Pubmed du 22/04/15

Pubmed du jour

2015-04-22 12:03:50

1. Adi A, Tawil B, Aldosari M, Shinwari J, Nester M, Aldhalaan H, Alshamrani H, Ghannam M, Meyer B, Al Tassan N. {{Homozygosity analysis in subjects with autistic spectrum disorder}}. {Mol Med Rep};2015 (Apr 22)
Autistic spectrum disorder (ASD) is a complex neurodevelopmental disorder that results in social and communication impairments, as well as repetitive and stereotyped patterns. Genetically, ASD has been described as a multifactorial genetic disorder. The aim of the present study was to investigate possible susceptibility loci of ASD, utilizing the highly consanguineous and inbred nature of numerous families within the population of Saudi Arabia. A total of 13 multiplex families and 27 affected individuals were recruited and analyzed using Affymetrix GeneChip(R) Mapping 250K and 6.0 arrays as well as Axiom arrays. Numerous regions of homozygosity were identified, including regions in genes associated with synaptic function and neurotransmitters, as well as energy and mitochondriaassociated genes, and developmentallyassociated genes. The loci identified in the present study represent regions that may be further investigated, which could reveal novel changes and variations associated with ASD, reinforcing the complex inheritance of the disease.

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2. Bearss K, Johnson C, Smith T, Lecavalier L, Swiezy N, Aman M, McAdam DB, Butter E, Stillitano C, Minshawi N, Sukhodolsky DG, Mruzek DW, Turner K, Neal T, Hallett V, Mulick JA, Green B, Handen B, Deng Y, Dziura J, Scahill L. {{Effect of parent training vs parent education on behavioral problems in children with autism spectrum disorder: a randomized clinical trial}}. {JAMA};2015 (Apr 21);313(15):1524-1533.

IMPORTANCE: Disruptive behavior is common in children with autism spectrum disorder. Behavioral interventions are used to treat disruptive behavior but have not been evaluated in large-scale randomized trials. OBJECTIVE: To evaluate the efficacy of parent training for children with autism spectrum disorder and disruptive behavior. DESIGN, SETTING, AND PARTICIPANTS: This 24-week randomized trial compared parent training (n = 89) to parent education (n = 91) at 6 centers (Emory University, Indiana University, Ohio State University, University of Pittsburgh, University of Rochester, Yale University). We screened 267 children; 180 children (aged 3-7 years) with autism spectrum disorder and disruptive behaviors were randomly assigned (86% white, 88% male) between September 2010 and February 2014. INTERVENTIONS: Parent training (11 core, 2 optional sessions; 2 telephone boosters; 2 home visits) provided specific strategies to manage disruptive behavior. Parent education (12 core sessions, 1 home visit) provided information about autism but no behavior management strategies. MAIN OUTCOMES AND MEASURES: Parents rated disruptive behavior and noncompliance on co-primary outcomes: the Aberrant Behavior Checklist-Irritability subscale (range, 0-45) and the Home Situations Questionnaire-Autism Spectrum Disorder (range, 0-9). On both measures, higher scores indicate greater severity and a 25% reduction indicates clinical improvement. A clinician blind to treatment assignment rated the Improvement scale of the Clinical Global Impression (range, 1-7), a secondary outcome, with a positive response less than 3. RESULTS: At week 24, the Aberrant Behavior Checklist-Irritability subscale declined 47.7% in parent training (from 23.7 to 12.4) compared with 31.8% for parent education (23.9 to 16.3) (treatment effect, -3.9; 95% CI, -6.2 to -1.7; P < .001, standardized effect size = 0.62). The Home Situations Questionnaire-Autism Spectrum Disorder declined 55% (from 4.0 to 1.8) compared with 34.2% in parent education (3.8 to 2.5) (treatment effect, -0.7; 95% CI, -1.1 to -0.3; P < .001, standardized effect size = 0.45). Neither measure met the prespecified minimal clinically important difference. The proportions with a positive response on the Clinical Global Impression-Improvement scale were 68.5% for parent training vs 39.6% for parent education (P < .001). CONCLUSIONS AND RELEVANCE: For children with autism spectrum disorder, a 24-week parent training program was superior to parent education for reducing disruptive behavior on parent-reported outcomes, although the clinical significance of the improvement is unclear. The rate of positive response judged by a blinded clinician was greater for parent training vs parent education. TRIAL REGISTRATION: clinicaltrials.gov Identifier: NCT01233414.

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3. Berg AT, Dobyns WB. {{Progress in autism and related disorders of brain development}}. {Lancet Neurol};2015 (Apr 16)

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4. Bogliacino F, Parra Forero IA. {{Behaviourally designed treatments that increase willingness to treatment from families with children suffering from autism spectrum disorder}}. {J Epidemiol Community Health};2015 (Apr 22)
BACKGROUND: Autism spectrum disorder is a lifelong disability that is not well known by the general population and tends to be associated with social stigma; also, because it involves children, it may get highly emotionally charged. These stylised facts engender a number of possible heuristics and biases at the moment of deciding on following a treatment or looking for a diagnosis, which should be considered in the presentation of information. Using insights from Behavioural Economics, three treatments are designed to present the information regarding possible therapies. METHODS: Between-subjects design with one level of variation. Interviews were performed with a convenience sample of 154 households from the metropolitan area of Bogota (Colombia). The treatments include: use of default option, use of professional interviewer to illustrate the therapy and emotionally charged presentation. RESULTS: Kruskal-Wallis test of the intention to be treated rejects the null hypothesis (chi2=22.14, p=0.00). The cognitive processing of the information is not a determinant, supporting the claim that genuine framing effects shape the choice. The strongest effect of the treatment with a professional suggests a key role for asymmetry of the information, which is confirmed indirectly through the postexperiment questionnaire. CONCLUSIONS: Bad healthcare decisions are not necessarily driven by lack of information. Asymmetric information (eg, delegating the decision to a professional) improves choices, especially when social stigma is involved. Cognitive processing of information seems to be less relevant than the framing effect.

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5. Chatterji P, Decker SL, Markowitz S. {{The effects of mandated health insurance benefits for autism on out-of-pocket costs and access to treatment}}. {J Policy Anal Manage};2015 (Spring);34(2):328-353.

As of 2014, 37 states have passed mandates requiring many private health insurance policies to cover diagnostic and treatment services for autism spectrum disorders (ASDs). We explore whether ASD mandates are associated with out-of-pocket costs, financial burden, and cost or insurance-related problems with access to treatment among privately insured children with special health care needs (CSHCNs). We use difference-in-difference and difference-in-difference-in-difference approaches, comparing pre–post mandate changes in outcomes among CSHCN who have ASD versus CSHCN other than ASD. Data come from the 2005 to 2006 and the 2009 to 2010 waves of the National Survey of CSHCN. Based on the model used, our findings show no statistically significant association between state ASD mandates and caregivers’ reports about financial burden, access to care, and unmet need for services. However, we do find some evidence that ASD mandates may have beneficial effects in states in which greater percentages of privately insured individuals are subject to the mandates. We caution that we do not study the characteristics of ASD mandates in detail, and most ASD mandates have gone into effect very recently during our study period.

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6. Chiang CH, Chu CL, Lee TC. {{Efficacy of caregiver-mediated joint engagement intervention for young children with autism spectrum disorders}}. {Autism};2015 (Apr 20)
Joint attention intervention for children with autism spectrum disorders was focused on improving joint engagement and joint attention skills. The purpose of this study was to develop a caregiver-mediated joint engagement intervention program combined with body movement play to investigate the effects of joint engagement/joint attention skills in young children with autism spectrum disorders. A quasi-experimental research design was conducted. A total of 34 young children with autism spectrum disorders aged 2-4 years were separated into an intervention and a control group. The program consisted of 20 sessions, 60 min per session, twice a week, for the target child and his or her parent. The results indicated that child-initiated supportive and coordinated joint engagement was greater for the intervention group compared with the control group at 3-month follow-up. This demonstrated that our joint engagement intervention could enhance joint engagement, especially coordinated joint engagement for young children with autism spectrum disorders. The limitations of the study and future directions were discussed.

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7. Codagnone MG, Podesta MF, Uccelli NA, Reines A. {{Differential Local Connectivity and Neuroinflammation Profiles in the Medial Prefrontal Cortex and Hippocampus in the Valproic Acid Rat Model of Autism}}. {Dev Neurosci};2015 (Apr 18)
Autism spectrum disorders (ASD) are a group of developmental disabilities characterized by impaired social interaction, communication deficit and repetitive and stereotyped behaviors. Neuroinflammation and synaptic alterations in several brain areas have been suggested to contribute to the physiopathology of ASD. Although the limbic system plays an important role in the functions found impaired in ASD, reports on these areas are scarce and results controversial. In the present study we searched in the medial prefrontal cortex (mPFC) and hippocampus of rats exposed to the valproic acid (VPA) model of ASD for early structural and molecular changes, coincident in time with the behavioral alterations. After confirming delayed growth and maturation in VPA rats, we were able to detect decreased exploratory activity and social interaction at an early time point (postnatal day 35). In mPFC, although typical cortical column organization was preserved in VPA animals, we found that interneuronal space was wider than in controls. Hippocampal CA3 (cornu ammonis 3) pyramidal layer and the granular layer of the dentate gyrus both showed a disorganized spatial arrangement in VPA animals. Neuronal alterations were accompanied with increased tomato lectin and glial fibrillary acidic protein (GFAP) immunostainings both in the mPFC and hippocampus. In the latter region, the increased GFAP immunoreactivity was CA3 specific. At the synaptic level, while mPFC from VPA animals showed increased synaptophysin (SYN) immunostaining, a SYN deficit was found in all hippocampal subfields. Additionally, both the mPFC and the hippocampus of VPA rats showed increased neuronal cell adhesion molecule (NCAM) immunostaining together with decreased levels of its polysialylated form (PSA-NCAM). Interestingly, these changes were more robust in the CA3 hippocampal subfield. Our results indicate that exploratory and social deficits correlate with region-dependent neuronal disorganization and reactive gliosis in the mPFC and hippocampus of VPA rats. While microgliosis is spread in these two limbic areas, astrogliosis, although extended in the mPFC, is circumscribed to the CA3 hippocampal subfield. Our work indicates that neuroinflammation and synaptic alterations do coexist in VPA rats, making this model suitable for studying novel aspects of neuron-glia interactions. Moreover, it suggests that the mPFC and hippocampus might behave differently in the context of the local hyperconnectivity and synaptic hypotheses of autism. (c) 2015 S. Karger AG, Basel.

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8. Coeckelbergh M, Pop C, Simut R, Peca A, Pintea S, David D, Vanderborght B. {{A Survey of Expectations About the Role of Robots in Robot-Assisted Therapy for Children with ASD: Ethical Acceptability, Trust, Sociability, Appearance, and Attachment}}. {Sci Eng Ethics};2015 (Apr 17)
The use of robots in therapy for children with autism spectrum disorder (ASD) raises issues concerning the ethical and social acceptability of this technology and, more generally, about human-robot interaction. However, usually philosophical papers on the ethics of human-robot-interaction do not take into account stakeholders’ views; yet it is important to involve stakeholders in order to render the research responsive to concerns within the autism and autism therapy community. To support responsible research and innovation in this field, this paper identifies a range of ethical, social and therapeutic concerns, and presents and discusses the results of an exploratory survey that investigated these issues and explored stakeholders’ expectations about this kind of therapy. We conclude that although in general stakeholders approve of using robots in therapy for children with ASD, it is wise to avoid replacing therapists by robots and to develop and use robots that have what we call supervised autonomy. This is likely to create more trust among stakeholders and improve the quality of the therapy. Moreover, our research suggests that issues concerning the appearance of the robot need to be adequately dealt with by the researchers and therapists. For instance, our survey suggests that zoomorphic robots may be less problematic than robots that look too much like humans.

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9. De Filippis B, Valenti D, Chiodi V, Ferrante A, de Bari L, Fiorentini C, Domenici MR, Ricceri L, Vacca RA, Fabbri A, Laviola G. {{Modulation of Rho GTPases rescues brain mitochondrial dysfunction, cognitive deficits and aberrant synaptic plasticity in female mice modeling Rett syndrome}}. {Eur Neuropsychopharmacol};2015 (Mar 30)
Rho GTPases are molecules critically involved in neuronal plasticity and cognition. We have previously reported that modulation of brain Rho GTPases by the bacterial toxin CNF1 rescues the neurobehavioral phenotype in MeCP2-308 male mice, a model of Rett syndrome (RTT). RTT is a rare X-linked neurodevelopmental disorder and a genetic cause of intellectual disability, for which no effective therapy is available. Mitochondrial dysfunction has been proposed to be involved in the mechanism of the disease pathogenesis. Here we demonstrate that modulation of Rho GTPases by CNF1 rescues the reduced mitochondrial ATP production via oxidative phosphorylation in the brain of MeCP2-308 heterozygous female mice, the condition which more closely recapitulates that of RTT patients. In RTT mouse brain, CNF1 also restores the alterations in the activity of the mitochondrial respiratory chain (MRC) complexes and of ATP synthase, the molecular machinery responsible for the majority of cell energy production. Such effects were achieved through the upregulation of the protein content of those MRC complexes subunits, which were defective in RTT mouse brain. Restored mitochondrial functionality was accompanied by the rescue of deficits in cognitive function (spatial reference memory in the Barnes maze), synaptic plasticity (long-term potentiation) and Tyr1472 phosphorylation of GluN2B, which was abnormally enhanced in the hippocampus of RTT mice. Present findings bring into light previously unknown functional mitochondrial alterations in the brain of female mice modeling RTT and provide the first evidence that RTT brain mitochondrial dysfunction can be rescued by modulation of Rho GTPases.

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10. Ecker C, Bookheimer SY, Murphy DG. {{Neuroimaging in autism spectrum disorder: brain structure and function across the lifespan}}. {Lancet Neurol};2015 (Apr 16)
Over the past decade, in-vivo MRI studies have provided many invaluable insights into the neural substrates underlying autism spectrum disorder (ASD), which is now known to be associated with neurodevelopmental variations in brain anatomy, functioning, and connectivity. These systems-level features of ASD pathology seem to develop differentially across the human lifespan so that the cortical abnormalities that occur in children with ASD differ from those noted at other stages of life. Thus, investigation of the brain in ASD poses particular methodological challenges, which must be addressed to enable the comparison of results across studies. Novel analytical approaches are also being developed to facilitate the translation of findings from the research to the clinical setting. In the future, the insights provided by human neuroimaging studies could contribute to biomarker development for ASD and other neurodevelopmental disorders, and to new approaches to diagnosis and treatment.

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11. Erbetta A, Bulgheroni S, Contarino VE, Chiapparini L, Esposito S, Annunziata S, Riva D. {{Low-Functioning Autism and Nonsyndromic Intellectual Disability: Magnetic Resonance Imaging (MRI) Findings}}. {J Child Neurol};2015 (Apr 20)
Previous neuroradiologic studies reported a high incidence of abnormalities in low-functioning autistic children. In this population, it is difficult to know which abnormality depends on autism itself and which is related to intellectual disability associated with autism. The aim of this study was to evaluate the frequency of neuroradiologic abnormalities in low-functioning autistic children compared to Intellectual Quotient and age-matched nonsyndromic children, using the same set of magnetic resonance imaging (MRI) sequences. MRI was rated as abnormal in 44% of autistic and 54% of children with intellectual disability. The main results were mega cisterna magna in autism and hypoplastic corpus callosum in intellectual disability. These abnormalities are morphologically visible signs of altered brain development. These findings, more frequent than expected, are not specific to the 2 conditions. Although MRI cannot be considered mandatory, it allows an in-depth clinical assessment in nonsyndromic intellectual-disabled and autistic children.

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12. Fein E. {{Erratum to: Making Meaningful Worlds: Role-Playing Subcultures and the Autism Spectrum}}. {Cult Med Psychiatry};2015 (Apr 19)

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13. Fortunato-Tavares T, Andrade CR, Befi-Lopes D, Limongi SO, Fernandes FD, Schwartz RG. {{Syntactic comprehension and working memory in children with specific language impairment, autism or Down syndrome}}. {Clin Linguist Phon};2015 (Apr 22):1-24.

This study examined syntactic assignment for predicates and reflexives as well as working memory effects in the sentence comprehension of children with Specific Language Impairment (SLI), Down syndrome (DS), high functioning Autism (HFA) and Typical Language Development (TLD). Fifty-seven children (35 boys and 22 girls) performed a computerised picture-selection sentence comprehension task. Predicate attachment and reflexive antecedent assignment (with working memory manipulations) were investigated. The results showed that SLI, HFA and DS children exhibited poorer overall performance than TLD children. Children with SLI exhibited similar performance to the DS and HFA children only when working memory demands were higher. We conclude that children with SLI, HFA and DS differ from children with TLD in their comprehension of predicate and reflexive structures where the knowledge of syntactic assignment is required. Working memory manipulation had different effects on syntactic comprehension depending on language disorder. Intelligence was not an explanatory factor for the differences observed in performance.

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14. Geschwind DH, State MW. {{Gene hunting in autism spectrum disorder: on the path to precision medicine}}. {Lancet Neurol};2015 (Apr 16)
Autism spectrum disorder is typical of the majority of neuropsychiatric syndromes in that it is defined by signs and symptoms, rather than by aetiology. Not surprisingly, the causes of this complex human condition are manifold and include a substantial genetic component. Recent developments in gene-hunting technologies and methods, and the resulting plethora of genetic findings, promise to open new avenues to understanding of disease pathophysiology and to contribute to improved clinical management. Despite remarkable genetic heterogeneity, evidence is emerging for converging pathophysiology in autism spectrum disorder, but how this notion of convergent pathways will translate into therapeutics remains to be established. Leveraging genetic findings through advances in model systems and integrative genomic approaches could lead to the development of new classes of therapies and a personalised approach to treatment.

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15. Goitia V, Oquendo M, Stratton R. {{Case of 7p22.1 Microduplication Detected by Whole Genome Microarray (REVEAL) in Workup of Child Diagnosed with Autism}}. {Case Rep Genet};2015;2015:212436.

Introduction. More than 60 cases of 7p22 duplications and deletions have been reported with over 16 of them occurring without concomitant chromosomal abnormalities. Patient and Methods. We report a 29-month-old male diagnosed with autism. Whole genome chromosome SNP microarray (REVEAL) demonstrated a 1.3 Mb interstitial duplication of 7p22.1 ->p22.1 arr 7p22.1 (5,436,367-6,762,394), the second smallest interstitial 7p duplication reported to date. This interval included 14 OMIM annotated genes (FBXL18, ACTB, FSCN1, RNF216, OCM, EIF2AK1, AIMP2, PMS2, CYTH3, RAC1, DAGLB, KDELR2, GRID2IP, and ZNF12). Results. Our patient presented features similar to previously reported cases with 7p22 duplication, including brachycephaly, prominent ears, cryptorchidism, speech delay, poor eye contact, and outburst of aggressive behavior with autism-like features. Among the genes located in the duplicated segment, ACTB gene has been proposed as a candidate gene for the alteration of craniofacial development. Overexpression of RNF216L has been linked to autism. FSCN1 may play a role in neurodevelopmental disease. Conclusion. Characterization of a possible 7p22.1 Duplication Syndrome has yet to be made. Recognition of the clinical spectrum in patients with a smaller duplication of 7p should prove valuable for determining the minimal critical region, helping delineate a better prediction of outcome and genetic counseling.

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16. Groskreutz MP, Peters A, Groskreutz NC, Higbee TS. {{Increasing play-based commenting in children with autism spectrum disorder using a novel script-frame procedure}}. {J Appl Behav Anal};2015 (Apr 17)
Children with developmental disabilities may engage in less frequent and more repetitious language than peers with typical development. Scripts have been used to increase communication by teaching one or more specific statements and then fading the scripts. In the current study, preschoolers with developmental disabilities experienced a novel script-frame protocol and learned to make play-related comments about toys. After the script-frame protocol, commenting occurred in the absence of scripts, with untrained play activities, and included untrained comments.

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17. Hepburn SL, Blakeley-Smith A, Wolff B, Reaven JA. {{Telehealth delivery of cognitive-behavioral intervention to youth with autism spectrum disorder and anxiety: A pilot study}}. {Autism};2015 (Apr 20)
Youth with autism spectrum disorders frequently experience significant symptoms of anxiety. Empirically supported psychosocial interventions exist, yet access is limited, especially for families in rural areas. Telehealth (i.e. videoconferencing) has potential to reduce barriers to access to care; however, little is known about the feasibility or efficacy of directly intervening with youth with autism spectrum disorders through this modality. This study details the pilot testing of a telehealth version of an empirically supported intervention targeting anxiety in youth with autism spectrum disorders. The primary focus of this study is on feasibility, with evaluation of outcomes as a starting point for future randomized trials. In all, 33 families of youth with autism spectrum disorders and significant anxiety symptoms participated in this study (Telehealth Facing Your Fears (FYF) Intervention: n = 17; Wait-list control: n = 16). Youth of all functioning levels were included. Acceptability was strong; however, the usability of the technology was problematic for some families and impeded some sessions significantly. Fidelity of the telehealth version to the critical elements of the original, in vivo version was excellent. More work is needed to improve delivery of exposure practices and parent coaching. Preliminary efficacy analyses are promising, with improvements observed in youth anxiety over time (relative to a comparison group waiting for live intervention) and parent sense of competence (within group). Clearly, stronger designs are necessary to evaluate efficacy sufficiently; however, this study does provide support for further investigation of clinic-to-home videoconferencing as a direct intervention tool for youth with autism spectrum disorders and their parents.

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18. Hong ER, Ganz JB, Ninci J, Neely L, Gilliland W, Boles M. {{An Evaluation of the Quality of Research on Evidence-Based Practices for Daily Living Skills for Individuals with Autism Spectrum Disorder}}. {J Autism Dev Disord};2015 (Apr 17)
This study presents a literature review of interventions for improving daily living skills of individuals with ASD. This review investigated the quality of the design and evidence of the literature base and determined the state of the evidence base related to interventions for improving daily living skills of individuals with ASD. Included studies were evaluated to determine the overall quality of the evidence for each design within each article, based on the What Works Clearinghouse standards for single-case experimental design (Kratochwill et al. 2010), adapted by Maggin et al. (Remedial Spec Educ 34(1):44-58, 2013. doi: 10.1177/0741932511435176 ). As a result, video modeling was found to be an evidence-based practice. Limitations and implications for future research and for practitioners are discussed.

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19. Jain A, Marshall J, Buikema A, Bancroft T, Kelly JP, Newschaffer CJ. {{Autism occurrence by MMR vaccine status among US children with older siblings with and without autism}}. {JAMA};2015 (Apr 21);313(15):1534-1540.

IMPORTANCE: Despite research showing no link between the measles-mumps-rubella (MMR) vaccine and autism spectrum disorders (ASD), beliefs that the vaccine causes autism persist, leading to lower vaccination levels. Parents who already have a child with ASD may be especially wary of vaccinations. OBJECTIVE: To report ASD occurrence by MMR vaccine status in a large sample of US children who have older siblings with and without ASD. DESIGN, SETTING, AND PARTICIPANTS: A retrospective cohort study using an administrative claims database associated with a large commercial health plan. Participants included children continuously enrolled in the health plan from birth to at least 5 years of age during 2001-2012 who also had an older sibling continuously enrolled for at least 6 months between 1997 and 2012. EXPOSURES: MMR vaccine receipt (0, 1, 2 doses) between birth and 5 years of age. MAIN OUTCOMES AND MEASURES: ASD status defined as 2 claims with a diagnosis code in any position for autistic disorder or other specified pervasive developmental disorder (PDD) including Asperger syndrome, or unspecified PDD (International Classification of Diseases, Ninth Revision, Clinical Modification 299.0x, 299.8x, 299.9x). RESULTS: Of 95,727 children with older siblings, 994 (1.04%) were diagnosed with ASD and 1929 (2.01%) had an older sibling with ASD. Of those with older siblings with ASD, 134 (6.9%) had ASD, vs 860 (0.9%) children with unaffected siblings (P < .001). MMR vaccination rates (>/=1 dose) were 84% (n = 78,564) at age 2 years and 92% (n = 86,063) at age 5 years for children with unaffected older siblings, vs 73% (n = 1409) at age 2 years and 86% (n = 1660) at age 5 years for children with affected siblings. MMR vaccine receipt was not associated with an increased risk of ASD at any age. For children with older siblings with ASD, at age 2, the adjusted relative risk (RR) of ASD for 1 dose of MMR vaccine vs no vaccine was 0.76 (95% CI, 0.49-1.18; P = .22), and at age 5, the RR of ASD for 2 doses compared with no vaccine was 0.56 (95% CI, 0.31-1.01; P = .052). For children whose older siblings did not have ASD, at age 2, the adjusted RR of ASD for 1 dose was 0.91 (95% CI, 0.67-1.20; P = .50) and at age 5, the RR of ASD for 2 doses was 1.12 (95% CI, 0.78-1.59; P = .55). CONCLUSIONS AND RELEVANCE: In this large sample of privately insured children with older siblings, receipt of the MMR vaccine was not associated with increased risk of ASD, regardless of whether older siblings had ASD. These findings indicate no harmful association between MMR vaccine receipt and ASD even among children already at higher risk for ASD.

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20. King BH. {{Promising forecast for autism spectrum disorders}}. {JAMA};2015 (Apr 21);313(15):1518-1519.

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21. Kleiman GH, Barnea A, Gozes I. {{ADNP: A major autism mutated gene is differentially distributed (age and gender) in the songbird brain}}. {Peptides};2015 (Apr 17)
ADNP is a protein necessary for brain development, important for brain plasticity, cognitive and social functioning, characteristics that are all impaired in autism and in the Adnp+/- mouse model, in a sex-dependent manner. ADNP was originally discovered as a protein that is secreted from glial cells in response to vasoactive intestinal peptide (VIP). VIP is a major neuroprotective peptide in the CNS and PNS and was also associated with social recognition in rodents and aggression, pair-bonding and parental behaviors in birds. Comparative sequence alignment revealed high evolutionary conservation of ADNP in Chordata. Despite its importance in brain function, ADNP has never been studied in birds. Zebra finches (Taeniopygia guttata) are highly social songbirds that have a sexually dichotomous anatomical brain structure, with males demonstrating a developed song system, presenting a model to study behavior and potential sexually dependent fundamental differences. Here, using quantitative real time polymerase chain reaction (qRT-PCR), we discovered sexually dichotomous and age related differences in ADNP mRNA expression in three different regions of the song bird brain-cerebellum, cerebrum, and brain stem. Higher levels of ADNP mRNA were specifically found in young male compared to the female cerebrum, while aging caused a significant 2 and 3-fold decrease in the female and male cerebrum, respectively. Furthermore, a comparison between the three tested brain regions revealed unique sex-dependent ADNP mRNA distribution patterns, affected by aging. Future studies are aimed at deciphering the function of ADNP in birds, toward a better molecular understanding of sexual dichotomy in singing behavior in birds.

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22. Kocher CP, Howard MR, Fienup DM. {{The Effects of Work-Reinforcer Schedules on Skill Acquisition for Children With Autism}}. {Behav Modif};2015 (Apr 20)
This study evaluated the effects of continuous and discontinuous work-reinforcer schedule arrangements on skill acquisition for three students with autism. Participants were initially exposed to both schedules in an alternating schedules condition where they were taught different but equivalent skills for each schedule. In the discontinuous schedule condition, participants completed work in small increments to gain access to a reinforcer for short periods of time. In the continuous schedule condition, participants completed larger increments of work to gain longer access to a reinforcer. Results showed that two participants mastered the target responses with both schedules and the third participant only met mastery criterion with the continuous schedule. Preference for schedules varied across participants. Session duration was consistently shorter during the continuous work-reinforcer schedule, suggesting that continuous work-reinforcer schedules are more efficient. Participants engaged with the reinforcer less when provided longer access, suggesting that reinforcer access might be reduced with continuous schedules for further efficiency gains.

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23. Kreibich SR, Chen M, Reichle J. {{Teaching a Child with Autism to Request Breaks While Concurrently Increasing Task Engagement}}. {Lang Speech Hear Serv Sch};2015 (Apr 22)
Purpose: An intervention package including teaching break requests and tolerance for delay in reinforcement delivery (TFD) to increase task engagement was implemented with a 4-year-old child with an ASD who did not engage for a duration commensurate with IEP team expectations. Method: A multiple-probe design across tasks was implemented. Dependent measures taken included engagement duration and the production of spoken break requests after work completion. Intervention was implemented with tasks involving short periods of engagement prior to the learner’s disengagement. The possibility of the learner’s overgeneralized production of break requests with tasks originally associated with longer engagement was also examined. Results: The participant learned to request breaks in short engagement tasks. Additionally, engagement increased dramatically without off-task behavior. Overgeneralized use of break requests with long engagement tasks did not occur. Generalization of break requests to untrained short engagement tasks that were not the focus of intervention (but were associated with escape and short engagement) did not occur until the intervention package was implemented. Conclusions: The combination of teaching break requests and TFD was effective in addressing problem behavior. Implications for enhancing properly generalized and moderated use of break requests across different tasks or contexts are discussed.

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24. Liu YF, Sowell SM, Luo Y, Chaubey A, Cameron RS, Kim HG, Srivastava AK. {{Autism and Intellectual Disability-Associated KIRREL3 Interacts with Neuronal Proteins MAP1B and MYO16 with Potential Roles in Neurodevelopment}}. {PLoS One};2015;10(4):e0123106.

Cell-adhesion molecules of the immunoglobulin superfamily play critical roles in brain development, as well as in maintaining synaptic plasticity, the dysfunction of which is known to cause cognitive impairment. Recently dysfunction of KIRREL3, a synaptic molecule of the immunoglobulin superfamily, has been implicated in several neurodevelopmental conditions including intellectual disability, autism spectrum disorder, and in the neurocognitive delay associated with Jacobsen syndrome. However, the molecular mechanisms of its physiological actions remain largely unknown. Using a yeast two-hybrid screen, we found that the KIRREL3 extracellular domain interacts with brain expressed proteins MAP1B and MYO16 and its intracellular domain can potentially interact with ATP1B1, UFC1, and SHMT2. The interactions were confirmed by co-immunoprecipitation and colocalization analyses of proteins expressed in human embryonic kidney cells, mouse neuronal cells, and rat primary neuronal cells. Furthermore, we show KIRREL3 colocalization with the marker for the Golgi apparatus and synaptic vesicles. Previously, we have shown that KIRREL3 interacts with the X-linked intellectual disability associated synaptic scaffolding protein CASK through its cytoplasmic domain. In addition, we found a genomic deletion encompassing MAP1B in one patient with intellectual disability, microcephaly and seizures and deletions encompassing MYO16 in two unrelated patients with intellectual disability, autism and microcephaly. MAP1B has been previously implicated in synaptogenesis and is involved in the development of the actin-based membrane skeleton. MYO16 is expressed in hippocampal neurons and also indirectly affects actin cytoskeleton through its interaction with WAVE1 complex. We speculate KIRREL3 interacting proteins are potential candidates for intellectual disability and autism spectrum disorder. Moreover, our findings provide further insight into understanding the molecular mechanisms underlying the physiological action of KIRREL3 and its role in neurodevelopment.

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25. Lombardo MV, Pierce K, Eyler LT, Carter Barnes C, Ahrens-Barbeau C, Solso S, Campbell K, Courchesne E. {{Different functional neural substrates for good and poor language outcome in autism}}. {Neuron};2015 (Apr 22);86(2):567-577.

Autism (ASD) is vastly heterogeneous, particularly in early language development. While ASD language trajectories in the first years of life are highly unstable, by early childhood these trajectories stabilize and are predictive of longer-term outcome. Early neural substrates that predict/precede such outcomes are largely unknown, but could have considerable translational and clinical impact. Pre-diagnosis fMRI response to speech in ASD toddlers with relatively good language outcome was highly similar to non-ASD comparison groups and robustly recruited language-sensitive superior temporal cortices. In contrast, language-sensitive superior temporal cortices were hypoactive in ASD toddlers with poor language outcome. Brain-behavioral relationships were atypically reversed in ASD, and a multimodal combination of pre-diagnostic clinical behavioral measures and speech-related fMRI response showed the most promise as an ASD prognosis classifier. Thus, before ASD diagnoses and outcome become clinically clear, distinct functional neuroimaging phenotypes are already present that can shed insight on an ASD toddler’s later outcome. VIDEO ABSTRACT.

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26. Machado CO, Griesi-Oliveira K, Rosenberg C, Kok F, Martins S, Rita Passos-Bueno M, Sertie AL. {{Collybistin binds and inhibits mTORC1 signaling: a potential novel mechanism contributing to intellectual disability and autism}}. {Eur J Hum Genet};2015 (Apr 22)
Protein synthesis regulation via mammalian target of rapamycin complex 1 (mTORC1) signaling pathway has key roles in neural development and function, and its dysregulation is involved in neurodevelopmental disorders associated with autism and intellectual disability. mTOR regulates assembly of the translation initiation machinery by interacting with the eukaryotic initiation factor eIF3 complex and by controlling phosphorylation of key translational regulators. Collybistin (CB), a neuron-specific Rho-GEF responsible for X-linked intellectual disability with epilepsy, also interacts with eIF3, and its binding partner gephyrin associates with mTOR. Therefore, we hypothesized that CB also binds mTOR and affects mTORC1 signaling activity in neuronal cells. Here, by using induced pluripotent stem cell-derived neural progenitor cells from a male patient with a deletion of entire CB gene and from control individuals, as well as a heterologous expression system, we describe that CB physically interacts with mTOR and inhibits mTORC1 signaling pathway and protein synthesis. These findings suggest that disinhibited mTORC1 signaling may also contribute to the pathological process in patients with loss-of-function variants in CB.European Journal of Human Genetics advance online publication, 22 April 2015; doi:10.1038/ejhg.2015.69.

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27. Neul JL, Glaze DG, Percy AK, Feyma T, Beisang A, Dinh T, Suter B, Anagnostou E, Snape M, Horrigan J, Jones NE. {{Improving Treatment Trial Outcomes for Rett Syndrome: The Development of Rett-specific Anchors for the Clinical Global Impression Scale}}. {J Child Neurol};2015 (Apr 20)
Rett syndrome is a genetically based neurodevelopmental disorder. Although the clinical consequences of Rett syndrome are profound and lifelong, currently no approved drug treatments are available specifically targeted to Rett symptoms. High quality outcome measures, specific to the core symptoms of a disorder are a critical component of well-designed clinical trials for individuals with neurodevelopmental disorders. The Clinical Global Impression Scale is a measure of global clinical change with strong face validity that has been widely used as an outcome measure in clinical trials of central nervous system disorders. Despite its favorable assay sensitivity in clinical trials, as a global measure, the Clinical Global Impression Scale is not specific to the signs and symptoms of the disorder under study. Development of key anchors for the scale, specific to the disorder being assessed, holds promise for enhancing the validity and reliability of the measure for disorders such as Rett syndrome.

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28. Nguyen CT, Fairclough DL, Noll RB. {{Problem-solving skills training for mothers of children recently diagnosed with autism spectrum disorder: A pilot feasibility study}}. {Autism};2015 (Apr 20)
Problem-solving skills training is an intervention designed to teach coping skills that has shown to decrease negative affectivity (depressive symptoms, negative mood, and post-traumatic stress symptoms) in mothers of children with cancer. The objective of this study was to see whether mothers of children recently diagnosed with autism spectrum disorder would be receptive to receiving problem-solving skills training (feasibility trial). Participants were recruited from a local outpatient developmental clinic that is part of a university department of pediatrics. Participants were to receive eight 1-h sessions of problem-solving skills training and were asked to complete assessments prior to beginning problem-solving skills training (T1), immediately after intervention (T2), and 3 months after T2 (T3). Outcome measures assessed problem-solving skills and negative affectivity (i.e. distress). In total, 30 mothers were approached and 24 agreed to participate (80.0%). Of them, 17 mothers completed problem-solving skills training (retention rate: 70.8%). Mothers of children with autism spectrum disorder who completed problem-solving skills training had significant decreases in negative affectivity and increases in problem-solving skills. A comparison to mothers of children with cancer shows that mothers of children with autism spectrum disorder displayed similar levels of depressive symptoms but less negative mood and fewer symptoms of post-traumatic stress. Data suggest that problem-solving skills training may be an effective way to alleviate distress in mothers of children recently diagnosed with autism spectrum disorder. Data also suggest that mothers of children with autism spectrum disorder were moderately receptive to receiving problem-solving skills training. Implications are that problem-solving skills training may be beneficial to parents of children with autism spectrum disorder; modifications to improve retention rates are suggested.

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29. Niederberger C. {{Re: no increase in autism-associated genetic events in children conceived by assisted reproduction}}. {J Urol};2015 (Apr);193(4):1332.

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30. Ohsima M, Waseda R, Tanaka N, Ueda H, Ooi A, Matsumoto I. {{A new fluorescent anatomic pulmonary segmentectomy using PDD endoscope system and vitamin B2: evaluation in a clinical setting using living animal}}. {Surg Endosc};2015 (Apr 17)
OBJECTIVE: Identification of intersegmental planes is essential for successful anatomic pulmonary segmentectomy. We have previously reported a new fluorescence technique using a PDD endoscope system and vitamin B2 for identification of intersegmental planes in ex vivo experiments. In the present study, we investigated and evolved this technique to perform ideal anatomic segmentectomy in a clinical setting using living pig models. METHODS: Cranial segmentectomy in the cranial lobe of the right lung was performed in six pigs using our fluorescence technique. The fluorescent cranial segmentectomy was as follows. After identification of the cranial segmental bronchus, vitamin B2 solution as a fluorescent substance was injected via bronchoscopy. The fluorescent segment was observed using a PDD endoscope system, and the identified intersegmental plane was cut using electric cautery. The operative data collected were the rates of accurate identification of the pulmonary segment and perioperative complications. The duration and light intensity of fluorescence of the target segment were recorded to provide an objective measurement of success. RESULTS: In all procedures, it was possible to identify the target segment by its clear yellow-green fluorescence. The rate of accurate identification of the pulmonary segment was 100 %. The fluorescence continued for more than 1 h with adequate light intensity. No perioperative complications were encountered. No unexpected injuries of the major segmental bronchi or vessels occurred. Hemorrhage and air leakage from the transected intersegmental plane were negligible. CONCLUSIONS: Our new fluorescence technique in a clinical setting involving a PDD endoscope system vitamin B2 enabled accurate and safe anatomic pulmonary segmentectomy, with enough strong and long fluorescence in living pig lungs.

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31. Olsson MB, Westerlund J, Lundstrom S, Giacobini M, Fernell E, Gillberg C. {{« Recovery » from the diagnosis of autism – and then?}}. {Neuropsychiatr Dis Treat};2015;11:999-1005.

BACKGROUND: The aim of this study was to follow up the 17 children, from a total group of 208 children with autism spectrum disorder (ASD), who « recovered from autism ». They had been clinically diagnosed with ASD at or under the age of 4 years. For 2 years thereafter they received intervention based on applied behavior analysis. These 17 children were all of average or borderline intellectual functioning. On the 2-year follow-up assessment, they no longer met criteria for ASD. METHODS: At about 10 years of age they were targeted for a new follow-up. Parents were given a semistructured interview regarding the child’s daily functioning, school situation, and need of support, and were interviewed using the Vineland Adaptive Behavior Scales (VABS) and the Autism – Tics, Attention-deficit/hyperactivity disorder (AD/HD), and other Comorbidities (A-TAC) telephone interview. RESULTS: The vast majority of the children had moderate-to-severe problems with attention/activity regulation, speech and language, behavior, and/or social interaction. A majority of the children had declined in their VABS scores. Most of the 14 children whose parents were A-TAC-interviewed had problems within many behavioral A-TAC domains, and four (29%) had symptom levels corresponding to a clinical diagnosis of ASD, AD/HD, or both. Another seven children (50%) had pronounced subthreshold indicators of ASD, AD/HD, or both. CONCLUSION: Children diagnosed at 2-4 years of age as suffering from ASD and who, after appropriate intervention for 2 years, no longer met diagnostic criteria for the disorder, clearly needed to be followed up longer. About 3-4 years later, they still had major problems diagnosable under the umbrella term of ESSENCE (Early Symptomatic Syndromes Eliciting Neurodevelopmental Clinical Examinations). They continued to be in need of support, educationally, from a neurodevelopmental and a medical point of view. According to parent interview data, a substantial minority of these children again met diagnostic criteria for ASD.

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32. Paul AR, McKechanie AG, Johnstone EC, Owens DG, Stanfield AC. {{Brief Report: The Association of Autistic Traits and Behavioural Patterns in Adolescents Receiving Special Educational Assistance}}. {J Autism Dev Disord};2015 (Apr 17)
INTRODUCTION: The study aim was to describe behaviours associated with autistic traits. METHODS: The Childhood Behaviour Checklist (CBCL) and Social Communication Questionnaire (SCQ) were used as measures of behaviour and autistic traits respectively in 331 adolescents receiving educational support. CBCL scores were compared between three groups defined by SCQ score: autism, pervasive developmental disorder (PDD) and non-PDD. RESULTS: The PDD and autism groups had significantly higher scores on the CBCL than the non-PDD group across all CBCL scales except Delinquent Behaviour. On seven of the eight scales, there was no difference between the autism and PDD groups. CONCLUSION: Those with PDD or autism display significantly higher levels of withdrawal, somatic complaints, anxiety/depression, social, thought and attention problems, and aggressive behaviour.

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33. Riedel A, Schrock C, Ebert D, Fangmeier T, Bubl E, Tebartz van Elst L. {{[Well Educated Unemployed – On Education, Employment and Comorbidities in Adults with High-Functioning Autism Spectrum Disorders in Germany]}}. {Psychiatr Prax};2015 (Apr 17)
Background: Based on clinical experience there is a discrepancy between the educational records and vocational performance in patients with high functioning autism spectrum disorder (ASD). Method: In order to assess psychosocial and vocational specificities of adult ASD patients we analyzed the demographic and hospital data of consecutively diagnosed patients employing descriptive statistics. Results: We were able to include 255 patients into our sample who were consecutively diagnosed between October 2009 and October 2011. The gender ratio was 162:93 in favor of male patients. The educational records of our patient sample was comparatively good [50 % highest level of German schooling system (allgemeine Hochschulreife), 39 % university degree], however, the vocational records were poor with 58 % of our patients being unemployed. The psychiatric comorbidity was high, 57 % of the patients suffered from depression. Conclusion: There is a high need for special support programs for adult high functioning ASD patients focusing on adaptive vocational skills to avoid unemployment and secondary psychiatric problems.

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34. Say GN, Babadagi Z, Karabekiroglu K. {{Breastfeeding History in Children with Autism and Attention Deficit Hyperactivity Disorder}}. {Breastfeed Med};2015 (Apr 21)

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35. Schaefer TL, Davenport MH, Erickson CA. {{Emerging pharmacologic treatment options for fragile X syndrome}}. {Appl Clin Genet};2015;8:75-93.

Fragile X syndrome (FXS) is the most common single gene cause of intellectual disability and autism spectrum disorder. Caused by a silenced fragile X mental retardation 1 gene and the subsequent deficiency in fragile X mental retardation protein, patients with FXS experience a range of physical, behavioral, and intellectual debilitations. The FXS field, as a whole, has recently met with some challenges, as several targeted clinical trials with high expectations of success have failed to elucidate significant improvements in a variety of symptom domains. As new clinical trials in FXS are planned, there has been much discussion about the use of the commonly used clinical outcome measures, as well as study design considerations, patient stratification, and optimal age range for treatment. The evidence that modification of these drug targets and use of these failed compounds would prove to be efficacious in human clinical study were rooted in years of basic and translational research. There are questions arising as to the use of the mouse models for studying FXS treatment development. This issue is twofold: many of the symptom domains and molecular and biochemical changes assessed and indicative of efficacy in mouse model study are not easily amenable to clinical trials in people with FXS because of the intolerability of the testing paradigm or a lack of noninvasive techniques (prepulse inhibition, sensory hypersensitivity, startle reactivity, or electrophysiologic, biochemical, or structural changes in the brain); and capturing subtle yet meaningful changes in symptom domains such as sociability, anxiety, and hyperactivity in human FXS clinical trials is challenging with the currently used measures (typically parent/caregiver rating scales). Clinicians, researchers, and the pharmaceutical industry have all had to take a step back and critically evaluate the way we think about how to best optimize future investigations into pharmacologic FXS treatments. As new clinical trials are coming down the drug discovery pipeline, it is clear that the field is moving in a direction that values the development of molecular biomarkers, less subjective quantitative measures of symptom improvement, and rating scales developed specifically for use in FXS in conjunction with drug safety. While summarizing preclinical evidence, where applicable, and discussing challenges in FXS treatment development, this review details both completed clinical trials for the targeted and symptomatic treatment of FXS and introduces novel projects on the cusp of clinical trial investigation.

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36. Swineford LB, Guthrie W, Thurm A. {{Convergent and Divergent Validity of the Mullen Scales of Early Learning in Young Children With and Without Autism Spectrum Disorder}}. {Psychol Assess};2015 (Apr 20)
The purpose of this study was to report on the construct, convergent, and divergent validity of the Mullen Scales of Early Learning (MSEL), a widely used test of development for young children. The sample consisted of 399 children with a mean age of 3.38 years (SD = 1.14) divided into a group of children with autism spectrum disorder (ASD) and a group of children not on the autism spectrum, with and without developmental delays. The study used the MSEL and several other measures assessing constructs relevant to the age range-including developmental skills, autism symptoms, and psychopathology symptoms-across multiple methods of assessment. Multiple-group confirmatory factor analyses revealed good overall fit and equal form of the MSEL 1-factor model across the ASD and nonspectrum groups, supporting the construct validity of the MSEL. However, neither full nor partial invariance of factor loadings was established because of the lower loadings in the ASD group compared with the nonspectrum group. Exploratory structural equation modeling revealed that other measures of developmental skills loaded together with the MSEL domain scores on a Developmental Functioning factor, supporting convergent validity of the MSEL. Divergent validity was supported by the lack of loading of MSEL domain scores on Autism Symptoms or Emotion/Behavior Problems factors. Although factor structure and loadings varied across groups, convergent and divergent validity findings were similar in the ASD and nonspectrum samples. Together, these results demonstrate evidence for the construct, convergent, and divergent validity of the MSEL using powerful data-analytic techniques. (PsycINFO Database Record

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37. Townend GS, van Kranen HJ, van der Stel R, van den Berg M, Smeets E, van Waardenburg D, Curfs LM. {{Rett Syndrome as a Rare Disease: A European Perspective}}. {Public Health Genomics};2015 (Apr 14)

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38. van Steensel FJ, Bogels SM. {{CBT for Anxiety Disorders in Children With and Without Autism Spectrum Disorders}}. {J Consult Clin Psychol};2015 (Apr 20)
OBJECTIVE: The effectiveness of cognitive-behavioral therapy (CBT) for anxiety disorders in children with autism spectrum disorders (ASD) was examined, and compared with children without ASD. METHOD: Children with ASD and comorbid anxiety disorders (n = 79, 58 boys; Mage = 11.76) and children with anxiety disorders (n = 95, 46 boys; Mage = 12.85), and their parents, participated. All families were referred to 1 of 7 mental health care centers and received the same CBT. Anxiety, quality of life, ASD-like behaviors, and emotional-behavioral problems were measured at waitlist (ASD-group only, n = 17), pretest, posttest, and 3 months, 1 year, and 2 years after CBT. RESULTS: CBT was more effective than waitlist for treating anxiety disorders (d = -1.45) and anxiety symptoms (d = -0.48) in children with ASD. At 2 years follow-up, 61% of the children with and 64% without ASD were free of their primary anxiety disorder (percentages not significantly different). The decrease in severity of anxiety disorders after CBT (d values ranging between -1.05 and -1.46) was not different for children with and without ASD. Improvements were less in children with ASD for (only) 2 out of 7 continuous outcomes measures: anxiety symptoms (d values ranging between -0.68 and -0.94 vs. d values ranging between -0.98 and -1.25) and quality of life (d values ranging between 0.39 and 0.56 vs. d values ranging between 0.77 and 0.98). CONCLUSIONS: CBT for anxiety disorders is effective for children with ASD, also in the long-term. Treatment gains may be somewhat less compared with children without ASD. (PsycINFO Database Record

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