357 results on '"Kenneth A. Kim"'
Search Results
2. Machine learning optimized DriverDetect software for high precision prediction of deleterious mutations in human cancers
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Herrick Yu Kan Koh, Ulysses Tsz Fung Lam, Kenneth Hon-Kim Ban, and Ee Sin Chen
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DriverDetect ,Machine learning ,Cancer driver ,Mutations ,Deleterious ,Precision prediction ,Medicine ,Science - Abstract
Abstract The detection of cancer-driving mutations is important for understanding cancer pathology and therapeutics development. Prediction tools have been created to streamline the computation process. However, most tools available have heterogeneous sensitivity or specificity. We built a machine learning-derived algorithm, DriverDetect that combines the outputs of seven pre-existing tools to improve the prediction of candidate driver cancer mutations. The algorithm was trained with cancer gene-specific mutation datasets of cancer patients to identify cancer drivers. DriverDetect performed better than the individual tools or their combinations in the validation test. It has the potential to incorporate future novel prediction algorithms and can be retrained with new datasets, offering an expanded application to pan-cancer analysis for cross-cancer study. (115 words).
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- 2024
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3. Scalable Data Driven Models for Control of Multi-Fuel Compression Ignition Engine.
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Sathya Aswath Govind Raju, Zongxuan Sun, Kenneth S. Kim, and Chol-Bum M. Kweon
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- 2024
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4. A Comprehensive Assessment of Soft-tissue Sagging after Zygoma Reduction Surgery through Artificial Intelligence Analysis
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Yun Yong Park, MD, Kenneth K. Kim, MD, and Bumjin Park, MD
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Surgery ,RD1-811 - Abstract
Background:. Overdevelopment of zygomatic bones often results in protrusion and flaring of the midfacial region. This makes the face appear squarer than the more favorable oval shape. Therefore, zygoma reduction surgery has become a commonly performed procedure in patients seeking to obtain an ideal facial shape. Facial soft-tissue ptosis is one of the main complications of zygoma reduction surgery. Previously, the evaluation of cheek soft-tissue ptosis was subjectively based on patients and surgeons. Our study aimed to provide an objective evaluation of soft-tissue sagging in the cheek region after zygoma reduction surgery using artificial intelligence (AI). Methods:. We used AI to evaluate cheek sagging in a series of patients who underwent zygoma reduction surgery. We used four methods: tracking facial landmarks, detecting changes in the cheek curvature, and examining changes in the nasolabial fold and marionette lines. Then, the obtained numerical results were assessed for statistically significant differences using statistical validation methods. Results:. Use of AI with the four methods demonstrated no statistically significant differences between the pre- and postsurgery evaluations. AI analysis demonstrated that soft-tissue ptosis did not occur in our series of patients. Conclusions:. AI offers objective evaluation for both patients and doctors. Future research could build on this application to examine various influencing factors and develop new tools using machine learning to evaluate and predict the extent of cheek sagging in patients before surgery.
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- 2024
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5. Venolymphatic malformation of the Vulva: A case report
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Shelby A.H. Chun Fat, Kenneth H. Kim, Eugene S. Kim, and Victor Chien
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Lymphangioma ,Venous malformation ,Lymphatic malformation ,Case report ,Pediatrics ,RJ1-570 ,Surgery ,RD1-811 - Abstract
Introduction: Venolymphatic malformations are benign, but rare congenital lesions that can be found throughout the body. They tend to grow in size along with the patient, and thus are especially rare in the pre-adolescent pediatric population. In this article, we present a case of a vulvar lymphatic/vascular malformation in a 3-year-old female. Case Presentation: A 3-year-old, otherwise healthy, female presented with a labial/clitoral mass that had been growing over the past 2 years. A previous biopsy demonstrated benign vascular proliferation with stromal components, concerning for a vascular malformation versus hamartoma. Pelvic MRI was consistent with a lymphatic malformation. She was evaluated by both a pediatric endocrinologist and a genetic counselor who ruled out underlying hormonal abnormalities, such as central puberty or congenital adrenal hyperplasia, or genetic causes, such as neurofibromatosis 1. The 3.6 × 2.1 × 1.7cm mass was surgically excised with a multidisciplinary team with pediatric surgery, gynecologic oncology, and plastic and reconstructive surgery with final pathology demonstrating a lymphatic/vascular malformation. A rotational advancement flap was used to reconstruct the area. At 9 months, the sensation was preserved with good cosmesis. Conclusion: Vulvar venolymphatic malformations in the pediatric population are exceedingly rare. This is a highly sensitive area and should thus be approached both methodically and cautiously with a multidisciplinary approach.
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- 2024
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6. Pseudocryptic diversity and species boundaries in the sea cucumber Stichopus cf. horrens (Echinodermata: Stichopodidae) revealed by mitochondrial and microsatellite markers
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Apollo Marco D. Lizano, Kenneth M. Kim, Marie Antonette Juinio-Meñez, and Rachel Ravago-Gotanco
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Cryptic species ,Species boundaries ,Sea cucumbers ,Stichopodidae ,Mitochondrial COI ,Microsatellite ,Medicine ,Science - Abstract
Abstract Morphologically cryptic and pseudo-cryptic species pose a challenge to taxonomic identification and assessments of species diversity and distributions. Such is the case for the sea cucumber Stichopus horrens, commonly confused with Stichopus monotuberculatus. Here, we used mitochondrial cytochrome oxidase subunit I (COI) and microsatellite markers to examine genetic diversity in Stichopus cf. horrens throughout the Philippine archipelago, to aid species identification and clarify species boundaries. Phylogenetic analysis reveals two recently diverged COI lineages (Clade A and Clade B; c. 1.35–2.54 Mya) corresponding to sequence records for specimens identified as S. monotuberculatus and S. horrens, respectively. Microsatellite markers reveal two significantly differentiated genotype clusters broadly concordant with COI lineages (Cluster 1, Cluster 2). A small proportion of individuals were identified as later-generation hybrids indicating limited contemporary gene flow between genotype clusters, thus confirming species boundaries. Morphological differences in papillae distribution and form are observed for the two species, however tack-like spicules from the dorsal papillae are not a reliable diagnostic character. An additional putative cryptic species was detected within Clade B-Cluster 2 specimens warranting further examination. We propose that these lineages revealed by COI and genotype data be referred to as Stichopus cf. horrens species complex.
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- 2024
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7. Online Learning and Control of An Internal Combustion Engine for UAS Using Simplex Tessellation and Recursive Least Squares.
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Holden Tranquillo, Jack Sonstegard, Kenneth S. Kim, Chol-Bum M. Kweon, and Perry Y. Li
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- 2023
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8. Optimisation of a Sustainable Biogas Production from Oleochemical Industrial Wastewater
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Jamaluddin, Mohd Faizan, Yeoh, Kenneth Tiong Kim, Choo, Chee Ming, Guillaume, Marie Laurina Emmanuelle Laurel-Angel, Ng, Lik Yin, Chok, Vui Soon, Kacprzyk, Janusz, Series Editor, Gomide, Fernando, Advisory Editor, Kaynak, Okyay, Advisory Editor, Liu, Derong, Advisory Editor, Pedrycz, Witold, Advisory Editor, Polycarpou, Marios M., Advisory Editor, Rudas, Imre J., Advisory Editor, Wang, Jun, Advisory Editor, Vasant, Pandian, editor, Shamsul Arefin, Mohammad, editor, Panchenko, Vladimir, editor, Thomas, J. Joshua, editor, Munapo, Elias, editor, Weber, Gerhard-Wilhelm, editor, and Rodriguez-Aguilar, Roman, editor
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- 2023
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9. Carbon Footprint Optimization for Efficient Effluent Treatment Selection by Using Fuzzy Optimization Modelling
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Yeoh, Kenneth Tiong Kim, Choo, Chee Ming, Jamaluddin, Mohd Faizan, Lim, Geen Yue, Chew, Jun Hao, Ng, Lik Yin, Kacprzyk, Janusz, Series Editor, Gomide, Fernando, Advisory Editor, Kaynak, Okyay, Advisory Editor, Liu, Derong, Advisory Editor, Pedrycz, Witold, Advisory Editor, Polycarpou, Marios M., Advisory Editor, Rudas, Imre J., Advisory Editor, Wang, Jun, Advisory Editor, Vasant, Pandian, editor, Shamsul Arefin, Mohammad, editor, Panchenko, Vladimir, editor, Thomas, J. Joshua, editor, Munapo, Elias, editor, Weber, Gerhard-Wilhelm, editor, and Rodriguez-Aguilar, Roman, editor
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- 2023
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10. The Singapore National Precision Medicine Strategy
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Wong, Eleanor, Bertin, Nicolas, Hebrard, Maxime, Tirado-Magallanes, Roberto, Bellis, Claire, Lim, Weng Khong, Chua, Chee Yong, Tong, Philomena Mei Lin, Chua, Raymond, Mak, Kenneth, Lim, Tit Meng, Cheong, Wei Yang, Thien, Kwee Eng, Goh, Khean Teik, Chai, Jin-Fang, Lee, Jimmy, Sung, Joseph Jao-Yiu, Wong, Tien Yin, Chin, Calvin Woon Loong, Gluckman, Peter D., Goh, Liuh Ling, Ban, Kenneth Hon Kim, Tan, Tin Wee, Sim, Xueling, Cheng, Ching-Yu, Davila, Sonia, Karnani, Neerja, Leong, Khai Pang, Liu, Jianjun, Prabhakar, Shyam, Maurer-Stroh, Sebastian, Verma, Chandra Shekhar, Krishnaswamy, Pavitra, Goh, Rick Siow Mong, Chia, Irenaeus, Ho, Clarissa, Low, Doreen, Virabhak, Suchin, Yong, Jacklyn, Zheng, Weiling, Seow, Shih Wee, Seck, Yee Kwang, Koh, Mingshi, Chambers, John C., Tai, E. Shyong, and Tan, Patrick
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- 2023
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11. Accelerometer-Based Robust Estimation of In-Cylinder Pressure for Cycle-to-Cycle Combustion Control.
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Woongsun Jeon, Anastasis Georgiou, Zongxuan Sun, David A. Rothamer, Kenneth S. Kim, Chol-Bum M. Kweon, and Rajesh Rajamani
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- 2023
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12. The Rationale of Coronal Approach to Malar/Zygoma Reduction
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Jae-Yoon Seol, MD, PhD and Kenneth K. Kim, MD, FACS
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Surgery ,RD1-811 - Abstract
Background:. Malar/zygoma reduction is an effective procedure to change a broader, flatter facial appearance to an oval facial shape. Of the intraoral and coronal approaches, the intraoral is the more commonly used technique than the coronal, due to the perception that complications with the coronal approach are significant, and intraoral results are satisfactory. We compared the postoperative effects of both approaches. Methods:. From 1994 to 1999, we included the 150 intraoral cases that were followed up for 3 years postoperatively. From 2000 to 2018, we changed our technique to the coronal approach and included the 575 cases that were followed up for 3 years postoperatively. We compared the results of our prior intraoral approach with the more recent coronal approach. Results:. All cases of the intraoral approach resulted in smaller-sized faces horizontally; however, 90 patients (60%) still had resulting flat-shaped faces due to acute angle formation in the resultant zygoma. There were 141 cases (94%) of partial malunion and 138 cases (92%) of midface ptosis. Among the 575 coronal approaches, 518 cases (90%) resulted in an oval facial shape without acute angled zygoma. There were 161 cases (28%) of visible incision scars, 466 cases (81%) of temporary alopecia, 12 cases (2%) of hematoma, and 29 cases (5%) of temporary frontal facial nerve injury. Conclusions:. The intraoral approach led to flat and acute zygomas. The majority of patients experienced midface soft tissue ptosis. In contrast, the coronal approach led to an oval facial shape. The most notable complications of the coronal approach were visible scars and temporary alopecia.
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- 2023
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13. Lipid nanoparticles (LNP) induce activation and maturation of antigen presenting cells in young and aged individuals
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Jennifer Connors, David Joyner, Nathan J. Mege, Gina M. Cusimano, Matthew R. Bell, Jennifer Marcy, Bhavani Taramangalam, Kenneth M. Kim, Paulo J. C. Lin, Ying K. Tam, Drew Weissman, Michele A. Kutzler, Mohamad-Gabriel Alameh, and Elias K. Haddad
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Biology (General) ,QH301-705.5 - Abstract
The role of empty lipid nanoparticles in eliciting dendritic cell maturation and innate immune signaling is shown to be impaired in older adults, potentially contributing to lower immune responses to SARS-CoV-2 mRNA-based vaccines.
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- 2023
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14. Outcomes of single port robotic sacrocolpopexy compared with multi-port approaches
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Nicole Whitmyre, Lauren Griebel, Skye Buckner-Petty, Kenneth H. Kim, and Johnny Yi
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Sacrocolpopexy ,Single-port robotic ,Minimally invasive urogynecologic surgery ,Surgery ,RD1-811 - Abstract
Importance: Scientific literature currently lacks data on surgical outcomes of single-port robotic sacrocolpopexy compared with traditional multi-port approaches. Objectives: To evaluate feasibility and surgical outcomes for the single-port robotic approach to sacrocolpopexy when compared with traditional multi-port approaches. Study design: Retrospective chart review of fifty patients who underwent minimally invasive sacrocolpopexy with a single urogynecologist between 2018 and 2021 at an academic tertiary care hospital. Patients were divided into three cohorts: laparoscopic multi-port (LMP), robotic multi-port (RMP), and robotic single-port (RSP). Outcome measures were operative time, number of adverse events, and severity of adverse events by Clavien-Dindo. Results: All patients underwent at least one concomitant procedure; however, LMP had more concomitant procedures compared to RMP and RSP (p
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- 2023
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15. Carbon Footprint Optimization for Efficient Effluent Treatment Selection by Using Fuzzy Optimization Modelling
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Yeoh, Kenneth Tiong Kim, primary, Choo, Chee Ming, additional, Jamaluddin, Mohd Faizan, additional, Lim, Geen Yue, additional, Chew, Jun Hao, additional, and Ng, Lik Yin, additional
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- 2023
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16. Closed-Loop Diesel Combustion Control Leveraging Ignition Assist.
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Omar Y. Ahmed, Robert J. Middleton, Anna G. Stefanopoulou, Kenneth S. Kim, and Chol-Bum M. Kweon
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- 2022
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17. Identity-related experiences of Asian American trainees in gynecologic oncology
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Jhalak Dholakia, Yeon Woo Lee, Karen H. Lu, Warner K. Huh, S. Diane Yamada, Katherine C. Fuh, Amanika S. Kumar, Margaret I. Liang, Navya Nair, and Kenneth H. Kim
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Gynecology and obstetrics ,RG1-991 ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Background: Anti-Asian violence increased during the COVID-19 pandemic. Asian American/Pacific Islanders (AAPI) represent a diverse population experiencing a long history of stereotyping and exclusionism; however, this group is often left out of diversity/inclusion conversations. In academic medicine, AAPI are under-represented in leadership. We characterized the personal/professional experiences of AAPI gynecologic oncology trainees and assessed the impact of a virtual panel discussion with leaders in the field. Methods: An anonymous survey was disseminated online to trainees in/interested in gynecologic oncology fellowship who identified as AAPI, using modified snowball sampling. A virtual session with AAPI leaders in gynecologic oncology discussed themes emerging from survey responses. Session attendees completed an anonymous follow-up survey. Results were assessed quantitatively and qualitatively. Results: 44/59 (75%) respondents participated in the pre-survey; 23 (39%) participated in the virtual session. All session participants (23/23, 100%) completed the post-session survey. Participants reported increased identity-related thoughts with the COVID-19 pandemic (88% during, 61% prior). Sixty-eight percent reported that identity-related thoughts/awareness changed during the pandemic. Presence of AAPI colleagues was associated with higher perceived identity-related support from their department. Of those without AAPI coworkers, none (0%) felt ‘moderately’ or ‘extremely well supported.’ Qualitative analysis demonstrated that the panel discussion created a sense of community and encouragement, combating previously reported isolation and self-consciousness. Participants reported more connection with their heritage and identified more personal/professional topics that might be related to their cultural backgrounds. Discussion: This intervention demonstrates the opportunity to provide a supportive network for mentorship and professional development in a culturally inclusive way.
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- 2022
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18. A multi-task CNN learning model for taxonomic assignment of human viruses
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Haoran Ma, Tin Wee Tan, and Kenneth Hon Kim Ban
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Convolutional neural network ,Deep learning ,Taxonomic assignment ,Genomic coverage ,Naïve Bayesian network ,Computer applications to medicine. Medical informatics ,R858-859.7 ,Biology (General) ,QH301-705.5 - Abstract
Abstract Background Taxonomic assignment is a key step in the identification of human viral pathogens. Current tools for taxonomic assignment from sequencing reads based on alignment or alignment-free k-mer approaches may not perform optimally in cases where the sequences diverge significantly from the reference sequences. Furthermore, many tools may not incorporate the genomic coverage of assigned reads as part of overall likelihood of a correct taxonomic assignment for a sample. Results In this paper, we describe the development of a pipeline that incorporates a multi-task learning model based on convolutional neural network (MT-CNN) and a Bayesian ranking approach to identify and rank the most likely human virus from sequence reads. For taxonomic assignment of reads, the MT-CNN model outperformed Kraken 2, Centrifuge, and Bowtie 2 on reads generated from simulated divergent HIV-1 genomes and was more sensitive in identifying SARS as the closest relation in four RNA sequencing datasets for SARS-CoV-2 virus. For genomic region assignment of assigned reads, the MT-CNN model performed competitively compared with Bowtie 2 and the region assignments were used for estimation of genomic coverage that was incorporated into a naïve Bayesian network together with the proportion of taxonomic assignments to rank the likelihood of candidate human viruses from sequence data. Conclusions We have developed a pipeline that combines a novel MT-CNN model that is able to identify viruses with divergent sequences together with assignment of the genomic region, with a Bayesian approach to ranking of taxonomic assignments by taking into account both the number of assigned reads and genomic coverage. The pipeline is available at GitHub via https://github.com/MaHaoran627/CNN_Virus .
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- 2021
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19. Cost-effectiveness of hyperthermic intraperitoneal chemotherapy at primary cytoreduction of epithelial ovarian cancer based on residual disease status
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Courtney A. Penn, Erica V. Carballo, Christine S. Walsh, Oliver Zivanovic, and Kenneth H. Kim
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Gynecology and obstetrics ,RG1-991 ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Hyperthermic intraperitoneal chemotherapy (HIPEC) with cisplatin when used at the time of interval cytoreductive surgery (ICS) after neoadjuvant chemotherapy (NACT) has been shown to provide a survival advantage compared to interval cytoreduction alone for patients with advanced epithelial ovarian cancer in a cost-effective manner. A recent large multi-center retrospective cohort study showed a survival advantage with HIPEC given during primary debulking surgery compared to surgery alone. While there is an ongoing randomized controlled trial examining HIPEC at the time of primary cytoreductive surgery (PCS) before chemotherapy (OVHIPEC-2), there is currently no study of this practice in the United States or cost data to inform incorporation of this practice. To help guide the use of HIPEC in the upfront setting until the results of the OVHIPEC-2 are available in 2026, a decision-analytic cost-effectiveness model of the US healthcare sector was developed for patients undergoing PCS with or without HIPEC. Effectiveness inputs were extracted from a Chinese retrospective cohort study of 425 patients who underwent PCS with HIPEC and 159 patients who underwent PCS alone. We found incremental cost effectiveness ratios (ICER) of $9,789 per life year saved (LYS) for optimal PCS, $18,164/LYS for suboptimal PCS, and $7,854/LYS for all patients. Our findings provide preliminary data to support that HIPEC at the time of primary cytoreductive surgery can be considered cost-effective regardless of residual disease status when using a standard willingness to pay threshold.
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- 2022
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20. Immune pathway upregulation and lower genomic instability distinguish EBV-positive nodal T/NK-cell lymphoma from ENKTL and PTCL-NOS
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Cho Mar Myint Wai, Shangying Chen, The Phyu, Shuangyi Fan, Sai Mun Leong, Wenning Zheng, Louis Ching Yi Low, Shoa-Nian Choo, Chi-Kuen Lee, Tae-Hoon Chung, Kenneth Hon Kim Ban, Soumita Ghosh, Stefanus Lie, Seiichi Kato, Shigeo Nakamura, Emiko Takahashi, Young-Hyeh Ko, Joseph D. Khoury, Shih-Sung Chuang, Rex K.H. Au-Yeung, Soo-Yong Tan, Soon-Thye Lim, Choon-Kiat Ong, Yong-Howe Ho, Li Mei Poon, Sanjay de Mel, Anand D. Jeyasekharan, Wee-Joo Chng, Franziska Otto, Leticia Quintanilla-Martinez, Federica Zanardi, Fabio Iannelli, Claudio Tripodo, Jason J. Pitt, and Siok-Bian Ng
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Diseases of the blood and blood-forming organs ,RC633-647.5 - Abstract
Primary Epstein-Barr virus (EBV)-positive nodal T/NK-cell lymphoma (PTCL-EBV) is a poorly understood disease which shows features resembling extranodal NK/T-cell lymphoma (ENKTL) and is currently not recognized as a distinct entity but categorized as a variant of primary T-cell lymphoma not otherwise specified (PTCL-NOS). Herein, we analyzed copynumber aberrations (n=77) with a focus on global measures of genomic instability and homologous recombination deficiency and performed gene expression (n=84) and EBV miRNA expression (n=24) profiling as well as targeted mutational analysis (n=16) to further characterize PTCL-EBV in relation to ENKTL and PTCL-NOS. Multivariate analysis revealed that patients with PTCL-EBV had a significantly worse outcome compared to patients with PTCL-NOS (P=0.002) but not to those with ENKTL. Remarkably, PTCL-EBV exhibited significantly lower genomic instability and homologous recombination deficiency scores compared to ENKTL and PTCL-NOS. Gene set enrichment analysis revealed that many immune-related pathways, interferon α/γ response, and IL6_JAK_STAT3 signaling were significantly upregulated in PTCLEBV and correlated with lower genomic instability scores. We also identified that NFκB-associated genes, BIRC3, NFKB1 (P50) and CD27, and their proteins are upregulated in PTCL-EBV. Most PTCL-EBV demonstrated a type 2 EBV latency pattern and, strikingly, exhibited downregulated expression of most EBV miRNA compared to ENKTL and their target genes were also enriched in immune-related pathways. PTCL-EBV also showed frequent mutations of TET2, PIK3CD and STAT3, and are characterized by microsatellite stability. Overall, poor outcome, low genomic instability, upregulation of immune pathways and downregulation of EBV miRNA are distinctive features of PTCL-EBV. Our data support the concept that PTCL-EBV could be considered as a distinct entity, provide novel insights into the pathogenesis of the disease and offer potential new therapeutic targets for this tumor.
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- 2022
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21. Financial Literacy and Physician Wellness: Can a Financial Curriculum Improve an Obstetrician/Gynecologist Resident and Fellow's Well-Being?
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Chase R. Cawyer, Christina Blanchard, and Kenneth H. Kim
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physician burnout ,personal financial planning ,financial literacy ,physician wellness ,Gynecology and obstetrics ,RG1-991 - Abstract
Objective This study aimed to evaluate the effects of a financial literacy curriculum on resident and fellow's sense of well-being and financial stress. Study Design This single institution pilot study prospectively enrolled obstetrician/gynecologist (OB/GYN) medical trainees (residents and fellows) to take part in a five-part personal financial literacy curriculum during the 2019 to 2020 academic year. Topics covered included the following: financial education and its relationship to personal well-being, overview of financial terms and principles, budgeting, debt planning, and investing and giving. Primary outcomes were the improvement in well-being as measured by the Expanded Well-Being Index (E-WBI) and financial stress as measured by the Financial Stress Scale-College Version (FSS-CV) survey. Results Of the 35 residents and fellows who participated in the study, 21 (60%) completed the postintervention survey. After course completion, there was significant improvement in the individual's E-WBI (p
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- 2022
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22. Large-Scale Whole-Genome Sequencing of Three Diverse Asian Populations in Singapore
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Ackers-Johnson, Matthew Andrew, Aliwarga, Edita, Ban, Kenneth Hon Kim, Bertrand, Denis, Chambers, John C., Chan, Dana Leng Hui, Chan, Cheryl Xue Li, Chee, Miao Li, Chee, Miao Ling, Chen, Pauline, Chen, Yunxin, Chew, Elaine Guo Yan, Chew, Wen Jie, Chiam, Lynn Hui Yun, Chong, Jenny Pek Ching, Chua, Ivan, Cook, Stuart A., Dai, Wei, Dorajoo, Rajkumar, Foo, Chuan-Sheng, Goh, Rick Siow Mong, Hillmer, Axel M., Irwan, Ishak D., Jaufeerally, Fazlur, Javed, Asif, Jeyakani, Justin, Koh, John Tat Hung, Koh, Jia Yu, Krishnaswamy, Pavitra, Kuan, Jyn Ling, Kumari, Neelam, Lee, Ai Shan, Lee, Seow Eng, Lee, Sheldon, Lee, Yen Ling, Leong, See Ting, Li, Zheng, Li, Peter Yiqing, Liew, Jun Xian, Liew, Oi Wah, Lim, Su Chi, Lim, Weng Khong, Lim, Chia Wei, Lim, Tingsen Benson, Lim, Choon Kiat, Loh, Seet Yoong, Lok, Au Wing, Chin, Calvin W.L., Majithia, Shivani, Maurer-Stroh, Sebastian, Meah, Wee Yang, Mok, Shi Qi, Nargarajan, Niranjan, Ng, Pauline, Ng, Sarah B., Ng, Zhenyuan, Ng, Jessica Yan Xia, Ng, Ebonne, Ng, Shi Ling, Nusinovici, Simon, Ong, Chin Thing, Pan, Bangfen, Pedergnana, Vincent, Poh, Stanley, Prabhakar, Shyam, Prakash, Kumar M., Quek, Ivy, Sabanayagam, Charumathi, See, Wei Qiang, Sia, Yee Yen, Sim, Xueling, Sim, Wey Cheng, So, Jimmy, Soon, Dinna K.N., Tai, E. Shyong, Tan, Nicholas Y., Tan, Louis C.S., Tan, Hong Chang, Tan, Wilson Lek Wen, Tandiono, Moses, Tay, Amanda, Thakur, Sahil, Tham, Yih Chung, Tiang, Zenia, Toh, Grace Li-Xian, Tsai, Pi Kuang, Veeravalli, Lavanya, Verma, Chandra S., Wang, Ling, Wang, Min Rui, Wong, Wing-Cheong, Xie, Zhicheng, Yeo, Khung Keong, Zhang, Liang, Zhai, Weiwei, Zhao, Yi, Wu, Degang, Dou, Jinzhuang, Chai, Xiaoran, Bellis, Claire, Wilm, Andreas, Shih, Chih Chuan, Soon, Wendy Wei Jia, Bertin, Nicolas, Lin, Clarabelle Bitong, Khor, Chiea Chuen, DeGiorgio, Michael, Cheng, Shanshan, Bao, Li, Karnani, Neerja, Hwang, William Ying Khee, Davila, Sonia, Tan, Patrick, Shabbir, Asim, Moh, Angela, Tan, Eng-King, Foo, Jia Nee, Goh, Liuh Ling, Leong, Khai Pang, Foo, Roger S.Y., Lam, Carolyn Su Ping, Richards, Arthur Mark, Cheng, Ching-Yu, Aung, Tin, Wong, Tien Yin, Ng, Huck Hui, Liu, Jianjun, and Wang, Chaolong
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- 2019
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23. Transposon mutagenesis identifies cooperating genetic drivers during keratinocyte transformation and cutaneous squamous cell carcinoma progression.
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Aziz Aiderus, Justin Y Newberg, Liliana Guzman-Rojas, Ana M Contreras-Sandoval, Amanda L Meshey, Devin J Jones, Felipe Amaya-Manzanares, Roberto Rangel, Jerrold M Ward, Song-Choon Lee, Kenneth Hon-Kim Ban, Keith Rogers, Susan M Rogers, Luxmanan Selvanesan, Leslie A McNoe, Neal G Copeland, Nancy A Jenkins, Kenneth Y Tsai, Michael A Black, Karen M Mann, and Michael B Mann
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Genetics ,QH426-470 - Abstract
The systematic identification of genetic events driving cellular transformation and tumor progression in the absence of a highly recurrent oncogenic driver mutation is a challenge in cutaneous oncology. In cutaneous squamous cell carcinoma (cuSCC), the high UV-induced mutational burden poses a hurdle to achieve a complete molecular landscape of this disease. Here, we utilized the Sleeping Beauty transposon mutagenesis system to statistically define drivers of keratinocyte transformation and cuSCC progression in vivo in the absence of UV-IR, and identified both known tumor suppressor genes and novel oncogenic drivers of cuSCC. Functional analysis confirms an oncogenic role for the ZMIZ genes, and tumor suppressive roles for KMT2C, CREBBP and NCOA2, in the initiation or progression of human cuSCC. Taken together, our in vivo screen demonstrates an extremely heterogeneous genetic landscape of cuSCC initiation and progression, which can be harnessed to better understand skin oncogenic etiology and prioritize therapeutic candidates.
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- 2021
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24. A multi-task CNN learning model for taxonomic assignment of human viruses
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Ma, Haoran, Tan, Tin Wee, and Ban, Kenneth Hon Kim
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- 2021
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25. An epidemiological surveillance of hand foot and mouth disease in paediatric patients and in community: A Singapore retrospective cohort study, 2013-2018.
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Nyo Min, Yasmin Hui Binn Ong, Alvin X Han, Si Xian Ho, Emmerie Wong Phaik Yen, Kenneth Hon Kim Ban, Sebastian Maurer-Stroh, Chia Yin Chong, and Justin Jang Hann Chu
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Arctic medicine. Tropical medicine ,RC955-962 ,Public aspects of medicine ,RA1-1270 - Abstract
BackgroundWhile hand, foot and mouth disease (HFMD) is primarily self-resolving-soaring incidence rate of symptomatic HFMD effectuates economic burden in the Asia-Pacific region. Singapore has seen a conspicuous rise in the number of HFMD cases from 2010s. Here, we aims to identify the serology and genotypes responsible for such outbreaks in hospitals and childcare facilities.MethodsWe studied symptomatic paediatric HFMD cases from 2013 to 2018 in Singapore. Surveillance for subclinical enterovirus infections was also performed in childcares at the same time period.ResultsGenotyping 101 symptomatic HFMD samples revealed CV-A6 as the major etiological agent for recent outbreaks. We detected infections with CV-A6 (41.0%), EV-A71 (7%), CV-A16 (3.0%), coxsackievirus A2, CV-A2 (1.0%) and coxsackievirus A10, CV-A10 (1.0%). Phylogenetic analysis of local CV-A6 strains revealed a high level of heterogeneity compared against others worldwide, dissimilar to other HFMD causative enteroviruses for which the dominant strains and genotypes are highly region specific. We detected sub-clinical enterovirus infections in childcare centres; 17.1% (n = 245) tested positive for enterovirus in saliva, without HFMD indicative symptoms at the point of sample collection.ConclusionsCV-A6 remained as the dominant HFMD causative strain in Singapore. Silent subclinical enteroviral infections were detected and warrant further investigations.
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- 2021
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26. Transposon insertional mutagenesis in mice identifies human breast cancer susceptibility genes and signatures for stratification
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Chen, Liming, Jenjaroenpun, Piroon, Pillai, Andrea Mun Ching, Ivshina, Anna V., Ow, Ghim Siong, Efthimios, Motakis, Zhiqun, Tang, Tan, Tuan Zea, Lee, Song-Choon, Rogers, Keith, Ward, Jerrold M., Mori, Seiichi, Adams, David J., Jenkins, Nancy A., Copeland, Neal G., Ban, Kenneth Hon-Kim, Kuznetsov, Vladimir A., and Thiery, Jean Paul
- Published
- 2017
27. An Experimental Study of the Effectiveness of Negative Campaign Messaging: Will Outcome Framing Work for Partisans in Polarised Politics?
- Author
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Kenneth E. Kim and Lori M. McKinnon
- Subjects
Communication - Abstract
The current study focuses on the use of outcome framing as a strategic negative message tactic and its impact on partisans. Specifically, this study theorises that the impact of partisan cues such as party affiliation is moderated by differently framed claims in negative political advertising. Participants viewed a negative ad, varying in outcome framing (negative ramifications of electing the targeted candidate versus positive consequences of defeating the target) and partisan matching (in-party versus out-party). Participants were recruited via Amazon’s Mechanical Turk. Experiment 1 ( N = 96), where a Republican candidate was the target of a negative ad, revealed that the persuasiveness of a loss-framed negative ad significantly increased in the out-party versus in-party condition. Experiment 2 ( N = 123), where a Democratic candidate was the target of a negative ad, found that a loss framed-negative ad was significantly more influential than a gain-framed negative ad in both in-party and out-party conditions. Implications exist for design and practice of negative campaign messaging.
- Published
- 2022
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28. An Alignment-Independent Approach for the Study of Viral Sequence Diversity at Any Given Rank of Taxonomy Lineage
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Li Chuin Chong, Wei Lun Lim, Kenneth Hon Kim Ban, and Asif M. Khan
- Subjects
minimal set ,alignment independent ,alignment-free ,sequence diversity ,proteome ,virus ,Biology (General) ,QH301-705.5 - Abstract
The study of viral diversity is imperative in understanding sequence change and its implications for intervention strategies. The widely used alignment-dependent approaches to study viral diversity are limited in their utility as sequence dissimilarity increases, particularly when expanded to the genus or higher ranks of viral species lineage. Herein, we present an alignment-independent algorithm, implemented as a tool, UNIQmin, to determine the effective viral sequence diversity at any rank of the viral taxonomy lineage. This is done by performing an exhaustive search to generate the minimal set of sequences for a given viral non-redundant sequence dataset. The minimal set is comprised of the smallest possible number of unique sequences required to capture the diversity inherent in the complete set of overlapping k-mers encoded by all the unique sequences in the given dataset. Such dataset compression is possible through the removal of unique sequences, whose entire repertoire of overlapping k-mers can be represented by other sequences, thus rendering them redundant to the collective pool of sequence diversity. A significant reduction, namely ~44%, ~45%, and ~53%, was observed for all reported unique sequences of species Dengue virus, genus Flavivirus, and family Flaviviridae, respectively, while still capturing the entire repertoire of nonamer (9-mer) viral peptidome diversity present in the initial input dataset. The algorithm is scalable for big data as it was applied to ~2.2 million non-redundant sequences of all reported viruses. UNIQmin is open source and publicly available on GitHub. The concept of a minimal set is generic and, thus, potentially applicable to other pathogenic microorganisms of non-viral origin, such as bacteria.
- Published
- 2021
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29. Thermomechanical Characterization of Hot Surface Ignition Device Using Phenomenological Heat Flux Model
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Sang-Guk Kang, Je Ir Ryu, Austen H. Motily, Prapassorn Numkiatsakul, Tonghun Lee, Waltraud M. Kriven, Kenneth S. Kim, and Chol-Bum M. Kweon
- Subjects
Fuel Technology ,Space and Planetary Science ,Mechanical Engineering ,Aerospace Engineering - Published
- 2022
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30. Transposon mutagenesis identifies genes that cooperate with mutant Pten in breast cancer progression
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Rangel, Roberto, Lee, Song-Choon, Ban, Kenneth Hon-Kim, Guzman-Rojas, Liliana, Mann, Michael B., Newberg, Justin Y., Kodama, Takahiro, McNoe, Leslie A., Selvanesan, Luxmanan, Ward, Jerrold M., Rust, Alistair G., Chin, Kuan-Yew, Black, Michael A., Jenkins, Nancy A., and Copeland, Neal G.
- Published
- 2016
31. Impact of Ignition Assistant on Combustion of Cetane 30 and 35 Jet-Fuel Blends in a Compression-Ignition Engine at Moderate Load and Speed
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Niranjan Miganakallu, Jacob Stafford, Eri Amezcua, Kenneth S. Kim, Chol-Bum M. Kweon, and David A. Rothamer
- Subjects
Fuel Technology ,Nuclear Energy and Engineering ,Mechanical Engineering ,Energy Engineering and Power Technology ,Aerospace Engineering - Abstract
This study investigates the use of a commercial-off-the-shelf (COTS) ceramic glow-plug to assist ignition of jet fuel blends with cetane numbers of 30 and 35, below the minimum cetane number of 40 for #2 diesel. Experiments were carried out on a single-cylinder compression-ignition engine operating at 1200 RPM for single and dual-injection (pilot + main) timing sweeps. The COTS glow-plug, termed the ignition assistant, was operated at varying input power levels between 0 and 70 W (stock maximum power input is 30 W) at each SOI. Results demonstrate that the use of an ignition assistant at the higher input powers (50 and 70 W) enables operation over a wider range of SOI timings where more advanced times are limited by high pressure-rise rates and more retarded times are limited by rapidly increasing coefficient of variation of gross indicated mean effective pressure. Use of the ignition assistant enables stable combustion at later injection timings increasing the operable range of SOI timings. For the CN 30 fuel, at earlier injection timings, pressure traces, and heat release analysis demonstrated the advancement of start of combustion and combustion phasing with the ignition assistant on. At retarded injection timings where combustion would not otherwise occur completely for the CN 30 fuel, operating the ignition assistant at the higher powers enabled combustion phasing to be advanced and combustion to be stabilized at conditions where, with the ignition assistant off, misfire (flameout) would occur. Furthermore, the ignition assistant enabled combustion phasing to follow an approximately linear response with respect to SOI timing over a wider range of SOI times.
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- 2023
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32. Model Predictive Control of Combustion Phasing in Compression Ignition Engines by Coordinating Fuel Injection Timing and Ignition Assist
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Omar Y. Ahmed, Robert J. Middleton, Vivian Tran, Andrew Weng, Anna G. Stefanopoulou, Kenneth S. Kim, and Chol-Bum M. Kweon
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Control and Systems Engineering - Published
- 2022
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33. Closed-Loop Diesel Combustion Control Leveraging Ignition Assist
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Chol-Bum Kweon, Omar Y. Ahmed, Robert Middleton, Anna G. Stefanopoulou, and Kenneth S. Kim
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Ignition system ,Control and Optimization ,Control and Systems Engineering ,law ,Environmental science ,Diesel combustion ,Closed loop ,Automotive engineering ,law.invention - Published
- 2022
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34. Supplementary Figure and Table Legends from A Phase I Clinical Trial of Ad5.SSTR/TK.RGD, a Novel Infectivity-Enhanced Bicistronic Adenovirus, in Patients with Recurrent Gynecologic Cancer
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Ronald D. Alvarez, David T. Curiel, Kurt R. Zinn, Gene P. Siegal, Rosemarie Aurigemma, Raymond D. Harris, Meredith A. Preuss, Zhiying You, Souheil Saddekni, Minghui Wang, Janis P. O'Malley, Igor Dmitriev, and Kenneth H. Kim
- Abstract
PDF file - 43K
- Published
- 2023
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35. Supplementary Table 2 from A Phase I Clinical Trial of Ad5.SSTR/TK.RGD, a Novel Infectivity-Enhanced Bicistronic Adenovirus, in Patients with Recurrent Gynecologic Cancer
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Ronald D. Alvarez, David T. Curiel, Kurt R. Zinn, Gene P. Siegal, Rosemarie Aurigemma, Raymond D. Harris, Meredith A. Preuss, Zhiying You, Souheil Saddekni, Minghui Wang, Janis P. O'Malley, Igor Dmitriev, and Kenneth H. Kim
- Abstract
PDF file - 81K, Supplementary Table 2 Primers and probe sets utilized in this study were designed by the Primer Express 1.5 software and synthesized by Sigma-Aldrich. These primers and probes were utilized for quantitative PCR in ancillary biologic studies, and the data
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- 2023
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36. Supplementary Figure 1 from A Phase I Clinical Trial of Ad5.SSTR/TK.RGD, a Novel Infectivity-Enhanced Bicistronic Adenovirus, in Patients with Recurrent Gynecologic Cancer
- Author
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Ronald D. Alvarez, David T. Curiel, Kurt R. Zinn, Gene P. Siegal, Rosemarie Aurigemma, Raymond D. Harris, Meredith A. Preuss, Zhiying You, Souheil Saddekni, Minghui Wang, Janis P. O'Malley, Igor Dmitriev, and Kenneth H. Kim
- Abstract
PDF file - 106K, Patients were then assigned into one of three Ad5.SSTR/TK.RGD dose cohorts ranging from 1 x 109 vp/d to 1 x 1012 vp/d (6 x 107 pfu/d to 6 x 1010 pfu/d). This dose administration strategy has been validated in our preclinical studies; assigned Ad5.SSTR/TK
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- 2023
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37. Data from A Phase I Clinical Trial of Ad5.SSTR/TK.RGD, a Novel Infectivity-Enhanced Bicistronic Adenovirus, in Patients with Recurrent Gynecologic Cancer
- Author
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Ronald D. Alvarez, David T. Curiel, Kurt R. Zinn, Gene P. Siegal, Rosemarie Aurigemma, Raymond D. Harris, Meredith A. Preuss, Zhiying You, Souheil Saddekni, Minghui Wang, Janis P. O'Malley, Igor Dmitriev, and Kenneth H. Kim
- Abstract
Purpose: Ad5.SSTR/TK.RGD is an infectivity-enhanced adenovirus expressing a therapeutic thymidine kinase suicide gene and a somatostatin receptor (SSTR) that allows for noninvasive gene transfer imaging. The purpose of this study was to identify the maximum tolerated dose (MTD), toxicities, clinical efficacy, and biologic effects of Ad5.SSTR/TK.RGD in patients with recurrent gynecologic cancer.Experimental Design: Eligible patients were treated intraperitoneally for 3 days with 1 × 109 to 1 × 1012 vp/dose of Ad5.SSTR/TK.RGD followed by intravenous ganciclovir for 14 days. Toxicity and clinical efficacy were assessed using Common Toxicity Criteria (CTC) Adverse Events grading and Response Evaluation Criteria in Solid Tumors (RECIST) criteria. Imaging using In-111 pentetreotide was obtained before and after treatment. Tissue samples were obtained to evaluate for gene transfer, generation of wild-type virus, viral shedding, and antibody response.Results: Twelve patients were treated in three cohorts. The most common vector-related clinical toxicities were grade I/II constitutional or pain symptoms, experienced most often in patients treated at the highest dose. MTD was not identified. Five patients showed stable disease; all others experienced progressive disease. One patient with stable disease experienced complete resolution of disease and normalization of CA125 on further follow-up. Imaging detected increased In-111 pentetreotide retention in patients treated at the highest dose. Ancillary studies showed presence of Ad5.SSTR/TK.RGD virus and HSV1-tk expression in ascites samples collected at various time points in most patients treated within the higher dose cohorts.Conclusions: This study shows the safety, potential efficacy, and possible gene transfer imaging capacity of Ad5.SSTR/TK.RGD in patients with recurrent gynecologic cancer. Further development of this novel gene therapeutic appears to be warranted. Clin Cancer Res; 18(12); 3440–51. ©2012 AACR.
- Published
- 2023
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38. Supplementary Table 1 from A Phase I Clinical Trial of Ad5.SSTR/TK.RGD, a Novel Infectivity-Enhanced Bicistronic Adenovirus, in Patients with Recurrent Gynecologic Cancer
- Author
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Ronald D. Alvarez, David T. Curiel, Kurt R. Zinn, Gene P. Siegal, Rosemarie Aurigemma, Raymond D. Harris, Meredith A. Preuss, Zhiying You, Souheil Saddekni, Minghui Wang, Janis P. O'Malley, Igor Dmitriev, and Kenneth H. Kim
- Abstract
PDF file - 51K, Patients were then assigned into one of three Ad5.SSTR/TK.RGD dose cohorts ranging from 1 x 109 vp/d to 1 x 1012 vp/d (6 x 107 pfu/d to 6 x 1010 pfu/d). This dose administration strategy has been validated in our preclinical studies; assigned Ad5.SSTR/TK
- Published
- 2023
- Full Text
- View/download PDF
39. Evaluation of patterns of progression on poly (ADP-ribose) polymerase inhibitor (PARPi) maintenance in ovarian cancer: a cross-sectional study
- Author
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Victoria R Cerda, Diana Lu, Marla Scott, Kenneth H Kim, Bobbie Jo Rimel, and Mitchell Kamrava
- Subjects
Ovarian Neoplasms ,Obstetrics and Gynecology ,Carcinoma, Ovarian Epithelial ,Middle Aged ,Poly(ADP-ribose) Polymerase Inhibitors ,Piperazines ,Cross-Sectional Studies ,Oncology ,Humans ,Phthalazines ,Female ,Neoplasm Recurrence, Local ,Aged ,Retrospective Studies - Abstract
IntroductionDespite improvement in progression-free survival with poly (ADP-ribose) polymerase inhibitors (PARPi) as maintenance therapy for ovarian cancer, many patients will eventually progress on therapy. Oligoprogression is uniquely suited to considerations of local consolidation therapy in this setting, but not commonly used in ovarian cancer. In this study we evaluated the proportion of patients on PARPi maintenance who developed limited sites of disease, the location of progression, and their natural history.MethodsFrom January 2006 to December 2020, natural language processing software (DEEP6AI) was used to identify 58 patients with ovarian cancer treated with PARPi maintenance after complete or partial response after surgery and platinum-based chemotherapy at our institution. Patients were assessed for presence and location of recurrence based on radiologic findings.ResultsThe median patient age was 65 (IQR 57–71) years. Patients had a median of two lines of chemotherapy prior to starting PARPi. With a median follow-up of 48 (range 12–149) months, 32 (55%) patients had a recurrence on maintenance olaparib and 11 (34%) patients developed oligoprogression (≤3 sites). For the 11 patients with oligoprogression, three patients developed recurrence in one site, five in two sites, and three in three sites. The sites of oligoprogression were pelvic/periaortic nodal (27%), peritoneal (27%), liver (27%), lung/mediastinal (14%), and brain (5%). The median progression-free survival for the entire cohort was 6.0 months (95% CI 4.2 to 7.8); median overall survival was not met. There were no significant differences in overall survival (p=0.81) or progression-free survival (p=0.95) between patients with and without oligoprogression.ConclusionsOne-third of patients on PARPi maintenance experienced oligoprogression defined as limited to ≤3 sites. These patients may benefit from local consolidation therapy. A larger dataset is needed to validate these findings to assess if trials investigating local therapy for these patients is of value.
- Published
- 2021
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40. Development of a clinical decision support system for diabetes care: A pilot study.
- Author
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Livvi Li Wei Sim, Kenneth Hon Kim Ban, Tin Wee Tan, Sunil Kumar Sethi, and Tze Ping Loh
- Subjects
Medicine ,Science - Abstract
Management of complex chronic diseases such as diabetes requires the assimilation and interpretation of multiple laboratory test results. Traditional electronic health records tend to display laboratory results in a piecemeal and segregated fashion. This makes the assembly and interpretation of results related to diabetes care challenging. We developed a diabetes-specific clinical decision support system (Diabetes Dashboard) interface for displaying glycemic, lipid and renal function results, in an integrated form with decision support capabilities, based on local clinical practice guidelines. The clinical decision support system included a dashboard feature that graphically summarized all relevant laboratory results and displayed them in a color-coded system that allowed quick interpretation of the metabolic control of the patients. An alert module informs the user of tests that are due for repeat testing. An interactive graph module was also developed for better visual appreciation of the trends of the laboratory results of the patient. In a pilot study involving case scenarios administered via an electronic questionnaire, the Diabetes Dashboard, compared to the existing laboratory reporting interface, significantly improved the identification of abnormal laboratory results, of the long-term trend of the laboratory tests and of tests due for repeat testing. However, the Diabetes Dashboard did not significantly improve the identification of patients requiring treatment adjustment or the amount of time spent on each case scenario. In conclusion, we have developed and shown that the use of the Diabetes Dashboard, which incorporates several decision support features, can improve the management of diabetes. It is anticipated that this dashboard will be most helpful when deployed in an outpatient setting, where physicians can quickly make clinical decisions based on summarized information and be alerted to pertinent areas of care that require additional attention.
- Published
- 2017
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41. American Society of Plastic Surgeons Evidence-Based Clinical Practice Guideline: Eyelid Surgery for Upper Visual Field Improvement
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Kenneth K. Kim, Mark S. Granick, Gregory A. Baum, Francis Beninger, Kenneth V. Cahill, Katelyn C. Donnelly, Ashton A. Kaidi, Ajaipal S. Kang, Lauren Loeding, Myriam Loyo, Parit A. Patel, Jason Roostaeian, Goretti Ho Taghva, and George M. Varkarakis
- Subjects
Surgeons ,Evidence-Based Medicine ,Eyelids ,Humans ,Surgery ,Visual Fields ,Societies, Medical ,United States - Abstract
A group of experts from different disciplines was convened to develop guidelines for the management of upper visual field impairments related to eyelid ptosis and dermatochalasis. The goal was to provide evidence-based recommendations to improve patient care.A multidisciplinary group of experts representing their specialty organizations was selected. A systematic literature review was performed including topics regarding documentation of the underlying cause for visual field impairment, selection of an appropriate surgical repair, assessment of the type of anesthesia, the use of adjunctive brow procedures, and follow-up assessments. The Grading of Recommendations, Assessment, Development, and Evaluation methodology process was used to evaluate the relevant studies. Clinical practice recommendations were developed using BRIDGE-Wiz (Building Recommendations In a Developers' Guideline Editor) software.Each topic area was assessed. A clinical recommendation was made, and the relevant literature was discussed.The review of the literature revealed varied complication rates and diverse treatment modalities for the correction of upper visual field deficit. Strong recommendations could not be made in most topic areas because of a paucity of methodologically sound studies in the literature. More rigorously designed studies are needed to measure outcomes of interest, with fewer sources of potential error or bias.Therapeutic, V.
- Published
- 2022
42. A multi-task CNN learning model for taxonomic assignment of human viruses
- Author
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Kenneth Hon Kim Ban, Haoran Ma, and Tin Wee Tan
- Subjects
Computer science ,QH301-705.5 ,0206 medical engineering ,Bayesian probability ,Computer applications to medicine. Medical informatics ,R858-859.7 ,Convolutional neural network ,02 engineering and technology ,Computational biology ,Genomic coverage ,Biochemistry ,Ranking (information retrieval) ,Naïve Bayesian network ,03 medical and health sciences ,Bayes' theorem ,Naive Bayes classifier ,Structural Biology ,Taxonomic assignment ,Humans ,Biology (General) ,Molecular Biology ,030304 developmental biology ,0303 health sciences ,SARS-CoV-2 ,business.industry ,Applied Mathematics ,Deep learning ,COVID-19 ,Bayes Theorem ,Pipeline (software) ,Computer Science Applications ,Metagenomics ,Viruses ,Artificial intelligence ,business ,Software ,Algorithms ,020602 bioinformatics - Abstract
Background Taxonomic assignment is a key step in the identification of human viral pathogens. Current tools for taxonomic assignment from sequencing reads based on alignment or alignment-free k-mer approaches may not perform optimally in cases where the sequences diverge significantly from the reference sequences. Furthermore, many tools may not incorporate the genomic coverage of assigned reads as part of overall likelihood of a correct taxonomic assignment for a sample. Results In this paper, we describe the development of a pipeline that incorporates a multi-task learning model based on convolutional neural network (MT-CNN) and a Bayesian ranking approach to identify and rank the most likely human virus from sequence reads. For taxonomic assignment of reads, the MT-CNN model outperformed Kraken 2, Centrifuge, and Bowtie 2 on reads generated from simulated divergent HIV-1 genomes and was more sensitive in identifying SARS as the closest relation in four RNA sequencing datasets for SARS-CoV-2 virus. For genomic region assignment of assigned reads, the MT-CNN model performed competitively compared with Bowtie 2 and the region assignments were used for estimation of genomic coverage that was incorporated into a naïve Bayesian network together with the proportion of taxonomic assignments to rank the likelihood of candidate human viruses from sequence data. Conclusions We have developed a pipeline that combines a novel MT-CNN model that is able to identify viruses with divergent sequences together with assignment of the genomic region, with a Bayesian approach to ranking of taxonomic assignments by taking into account both the number of assigned reads and genomic coverage. The pipeline is available at GitHub via https://github.com/MaHaoran627/CNN_Virus.
- Published
- 2021
43. Free flu shots vs herd immunity in flu vaccination advertising: the interaction of attribute type and message sidedness on flu vaccination judgment
- Author
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Kenneth Eunhan Kim
- Subjects
Marketing ,Persuasion ,Health Policy ,media_common.quotation_subject ,Credence ,05 social sciences ,Context (language use) ,Flu prevention ,Advertising ,Health benefits ,Herd immunity ,Vaccination ,03 medical and health sciences ,0302 clinical medicine ,0502 economics and business ,Community health ,050211 marketing ,030212 general & internal medicine ,Psychology ,media_common - Abstract
Purpose This study aims to examine how the relative importance of a search versus a credence attribute, strategically addressed in a flu vaccination advertisement, varies as a function of message sidedness. A search attribute was designed to highlight the affordability of flu shots, and a credence attribute addressed the potential health benefits of flu vaccination. Design/methodology/approach Two experiments were designed to explore how the relative persuasiveness of search versus credence attributes varies as a function of message sidedness in the context of flu vaccination advertising. In Experiment 1, the search–credence attribute type was manipulated by addressing either the affordability (e.g. “Get free flu shots”) or indirect health benefits of flu vaccines (e.g. “Improve herd immunity/community health”). In Experiment 2, an individual-level credence attribute (e.g. “Strengthen your immune system”) was created and compared to the other two attribute conditions used in Experiment 1: a search versus a societal credence versus an individual credence attribute. Findings Experiment 1 (N = 114) revealed the relative advantage of a search attribute (free flu shots) in the two-sided persuasion. Experiment 2 (N = 193) indicated that the persuasive impact of a societal credence attribute (herd immunity/community health) was greater in the two-sided message condition (vs one-sided message condition). Originality/value Relatively little research has examined how consumers respond to strategic flu prevention and vaccination messages promoting either credence or search attributes. Motivated by the need to investigate the relative effectiveness of stressing “herd immunity” versus “free flu shots” in flu vaccination advertising, this study examines how the effects of these distinct attributes on flu vaccination judgments differ between two-sided (e.g. “No vaccine is 100% effective”) and one-sided persuasion.
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- 2021
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44. The financial burden of PARP inhibitors on patients, payors, and financial assistance programs: Who bears the cost?
- Author
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Allison Guyton, Margaret I. Liang, Whitney N. Goldsberry, Warner K. Huh, Brittani Caddell, Sarah S. Summerlin, and Kenneth H. Kim
- Subjects
Adult ,0301 basic medicine ,Adolescent ,Pharmacy ,Poly(ADP-ribose) Polymerase Inhibitors ,Article ,Olaparib ,Young Adult ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Humans ,Medicine ,Medical prescription ,Rucaparib ,health care economics and organizations ,Aged ,Aged, 80 and over ,Finance ,Descriptive statistics ,business.industry ,Obstetrics and Gynecology ,Middle Aged ,030104 developmental biology ,Oncology ,chemistry ,030220 oncology & carcinogenesis ,Specialty pharmacy ,PARP inhibitor ,Cost sharing ,Female ,Health Expenditures ,business - Abstract
OBJECTIVES: Poly(ADP-ribose) polymerase (PARP) inhibitors are expensive and their use is expanding. We aimed to evaluate cost sharing patterns between patients, payors, and financial assistance programs. METHODS: We identified ovarian cancer patients prescribed a PARP inhibitor from 5/2015–9/2019 using our pharmacy database. Cost information was collected for patients who filled their prescription at our specialty pharmacy. We calculated descriptive statistics for monthly PARP inhibitor costs for patients, payors, and financial assistance programs. We used Wilcoxon rank sum tests to evaluate monthly costs based on insurance characteristics. RESULTS: Seventy-six patients filled 94 different PARP inhibitor prescriptions with 42 (45%) prescriptions obtained using any type of financial assistance program. We analyzed 232 prescription months for the 41 prescriptions with available cost data. This included 18 (44%) prescriptions for rucaparib, 18 (44%) for niraparib, and 5 (12%) for olaparib. The total monthly drug cost was average $12,422 and median $13,700. The monthly out-of-pocket (OOP) cost for patients was average $46 and median $0 (IQR $0–4). Payors had the highest monthly costs with average $12,019 and median $13,662 (IQR $9,914–14,709). Financial assistance programs contributed average $358 and median $0 per month (IQR $0–150). Patients with public (p
- Published
- 2021
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45. High-pressure fuel spray ignition behavior with hot surface interaction
- Author
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Keunsoo Kim, Je Ir Ryu, Kenneth S. Kim, Tonghun Lee, Chol B. m M. Kweon, and Austen Motily
- Subjects
Surface (mathematics) ,Kerosene ,Materials science ,Heating element ,Mechanical Engineering ,General Chemical Engineering ,Nuclear engineering ,Jet fuel ,Propulsion ,Compression (physics) ,law.invention ,Physics::Fluid Dynamics ,Ignition system ,Physics::Plasma Physics ,law ,Physics::Chemical Physics ,Physical and Theoretical Chemistry ,Fuel spray - Abstract
Fuel-flexible aircraft propulsion systems using compression ignition engines will require novel strategies for reducing the ignition delay of low-reactivity fuels to feasible timescales. Hot surface ignition of fuel sprays has been implemented in some practical situations, but the complex nature of flame formation within the spray structure poses significant challenges. In order to design next-generation ignition devices, the capacity of hot surface heating elements to promote fuel spray ignition must be investigated. In this study, a rapid compression machine (RCM) was used to examine the ignition process of a single kerosene-based F-24 jet fuel spray with a cylindrical heating element inserted into the spray periphery. The experiments, performed with moderately high injection pressures of 40 MPa, have demonstrated two modes of ignition governed by surface temperature and insertion depth of the heating element. There exists an optimal position where the heating element tip is located in the fuel vapor cone around the liquid spray. For this configuration, a critical surface temperature was identified (∼1250 K), above which short ignition delays associated with a “spray ignition” mode are consistently achieved. In this case, a local ignition flame kernel propagates downstream to the flame lift-off length before full ignition of the spray. In comparison, below the critical temperature a slower “volumetric” mode results. The extended ignition delays associated with this mode may be impractical for compression ignition engines operating at high speeds and increased altitude.
- Published
- 2021
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46. Global Corporate Finance: A Focused Approach
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Kenneth A Kim, Suk H Kim
- Published
- 2014
47. Double-Eyelid Surgery Using Septoaponeurosis Junctional Thickening Results in Dynamic Fold in Asians
- Author
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Hong Seok Kim, MD, PhD, Kun Hwang, MD, PhD, Chang Kyung Kim, MS, and Kenneth K. Kim, MD, FACS
- Subjects
Surgery ,RD1-811 - Abstract
Background: To avoid a static double-eyelid fold characterized by nonmobile overdepression of the fold, we propose a new surgical approach of using septoaponeurosis junctional thickening (SAJT) to create a dynamic fold. Methods: Six hundred eighty patients underwent double-eyelid surgery using the SAJT fixation technique. The orbital septum was exposed and transversely opened superior to the incision margin. The lower septal stump was trimmed to expose the SAJT. The dermis and orbicularis oculi muscle of the lower flap of the upper eyelid were attached to the SAJT. Patients were followed for 2–8 years (mean, 3.6 y). Anatomic study with 28 upper eyelids from 28 Korean adult cadavers was performed to confirm the histological structure of the SAJT. Results: This technique created a dynamic fold. When the eyes were open, the fold depth was moderate. When the eyes were closed, the fold site was smooth and not depressed. The surgery had a 95% patient satisfaction rate (365 responded as satisfied and 236 responded as very satisfied). Postoperative complications included partial or complete loss of the double-eyelid line in 14 and 4 cases, respectively, hypertrophic scar formation in 7 cases, and asymmetric fold in 8 cases. Conclusions: The authors introduce a double-eyelid surgery technique using the SAJT. This SAJT fixation technique creates a dynamic double-eyelid fold. Our study showed a high patient satisfaction rate and that the resulting fold mimics the movement of the congenital supratarsal fold in Asians.
- Published
- 2013
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48. Preclinical development and qualification of ZFN-mediated CCR5 disruption in human hematopoietic stem/progenitor cells
- Author
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David L DiGiusto, Paula M Cannon, Michael C Holmes, Lijing Li, Anitha Rao, Jianbin Wang, Gary Lee, Philip D. Gregory, Kenneth A Kim, Samuel B Hayward, Kathleen Meyer, Colin Exline, Evan Lopez, Jill Henley, Nancy Gonzalez, Victoria Bedell, Rodica Stan, and John A Zaia
- Subjects
Genetics ,QH426-470 ,Cytology ,QH573-671 - Abstract
Gene therapy for HIV-1 infection is a promising alternative to lifelong combination antiviral drug treatment. Chemokine receptor 5 (CCR5) is the coreceptor required for R5-tropic HIV-1 infection of human cells. Deletion of CCR5 renders cells resistant to R5-tropic HIV-1 infection, and the potential for cure has been shown through allogeneic stem cell transplantation with naturally occurring homozygous deletion of CCR5 in donor hematopoietic stem/progenitor cells (HSPC). The requirement for HLA-matched HSPC bearing homozygous CCR5 deletions prohibits widespread application of this approach. Thus, a strategy to disrupt CCR5 genomic sequences in HSPC using zinc finger nucleases was developed. Following discussions with regulatory agencies, we conducted IND-enabling preclinical in vitro and in vivo testing to demonstrate the feasibility and (preclinical) safety of zinc finger nucleases-based CCR5 disruption in HSPC. We report here the clinical-scale manufacturing process necessary to deliver CCR5-specific zinc finger nucleases mRNA to HSPC using electroporation and the preclinical safety data. Our results demonstrate effective biallelic CCR5 disruption in up to 72.9% of modified colony forming units from adult mobilized HSPC with maintenance of hematopoietic potential in vitro and in vivo. Tumorigenicity studies demonstrated initial product safety; further safety and feasibility studies are ongoing in subjects infected with HIV-1 (NCT02500849@clinicaltrials.gov).
- Published
- 2016
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49. Subbrow Lift Using Frontalis Sling to Correct Lateral Orbital Laxity
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Kenneth K. Kim and Hong Seok Kim
- Subjects
Blepharoplasty ,Male ,medicine.medical_treatment ,Eyebrow ,Aging eyelids ,030230 surgery ,03 medical and health sciences ,0302 clinical medicine ,medicine ,Blepharoptosis ,Humans ,Frontalis muscle ,030223 otorhinolaryngology ,Orbital septum ,Subbrow ,Periorbita ,Forehead lift ,Orbicularis oculi muscle ,business.industry ,Eyelids ,Anatomy ,Middle Aged ,Supraorbital nerve ,medicine.anatomical_structure ,Rhytidoplasty ,Original Article ,Female ,Surgery ,Eyebrows ,business ,Frontalis - Abstract
Background In order to correct upper lid laxity, upper blepharoplasty, subbrow excision, and forehead lift have been utilized. Our newly developed subbrow excision attaches the orbicularis oculi muscle to the frontalis muscle. This improves the longevity of the result without inhibiting the gliding plane of the periorbita. Method From January 2016 to July 2018, 564 patients were operated on using this technique. Among them, 41 were male and 523 were female with the average age of 59.5 years. The average size of the subbrow excision was 55 mm × 8 mm. From the upper skin incision site, the upper dissection proceeded cephalad in the subcutaneous plane just above the orbicularis oculi muscle to the point where the frontalis muscle was seen. The lower flap was created by incising the orbicularis oculi muscle 5 mm cephalad to the distal skin incision. From this 5-mm orbicularis muscle stump, the dissection proceeded caudally in a plane between the orbicularis muscle and the orbital septum. Once this flap was created, the 5-mm muscle stump was attached to the exposed frontalis muscle in a horizontal mattress fashion in three areas. The skin incision was then closed. Three months after the operation, a satisfaction survey was conducted using the Likert scale. Results The patients were followed postoperatively for at least 6 months. In all but two cases, the orbital laxity improved. However, in the brow’s lateral third where the frontalis muscle does not exist, a slight lowering of the brow had occurred. The incision healed well without any keloid or hypertrophic scars. There were no significant complications such as superior orbital nerve entrapment-related sensory problems. Conclusions Subbrow lift utilizing the frontalis muscle attachment to the lower flap orbicularis muscle is a novel method of correcting upper eyelid skin hooding. The technique does not rely on periosteal fixation. Therefore, the eyebrow gliding plane is not violated. Thus, the natural eyebrow movement is maintained. There were no cases of injury to the deep branch of the supraorbital nerve, poor wound healing, or other significant complications. Level of Evidence IV This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266.
- Published
- 2020
- Full Text
- View/download PDF
50. The 2020 SGO Annual Meeting Report
- Author
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Rebecca C. Arend, Kenneth H. Kim, Shannon N. Westin, Kathleen N. Moore, and Jamie N. Bakkum-Gamez
- Subjects
medicine.medical_specialty ,Oncology ,business.industry ,Family medicine ,medicine ,Obstetrics and Gynecology ,business - Published
- 2020
- Full Text
- View/download PDF
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