2,331 results on '"Cheng, Jonathan"'
Search Results
2. Water dissociation on graphene/Ir(111) studied by temperature-dependent X-ray photoelectron spectroscopy
- Author
-
Bernal Romero, Juan, Chavez, Oscar, Rodriguez, Carlos, Gonzalez, Sebastian, Fregoso, Jael, Carbajal, Vanessa, Clavel, Graciela, Hudak, Owen, Cheng, Jonathan, Tandoc, Joshua, Brown, Jerome, and Gao, Li
- Published
- 2024
- Full Text
- View/download PDF
3. Development and Validation of Novel Free Vitamin D Equations: The Health Aging and Body Composition Study.
- Author
-
Cheng, Jonathan, Hoofnagle, Andrew, Katz, Ronit, Kritchevsky, Stephen, Shlipak, Michael, Sarnak, Mark, Ix, Joachim, and Ginsberg, Charles
- Subjects
FREE VITAMIN D ,MINERAL METABOLISM ,PTH/VIT D/FGF23 ,STATISTICAL METHODS ,VITAMIN D BINDING PROTEIN - Abstract
Vitamin D deficiency is prevalent in 25% of Americans. However, 25(OH)D may not be an accurate measure of vitamin D because the majority (85%-90%) of 25(OH)D is bound to vitamin D binding protein (VDBP), which varies by over 30% across individuals. Free 25(OH)D may be a better measure, but it is difficult to measure accurately and precisely. The existing free 25(OH)D estimating equation does not include VDBP phenotypes; therefore, new equations that include this variable may be more accurate. A total of 370 participants in the Health, Aging, and Body Composition Study, a cohort of healthy community-dwelling individuals aged 70-79 years old, underwent VDBP and vitamin D metabolite [25(OH)D, 24,25(OH)2D, 1,25(OH)2D, free 25(OH)D] measurements and were randomly allocated into equation development (two out of three) and internal validation (one out of three) groups. New equations were developed with multiple linear regression and were internally validated with Bland-Altman plots. The mean age was 75 ± 3 years, 53% were female, and the mean measured free 25(OH)D was 5.37 ± 1.81 pg/mL. Three equations were developed. The first equation included albumin, 25(OH)D3, 25(OH)D2, VDBP, 1,25(OH)2D3, and 24,25(OH)2D3. The second equation included all variables in Eq. (1) plus VDBP phenotypes. The third equation included albumin, 25(OH)D3, intact parathyroid hormone, and 1,25(OH)2D3. In internal validation, all three new equations predicted free 25(OH)D values within 30% and 15% of the measured free 25(OH)D concentrations in 76%-80% and 48%-52% of study participants, respectively. Equation (2) was the most precise, with a mean bias of 0.06 (95% limits of agreement -2.41 to 2.30) pg/mL. The existing equation estimated free 25(OH)D within 30% and 15% of measured free 25(OH)D in 43% and 22% of participants, respectively. Free 25(OH)D can be estimated with clinically available biomarkers as well as with more laboratory-intensive biomarkers with moderate precision. © 2023 The Authors. JBMR Plus published by Wiley Periodicals LLC on behalf of American Society for Bone and Mineral Research.
- Published
- 2023
4. Non-invasive neurally adjusted ventilatory assist (NIV-NAVA) in the neonatal intensive care unit (NICU): an Australian NICU experience
- Author
-
Cheng, Jonathan, Parmar, Trisha, Smyth, John, Bolisetty, Srivinas, Lui, Kei, and Schindler, Tim
- Published
- 2024
- Full Text
- View/download PDF
5. The Vitamin D Metabolite Ratio (VMR) is a Biomarker of Vitamin D Status That is Not Affected by Acute Changes in Vitamin D Binding Protein.
- Author
-
Dugar, Anushree, Hoofnagle, Andrew, Sanchez, Amber, Ward, David, Corey-Bloom, Jody, Cheng, Jonathan, Ix, Joachim, and Ginsberg, Charles
- Subjects
Humans ,Female ,Adult ,Middle Aged ,Aged ,Male ,Vitamin D-Binding Protein ,Vitamin D ,Biomarkers ,Plasmapheresis ,Plasma - Abstract
BACKGROUND: 25-hydroxyvitamin D[25(OH)D] may be a poor marker of vitamin D status due to variability in levels of vitamin D binding protein (VDBP). The vitamin D metabolite ratio (VMR) is the ratio of 24,25-dihydroxyvitamin D[24,25(OH)2D3] to 25(OH)D3 and has been postulated to reflect vitamin D sufficiency independent of variability in VDBP. Therapeutic plasma exchange (TPE) is a procedure that removes plasma, including VDBP, and may lower bound vitamin D metabolite concentrations. Effects of TPE on the VMR are unknown. METHODS: We measured 25(OH)D, free 25(OH)D, 1,25-dihydroxyvitamin D[1,25(OH)2D], 24,25(OH)2D3, and VDBP in persons undergoing TPE, before and after treatment. We used paired t-tests to assess changes in these biomarkers during a TPE procedure. RESULTS: Study participants (n = 45) had a mean age of 55 ± 16 years; 67% were female; and 76% were white. Compared to pretreatment concentrations, TPE caused a significant decrease in total VDBP by 65% (95%CI 60,70%), as well as all the vitamin D metabolites-25(OH)D by 66% (60%,74%), free 25(OH)D by 31% (24%,39%), 24,25(OH)2D3 by 66% (55%,78%) and 1,25(OH)2D by 68% (60%,76%). In contrast, there was no significant change in the VMR before and after a single TPE treatment, with an observed mean 7% (-3%, 17%) change in VMR. CONCLUSIONS: Changes in VDBP concentration across TPE parallel changes in 25(OH)D, 1,25(OH)2D, and 24,25(OH)2D3, suggesting that concentrations of these metabolites reflect underlying VDBP concentrations. The VMR is stable across a TPE session despite a 65% reduction in VDBP. These findings suggest that the VMR is a marker of vitamin D status independent of VDBP levels.
- Published
- 2023
6. Biomarkers predictive of response to pembrolizumab in head and neck cancer.
- Author
-
Pfister, David, Haddad, Robert, Worden, Francis, Weiss, Jared, Mehra, Ranee, Chow, Laura, Liu, Stephen, Kang, Hyunseok, Saba, Nabil, Wirth, Lori, Sukari, Ammar, Massarelli, Erminia, Ayers, Mark, Albright, Andrew, Webber, Andrea, Mogg, Robin, Lunceford, Jared, Huang, Lingkang, Cristescu, Razvan, Cheng, Jonathan, Seiwert, Tanguy, and Bauml, Joshua
- Subjects
biomarker ,head and neck squamous cell carcinoma ,immunotherapy ,pembrolizumab ,tumor microenvironment ,tumor mutational burden ,Humans ,B7-H1 Antigen ,Squamous Cell Carcinoma of Head and Neck ,Papillomavirus Infections ,Antineoplastic Agents ,Immunological ,Head and Neck Neoplasms ,Biomarkers ,Tumor - Abstract
BACKGROUND: We performed an integrated biomarker evaluation in pembrolizumab-treated patients with R/M HNSCC enrolled in KEYNOTE-012 or KEYNOTE-055. The relationship between biomarkers and HPV status was explored. METHODS: We evaluated PD-L1 (combined positive score [CPS]), TMB, T-cell-inflamed gene expression profile (Tcellinf GEP), and HPV status. Associations between biomarkers were evaluated by logistic regression (ORR) and Cox regression (PFS, OS). RESULTS: Two hundred and fifty-seven patients (KEYNOTE-012, n = 106; KEYNOTE-055, n = 151) had TMB data available; of these, 254 had PD-L1 and 236 had Tcellinf GEP. TMB, PD-L1, and Tcellinf GEP were each significantly associated with ORR (p
- Published
- 2023
7. Artificial Intelligence Enables Real-Time and Intuitive Control of Prostheses via Nerve Interface
- Author
-
Luu, Diu Khue, Nguyen, Anh Tuan, Jiang, Ming, Drealan, Markus W., Xu, Jian, Wu, Tong, Tam, Wing-kin, Zhao, Wenfeng, Lim, Brian Z. H., Overstreet, Cynthia K., Zhao, Qi, Cheng, Jonathan, Keefer, Edward W., and Yang, Zhi
- Subjects
Computer Science - Robotics ,Computer Science - Artificial Intelligence ,Computer Science - Human-Computer Interaction ,Computer Science - Machine Learning ,Quantitative Biology - Neurons and Cognition - Abstract
Objective: The next generation prosthetic hand that moves and feels like a real hand requires a robust neural interconnection between the human minds and machines. Methods: Here we present a neuroprosthetic system to demonstrate that principle by employing an artificial intelligence (AI) agent to translate the amputee's movement intent through a peripheral nerve interface. The AI agent is designed based on the recurrent neural network (RNN) and could simultaneously decode six degree-of-freedom (DOF) from multichannel nerve data in real-time. The decoder's performance is characterized in motor decoding experiments with three human amputees. Results: First, we show the AI agent enables amputees to intuitively control a prosthetic hand with individual finger and wrist movements up to 97-98% accuracy. Second, we demonstrate the AI agent's real-time performance by measuring the reaction time and information throughput in a hand gesture matching task. Third, we investigate the AI agent's long-term uses and show the decoder's robust predictive performance over a 16-month implant duration. Conclusion & significance: Our study demonstrates the potential of AI-enabled nerve technology, underling the next generation of dexterous and intuitive prosthetic hands.
- Published
- 2022
8. Sheffield Shield Cricketers Live Longer than the Age-Matched General Australian Male Population
- Author
-
Luies, Nathan, Orchard, Jessica J., Driscoll, Tim, Sahdra, Saaz Kaur, Cheng, Jonathan, Davis, Angus J., and Orchard, John W.
- Published
- 2023
- Full Text
- View/download PDF
9. Experimental pub crawl from Rayleigh–Bénard to magnetostrophic convection
- Author
-
Grannan, Alexander M, Cheng, Jonathan S, Aggarwal, Ashna, Hawkins, Emily K, Xu, Yufan, Horn, Susanne, Sánchez-Álvarez, Jose, and Aurnou, Jonathan M
- Subjects
Benard convection ,rotating flows ,magneto convection ,Mathematical Sciences ,Engineering ,Fluids & Plasmas - Abstract
The interplay between convective, rotational and magnetic forces defines the dynamics within the electrically conducting regions of planets and stars. Yet their triadic effects are separated from one another in most studies, arguably due to the richness of each subset. In a single laboratory experiment, we apply a fixed heat flux, two different magnetic field strengths and one rotation rate, allowing us to chart a continuous path through Rayleigh-Bénard convection (RBC), two regimes of magnetoconvection, rotating convection and two regimes of rotating magnetoconvection, before finishing back at RBC. Dynamically rapid transitions are determined to exist between jump rope vortex states, thermoelectrically driven magnetoprecessional modes, mixed wall- and oscillatory-mode rotating convection and a novel magnetostrophic wall mode. Thus, our laboratory 'pub crawl' provides a coherent intercomparison of the broadly varying responses arising as a function of the magnetorotational forces imposed on a liquid-metal convection system.
- Published
- 2022
10. Two-Year Optical Site Characterization for the Pacific Ocean Neutrino Experiment P-ONE in the Cascadia Basin
- Author
-
Bailly, Nicolai, Bedard, Jeannette, Böhmer, Michael, Bosma, Jeff, Brussow, Dirk, Cheng, Jonathan, Clark, Ken, Croteau, Beckey, Danninger, Matthias, De Leo, Fabio, Deis, Nathan, Ens, Matthew, Fox, Rowan, Fruck, Christian, Gärtner, Andreas, Gernhäuser, Roman, Ghuman, Dilraj, Grant, Darren, He, Helen, Henningsen, Felix, Holzapfel, Kilian, Hotte, Ryan, Jenkyns, Reyna, Johnson, Hamish, Katil, Akanksha, Kopper, Claudio, Krauss, Carsten B., Kulin, Ian, Leismüller, Klaus, Leys, Sally, Lin, Tony, Macoun, Paul, Man, Matthew, McElroy, Thomas, Meighen-Berger, Stephan, Michel, Jan, Moore, Roger, Morley, Mike, Papp, Laszlo, Pirenne, Benoit, Qiu, Tom, Rankin, Mark, Rea, Immacolata Carmen, Resconi, Elisa, Round, Adrian, Ruskey, Albert, Rutley, Ryan, Spannfellner, Christian, Stacho, Jakub, Timmerman, Ross, Tomlin, Meghan, Tradewell, Matt, Traxler, Michael, Uganecz, Matt, Wagner, Seann, Yañez, Juan Pablo, and Zheng, Yinsong
- Subjects
Astrophysics - Instrumentation and Methods for Astrophysics ,High Energy Physics - Experiment - Abstract
The STRings for Absorption length in Water (STRAW) are the first in a series of pathfinders for the Pacific Ocean Neutrino Experiment (P-ONE), a future large-scale neutrino telescope in the north-eastern Pacific Ocean. STRAW consists of two 150 m long mooring lines instrumented with optical emitters and detectors. The pathfinder is designed to measure the attenuation length of the water and perform a long-term assessment of the optical background at the future P-ONE site. After two years of continuous operation, measurements from STRAW show an optical attenuation length of about 28 metres at 450 nm. Additionally, the data allow a study of the ambient undersea background. The overall optical environment reported here is comparable to other deep-water neutrino telescopes and qualifies the site for the deployment of P-ONE., Comment: 11 pages, 13 figures
- Published
- 2021
- Full Text
- View/download PDF
11. Laboratory model of electrovortex flow with thermal gradients, for liquid metal batteries
- Author
-
Cheng, Jonathan S, Wang, Bitong, Mohammad, Ibrahim, Forer, Jarod M, and Kelley, Douglas H
- Subjects
Physics - Fluid Dynamics - Abstract
We present a novel laboratory setup for studying the fluid dynamics in liquid metal batteries (LMBs). LMBs are a promising technology suited for grid-scale energy storage, but flows remain a confounding factor in determining their viability. Two important drivers of flow are thermal gradients, caused by internal heating during operation, and electrovortex flow (EVF), induced by diverging current densities. Our setup explores thermal gradients and electrovortex flow separately and in combination in a cylindrical layer of liquid gallium, simulating the behavior in a single layer of an LMB. In this work, we discuss the design principles underlying our choices of materials, thermal control, and current control. We also detail our diagnostic tools - thermocouple measurements for temperature and Ultrasonic Doppler Velocimetry (UDV) probes for velocities - and the design principles which go into choosing their placement on the setup. We also include a discussion of our post-processing tools for quantifying and visualizing the flow. Finally, we validate convection and EVF in our setup: we show that scaling relationships between the nondimensional parameters produced by our data agree well with theory and previous studies., Comment: 13 pages, 9 figures
- Published
- 2021
- Full Text
- View/download PDF
12. Influence of tumor mutational burden, inflammatory gene expression profile, and PD-L1 expression on response to pembrolizumab in head and neck squamous cell carcinoma
- Author
-
Haddad, Robert I, Seiwert, Tanguy Y, Chow, Laura QM, Gupta, Shilpa, Weiss, Jared, Gluck, Iris, Eder, Joseph P, Burtness, Barbara, Tahara, Makoto, Keam, Bhumsuk, Kang, Hyunseok, Muro, Kei, Albright, Andrew, Mogg, Robin, Ayers, Mark, Huang, Lingkang, Lunceford, Jared, Cristescu, Razvan, Cheng, Jonathan, and Mehra, Ranee
- Subjects
Biomedical and Clinical Sciences ,Clinical Sciences ,Oncology and Carcinogenesis ,Immunology ,Dental/Oral and Craniofacial Disease ,Sexually Transmitted Infections ,Cancer ,Clinical Research ,Good Health and Well Being ,Antibodies ,Monoclonal ,Humanized ,Antineoplastic Agents ,Immunological ,B7-H1 Antigen ,Female ,Head and Neck Neoplasms ,Humans ,Immunotherapy ,Male ,Squamous Cell Carcinoma of Head and Neck ,Transcriptome ,Tumor Burden ,gene expression profiling ,head and neck neoplasms ,immunotherapy ,programmed cell death 1 receptor ,tumor biomarkers ,Oncology and carcinogenesis - Abstract
To characterize genomic determinants of response to pembrolizumab in recurrent/metastatic (R/M) head and neck squamous cell carcinoma (HNSCC) in the KEYNOTE-012 study. Associations between biomarkers (tumor mutational burden (TMB), neoantigen load (NL), 18-gene T-cell-inflamed gene expression profile (TcellinfGEP), and PD-L1 combined positive score (CPS)) and clinical outcomes with pembrolizumab were assessed in patients with R/M HNSCC (n=192). Tumor human papillomavirus (HPV) status was also evaluated with the use of p16 immunohistochemistry and whole exome sequencing (WES; HPV+, mapping >20 HPV reads) in pretreatment tumor samples (n=106). TMB, clonality-weighted TMB, and TcellinfGEP were significantly associated with objective response (p=0.0276, p=0.0201, and p=0.006, respectively), and a positive trend was observed between NL and PD-L1 CPS and clinical response (p=0.0550 and p=0.0682, respectively). No correlation was observed between TMB and TcellinfGEP (Spearman ρ=-0.026) or TMB and PD-L1 (Spearman ρ=0.009); a correlation was observed between TcellinfGEP and PD-L1 (Spearman ρ=0.511). HPV status by WES and p16 immunohistochemistry showed concordance (84% ҡ=0.573) among patients whose HPV results were available using both methods. TMB and inflammatory biomarkers (TcellinfGEP and PD-L1) may represent distinct and complementary biomarkers predicting response to anti-programmed death 1 therapies in HNSCC; further study of these relationships in randomized clinical trials is needed. NCT01848834.
- Published
- 2022
13. A Portable, Self-Contained Neuroprosthetic Hand with Deep Learning-Based Finger Control
- Author
-
Nguyen, Anh Tuan, Drealan, Markus W., Luu, Diu Khue, Jiang, Ming, Xu, Jian, Cheng, Jonathan, Zhao, Qi, Keefer, Edward W., and Yang, Zhi
- Subjects
Computer Science - Robotics ,Computer Science - Artificial Intelligence ,Computer Science - Human-Computer Interaction - Abstract
Objective: Deep learning-based neural decoders have emerged as the prominent approach to enable dexterous and intuitive control of neuroprosthetic hands. Yet few studies have materialized the use of deep learning in clinical settings due to its high computational requirements. Methods: Recent advancements of edge computing devices bring the potential to alleviate this problem. Here we present the implementation of a neuroprosthetic hand with embedded deep learning-based control. The neural decoder is designed based on the recurrent neural network (RNN) architecture and deployed on the NVIDIA Jetson Nano - a compacted yet powerful edge computing platform for deep learning inference. This enables the implementation of the neuroprosthetic hand as a portable and self-contained unit with real-time control of individual finger movements. Results: The proposed system is evaluated on a transradial amputee using peripheral nerve signals (ENG) with implanted intrafascicular microelectrodes. The experiment results demonstrate the system's capabilities of providing robust, high-accuracy (95-99%) and low-latency (50-120 msec) control of individual finger movements in various laboratory and real-world environments. Conclusion: Modern edge computing platforms enable the effective use of deep learning-based neural decoders for neuroprosthesis control as an autonomous system. Significance: This work helps pioneer the deployment of deep neural networks in clinical applications underlying a new class of wearable biomedical devices with embedded artificial intelligence.
- Published
- 2021
- Full Text
- View/download PDF
14. Frictional boundary layer effect on vortex condensation in rotating turbulent convection
- Author
-
Guzmán, Andrés J. Aguirre, Madonia, Matteo, Cheng, Jonathan S., Ostilla-Mónico, Rodolfo, Clercx, Herman J. H., and Kunnen, Rudie P. J.
- Subjects
Physics - Fluid Dynamics - Abstract
We perform direct numerical simulations of rotating Rayleigh--B\'enard convection of fluids with low ($Pr=0.1$) and high ($Pr=5$) Prandtl numbers in a horizontally periodic layer with no-slip top and bottom boundaries. At both Prandtl numbers, we demonstrate the presence of an upscale transfer of kinetic energy that leads to the development of domain-filling vortical structures. Sufficiently strong buoyant forcing and rotation foster the quasi-two-dimensional turbulent state of the flow, despite the formation of plume-like vertical disturbances promoted by so-called Ekman pumping from the viscous boundary layer., Comment: 12 pages, 4 figures
- Published
- 2020
- Full Text
- View/download PDF
15. Turbulent rotating convection confined in a slender cylinder: the sidewall circulation
- Author
-
de Wit, Xander M., Guzmán, Andrés J. Aguirre, Madonia, Matteo, Cheng, Jonathan S., Clercx, Herman J. H., and Kunnen, Rudie P. J.
- Subjects
Physics - Fluid Dynamics - Abstract
Recent studies of rotating Rayleigh-B\'enard convection at high rotation rates and strong thermal forcing have shown a significant discrepancy in total heat transport between experiments on a confined cylindrical domain on the one hand and simulations on a laterally unconfined periodic domain on the other. This paper addresses this discrepancy using direct numerical simulations on a cylindrical domain. An analysis of the flow field reveals a region of enhanced convection near the wall, the sidewall circulation. The sidewall circulation rotates slowly within the cylinder in anticyclonic direction. It has a convoluted structure, illustrated by mean flow fields in horizontal cross-sections of the flow where instantaneous snapshots are compensated for the orientation of the sidewall circulation before averaging. Through separate analysis of the sidewall region and the inner bulk flow, we find that for higher values of the thermal forcing the heat transport in the inner part of the cylindrical domain, outside the sidewall circulation region, coincides with the heat transport on the unconfined periodic domain. Thus the sidewall circulation accounts for the differences in heat transfer between the two considered domains, while in the bulk the turbulent heat flux is the same as that of a laterally unbounded periodic domain. Therefore, experiments, with their inherent confinement, can still provide turbulence akin to the unbounded domains of simulations, and at more extreme values of the governing parameters for thermal forcing and rotation. We also provide experimental evidence for the existence of the sidewall circulation that is in close agreement with the simulation results., Comment: 11 pages, 7 figures
- Published
- 2019
- Full Text
- View/download PDF
16. Laboratory Exploration of Heat Transfer Regimes in Rapidly Rotating Turbulent Convection
- Author
-
Cheng, Jonathan S., Madonia, Matteo, Guzmán, Andrés J. Aguirre, and Kunnen, Rudie P. J.
- Subjects
Physics - Fluid Dynamics - Abstract
We report heat transfer and temperature profile measurements in laboratory experiments of rapidly rotating convection in water under intense thermal forcing (Rayleigh number $Ra$ as high as $\sim 10^{13}$) and unprecedentedly strong rotational influence (Ekman numbers $E$ as low as $10^{-8}$). Measurements of the mid-height vertical temperature gradient connect quantitatively to predictions from numerical models of asymptotically rapidly rotating convection, separating various flow phenomenologies. Past the limit of validity of the asymptotically-reduced models, we find novel behaviors in a regime we refer to as rotationally-influenced turbulence, where rotation is important but not as dominant as in the known geostrophic turbulence regime. The temperature gradients collapse to a Rayleigh-number scaling as $Ra^{-0.2}$ in this new regime. It is bounded from above by a critical convective Rossby number $Ro^*=0.06$ independent of domain aspect ratio $\Gamma$, clearly distinguishing it from well-studied rotation-affected convection., Comment: 14 pages, 7 figures
- Published
- 2019
- Full Text
- View/download PDF
17. The Vitamin D Metabolite Ratio and Incident Cardiovascular Disease: The Multi-Ethnic Study of Atherosclerosis
- Author
-
Cheng, Jonathan Hin
- Subjects
Epidemiology ,cardiovascular death ,cardiovascular disease ,Heart failure ,Multi-Ethnic Study of Atherosclerosis (MESA) ,vitamin D ,vitamin D metabolite ratio - Abstract
Investigations into the link between vitamin D and cardiovascular disease (CVD) have yielded inconsistent results. The vitamin D metabolite ratio (VMR), the ratio of 24,25(OH)2D to 25(OH)D, has shown stronger associations with fracture and mortality than 25(OH)D alone. Our study assessed the association between the VMR and CVD outcomes. We evaluated a cohort of 6,313 participants from the Multi-Ethnic Study of Atherosclerosis (MESA), without pre-existing CVD, over 15 years. Utilizing Cox regression, we examined the associations of both the VMR and 25-hydroxyvitamin D [25(OH)D] with various cardiovascular events. Over the study, 800 participants developed CVD, including conditions such as myocardial infarction, resuscitated cardiac arrest, stroke, coronary heart disease death, and stroke death. Heart failure (HF) was observed in 398 participants, and 413 experienced cardiovascular mortality. Models were adjusted for factors including demographics, lifestyle, clinical conditions and medications, biomarkers, and kidney function. Participants averaged 62 years (range 44-84), with 53% females. The mean (SD) 25(OH)D level was 22.7 (11.0) ng/mL, and the mean VMR was 15.2 (5.0). In fully adjusted models, a two-fold increase in VMR was associated with a 24% reduction in incident CVD (HR: 0.76, 95% CI: 0.65-0.88). However, there was no association between the VMR and HF (0.98, 0.78-1.24), or cardiovascular mortality (0.96, 0.77-1.21). 25(OH)D was not significantly associated with any CVD outcome. In a diverse cohort, VMR was significantly associated with reduced incident CVD, but not HF or cardiovascular mortality. The results suggest that VMR may provide greater insight into vitamin D metabolism, compared with 25(OH)D alone.
- Published
- 2024
18. Quality of Life With Pembrolizumab for Recurrent and/or Metastatic Head and Neck Squamous Cell Carcinoma: KEYNOTE-040.
- Author
-
Harrington, Kevin J, Soulières, Denis, Le Tourneau, Christophe, Dinis, Jose, Licitra, Lisa F, Ahn, Myung-Ju, Soria, Ainara, Machiels, Jean-Pascal H, Mach, Nicolas, Mehra, Ranee, Burtness, Barbara, Ellison, Misoo C, Cheng, Jonathan D, Chirovsky, Diana Romana, Swaby, Ramona F, and Cohen, Ezra EW
- Subjects
Clinical Research ,Rare Diseases ,Cancer ,Dental/Oral and Craniofacial Disease ,Good Health and Well Being ,Adult ,Aged ,Aged ,80 and over ,Antibodies ,Monoclonal ,Humanized ,Antineoplastic Combined Chemotherapy Protocols ,Cetuximab ,Disease-Free Survival ,Docetaxel ,Humans ,Male ,Middle Aged ,Neoplasm Metastasis ,Neoplasm Recurrence ,Local ,Patient Reported Outcome Measures ,Quality of Life ,Squamous Cell Carcinoma of Head and Neck ,Oncology and Carcinogenesis ,Oncology & Carcinogenesis - Abstract
BackgroundHead and neck squamous cell carcinoma (HNSCC) affects health-related quality of life (HRQoL); few treatments have demonstrated clinically meaningful HRQoL benefit. KEYNOTE-040 evaluated pembrolizumab vs standard of care (SOC) in patients with recurrent and/or metastatic HNSCC whose disease recurred or progressed after platinum-containing regimen.MethodsPatients received pembrolizumab 200 mg or SOC (methotrexate, docetaxel, or cetuximab). Exploratory HRQoL analyses used European Organisation for Research and Treatment of Cancer (EORTC) 30 quality-of-life, EORTC 35-question quality-of-life head and neck cancer-specific module, and EuroQoL 5-dimensions questionnaires.ResultsThe HRQoL population comprised 469 patients (pembrolizumab = 241, SOC = 228). HRQoL compliance for patients in the study at week 15 was 75.3% (116 of 154) for pembrolizumab and 74.6% (85 of 114) for SOC. The median time to deterioration in global health status (GHS) and QoL scores were 4.8 months with pembrolizumab and 2.8 months with SOC (hazard ratio = 0.79, 95% confidence interval [CI] = 0.59 to 1.05). At week 15, GHS / QoL scores were stable for pembrolizumab (least squares mean [LSM] = 0.39, 95% CI = -3.00 to 3.78) but worsened for SOC (LSM = -5.86, 95% CI = -9.68 to -2.04); the LSM between-group difference was 6.25 points (95% CI = 1.32 to 11.18; nominal 2-sided P = .01). A greater difference in the LSM for GHS / QoL score occurred with pembrolizumab vs docetaxel (10.23, 95% CI = 3.15 to 17.30) compared with pembrolizumab vs methotrexate (6.21, 95% CI = -4.57 to 16.99) or pembrolizumab vs cetuximab (-1.44, 95% CI = -11.43 to 8.56). Pembrolizumab-treated patients had stable functioning and symptoms at week 15, with no notable differences from SOC.ConclusionsGHS / QoL scores were stable with pembrolizumab but declined with SOC in patients at week 15, supporting the clinically meaningful benefit of pembrolizumab in recurrent and/or metastatic HNSCC.
- Published
- 2021
19. Tendon Transfers to Improve Grip and Pinch in Patients with Sporadic Inclusion Body Myositis
- Author
-
Hua, Catherine, Bhai, Salman, Cheng, Jonathan, Hinojosa, Jose, Wilson, Lynn, Lubinus, Manuel, and Bhashyam, Abhiram R.
- Published
- 2023
- Full Text
- View/download PDF
20. Prospective pre-operative 3-T MR neurography peripheral nerve mapping of upper extremity amputations implanted with FAST-LIFE electrode interfaces of robotic hands: technical report
- Author
-
Mogharrabi, Bayan, Cheng, Jonathan, Ratakonda, Raghu, Keefer, Edward, and Chhabra, Avneesh
- Published
- 2022
- Full Text
- View/download PDF
21. Green solvent for lignocellulosic biomass pretreatment: An overview of the performance of low transition temperature mixtures for enhanced bio-conversion
- Author
-
Wong, Jung Lin, Khadaroo, Sabeeha Nushrat Bibi Aisha, Cheng, Jonathan Lin Yang, Chew, Jiuan Jing, Khaerudini, Deni Shidqi, and Sunarso, Jaka
- Published
- 2023
- Full Text
- View/download PDF
22. CanSat UCI: Winter Design Review 2019
- Author
-
Soroka, Emiko, Huynh, Amy, Hylak, Joseph, Browne, Owen, Madrigal, Edwin, Cheng, Jonathan, Shah, Partha, Parel, Ryan, Movsesyan, Alex, and Zhao, Andrew
- Subjects
Aerospace Engineering ,Auto-Gyro ,CanSat Competition ,CanSat ,Mechanical Engineering ,Senior Design ,Computer Science ,Propeller ,Model Rocket ,Rocketry ,Mission Operations ,Payload ,Engineering Design ,Ground Station ,Descent Control ,Telemetry ,Data Transmission ,Launch ,Sensors ,Communications ,PDR ,CDR ,Design Cycle ,Texas ,Autonomous Operations ,UCI Dean's Choice Award 2019 - Abstract
The CanSat Competition is an international design/build/fly engineering competition held yearly in Stephenville, Texas and provides students with an opportunity to design an aerospace system. It is designed to reflect a small-scale aerospace program and includes the project design life cycle from preliminary design review to post mission review. Teams of up to 10 undergraduate students build CanSats, which must complete a mission that changes every year. In this year’s mission, the CanSat will be launched to 700 meters using a high-powered model rocket, and must perform a controlled descent while transmitting data from its onboard sensors to a ground station computer. The CanSat consists of a container that must protect the science payload from damage during the launch and deployment. Initially, both descend under a parachute. At 400 meters, the payload is released and continues its descent using an autogyro propeller. The CanSat must be equipped with sensors for environmental conditions (temperature, pressure, GPS position, altitude) and system performance (orientation, battery voltage, auto-gyro spin rate). It must be capable of transmitting this data in real-time to a ground station computer. The scope of our project is designing and building the CanSat and ground station. The launch system (a high-power model rocket) is provided by the competition organizers to standardize launches. Our team represents UC Irvine in this international competition. Members of CanSat UCI will follow the engineering design process from concept generation through integration and test, actual operation of the system, and the concluding post-mission summary and debrief. This year’s objective is to build a probe (the CanSat) that transmits environmental data to a ground station and performs a controlled descent using a parachute and auto-gyro propeller. The mission and its requirements reflect aspects of real world missions, including telemetry requirements, communications, and autonomous operations. Our project deliverables are the Preliminary Design Review and Critical Design Review presentations, the CanSat and ground station hardware, and the post-mission review. We follow a yearly design cycle, adhering to deadlines and requirements imposed by the competition. This ensures all teammates gain experience with the full engineering design process.Faculty Advisor: Professor RangelEmail: cansatuci@gmail.comWebsite: https://sites.google.com/a/uci.edu/cansat/
- Published
- 2019
23. Pembrolizumab for the Treatment of Advanced Salivary Gland Carcinoma
- Author
-
Cohen, Roger B, Delord, Jean-Pierre, Doi, Toshihiko, Piha-Paul, Sarina A, Liu, Stephen V, Gilbert, Jill, Algazi, Alain P, Damian, Silvia, Hong, Ruey-Long, Le Tourneau, Christophe, Day, Daphne, Varga, Andrea, Elez, Elena, Wallmark, John, Saraf, Sanatan, Thanigaimani, Pradeep, Cheng, Jonathan, and Keam, Bhumsuk
- Subjects
Biomedical and Clinical Sciences ,Clinical Sciences ,Oncology and Carcinogenesis ,Immunology ,Clinical Research ,Cancer ,Clinical Trials and Supportive Activities ,6.1 Pharmaceuticals ,Evaluation of treatments and therapeutic interventions ,6.2 Cellular and gene therapies ,salivary gland cancer ,immunotherapy ,pembrolizumab ,anti-PD-1 ,Dentistry ,Oncology & Carcinogenesis ,Oncology and carcinogenesis - Abstract
ObjectivesTreatment options for patients with unresectable or metastatic salivary gland carcinoma (SGC) are limited. Safety and efficacy of pembrolizumab for SGC expressing programmed death ligand 1 (PD-L1) were explored.Materials and methodsA cohort of patients with advanced, PD-L1-positive SGC was enrolled in the nonrandomized, multicohort, phase Ib trial of pembrolizumab in patients with PD-L1-positive advanced solid tumors (KEYNOTE-028; NCT02054806). Key inclusion criteria included recurrent or metastatic disease, failure of prior systemic therapy, and PD-L1 expression on ≥1% of tumor or stroma cells (per a prototype immunohistochemistry assay). Patients received pembrolizumab 10 mg/kg every 2 weeks for ≥2 years or until confirmed disease progression or unacceptable toxicity. Primary end point was objective response rate per Response Evaluation Criteria in Solid Tumors version 1.1 by investigator review.ResultsTwenty-six patients with PD-L1-positive SGC were enrolled and treated; median age was 57 years, 88% were men, and 74% had received prior therapy for recurrent/metastatic disease. Confirmed objective response rate after median follow-up of 20 months was 12% (95% confidence interval, 2%-30%), with 3 patients achieving partial response; there were no complete responses. Median duration of response was 4 months (range, 4 to 21 mo). Treatment-related adverse events occurred in 22 patients (85%), resulting in discontinuation in 2 patients and death in 1 (interstitial lung disease); those occurring in ≥15% of patients were diarrhea, decreased appetite, pruritus, and fatigue.ConclusionsPembrolizumab demonstrated promising antitumor activity and a manageable safety profile in patients with advanced, PD-L1-positive SGC.
- Published
- 2018
24. A Heuristic Framework for Next-Generation Models of Geostrophic Convective Turbulence
- Author
-
Cheng, Jonathan S, Aurnou, Jonathan M, Julien, Keith, and Kunnen, Rudie P J
- Subjects
Physics - Fluid Dynamics - Abstract
Many geophysical and astrophysical phenomena are driven by turbulent fluid dynamics, containing behaviors separated by tens of orders of magnitude in scale. While direct simulations have made large strides toward understanding geophysical systems, such models still inhabit modest ranges of the governing parameters that are difficult to extrapolate to planetary settings. The canonical problem of rotating Rayleigh-B\'enard convection provides an alternate approach - isolating the fundamental physics in a reduced setting. Theoretical studies and asymptotically-reduced simulations in rotating convection have unveiled a variety of flow behaviors likely relevant to natural systems, but still inaccessible to direct simulation. In lieu of this, several new large-scale rotating convection devices have been designed to characterize such behaviors. It is essential to predict how this potential influx of new data will mesh with existing results. Surprisingly, a coherent framework of predictions for extreme rotating convection has not yet been elucidated. In this study, we combine asymptotic predictions, laboratory and numerical results, and experimental constraints to build a heuristic framework for cross-comparison between a broad range of rotating convection studies. We categorize the diverse field of existing predictions in the context of asymptotic flow regimes. We then consider the physical constraints that determine the points of intersection between flow behavior predictions and experimental accessibility. Applying this framework to several upcoming devices demonstrates that laboratory studies may soon be able to characterize geophysically-relevant flow regimes. These new data may transform our understanding of geophysical and astrophysical turbulence, and the conceptual framework developed herein should provide the theoretical infrastructure needed for meaningful discussion of these results., Comment: 36 pages, 8 figures. CHANGES: in revision at Geophysical and Astrophysical Fluid Dynamics
- Published
- 2017
- Full Text
- View/download PDF
25. Pan-tumor genomic biomarkers for PD-1 checkpoint blockade–based immunotherapy
- Author
-
Cristescu, Razvan, Mogg, Robin, Ayers, Mark, Albright, Andrew, Murphy, Erin, Yearley, Jennifer, Sher, Xinwei, Liu, Xiao Qiao, Lu, Hongchao, Nebozhyn, Michael, Zhang, Chunsheng, Lunceford, Jared K, Joe, Andrew, Cheng, Jonathan, Webber, Andrea L, Ibrahim, Nageatte, Plimack, Elizabeth R, Ott, Patrick A, Seiwert, Tanguy Y, Ribas, Antoni, McClanahan, Terrill K, Tomassini, Joanne E, Loboda, Andrey, and Kaufman, David
- Subjects
Vaccine Related ,Cancer ,Human Genome ,Genetics ,Immunization ,4.1 Discovery and preclinical testing of markers and technologies ,4.2 Evaluation of markers and technologies ,Detection ,screening and diagnosis ,Good Health and Well Being ,Antibodies ,Monoclonal ,Humanized ,Antineoplastic Agents ,Immunological ,Biomarkers ,Tumor ,Cell Cycle Checkpoints ,Genetic Markers ,Humans ,Immunotherapy ,Inflammation ,Molecular Targeted Therapy ,Mutation ,Neoplasms ,Programmed Cell Death 1 Receptor ,T-Lymphocytes ,Transcriptome ,Tumor Burden ,General Science & Technology - Abstract
Programmed cell death protein-1 (PD-1) and programmed cell death ligand-1 (PD-L1) checkpoint blockade immunotherapy elicits durable antitumor effects in multiple cancers, yet not all patients respond. We report the evaluation of >300 patient samples across 22 tumor types from four KEYNOTE clinical trials. Tumor mutational burden (TMB) and a T cell-inflamed gene expression profile (GEP) exhibited joint predictive utility in identifying responders and nonresponders to the PD-1 antibody pembrolizumab. TMB and GEP were independently predictive of response and demonstrated low correlation, suggesting that they capture distinct features of neoantigenicity and T cell activation. Analysis of The Cancer Genome Atlas database showed TMB and GEP to have a low correlation, and analysis by joint stratification revealed biomarker-defined patterns of targetable-resistance biology. These biomarkers may have utility in clinical trial design by guiding rational selection of anti-PD-1 monotherapy and combination immunotherapy regimens.
- Published
- 2018
26. A heuristic framework for next-generation models of geostrophic convective turbulence
- Author
-
Cheng, Jonathan S, Aurnou, Jonathan M, Julien, Keith, and Kunnen, Rudie PJ
- Subjects
Rotating flows ,turbulent convective heat transfer ,experimental methods ,geophysical fluid dynamics ,physics.flu-dyn ,Fluids & Plasmas - Abstract
Many geophysical and astrophysical phenomena are driven by turbulent fluiddynamics, containing behaviors separated by tens of orders of magnitude inscale. While direct simulations have made large strides toward understandinggeophysical systems, such models still inhabit modest ranges of the governingparameters that are difficult to extrapolate to planetary settings. Thecanonical problem of rotating Rayleigh-B\'enard convection provides analternate approach - isolating the fundamental physics in a reduced setting.Theoretical studies and asymptotically-reduced simulations in rotatingconvection have unveiled a variety of flow behaviors likely relevant to naturalsystems, but still inaccessible to direct simulation. In lieu of this, severalnew large-scale rotating convection devices have been designed to characterizesuch behaviors. It is essential to predict how this potential influx of newdata will mesh with existing results. Surprisingly, a coherent framework ofpredictions for extreme rotating convection has not yet been elucidated. Inthis study, we combine asymptotic predictions, laboratory and numericalresults, and experimental constraints to build a heuristic framework forcross-comparison between a broad range of rotating convection studies. Wecategorize the diverse field of existing predictions in the context ofasymptotic flow regimes. We then consider the physical constraints thatdetermine the points of intersection between flow behavior predictions andexperimental accessibility. Applying this framework to several upcoming devicesdemonstrates that laboratory studies may soon be able to characterizegeophysically-relevant flow regimes. These new data may transform ourunderstanding of geophysical and astrophysical turbulence, and the conceptualframework developed herein should provide the theoretical infrastructure neededfor meaningful discussion of these results.
- Published
- 2018
27. Characterisation and thermal analysis of lignin extracted from empty fruit bunches using malic acid-sucrose-water low transition temperature mixture.
- Author
-
Cheng, Jonathan Lin Yang, Lim, Adeline, Wong, Jung Lin, Chew, Jiuan Jing, Yeu, Yee Lee, Khaerudini, Deni Shidqi, and Sunarso, Jaka
- Subjects
- *
LIGNINS , *TRANSITION temperature , *THERMAL analysis , *LOW temperatures , *WHEAT straw , *MIXTURES , *FRUIT - Abstract
Polysaccharides fraction (cellulose and hemicellulose) of biomass is well-received in the market as a source for fermentable sugar, while lignin is typically treated as waste and discarded. Lignin, the second most abundant biopolymer, has enormous potential as a feedstock for thermochemical applications. The potential of lignin as a feedstock for the thermochemical process is determined by the accurate characterisation of feedstock and its thermal decomposition behaviour. This work considers the extraction of lignin from EFB using a green solvent, MASW-LTTM and presents a detailed characterisation and thermal analyses of the extracted EFB lignin. Results show the promising capacity of MASW-LTTM to harvest high-purity EFB lignin with a purity of up to 88.26 %. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
28. Peripheral Nerve Compression and Pain
- Author
-
Lies, Shelby R., Kao, Dennis, Cheng, Jonathan, and Noe, Carl Edward, editor
- Published
- 2020
- Full Text
- View/download PDF
29. IFN-γ–related mRNA profile predicts clinical response to PD-1 blockade
- Author
-
Ayers, Mark, Lunceford, Jared, Nebozhyn, Michael, Murphy, Erin, Loboda, Andrey, Kaufman, David R, Albright, Andrew, Cheng, Jonathan D, Kang, S Peter, Shankaran, Veena, Piha-Paul, Sarina A, Yearley, Jennifer, Seiwert, Tanguy Y, Ribas, Antoni, and McClanahan, Terrill K
- Subjects
Genetics ,Cancer ,Clinical Research ,Aetiology ,2.1 Biological and endogenous factors ,Antibodies ,Monoclonal ,Humanized ,Antineoplastic Agents ,B7-H1 Antigen ,Biopsy ,Carcinoma ,Carcinoma ,Non-Small-Cell Lung ,Gene Expression Profiling ,Gene Expression Regulation ,Neoplastic ,Humans ,Immune System ,Immunohistochemistry ,Interferon-gamma ,Lung Neoplasms ,Melanoma ,Pilot Projects ,Programmed Cell Death 1 Receptor ,ROC Curve ,Sequence Analysis ,RNA ,Signal Transduction ,Skin Neoplasms ,Stomach Neoplasms ,Treatment Outcome ,Tumor Microenvironment ,Medical and Health Sciences ,Immunology - Abstract
Programmed death-1-directed (PD-1-directed) immune checkpoint blockade results in durable antitumor activity in many advanced malignancies. Recent studies suggest that IFN-γ is a critical driver of programmed death ligand-1 (PD-L1) expression in cancer and host cells, and baseline intratumoral T cell infiltration may improve response likelihood to anti-PD-1 therapies, including pembrolizumab. However, whether quantifying T cell-inflamed microenvironment is a useful pan-tumor determinant of PD-1-directed therapy response has not been rigorously evaluated. Here, we analyzed gene expression profiles (GEPs) using RNA from baseline tumor samples of pembrolizumab-treated patients. We identified immune-related signatures correlating with clinical benefit using a learn-and-confirm paradigm based on data from different clinical studies of pembrolizumab, starting with a small pilot of 19 melanoma patients and eventually defining a pan-tumor T cell-inflamed GEP in 220 patients with 9 cancers. Predictive value was independently confirmed and compared with that of PD-L1 immunohistochemistry in 96 patients with head and neck squamous cell carcinoma. The T cell-inflamed GEP contained IFN-γ-responsive genes related to antigen presentation, chemokine expression, cytotoxic activity, and adaptive immune resistance, and these features were necessary, but not always sufficient, for clinical benefit. The T cell-inflamed GEP has been developed into a clinical-grade assay that is currently being evaluated in ongoing pembrolizumab trials.
- Published
- 2017
30. Pembrolizumab for Platinum- and Cetuximab-Refractory Head and Neck Cancer: Results From a Single-Arm, Phase II Study
- Author
-
Bauml, Joshua, Seiwert, Tanguy Y, Pfister, David G, Worden, Francis, Liu, Stephen V, Gilbert, Jill, Saba, Nabil F, Weiss, Jared, Wirth, Lori, Sukari, Ammar, Kang, Hyunseok, Gibson, Michael K, Massarelli, Erminia, Powell, Steven, Meister, Amy, Shu, Xinxin, Cheng, Jonathan D, and Haddad, Robert
- Subjects
Clinical Research ,Rare Diseases ,Sexually Transmitted Infections ,Dental/Oral and Craniofacial Disease ,Cancer ,Infectious Diseases ,Evaluation of treatments and therapeutic interventions ,6.1 Pharmaceuticals ,6.2 Cellular and gene therapies ,Adult ,Aged ,Aged ,80 and over ,Antibodies ,Monoclonal ,Humanized ,Antineoplastic Agents ,B7-H1 Antigen ,Carcinoma ,Squamous Cell ,Cetuximab ,Disease Progression ,Disease-Free Survival ,Female ,Head and Neck Neoplasms ,Humans ,Male ,Middle Aged ,Neoplasm Recurrence ,Local ,Papillomavirus Infections ,Platinum Compounds ,Response Evaluation Criteria in Solid Tumors ,Retreatment ,Survival Rate ,Clinical Sciences ,Oncology and Carcinogenesis ,Oncology & Carcinogenesis - Abstract
Purpose There are no approved treatments for recurrent/metastatic head and neck squamous cell carcinoma refractory to platinum and cetuximab. In the single-arm, phase II KEYNOTE-055 study, we evaluated pembrolizumab, an anti-programmed death 1 receptor antibody, in this platinum- and cetuximab-pretreated population with poor prognosis. Methods Eligibility stipulated disease progression within 6 months of platinum and cetuximab treatment. Patients received pembrolizumab 200 mg every 3 weeks. Imaging was performed every 6 to 9 weeks. Primary end points: overall response rate (Response Evaluation Criteria in Solid Tumors v1.1, central review) and safety. Efficacy was assessed in all dosed patients and in subgroups on the basis of programmed death ligand 1 (PD-L1) expression and human papillomavirus (HPV) status. Results Among 171 patients treated, 75% received two or more prior lines of therapy for metastatic disease, 82% were PD-L1 positive, and 22% were HPV positive. At the time of analysis, 109 patients (64%) experienced a treatment-related adverse event; 26 patients (15%) experienced a grade ≥ 3 event. Seven patients (4%) discontinued treatment, and one died of treatment-related adverse events. Overall response rate was 16% (95% CI, 11% to 23%), with a median duration of response of 8 months (range, 2+ to 12+ months); 75% of responses were ongoing at the time of analysis. Response rates were similar in all HPV and PD-L1 subgroups. Median progression-free survival was 2.1 months, and median overall survival was 8 months. Conclusion Pembrolizumab exhibited clinically meaningful antitumor activity and an acceptable safety profile in recurrent/metastatic head and neck squamous cell carcinoma previously treated with platinum and cetuximab.
- Published
- 2017
31. Antitumor Activity of Pembrolizumab in Biomarker-Unselected Patients With Recurrent and/or Metastatic Head and Neck Squamous Cell Carcinoma: Results From the Phase Ib KEYNOTE-012 Expansion Cohort
- Author
-
Chow, Laura QM, Haddad, Robert, Gupta, Shilpa, Mahipal, Amit, Mehra, Ranee, Tahara, Makoto, Berger, Raanan, Eder, Joseph Paul, Burtness, Barbara, Lee, Se-Hoon, Keam, Bhumsuk, Kang, Hyunseok, Muro, Kei, Weiss, Jared, Geva, Ravit, Lin, Chia-Chi, Chung, Hyun Cheol, Meister, Amy, Dolled-Filhart, Marisa, Pathiraja, Kumudu, Cheng, Jonathan D, and Seiwert, Tanguy Y
- Subjects
Clinical Research ,Cancer ,Dental/Oral and Craniofacial Disease ,Rare Diseases ,Clinical Trials and Supportive Activities ,Evaluation of treatments and therapeutic interventions ,6.2 Cellular and gene therapies ,6.1 Pharmaceuticals ,Adult ,Aged ,Aged ,80 and over ,Antibodies ,Monoclonal ,Humanized ,Antineoplastic Agents ,Immunological ,B7-H1 Antigen ,Carcinoma ,Squamous Cell ,Cohort Studies ,Female ,Head and Neck Neoplasms ,Humans ,Male ,Middle Aged ,Neoplasm Metastasis ,Neoplasm Recurrence ,Local ,Squamous Cell Carcinoma of Head and Neck ,Clinical Sciences ,Oncology and Carcinogenesis ,Oncology & Carcinogenesis - Abstract
Purpose Treatment with pembrolizumab, an anti-programmed death-1 antibody, at 10 mg/kg administered once every 2 weeks, displayed durable antitumor activity in programmed death-ligand 1 (PD-L1) -positive recurrent and/or metastatic (R/M) head and neck squamous cell carcinoma (HNSCC) in the KEYNOTE-012 trial. Results from the expansion cohort, in which patients with HNSCC, irrespective of biomarker status, received a fixed dose of pembrolizumab at a less frequent dosing schedule, are reported. Patients and Methods Patients with R/M HNSCC, irrespective of PD-L1 or human papillomavirus status, received pembrolizumab 200 mg intravenously once every 3 weeks. Imaging was performed every 8 weeks. Primary end points were overall response rate (ORR) per central imaging vendor (Response Evaluation Criteria in Solid Tumors v1.1) and safety. Secondary end points included progression-free survival, overall survival, and association of response and PD-L1 expression. Patients who received one or more doses of pembrolizumab were included in analyses. Results Of 132 patients enrolled, median age was 60 years (range, 25 to 84 years), 83% were male, and 57% received two or more lines of therapy for R/M disease. ORR was 18% (95% CI, 12 to 26) by central imaging vendor and 20% (95% CI, 13 to 28) by investigator review. Median duration of response was not reached (range, ≥ 2 to ≥ 11 months). Six-month progression-free survival and overall survival rates were 23% and 59%, respectively. By using tumor and immune cells, a statistically significant increase in ORR was observed for PD-L1-positive versus -negative patients (22% v 4%; P = .021). Treatment-related adverse events of any grade and grade ≥ 3 events occurred in 62% and 9% of patients, respectively. Conclusion Fixed-dose pembrolizumab 200 mg administered once every 3 weeks was well tolerated and yielded a clinically meaningful ORR with evidence of durable responses, which supports further development of this regimen in patients with advanced HNSCC.
- Published
- 2016
32. Radiation-Related Toxicities Using Organ Sparing Total Marrow Irradiation Transplant Conditioning Regimens
- Author
-
Shinde, Ashwin, Yang, Dongyun, Frankel, Paul, Liu, An, Han, Chunhui, Del Vecchio, Bianca, Schultheiss, Timothy, Cheng, Jonathan, Li, Richard, Kim, Daniel, Radany, Eric H., Hui, Susanta, Somlo, George, Rosenthal, Joseph, Stein, Anthony, Forman, Stephen, and Wong, Jeffrey Y.C.
- Published
- 2019
- Full Text
- View/download PDF
33. Knockout Serum Replacement Promotes Cell Survival by Preventing BIM from Inducing Mitochondrial Cytochrome C Release.
- Author
-
Ishii, Yuki, Nhiayi, May Keu, Tse, Edison, Cheng, Jonathan, Massimino, Michele, Durden, Donald L, Vigneri, Paolo, and Wang, Jean YJ
- Subjects
Cell Line ,Tumor ,Mitochondria ,Animals ,Humans ,Mice ,Pyrimidines ,Cytochromes c ,Membrane Proteins ,Fusion Proteins ,bcr-abl ,Proto-Oncogene Proteins ,Culture Media ,Cell Survival ,Gene Expression Regulation ,Neoplastic ,Apoptosis Regulatory Proteins ,Leukemia ,Myelogenous ,Chronic ,BCR-ABL Positive ,Imatinib Mesylate ,Dasatinib ,Bcl-2-Like Protein 11 ,General Science & Technology - Abstract
Knockout serum replacement (KOSR) is a nutrient supplement commonly used to replace serum for culturing stem cells. We show here that KOSR has pro-survival activity in chronic myelogenous leukemia (CML) cells transformed by the BCR-ABL oncogene. Inhibitors of BCR-ABL tyrosine kinase kill CML cells by stimulating pro-apoptotic BIM and inhibiting anti-apoptotic BCL2, BCLxL and MCL1. We found that KOSR protects CML cells from killing by BCR-ABL inhibitors--imatinib, dasatinib and nilotinib. The protective effect of KOSR is reversible and not due to the selective outgrowth of drug-resistant clones. In KOSR-protected CML cells, imatinib still inhibited the BCR-ABL tyrosine kinase, reduced the phosphorylation of STAT, ERK and AKT, down-regulated BCL2, BCLxL, MCL1 and up-regulated BIM. However, these pro-apoptotic alterations failed to cause cytochrome c release from the mitochondria. With mitochondria isolated from KOSR-cultured CML cells, we showed that addition of recombinant BIM protein also failed to cause cytochrome c release. Besides the kinase inhibitors, KOSR could protect cells from menadione, an inducer of oxidative stress, but it did not protect cells from DNA damaging agents. Switching from serum to KOSR caused a transient increase in reactive oxygen species and AKT phosphorylation in CML cells that were protected by KOSR but not in those that were not protected by this nutrient supplement. Treatment of KOSR-cultured cells with the PH-domain inhibitor MK2206 blocked AKT phosphorylation, abrogated the formation of BIM-resistant mitochondria and stimulated cell death. These results show that KOSR has cell-context dependent pro-survival activity that is linked to AKT activation and the inhibition of BIM-induced cytochrome c release from the mitochondria.
- Published
- 2015
34. The Vitamin D Metabolite Ratio Is Associated With Volumetric Bone Density in Older Men.
- Author
-
Ginsberg, Charles, Blackwell, Terri, Cheng, Jonathan H, Potok, O Alison, Cauley, Jane A, Ensrud, Kristine E, Hsu, Simon, Kado, Deborah M, Orwoll, Eric, Cawthon, Peggy M, and Ix, Joachim H
- Subjects
VITAMIN D metabolism ,BONE density ,COMPUTED tomography - Abstract
Context Serum 25-hydroxyvitamin D (25(OH)D) is the current marker of vitamin D adequacy, but its relationship with bone health has been inconsistent. The ratio of 24,25-dihydroxyvitamin D
3 to 25(OH)D3 (vitamin D metabolite ratio or VMR) is a marker of vitamin D that has been associated with longitudinal changes in bone mineral density (BMD) and fracture risk. Objective High-resolution peripheral quantitative computed tomography (HR-pQCT) provides information on bone health beyond standard dual-energy x-ray absorptiometry, in that it measures volumetric BMD (vBMD) as well bone strength. The relationship of the VMR with vBMD and bone strength remains unknown. Methods We evaluated the associations of the VMR and 25(OH)D3 with vBMD and bone strength in the distal radius and tibia, assessed by HR-pQCT in 545 older men participating in the Osteoporotic Fractures in Men (MrOS) Study. Primary outcomes were vBMD and estimated failure load (EFL, a marker of bone strength) at the distal radius and tibia. Results The mean age was 84 ± 4 years, 88.3% were White, and 32% had an estimated glomerular filtration rate <60 mL/min/1.73 m2 . In adjusted models, each twofold higher VMR was associated with a 9% (3%, 16%) higher total vBMD and a 13% (5%, 21%) higher EFL at the distal radius. Results were similar at the distal tibia. 25(OH)D3 concentrations were not associated with any of the studied outcomes. Conclusion Among older men, a higher VMR was associated with greater vBMD and bone strength while 25(OH)D3 was not. The VMR may serve as a valuable marker of skeletal health in older men. [ABSTRACT FROM AUTHOR]- Published
- 2024
- Full Text
- View/download PDF
35. The Vitamin D Metabolite Ratio Is Associated With Volumetric Bone Density in Older Men
- Author
-
Ginsberg, Charles, primary, Blackwell, Terri, additional, Cheng, Jonathan H, additional, Potok, O Alison, additional, Cauley, Jane A, additional, Ensrud, Kristine E, additional, Hsu, Simon, additional, Kado, Deborah M, additional, Orwoll, Eric, additional, Cawthon, Peggy M, additional, and Ix, Joachim H, additional
- Published
- 2023
- Full Text
- View/download PDF
36. Percutaneous Fixation of Pediatric Fractures of the Proximal Phalanx Neck: A Novel Technique
- Author
-
Pientka, William F., II and Cheng, Jonathan
- Published
- 2020
- Full Text
- View/download PDF
37. Clinical outcomes with therapies for previously treated recurrent/metastatic head-and-neck squamous cell carcinoma (R/M HNSCC): A systematic literature review
- Author
-
Lala, Mallika, Chirovsky, Diana, Cheng, Jonathan D., and Mayawala, Kapil
- Published
- 2018
- Full Text
- View/download PDF
38. Mechanism of disease in early osteoarthritis: application of modern MR imaging techniques — a technical report
- Author
-
Jobke, Bjoern, Bolbos, Radu, Saadat, Ehsan, Cheng, Jonathan, Li, Xiaojuan, and Majumdar, Sharmila
- Subjects
Arthritis ,Biomedical Imaging ,Musculoskeletal ,Cadaver ,Early Diagnosis ,Female ,Humans ,Knee Joint ,Magnetic Resonance Imaging ,Middle Aged ,Osteoarthritis ,Knee ,Cartilage ,Osteoarthritis ,Degeneration ,MRI ,Histology ,Biomedical Engineering ,Clinical Sciences ,Cognitive Sciences ,Nuclear Medicine & Medical Imaging - Abstract
The application of biomolecular magnetic resonance imaging becomes increasingly important in the context of early cartilage changes in degenerative and inflammatory joint disease before gross morphological changes become apparent. In this limited technical report, we investigate the correlation of MRI T1, T2 and T1ρ relaxation times with quantitative biochemical measurements of proteoglycan and collagen contents of cartilage in close synopsis with histologic morphology. A recently developed MRI sequence, T1ρ, was able to detect early intracartilaginous degeneration quantitatively and also qualitatively by color mapping demonstrating a higher sensitivity than standard T2-weighted sequences. The results correlated highly with reduced proteoglycan content and disrupted collagen architecture as measured by biochemistry and histology. The findings lend support to a clinical implementation that allows rapid visual capturing of pathology on a local, millimeter level. Further information about articular cartilage quality otherwise not detectable in vivo, via normal inspection, is needed for orthopedic treatment decisions in the present and future.
- Published
- 2013
39. Diffusion-weighted imaging and diffusion tensor imaging as adjuncts to conventional MRI for the diagnosis and management of peripheral nerve sheath tumors: current perspectives and future directions
- Author
-
Mazal, Alexander T., Ashikyan, Oganes, Cheng, Jonathan, Le, Lu Q., and Chhabra, Avneesh
- Published
- 2019
- Full Text
- View/download PDF
40. Correction to: Resection of Isolated Pelvic Recurrences after Colorectal Surgery: Long-Term Results and Predictors of Improved Clinical Outcome
- Author
-
Henry, Leonard R., Sigurdson, Elin, Ross, Eric A., Lee, John S., Watson, James C., Cheng, Jonathan D., Freedman, Gary M., Konski, Andre, and Hoffman, John P.
- Published
- 2021
- Full Text
- View/download PDF
41. Distinct Localization of Histone H3 Acetylation and H3-K4 Methylation to the Transcription Start Sites in the Human Genome
- Author
-
Liang, Gangning, Wei, Vivian, Yoo, Christine, Cheng, Jonathan C., Nguyen, Carvell T., Weisenberger, Daniel J., Egger, Gerda, Takai, Daiya, Gonzales, Felicidad A., Jones, Peter A., and Groudine, Mark T.
- Published
- 2004
42. Modeling and testing compulsive eating behaviors in animals
- Author
-
Moore, Catherine F., primary, Cheng, Jonathan E., additional, Sabino, Valentina, additional, and Cottone, Pietro, additional
- Published
- 2019
- Full Text
- View/download PDF
43. Contributors
- Author
-
Balodis, Iris M., primary, Bonder, Revi, additional, Boutrel, Benjamin, additional, Brewerton, Timothy D., additional, Cheng, Jonathan E., additional, Cottone, Pietro, additional, Davis, Caroline, additional, Fernández-Aranda, Fernando, additional, Gearhardt, Ashley N., additional, Herb, Kirstie M., additional, Jiménez-Murcia, Susana, additional, Kenny, Paul J., additional, Koob, George F., additional, MacKillop, James, additional, Mestre-Bach, Gemma, additional, Meule, Adrian, additional, Moore, Catherine F., additional, Murphy, Cara M., additional, Naish, Katherine R., additional, Potenza, Marc N., additional, Rossetti, Clara, additional, Sabino, Valentina, additional, Saules, Karen K., additional, Schiestl, Emma T., additional, Schulte, Erica M., additional, Stice, Eric, additional, Yokum, Sonja, additional, and Zorrilla, Eric P., additional
- Published
- 2019
- Full Text
- View/download PDF
44. In-Depth Look at the Anatomical Relationship of the Lesser Occipital Nerve, Great Auricular Nerve, and Spinal Accessory Nerve and Their Implication in Safety of Operations in the Posterior Triangle of the Neck
- Author
-
Amirlak, Bardia, Lu, Karen B., Erickson, Cameron R., Sanniec, Kyle, Totonchi, Ali, Peled, Ziv M., and Cheng, Jonathan C.
- Published
- 2020
- Full Text
- View/download PDF
45. Comprehensive molecular characterization of clinical responses to PD-1 inhibition in metastatic gastric cancer
- Author
-
Kim, Seung Tae, Cristescu, Razvan, Bass, Adam J., Kim, Kyoung-Mee, Odegaard, Justin I., Kim, Kyung, Liu, Xiao Qiao, Sher, Xinwei, Jung, Hun, Lee, Mijin, Lee, Sujin, Park, Se Hoon, Park, Joon Oh, Park, Young Suk, Lim, Ho Yeong, Lee, Hyuk, Choi, Mingew, Talasaz, AmirAli, Kang, Peter Soonmo, Cheng, Jonathan, Loboda, Andrey, Lee, Jeeyun, and Kang, Won Ki
- Published
- 2018
- Full Text
- View/download PDF
46. Efficacy and safety of pembrolizumab in recurrent/metastatic head and neck squamous cell carcinoma: pooled analyses after long-term follow-up in KEYNOTE-012
- Author
-
Mehra, Ranee, Seiwert, Tanguy Y., Gupta, Shilpa, Weiss, Jared, Gluck, Iris, Eder, Joseph P., Burtness, Barbara, Tahara, Makoto, Keam, Bhumsuk, Kang, Hyunseok, Muro, Kei, Geva, Ravit, Chung, Hyun Cheol, Lin, Chia-Chi, Aurora-Garg, Deepti, Ray, Archana, Pathiraja, Kumudu, Cheng, Jonathan, Chow, Laura Q. M., and Haddad, Robert
- Published
- 2018
- Full Text
- View/download PDF
47. Traumatic isolated partial oculomotor nerve neuropraxia without radiological signs
- Author
-
Lee, Brendon W.H., primary, Cheng, Jonathan, additional, Narayan, Daniel, additional, Odouard, Capucine, additional, and Figueira, Edwin, additional
- Published
- 2023
- Full Text
- View/download PDF
48. Supplemental Results from A Phase I Trial of Combined Ridaforolimus and MK-2206 in Patients with Advanced Malignancies
- Author
-
Gupta, Shilpa, primary, Argilés, Guillem, primary, Munster, Pamela N., primary, Hollebecque, Antoine, primary, Dajani, Olav, primary, Cheng, Jonathan D., primary, Wang, Ruixue, primary, Swift, Ann, primary, Tosolini, Alessandra, primary, and Piha-Paul, Sarina A., primary
- Published
- 2023
- Full Text
- View/download PDF
49. Data from A Phase I Dose-Escalation Study of Danusertib (PHA-739358) Administered as a 24-Hour Infusion with and without Granulocyte Colony-Stimulating Factor in a 14-Day Cycle in Patients with Advanced Solid Tumors
- Author
-
Cohen, Roger B., primary, Jones, Suzanne F., primary, Aggarwal, Charu, primary, von Mehren, Margaret, primary, Cheng, Jonathan, primary, Spigel, David R., primary, Greco, F. Anthony, primary, Mariani, Mariangela, primary, Rocchetti, Maurizio, primary, Ceruti, Roberta, primary, Comis, Silvia, primary, Laffranchi, Bernard, primary, Moll, Jurgen, primary, and Burris, Howard A., primary
- Published
- 2023
- Full Text
- View/download PDF
50. Supplementary Figure S1 from Talimogene Laherparepvec and Pembrolizumab in Recurrent or Metastatic Squamous Cell Carcinoma of the Head and Neck (MASTERKEY-232): A Multicenter, Phase 1b Study
- Author
-
Harrington, Kevin J., primary, Kong, Anthony, primary, Mach, Nicolas, primary, Chesney, Jason A., primary, Fernandez, Beatriz Castelo, primary, Rischin, Danny, primary, Cohen, Ezra E.W., primary, Radcliffe, Hoi-Shen, primary, Gumuscu, Burak, primary, Cheng, Jonathan, primary, Snyder, Wendy, primary, and Siu, Lillian L., primary
- Published
- 2023
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.