5 results on '"Cheng, K.-K."'
Search Results
2. The West Midlands Bladder Cancer Prognosis Programme: rationale and design
- Author
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Zeegers, Maurice P., Bryan, Richard T., Langford, Carolyn, Billingham, Lucinda, Murray, Paul, Deshmukh, Neeta S., Hussain, Syed, James, Nick, Wallace, Michael D. A., and Cheng, K. K.
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- 2010
- Full Text
- View/download PDF
3. Targeted deep sequencing of urothelial bladder cancers and associated urinary DNA: a 23-gene panel with utility for non-invasive diagnosis and risk stratification
- Author
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Ward, Douglas G., Gordon, Naheema S., Boucher, Rebecca H., Pirrie, Sarah J., Baxter, Laura, Ott, Sascha, Silcock, Lee, Whalley, Celina M., Stockton, Joanne D., Beggs, Andrew D., Griffiths, Mike, Abbotts, Ben, Ijakipour, Hanieh, Latheef, Fathimath N., Robinson, Robert A., White, Andrew J., James, Nicholas D., Zeegers, Maurice P., Cheng, K. K., Bryan, Richard T., Complexe Genetica, RS: NUTRIM - R3 - Respiratory & Age-related Health, and RS: CAPHRI - R5 - Optimising Patient Care
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Adult ,Male ,CARCINOMA ,diagnosis ,BIOMARKERS ,detection ,GUIDELINES ,Risk Assessment ,#blcsm ,Databases, Genetic ,Humans ,RECURRENCE ,Aged ,Aged, 80 and over ,Carcinoma, Transitional Cell ,#BladderCancer ,High-Throughput Nucleotide Sequencing ,DNA ,DNA, Neoplasm ,Sequence Analysis, DNA ,Middle Aged ,mutations ,Prognosis ,urine ,TERT PROMOTER MUTATIONS ,Urinary Bladder Neoplasms ,Mutation ,Translational Science ,Female ,LIQUID BIOPSIES - Abstract
Objectives To develop a focused panel of somatic mutations (SMs) present in the majority of urothelial bladder cancers (UBCs), to investigate the diagnostic and prognostic utility of this panel, and to compare the identification of SMs in urinary cell-pellet (cp)DNA and cell-free (cf)DNA as part of the development of a non-invasive clinical assay. Patients and Methods A panel of SMs was validated by targeted deep-sequencing of tumour DNA from 956 patients with UBC. In addition, amplicon and capture-based targeted sequencing measured mutant allele frequencies (MAFs) of SMs in 314 urine cpDNAs and 153 urine cfDNAs. The association of SMs with grade, stage, and clinical outcomes was investigated by univariate and multivariate Cox models. Concordance between SMs detected in tumour tissue and cpDNA and cfDNA was assessed. Results The panel comprised SMs in 23 genes: TERT (promoter), FGFR3, PIK3CA, TP53, ERCC2, RHOB, ERBB2, HRAS, RXRA, ELF3, CDKN1A, KRAS, KDM6A, AKT1, FBXW7, ERBB3, SF3B1, CTNNB1, BRAF, C3orf70, CREBBP, CDKN2A, and NRAS; 93.5-98.3% of UBCs of all grades and stages harboured >= 1 SM (mean: 2.5 SMs/tumour). RAS mutations were associated with better overall survival (P = 0.04). Mutations in RXRA, RHOB and TERT (promoter) were associated with shorter time to recurrence (P 94% of tumour SMs were detected in both cpDNA and cfDNA. Conclusions SMs are reliably detected in urinary cpDNA and cfDNA. The technical capability to identify very low MAFs is essential to reliably detect UBC, regardless of the use of cpDNA or cfDNA. This 23-gene panel shows promise for the non-invasive diagnosis and risk stratification of UBC.
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- 2019
4. Health-related quality of life around the time of diagnosis in patients with bladder cancer.
- Author
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Yu EY, Nekeman D, Billingham LJ, James ND, Cheng KK, Bryan RT, Wesselius A, and Zeegers MP
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- Adult, Aged, Aged, 80 and over, Cohort Studies, Female, Health Status, Humans, Male, Mental Health, Middle Aged, Surveys and Questionnaires, Time Factors, Quality of Life, Urinary Bladder Neoplasms diagnosis, Urinary Bladder Neoplasms epidemiology, Urinary Bladder Neoplasms pathology, Urinary Bladder Neoplasms psychology
- Abstract
Objectives: To quantify the health-related quality of life (HRQoL) of patients with bladder cancer around the time of diagnosis and to test the hypotheses of a two-factor model for the HRQoL questionnaire QLQ-C30., Methods: From participants in the Bladder Cancer Prognoses Programme, a multicentre cohort study, sociodemographic data were collected using semi-structured face-to-face interviews. Answers to the QLQ-C30 were transformed into a scale from 0 to 100. HRQoL data were analysed in multivariate analyses. The hypothesized two-factor (Physical and Mental Health) domain structure of the QLQ-C30 was also tested with confirmatory factor analyses (CFA)., Results: A total of 1160 participants (78%) completed the questionnaire after initial visual diagnosis and before pathological confirmation. Despite non-muscle-invasive bladder cancer (NMIBC) being associated with a higher HRQoL than carcinoma invading bladder muscle, only the domain Role Functioning was clinically significantly better in patients with NMIBC. Age, gender, bladder cancer stage and comorbidity all had a significant influence on QLQ-C30 scores. The CFA showed an overall good fit of the hypothesized two-factor model., Conclusion: This study identified a baseline reference value for HRQoL for patients with bladder cancer, which allows better evaluation of any changes in HRQoL as disease progresses or after treatment. In addition, a two-factor (Physical and Mental Health) model was developed for the QLQ-C30., (© 2019 The Authors BJU International Published by John Wiley & Sons Ltd on behalf of BJU International.)
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- 2019
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5. Does smoking status influence the prognosis of bladder cancer? A systematic review.
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Aveyard P, Adab P, Cheng KK, Wallace DM, Hey K, and Murphy MF
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- Adult, Aged, Aged, 80 and over, Cohort Studies, Confidence Intervals, Female, Humans, Male, Middle Aged, Neoplasm Recurrence, Local prevention & control, Prognosis, Proportional Hazards Models, Smoking adverse effects, Urinary Bladder Neoplasms prevention & control
- Abstract
Objective: To summarize, in a systematic review, the evidence for the effect of stopping smoking on recurrence, cancer-specific and all cause-mortality among smokers with newly diagnosed bladder cancer., Materials and Methods: Two electronic databases and the reference lists of identified primary studies and reviews were searched. Studies were included if a hazard ratio and its confidence intervals could be extracted. A predefined set of study characteristics was extracted which defined whether studies were giving valid prognostic data on the effects of smoking in reasonably homogenous cohorts. The results of studies were synthesized qualitatively., Results: Fifteen relevant studies were identified; former and current smokers were combined in many studies. Many studies produced information on prognosis that was confounded by the mixing of incident and prevalent cases. Only three studies examined the influence of smoking on prognosis in only incident cases, most of whom had superficial disease. Of these, only one was of high quality. These three studies and the other 12 showed suggestive evidence that continued smoking or a lifetime of smoking constitutes a moderate risk factor for recurrence and death, and that stopping smoking could favourably change this. However, the evidence base for this is weak because of the methodological shortcomings and because most studies' results were not statistically significant. A life-table model showed that if stopping smoking altered the prognosis, the size of the benefit would be clinically worthwhile., Conclusion: There is suggestive evidence that stopping smoking might favourably alter the course of bladder cancer, but this is insufficient for clinicians to inform patients that doing so will improve their prognosis, and for providing specialized services to assist in stopping smoking to patients with bladder cancer.
- Published
- 2002
- Full Text
- View/download PDF
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