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Al-Ward S, Kim A, McCann C, Ruschin M, Cheung P, Sahgal A, Keller B. TH-AB-BRA-08: Simulated Tumor Tracking in An MRI Linac for Lung Tumor Lesions Using the Monaco Treatment Planning System. Med Phys 2016. [DOI: 10.1118/1.4958059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Carter K, Lahiri M, Cheung P, Santosa A, Rome K. AB1119-HPR Evaluation of The Podiatric Need of People with Inflammatory Arthritis in Singapore. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.3175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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78
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Al-Ward S, Kim A, McCann C, Ruschin M, Cheung P, Sahgal A, Keller B. SU-F-T-451: Doses to Organs-At-Risk in the Presence and Absence of a 1.5 T Magnetic Field for NSCLC Patients Undergoing SABR. Med Phys 2016. [DOI: 10.1118/1.4956636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Cheung P, Emanuel A, Heward J, Maddalena J, Toth D, Saward L, Kodihalli S. Reduced immunogenic response to residual
CHO
cell protein in recombinant factor
IX
(
IB
1001) drug product in normal healthy rabbits. Haemophilia 2016; 22:e220-2. [DOI: 10.1111/hae.12890] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/30/2015] [Indexed: 01/21/2023]
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Erler D, Cheung P, Sahgal A, Chung H, Poon I, Chu W, Zhang L, Bedard G, Pulenzas N, Chow E. A Phase 1 Trial of Stereotactic Ablative Radiation Therapy (SABR) for Oligometastatic Cancer: Toxicity and Quality of Life. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.1804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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81
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Quon H, Ong A, Cheung P, Chu W, Chung H, Vesprini D, Chowdhury A, Panjwani D, Pang G, Korol R, Davidson M, Ravi A, McCurdy B, Zhang L, Bucher O, Mamedov A, Deabreu A, Lylyk E, Loblaw D. PATRIOT Trial: Randomized Phase 2 Study of Prostate Stereotactic Body Radiation Therapy Comparing 11 Versus 29 Days Overall Treatment Time. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.473] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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82
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Helou J, Thibault I, Yeung L, Poon I, Tjong M, Chiang A, Jain S, Soliman H, Cheung P. Stereotactic Ablative Radiation Therapy for Pulmonary Oligometastases and Oligoprogression. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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83
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Helou J, Nicolae A, Musunuru H, Davidson M, Commisso K, Deabreu A, Marquez A, Cheung P, Chung H, Chu W, Ravi A, Loblaw D. Two Stereotactic Ablative Radiation Therapy Treatments (2STAR) for Localized Prostate Cancer: Feasibility and Early Results. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.1116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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84
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Tung KL, Cheung P, Kwok TK, Wong KK, Mak KH, Wong WC. Single-door cervical laminoplasty using titanium miniplates alone. J Orthop Surg (Hong Kong) 2015; 23:174-9. [PMID: 26321544 DOI: 10.1177/230949901502300211] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
PURPOSE To review outcome of 29 patients who underwent single-door cervical laminoplasty for myelopathy using titanium miniplates alone. METHODS Records of 20 men and 9 women aged 35 to 79 (mean, 64.3) years who underwent single-door cervical laminoplasty for myelopathy using titanium miniplates alone were reviewed. A total of 125 laminae were opened; 97 of them were fixed with a titanium miniplate. In 19 patients, a 20-hole titanium miniplate bent to the contour of a lamina was used and fixed into 3 laminae at alternate levels. In the remaining 10 patients, the pre-contoured ARCH Laminoplasty System was used and fixed into all laminae. In most patients, screw fixation was unicortical, and no spacer or bone graft was used. RESULTS The mean follow-up duration was 4 (range, 2-9) years. At one-year follow-up, the mean Japanese Orthopaedic Association (JOA) score improved from 9.2 to 13.2 (p<0.001). The mean JOA recovery rate was 64%. No patient had neurological deterioration. The mean anteroposterior diameter increased from 14.3 mm to 19.7 mm; the mean increase was 6.1 mm in the plated laminae and 5.3 mm in the unplated laminae (p=0.11). Out of the 125 laminae, there were 2 hinge non-unions in the unplated laminae, and 2 screw pullouts (not associated with plate loosening). No patient had penetration into the vertebral foramen or neuroforamen. Spring-back closure occurred in 5 (18%) of the 28 unplated laminae, with a mean of <3 mm loss of the initial expansion. Two patients developed transient C5 palsy presenting as shoulder abduction weakness. One patient had a delayed dural tear due to a sharp spike at the edge of the opened C6 lamina. CONCLUSION Single-door cervical laminoplasty using miniplates alone is a safe technique and achieves a high hinge union rate, good canal expansion, and neurological recovery.
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Cheung P, De Wit M, Bingham C, Kirwan J, Leong A, March L, Montie P, Scholte-Voshaar M, Gossec L. AB1156 Involvement of Patient Research Partners in Clinical Research: Recommendations Developed by Omeract. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.1702] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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86
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Cheung P, Lahiri M, Teng G, Lim A, Gossec L, March L. FRI0052 Large Joint Involvement in Asian Rheumatoid Arthritis Patients: A Longitudinal Study of Treatment Outcomes Using Power Doppler as a Bedside Monitoring Tool in 101 Patients. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.2755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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87
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Chew E, Griva K, Cheung P. FRI0615-HPR Evaluation of Coping Styles in Established Rheumatoid Arthritis Patients in an Asian Cohort. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.1939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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88
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Chew E, Griva K, Cheung P. AB1219-HPR Predictive Ability of Coping Perception on Quality of Life in Asian Rheumatoid Arthritis Patients. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.4314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Lahiri M, Santosa A, Teoh L, Teng G, Cheung P. AB1136 Predictors of Functional Disability in a Multi-Ethnic Asian Arthritis Cohort Results from the Singapore Early Arthritis Cohort. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.4593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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90
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Lahiri M, Santosa A, Teoh L, Teng G, Cheung P. AB1137 Use of Complementary and Alternative Medicine is Associated with Increased Delay to Initiation of Disease Modifying Anti-Rheumatic Drug Therapy in Patients with Inflammatory Polyarthritis: Results from the Singapore Early Arthritis Cohort. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.5656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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91
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Wallis CJD, Cheung P, Herschorn S, Saskin R, Su J, Klotz LH, Kulkarni GS, Lee Y, Kodama RT, Narod SA, Nam RK. Complications following surgery with or without radiotherapy or radiotherapy alone for prostate cancer. Br J Cancer 2015; 112:977-82. [PMID: 25688739 PMCID: PMC4366895 DOI: 10.1038/bjc.2015.54] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2014] [Accepted: 01/12/2015] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND Men undergoing treatment of clinically localised prostate cancer may experience a number of treatment-related complications, which affect their quality of life. METHODS On the basis of population-based retrospective cohort of men undergoing surgery, with or without subsequent radiotherapy, or radiotherapy alone for prostate cancer in Ontario, Canada, we measured the incidence of treatment-related complications using administrative and billing data. RESULTS Of 36 984 patients, 15 870 (42.9%) underwent surgery alone, 4519 (12.2%) underwent surgery followed by radiotherapy, and 16 595 (44.9%) underwent radiotherapy alone. For all end points except urologic procedures, the 5-year cumulative incidence rates were lowest in the surgery only group and highest in the radiotherapy only group. Intermediary rates were seen in the surgery followed by radiotherapy group, except for urologic procedures where rates were the highest in this group. Although age and comorbidity were important predictors, radiotherapy as the primary treatment modality was associated with higher rates for all complications (adjusted hazard ratios 1.6-4.7, P=0.002 to <0.0001). CONCLUSIONS In patients treated for prostate cancer, radiation after surgery increases the rate of complications compared with surgery alone, though these rates remain lower than patients treated with radiation alone. This information may inform patient and physician decision making in the treatment of prostate cancer.
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Gladwish A, Loblaw A, Cheung P, Morton G, Chung H, Deabreu A, Pang G, Mamedov A. Accelerated hypofractioned postoperative radiotherapy for prostate cancer: a prospective phase I/II study. Clin Oncol (R Coll Radiol) 2015; 27:145-52. [PMID: 25577669 DOI: 10.1016/j.clon.2014.12.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2014] [Revised: 10/10/2014] [Accepted: 12/10/2014] [Indexed: 10/24/2022]
Abstract
AIMS To present the initial findings of a single institution, phase I/II study investigating hypofractionated radiotherapy in patients undergoing post-prostatectomy treatment. MATERIALS AND METHODS Patients requiring postoperative radiotherapy were prospectively enrolled. Dose was prescribed to the prostate bed with 51 Gy in 17 daily fractions. Androgen deprivation was optional. Acute and late gastrointestinal/genitourinary toxicity were assessed using the National Cancer Institute Common Terminology Criteria for Adverse Events version 3.0 and quality of life was assessed using the Expanded Prostate Cancer Index Composite evaluation tool. Prostate-specific antigen (PSA) was evaluated at every follow-up. RESULTS Thirty patients were enrolled between 2009 and 2011. The median age was 65 years and most had Gleason 7 disease (86%) with pT2c or pT3a (82%). Positive margins were documented in 67% of the patients. The median pre-treatment PSA was 0.12 ng/ml. The median follow-up was 24 months. Overall toxicity was low, with >80% of patients having ≤ grade 1 acute toxicity in both genitourinary and gastrointestinal realms. Similarly, only two patients (6%) experienced grade 2/3 late gastrointestinal/genitourinary toxicity. Quality of life scores were also indicative of a well-tolerated treatment. PSA failure was seen in five patients (17%). CONCLUSIONS We present a hypofractionated schedule of postoperative prostate radiotherapy that is both well tolerated in terms of both toxicity and quality of life measures. Initial PSA control is encouraging. Further evaluation with a longer follow-up and a larger cohort is warranted.
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Hui W, Fung R, Dorsch M, Ranjbar K, Cheung P, Tyrrell B, Leung R, Brass N. LEFT MAIN INTERVENTIOIN IN A STANDALONE PCI CENTRE - A RECENT 5 YEAR EXPERIENCE. Can J Cardiol 2014. [DOI: 10.1016/j.cjca.2014.07.107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Syed B, Green A, Morgan D, Ellis I, Cheung P. LKB1 — A potential novel biomarker and clinical significance in breast cancer. J Geriatr Oncol 2014. [DOI: 10.1016/j.jgo.2014.09.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Aljabab S, Cheung P, Dennis K, Morgan S. Hemostatic Radiation Therapy in Advanced Bladder Cancer: A Single-Institution Review. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.2043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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96
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Leung R, Yau T, Chao C, Yoshizawa C, Cheung P. Impact of the 21-Gene Breast Cancer Assay on Treatment Recommendations for Estrogen Receptor-Positive (Er+) Early Stage Breast Cancer (Esbc) in Hong Kong. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu327.34] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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97
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Chiang A, Thibault I, Rodrigues G, Palma D, Warner A, Poon I, Soliman H, Jain S, Cheung P. Accelerated Hypofractionation Versus Stereotactic Ablative Radiation Therapy (SABR) for Early-Stage Non-Small Cell Lung Cancer: Results of a Propensity Score–Matched Analysis. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.649] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Loblaw D, Pickles T, Crook J, Martin A, Vigneault E, Catton C, Lukka H, Cheung P, Sethukavalan P, Warner A, Yang Y, Rodrigues G. Stereotactic Ablative Radiation Therapy Versus Low-Dose-Rate Brachytherapy: A Propensity Matched Analysis of Canadian Data. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.1343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Chiang A, Loblaw D, Chu W, Jain S, Erler D, Ravi A, Davidson M, Korol R, Chung H, Vesprini D, Morton G, Cheung P. Stereotactic Body Radiation Therapy (SBRT) Boost to Mimic High-Dose-Rate (HDR) Brachytherapy for Intermediate-Risk Prostate Cancer: A Phase 1 Study. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.1363] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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100
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Musunuru H, Sethukavalan P, Cheung P, Morton G, D’Alimonte L, Deabreu A, Mamedov A, Zhang L, Chung H, Loblaw A. Comparison of Active Surveillance, Low-Dose-Rate Brachytherapy, Stereotactic Ablative Body Radiation Therapy, and Standard External Beam in Low-Risk Prostate Cancer. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.1402] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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