therefore, EC patients (N = 11) were asked about their attitudes. RESULTS: Concerns about the surgery and possible postoperative impairments in quality of life were identified as most mentioned negative aspects of surgery on principle, and recurrence and progression fear and the concern that surgery cannot be avoided anyways as most named negative aspects of surgery as needed. In regard to the participation in an RCT, making a contribution to science and the hope that the novel therapy would be superior to the established one were relevant arguments to participate. On the other hand, the lack of a proactive selection of treatment was named an important barrier to participation in an RCT. CONCLUSION: The importance of adapting medical conversations to the patients' lack of expertise and their exceptional cognitive and emotional situation is stressed. Results of this study can be used to improve patient-centered information and the recruitment of patients in RCTs in cancer.

Function Follows Form: Oriented Substrate Nanotopography Overrides Neurite-Repulsive Schwann Cell-Astrocyte Barrier Formation in an In Vitro Model of Glial Scarring.

Schwann cell (SC) transplantation represents a promising therapeutic approach for traumatic spinal cord injury but is frustrated by barrier formation, preventing cell migration, and axonal regeneration at the interface between grafted SCs and reactive resident astrocytes (ACs). Although regenerating axons successfully extend into SC grafts, only a few cross the SC-AC interface to re-enter lesioned neuropil. To date, research has focused on identifying and modifying the molecular mechanisms underlying such scarring cell-cell interactions, while the influence of substrate topography remains largely unexplored. Using a recently modified cell confrontation assay to model SC-AC barrier formation in vitro, highly oriented poly(ε-caprolactone) nanofibers were observed to reduce AC reactivity, induce extensive oriented intermingling between SCs and ACs, and ultimately enable substantial neurite outgrowth from the SC compartment into the AC territory. It is anticipated that these findings will have important implications for the future design of biomaterial-based scaffolds for nervous tissue repair.

[Fatigue in chronic physical diseases]. / Fatigue bei chronisch körperlichen Erkrankungen.

The term fatigue is used to describe states of unusual tiredness and exhaustion that can occur in connection with various chronic diseases, particularly cancer, multiple sclerosis, Parkinson's disease and rheumatoid arthritis. In contrast to states of exhaustion in healthy people, fatigue is characterized by the fact that it can last for long periods, is disproportionate to previous activities and does not subside after recovery phases. Fatigue is described as a multidimensional problem that encompasses physical, emotional and cognitive aspects and is associated with a high level of subjective suffering. Depending on the severity and course of the symptoms, fatigue is associated with a severely reduced quality of life and it impairs participation and coping with everyday life. It also makes professional reintegration and reemployment more difficult. Although we cannot yet fully explain the aetiology and pathogenesis, fatigue in physical illnesses must be understood based on a multifactorial biopsychosocial model. The possibilities of diagnostics and an overview of various measures for clarifying fatigue are presented. The challenges for medical care are also outlined and advice is given on how to deal with them in everyday clinical practice.

Age-adjusted high-dose chemotherapy followed by autologous stem cell transplantation or conventional chemotherapy with R-MP as first-line treatment in elderly primary CNS lymphoma patients - the randomized phase III PRIMA-CNS trial.

BACKGROUND: Older primary central nervous system lymphoma (PCNSL) patients have an inferior prognosis compared to younger patients because available evidence on best treatment is scarce and treatment delivery is challenging due to comorbidities and reduced performance status. High-dose chemotherapy and autologous stem cell transplantation (HCT-ASCT) after high-dose methotrexate (MTX)-based immuno-chemotherapy has become an increasingly used treatment approach in eligible elderly PCNSL patients with promising feasibility and efficacy, but has not been compared with conventional chemotherapy approaches. In addition, eligibility for HCT-ASCT in elderly PCNSL is not well defined. Geriatric assessment (GA) may be helpful in selecting patients for the best individual treatment choice, but no standardized GA exists to date. A randomized controlled trial, incorporating a GA and comparing age-adapted HCT-ASCT treatment with conventional chemotherapy is needed. METHODS: This open-label, multicenter, randomized phase III trial with two parallel arms will recruit 310 patients with newly diagnosed PCNSL > 65 years of age in 40 centers in Germany and Austria. The primary objective is to demonstrate that intensified chemotherapy followed by consolidating HCT-ASCT is superior to conventional chemotherapy with rituximab, MTX, procarbazine (R-MP) followed by maintenance with procarbazine in terms of progression free survival (PFS). Secondary endpoints include overall survival (OS), event free survival (EFS), (neuro-)toxicity and quality of life (QoL). GA will be conducted at specific time points during the course of the study. All patients will be treated with a pre-phase rituximab-MTX (R-MTX) cycle followed by re-assessment of transplant eligibility. Patients judged transplant eligible will be randomized (1:1). Patients in arm A will be treated with 3 cycles of R-MP followed by maintenance therapy with procarbazine for 6 months. Patients in arm B will be treated with 2 cycles of MARTA (R-MTX/AraC) followed by busulfan- and thiotepa-based HCT-ASCT. DISCUSSION: The best treatment strategy for elderly PCNSL patients remains unknown. Treatments range from palliative to curative but more toxic therapies, and there is no standardized measure to select patients for the right treatment. This randomized controlled trial will create evidence for the best treatment strategy with the focus on developing a standardized GA to help define eligibility for an intensive treatment approach. TRIAL REGISTRATION: German clinical trials registry DRKS00024085 registered March 29, 2023.

Caring for dependent children impacts practical and emotional problems and need for support, but not perceived distress among cancer patients.

OBJECTIVE: More than one in 10 cancer patients care for dependent children. It is unclear whether this status makes a difference in terms of the distress and associated problems they experience, or whether it is linked to differences in the need for or utilization of psychosocial support. METHODS: Secondary analysis of a cross-sectional German study in National Comprehensive Cancer Centers using self-report standardized questionnaires administered to inpatients. Patients living with dependent children (n = 161) were matched by age and sex with a subsample of 161 cancer patients not living with dependent children. The resulting sample was tested for between-group differences in Distress Thermometer (DT) scores and the corresponding DT Problem List. Additionally, between-group differences in measures of the need for and utilization of psychosocial support were examined. RESULTS: More than 50% of all patients suffered from clinically relevant distress. Patients living with dependent children reported significantly more practical (p < 0.001, η2 p = 0.04), family (p < 0.001, η2 p = 0.03), and emotional problems (p < 0.001, η2 p = 0.01). Although reporting a greater need for psychological support, parents with cancer were not found to more frequently utilize any type of psychosocial support. CONCLUSIONS: The specific problems and needs of parents with cancer who care for dependent children are currently not sufficiently addressed in the clinical care pathways. All families should be helped to establish open and honest communication as well as understand the available support systems and what they can provide. Tailored interventions should be implemented for highly distressed families.

Skin biopsy reveals generalized small fibre neuropathy in hypermobile Ehlers-Danlos syndromes.

BACKGROUND AND PURPOSE: Ehlers-Danlos syndromes are hereditary disorders of connective tissue that are characterized by joint hypermobility, skin hyperextensibility and tissue fragility. The most common subtype is the hypermobile type. In addition to symptoms of small fibre neuropathy (SFN) due to damage to the small peripheral nerve fibres, with degeneration of the distal nerve endings, autonomic disorders such as postural tachycardia syndrome (PoTS) are frequently reported features in patients with hypermobile Ehlers-Danlos syndrome (hEDS). To date, the underlying pathophysiological mechanisms are still not completely understood. STUDY PURPOSE: To better understand pathophysiological mechanisms of small fiber neuropathy and autonomic neuropathy in hypermobile Ehlers-Danlos Syndromes. METHODS: We prospectively investigated 31 patients with hEDS compared to 31 healthy controls by using skin biopsy, quantitative sensory testing, tilt-table testing, the painDetect, Small Fibre Neuropathy Screening List and the COMPASS-31 (Composite Autonomic Symptom Score 31) questionnaire. RESULTS: Nineteen (61%) patients with hEDS were diagnosed with SFN, and 10 (32%) fulfilled the criteria for PoTS. Patients with hEDS had significantly higher heart rates than controls. According to quantitative sensory testing, these patients had generalized thermal and tactile hypesthesia. Skin biopsy revealed significantly reduced intraepithelial nerve fibre density proximally (thigh) and distally (lower leg) in patients compared to controls. This was consistent with various complaints of pain and sensory disturbances in both the proximal and distal body regions. CONCLUSION: These results confirm histologically proven SFN as a common feature in patients with hEDS, revealing a generalized distribution of nerve fibre loss. Regarding the frequently reported autonomic and neuropathic dysfunctions, the findings support SFN as an important, but not the only, underlying pathomechanism.

[Need for Further Training for Function Holders of Cancer Self-Help Organizations]. / Bedarf an Fortbildung für Funktionsträger*innen von Krebs-Selbsthilfeorganisationen.

OBJECTIVE: As part of the Center for Competence Development in Cancer Self-Help at the University Medical Center Freiburg, an analysis of the need for training and education was conducted among the member organizations of the House of the Cancer Patient Support Associations of Germany (HKSH). METHODS: The online survey took place from February to April 2021 and was completed by functionaries at various organization levels and group members. In a questionnaire developed together with self-help representatives 19 potential training topics were ranked in terms of importance. In addition, it was indicated whether the respective topic was perceived as sufficiently covered by already existing qualification offers. Using a forced-choice approach, respondents finally named the five most important topics for them. RESULTS: The topics that a particularly high proportion of the N=293 respondents identified as "very important" and which at the same time were perceived as inadequately addressed by existing qualification offers were dealing with stressful issues (e. g. relapse, metastases, dying), recruiting new members and successors for association tasks, socio-legal aspects, as well as conversational and communication skills. In the prioritization of the five most important topics, the first three topics were named again, with dealing with excessive demands and assistance for self-care/burnout prevention following in fourth place and in the fifth place the topics of knowledge in dealing with complementary medicine and knowledge of professional care structures in oncology, each with the same number of votes. DISCUSSION: There was a clear need for a broad range of training topics that goes beyond the existing offers of the cancer self-help organizations. Through the needs analysis, the topics could be identified which are prioritized as training topics across all ten member organizations of the HKSH. CONCLUSION: Based on this needs assessment, the respective training courses can be prioritized and implemented in cooperation with the patient representatives of the HKSH.

PolyGA targets the ER stress-adaptive response by impairing GRP75 function at the MAM in C9ORF72-ALS/FTD.

ER stress signaling is linked to the pathophysiological and clinical disease manifestations in amyotrophic lateral sclerosis (ALS). Here, we have investigated ER stress-induced adaptive mechanisms in C9ORF72-ALS/FTD, focusing on uncovering early endogenous neuroprotective mechanisms and the crosstalk between pathological and adaptive responses in disease onset and progression. We provide evidence for the early onset of ER stress-mediated adaptive response in C9ORF72 patient-derived motoneurons (MNs), reflected by the elevated increase in GRP75 expression. These transiently increased GRP75 levels enhance ER-mitochondrial association, boosting mitochondrial function and sustaining cellular bioenergetics during the initial stage of disease, thereby counteracting early mitochondrial deficits. In C9orf72 rodent neurons, an abrupt reduction in GRP75 expression coincided with the onset of UPR, mitochondrial dysfunction and the emergence of PolyGA aggregates, which co-localize with GRP75. Similarly, the overexpression of PolyGA in WT cortical neurons or C9ORF72 patient-derived MNs led to the sequestration of GRP75 within PolyGA inclusions, resulting in mitochondrial calcium (Ca2+) uptake impairments. Corroborating these findings, we found that PolyGA aggregate-bearing human post-mortem C9ORF72 hippocampal dentate gyrus neurons not only display reduced expression of GRP75 but also exhibit GRP75 sequestration within inclusions. Sustaining high GRP75 expression in spinal C9orf72 rodent MNs specifically prevented ER stress, normalized mitochondrial function, abrogated PolyGA accumulation in spinal MNs, and ameliorated ALS-associated behavioral phenotype. Taken together, our results are in line with the notion that neurons in C9ORF72-ALS/FTD are particularly susceptible to ER-mitochondrial dysfunction and that GRP75 serves as a critical endogenous neuroprotective factor. This neuroprotective pathway, is eventually targeted by PolyGA, leading to GRP75 sequestration, and its subsequent loss of function at the MAM, compromising mitochondrial function and promoting disease onset.

Patient competencies, coping self-efficacy, and coping: Do they change during oncological inpatient rehabilitation and beyond?

OBJECTIVE: The construct of Patient Competencies (PCs) has been suggested to allow a more comprehensive understanding of cancer patients' abilities to confront emotion- and problem-focused coping tasks arising from the diagnosis, treatment and survivorship of cancer. While providing a reliable and valid measure of PCs, research thus far has not clarified whether PCs change across time and/or through intervention. This study asks whether PCs change during oncological inpatient rehabilitation and beyond. METHODS: N = 377 breast, colorectal, and prostate cancer patients from clinics for oncological rehabilitation were included to complete self-report measures of PC, coping and self-efficacy for coping with cancer at the beginning and the end of rehabilitation and 9 months afterward. In order to determine differences between tumor diagnostic groups and changes across time 3 (tumor site) x 3 (time) repeated measures analyses of variance were computed. RESULTS: Tumor diagnostic groups differed only marginally in PCs, coping self-efficacy and coping. The PCs of self-regulation and managing distress and coping self-efficacy improved slightly during rehabilitation but returned to initial levels at 9 months. Differential improvement was evident in the competencies of seeking information and interest in social services. Two of five coping behaviors decreased markedly from the end of rehabilitation to follow-up. CONCLUSIONS: This study suggests that oncological inpatient rehabilitation may contribute to advancing PCs, albeit to a limited extent. Aside from addressing conceptual, diagnostic and measurement issues, future research should clarify which interventions may be most effective for advancing problem- and emotion-focused PCs.

Return to work after cancer: Improved mental health in working cancer survivors.

OBJECTIVE: Aim of the study was to compare working and non-working patients over a period of 12 months regarding socio-demographic, cancer-specific and mental health parameters. METHODS: This study was conducted as part of a Germany-wide longitudinal survey among 1398 patients in 13 national Comprehensive Cancer Centers. The sample used for analysis consisted of n = 430 cancer patients younger than 65 years (age M = 52.4 years, SD = 8.1; 67.0% females). Socio-demographic, cancer-specific and mental health parameters (Depression: Patient Health Questionnaire, Anxiety: Generalized Anxiety Disorder Scale, Distress: Distress Thermometer) were assessed at baseline during hospitalization and at 12 months follow-up. RESULTS: 73.7% of all patients (n = 317) have returned to work after one year. While working and non-working patients did not differ in socio-demographic parameters, there were significant differences in the presence of metastases, tumor and treatment status. Mixed analysis of variances revealed significant interactions between working status and time for depression (p = 0.009), anxiety (p = 0.003) and distress (p = 0.007). Non-working patients reported higher levels of depression, anxiety and distress than working patients over time. A logistic regression showed significant associations between lower depression (p = 0.019), lower distress (p = 0.033) and the absence of a tumor (p = 0.015) with working status. CONCLUSIONS: The majority of cancer survivors returned to work. Non-working patients had higher levels of depression, anxiety and distress than working patients. After controlling for cancer-specific factors, mental health parameters were still independently associated with working status. Return to work can thus be associated with an improved mental health in cancer survivors. In order to establish causality, further research is necessary.

Risk perception, treatment adherence, and personality during COVID-19 pandemic: An international study on cancer patients.

OBJECTIVE: To explore the role of personality traits in moderating the relation between COVID-19 risk perception and treatment adherence, and between risk perception and psychosocial distress in patients diagnosed with cancer. METHODS: An online survey (n = 1281) was conducted worldwide in seven countries (Austria, Germany, Hong Kong, Italy, Spain, Sweden, and Turkey). Inclusion criteria were to be 18 years of age or older, have received a cancer diagnosis, and be in treatment or follow-up. A few moderated regression models were performed with both personality traits and Hierarchical Taxonomy of Psychopathology super-spectra as moderators. RESULTS: Detachment, negative affectivity, psychoticism and all the super-spectra significantly moderated the relation between coronavirus risk perception and psychosocial distress, after the adjusting effect of confidence in safeguards. Only negative affectivity moderated the association between coronavirus risk perception and treatment adherence. CONCLUSIONS: Personality traits may foster the understanding of how a patient might adjust to cancer treatment and, more generically, to highly stressful events such as the COVID-19 pandemic. Further research is needed to confirm the results in different cancer stages and types.

A serum microRNA sequence reveals fragile X protein pathology in amyotrophic lateral sclerosis.

Knowledge about converging disease mechanisms in the heterogeneous syndrome amyotrophic lateral sclerosis (ALS) is rare, but may lead to therapies effective in most ALS cases. Previously, we identified serum microRNAs downregulated in familial ALS, the majority of sporadic ALS patients, but also in presymptomatic mutation carriers. A 5-nucleotide sequence motif (GDCGG; D = G, A or U) was strongly enriched in these ALS-related microRNAs. We hypothesized that deregulation of protein(s) binding predominantly to this consensus motif was responsible for the ALS-linked microRNA fingerprint. Using microRNA pull-down assays combined with mass spectrometry followed by extensive biochemical validation, all members of the fragile X protein family, FMR1, FXR1 and FXR2, were identified to directly and predominantly interact with GDCGG microRNAs through their structurally disordered RGG/RG domains. Preferential association of this protein family with ALS-related microRNAs was confirmed by in vitro binding studies on a transcriptome-wide scale. Immunohistochemistry of lumbar spinal cord revealed aberrant expression level and aggregation of FXR1 and FXR2 in C9orf72- and FUS-linked familial ALS, but also patients with sporadic ALS. Further analysis of ALS autopsies and induced pluripotent stem cell-derived motor neurons with FUS mutations showed co-aggregation of FXR1 with FUS. Hence, our translational approach was able to take advantage of blood microRNAs to reveal CNS pathology, and suggests an involvement of the fragile X-related proteins in familial and sporadic ALS already at a presymptomatic stage. The findings may uncover disease mechanisms relevant to many patients with ALS. They furthermore underscore the systemic, extra-CNS aspect of ALS.

Bi-allelic truncating mutations in VWA1 cause neuromyopathy.

The von Willebrand Factor A domain containing 1 protein, encoded by VWA1, is an extracellular matrix protein expressed in muscle and peripheral nerve. It interacts with collagen VI and perlecan, two proteins that are affected in hereditary neuromuscular disorders. Lack of VWA1 is known to compromise peripheral nerves in a Vwa1 knock-out mouse model. Exome sequencing led us to identify bi-allelic loss of function variants in VWA1 as the molecular cause underlying a so far genetically undefined neuromuscular disorder. We detected six different truncating variants in 15 affected individuals from six families of German, Arabic, and Roma descent. Disease manifested in childhood or adulthood with proximal and distal muscle weakness predominantly of the lower limbs. Myopathological and neurophysiological findings were indicative of combined neurogenic and myopathic pathology. Early childhood foot deformity was frequent, but no sensory signs were observed. Our findings establish VWA1 as a new disease gene confidently implicated in this autosomal recessive neuromyopathic condition presenting with child-/adult-onset muscle weakness as a key clinical feature.

Self-reported fatigue in patients with rheumatoid arthritis compared to patients with cancer: results from two large-scale studies.

Fatigue is a common symptom in patients with rheumatoid arthritis (RA) and in patients with cancer (CA). The aim was to investigate the degree of fatigue in RA patients as compared to CA patients as well as potential influencing factors on RA-related fatigue. This was a retrospective analyses of two prospective cohort studies that used the EORTC QLQ-FA12 as a common instrument to assess fatigue. The cohort of RA patients was based on a nationwide survey in Germany. The cohort of CA patients was recruited in the context of an international validation field study. Multivariable ANCOVAs compared levels of fatigue between the two cohorts, also including various subgroup analyses. Regression analyses explored influencing factors on RA patients' fatigue. Data of n = 705 RA patients and of n = 943 CA patients were available for analyses. RA patients reported significantly higher Physical Fatigue (mean difference = 7.0, 95% CI 4.2-9.7, p < 0.001) and Social Sequelae (mean difference = 7.5, 95% CI 4.7-10.2, p < 0.001). CA patients reported higher Cognitive Fatigue (mean difference = 3.5, 95% CI 1.4-5.6, p = 0.001). No differences in Emotional Fatigue (p = 0.678) and Interference with Daily Life (p = 0.098) were found. In RA patients, mental health and pain were associated with fatigue (p values < 0.001). RA patients showed a considerable level of fatigue that is comparable to and in certain cases even higher than that of CA patients. The implementation of standardized diagnostic procedures and interventions to reduce fatigue in RA patients are recommended.

Utilisation of complementary medicine in cancer patients and survivors: Expected benefits and its association to psychosocial factors.

INTRODUCTION: Previous research showed that various factors are associated with the use of complementary medicine (CM) in cancer patients. This study aimed to analyse the expected benefits of CM use in its association with medical, sociodemographic and psychosocial variables. METHODS: In a cross-sectional survey, we assessed the use of CM, expected benefits of CM, depression and quality of life. An exploratory factor analysis (EFA) was performed. Multiple regression analysis was carried out with the factors derived from the EFA as dependent variables. RESULTS: Based on 292 cancer CM user, EFA revealed two factors: a supportive effect (SPE) and an antitumoral effect (ATE). In the multiple regression analysis, reduced emotional functioning and the diagnosis of breast cancer are associated with the higher expectation of a supportive effect of CM (p < 0.001), explaining 7.1% of the variance. Emotional functioning, educational level and metastases are associated with higher expectation of an antitumoral effect of CM (p < 0.001) and explained 14.8% of the variance. DISCUSSION: This study provides evidence that two overall domains (supportive effect and anti-tumoural effect) characterise the benefits of CM expected by cancer patients. Psychosocial and medical variables are associated with both domains, but explain only small proportion of the variance.