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Orr SL, Turner A, Kabbouche MA, Horn PS, O’Brien HL, Kacperski J, LeCates S, White S, Weberding J, Miller MN, Powers SW, Hershey AD. The Profile and Prognosis of Youth With Status Migrainosus: Results From an Observational Study. Headache 2020; 60:878-888. [DOI: 10.1111/head.13767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 01/20/2020] [Accepted: 01/21/2020] [Indexed: 12/01/2022]
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Rutter MM, Wong BL, Collins JJ, Sawnani H, Taylor MD, Horn PS, Backeljauw PF. Recombinant human insulin-like growth factor-1 therapy for 6 months improves growth but not motor function in boys with Duchenne muscular dystrophy. Muscle Nerve 2020; 61:623-631. [PMID: 32108355 DOI: 10.1002/mus.26846] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 01/15/2020] [Accepted: 02/24/2020] [Indexed: 11/08/2022]
Abstract
INTRODUCTION Recombinant human insulin-like growth factor-1 (rhIGF-1) is a growth factor and has anabolic effects on muscle. We investigated whether rhIGF-1 therapy: 1) improves or preserves muscle function; and 2) improves growth in boys with Duchenne muscular dystrophy (DMD). METHODS In this study we compared prepubescent, ambulatory, glucocorticoid-treated boys with DMD (n = 17) vs controls (glucocorticoid therapy only, n = 21) in a 6-month-long, prospective, randomized, controlled trial of subcutaneous rhIGF-1 therapy. The primary outcome was 6-minute walk distance (6MWD). Secondary outcomes included height velocity (HV), change in height standard deviation score (ΔHtSDS), motor function, cardiopulmonary function, body composition, insulin sensitivity, quality of life, and safety. RESULTS Change in 6MWD was similar between groups (rhIGF-1 vs controls [mean ± SD]: 3.4 ± 32.4 vs -5.1 ± 50.2 meters, P = .53). Treated subjects grew more than controls (HV: 6.5 ± 1.7 vs 3.3 ± 1.3 cm/year, P < .0001; 6-month ΔHtSDS: 0.25, P < .0001). Lean mass and insulin sensitivity increased in treated subjects. DISCUSSION In boys with DMD, 6 months of rhIGF-1 therapy did not change motor function, but it improved linear growth.
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Porter ZR, Johnson MD, Horn PS, Ngwenya LB. Traumatic spinal subdural hematoma: An illustrative case and series review. INTERDISCIPLINARY NEUROSURGERY 2020. [DOI: 10.1016/j.inat.2019.100570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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Reisinger DL, Shaffer RC, Horn PS, Hong MP, Pedapati EV, Dominick KC, Erickson CA. Atypical Social Attention and Emotional Face Processing in Autism Spectrum Disorder: Insights From Face Scanning and Pupillometry. Front Integr Neurosci 2020; 13:76. [PMID: 32116580 PMCID: PMC7026501 DOI: 10.3389/fnint.2019.00076] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Accepted: 12/18/2019] [Indexed: 11/13/2022] Open
Abstract
Social attention deficits are a hallmark characteristic within autism spectrum disorder (ASD) and have been hypothesized to have cascading effects on emotion recognition. Eye-tracking methodology has emerged as a potentially reliable, feasible, and sensitive biomarker for examining core phenotypic features of ASD; however, these findings are mixed with regards to measuring treatment change in clinical trials. The present study aimed to assess the utility of an eye-tracking paradigm to discriminate between clinical groups in social attention and emotion recognition through face scanning and pupillometry. The present study also assessed the reliability of this paradigm within the ASD sample to further our understanding of the utility of eye-tracking for future clinical trials. Participants included 42 individuals with ASD, 29 developmental disability (DD) controls, and 62 typically developing (TD) controls between 3 and 25 years of age. An emotional faces eye-tracking paradigm was administered to all participants, with the ASD group completing the paradigm a second time approximately 2 months later. Participants' average proportion of looking and number of fixations to specific areas of interest (AOI) were examined along with changes in pupil reactivity while viewing different emotional faces. Results suggest atypical face-scanning through a reduced proportion of looking and the number of fixations toward the eyes in the ASD group regardless of the emotion that was presented. Further, pupillometry measures were able to detect increases in pupil dilation to happy faces in the ASD group. Lastly, test-retest reliability coefficients varied between the poor and excellent range based on the mechanism assessed, with the proportion of looking demonstrating the highest reliability coefficients. These findings build on the promise of eye-tracking as a feasible and reliable biomarker for identifying social attention and emotion recognition deficits in ASD. Detecting differences in emotion recognition explicitly through facial scanning was not as clear. Specific mechanisms within the eye-tracking paradigm may be viable options for assessing treatment-specific outcomes.
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Schoenberger A, Capal JK, Ondracek A, Horn PS, Murray D, Byars AW, Pearson DA, Williams ME, Bebin M, Northrup H, Wu JY, Sahin M, Krueger DA. Language predictors of autism spectrum disorder in young children with tuberous sclerosis complex. Epilepsy Behav 2020; 103:106844. [PMID: 31864941 PMCID: PMC6947531 DOI: 10.1016/j.yebeh.2019.106844] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 12/04/2019] [Accepted: 12/04/2019] [Indexed: 11/26/2022]
Abstract
BACKGROUND Epilepsy has previously been implicated in the development of autism spectrum disorder (ASD) in the setting of tuberous sclerosis complex (TSC). However, the role of language in this relationship is unclear, and the specific relationship between ASD, epilepsy, and language development in this population has not been well-studied. OBJECTIVES The objectives the study were to identify the role of early language in subsequent development of ASD, evaluate the impact of epilepsy as a covariate on language development, and evaluate the relationship between epilepsy, language development, and development of ASD. METHODS This study included 154 children ages 3-36 months with TSC who were enrolled in the TSC Autism Center of Excellence Research Network (TACERN), a multicenter, prospective observational study to identify biomarkers of ASD. Developmental and autism-specific assessments were administered longitudinally. Appropriate variables from the Mullen Scales of Early Learning (MSEL), Vineland Adaptive Behavior Scales, 2nd Edition (VABS-II), and Preschool Language Scales, 5th Edition (PLS-5) were used to assess patients' language skills. At 36 months, clinical best estimate, which was based on clinical assessment and observation, was used to determine a diagnosis of ASD. RESULTS By 12 months, all language variables on the MSEL, PLS-5, and VABS-II significantly predicted an ASD diagnosis at 36 months. Age at seizure onset was associated with language scores in that later seizure onset was associated with improved language scores on the MSEL, VABS-II, and PLS-5. Seizure onset prior to 6 months was associated with a diagnosis of ASD at 36 months. Higher seizure frequency negatively correlated with language scores at 12 months and beyond. Higher seizure frequency was also associated with an ASD diagnosis at 36 months. When looking at the relationship between epilepsy, language, and ASD diagnosis, by 18 months, language scores were more associated with a later ASD diagnosis at 36 months compared with age at seizure onset, which was a better predictor of later ASD diagnosis earlier in development. CONCLUSION Analysis of language variables and epilepsy characteristics from 6 to 36 months and ASD diagnosis at 36 months revealed significant relationships between all three variables. While the direction of these relationships needs further research, epilepsy, language, and the development of ASD are integrally related in young children with TSC.
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Darmahkasih AJ, Rybalsky I, Tian C, Shellenbarger KC, Horn PS, Lambert JT, Wong BL. Neurodevelopmental, behavioral, and emotional symptoms common in Duchenne muscular dystrophy. Muscle Nerve 2020; 61:466-474. [PMID: 31909820 DOI: 10.1002/mus.26803] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 12/26/2019] [Accepted: 12/31/2019] [Indexed: 11/11/2022]
Abstract
INTRODUCTION We studied neurodevelopmental and behavioral/emotional symptoms in patients with Duchenne muscular dystrophy (DMD). METHODS Retrospective case series of neurodevelopmental and behavioral/emotional symptoms obtained through review of systems of 700 DMD patients in relation to dystrophin gene mutations. RESULTS The most common symptoms encountered were emotional/behavioral dysregulation (38.7%), inattention/hyperactive features (31.4%), obsessive and compulsive features (25.0%), and language/speech delays (24.4%). Most patients (72.7%) had at least one symptom. Patients with mutations near the 3' end of the dystrophin gene were at higher risk for developing inattention/hyperactive features, language/speech delays, and global intellectual delays. Those with mutations between exon 31 and 79 had higher risk of clustering of symptoms when compared with those upstream of exon 30. DISCUSSION Neurodevelopmental, emotional, and behavioral symptoms are common comorbidities in DMD. There is higher prevalence of inattention/hyperactive features, language/speech delays, and global intellectual delays in genotypes affecting the 3' end of the dystrophin gene.
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Pedapati EV, Mooney LN, Wu SW, Erickson CA, Sweeney JA, Shaffer RC, Horn PS, Wink LK, Gilbert DL. Motor cortex facilitation: a marker of attention deficit hyperactivity disorder co-occurrence in autism spectrum disorder. Transl Psychiatry 2019; 9:298. [PMID: 31723120 PMCID: PMC6853984 DOI: 10.1038/s41398-019-0614-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 09/23/2019] [Accepted: 10/15/2019] [Indexed: 01/06/2023] Open
Abstract
The neural correlates distinguishing youth with Autism Spectrum Disorder (ASD-) and ASD with co-occurring Attention Deficit Hyperactivity Disorder (ASD+) are poorly understood despite significant phenotypic and prognostic differences. Paired-pulse transcranial magnetic stimulation (TMS) measures, including intracortical facilitation (ICF), short interval cortical inhibition (SICI), and cortical silent period (CSP) were measured in an age matched cohort of youth with ASD- (n = 20), ASD + (n = 29), and controls (TDC) (n = 24). ASD- and ASD+ groups did not differ by IQ or social functioning; however, ASD+ had significantly higher inattention and hyperactivity ratings. ICF (higher ratio indicates greater facilitation) in ASD+ (Mean 1.0, SD 0.19) was less than ASD- (Mean 1.3, SD 0.36) or TDC (Mean 1.2, SD 0.24) (F2,68 = 6.5, p = 0.003; post-hoc tests, ASD+ vs either TDC or ASD-, p ≤ 0.05). No differences were found between groups for SICI or age corrected active/resting motor threshold (AMT/RMT). Across all ASD youth (ASD- and ASD+), ICF was inversely correlated with worse inattention (Conners-3 Inattention (r = -0.41; p < 0.01) and ADHDRS-IV Inattention percentile (r = -0.422, p < 0.01) scores. ICF remains intact in ASD- but is impaired in ASD+. Lack of ICF is associated with inattention and executive function across ASD. Taken with the present findings, ADHD may have a distinct electrophysiological "signature" in ASD youth. ICF may constitute an emerging biomarker to study the physiology of ADHD in ASD, which may align with disease prognosis or treatment response.
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Blackard JT, Kong L, Rouster SD, Karns R, Horn PS, Kottilil S, Shata MT, Sherman KE. CCR5 receptor antagonism inhibits hepatitis C virus (HCV) replication in vitro. PLoS One 2019; 14:e0224523. [PMID: 31661521 PMCID: PMC6818973 DOI: 10.1371/journal.pone.0224523] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Accepted: 10/15/2019] [Indexed: 12/17/2022] Open
Abstract
Background and aim The hepatitis C virus (HCV) is a single-strand RNA virus that infects millions of people worldwide. Recent advances in therapy have led to viral cure using two- and three- drug combinations of direct acting inhibitors of viral replication. CCR5 is a chemokine receptor that is expressed on hepatocytes and represents a key co-receptor for HIV. We evaluated the effect of CCR5 blockade or knockdown on HCV replication in Huh7.5JFH1 cells. Methods Cells were exposed to varying concentrations of maraviroc (CCR5 inhibitor), cenicriviroc (CCR2/CCR5 inhibitor), sofosbuvir (nucleotide polymerase inhibitor), or raltegravir (HIV integrase inhibitor). Results HCV RNA was detected utilizing two qualitative strand-specific RT-PCR assays. HCV core antigen and NS3 protein was quantified in the supernatant and cell lysate, respectively. siRNA was utilized to knockdown CCR5 gene expression in hepatocytes. Alternatively, anti-CCR5 antibodies were employed to block the receptor. Supernatant levels of HCV RNA (expressed as fold change) were not reduced in the presence of raltegravir but were reduced 8.55-fold and 12.42-fold with cenicriviroc and maraviroc, respectively. Sofosbuvir resulted in a 16.20-fold change in HCV RNA levels. HCV core and NS3 protein production was also reduced in a dose-dependent manner. Two distinct anti-CCR5 antibodies also resulted in a significant reduction in HCV protein expression, as did siRNA knockdown of CCR5 gene expression. Conclusions These data provide evidence that CCR5 modulation could have a significant effect on HCV replication in an in vitro system. Further evaluation of the role of CCR5 inhibition in clinical settings may be warranted.
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Lambert JT, Darmahkasih AJ, Horn PS, Rybalsky I, Shellenbarger KC, Tian C, Wong BL. Neurodevelopmental, behavioral, and emotional symptoms in Becker muscular dystrophy. Muscle Nerve 2019; 61:156-162. [PMID: 31650559 DOI: 10.1002/mus.26750] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 10/11/2019] [Accepted: 10/19/2019] [Indexed: 11/10/2022]
Abstract
INTRODUCTION Becker muscular dystrophy (BMD) results in decreased dystrophin with implications for mental health. METHODS This is a retrospective case series of neurodevelopmental, behavioral, and emotional symptoms and respective pharmacotherapies of 70 patients with BMD. RESULTS Fifty-four (77.1%) patients exhibited at least one symptom, and 19 (27.1%) patients exhibited four or more symptoms. The most prevalent symptoms were specific learning disabilities or special education needs (31.4%), inattention/hyperactivity (35.7%), language/speech delays (35.7%), and emotional or behavioral dysregulation (38.6%). Fisher's exact tests indicated that anxiety was more prevalent with mutations upstream of exon 30 (P = .049), but the prevalence of other symptoms did not differ with respect to mutation sites. Similarly, the number of symptoms individual patients with BMD exhibited did not differ with respect to mutation sites. Seventeen (24.3%) patients required pharmacotherapy to manage symptoms. DISCUSSION Neurodevelopmental, behavioral, and emotional symptoms are prevalent in patients with BMD regardless of dystrophin gene mutation site.
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Arya R, Ervin B, Dudley J, Buroker J, Rozhkov L, Scholle C, Horn PS, Vannest J, Byars AW, Leach JL, Mangano FT, Greiner HM, Holland KD, Glauser TA. Electrical stimulation mapping of language with stereo-EEG. Epilepsy Behav 2019; 99:106395. [PMID: 31422309 DOI: 10.1016/j.yebeh.2019.06.038] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Revised: 06/25/2019] [Accepted: 06/27/2019] [Indexed: 11/19/2022]
Abstract
OBJECTIVE We prospectively validated stereo-electroencephalography (EEG) electrical stimulation mapping (ESM) of language against a reference standard of meta-analytic functional magnetic resonance imaging (fMRI) framework (Neurosynth). METHODS Language ESM was performed using 50 Hz, biphasic, bipolar, stimulation at 1-8 mA, with a picture naming task. Electrode contacts (ECs) were scored as ESM+ if ESM interfered with speech/language function. For each patient, presurgical MRI was transformed to a standard space and coregistered with computed tomographic (CT) scan to obtain EC locations. After whole-brain parcellation, this fused image data were intersected with three-dimensional language fMRI (Neurosynth), and each EC was classified as lying within/outside the fMRI language parcel. Diagnostic odds ratio (DOR) and other indices were estimated. Current thresholds for language inhibition and after-discharges (ADs) were analyzed using multivariable linear mixed models. RESULTS In 10 patients (5 females), aged 5.4-21.2 years, speech/language inhibition was noted with ESM on 87/304 (29%) ECs. Stereo-EEG language ESM was a valid classifier of fMRI (Neurosynth) language sites (DOR: 9.02, p < 0.0001), with high specificity (0.87) but poor sensitivity (0.57). Similar diagnostic indices were seen for ECs in frontal or posterior regions, and gray or white matter. Language threshold (3.1 ± 1.5 mA) was lower than AD threshold (4.0 ± 2.0 mA, p = 0.0001). Language and AD thresholds decreased with age and intelligence quotient. Electrical stimulation mapping triggered seizures/auras represented patients' habitual semiology with 1 Hz stimulation. CONCLUSIONS Stereo-EEG ESM can reliably identify cerebral parcels with/without language function but may under detect all language sites. We suggest a 50-Hz stimulation protocol for language ESM with stereo-EEG.
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Wade SL, Cassedy AE, Taylor HG, McNally KA, Kirkwood MW, Stancin T, Horn PS, Kurowski BG. Adolescent quality of life following family problem-solving treatment for brain injury. J Consult Clin Psychol 2019; 87:1043-1055. [PMID: 31556652 DOI: 10.1037/ccp0000440] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
OBJECTIVE To examine changes in quality of life (QoL) in adolescents receiving family problem-solving therapy (F-PST) following traumatic brain injury (TBI). METHOD Adolescents hospitalized for moderate-to-severe TBI were randomized to 1 of 3 ten-session, 6-month long treatments: face-to-face F-PST (n = 34), therapist-guided online F-PST (n = 56), and self-guided online F-PST (n = 60). Participants included 96 boys and 54 girls, of whom 124 were White and 6 were Hispanic. Outcomes were assessed pretreatment and 6 and 9 months later. Adolescents and parents rated adolescent QoL and TBI-related symptoms on the PedsQL and Health and Behavior Inventory (HBI), respectively. We used mixed modeling to examine changes over time and moderators of treatment efficacy. RESULTS Therapist- and self-guided online groups demonstrated improvements in parent-proxy QoL from baseline to 9 months, Cohen's d = 0.75; p = .004 and Cohen's d = 1.30; p < .001, respectively. The face-to-face group had poorer parent-proxy QoL at 6 months (M = 62, SE = 3.4) than either the therapist- (M = 70.9, SE = 2.8) or self-guided online group (M = 71.1, SE = 2.6). There were no changes or group differences in self-reported QoL over time. Similar findings were observed on the HBI. Differential treatment effects on parent-proxy outcomes were found in boys versus girls and in those from single versus 2-parent households. Improvements in parent-proxy HBI ratings mediated QoL improvements. CONCLUSIONS Both online treatments, but not face-to-face F-PST, were associated with clinical improvements, raising questions about our current delivery paradigm. Individual and family moderators of treatment efficacy underscore the potential of personalized treatment. (PsycINFO Database Record (c) 2019 APA, all rights reserved).
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McLane RD, Schmitt LM, Pedapati EV, Shaffer RC, Dominick KC, Horn PS, Gross C, Erickson CA. Peripheral Amyloid Precursor Protein Derivative Expression in Fragile X Syndrome. Front Integr Neurosci 2019; 13:49. [PMID: 31551722 PMCID: PMC6733993 DOI: 10.3389/fnint.2019.00049] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Accepted: 08/16/2019] [Indexed: 01/08/2023] Open
Abstract
Fragile X syndrome (FXS) is the most common inherited form of intellectual disability and is associated with increased risk for autism spectrum disorder (ASD), anxiety, ADHD, and epilepsy. While our understanding of FXS pathophysiology has improved, a lack of validated blood-based biomarkers of disease continues to impede bench-to-bedside efforts. To meet this demand, there is a growing effort to discover a reliable biomarker to inform treatment discovery and evaluate treatment target engagement. Such a marker, amyloid-beta precursor protein (APP), has shown potential dysregulation in the absence of fragile X mental retardation protein (FMRP) and may therefore be associated with FXS pathophysiology. While APP is best understood in the context of Alzheimer disease, there is a growing body of evidence suggesting the molecule and its derivatives play a broader role in regulating neuronal hyperexcitability, a well-characterized phenotype in FXS. To evaluate the viability of APP as a peripheral biological marker in FXS, we conducted an exploratory ELISA-based evaluation of plasma APP-related species involving 27 persons with FXS (mean age: 22.0 ± 11.5) and 25 age- and sex-matched persons with neurotypical development (mean age: 21.1 ± 10.7). Peripheral levels of both Aβ(1–40) and Aβ(1–42) were increased, while sAPPα was significantly decreased in persons with FXS as compared to control participants. These results suggest that dysregulated APP processing, with potential preferential β-secretase processing, may be a readily accessible marker of FXS pathophysiology.
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Holland KD, Bouley TM, Horn PS. Location: A surrogate for personalized treatment of sodium channelopathies. Ann Neurol 2019; 84:1-9. [PMID: 30048009 DOI: 10.1002/ana.25268] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Revised: 05/23/2018] [Accepted: 05/31/2018] [Indexed: 11/11/2022]
Abstract
Voltage-gated sodium channels have been implicated in numerous inherited paroxysmal disorders of the nervous system, muscle, and heart. Our goal is to provide a framework that helps neurologists understand the clinical and treatment implications of sodium channel variants they encounter in clinical practice. This will be accomplished through our objectives of (1) recognizing the relationship between location of a missense sodium channel gene variant and its effect on channel function, and (2) categorizing clinical phenotype based on functional effect of a variant. The relationship between location, function, and treatment response is also discussed. These interactions can be illustrated by the sodium channelopathies seen in people with epilepsy but generalize beyond that disorder. Ann Neurol 2018;83:1-9.
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Gilbert DL, Huddleston DA, Wu SW, Pedapati EV, Horn PS, Hirabayashi K, Crocetti D, Wassermann EM, Mostofsky SH. Motor cortex inhibition and modulation in children with ADHD. Neurology 2019; 93:e599-e610. [PMID: 31315973 DOI: 10.1212/wnl.0000000000007899] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Accepted: 03/20/2019] [Indexed: 12/19/2022] Open
Abstract
OBJECTIVE Compared to typically developing (TD) peers, children with attention-deficit/hyperactivity disorder (ADHD) consistently demonstrate impaired transcranial magnetic stimulation (TMS)-evoked short interval cortical inhibition (SICI) of motor evoked potentials (MEPs) in resting motor cortex (M1). To determine whether perturbed M1 physiology also reflects clinically relevant behavioral dysfunction, we evaluated M1 physiology during a cognitive control task taxing motor response selection/inhibition. METHODS In this case-control study, behavioral ratings, motor skill (assessed using standardized examination), and left M1 physiology were evaluated in 131 right-handed, 8- to 12-year-old children (66 ADHD: mean 10.5 years, 43 male; 65 TD: mean 10.6 years, 42 male). The primary outcomes were MEP amplitudes and SICI, evaluated during rest and during a modified "racecar" Slater-Hammel stop signal reaction task, with TMS pulses administered 150 ms prior to the target go action and after the dynamic stop cue. RESULTS Go responses were significantly slower (p = 0.01) and more variable (p = 0.002) in ADHD. Children with ADHD showed less M1 SICI at rest (p = 0.02) and during go (p = 0.03) and stop trials (p = 0.02). Rest M1 excitability increased during response inhibition task engagement (p < 0.0001). This Task-Related Up-Modulation (TRUM) was less robust across and within groups, with diminished task upmodulation associated with significantly more severe ADHD behavioral ratings and slower stop signal reaction times. CONCLUSION Children with ADHD show anomalous motor cortex physiology, with deficient SICI across behavioral states and less TRUM from rest to action selection. Associations of these physiologic measures with ADHD symptoms and cognitive control measures support further investigation into biological mechanisms.
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Arya R, Mangano FT, Horn PS, Kaul SK, Kaul SK, Roth C, Leach JL, Turner M, Holland KD, Greiner HM. Long-term seizure outcomes after pediatric temporal lobectomy: does brain MRI lesion matter? J Neurosurg Pediatr 2019; 24:200-208. [PMID: 31151097 DOI: 10.3171/2019.4.peds18677] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Accepted: 04/04/2019] [Indexed: 11/06/2022]
Abstract
OBJECTIVE There is emerging data that adults with temporal lobe epilepsy (TLE) without a discrete lesion on brain MRI have surgical outcomes comparable to those with hippocampal sclerosis (HS). However, pediatric TLE is different from its adult counterpart. In this study, the authors investigated if the presence of a potentially epileptogenic lesion on presurgical brain MRI influences the long-term seizure outcomes after pediatric temporal lobectomy. METHODS Children who underwent temporal lobectomy between 2007 and 2015 and had at least 1 year of seizure outcomes data were identified. These were classified into lesional and MRI-negative groups based on whether an epilepsy-protocol brain MRI showed a lesion sufficiently specific to guide surgical decisions. These patients were also categorized into pure TLE and temporal plus epilepsies based on the neurophysiological localization of the seizure-onset zone. Seizure outcomes at each follow-up visit were incorporated into a repeated-measures generalized linear mixed model (GLMM) with MRI status as a grouping variable. Clinical variables were incorporated into GLMM as covariates. RESULTS One hundred nine patients (44 females) were included, aged 5 to 21 years, and were classified as lesional (73%), MRI negative (27%), pure TLE (56%), and temporal plus (44%). After a mean follow-up of 3.2 years (range 1.2-8.8 years), 66% of the patients were seizure free for ≥ 1 year at last follow-up. GLMM analysis revealed that lesional patients were more likely to be seizure free over the long term compared to MRI-negative patients for the overall cohort (OR 2.58, p < 0.0001) and for temporal plus epilepsies (OR 1.85, p = 0.0052). The effect of MRI lesion was not significant for pure TLE (OR 2.64, p = 0.0635). Concordance of ictal electroencephalography (OR 3.46, p < 0.0001), magnetoencephalography (OR 4.26, p < 0.0001), and later age of seizure onset (OR 1.05, p = 0.0091) were associated with a higher likelihood of seizure freedom. The most common histological findings included cortical dysplasia types 1B and 2A, HS (40% with dual pathology), and tuberous sclerosis. CONCLUSIONS A lesion on presurgical brain MRI is an important determinant of long-term seizure freedom after pediatric temporal lobectomy. Pediatric TLE is heterogeneous regarding etiologies and organization of seizure-onset zones with many patients qualifying for temporal plus nosology. The presence of an MRI lesion determined seizure outcomes in patients with temporal plus epilepsies. However, pure TLE had comparable surgical seizure outcomes for lesional and MRI-negative groups.
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Gurbani N, Dye TJ, Dougherty K, Jain S, Horn PS, Simakajornboon N. Improvement of Parasomnias After Treatment of Restless Leg Syndrome/ Periodic Limb Movement Disorder in Children. J Clin Sleep Med 2019; 15:743-748. [PMID: 31053208 DOI: 10.5664/jcsm.7766] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Accepted: 02/06/2019] [Indexed: 11/13/2022]
Abstract
STUDY OBJECTIVES Previous studies have shown that non-rapid eye movement (NREM) sleep parasomnias commonly coexist with restless legs syndrome (RLS) and periodic limb movement disorder (PLMD) in children, leading to speculation that RLS/PLMD may precipitate or worsen parasomnias. However, there are limited data about the effect of the treatment of RLS/PLMD on parasomnias in children. Hence, we performed this study to determine whether the treatment of RLS/PLMD with oral iron therapy is associated with improvement of parasomnias in children. METHODS A retrospective database was created for children with RLS/PLMD who were treated with iron therapy. These participants were followed for at least 1 year at Cincinnati Children's Hospital Medical Center. All participants had ferritin level testing and were treated with iron therapy. In addition, all participants underwent polysomnography before starting iron therapy for RLS/PLMD except for one participant who was already on iron but required a higher dose. Most participants underwent polysomnography after iron therapy. RESULTS A total of 226 participants were identified with the diagnosis of RLS/PLMD. Of these, 50 had parasomnias and 30 of them were treated with iron therapy. Of the 30 participants, RLS symptoms improved in 15 participants (50%) and resolution of parasomnias was noted in 12 participants (40%) participants after iron therapy. Repeat polysomnography after iron therapy was performed in 21 participants (70%). After iron therapy, there was a significant decrease in periodic limb movement index (17.2 ± 8.8 [before] versus 6.7 ± 7.3 [after] events/h, P < .001). In addition, there were significant decreases in PLMS (24.52 ± 9.42 [before] versus 7.50 ± 7.18 [after] events/h, P < .0001), PLMS-related arousals (4.71 ± 1.81 [before] versus 1.35 ± 1.43 [after] events/h, P < .0001), and total arousals (11.65 ± 5.49 [before] versus 8.94 ± 3.65 [after] events/h, P < .01) after iron therapy. CONCLUSIONS Parasomnias are common in our cohort of children with RLS/PLMD. Iron therapy was associated with a significant improvement in periodic limb movement index, RLS symptoms, and resolution of a significant proportion of NREM sleep parasomnias, suggesting that RLS/PLMD may precipitate NREM sleep parasomnia.
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Vawter-Lee M, Lutley A, Lake SW, Fledderjohn S, King A, Horn PS, Wesselkamper KR. Pediatric Epilepsy Readmissions: The Who, When, and Why. Pediatr Neurol 2019; 93:11-16. [PMID: 30704869 DOI: 10.1016/j.pediatrneurol.2018.12.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 12/13/2018] [Accepted: 12/17/2018] [Indexed: 11/27/2022]
Abstract
BACKGROUND Prior studies have demonstrated a pediatric epilepsy readmission rate of 6% to 10% but have not described details of the readmitted patients. We report the characteristics of pediatric patients admitted for epilepsy who were readmitted to the hospital within 30 days of discharge. METHODS An interdisciplinary team was established to individually review and characterize the 30-day readmissions of patients admitted for epilepsy from May 2014 to October 2016. The team contained both inpatient and outpatient neuroscience nurses, care managers, a quality outcomes manager, and child neurology physicians. RESULTS Over a 30-month period we had an all-cause 30-day readmission rate of 8.0%, which was 219 pediatric epilepsy readmissions from 169 patients. We found that 21.5% of readmissions were scheduled, 37% were for progression of chronic epilepsy, 9.6% were for recently diagnosed epilepsy, and 14.6% were for unrelated diagnoses. We classified 21.5% of readmissions as preventable and 64.9% as not preventable. Thirty-five percent of readmissions occurred within seven days of the initial discharge, including 29 of 47 (61.7%) preventable readmissions. The most common reasons for preventable readmissions were problems with the discharge care plan or medication management. CONCLUSIONS We demonstrate that 21.5% of pediatric epilepsy readmissions were scheduled and 21.5% were judged to be preventable. The majority of preventable readmissions occurred within seven days of index discharge. Characterizing epilepsy readmissions is the first step in being able to reduce readmissions.
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Beasley CM, Crowe B, Nilsson M, Wu L, Tabbey R, Hietpas RT, Dean RA, Horn PS. Adaptation of the robust method to large distributions of reference values: program modifications and comparison of alternative computational methods. J Biopharm Stat 2019; 29:516-528. [DOI: 10.1080/10543406.2019.1579223] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Arya R, Ervin B, Wilson JA, Byars AW, Rozhkov L, Buroker J, Horn PS, Scholle C, Fujiwara H, Greiner HM, Leach JL, Rose DF, Mangano FT, Glauser TA, Holland KD. Development of information sharing in language neocortex in childhood-onset drug-resistant epilepsy. Epilepsia 2019; 60:393-405. [PMID: 30740659 DOI: 10.1111/epi.14661] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 01/11/2019] [Accepted: 01/11/2019] [Indexed: 11/26/2022]
Abstract
OBJECTIVE We studied age-related dynamics of information sharing among cortical language regions with electrocorticographic high-gamma modulation during picture-naming and story-listening tasks. METHODS Seventeen epilepsy patients aged 4-19 years, undergoing extraoperative monitoring with left-hemispheric subdural electrodes, were included. Mutual information (MI), a nondirectional measure of shared information, between 16 pairs of cortical regions of interest, was computed from trial-averaged 70-150 Hz power modulations during language tasks. Impact of age on pairwise MI between language regions and their determinants were ascertained with regression analysis. RESULTS During picture naming, significant increase in MI with age was seen between pairwise combinations of Broca's area, inferior precentral gyrus (iPreC), and frontal association cortex (FAC); Wernicke's area and posterior association cortex (PAC); and Broca's and Wernicke's areas. During story listening, significant age-related increase in MI was seen between Wernicke's area and either Broca's area, FAC, or PAC; and between Broca's area and FAC. Significant impact of baseline intelligence quotient was seen on the relationship between age and MI for all pairs, except between Broca's area and iPreC. The mean MI was higher during naming compared to listening for pairs including iPreC with Broca's area, FAC, or PAC and was lower for pairs of Wernicke's area or PAC with anterior language regions. SIGNIFICANCE Information sharing matures with age "within" frontal and temporoparietal language cortices, and "between" Broca's and Wernicke's areas. This study provides evidence for distinct patterns of developmental plasticity within perisylvian language cortex and has implications for planning epilepsy surgery.
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Arya R, Roth C, Leach JL, Middeler D, Wilson JA, Vannest J, Rozhkov L, Greiner HM, Buroker J, Scholle C, Fujiwara H, Horn PS, Rose DF, Crone NE, Mangano FT, Byars AW, Holland KD. Neuropsychological outcomes after resection of cortical sites with visual naming associated electrocorticographic high-gamma modulation. Epilepsy Res 2019; 151:17-23. [PMID: 30721879 DOI: 10.1016/j.eplepsyres.2019.01.011] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Revised: 10/24/2018] [Accepted: 01/28/2019] [Indexed: 11/16/2022]
Abstract
BACKGROUND Language mapping with high-gamma modulation (HGM) has compared well with electrical cortical stimulation mapping (ESM). However, there is limited prospective data about its functional validity. We compared changes in neuropsychological evaluation (NPE) performed before and 1-year after epilepsy surgery, between patients with/without resection of cortical sites showing HGM during a visual naming task. METHODS Pediatric drug-resistant epilepsy (DRE) patients underwent pre-surgical language localization with ESM and HGM using a visual naming task. Surgical decisions were based solely on ESM results. NPE difference scores were compared between patients with/without resection of HGM naming sites using principal component (PC) analysis. Follow-up NPE scores were modeled with resection group as main effect and respective pre-surgical score as a covariate, using analysis of covariance. RESULTS Seventeen native English speakers (12 females), aged 6.5-20.2 years, were included. One year after epilepsy surgery, first PC score increased by (mean ± standard deviation) 14.4 ± 16.5 points in patients without resection, whereas it decreased by 7.6 ± 24.6 points in those with resection of HGM naming sites (p = 0.040). This PC score represented verbal comprehension, working memory, perceptual reasoning (Wechsler subscales); Woodcock-Johnson Tests of Achievement; and Peabody Picture Vocabulary Test. Subsequent analysis showed significant difference in working memory score between patients with/without resection of HGM naming sites (-15.2 points, 95% confidence limits -29.7 to -0.7, p = 0.041). CONCLUSION We highlight the functional consequences of resecting HGM language sites, and suggest that NPE of DRE patients should include comprehensive assessment of multiple linguistic and cognitive domains besides naming ability.
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Orr SL, Turner A, Kabbouche MA, Horn PS, O'Brien HL, Kacperski J, LeCates S, White S, Weberding J, Miller MN, Powers SW, Hershey AD. Predictors of Short-Term Prognosis While in Pediatric Headache Care: An Observational Study. Headache 2019; 59:543-555. [PMID: 30671933 DOI: 10.1111/head.13477] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/11/2018] [Indexed: 12/28/2022]
Abstract
OBJECTIVES To characterize the short-term prognosis of a clinical population of pediatric and young adult patients with migraine and explore predictors of clinical worsening while in care. METHODS This was a retrospective study of all migraine patients seen at the Cincinnati Children's Hospital Headache Center from 09/01/2006 to 12/31/2017, who had at least 1 follow-up visit within 1-3 months of the index visit analyzed. Included data were: age, sex, race, primary ICHD diagnosis, chronic migraine, medication overuse, history of status migrainosus, BMI percentile, headache frequency, headache severity, PedMIDAS score, allodynia, preventive treatment type, lifestyle habits, disease duration, depressive and anxiety symptoms. Clinical worsening was defined as an increase in 4 or more headache days per month between the index visit and the follow-up visit. RESULTS Data for 13,160 visit pairs (index and follow-up), from 5316 patients, were analyzed. Clinical worsening occurred in only 14.5% (1908/13,160), whereas a reduction in headache frequency was observed in 56.8% of visit intervals (7475/13,160), with 34.8% of the intervals (4580/13,160) showing a reduction of 50% or greater. The change in headache frequency was minimal (increase in 0-3 headaches/month) in 28.7% of intervals (3737/13,160). In the multivariable model, the odds of worsening were significantly higher with increasing age, female sex, chronic migraine, status migrainosus, depressive symptoms, higher PedMIDAS scores, and use of nutraceuticals, whereas the odds of worsening were lower for summer visits, caffeine drinkers, higher headache frequencies, and use of pharmaceuticals. CONCLUSIONS The majority of pediatric patients who receive multimodal interdisciplinary care for migraine improve over time. Our findings highlight a set of clinical features that may help in identifying specific factors that may contribute to an unfavorable short-term prognosis.
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Capal JK, Carosella C, Corbin E, Horn PS, Caine R, Manning-Courtney P. EEG endophenotypes in autism spectrum disorder. Epilepsy Behav 2018; 88:341-348. [PMID: 30340903 DOI: 10.1016/j.yebeh.2018.09.036] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 08/19/2018] [Accepted: 09/24/2018] [Indexed: 10/28/2022]
Abstract
OBJECTIVES The association between autism spectrum disorder (ASD) and epilepsy is well-known. Abnormalities on electroencephalography (EEG) results have been reported in patients with ASD without a history of seizures. However, little is known about the relationship between abnormalities on EEG results and the core features of ASD. The purpose of the study was to determine the relationship between the presence of epilepsy and/or abnormalities on EEG results and disease-associated impairments in young children with ASD. METHODS Data were collected from medical records at Cincinnati Children's Hospital Medical Center (CCHMC) of patients with well-characterized ASD. Patients were subdivided into three groups: ASD without epilepsy but with abnormal EEG results, ASD without epilepsy and normal EEG results, and ASD with epilepsy. Developmental (Mullen Scales of Early Learning (MSEL)), adaptive (Vineland Adaptive Behavior Scales (VABS)), behavioral (Child Behavior Checklist), and language (Preschool Language Scales (PLS)) assessments, along with birth and developmental histories, medications, and medical comorbidities were collected. Electroencephalography data were abstracted from reports and included presence, characterization, and location of abnormalities. RESULTS Analysis was performed on 443 patients with ASD. Seventy patients (15.8%) had epilepsy at the time of ASD diagnosis. Out of 372 patients with ASD and no epilepsy, 95 (25.5%) had an abnormal EEG result (67.4% epileptiform, 36.8% other abnormalities). Majority of epileptiform discharges were focal (83%) and most commonly seen in the left temporal region. The group with abnormal EEG results exhibited more impaired adaptive functioning when compared with the group with normal EEG results (p < 0.05). The group with abnormal EEG results was more similar to the group with epilepsy, differing only in expressive language (p < 0.01) and fine motor (p < 0.05) skills on the Mullen Scales. The group with epilepsy exhibited lower scores in all areas of developmental and adaptive functioning compared with the group with normal EEG results (p < 0.05). At the time of analysis, 13 patients (8 in the group with abnormal EEG results, 5 in the group with normal EEG results) developed epilepsy at a mean age of 10.5 years ± 3.3 years. CONCLUSIONS The presence of an abnormal EEG result or epilepsy in the setting of ASD suggests worse developmental and adaptive functioning. Further analysis will help to clarify associations and offer insight into treatment for this subpopulation without epilepsy but with abnormal EEG results.
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Kline-Fath BM, Arroyo MS, Calvo-Garcia MA, Horn PS, Thomas C. Prenatal aqueduct stenosis: Association with rhombencephalosynapsis and neonatal outcome. Prenat Diagn 2018; 38:1028-1034. [PMID: 30229955 DOI: 10.1002/pd.5361] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Revised: 09/05/2018] [Accepted: 09/13/2018] [Indexed: 11/09/2022]
Abstract
BACKGROUND AND PURPOSE To examine prenatal MRI and postnatal imaging in fetuses with congenital aqueductal stenosis (CAS) to determine the frequency of association of rhombencephalosynapsis (RES) and how it may affect neonatal intensive care unit (NICU) course. MATERIALS AND METHODS A single center IRB-approved retrospective study of children with CAS was performed. Prenatal MRI, postnatal images, and clinical data were reviewed. Statistical analysis was performed with SAS statistical software package version 9.3. RESULTS Aqueduct obstruction was confirmed for all 30 participants. Hydrocephalus required shunting in all but one (97%). Fifteen neonates had CAS with rhomboencephalosynapsis (RES) (50%). Although neonatal course between the two groups was comparable, 53% of CAS with RES neonates required feeding assistance versus 20% in CAS only (P = 0.128). Shunting in the CAS with RES group occurred at average of 6 days of life versus CAS group at 55 days (P = 0.196). Biometry measurements showed a statistically significant decrease in pons antero-posterior diameter in both groups (CAS only P = 0.0049 and CAS with RES P = 0.0003) when compared with norms for gestational age. CONCLUSION CAS has a high association with RES. Feeding assistance in the NICU and earlier neurosurgical intervention may be required in patients with CAS who also have RES.
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Beasley CM, Crowe B, Nilsson M, Wu L, Tabbey R, Hietpas RT, Dean R, Horn PS. Reference Limits for Outlier Analyses in Randomized Clinical Trials. Ther Innov Regul Sci 2018; 51:683-737. [PMID: 30227105 DOI: 10.1177/2168479017700679] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Reference limits used in clinical medicine to screen and manage patients are typically developed nonparametrically using reference values from a limited number of healthy subjects using a 95th percentile reference interval. We have evaluated alternative methods of computation and the resulting limits for use in the analyses of treatment-emergent outliers in clinical trials. METHODS We developed a set of alternative reference limits for 38 laboratory analytes based on alternative statistical methods and assessed their relative performance in clinical trial analysis. Performance assessment was based on the clinical credibility of the limits, inferential statistical performance, consideration of incidences for the test drug and control (placebo) in cases where the drug was reasonably believed to be associated with a change in an analyte (positive cases), and in cases where prior analyses failed to demonstrate a change associated with the drug (negative cases). RESULTS Based on consideration of these cases, no single method resulted in optimal limits for all cases considered. However, with the limits developed using clinical trial subjects' values at baseline as reference values, excluding outliers, the robust method and the 98th percentile interval appeared to produce optimal limits across the greatest number of cases considered. CONCLUSION Although no single method of limit computation will result in optimal limits for all outlier analyses for all analytes across all clinical trials, the 98th percentile reference interval robust limits based on clinical trial reference values appeared superior to multiple alternatives considered for such analyses.
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Kline-Fath BM, Arroyo MS, Calvo-Garcia MA, Horn PS, Thomas C. Congenital aqueduct stenosis: Progressive brain findings in utero to birth in the presence of severe hydrocephalus. Prenat Diagn 2018; 38:706-712. [PMID: 29927492 DOI: 10.1002/pd.5317] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Revised: 06/10/2018] [Accepted: 06/13/2018] [Indexed: 11/11/2022]
Abstract
PURPOSE To evaluate the effects of progressive hydrocephalus on the developing brain in a cohort of fetuses diagnosed with congenital aqueduct stenosis by comparing prenatal magnetic resonance imaging and postnatal imaging. METHODS This IRB approved single center retrospective review of prenatally diagnosed children with congenital aqueduct stenosis interrogated changes in the brain between prenatal and postnatal imaging and analyzed statistics using SAS software package version 9.3. RESULTS Thirty fetuses imaged at a mean gestational age of 26 weeks had aqueduct obstruction confirmed by postnatal imaging. Progressive hydrocephalus required shunting in all but one patient (97%). Those patients with increasing hydrocephalus showed increase in ventricular rupture (60%), loss of septal leaflets (47%), and reduction in white matter and corpus callosum volume (43%). Cerebellar ectopia developed in 27% with 6% meeting the criteria for Chiari I malformation. CONCLUSION Hydrocephalus in the fetus results in enlarging ventricular rupture, loss of the septum pellucidum leaflets, volume reduction of brain parenchyma including corpus callosum, and risk for Chiari I anomaly. Given advances in fetal surgery and imaging in the last 3 decades, there may be cause to revisit the idea of in utero cerebral spinal fluid diversion as a means to potentially ameliorate progressive loss of the developing brain.
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