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14 results on '"Christopher Zalewski"'

1. Hearing Loss and Irritability Reporting Without Vestibular Differences in Explosive Breaching Professionals

Author

Claire M. Modica, Brian R. Johnson, Christopher Zalewski, Kelly King, Carmen Brewer, John E. King, Angela M. Yarnell, Matthew L. LoPresti, Peter B. Walker, Kristine C. Dell, Elena Polejaeva, Alycia Quick, Bobby Arnold, Eric M. Wassermann, James R. Stone, Stephen T. Ahlers, and Walter Carr

Subjects
hearing loss, blast overpressure, symptom reporting, career breaching, vestibular, Neurology. Diseases of the nervous system, RC346-429
Abstract

Background: Blast exposure is a potential hazard in modern military operations and training, especially for some military occupations. Helmets, peripheral armor, hearing protection, and eye protection worn by military personnel provide some acute protection from blast effects but may not fully protect personnel against cumulative effects of repeated blast overpressure waves experienced over a career. The current study aimed to characterize the long-term outcomes of repeated exposure to primary blast overpressure in experienced career operators with an emphasis on the assessment of hearing and vestibular outcomes.Methods: Participants included experienced “breachers” (military and law enforcement explosives professionals who gain entry into structures through controlled detonation of charges) and similarly aged and experienced “non-breachers” (non-breaching military and law enforcement personnel). Responses to a clinical interview and performance on audiological and vestibular testing were compared.Results: Hearing loss, ringing in the ears, irritability, and sensitivity to light or noise were more common among breachers than non-breachers. Breachers reported more combat exposure than non-breachers, and subsequently, memory loss and difficulty concentrating were associated with both breaching and combat exposure. Vestibular and ocular motor outcomes were not different between breachers and non-breachers.Conclusion: Hearing-related, irritability, and sensitivity outcomes are associated with a career in breaching. Future studies examining long-term effects of blast exposure should take measures to control for combat exposure.

Published
2020
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2. Discrimination task reveals differences in neural bases of tinnitus and hearing impairment.

Author

Fatima T Husain, Nathan M Pajor, Jason F Smith, H Jeff Kim, Susan Rudy, Christopher Zalewski, Carmen Brewer, and Barry Horwitz

Subjects
Medicine, Science
Abstract

We investigated auditory perception and cognitive processing in individuals with chronic tinnitus or hearing loss using functional magnetic resonance imaging (fMRI). Our participants belonged to one of three groups: bilateral hearing loss and tinnitus (TIN), bilateral hearing loss without tinnitus (HL), and normal hearing without tinnitus (NH). We employed pure tones and frequency-modulated sweeps as stimuli in two tasks: passive listening and active discrimination. All subjects had normal hearing through 2 kHz and all stimuli were low-pass filtered at 2 kHz so that all participants could hear them equally well. Performance was similar among all three groups for the discrimination task. In all participants, a distributed set of brain regions including the primary and non-primary auditory cortices showed greater response for both tasks compared to rest. Comparing the groups directly, we found decreased activation in the parietal and frontal lobes in the participants with tinnitus compared to the HL group and decreased response in the frontal lobes relative to the NH group. Additionally, the HL subjects exhibited increased response in the anterior cingulate relative to the NH group. Our results suggest that a differential engagement of a putative auditory attention and short-term memory network, comprising regions in the frontal, parietal and temporal cortices and the anterior cingulate, may represent a key difference in the neural bases of chronic tinnitus accompanied by hearing loss relative to hearing loss alone.

Published
2011
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3. Tune deafness: processing melodic errors outside of conscious awareness as reflected by components of the auditory ERP.

Author

Allen Braun, Joe McArdle, Jennifer Jones, Vladimir Nechaev, Christopher Zalewski, Carmen Brewer, and Dennis Drayna

Subjects
Medicine, Science
Abstract

Tune deafness (TD) is a central auditory processing disorder characterized by the inability to discriminate pitch, reproduce melodies or to recognize deviations in melodic structure, in spite of normal hearing. The cause of the disorder is unknown. To identify a pathophysiological marker, we ascertained a group of severely affected TD patients using the Distorted Tunes Test, an ecologically valid task with a longstanding history, and used electrophysiological methods to characterize the brain's responses to correct and incorrect melodic sequences. As expected, we identified a neural correlate of patients' unawareness of melodic distortions: deviant notes modulated long-latency auditory evoked potentials and elicited a mismatch negativity in controls but not in affected subjects. However a robust P300 was elicited by deviant notes, suggesting that, as in blindsight, TD subjects process stimuli that they cannot consciously perceive. Given the high heritability of TD, these patients may make it possible to use genetic methods to study cellular and molecular mechanisms underlying conscious awareness.

Published
2008
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4. A new paradigm for assessing postural stability

Author

Talah Wafa, Christopher Zalewski, Chizuko Tamaki, Dragana Barac-Cikoja, Matthew Bakke, and Carmen Brewer

Subjects
Rehabilitation, Biophysics, Orthopedics and Sports Medicine
Abstract

The sensory organization test (SOT) is an established and effective method for assessing postural stability and determining fall risk. SOT equilibrium scores are derived from the relationship between an individual's peak sway amplitude and a standard, theoretically-derived normal limits of stability (tLOS). Determining an individual's postural stability and fall risk based on this one-size-fits-all tLOS may overestimate functional equilibrium scores and underestimate fall risk when personal stability limits (pLOS) are reduced.The purpose of this study is to investigate whether LOS measured from a group of healthy adults is different from the tLOS, and whether SOT equilibrium scores are significantly different when calculated using pLOS versus the standard tLOS.Sixty healthy volunteers were recruited into three age-groups: young (18-39), middle-aged (40-64), and elderly (65-80), with 10 males and 10 females in each age-group. Outcome measures included SOT and LOS. Additional measures o balance perception and functional mobility were obtained including the Activities Balance Confidence (ABC) scale and the timed-up-and-go test (TUG). The tLOS and pLOS were used to calculate standard (tSOT) and personalized (pSOT) equilibrium scores.The mean pLOS from the group of healthy adults was significantly lower than the tLOS. Consequently, the pSOT equilibrium scores were significantly lower than the standard SOT scores derived using the tLOS.Individual measures of LOS are significantly lower than theoretical estimates of the LOS in healthy adults. This suggests that use of tLOS in the calculation of SOT equilibrium scores often overestimates postural stability and may have implications for the determination of fall risk.

Published
2023
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5. Audiometric and Otologic Findings in Children and Young Adults with Neurofibromatosis Type 1 and Plexiform Neurofibromas

Author

Victoria Idowu, Julie Christensen, Andrea M. Gross, Eva Dombi, Jennifer R Miles, Kelly King, Jennifer Chisholm, Christopher Zalewski, Andrea Baldwin, Patricia Whitcomb, Crystal Burgess, Brigitte C Widemann, Carmen C Brewer, and Hung Jeffrey Kim

Subjects
Otorhinolaryngology
Abstract

To characterize otologic and audiologic manifestations in our NF1 cohort and explore the relationship between otologic and audiologic findings in a subset of patients with ear-related plexiform neurofibromas (PNs).Audiologic and otologic clinical evaluations were conducted on 102 patients with NF1 in a natural history study (5-45 years; M = 14.4 years; Mdn = 14). Testing included pure tone and speech audiometry, middle ear function, neurodiagnostic auditory brainstem response (ABR), auditory processing, and MRIs of the head and neck region. Patients referred to this study had an overall higher incidence and burden of PNs than the overall NF1 population.The majority of subjects in this cohort had normal hearing sensitivity (81%) and normal middle ear function (78%). Nineteen participants had hearing loss that ranged in degree from mild to profound, with the majority in the mild range. Hearing loss was twice as likely to be conductive than sensorineural. In patients with ear-related PNs (n = 12), hearing loss was predominantly conductive (60%). Seventy-five percent of ears with PNs had atypical tympanometric tracings that could not be characterized by the classic categories. In all 20 patients with a PN in the temporal bone, the ear canal was affected, and the PNs often extended to the surrounding soft tissue regions.People with NF1-related PNs in the temporal bone and adjacent skull base should have audiometric and otologic monitoring. Addressing hearing concerns should be part of routine clinical evaluations in patients with NF1. Magnetic resonance imaging (MRI) should be performed in patients with NF1 who have hearing loss.3 Laryngoscope, 2022.

Published
2022

7. Hearing Safety From Single- and Double-Pulse Transcranial Magnetic Stimulation in Children and Young Adults

Author

Kelly A. King, Sahana N. Kukke, Christopher Zalewski, Diane L. Damiano, Katharine E. Alter, Mark Hallett, and Carmen C. Brewer

Subjects
Adult, Male, medicine.medical_specialty, Adolescent, genetic structures, Physiology, medicine.medical_treatment, 0206 medical engineering, 02 engineering and technology, Audiology, Article, Double pulse, Hearing protection, Young Adult, 03 medical and health sciences, 0302 clinical medicine, Physiology (medical), otorhinolaryngologic diseases, medicine, Humans, Young adult, Child, Hearing Disorders, Absolute threshold of hearing, business.industry, Hearing Tests, Auditory Threshold, Transcranial Magnetic Stimulation, 020601 biomedical engineering, Transcranial magnetic stimulation, Neurology, Brain Injuries, Auditory Perception, Female, Neurology (clinical), business, 030217 neurology & neurosurgery
Abstract

Purpose Concerns regarding hearing safety have limited the number of studies using transcranial magnetic stimulation (TMS) in children and young adults. The objective of this study was to examine the safety of TMS with regards to hearing in a group of 16 children and young adults (17.3 ± 4.9 years) with and without brain injury. Methods Pure-tone hearing thresholds and distortion-product otoacoustic emissions were measured before and after exposure to single- and paired-pulse TMS (1-2 sessions of 149-446 TMS pulses at a median of 49%-100% maximum stimulator output over a 2.2 hours period). Results No mean change in hearing outcomes was noted. In addition, no clinically significant change in hearing threshold was observed in any participant, and participants did not experience a subjective change in hearing after TMS exposure. Conclusions Single- and double-pulse TMS administered within the parameters used in this study, which included hearing protection, can be used in children and young adults without impacting hearing. This study provides further evidence for hearing safety after TMS exposure in children and young adults.

Published
2017
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9. Rotational Vestibular Assessment

Author

Christopher Zalewski and Christopher Zalewski

Subjects
Acoustic nerve--Physiology, Vestibular function tests, Vestibular nuclei--Physiology
Abstract

This book represents a primary clinical core for audiologists and expands the vestibular assessment battery through a comprehensive discussion of rotational vestibular testing. This text details the various tests that can be performed though rotational assessment, including the benefits and limitations of each. Test interpretation and clinical application of rotational outcome measures data is also discussed.

Published
2018

10. P2‐377: A Support Group for Caregivers of Persons Diagnosed with Lewy Body Dementia

Author

Alex Rae-Grant, Christopher Zalewski, LaToysa Scaife-Rooks, Robert Doheny, Taylor Young, James B. Leverenz, and Lauren Brasse

Subjects
medicine.medical_specialty, Lewy body, Epidemiology, business.industry, Health Policy, medicine.medical_treatment, medicine.disease, Support group, Psychiatry and Mental health, Cellular and Molecular Neuroscience, Developmental Neuroscience, Medicine, Dementia, Neurology (clinical), Geriatrics and Gerontology, business, Psychiatry
Published
2016
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11. Pendred Syndrome

Author

Anne Madeo, Shannon Pryor, Carmen Brewer, Christopher Zalewski, Kelly King, John Butman, Yandan Yang, Hong-Joon Park, and Andrew Griffith

Subjects
Speech and Hearing
Published
2006
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12. Auditory Phenotype of Niemann-Pick Disease, Type C1

Author

Christopher Zalewski, Carmen C. Brewer, Ari Houser, Sandra Gordon-Salant, Nicole M. Yanjanin, Forbes D. Porter, and Kelly A. King

Subjects
Male, medicine.medical_specialty, 1-Deoxynojirimycin, Adolescent, Hearing loss, Otoacoustic Emissions, Spontaneous, Otoacoustic emission, Audiology, Article, Cohort Studies, Speech and Hearing, Cresols, Young Adult, Auditory neuropathy spectrum disorder, hemic and lymphatic diseases, Formaldehyde, medicine, Evoked Potentials, Auditory, Brain Stem, Humans, Longitudinal Studies, Young adult, Enzyme Inhibitors, Child, Hearing Loss, medicine.diagnostic_test, business.industry, nutritional and metabolic diseases, Infant, Niemann-Pick Disease, Type C, Resorcinols, medicine.disease, Drug Combinations, Auditory brainstem response, Otorhinolaryngology, Child, Preschool, Cohort, Disease Progression, Linear Models, Speech Perception, Audiometry, Pure-Tone, Female, medicine.symptom, Audiometry, business, Cohort study
Abstract

Objectives The aim of this study was to comprehensively evaluate the auditory phenotype in Niemann-Pick disease, type C1 (NPC1), to understand better the natural history of this complex, heterogeneous disorder, and to define further the baseline auditory deficits associated with NPC1 so that use of potentially ototoxic interventions (e.g., 2-hydroxypropyl-s-cyclodextrin) may be more appropriately monitored and understood. Design Fifty patients with NPC1 ranging in age from 4 months to 21 years (mean = 9.3 years) enrolled in a natural history/observational study at the National Institutes of Health. The auditory test battery included, when possible, immittance audiometry, pure-tone and speech audiometry, otoacoustic emission testing, and a neurotologic auditory brainstem response study. Longitudinal data were collected on a subset of patients. Results Over half of the cohort exhibited hearing loss involving the high frequencies ranging from a slight to moderate degree, and 74% of patients presented with clinically significant hearing loss involving the frequencies most important to speech understanding (0.5, 1, 2, 4 kHz). Despite the heterogeneity of the sample, results among patients were sufficiently consistent to implicate retrocochlear dysfunction in the majority (66%) of individuals, with (22%) or without (44%) accompanying cochlear involvement. Some patients (10%) presented with a profile for auditory neuropathy spectrum disorder. The combination of cross-sectional and longitudinal data indicates these patients are at risk for a progressive decline in auditory function. Conclusions This is the largest cohort of patients with NPC1 evaluated comprehensively for auditory dysfunction, and results implicate the pathological processes of NPC1 in the manifestation of hearing loss. Patients with NPC1 should be monitored audiologically throughout their lives, beginning at the time of diagnosis. Clinicians and researchers should be aware of this historically overlooked aspect of the phenotype.

Published
2014

13. NEURO/MEDICAL ONCOLOGY

Author

Irene Helenowski, Naoya Hashimoto, Jan J. Heimans, Toshiki Yoshimine, Johan A F Koekkoek, Evelyne Emery, José L. Asencio, Andrea Chamczuck, Carly Bridge, Gilbert Faure, Barbara-Ann Millar, Arthur Rosiello, Michela Casanova, John Freymann, Giulio Bertani, Jun-ich Adachi, Christian LaFougere, Julianne Bloom, Paul Vincent Opinaldo, Tobey J. McDonald, Alexander Khandji, Maciej M. Mrugala, Agnieszka Kowalska, Clifford G. Robinson, Josef Pichler, Jayesh Mehta, Lisa M. DeAngelis, Katie Slusarz, Rachel Grossman, Juan Armando Mejía, Sadhana Kannan, In Ah Kim, Pierre Soubeyran, Nabil Ahmed, Matthew J. Matasar, David A. Reardon, Marie-Laure Tanguy, Andrea Pace, Vani Santosh, Tackeun Kim, Adrienne C. Lahti, John E. Donahue, Pavlina Poloskova, Marc H. A. Jansen, Nilanjana Banerji, Margaret Schwartz, Matthias Kirsch, Robert Jeraj, Guus A.M.S. van Dongen, Samuel Singer, Tom J. Snijders, Santosh Kesari, Riccardo Soffetti, Takashi Sasayama, Diana Ly, Kaoru Kurisu, Carsten Friedrich, Shinji Kawabata, Cedric Revil, Michael A. Jacobs, Ryuichi Hirayama, Wan-Soo Yoon, Kathleen Lupica, Christopher Reilly, Takuichiro Hideo, Miguel Gil, Josep Garcia, Ming Zheng, Edward K. Avila, Mairéad G McNamara, Hartmut Uschmann, Jeffrey S. Weinberg, Craig H. Moskowitz, Jörg Hense, Manmeet Ahluwalia, Georg Bjarnason, David Corwin, Shakti Ramkissoon, Jad Alshami, Eric C. Leuthardt, Paul Dilfer, Margaret Patton, Lindsey Heathcock, Cees van Montfort, Rakesh Kumar Gupta, Akihiko Yoshida, Carmine Maria Carapella, Guy K. Mckhann, Marian Hajduch, Meinhard Nevinny-Stickel, Patricia Bruns, Ashish Suri, Hernán Carranza, David A. Gutman, Carlos Yepes, Patrick Y. Wen, T. Cloughesy, Anna Kaltenboeck, Carlos Bartels, Paul D. Brown, Lisa Fichtel, Lorenzo Giammattei, Steven Hamilton, Nobuyuki Takayama, Nan Lin, Jan Drappatz, Roland Eils, Akihiro Tsuboi, Patrick Urban, Minesh P. Mehta, Remy Gressin, Zarnie Lwin, Clarence Eng, Ian F. Dunn, Sin-Soo Jeun, Alva B. Weir, Elisa Trevisan, silviya Meletath, Fumiyuki Yamasaki, Scott N. Hwang, Navya Nambudiri, Timothy F. Cloughesy, Paolo Rampini, Kathryn J. Ruddy, Justin Kirby, Marc C. Huisman, Normand Laperriere, Abajo Guijarro, Alberto González-Aguilar, David M. Peereboom, Antoine F. Carpentier, Steven M. Greenberg, Chikashi Ishioka, Sarah C. Gaffey, Sneha Arya, Guy M. McKhann, Richard Curry, Takashi Watanabe, Keishi Makino, Radek Trojanec, Hideo Takeshima, Joseph F. Megyesi, Jasmina I. Ivanova, Victor Rodriguez Berrocal, Marcel Kool, Eric Burton, Sandra K. Johnston, Hideyuki Arita, Konstantina Karabatsou, Robert C. Rostomily, Sean Grimm, Ralph G. Dacey, Karl Olson, Sonia Gómez, Harry C. Schouten, Christof M. Kramm, Fred H. Hochberg, Darren Hargrave, Kazuhiko Sugiyama, Wilhelm Boogerd, Stefano Tiziani, Christine McCluskey, Albert H. Kim, Tejpal Gupta, Ida Martinelli, Friedrich-Wilhelm Kreth, Lennea Coombs, Keith L. Ligon, J. Manuel Sarmiento, David R. Macdonald, Holly Dickinson, Cristian Massacesi, Basile Wittwer, Jung-Il Lee, Volker Hovestadt, Mark Smolkin, Sampath Somanna, Ingo K. Mellinghoff, Nancy Ann Oberheim Bush, Sanjeev Francis, Roland Goldbrunner, Jai Ho Choi, John Sampson, Roy Allan Dominique Torcuator, Kathleen R. Lamborn, Simon V. Liubinas, Daniel J. Sargent, Christina K. Cramer, Francine Armentano, Heather Leeper, Stefan Rutkowski, Prakash Shetty, Arivazhagan Arimappamagan, Alicia Ortega, Enrique Jiménez, Kazuhiro Tanaka, Kolette D. Fly, Seunggu Han, Nicolas U. Gerber, David Schiff, Antonella Castellano, Isabel Arrillaga-Romany, Robert J. Wechsler-Reya, Sophie Taillibert, Macarena de la Fuente, Wolfgang Wick, Monica Bennett, Francesco Cognetti, John de Groot, Michael Gonzales, Leon D. Ortiz, Yoshiaki Shiokawa, George Sachs, Ivo Tremont, Charles A. Conrad, Michael D. Taylor, Igor J. Barani, Shannon Langmead, Lisa Sturla, Doosik Kong, Rebecca D. Folkerth, Garrett Riggs, Yoon-La Choi, Carole Soussain, Calvin Soh, Peter Canoll, Mariza Daras, Melissa Hoag, James Rigas, Dana Cernea, Liu Diane, Kenji Wakiya, Sandra Silberman, Ivan A. Reveles, Jeffrey S. Wefel, Wenting Wu, Marie Blonski, MA Majaid, Vanessa A. Nestor, Maurits W.C.B. Sanders, Cynthia Harrison, Ruxandra Costa, Andrea Hawkins-Daarud, Mark R. Gilbert, Ruth Katz, Masayuki Kanamori, Tomek Janicki, Aaron C. Spalding, Dong-Sup Chung, Lauren Foresman, Fateme Salehi, Allan H. Friedman, Eric P. Winer, Robert Kwiecien, Joachim Kuehl, Motoo Nagane, Stanislaw Burzynski, Tomokazu Aoki, Gregory N. Fuller, Nina Paleologos, Darell D. Bigner, Max Wintermark, Adam E. Flanders, Eiichi Ishikawa, Subramanian Hariharan, Doreen Pachow, Glen Stevens, Ulrich Schüller, Jennifer Lycette, Jennifer Garst, Jeffery T. Williams, Gordana Vlahovic, Tjeerd J. Postma, Tribhwan Vats, Isabel Arrilaga, Krista Follmer, Henry S. Friedman, Kenneth Schwartz, James Perry, Jonas M. Sheehan, Christian Grommes, Annette M. Molinaro, Seung-Ho Yang, Peter Lichter, Naoki Kagawa, Trish Whitcomb, Monica Loghin, Amanda L. Bergner, Miroslav Vaverka, Jayashree Kalpathy-Cramer, Chitra Sarkar, Thomas Davidson, Nithya Ramnath, Leland Rogers, Roberta Rudà, Steven A. Toms, Martin Gore, Khê Hoang-Xuan, Emmanuel Gyan, Hani Malone, Jun-ichi Adachi, Jennifer Rifenburg, Stefan M. Pfister, Luis Carlos Mayor, Vanja Vaccaro, Hannah E. Goldstein, Karen Fink, Eva Dombi, Timothy Cloughsey, Sabina Eigenbrod, Jiri Ehrmann, Li Li, Pamela R. Jackson, Makoto Ohno, Craig Nolan, Gerald P. Linette, Tatjana Seute, Eric Bouffet, Patricia M. M. B. Soetekouw, David J. Pisapia, Marc Remke, Susan Snodgras, David Tran, Keiichi Kobayashi, Warren P. Mason, Setsu Sakamoto, Chiara Bosa, Gabriele Schackert, Alfred Yung, David Cachia, Toshihiko Kuroiwa, María Ángeles Vaz Salgado, F. Lonnqvist, Francesca Piludu, Alvina Acquaye, Keisuke Ueki, Jung Ho Han, Kathy Newell, Mythili Shastry, Yoon Jae Cho, Marco Riva, Laura M. Fayad, Kristin Diefes, André O. von Bueren, Ina Ly, Beatrix Lutiger, Hiroyoshi Suzuki, Jeanette K. Doorduijn, Eiji Kohmura, Olivier Chinot, Ichiyo Shibahara, Nathalie Jansen, Marta Del Álamo de Pedro, Scott L. Pomeroy, Andreas Zwergal, Terri S. Armstrong, Elmar Kirches, Daniel P. Cahill, Howard A. Fine, Cezary Szczylik, Stéphane Oudard, Gregg C. Shepard, Mark G. Kris, Andrea Milbourne, Dominique Jennings, Marco Locatelli, Dereck Amakye, Takumi Kudo, Simon Bailey, Alessandra Fabi, Taketoshi Maehara, Soumen Khatua, Caroline Houllier, Klaus J. Müller, Jaishri O. Blakeley, Karen Kelly, Jonathon Yun, Thomas Gergel, Diane Liu, Eric T. Wong, Alin Borha, Brian J. Williams, Rakesh Jalali, Birgit Geoerger, Naosuke Nonoguchi, Julie Walker, Jasmin Jo, Manmohan Singh, Mary Noel, Denise Lally-Goss, Tracy T. Batchelor, Andrea Falini, Maximilian Niyazi, Jeffrey Raizer, Martin J. van den Bent, Aleksandra Gruslova, Phioanh L. Nghiemphu, Kristin R. Swanson, Maaike J. Vos, Jethro Hu, Rebeca Alcalce Pampliega, Craig S. Sauter, Leena Ketonen, Michael A. Vogelbaum, Donald Picker, Robert Hawkins, Chris Halpin, Otto S. Hoekstra, Elizabeth Vera-Bolanos, Ahmad Awada, Sawan Kumar, Alexandra Benouaich-Amiel, Joseph Pernicone, Noriyuki Kawabata, Andrew H. Kaye, David Brachman, Kurt A. Jaeckle, Cameron J. Nowell, Maria Carlo, Tom Mikkelsen, Jorg Dietrich, Tomonari Suzuki, Kohei Fukuoka, Philippe Aftimos, Christine Schmid-Tannwald, Vera Wenter, Valeria Conte, Scott Turner, Brian J A Gill, John D. Cullen, Jiayi Huang, Saurabh Dahiya, Vincent Delwail, Lien Bekaert, Priya Kumthekar, Roberta Seidman, Scott R. Plotkin, Priya Deshpande, Christopher Zalewski, Vaibhav Patel, Peter Kurniali, Martha Nowosielski, Zvi Ram, Susan M. Chang, Dannis G. van Vuurden, Stuart A. Grossman, Vaishali Suri, Rajan Jain, Christine Carico, Ying Yuan, Yoji Yamashita, Bojana Milojkovic-Kerklaan, Yannick Kerloeguen, Michael B. Sisti, Rameen Beroukhim, Andrea Artoni, Frances McSherry, John J. Evans, Mark E. Shaffrey, Lauren E. Abrey, Akshal S. Patel, Laura Bernal-Vaca, Rolf-Dieter Kortmann, Robert Grubb, Mimi Lee, Jörg-Christian Tonn, Shinobu Yamada, Andrés Quintero, Kazuhiko Mishima, Ania Marszalek, Stephen Gancher, Amal Melhem-Bertrandt, Takamitsu Fujimaki, Monika Warmuth-Metz, George Avgeropoulos, Rifaquat Rahman, Franck Bourdeaut, Frank Feleppa, Jennifer Clarke, Meredith A. Reid, Maria Werner-Wasik, Andrew D. Norden, Kenneth D. Swanson, Jeffrey N. Bruce, Chae-Yong Kim, Steven S. Rosenfeld, Haiyan Jiang, Oliver Schnell, Toshihiro Kumabe, Michael J. Sullivan, W. Gladdines, Glenn J. Lesser, Chang-Ho Yun, Epari Sridhar, Sophie Lebouvier-Sadot, Andrea Baldwin, Chirag G. Patil, Thomas Smith, Shin-Ichi Miyatake, Renato LaRocca, Kent C. Shih, Russell C. Rockne, Katsu Mizukawa, Antonio Omuro, Ryuta Saito, Mohamed H. Hamza, Eunju Hurh, Silke Soucek, Michel Lacroix, Brian J. Scott, Thomas Kaley, Tetsuya Yamamoto, Gregory J. Zipfel, Andrew Lin, Elena Pentsova, Carlos Emilio Restrepo, Utkarsh Bhagat, Masao Matsutani, Andrew B. Lassman, Stephanie L. Pugh, Yasuji Miyakita, Manabu Kinoshita, Christian Hagel, D. Brandsma, Jorge M. Otero, Marco Timmer, Ke Zhang, S. Altintas, Thierry Lamy, Hirofumi Hirano, Mehar Chand Sharma, Wafik S. El-Deiry, Peter A. Sims, Evanthia Galanis, Yong-Kil Hong, Terence J. O'Brien, Haruo Sugiyama, Dieta Brandsma, Loretta Barron, Joshua J. Jacobs, Roger Henriksson, Albert Lai, David White, Xiao-Tang Kong, John D. Hainsworth, Petronella J Lugtenburg, Paul A. Northcott, Maryline Barrie, Kenneth J. Cohen, Tanuj Saaraswat, Xiaobu Ye, Sandra Ruland, Diana M. Haninger, Surasak Phuphanich, Marc C. Chamberlain, Kenneth Aldape, Ewa Matczak, Phyo Kim, Peter Bartenstein, Lumir Hrabalek, Howard Y. Chang, Donatella Tampieri, Fumi Higuchi, Katherine S. Panageas, Allicia C. Girvan, Majid Khan, Stevie Threatt, Tareq Juratli, Mitchel S. Berger, Linda Dirven, Michele Nikolai, Emmanuelle DiTomaso, Sarah Leary, Jan H.M. Schellens, Chuanlu Jiang, Michael Glantz, Harald Sontheimer, Michael D. Prados, Mauricio Lema, Marie-Christine Guiot, Shesh N. Rai, Minhee Won, Carlos Vargas, Eva Galanis, Kazunori Arita, David I. Sandberg, Gianluca Ardolino, Sylvain Choquet, Ondrej Kalita, Michael Rytting, Lorenzo Bello, Luis Ley Urzaiz, Martin J.B. Taphoorn, Kourosh Jafari-Khouzani, Alfred Rademaker, Juan Martinez San Millan, Isabelle Aerts, Sergio Bracarda, John Norton, Mark D. Anderson, Barbara Zarino, Jun Ichi Kuratsu, Nicholas Butowski, Derek R. Johnson, James E. Herndon, Diana Giannarelli, Debra LaFrankie, Filippo Cogiamanian, Yasuyoshi Chiba, Hideo Nakamura, Agnes Jager, Caroline Chung, Paula Warren, Frans S. S. Leijten, Peter Hau, Yusuke Oji, Yuichi Hirose, Kathryn Gilliland, Sadao Kaneko, W. K. Alfred Yung, Roger Stupp, Amy Chung, Yutaka Hata, Mary Frances McAleer, Hee-Won Jung, Miloslava Zlevorová, Brendan Killory, Raymond Sawaya, Anita Chawla, John Trusheim, H. Ian Robins, Judy Lima, Prakash Ambady, Barbara O'Brien, Sonia Bermúdez, Howard Colman, Matthias Gromeier, Jean-Sébastien Guillamo, Maria C. Pietanza, Antonello Vidiri, Laura Guyman, Kristin Swanson, Paul Rosenblatt, Joshua L. Dowling, Lakshmi Nayak, Ashlee Drawz, Yu Jung Kim, Mikael L. Rinne, Shlomit Yust-Katz, Jessi Stevens, Katharine J. Drummond, Patricia Wing, Sarah Taylor, Joshua E. Allen, Ron Schaafsma, John DeGroot, Shigetoshi Yano, Paula Rauschkolb, Anupam Kumar, Soichiro Shibui, M. E. van Linde, Shirish M. Gadgeel, Yoshitaka Narita, Nicholas G. Avgeropoulos, Luca Bertero, Hongjun Wang, Jason K. Rockhill, Suriya Jeyapalan, Yukihiko Sonoda, Hikaru Sasaki, Shirley L. Markant, Masamitsu Nishihara, Daniel J. Brat, Alexandra Flowers, Monica Sierra del Rio, Morgan Prust, Adam M. Sonabend, Pierre A. Robe, James J. Dignam, Julia C. Chisholm, Gregory J. Riely, Mary Gerard, Sajeel Chowdhary, Natalie Jäger, Giovanna M. D'Abaco, James J. Culhane, Tatsunori Okamura, Erik P. Sulman, L. Adriana Esparza, Ivo W. Tremont-Lukats, Emily Porensky, Yoshihiro Oka, Marcelo De Carvalho, Brigitte C. Widemann, Stacey Kalambakas, Rolf D. Kortmann, Stewart Goldman, Jaap C. Reijneveld, Andrew Brenner, Jacob Mandel, Riccardo Draghi, Yunus Arik, Shinji Yamashita, Torsten Pietsch, Tanweer Zaidi, Dawid Schellingerhout, Marta Penas-Prado, Veronica Villani, Adriana Olar, Vanessa L. Merker, Matthias Holdhoff, Joke W. Baars, Katrina H. Smith, Arnab Chakravarti, Giorgio Carrabba, Gertjan J.L. Kaspers, Susan Boulton, Peter A. Forsyth, David T.W. Jones, Anne Baldock, Meier Hsu, Soham Dasgupta, Jeremy Rudnick, Arun Rai, Jessica Sun, Naoki Shinojima, Christian Mawrin, Eita Uchida, Jaswinder Jutla, Koichi Ichimura, Alona Muzikansky, Jean Philippe Maire, Louis B. Nabors, Yuko Matsushita, Emilie Le Rhun, Annick Desjardins, Magali Lecavalier-Barsoum, Laurie Rice, Bradford A. Moffat, Kelly Hempfling, Andrew A. Kanner, Mark W. Kieran, Stephanie M. Robert, Hervé Ghesquières, Alba A. Brandes, E. Sander Connolly, Jingxia Liu, David T. Dicker, Katherine B. Peters, Gregory S. Burzynski, Charles Sweeley, Deborah T. Blumenthal, Nicolás Useche, Tulika Ranjan, Thierry Muanza, Mercedes Garcia Villanueva, Fernando Hakim, Yana Krutoshinskaya, Shintaro Fukushima, Ryo Nishikawa, Damien C. Weber, Michael R. Chicoine, Motomasa Furuse, André Busson, Joseph R. Simpson, Gabriele Röhn, Susanne Koeppen, Arjun Sahgal, Fabio M. Iwamoto, Leland Graves, Sarah Iglseder, Taro Yanagawa, Michael Lahn, Ramaswamy Govindan, Eduardo Roberts Cervantes, Eric S. Wong, Nadine Kliese, Feng Tai, Katja von Hoff, Vincenzo Anelli, Trevor J. Pugh, Andrés F. Cardona, Gebra Cuyun Carter, Yuko Watanabe, Bogdana Suchorska, Manuela Caroli, José Luis Asencio, Eudocia Q. Lee, John Floyd, Lucas Moreno, Samantha J Mills, Jun-ichiro Kuroda, Susan Chi, David N. Louis, Aanchal Kakkar, Elizabeth R. Gerstner, Annika Schlamann, Robert Cavaliere, John L. Villano, Asha Das, Petr Kavan, Takaaki Yanagisawa, Luc Taillandier, Jonathan Fratkin, Günther Stockhammer, Tomasz Janicki, Sherese Fralin, Wafik Zaky, Lisa Scarpace, Kazunari Yoshida, Magalie Hilton, Andrey Korshunov, Aliasgar Moiyadi, Alexandra Gorelick, Alfredo Carrato Mena, Yuya Nishiyama, Riccardo Soffietti, Marina Donativi, Andrew S. Chi, Lauren Schaff, Andrew P. Morokoff, Sophie E. M. Veldhuijzen van Zanten, Hans-Joachim Reimers, John G. Stewart, Clare Ferrigno, Jackson Hamilton, Do-Hyun Nam, Samantha Hammond, Regina Krel, Mika Watanabe, Anna K. Nowak, Elina Tsyvkin, Michael W. McDermott, Jacoline E C Bromberg, Teiji Tominaga, Laila M. Poisson, Lisa Doherty, Alessia Lodi, Vino Apok, Magdalena Kneblova, Michelle Bell, Carl Jaffe, Sunita Dahr, Maria Koh, Pedro Garciarena, J. Gregory Cairncross, Ana Gómez Rueda, Augustus Perez, Ho Jun Seol, Frank Saran, Camillo Porta, Grace Elzinga, Michael Cloney, and Charles P. Hart

Subjects
Cancer Research, medicine.medical_specialty, business.industry, 010403 inorganic & nuclear chemistry, 01 natural sciences, 0104 chemical sciences, 03 medical and health sciences, Abstracts, 0302 clinical medicine, Oncology, 030220 oncology & carcinogenesis, medicine, Medical physics, Neurology (clinical), business
Published
2013

14. Efficacy and Biomarker Study of Bevacizumab for Hearing Loss Resulting From Neurofibromatosis Type 2-Associated Vestibular Schwannomas.

Author

Blakeley JO, Ye X, Duda DG, Halpin CF, Bergner AL, Muzikansky A, Merker VL, Gerstner ER, Fayad LM, Ahlawat S, Jacobs MA, Jain RK, Zalewski C, Dombi E, Widemann BC, and Plotkin SR

Subjects
Adolescent, Adult, Aged, Angiogenesis Inhibitors administration & dosage, Drug Administration Schedule, Female, Hearing Loss etiology, Humans, Male, Middle Aged, Neurofibromatosis 2 physiopathology, Neuroma, Acoustic physiopathology, Young Adult, Bevacizumab administration & dosage, Biomarkers, Tumor metabolism, Hearing Loss drug therapy, Hearing Loss metabolism, Neurofibromatosis 2 drug therapy, Neurofibromatosis 2 metabolism, Neuroma, Acoustic drug therapy, Neuroma, Acoustic metabolism
Abstract

Purpose: Neurofibromatosis type 2 (NF2) is a tumor predisposition syndrome characterized by bilateral vestibular schwannomas (VSs) resulting in deafness and brainstem compression. This study evaluated efficacy and biomarkers of bevacizumab activity for NF2-associated progressive and symptomatic VSs., Patients and Methods: Bevacizumab 7.5 mg/kg was administered every 3 weeks for 46 weeks, followed by 24 weeks of surveillance after treatment with the drug. The primary end point was hearing response defined by word recognition score (WRS). Secondary end points included toxicity, tolerability, imaging response using volumetric magnetic resonance imaging analysis, durability of response, and imaging and blood biomarkers., Results: Fourteen patients (estimated to yield > 90% power to detect an alternative response rate of 50% at alpha level of 0.05) with NF2, with a median age of 30 years (range, 14 to 79 years) and progressive hearing loss in the target ear (median baseline WRS, 60%; range 13% to 82%), were enrolled. The primary end point, confirmed hearing response (improvement maintained ≥ 3 months), occurred in five (36%) of 14 patients (95% CI, 13% to 65%; P < .001). Eight (57%) of 14 patients had transient hearing improvement above the 95% CI for WRS. No patients experienced hearing decline. Radiographic response was seen in six (43%) of 14 target VSs. Three grade 3 adverse events, hypertension (n = 2) and immune-mediated thrombocytopenic purpura (n = 1), were possibly related to bevacizumab. Bevacizumab treatment was associated with decreased free vascular endothelial growth factor (not bound to bevacizumab) and increased placental growth factor in plasma. Hearing responses were inversely associated with baseline plasma hepatocyte growth factor (P = .019). Imaging responses were associated with high baseline tumor vessel permeability and elevated blood levels of vascular endothelial growth factor D and stromal cell-derived factor 1α (P = .037 and .025, respectively)., Conclusion: Bevacizumab treatment resulted in durable hearing response in 36% of patients with NF2 and confirmed progressive VS-associated hearing loss. Imaging and plasma biomarkers showed promising associations with response that should be validated in larger studies., (© 2016 by American Society of Clinical Oncology.)

Published
2016
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