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Xu XL, Xu JH, He JQ, Li YH, Cheng H. Novel prognostic nomograms for postoperative patients with oral cavity squamous cell carcinoma in the central region of China. BMC Cancer 2024; 24:730. [PMID: 38877437 PMCID: PMC11177417 DOI: 10.1186/s12885-024-12465-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Accepted: 06/03/2024] [Indexed: 06/16/2024] Open
Abstract
BACKGROUND Oral cavity squamous cell carcinoma (OCSCC) is the most common pathological type in oral tumors. This study intends to construct a novel prognostic nomogram model based on China populations for these resectable OCSCC patients, and then validate these nomograms. METHODS A total of 607 postoperative patients with OCSCC diagnosed between June 2012 and June 2018 were obtained from two tertiary medical institutions in Xinxiang and Zhengzhou. Then, 70% of all the cases were randomly assigned to the training group and the rest to the validation group. The endpoint time was defined as overall survival (OS) and disease-free survival (DFS). The nomograms for predicting the 3-, and 5-year OS and DFS in postoperative OCSCC patients were established based on the independent prognostic factors, which were identified by the univariate analysis and multivariate analysis. A series of indexes were utilized to assess the performance and net benefit of these two newly constructed nomograms. Finally, the discrimination capability of OS and DFS was compared between the new risk stratification and the American Joint Committee on Cancer (AJCC) stage by Kaplan-Meier curves. RESULTS 607 postoperative patients with OCSCC were selected and randomly assigned to the training cohort (n = 425) and validation cohort (n = 182). The nomograms for predicting OS and DFS in postoperative OCSCC patients had been established based on the independent prognostic factors. Moreover, dynamic nomograms were also established for more convenient clinical application. The C-index for predicting OS and DFS were 0.691, 0.674 in the training group, and 0.722, 0.680 in the validation group, respectively. Besides, the calibration curve displayed good consistency between the predicted survival probability and actual observations. Finally, the excellent performance of these two nomograms was verified by the NRI, IDI, and DCA curves in comparison to the AJCC stage system. CONCLUSION The newly established and validated nomograms for predicting OS and DFS in postoperative patients with OCSCC perform well, which can be helpful for clinicians and contribute to clinical decision-making.
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Affiliation(s)
- Xue-Lian Xu
- Department of Radiotherapy Oncology, The First Affiliated Hospital of Xinxiang Medical University, 88 Jiankang Road, Xinxiang, 453100, Henan, China
| | - Jin-Hong Xu
- Department of Otolaryngology, AnYang District Hospital, Anyang, 455000, Henan, China
| | - Jia-Qi He
- Department of Radiotherapy Oncology, Affiliated Cancer Hospital of Zhengzhou University, Zhengzhou, 450000, Henan, China
| | - Yi-Hao Li
- Department of Radiotherapy Oncology, The First Affiliated Hospital of Xinxiang Medical University, 88 Jiankang Road, Xinxiang, 453100, Henan, China
| | - Hao Cheng
- Department of Radiotherapy Oncology, The First Affiliated Hospital of Xinxiang Medical University, 88 Jiankang Road, Xinxiang, 453100, Henan, China.
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Pfuetzenreiter EG, Ferreron GF, Sadka JZ, Souza ABPD, Matos LL, Kowalski LP, Dedivitis RA. Total laryngectomy vs. non-surgical organ preservation in advanced laryngeal cancer: a metanalysis. Braz J Otorhinolaryngol 2024; 90:101404. [PMID: 38461656 PMCID: PMC10940891 DOI: 10.1016/j.bjorl.2024.101404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 12/26/2023] [Accepted: 01/13/2024] [Indexed: 03/12/2024] Open
Abstract
OBJECTIVE To compare the oncological results and the functional outcomes of patients undergoing Total Laryngectomy (TL) with the non-surgical treatment (organ preservation protocol) in the treatment of advanced laryngeal carcinomas through systematic review and meta-analysis. METHODS A literature survey strategy was employed in order to perform a systematic review of the available evidence. Success rate and functional outomes after oncological treatment of patients with advanced laryngeal carcinomas was evaluated through systematic review and metanalysis, comparing TL and organ preservation protocol. RESULTS The surgical treatment was associated with better survival outcomes. When stratifying by T stage, while patients with T4 staging have less risk of mortality with TL, there is no difference between the different treatments for patients with T3 tumors. Surgery is related to a lower chance of recurrence, late dysphagia and feeding tube dependence. CONCLUSION Patients with T4 tumors should undergo TL as their treatment of choice. For patients with T3 tumors, there is no differences on the risk of mortality according to the therapeutic option, however, there is a greater chance of recurrence and dysphagia when surgery is not performed.
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Affiliation(s)
| | | | | | | | - Leandro Luongo Matos
- Universidade de São Paulo (FMUSP), Faculdade de Medicina, Divisão de Cirurgia de Cabeça e Pescoço, São Paulo, SP, Brazil
| | - Luiz Paulo Kowalski
- Universidade de São Paulo (FMUSP), Faculdade de Medicina, Divisão de Cirurgia de Cabeça e Pescoço, São Paulo, SP, Brazil
| | - Rogério Aparecido Dedivitis
- Universidade de São Paulo (FMUSP), Faculdade de Medicina, Divisão de Cirurgia de Cabeça e Pescoço, São Paulo, SP, Brazil
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3
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Pechacova Z, Lohynska R, Pala M, Drbohlavova T, Korinek T. Impact of comorbidity scores and lifestyle factors in curative radiotherapy in laryngeal cancer. Strahlenther Onkol 2023; 199:881-890. [PMID: 37042973 PMCID: PMC10541830 DOI: 10.1007/s00066-023-02072-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 03/05/2023] [Indexed: 04/13/2023]
Abstract
PURPOSE The principal goal of treatment of laryngeal cancer is to eliminate a tumour while preserving laryngeal function with radio(chemo)therapy being the mainstay of treatment. The aim of this report is to present the influence of comorbidities and lifestyle factors on treatment outcomes in our cohort of patients. METHODS During the period 2009-2018, curative radio(chemo)therapy for laryngeal cancer was performed on 189 patients. RESULTS The median OS was 50.8 months, with a mean PFS of 96.5 months, mean LC of 101.4 months and a median follow-up of 38.1 months. Acute and late treatment toxicity grade 3-4 was observed in 39.2% patients and 10.1% patients, respectively. A significant effect on overall survival was confirmed for the baseline PS (performance status), severity of weight loss, baseline haemoglobin values, history of alcohol abuse, marital status and comorbidities according to the Charlson Comorbidity Index, as well as the ACE-27 and ASA scores. CONCLUSIONS In our cohort of patients treated with radio(chemo)therapy for laryngeal cancer, we found good therapeutic results and an acceptable side-effect profile. Statistically significant predictors of overall survival were the baseline PS, weight loss, anaemia, associated comorbidities, history of alcohol abuse and marital status.
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Affiliation(s)
- Zdenka Pechacova
- Institute of Radiation Oncology, First Faculty of Medicine, Charles University and Bulovka University Hospital, Budinova 67/2, 18081, Prague, Czech Republic.
| | - Radka Lohynska
- Department of Oncology, First Faculty of Medicine, Charles University and Thomayer University Hospital, Prague, Czech Republic
| | - Miloslav Pala
- Institute of Radiation Oncology, First Faculty of Medicine, Charles University and Bulovka University Hospital, Budinova 67/2, 18081, Prague, Czech Republic
| | - Tereza Drbohlavova
- Institute of Radiation Oncology, First Faculty of Medicine, Charles University and Bulovka University Hospital, Budinova 67/2, 18081, Prague, Czech Republic
| | - Tomas Korinek
- National Radiation Protection Institute, Prague, Czech Republic
- Military University Hospital, Prague, Czech Republic
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Wang Z, Zhong Y, Zhou Y, Mao F, Zhang X, Wang C, Sun Q. The Prognostic Value of the Age-Adjusted Charlson Comorbidity Index Among the Elderly with Breast Cancer. Clin Interv Aging 2023; 18:1163-1174. [PMID: 37525754 PMCID: PMC10387271 DOI: 10.2147/cia.s414727] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Accepted: 07/20/2023] [Indexed: 08/02/2023] Open
Abstract
Purpose This study aimed to assess the effect of comorbidities on prognosis using the Age-adjusted Charlson Comorbidity Index (ACCI) among the elderly with breast cancer (BC). Methods This study included 745 patients divided into two groups following the ACCI score (≤3 vs >3). Multivariate logistic regression analysis was conducted for all kinds of outcomes, including BC-specific death (BCSD) and non-breast cancer-specific death (NBCSD). The Kaplan-Meier curves were plotted, and survival analysis was conducted for disease-free survival (DFS), overall survival (OS), BC-specific survival (BCSS), and non-BCSS (NBCSS). Results A significantly higher NBCSD was found in the high-score (ACCI > 3) group than in the low-score (ACCI < 3) group (p = 0.032). The multivariate logistic regression analysis revealed ACCI score as an independent affecting factor for all-cause death (hazard ratio [HR] = 0.42, 95% confidence interval [CI]: 0.22-0.83, p = 0.012) and NBCSD (HR = 0.41, 95% CI: 0.20-0.87, p = 0.020). The Kaplan-Meier curves revealed statistical differences only in NBCSS between the two groups (p = 0.039). Subgroup analysis revealed a worse prognosis in the high-score group for OS and NBCSS among hormone receptor-positive participants and those who without undergoing axillary dissection or receiving chemotherapy (all p < 0.05). Multivariate Cox regression analysis revealed ACCI as an independent prognostic predictor for OS (HR = 2.18, 95% CI: 1.22-3.92, p = 0.009) and NBCSS (HR = 2.04, 95% CI: 1.02-4.08, p = 0.044). Conclusion ACCI was indeed an effective indicator of the effects of comorbidities on survival among elderly patients with BC. However, the co-effect from age and comorbidities was not significant enough on cancer-specific prognosis, although it exerted a significant effect on treatments received.
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Affiliation(s)
- Zhe Wang
- Department of Breast Surgery, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100730, People’s Republic of China
| | - Ying Zhong
- Department of Breast Surgery, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100730, People’s Republic of China
| | - Yidong Zhou
- Department of Breast Surgery, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100730, People’s Republic of China
| | - Feng Mao
- Department of Breast Surgery, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100730, People’s Republic of China
| | - Xiaohui Zhang
- Department of Breast Surgery, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100730, People’s Republic of China
| | - Changjun Wang
- Department of Breast Surgery, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100730, People’s Republic of China
| | - Qiang Sun
- Department of Breast Surgery, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100730, People’s Republic of China
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Choi N, Kim J, Yi H, Kim H, Kim TH, Chung MJ, Ji M, Kim Z, Son YI. The use of artificial intelligence models to predict survival in patients with laryngeal squamous cell carcinoma. Sci Rep 2023; 13:9734. [PMID: 37322055 PMCID: PMC10272182 DOI: 10.1038/s41598-023-35627-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 05/21/2023] [Indexed: 06/17/2023] Open
Abstract
Most recent survival prediction has been based on TNM staging, which does not provide individualized information. However, clinical factors including performance status, age, sex, and smoking might influence survival. Therefore, we used artificial intelligence (AI) to analyze various clinical factors to precisely predict the survival of patients with larynx squamous cell carcinoma (LSCC). We included patients with LSCC (N = 1026) who received definitive treatment from 2002 to 2020. Age, sex, smoking, alcohol consumption, Eastern Cooperative Oncology Group (ECOG) performance status, location of tumor, TNM stage, and treatment methods were analyzed using deep neural network (DNN) with multi-classification and regression, random survival forest (RSF), and Cox proportional hazards (COX-PH) model for prediction of overall survival. Each model was confirmed with five-fold cross validation, and performance was evaluated using linear slope, y-intercept, and C-index. The DNN with multi-classification model demonstrated the highest prediction power (1.000 ± 0.047, 0.126 ± 0.762, and 0.859 ± 0.018 for slope, y-intercept, and C-index, respectively), and the prediction survival curve showed the strongest agreement with the validation survival curve, followed by DNN with regression (0.731 ± 0.048, 9.659 ± 0.964, and 0.893 ± 0.017, respectively). The DNN model produced with only T/N staging showed the poorest survival prediction. When predicting the survival of LSCC patients, various clinical factors should be considered. In the present study, DNN with multi-class was shown to be an appropriate method for survival prediction. AI analysis may predict survival more accurately and improve oncologic outcomes.
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Affiliation(s)
- Nayeon Choi
- Department of Otorhinolaryngology, Head and Neck Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, Republic of Korea
| | - Junghyun Kim
- Medical AI Research Center, Research Institute for Future Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, Republic of Korea
| | - Heejun Yi
- Department of Otorhinolaryngology, Head and Neck Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, Republic of Korea
| | - HeeJung Kim
- Department of Otorhinolaryngology, Head and Neck Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, Republic of Korea
| | - Tae Hwan Kim
- Department of Otorhinolaryngology, Head and Neck Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, Republic of Korea
| | - Myung Jin Chung
- Medical AI Research Center, Research Institute for Future Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, Republic of Korea
- Department of Data Convergence and Future Medicine, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Migyeong Ji
- Medical AI Research Center, Research Institute for Future Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, Republic of Korea
| | - Zero Kim
- Medical AI Research Center, Research Institute for Future Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, Republic of Korea.
- Department of Data Convergence and Future Medicine, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.
- Department of Medical Device Management and Research, SAIHST, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, Republic of Korea.
| | - Young-Ik Son
- Department of Otorhinolaryngology, Head and Neck Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, Republic of Korea.
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Matos LL, Sanabria A, Robbins KT, Halmos GB, Strojan P, Ng WT, Takes RP, Angelos P, Piazza C, de Bree R, Ronen O, Guntinas-Lichius O, Eisbruch A, Zafereo M, Mäkitie AA, Shaha AR, Coca-Pelaz A, Rinaldo A, Saba NF, Cohen O, Lopez F, Rodrigo JP, Silver CE, Strandberg TE, Kowalski LP, Ferlito A. Management of Older Patients with Head and Neck Cancer: A Comprehensive Review. Adv Ther 2023; 40:1957-1974. [PMID: 36920746 DOI: 10.1007/s12325-023-02460-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 02/10/2023] [Indexed: 03/16/2023]
Abstract
The projected increase in life expectancy over the next few decades is expected to result in a rise in age-related diseases, including cancer. Head and neck cancer (HNC) is a worldwide health problem with high rates of morbidity and mortality. In this report, we have critically reviewed the literature reporting the management of older patients with HNC. Older adults are more prone to complications and toxicities secondary to HNC treatment, especially those patients who are frail or have comorbidities. Thus, this population should be screened prior to treatment for such predispositions to maximize medical management of comorbidities. Chronologic age itself is not a reason for choosing less intensive treatment for older HNC patients. Whenever possible, also older patients should be treated according to the best standard of care, as nonstandard approaches may result in increased treatment failure rates and mortality. The treatment plan is best established by a multidisciplinary tumor board with shared decision-making with patients and family. Treatment modifications should be considered for those patients who have severe comorbidities, evidence of frailty (low performance status), or low performance status or those who refuse the recommendations of the tumor board.
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Affiliation(s)
- Leandro L Matos
- Department of Head and Neck Surgery, Instituto do Cancer do Estado de São Paulo (ICESP), University of São Paulo Medical School, and Faculdade Israelita de Ciências da Saúde Albert Einstein Medical School, São Paulo, Brazil
| | - Alvaro Sanabria
- Department of Surgery, School of Medicine, Universidad de Antioquia, Centro de Excelencia en Cirugia de Cabeza y Cuello-CEXCA, Medellin, Colombia
| | - K Thomas Robbins
- Division of Otolaryngology, Head and Neck Surgery, Southern Illinois University School of Medicine, Springfield, IL, USA
| | - Gyorgy B Halmos
- Department of Otolaryngology, Head and Neck Surgery, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Primož Strojan
- Department of Radiation Oncology, Institute of Oncology, Ljubljana, Slovenia
| | - Wai Tong Ng
- Department of Clinical Oncology, School of Clinical Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Robert P Takes
- Department of Otolaryngology, Head and Neck Surgery, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Peter Angelos
- Department of Surgery and MacLean Center for Clinical Medical Ethics, The University of Chicago, Chicago, IL, USA
| | - Cesare Piazza
- Unit of Otorhinolaryngology, Head and Neck Surgery, ASST Spedali Civili of Brescia, Department of Surgical and Medical Specialties, Radiological Sciences, and Public Health, School of Medicine, University of Brescia, Brescia, Italy
| | - Remco de Bree
- Department of Head and Neck Surgical Oncology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Ohad Ronen
- Department of Otolaryngology, Head and Neck Surgery, Galilee Medical Center, Affiliated with Azrieli Faculty of Medicine, Bar-Ilan University, Safed, Israel
| | - Orlando Guntinas-Lichius
- Department of Otorhinolaryngology, Institute of Phoniatry/Pedaudiology, Jena University Hospital, Jena, Germany
| | - Avraham Eisbruch
- Department of Radiation Oncology, University of Michigan, Ann Arbor, MI, USA
| | - Mark Zafereo
- Department of Head and Neck Surgery, MD Anderson Cancer Center, Houston, TX, USA
| | - Antti A Mäkitie
- Department of Otorhinolaryngology, Head and Neck Surgery, Faculty of Medicine, University of Helsinki and Helsinki University Hospital, Research Program in Systems Oncology, University of Helsinki, Helsinki, Finland
- Division of Ear, Nose and Throat Diseases, Department of Clinical Sciences, Intervention and Technology, Karolinska Institutet and Karolinska Hospital, Stockholm, Sweden
| | - Ashok R Shaha
- Head and Neck Service, Memorial Sloan-Kettering Cancer Center, New York, NY, USA
| | - Andres Coca-Pelaz
- Department of Otolaryngology, Hospital Universitario Central de Asturias, University of Oviedo, ISPA, IUOPA, CIBERONC, Oviedo, Spain
| | | | - Nabil F Saba
- Department of Hematology and Medical Oncology, The Winship Cancer Institute of Emory University, Atlanta, GA, USA
| | - Oded Cohen
- Department of Otolaryngology, Head and Neck Surgery, Soroka Medical Center, Israel, Affiliated with Ben-Gurion University of the Negev, Sheva, Israel
| | - Fernando Lopez
- Department of Otolaryngology, Hospital Universitario Central de Asturias, University of Oviedo, ISPA, IUOPA, CIBERONC, Oviedo, Spain
| | - Juan P Rodrigo
- Department of Otolaryngology, Hospital Universitario Central de Asturias, University of Oviedo, ISPA, IUOPA, CIBERONC, Oviedo, Spain
| | - Carl E Silver
- Department of Surgery, Albert Einstein College of Medicine, Montefiore Medical Center, Bronx, NY, USA
- Department of Otolaryngology, Head and Neck Surgery, Albert Einstein College of Medicine, Montefiore Medical Center, Bronx, NY, USA
| | - Timo E Strandberg
- University of Helsinki and Helsinki University Hospital, Helsinki, Finland
- Center for Life-Course Health Research, University of Oulu, Oulu, Finland
| | - Luiz Paulo Kowalski
- Department of Head and Neck Surgery, University of São Paulo Medical School, Av. Dr. Enéas de Carvalho Aguiar, 255, 8th Floor, Room 8174, São Paulo, SP, CEP: 05403-000, Brazil.
- Department of Head and Neck Surgery and Otorhinolaryngology, A C Camargo Cancer Center, São Paulo, Brazil.
| | - Alfio Ferlito
- Coordinator of the International Head and Neck Scientific Group, Padua, Italy
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Han C, Khan NI, Mady LJ. Prognosis. Otolaryngol Clin North Am 2023; 56:389-402. [PMID: 37030950 DOI: 10.1016/j.otc.2022.12.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
Abstract
Prognosis is defined as the likely outcome or course of a disease and is the result of a complex interplay between patient and tumor factors. Unfortunately, the prognosis of patients with laryngeal cancer has not changed significantly over the past several decades. However, as our understanding of these patient and tumor factors becomes more nuanced and the resulting treatment options become more precise, there is the potential to improve the prognosis for these patients.
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Liu Y, Gao Z, Peng C, Jiang X. Construction of a 10-gene prognostic score model of predicting recurrence for laryngeal cancer. Eur J Med Res 2022; 27:249. [DOI: 10.1186/s40001-022-00829-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Accepted: 09/26/2022] [Indexed: 11/15/2022] Open
Abstract
AbstractWe constructed a prognostic score (PS) model to predict the recurrence risk in patients previously diagnosed with laryngeal cancer (LC). Here the training dataset, consisting of 82 LC samples, was downloaded from The Cancer Genome Atlas (TCGA). The PS model then divided the LC samples into high- and low-risk groups, which predicted well the survival time of LC in three datasets (TCGA dataset: AUC = 0.899; GSE27020: AUC = 0.719; and GSE25727: AUC = 0.662). Therefore, the PS model based on the 10 genes and its nomogram is proposed to help predict the recurrence risk in patients with LC.
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The Role of ApoE Serum Levels and ApoE Gene Polymorphisms in Patients with Laryngeal Squamous Cell Carcinoma. Biomolecules 2022; 12:biom12081013. [PMID: 35892323 PMCID: PMC9331506 DOI: 10.3390/biom12081013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 07/13/2022] [Accepted: 07/19/2022] [Indexed: 11/17/2022] Open
Abstract
Recent studies have revealed that the inflammatory ApoE effect may play a significant role in various cancer development. However, this effect has still not been analyzed in patients with laryngeal squamous cell carcinoma (LSCC). In the present study, we evaluated two single nucleotide polymorphisms (SNPs) of ApoE (rs7412 and rs429358) and determined their associations with LSCC development and the LSCC patients’ five-year survival rate. Additionally, we analyzed serum ApoE levels using an enzyme-linked immunosorbent assay. A total of 602 subjects (291 histologically verified LSCC patients and 311 healthy controls) were involved in this study. The genotyping was carried out using the real-time PCR. We revealed that ApoE ε3/ε3 was associated with a 1.7-fold higher probability of developing LSCC (p = 0.001), with 1.7-fold increased odds of developing LSCC without metastasis to the lymph nodes (p = 0.002) and with a 2.0-fold increased odds of developing well-differentiated LSCC (p = 0.008), as well as 1.6-fold increased odds of developing poorly differentiated LSCC development (p = 0.012). The ApoE ε2/ε4 and ε3/ε4 genotypes were associated with a 2.9-fold and 1.5-fold decrease in the likelihood of developing LSCC (p = 0.042; p = 0.037, respectively). ApoE ε3/ε4 was found associated with a 2.4-fold decreased likelihood of developing well-differentiated LSCC (p = 0.013). Conclusion: ApoE ε2/ε4 and ε3/ε4 were found to play a protective role in LSCC development, while ApoE ε3/ε3 may have a risk position in LSCC development.
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Zhou S, Zhang XH, Zhang Y, Gong G, Yang X, Wan WH. The Age-Adjusted Charlson Comorbidity Index Predicts Prognosis in Elderly Cancer Patients. Cancer Manag Res 2022; 14:1683-1691. [PMID: 35573259 PMCID: PMC9091471 DOI: 10.2147/cmar.s361495] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Accepted: 04/21/2022] [Indexed: 01/01/2023] Open
Abstract
Purpose The age-adjusted Charlson comorbidity index (ACCI) is a useful measure of comorbidity to standardize the evaluation of elderly patients and has been reported to predict mortality in various cancers. To our best knowledge, no studies have examined the relationship between the ACCI and survival of elderly patients with cancer. Therefore, the primary objective of this study was to investigate the relationship between the ACCI and survival of elderly patients with cancer. Patients and Methods A total of 64 elderly patients (>80 years) with cancer between 2011 and 2021 were enrolled in this study. According to the ACCI, the age-adjusted comorbidity index was calculated by weighting individual comorbidities; patients with ACCI<11 were considered the low-ACCI group, whereas those with ACCI≥11 were considered the high-ACCI group. The correlations between the ACCI score and survival outcomes were statistically analyzed. Results There was a significant difference in overall survival (OS) and progression-free survival (PFS) between the high-ACCI group and the low-ACCI group (P<0.001). The median OS time of the high-ACCI group and the low-ACCI group were 13.9 (10.5–22.0) months and 51.9 (34.1–84.0) months, respectively. The 2-, 3-, and 5-year survival rates of the high-ACCI group were 28.1%, 18.8%, and 4.2%, respectively, whereas the 2-, 3-, and 5-year survival rates of the low-ACCI group were 77.3%, 66.4%, and 39.1%, respectively. Multivariate analysis showed that ACCI was independently associated with OS (HR=1.402, 95% CI: 1.226–1.604, P < 0.05) and PFS (HR=1.353, 95% CI: 1.085–1.688, P = 0.0073). Conclusion The ACCI score is a significant independent predictor of prognosis in elderly patients with cancer.
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Affiliation(s)
- Shi Zhou
- Department of Geriatrics, Jinling Hospital, Medical School of Nanjing University, Nanjing, 21002, Jiangsu, People’s Republic of China
| | - Xing-Hu Zhang
- Department of Geriatrics, Jinling Hospital, Medical School of Nanjing University, Nanjing, 21002, Jiangsu, People’s Republic of China
| | - Yuan Zhang
- Department of Geriatrics, Jinling Hospital, Medical School of Nanjing University, Nanjing, 21002, Jiangsu, People’s Republic of China
| | - Ge Gong
- Department of Geriatrics, Jinling Hospital, Medical School of Nanjing University, Nanjing, 21002, Jiangsu, People’s Republic of China
| | - Xiang Yang
- Department of Geriatrics, Jinling Hospital, Medical School of Nanjing University, Nanjing, 21002, Jiangsu, People’s Republic of China
| | - Wen-Hui Wan
- Department of Geriatrics, Jinling Hospital, Medical School of Nanjing University, Nanjing, 21002, Jiangsu, People’s Republic of China
- Correspondence: Wen-Hui Wan, Department of Geriatrics, Jinling Hospital, Medical School of Nanjing University, Nanjing, 21002, Jiangsu, People’s Republic of China, Tel/Fax +86 25 80862433, Email
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11
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Muscatello L, Piazza C, Peretti G, Marchi F, Bertolin A, Crosetti E, Leopardi G, Lenzi R, Manca L, Matteucci J, Pellini R, Petruzzi G, Presutti L, Sarno A, Succo G, Valerini S, Rizzotto G. Open partial horizontal laryngectomy and adjuvant (chemo)radiotherapy for laryngeal squamous cell carcinoma: results from a multicenter Italian experience. Eur Arch Otorhinolaryngol 2021; 278:4059-4065. [PMID: 33599842 DOI: 10.1007/s00405-021-06651-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 01/27/2021] [Indexed: 12/18/2022]
Abstract
PURPOSE To evaluate the functional and oncologic outcomes of adjuvant (chemo)radiation [(C)RT] after open partial horizontal laryngectomies (OPHLs). METHODS Multicenter retrospective evaluation of 130 patients (116 males, 14 females) submitted between 1995 and 2017 to OPHL Types II and III for laryngeal cancer and receiving adjuvant (C)RT for one or more of the following risk factors at histopathologic examination of the surgical specimen: pT4a and/or > pN2a categories, close/positive resection margins, or presence of both perineural (PNI) and lympho-vascular invasion (LVI). The primary study endpoints were evaluation of the presence of tracheostomy and/or gastrostomy at last follow-up, and calculation of laryngo-esophageal dysfunction-free survival (LEDFS). RESULTS Mean age of the study cohort was 60.8 ± 8.9 years (median, 62; interquartile range [IQR], 13). Mean follow-up was 50.7 ± 39.4 months (range 24-188; median, 38; IQR, 51). Adjuvant therapy consisted of CRT in 53 (41%) patients, and RT alone in 77 (59%). Five-year LEDFS was 85%. Overall survival was 71.5%, while 13% of patients remained tracheostomy- and 3% gastrostomy-dependent at the last follow-up. The only significant variable in predicting survival (p = 0.020) was tracheostomy dependence: it was maintained in 7.5% of subjects after OPHL Type II and in 34% of those submitted to OHPL Type III (p < 0.001). CONCLUSIONS In selected patients affected by advanced laryngeal cancer, OPHLs Type II and III have a relatively good laryngeal safety profile and provide favorable oncologic outcomes even in case of need for adjuvant (C)RT.
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Affiliation(s)
- Luca Muscatello
- Unit of Otorhinolaryngology, Azienda USL Toscana Nord Ovest, Versilia Hospital, Camaiore (LU), Italy
| | - Cesare Piazza
- Department of Otorhinolaryngology, Maxillofacial and Thyroid Surgery, Fondazione IRCCS, National Cancer Institute of Milan, Milan, Italy
- Department of Oncology and Oncohematology, University of Milan, Milan, Italy
| | - Giorgio Peretti
- Department of Otorhinolaryngology, Head and Neck Surgery, University of Genoa, Genoa, Italy
| | - Filippo Marchi
- Department of Otorhinolaryngology, Head and Neck Surgery, University of Genoa, Genoa, Italy
| | - Andy Bertolin
- Otolaryngology Service, Vittorio Veneto Hospital, Vittorio Veneto (TV), Italy
| | - Erika Crosetti
- Head and Neck Oncology Service, Candiolo Cancer Institute, FPO IRCCS, Candiolo (TO), Italy
| | - Gianluca Leopardi
- Unit of Otorhinolaryngology, Azienda USL Toscana Centro, San Giuseppe Hospital, Empoli (FI), Italy
| | - Riccardo Lenzi
- Unit of Otorhinolaryngology, Azienda USL Toscana Nord Ovest, Apuane Hospital, Via E. Mattei 31, 54100, Massa, Italy.
| | - Laura Manca
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
- Department of Mathematics, University of Pisa, Pisa, Italy
| | - Jacopo Matteucci
- Unit of Otorhinolaryngology, Azienda USL Toscana Nord Ovest, Apuane Hospital, Via E. Mattei 31, 54100, Massa, Italy
| | - Raul Pellini
- Department of Otolaryngology, Head and Neck Surgery, IRCCS Regina Elena National Cancer Institute, Rome, Italy
| | - Gerardo Petruzzi
- Department of Otolaryngology, Head and Neck Surgery, IRCCS Regina Elena National Cancer Institute, Rome, Italy
| | - Livio Presutti
- Department of Otolaryngology, Head and Neck Surgery, University of Modena and Reggio Emilia, Policlinico Di Modena, Modena, Italy
| | - Antonio Sarno
- Unit of Otorhinolaryngology, Azienda USL Toscana Centro, Santo Stefano Hospital, Prato, Italy
| | - Giovanni Succo
- Head and Neck Oncology Service, Candiolo Cancer Institute, FPO IRCCS, Candiolo (TO), Italy
| | - Sara Valerini
- Department of Otolaryngology, Head and Neck Surgery, University of Modena and Reggio Emilia, Policlinico Di Modena, Modena, Italy
| | - Giuseppe Rizzotto
- Otolaryngology Service, Vittorio Veneto Hospital, Vittorio Veneto (TV), Italy
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12
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Pan Y, Zhao X, Zhao D, Liu J. Lymph Nodes Dissection in Elderly Patients with T3-T4 Laryngeal Cancer. Clin Interv Aging 2020; 15:2321-2330. [PMID: 33324044 PMCID: PMC7733380 DOI: 10.2147/cia.s283600] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 11/18/2020] [Indexed: 12/12/2022] Open
Abstract
Objective To explore the survival value of lymph node dissection (LND) in elderly patients with T3-T4 laryngeal cancer, analyze the risk factors of lymph node metastasis, and construct a preoperative prediction model. Materials and Methods The study included 996 patients aged ≥65 years with laryngectomy confirmed T3-T4 laryngeal cancer queried from Surveillance, Epidemiology and End Results (SEER) database between 2010 and 2017. Propensity score matching (PSM) was applied to balance the effects of confounding factors. Kaplan–Meier (K–M) analysis and competitive risk model were used to compare the overall survival (OS) and cancer-specific survival (CSS) between LND and no-LND (N-LND) group. Combined with risk factors of multivariate logistic regression, a nomogram was built to predict lymph node metastasis preoperatively. The performance was assessed in the training set and the validation set, and internal validation was assessed. Results Among the cohort, 822 patients underwent LND and 410 patients had positive lymph nodes. The OS and CSS of patients who underwent LND were not better than that of N-LND patients (P>0.05). The prognosis of patients with lymph node metastases was significantly worse than that of negative patients (P<0.05). On multivariate logistic regression, supraglottis cancer, tumor size >5cm and grade 3–4 classification were associated with significantly greater odds of lymph node metastasis. The nomogram showed favorable predictive efficacy and good calibration (in the training cohort C-index=0.700; in the validation cohort C-index=0.721). Conclusion For elderly patients with T3-T4 laryngeal cancer, LND did not bring significant survival values. Supraglottis cancer, tumor size >5cm and grade 3–4 classification were independent risk factors of lymph node metastasis, which means poor prognosis. The nomogram developed was an easy-to-use tool for lymph node prediction.
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Affiliation(s)
- Yafeng Pan
- Department of Otolaryngology, Xiang'an Hospital of Xiamen University, Xiamen, Fujian, People's Republic of China
| | - Xuye Zhao
- Department of Breast and Thyroid Surgery, Xiang'an Hospital of Xiamen University, Xiamen, Fujian, People's Republic of China
| | - Dean Zhao
- Department of Otolaryngology, Xiang'an Hospital of Xiamen University, Xiamen, Fujian, People's Republic of China
| | - Junhua Liu
- Department of Otolaryngology, Xiang'an Hospital of Xiamen University, Xiamen, Fujian, People's Republic of China
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13
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Arends CR, Petersen JF, van der Noort V, Timmermans AJ, Leemans CR, de Bree R, van den Brekel MW, Stuiver MM. Optimizing Survival Predictions of Hypopharynx Cancer: Development of a Clinical Prediction Model. Laryngoscope 2020; 130:2166-2172. [PMID: 31693181 PMCID: PMC7496756 DOI: 10.1002/lary.28345] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 08/26/2019] [Accepted: 09/12/2019] [Indexed: 12/18/2022]
Abstract
OBJECTIVES To develop and validate a clinical prediction model (CPM) for survival in hypopharynx cancer, thereby aiming to improve individualized estimations of survival. METHODS Retrospective cohort study of hypopharynx cancer patients. We randomly split the cohort into a derivation and validation dataset. The model was fitted on the derivation dataset and validated on the validation dataset. We used a Cox's proportional hazard model and least absolute shrinkage and selection operator (LASSO) selection. Performance (discrimination and calibration) of the CPM was tested. RESULTS The final model consisted of gender, subsite, TNM classification, Adult Comorbidity Evaluation-27 score (ACE27), body mass index (BMI), hemoglobin, albumin, and leukocyte count. Of these, TNM classification, ACE27, BMI, hemoglobin, and albumin had independent significant associations with survival. The C Statistic was 0.62 after validation. The model could significantly identify clinical risk groups. CONCLUSIONS ACE27, BMI, hemoglobin, and albumin are independent predictors of overall survival. The identification of high-risk patients can be used in the counseling process and tailoring of treatment strategy or follow-up. LEVEL OF EVIDENCE 4 Laryngoscope, 130:2166-2172, 2020.
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Affiliation(s)
- Coralie R. Arends
- Department of Head and Neck Oncology and SurgeryThe Netherlands Cancer InstituteAmsterdamThe Netherlands
| | - Japke F. Petersen
- Department of Head and Neck Oncology and SurgeryThe Netherlands Cancer InstituteAmsterdamThe Netherlands
| | | | - Adriana J. Timmermans
- Department of Head and Neck Oncology and SurgeryThe Netherlands Cancer InstituteAmsterdamThe Netherlands
- Department of Head and Neck Oncology and SurgeryAmsterdam UMCAmsterdamThe Netherlands
| | - C. René Leemans
- Department of Head and Neck Oncology and SurgeryAmsterdam UMCAmsterdamThe Netherlands
| | - Remco de Bree
- Department of Head and Neck Surgical OncologyUniversity Medical Center UtrechtThe Netherlands
| | - Michiel W.M. van den Brekel
- Department of Head and Neck Oncology and SurgeryThe Netherlands Cancer InstituteAmsterdamThe Netherlands
- Institute of Phonetic SciencesAmsterdam Center of Language and Communication, University of AmsterdamAmsterdamThe Netherlands
- Department of Oral and Maxillofacial SurgeryAcademic Medical CenterAmsterdamThe Netherlands
| | - Martijn M. Stuiver
- Department of Head and Neck Oncology and SurgeryThe Netherlands Cancer InstituteAmsterdamThe Netherlands
- Department of Clinical Epidemiology, Biostatistics, and BioinformaticsAmsterdam UMCAmsterdamThe Netherlands
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14
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Delirium Rates in Advanced Cancer Patients Admitted to Different Palliative Care Settings: Does It Make the Difference? J Palliat Med 2020; 23:1227-1232. [DOI: 10.1089/jpm.2019.0414] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
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15
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Zapata I, Alvarez M, Hidalgo R, Pajares B, Garcia-Anaya MJ, Toledo MD, Trigo JM, Lupiañez-Perez Y, Medina JA, Jaime Gomez-Millan J. Causes of death in patients with locally advanced head and neck cancer treated with radiotherapy and systemic therapy. BMC Cancer 2019; 19:1241. [PMID: 31864338 PMCID: PMC6925882 DOI: 10.1186/s12885-019-6427-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Accepted: 12/03/2019] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND To investigate the incidence of non-cancer mortalities and prognostic factors associated with competitive causes of death in a homogeneous cohort of patients with locally advanced head and neck cancer treated with radiotherapy and systemic treatment. METHODS This study included 284 patients with locally advanced head and neck cancer treated with radiotherapy and systemic treatment between 2005 and 2017. The cumulative incidence of death associated with tumour, second tumours, treatment, side effects and comorbidity was calculated. A Fine and Gray regression model was used to investigate factors associated with cancer and competitive mortality. RESULTS The cumulative incidence of tumoral death at 5 and 10 years were 35 and 47% respectively, whereas the cumulative incidence of competitive mortality were 10 and 12% respectively. In the multivariate analysis, age and comorbidity were independent factors for non-cancer mortality. Patients with a high risk of non-cancer mortality presented a cumulative incidence of 17.3% at 5 years and 18.4% at 10 years. CONCLUSIONS This study demonstrated a high incidence of competing mortality in older patients with comorbidities. Non-cancer deaths should be considered when selecting patients for combination therapies and in the study design ofclinical trials.
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Affiliation(s)
- I Zapata
- Radiation Oncology Department, Hospital Universitario Virgen de la Victoria, Campus Teatinos s/n., 29010, Malaga, Spain
| | - M Alvarez
- Laboratorio de biología molecular del cancer, centro de investigaciones medico-sanitarias (CIMES), Universidad de Málaga, Malaga, Spain.,Instituto de investigación biomédica de Malaga, Campus Teatinos s/n., 29010, Malaga, Spain.,Pathology Department, Hospital Universitario Virgen de la Victoria, Campus Teatinos s/n., 29010, Malaga, Spain
| | - R Hidalgo
- Servicio central de Informatica, Universidad de Malaga, Malaga, Spain
| | - B Pajares
- Medical Oncology Department, Hospital Universitario Virgen de la Victoria, Campus Teatinos s/n, 29010, Malaga, Spain
| | - M J Garcia-Anaya
- Radiation Oncology Department, Hospital Universitario Virgen de la Victoria, Campus Teatinos s/n., 29010, Malaga, Spain
| | - M D Toledo
- Radiation Oncology Department, Hospital Universitario Virgen de la Victoria, Campus Teatinos s/n., 29010, Malaga, Spain
| | - J M Trigo
- Medical Oncology Department, Hospital Universitario Virgen de la Victoria, Campus Teatinos s/n, 29010, Malaga, Spain
| | - Y Lupiañez-Perez
- Radiation Oncology Department, Hospital Universitario Virgen de la Victoria, Campus Teatinos s/n., 29010, Malaga, Spain
| | - J A Medina
- Radiation Oncology Department, Hospital Universitario Virgen de la Victoria, Campus Teatinos s/n., 29010, Malaga, Spain
| | - J Jaime Gomez-Millan
- Radiation Oncology Department, Hospital Universitario Virgen de la Victoria, Campus Teatinos s/n., 29010, Malaga, Spain. .,Instituto de investigación biomédica de Malaga, Campus Teatinos s/n., 29010, Malaga, Spain.
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16
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Fong PY, Tan SH, Lim DWT, Tan EH, Ng QS, Sommat K, Tan DSW, Ang MK. Association of clinical factors with survival outcomes in laryngeal squamous cell carcinoma (LSCC). PLoS One 2019; 14:e0224665. [PMID: 31747406 PMCID: PMC6867599 DOI: 10.1371/journal.pone.0224665] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Accepted: 10/18/2019] [Indexed: 12/18/2022] Open
Abstract
AIM Treatment strategies in laryngeal squamous cell cancer (LSCC) straddle the need for long term survival and tumor control as well as preservation of laryngeal function as far as possible. We sought to identify prognostic factors affecting LSCC outcomes in our population. METHODS Clinical characteristics, treatments and survival outcomes of patients with LSCC were analysed. Baseline comorbidity data was collected and age-adjusted Charlson Comorbidity Index (aCCI) was calculated. Outcomes of overall survival (OS), progression-free survival (PFS) and laryngectomy-free survival (LFS) were evaluated. RESULTS Two hundred and fifteen patients were included, 170 (79%) underwent primary radiation/ chemoradiation and the remainder upfront surgery with adjuvant therapy where indicated. The majority of patients were male, Chinese and current/ex-smokers. Presence of comorbidity was common with median aCCI of 3. Median OS was 5.8 years. On multivariable analyses, high aCCI and advanced nodal status were associated with inferior OS (HR 1.24 per one point increase in aCCI, P<0.001 and HR 3.52; p<0.001 respectively), inferior PFS (HR 1.14; p = 0.007 and HR 3.23; p<0.001 respectively) and poorer LFS (HR 1.19; p = 0.001 and HR 2.95; p<0.001 respectively). Higher tumor (T) stage was associated with inferior OS and LFS (HR 1.61; p = 0.02 and HR 1.91; p = 0.01 respectively). CONCLUSION In our Asian population, the presence of comorbidities and high nodal status were associated with inferior OS, PFS and LFS whilst high T stage was associated with inferior LFS and OS.
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Affiliation(s)
- Pei Yuan Fong
- Division of Medical Oncology, National Cancer Centre, Singapore
| | - Sze Huey Tan
- Division of Clinical Trials and Epidemiological Sciences, National Cancer Centre, Singapore
| | | | - Eng Huat Tan
- Division of Medical Oncology, National Cancer Centre, Singapore
| | - Quan Sing Ng
- Division of Medical Oncology, National Cancer Centre, Singapore
| | - Kiattisa Sommat
- Division of Radiation Oncology, National Cancer Centre, Singapore
| | | | - Mei Kim Ang
- Division of Medical Oncology, National Cancer Centre, Singapore
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