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Teng R, Takano A, Tan WL, Ang MK, Toh CK, Ng QS, Lim WT, Tan EH, Lim T, Tan D. T790M co-exists with other secondary resistance mechanisms in EGFR mutation positive NSCLC and are associated with inferior outcomes. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx091.051] [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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Wang SR, Malik S, Tan IB, Chan YS, Hoi Q, Ow JL, He CZ, Ching CE, Poh DYS, Seah HM, Cheung KHT, Perumal D, Devasia AG, Pan L, Ang S, Lee SE, Ten R, Chua C, Tan DSW, Qu JZZ, Bylstra YM, Lim L, Lezhava A, Ng PC, Wong CW, Lim T, Tan P. Technical Validation of a Next-Generation Sequencing Assay for Detecting Actionable Mutations in Patients with Gastrointestinal Cancer. J Mol Diagn 2016; 18:416-424. [PMID: 26970585 DOI: 10.1016/j.jmoldx.2016.01.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Revised: 12/02/2015] [Accepted: 01/08/2016] [Indexed: 02/06/2023] Open
Abstract
Targeted next-generation sequencing is becoming increasingly common as a clinical diagnostic and prognostic test for patient- and tumor-specific genetic profiles as well as to optimally select targeted therapies. Here, we describe a custom-developed, next-generation sequencing test for detecting single-nucleotide variants (SNVs) and short insertions and deletions (indels) in 93 genes related to gastrointestinal cancer from routine formalin-fixed, paraffin-embedded clinical specimens. We implemented a validation strategy, based on the College of American Pathologists requirements, using reference DNA mixtures from cell lines with known genetic variants, which model a broad range of allele frequencies. Test sensitivity achieved >99% for both SNVs and indels, with allele frequencies >10%, with high specificity (97.4% for SNVs and 93.6% for indels). We further confirmed test accuracies using primary formalin-fixed, paraffin-embedded colorectal cancer specimens characterized by alternative and conventional clinical diagnostic technologies. Robust performance was observed on the formalin-fixed, paraffin-embedded specimens: sensitivity was 97.2% and specificity was 99.2%. We also observed high intrarun and inter-run reproducibility, as well as a low cross-contamination rate. Overall assessment using cell line samples and formalin-fixed, paraffin-embedded samples showed that our custom next-generation sequencing assay has consistent detection sensitivity down to 10% variant frequency.
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Lim T, Jani A, Cooper S, Rossi P. Better Toxicity Outcomes With HDR and LDR Brachytherapy in Comparison With External Beam Radiation Therapy for Prostate Cancer. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.1058] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Lim T, Wang J, Frank S, Stafford R, Bruno T, Bathala T, Mahmood U, Pugh T, Ibbott G, Kudchadker R. SU-E-J-214: MR Protocol Development to Visualize Sirius MRI Markers in Prostate Brachytherapy Patients for MR-Based Post-Implant Dosimetry. Med Phys 2015. [DOI: 10.1118/1.4924300] [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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Ee S, Young S, Tan E, Lim D, Tan G, Jain A, Zeng W, Lim T, Takano A, Tan D. Clinical Characteristics and Response to EGFR TKI in Never Smoker Squamous Lung Cancer. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv050.20] [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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Nalliah C, Lim T, Qian P, Bhaskaran A, Kurup R, Kizana E, Kovoor P, Ross D, Thomas S. Left atrial surface area remaining not isolated after ablation of persistent atrial fibrillation predicts long-term outcomes. Heart Lung Circ 2015. [DOI: 10.1016/j.hlc.2015.06.307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Lim T, Prabhu R, Switchenko J, Mister D, Torres M. Skin Sparing Mastectomy and Immediate Reconstruction in Locally Advanced Breast Cancer Patients Treated With Neoadjuvant Chemotherapy and Postmastectomy Radiation Therapy: Long-Term Oncologic and Patient-Reported Quality of Life Outcomes. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Lim T, Kim T. Locally advanced or metastatic pancreatic cancer in elderly patients: Chemotherapy versus best supportive care. J Geriatr Oncol 2014. [DOI: 10.1016/j.jgo.2014.06.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Lim T, Wang J, Kudchadker R, Stafford R, Bathala T, Pugh T, Ibbott G, Frank S. SU-C-17A-02: Sirius MRI Markers for Prostate Post-Implant Assessment: MR Protocol Development. Med Phys 2014. [DOI: 10.1118/1.4889729] [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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Lim T, Liss GM, Vernich L, Buyantseva L, Tarlo SM. Work-exacerbated asthma in a workers' compensation population. Occup Med (Lond) 2014; 64:206-10. [PMID: 24556464 DOI: 10.1093/occmed/kqu001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Asthma is becoming more prevalent with large numbers of individuals suffering from work-exacerbated asthma. AIMS To examine the characteristics of workplace exposures and working days lost in relation to work-exacerbated asthma (WEA) in a workers' compensation population. METHODS An analysis of accepted workers' compensation asthma claims in Ontario over a 5-year period. Claims among the top three industry groups were categorized based on working time lost of 1 day or less, 2-5 days and 6 days or more. Attributable agents were subdivided into dusts, smoke, chemicals and sensitizers. RESULTS Among the asthma claims, 72% (645) fulfilled criteria for WEA from their history. The commonest industry groups were services, education and health care, with 270 claims that met our analysis requirements. Within these industry groups, education had a lower proportion of workers with short exacerbations (missing 1 day or less: 27%) while the health care industry had a higher than expected proportion of short exacerbations (55%). The agents to which WEA was attributed differed across the groups, with dusts having the highest proportion in the education group (65%), smoke in the service industry (34%) and sensitizers in health care (41%). Those agents more commonly attributed to exacerbations tended to have lower rates of prolonged exacerbation compared with less commonly involved agents. CONCLUSIONS The morbidity of WEA and the type of agents to which it was attributed varied between industry groups.
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van Grieken NCT, Aoyama T, Chambers PA, Bottomley D, Ward LC, Inam I, Buffart TE, Das K, Lim T, Pang B, Zhang SL, Tan IB, Carvalho B, Heideman DAM, Miyagi Y, Kameda Y, Arai T, Meijer GA, Tsuburaya A, Tan P, Yoshikawa T, Grabsch HI. Erratum: KRAS and BRAF mutations are rare and related to DNA mismatch repair deficiency in gastric cancer from the East and the West: Results from a large international multicentre study. Br J Cancer 2014. [PMCID: PMC3899782 DOI: 10.1038/bjc.2013.824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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Nalliah C, Lim T, Koay C, Chik W, Thelander J, Zecchin R, Ross D, Thomas S. Characterisation of Symptoms in Patients With Recurrent Atrial Arrhythmia Following Catheter Ablation. Heart Lung Circ 2013. [DOI: 10.1016/j.hlc.2013.05.254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Abstract
The building industry has in recent years seen huge costs incurreddue to disputes arising on notice requirement clauses. Theseclaims could have been averted if the parties had been diligent inproviding the necessary notices. This article sets out to explorethe law briefl y as interpreted by the courts in common law andequity and discuss the possibility of defence under the principle ofpromissory estoppel. More importantly it also shares the author’sview on how such pitfalls could have been prevented by givingthe proper notices within the timeline required by the contractconditions. It cannot be emphasised enough that contractorswould be wise to comply strictly with the notice provisions in thecontract instead of relying on the estoppel principle or waiver orunconscionability to save their day. Notice clauses essentiallyrequire a competent contracts administrator to follow the time lineprovided in the contract conditions and would be most effective ifthe project team worked closely with the contracts administratorto ensure that proper notices are given when directions orinstructions are received. Although it is common to see noticeclauses which make it a condition precedent for a contractor to beentitled to claim for an extension of time or loss and expense claimbeing interpreted restrictively, in any litigation or arbitration it isalways diffi cult to predict how the courts or tribunal would be willingto uphold such notice clause. It is therefore in the interest of theparties that notice clauses should be properly observed. Suffi ceto say, failure to comply with a notice clause and time bar may befatal to a claim.
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Lim T, Kowalski S, Tan K. Impact of Asthma Counseling by Pharmacist on Asthma Control and Medication Adherence in Asia. J Allergy Clin Immunol 2012. [DOI: 10.1016/j.jaci.2011.12.416] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Eisenstein A, Leung L, Lim T, Ning Z, Polanyi JC. Reaction dynamics at a metal surface; halogenation of Cu(110). Faraday Discuss 2012; 157:337-53; discussion 375-98. [DOI: 10.1039/c2fd20023f] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Kang H, Cho Y, Choi H, Kang B, Lim T. 355 Comparison of Usefulness Between Linear Probe and Microconvex Probe in Ultrasound-Guided Central Venous Catheterization. Ann Emerg Med 2011. [DOI: 10.1016/j.annemergmed.2011.06.387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Mánuel JM, Morales FM, Lozano JG, García R, Lim T, Kirste L, Aidam R, Ambacher O. Growth and characterization of InAlN layers nearly lattice-matched to GaN. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/pssc.201000985] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Park S, Ahn HK, Lim T, Park YH, Ahn JS, Im Y. CA 15-3 elevations according to breast cancer subtypes at initial diagnosis of metastatic breast cancer (MBC). J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e11109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Poh BK, Mancer K, Goh D, Lim T, Ng V, Ng KK, Ng FC. PlasmaKinetic™ (bipolar) transurethral resection of prostate: a prospective trial to study pathological artefacts, surgical parameters and clinical outcomes. Singapore Med J 2011; 52:336-339. [PMID: 21633766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
INTRODUCTION The aims of the study were to compare the degree of cautery artefacts in prostatic chips between monopolar and PlasmaKinetic™ transurethral resection of prostate (TURP), and to determine if there is any difference in the intraoperative and post surgical parameters between them. METHODS After institutional review board approval, patients were prospectively enrolled to undergo PlasmaKinetic™ TURP. Their parameters were compared with those of the historical monopolar TURP controls. All histological specimens were reviewed by a single senior pathologist. RESULTS 46 patients were recruited to undergo PlasmaKinetic™ TURP. The resection time was significantly longer for the bipolar group compared to the monopolar group (50.2 versus 36.7 min, p-value is 0.001). The speed of resection (resection weight/time) was lower for the bipolar group (0.45 versus 0.56 g/min, p-value is 0.017). More irrigant was used for the bipolar group (21.2 versus 15.6 litres, p-value is 0.001) intraoperatively. There was no statistically significant difference in terms of intraoperative drop in haemoglobin and serum sodium change between the two groups. There seems to be a lesser degree of cautery artefacts in the PlasmaKinetic™ group than the monopolar group (42.17 versus 45.07 microns); however, this was not statistically significant (p-value is 0.452). CONCLUSION Bipolar TURP seems to result in a lesser degree of cautery artefacts when compared to conventional monopolar TURP, albeit statistically insignificant, compared to monopolar TURP. TURP also resulted in a longer resection time and increased irrigant use, but no difference in blood loss and serum sodium levels.
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Lim T, Yun J, Lee J, Park S, Park J, Park Y, Lim H, Kang W. Updated survival results of the randomized phase II study comparing cisplatin/capecitabine (CX) with epirubicin plus CX (ECX) in advanced gastric cancer (AGC). J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.4_suppl.46] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
46 Background: We previously reported results of a randomized study showing that CX is equally active to ECX in terms of progression-free survival (PFS) (Yun et al. Eur J Cancer. 2010). Here we report updated overall survival (OS) results with an additional 12 months' follow-up. Methods: Ninety-one chemotherapy-naïve patients with histologically-confirmed, measurable AGC were randomized to receive CX (cisplatin 75 mg/m2 iv on day 1 and capecitabine 1,000 mg/m2 bid po on days 1-14, n=45) or ECX (epirubicin 50 mg/m2 plus CX, n=44) every 3 weeks. After CX or ECX had failed, second-line chemotherapy (SLC) was recommended for all patients if their performance status was preserved. Results: Treatment duration was similar for both arms (4.4 for CX v 4.2 months for ECX). There was no relevant difference in the occurrence of overall grade 3 or 4 toxicities between the CX and ECX arms (80% v 78%, respectively; p=0.516). However, none in the CX and 12% in the ECX arm discontinued treatment because of toxicity. There were no significant differences in therapeutic efficacy between CX and ECX with respect to the response rate (38% v 37%, respectively), PFS (6.4 v 6.5 months), as well as OS (12.7 v 13.8 months; p=0.51). After failure, 60% of patients (26 CX and 28 ECX patients) received SLC. However, OS was not differed whether a patient was treated with SLC or not (13.1 v 11.2 months; p=0.94). Conclusions: The present analysis confirms previous findings that both CX and ECX appear to be comparatively active as first-line chemotherapy for AGC. Furthermore, the role of SLC in AGC warrants further evaluation. No significant financial relationships to disclose.
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Yi JH, Kim JH, Baek KK, Lim T, Lee DJ, Ahn YC, Kim K, Kim SJ, Ko YH, Kim WS. Elevated LDH and paranasal sinus involvement are risk factors for central nervous system involvement in patients with peripheral T-cell lymphoma. Ann Oncol 2011; 22:1636-1643. [PMID: 21220520 PMCID: PMC3121968 DOI: 10.1093/annonc/mdq645] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Background: The incidence and risk factors of central nervous system (CNS) involvement in peripheral T-cell lymphomas (PTCLs) are still unclear. Patients and methods: We analyzed 228 patients with PTCLs, excluding cases of extranodal natural killer/T-cell lymphoma and primary cutaneous T-cell lymphoma, by retrospectively collecting the clinical features and outcomes of the patients. Results: Twenty events (8.77%, 20/228) of CNS involvement were observed during a median follow-up period of 13.9 months (range 0.03–159.43). Based on univariate analysis, elevated serum lactate dehydrogenase (LDH) level [P = 0.019, relative risk (RR) 5.904, 95% confidence interval (CI) 1.334–26.123] and involvement of the paranasal sinus (P = 0.032, RR 3.137, 95% CI 1.105–8.908) adversely affect CNS involvement. In multivariate analysis, both were independently poor prognostic factors for CNS relapse [elevated LDH level: P = 0.011, hazard ratio (HR) 6.716, 95% CI 1.548–29.131; involvement of the paranasal sinus: P = 0.008, HR 3.784, 95% CI 1.420–10.083]. The survival duration of patients with CNS involvement was significantly shorter than that of the patients without CNS involvement (P = 0.009), with median overall survival of 7.60 months (95% CI of 4.92–10.28) versus 27.43 months (95% CI of 0.00–57.38), respectively. Conclusions: Elevated LDH level and involvement of the paranasal sinus are two risk factors for CNS involvement in patients with PTCLs. Considering the poor prognoses after CNS relapse, prophylaxis should be considered with the presence of any risk factor.
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Chik W, Lim T, Koay C, See V, McCall R, Zecchin R, Byth K, Thomas L, Ross D, Thomas S. Mitral Isthmus Ablation Line Reconnections are Common and Predicts Mitral Annular Dependent Flutters Following Pulmonary Vein Isolations for Atrial Fibrillation. Heart Lung Circ 2011. [DOI: 10.1016/j.hlc.2011.05.254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Chik W, Lim T, Koay C, See V, McCall R, Zecchin R, Byth K, Thomas L, Ross D, Thomas S. Cavotricuspid Isthmus Ablation Line Reconnections are Associated with Clinically Inducible Cavotricuspid Isthmus Dependent Flutters in Patients Undergoing Pulmonary Vein Isolation For Atrial Fibrillation. Heart Lung Circ 2011. [DOI: 10.1016/j.hlc.2011.05.226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Lim T, Koay C, See V, McCall R, Chik W, Zecchin R, Byth K, Seow S, Thomas L, Ross D, Thomas S. Larger Body Size but not BMI Predict Longer Atrial Fibrillation Ablation Procedure Times and Increased Arrhythmia Recurrences on Long Term Follow Up. Heart Lung Circ 2011. [DOI: 10.1016/j.hlc.2011.05.248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Lim T, Koay C, See V, Zecchin R, McCall R, Chik W, Byth K, Seow S, Thomas L, Ross D, Thomas S. Improvements in Quality Of Life and 6-Minute Walk Distances are Not Affected by Different Ablation Strategies or Recurrent Atrial Tachyarrhythmias but may be Worsened by Antiarrhythmic Drug Therapy. Heart Lung Circ 2011. [DOI: 10.1016/j.hlc.2011.05.241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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