Modelling Successful Self-Management in Adults With Cystic Fibrosis: Vicarious Self-Efficacy From Videos of 'People Like Me'.

Background Self-efficacy is an important determinant of treatment adherence, and peer modelling of success can provide vicarious self-efficacy. A series of patient stories ('talking heads' videos) were developed with people with cystic fibrosis (CF) as part of the CFHealthHub multi-component adherence intervention, aiming to demonstrate success with daily therapy in 'people like me'. Methodology One-to-one semi-structured interviews exploring patients' experiences, barriers and facilitators of nebuliser adherence were audio and video-recorded between October 2015 and August 2016. Interview transcripts were reviewed to identify descriptions of problem-solving and sustained treatment success. Positive stories potentially providing vicarious descriptions of success were selected as video clips. Results In total, 14 adults with CF were recruited from five UK CF centres. Each participant contributed a median of five (interquartile range: 3-6) video clips, and a total of 57 unique clips were uploaded onto the CFHealthHub digital platform. Nine of those clips spanned two categories, hence, there were 66 clips across 16 categories. Conclusions The videos were well received though some adults were concerned that comparisons with peers might create anxiety by highlighting the possibility of future decline or current relative underperformance. It is important to sensitively support choice when providing resources aiming to increase vicarious self-efficacy. Our experience may guide the development of similar videos for people with other long-term conditions.

Caring for care: Online feedback in the context of public healthcare services.

People increasingly provide feedback about healthcare services online. These practices have been lauded for enhancing patient power, choice and control, encouraging greater transparency and accountability, and contributing to healthcare service improvement. Online feedback has also been critiqued for being unrepresentative, spreading inaccurate information, undermining care relations, and jeopardising professional autonomy. Through a thematic analysis of 37 qualitative interviews, this paper explores the relationship between online feedback and care improvement as articulated by healthcare service users (patients and family members) who provided feedback across different online platforms and social media in the UK. Online feedback was framed by interviewees as, ideally, a public and, in many cases, anonymous 'conversation' between service users and healthcare providers. These 'conversations' were thought of not merely as having the potential to bring about tangible improvements to healthcare, but as in themselves constituting an improvement in care. Vital to this was the premise that providing feedback was an enactment of care - care for other patients, certainly, but also care for healthcare as such and even for healthcare professionals. Ultimately, feedback was understood as an enactment of care for the National Health Service (NHS), as symbolically encompassing all of the above. Putting these findings in dialogue with STS scholarship on care, we argue that, in this context, the provision of online feedback can be understood as a form of care that is, simultaneously, both directed at healthcare (in the round, including patients, professionals, services, organisations, and, of course, health itself) and part of healthcare. We conceptualise this as 'caring for care'. This conceptualization moves beyond dominant framings of online feedback in terms of 'choice' and 'voice'. It embeds online feedback within pre-existing healthcare systems, relations and moral commitments, foregrounds the mutuality of care relations, and draws attention to the affective labour of feedback practices.

Pre-symptomatic detection of COVID-19 from smartwatch data.

Consumer wearable devices that continuously measure vital signs have been used to monitor the onset of infectious disease. Here, we show that data from consumer smartwatches can be used for the pre-symptomatic detection of coronavirus disease 2019 (COVID-19). We analysed physiological and activity data from 32 individuals infected with COVID-19, identified from a cohort of nearly 5,300 participants, and found that 26 of them (81%) had alterations in their heart rate, number of daily steps or time asleep. Of the 25 cases of COVID-19 with detected physiological alterations for which we had symptom information, 22 were detected before (or at) symptom onset, with four cases detected at least nine days earlier. Using retrospective smartwatch data, we show that 63% of the COVID-19 cases could have been detected before symptom onset in real time via a two-tiered warning system based on the occurrence of extreme elevations in resting heart rate relative to the individual baseline. Our findings suggest that activity tracking and health monitoring via consumer wearable devices may be used for the large-scale, real-time detection of respiratory infections, often pre-symptomatically.

Involving service users in the qualitative analysis of patient narratives to support healthcare quality improvement.

PLAIN ENGLISH SUMMARY: Patient or user involvement in health research is well-established but is often limited to advising on research questions and design, leaving researchers to collect and analyse 'data' (which in this paper means written copies of interviews with patients about their experiences). We were working with sets of interviews with 1) young people with depression and 2) people with experiences of stroke. We were looking for key themes that it would be useful for the NHS to know about, and we developed short films which healthcare staff can use to think about how to make care more patient-centred. We wanted to see what user involvement in this analysis would bring, and how best to achieve it practically.After the researcher team had analysed the interviews, we ran two one-day workshops with people with relevant experience as a patient/service user or carer. We gave them some brief training in how to analyse interviews and how they might be used for improving the quality of care. Then we looked at extracts from the interviews, and discussed whether people could see the same themes as the researcher.People identified similar themes to the researcher, but also identified new details the researcher had missed. However, they felt reading large amounts of text was not the best way to use their time and experience. Instead they recommended that a better approach would be for a researcher to meet with a group of users at the start of analysis, to discuss what to look out for. ABSTRACT: Background Patient or user involvement in health research is a well-established principle. However, involvement is often limited to advising on research questions and design, leaving researchers to complete data collection and analysis. Involvement in data analysis is one of the most challenging, least well-explored aspects of involvement. Qualitative interview data forms high volumes of rich, complex material which can be daunting to work with.Analysing narrative interviews with patients is central to a patient-centred quality improvement method called experience-based co-design. The analysis identifies 'touchpoints' - key moments of healthcare experiences - and leads to the production of a 'trigger film' to spark codesign discussions between patients and staff. We wanted to see what user involvement in this analysis would bring, and how best to achieve it. Methods As part of a wider secondary analysis study to create new trigger films, we re-analysed interview transcripts on experiences of young people with depression and experiences of stroke. We then ran two workshops with people with relevant lived experience, working with extracts from the same materials after brief training. Results People involved in the workshops identified similar themes to the researcher, but also brought some new insights. While they engaged easily with the materials selected, we under-estimated how much time it would take people to work through these. Discussion and sharing experiences and perspectives were highly valued in the first workshop. In the second workshop, we therefore started with group discussion, based on people's own experience, of what they thought the touchpoints would be, and later viewed a draft trigger film together to see how it compared. Conclusions Those involved felt that while analysing transcripts was possible in small quantities, it was not best use of their time. We suggest that conversation, rather than data, is at the heart of user involvement in analysis. One way to retain the value of lived experience in the analytic process, without over-burdening people with data, is to elicit user reflections on their experience at the start of analysis, and use this as a guide to direct both researcher and service user attention during the remainder of the process.

" I've said I wish I was dead, you'd be better off without me": A systematic review of people's experiences of living with severe asthma.

OBJECTIVE: Our aim was to conduct a systematic review and synthesis of qualitative evidence exploring the lived experience of adults with severe asthma. DATA SOURCES: We searched MEDLINE via OvidSP, PsycINFO via OvidSP, PubMed, CINAHL, EMBASE, Sociological Abstracts, Google Scholar, the journals Qualitative Health Research and Qualitative Research, and a study of experiences of living with asthma by the Health Experiences Research group. STUDY SELECTIONS: Studies were included if they used qualitative methods and explored the subjective experiences of adults (≥18 years) with a clear diagnosis of severe asthma. RESULTS: From 575 identified studies, five met the inclusion criteria. Synthesis revealed an overarching theme of efforts that people living with severe asthma engage in to achieve personal control over their condition. Individuals 'strive for autonomy' through dealing with symptoms and treatment, acquiring knowledge, making decisions and reclaiming identity. CONCLUSION: This systematic review found a paucity of qualitative studies reporting on people's perspectives of living with severe asthma, and a focus on clinical rather than personal issues. Our synthesis reveals that severe asthma was disempowering, and a threat to identity and life roles. What was important to people living with severe asthma was striving to achieve a greater level of personal control over their condition, but these efforts received little support from their healthcare providers. Thus, more attention should be paid to understanding the self-management strategies and personal goals of people living with severe asthma. This may assist in designing interventions to better support patient self-management and improve health outcomes.

Barriers to a software reminder system for risk assessment of stroke in atrial fibrillation: a process evaluation of a cluster randomised trial in general practice.

BACKGROUND: Oral anticoagulants reduce the risk of stroke in patients with atrial fibrillation (AF), but are underused. AURAS-AF (AUtomated Risk Assessment for Stroke in AF) is a software tool designed to identify eligible patients and promote discussions within consultations about initiating anticoagulants. AIM: To investigate the implementation of the software in UK general practice. DESIGN AND SETTING: Process evaluation involving 23 practices randomly allocated to use AURAS-AF during a cluster randomised trial. METHOD: An initial invitation to discuss anticoagulation was followed by screen reminders appearing during consultations until a decision had been made. The reminders required responses, giving reasons for cases where an anticoagulant was not initiated. Qualitative interviews with clinicians and patients explored acceptability and usability. RESULTS: In a sample of 476 patients eligible for the invitation letter, only 159 (33.4%) were considered suitable for invitation by their GPs. Reasons given were frequently based on frailty, and risk of falls or haemorrhage. Of those invited, 35 (22%) started an anticoagulant (7.4% of those originally identified). A total of 1695 main-screen reminders occurred in 940 patients. In 883 instances, the decision was taken not to initiate and a range of reasons offered. Interviews with 15 patients and seven clinicians indicated that the intervention was acceptable, though the issue of disruptive screen reminders was raised. CONCLUSION: Automated risk assessment for stroke in atrial fibrillation and prompting during consultations are feasible and generally acceptable, but did not overcome concerns about frailty and risk of haemorrhage as barriers to anticoagulant uptake.

A licence to drive? Neurological illness, loss and disruption.

The sense of freedom and independence that being able to drive generates may be taken for granted by many until it is threatened by illness. Drawing on the 'mobility turn' in social sciences that emphasises the social and emotional significance of the car (Sheller and Urry , ), this article presents secondary analysis of narratives of driving and its significance across four neurological conditions (epilepsy, Parkinson's disease, transient ischaemic attack and motor neurone disease). Taking an interactionist approach we explore how the withdrawal of a driving licence can represent not just a practical and emotional loss of independence, but also loss of enjoyment; of a sense and feeling of 'normal' adulthood and social participation; and of an identity (in some cases gendered) of strength and power. Conversely the ability to keep driving can maintain an unbroken thread of narrative, for example enabling people with speech difficulties to feel and look normal behind the wheel. Moments of pleasure and normality illuminate the importance of examining the micro-strands of disruption illness can cause.

Untimely illness: When diagnosis does not match age-related expectations.

BACKGROUND: We explore the concept of "untimely diagnosis," where the onset of a long-term condition occurs at a life stage which does not conform to traditional expectations, focusing on two conditions (asthma and arthritis) typically associated with a particular life stage (childhood and older adulthood, respectively). Previous literature has focused on the meaning of chronic illness in terms of life history, and the biographical lens has been used in various ways to make sense of the experience. Less attention has been paid to the condition onset when it seems dissonant with chronological age. METHODS: Secondary analysis of two qualitative data sets (total 58 interviews) exploring the experiences of people with adult-onset asthma and young people diagnosed with arthritis. Data from the original interview transcripts relating to diagnosis and symptom recognition were re-analysed using a "candidacy" framework to examine how age and diagnosis intersect. RESULTS: People did not always assert their candidacy for either condition because of pre-conceived expectations around age. Similarly, health professionals sometimes failed to recognize patients' candidacy, instead pursuing "age-plausible" possibilities. In some cases, participants were proactive in suggesting a diagnosis to the health professional where diagnosis was delayed. CONCLUSION: The diagnosis of adult-onset asthma, and arthritis in young people, may be regarded as "untimely." We suggest that being diagnosed with what is perceived to be a "childhood" condition in adulthood, or "an older person's" condition in childhood, may be viewed as a "biographical paradox" and an "untimely breach" to the expected order.

"This illness diminishes me. What it does is like theft": A qualitative meta-synthesis of people's experiences of living with asthma.

BACKGROUND: What matters to people in their everyday experiences of living with asthma is influenced by a diverse range of personal, social, medical and environmental factors. Previous reviews of the asthma literature have largely focused on medical aspects of asthma or specific population groups with particular needs. OBJECTIVE: To identify, describe and synthesize from the available qualitative literature the views and experiences of adults living with asthma. METHOD: We systematically searched for qualitative studies reporting on the personal experience of living with asthma. A meta-synthesis approach was used to analyse and interpret the data. Key themes relating to personal perspectives on asthma were identified and grouped into overarching concepts. RESULTS: We identified 26 studies. There was a paucity of literature on the physical burden of asthma symptoms and the role of social support. Our synthesis generated a central concept of the "work" associated with living with asthma: work was of a personal nature, and at times an intensely emotional experience. Individuals tailored their behaviour in response to demands of the physical and social environment, including interactions with health-care professionals. CONCLUSION: This is the first systematic review of the qualitative literature reporting on people's own perspectives of living with asthma. Our findings draw attention to the nuances and sensitivities surrounding patient experiences of self-management. Medical care is a central plank of managing chronic conditions, but our health-care systems are now expected to deliver patient-centred care. Considering the broader aspects of asthma management, beyond that of symptoms and treatment, will help to facilitate comprehensive care.

Automated Software System to Promote Anticoagulation and Reduce Stroke Risk: Cluster-Randomized Controlled Trial.

BACKGROUND AND PURPOSE: Oral anticoagulants (OAC) substantially reduce risk of stroke in atrial fibrillation, but uptake is suboptimal. Electronic health records enable automated identification of people at risk but not receiving treatment. We investigated the effectiveness of a software tool (AURAS-AF [Automated Risk Assessment for Stroke in Atrial Fibrillation]) designed to identify such individuals during routine care through a cluster-randomized trial. METHODS: Screen reminders appeared each time the electronic health records of an eligible patient was accessed until a decision had been taken over OAC treatment. Where OAC was not started, clinicians were prompted to indicate a reason. Control practices continued usual care. The primary outcome was the proportion of eligible individuals receiving OAC at 6 months. Secondary outcomes included rates of cardiovascular events and reports of adverse effects of the software on clinical decision-making. RESULTS: Forty-seven practices were randomized. The mean proportion-prescribed OAC at 6 months was 66.3% (SD=9.3) in the intervention arm and 63.9% (9.5) in the control arm (adjusted difference 1.21% [95% confidence interval -0.72 to 3.13]). Incidence of recorded transient ischemic attack was higher in the intervention practices (median 10.0 versus 2.3 per 1000 patients with atrial fibrillation; P=0.027), but at 12 months, we found a lower incidence of both all cause stroke (P=0.06) and hemorrhage (P=0.054). No adverse effects of the software were reported. CONCLUSIONS: No significant change in OAC prescribing occurred. A greater rate of diagnosis of transient ischemic attack (possibly because of improved detection or overdiagnosis) was associated with a reduction (of borderline significance) in stroke and hemorrhage over 12 months. CLINICAL TRIAL REGISTRATION: URL: http://www.isrctn.com. Unique Identifier: ISRCTN55722437.

DIETFITS study (diet intervention examining the factors interacting with treatment success) - Study design and methods.

Numerous studies have attempted to identify successful dietary strategies for weight loss, and many have focused on Low-Fat vs. Low-Carbohydrate comparisons. Despite relatively small between-group differences in weight loss found in most previous studies, researchers have consistently observed relatively large between-subject differences in weight loss within any given diet group (e.g., ~25kg weight loss to ~5kg weight gain). The primary objective of this study was to identify predisposing individual factors at baseline that help explain differential weight loss achieved by individuals assigned to the same diet, particularly a pre-determined multi-locus genotype pattern and insulin resistance status. Secondary objectives included discovery strategies for further identifying potential genetic risk scores. Exploratory objectives included investigation of an extensive set of physiological, psychosocial, dietary, and behavioral variables as moderating and/or mediating variables and/or secondary outcomes. The target population was generally healthy, free-living adults with BMI 28-40kg/m2 (n=600). The intervention consisted of a 12-month protocol of 22 one-hour evening instructional sessions led by registered dietitians, with ~15-20 participants/class. Key objectives of dietary instruction included focusing on maximizing the dietary quality of both Low-Fat and Low-Carbohydrate diets (i.e., Healthy Low-Fat vs. Healthy Low-Carbohydrate), and maximally differentiating the two diets from one another. Rather than seeking to determine if one dietary approach was better than the other for the general population, this study sought to examine whether greater overall weight loss success could be achieved by matching different people to different diets. Here we present the design and methods of the study.

'I knew before I was told': Breaches, cues and clues in the diagnostic assemblage.

Diagnosis can be both a 'diagnostic moment', but also a process over time. This paper uses secondary analysis of narrative interviews on ovarian cancer, antenatal screening and motor neurone disease to explore how people relate assembling procedural, spatial and interactional evidence before the formal diagnostic moment. We offer the idea of a diagnostic assemblage to capture the ways in which individuals connect to and re-order signs and events that come to be associated with their bodies. Building on the empirical work of Poole and Lyne (2000) in the field of breast cancer diagnosis, we identify how patients describe being alerted to their diagnosis, either through 'clues' they report picking up (often inadvertently) or through 'cues', perceived as a more intentional prompt given by a health professional, or an organisational process. For patients, these clues frequently represent a breach in the expected order of their encounter with healthcare. Even seemingly mundane episodes or behaviours take on meanings which health professionals may not themselves anticipate. Our findings speak to an emergent body of work demonstrating that experiences of formal healthcare during the lead-up to diagnosis shape patients' expectations, degree of trust in professionals, and even health outcomes.

Narrative interviewing.

Introduction Narrative interviews place the people being interviewed at the heart of a research study. They are a means of collecting people's own stories about their experiences of health and illness. Narrative interviews can help researchers to better understand people's experiences and behaviours. Narratives may come closer to representing the context and integrity of people's lives than more quantitative means of research. Methodology Researchers using narrative interview techniques do not set out with a fixed agenda, rather they tend to let the interviewee control the direction, content and pace of the interview. The paper describes the interview process and the suggested approach to analysis of narrative interviews, We draw on the example from a study that used series of narrative interviews about people's experiences of taking antidepressants. Limitations Some people may find it particularly challenging to tell their story to a researcher in this way rather than be asked a series of questions like in a television or radio interview. Narrative research like all qualitative research does not set out to be generalisable and may only involve a small set of interviews.

"My dirty little habit": Patient constructions of antidepressant use and the 'crisis' of legitimacy.

Discontents surrounding depression are many, and include concerns about a creeping appropriation of everyday kinds of misery; divergent opinions on the diagnostic category(ies); and debates about causes and appropriate treatments. The somewhat mixed fortunes of antidepressants - including concerns about their efficacy, overuse and impacts on personhood - have contributed to a moral ambivalence around antidepressant use for people with mental health issues. Given this, we set out to critically examine how antidepressant users engage in the moral underpinnings of their use, especially how they ascribe legitimacy (or otherwise) to this usage. Using a modified constant comparative approach, we analyzed 107 narrative interviews (32 in UKa, 36 in UKb, 39 in Australia) collected in three research studies of experiences of depression in the UK (2003-4 UKa, and 2012 UKb) and in Australia (2010-11). We contend that with the precariousness of the legitimacy of the pharmaceutical treatment of depression, participants embark on their own legitimization work, often alone and while distressed. We posit that here, individuals with depression may be particularly susceptible to moral uncertainty about their illness and pharmaceutical interventions, including concerns about shameful antidepressant use and deviance (e.g. conceiving medication as pseudo-illicit). We conclude that while people's experiences of antidepressants (including successful treatments) involve challenges to illegitimacy narratives, it is difficult for participants to escape the influence of underlying moral concerns, and the legitimacy quandary powerfully shapes antidepressant use.

Starting antidepressant use: a qualitative synthesis of UK and Australian data.

OBJECTIVE: To explore people's experiences of starting antidepressant treatment. DESIGN: Qualitative interpretive approach combining thematic analysis with constant comparison. Relevant coding reports from the original studies (generated using NVivo) relating to initial experiences of antidepressants were explored in further detail, focusing on the ways in which participants discussed their experiences of taking or being prescribed an antidepressant for the first time. PARTICIPANTS: 108 men and women aged 22-84 who had taken antidepressants for depression. SETTING: Respondents recruited throughout the UK during 2003-2004 and 2008 and 2012-2013 and in Australia during 2010-2011. RESULTS: People expressed a wide range of feelings about initiating antidepressant use. People's attitudes towards starting antidepressant use were shaped by stereotypes and stigmas related to perceived drug dependency and potentially extreme side effects. Anxieties were expressed about starting use, and about how long the antidepressant might begin to take effect, how much it might help or hinder them, and about what to expect in the initial weeks. People worried about the possibility of experiencing adverse effects and implications for their senses of self. Where people felt they had not been given sufficient time during their consultation information or support to take the medicines, the uncertainty could be particularly unsettling and impact on their ongoing views on and use of antidepressants as a viable treatment option. CONCLUSIONS: Our paper is the first to explore in-depth patient existential concerns about start of antidepressant use using multicountry data. People need additional support when they make decisions about starting antidepressants. Health professionals can use our findings to better understand and explore with patients' their concerns before their patients start antidepressants. These insights are key to supporting patients, many of whom feel intimidated by the prospect of taking antidepressants, especially during the uncertain first few weeks of treatment.

Non-focal neurological symptoms associated with classical presentations of transient ischaemic attack: qualitative analysis of interviews with patients.

BACKGROUND: Improving the recognition of transient ischaemic attack (TIA) at initial healthcare contact is essential as urgent specialist assessment and treatment reduces stroke risk. Accurate TIA detection could be achieved with clinical prediction rules but none have been validated in primary care. An alternative approach using qualitative analysis of patients' experiences of TIA may identify novel features of the TIA phenotype that are not detected routinely, as such techniques have revealed novel early features of other important conditions such as meningococcaemia. We sought to determine whether the patient's experience of TIA would reveal additional deficits that can be tested prospectively in cohort studies to determine their additional diagnostic and prognostic utility at the first healthcare contact. METHODOLOGY AND FINDINGS: Qualitative semi-structured interviews with 25 patients who had experienced definite TIA as determined by a stroke specialist; framework analysis to map symptoms and key words or descriptive phrases used against each individual, with close attention to the detail of the language used. All interview transcripts were reviewed by a specialist clinician with experience in TIA/minor stroke. Patients described non-focal symptoms consistent with higher function deficits in spatial perception and awareness of deficit, as well as feelings of disconnection with their immediate surroundings. Of the classical features, weakness and speech disturbance were described in ways that did not meet the readily recognisable phenotype. CONCLUSION/SIGNIFICANCE: Analysis of patients' narrative accounts reveals a set of overlooked features of the experience of TIA which may provide additional diagnostic utility so that providers of first contact healthcare can recognise TIA more easily. Future research is required in a prospective cohort of patients presenting with transient neurological symptoms to determine how frequent these features are, what they add to diagnostic information and whether they can refine measures to predict stroke risk.

Beckwith-Wiedemann syndrome in adults: observations from one family and recommendations for care.

Literature review and clinical findings in four affected adult males from one family suggest that there are serious and currently ill-defined health risks in adults with Beckwith-Wiedemann syndrome (BWS). These may include male subfertility, vascular anomalies, renal abnormalities, hearing loss and, possibly, an increased risk for adult-onset malignancy. Given present knowledge, recommendations in caring for adults with this disorder remain tentative but likely should include counseling for possible infertility in males, screening echocardiography, renal sonogram and renal function testing, and counseling about possible increased risk for adult onset malignancy.

Structural variation of chromosomes in autism spectrum disorder.

Structural variation (copy number variation [CNV] including deletion and duplication, translocation, inversion) of chromosomes has been identified in some individuals with autism spectrum disorder (ASD), but the full etiologic role is unknown. We performed genome-wide assessment for structural abnormalities in 427 unrelated ASD cases via single-nucleotide polymorphism microarrays and karyotyping. With microarrays, we discovered 277 unbalanced CNVs in 44% of ASD families not present in 500 controls (and re-examined in another 1152 controls). Karyotyping detected additional balanced changes. Although most variants were inherited, we found a total of 27 cases with de novo alterations, and in three (11%) of these individuals, two or more new variants were observed. De novo CNVs were found in approximately 7% and approximately 2% of idiopathic families having one child, or two or more ASD siblings, respectively. We also detected 13 loci with recurrent/overlapping CNV in unrelated cases, and at these sites, deletions and duplications affecting the same gene(s) in different individuals and sometimes in asymptomatic carriers were also found. Notwithstanding complexities, our results further implicate the SHANK3-NLGN4-NRXN1 postsynaptic density genes and also identify novel loci at DPP6-DPP10-PCDH9 (synapse complex), ANKRD11, DPYD, PTCHD1, 15q24, among others, for a role in ASD susceptibility. Our most compelling result discovered CNV at 16p11.2 (p = 0.002) (with characteristics of a genomic disorder) at approximately 1% frequency. Some of the ASD regions were also common to mental retardation loci. Structural variants were found in sufficiently high frequency influencing ASD to suggest that cytogenetic and microarray analyses be considered in routine clinical workup.

The identification of microdeletion syndromes and other chromosome abnormalities: cytogenetic methods of the past, new technologies for the future.

Chromosome analysis is an important diagnostic tool in the identification of causes of mental retardation, developmental delay, and other developmental disabilities. Cytogenetic approaches have revealed the chromosomal basis of a large number of genetic syndromes. The recent use of microarray-based comparative genomic hybridization (array CGH) has accelerated the identification of novel cytogenetic abnormalities. We present the results of array CGH in 8,789 clinical cases submitted for a variety of developmental problems. Of these cases, 6.9% showed clinically relevant abnormalities, 1.2% showed benign copy-number variants (polymorphisms), 2.5% showed recurrent alterations of unclear clinical significance-many of which are likely to be polymorphisms-and 1.4% showed novel alterations of unclear relevance. Although cytogenetic methods, including array CGH, have great potential for identifying novel chromosomal syndromes, this high-resolution analysis may also result in diagnostic challenges imposed on laboratories and clinicians regarding findings of unclear clinical significance. (c) 2007 Wiley-Liss, Inc.