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Xiao Y, Xiao L, Zhang Y, Xu X, Guan X, Guo Y, Shen Y, Lei X, Dou Y, Yu J. Prediction of tumor lysis syndrome in childhood acute lymphoblastic leukemia based on machine learning models: a retrospective study. Front Oncol 2024; 14:1337295. [PMID: 38515564 PMCID: PMC10955075 DOI: 10.3389/fonc.2024.1337295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Accepted: 02/19/2024] [Indexed: 03/23/2024] Open
Abstract
Background Tumor lysis syndrome (TLS) often occurs early after induction chemotherapy for acute lymphoblastic leukemia (ALL) and can rapidly progress. This study aimed to construct a machine learning model to predict the risk of TLS using clinical indicators at the time of ALL diagnosis. Methods This observational cohort study was conducted at the National Clinical Research Center for Child Health and Disease. Data were collected from pediatric ALL patients diagnosed between December 2008 and December 2021. Four machine learning models were constructed using the Least Absolute Shrinkage and Selection Operator (LASSO) to select key clinical indicators for model construction. Results The study included 2,243 pediatric ALL patients, and the occurrence of TLS was 8.87%. A total of 33 indicators with missing values ≤30% were collected, and 12 risk factors were selected through LASSO regression analysis. The CatBoost model with the best performance after feature screening was selected to predict the TLS of ALL patients. The CatBoost model had an AUC of 0.832 and an accuracy of 0.758. The risk factors most associated with TLS were the absence of potassium, phosphorus, aspartate transaminase (AST), white blood cell count (WBC), and urea levels. Conclusion We developed the first TLS prediction model for pediatric ALL to assist clinicians in risk stratification at diagnosis and in developing personalized treatment protocols. This study is registered on the China Clinical Trials Registry platform (ChiCTR2200060616). Clinical trial registration https://www.chictr.org.cn/, identifier ChiCTR2200060616.
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Affiliation(s)
- Yao Xiao
- Department of Hematology and Oncology, Children’s Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Chongqing Key Laboratory of Pediatrics, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China
| | - Li Xiao
- Department of Hematology and Oncology, Children’s Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Chongqing Key Laboratory of Pediatrics, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China
| | - Yang Zhang
- College of Medical Informatics, Chongqing Medical University, Chongqing, China
| | - Ximing Xu
- Big Data Engineering Center for Children’s Medical Care, Children’s Hospital of Chongqing Medical University, Chongqing, China
| | - Xianmin Guan
- Department of Hematology and Oncology, Children’s Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Chongqing Key Laboratory of Pediatrics, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China
| | - Yuxia Guo
- Department of Hematology and Oncology, Children’s Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Chongqing Key Laboratory of Pediatrics, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China
| | - Yali Shen
- Department of Hematology and Oncology, Children’s Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Chongqing Key Laboratory of Pediatrics, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China
| | - XiaoYing Lei
- Department of Hematology and Oncology, Children’s Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Chongqing Key Laboratory of Pediatrics, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China
| | - Ying Dou
- Department of Hematology and Oncology, Children’s Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Chongqing Key Laboratory of Pediatrics, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China
| | - Jie Yu
- Department of Hematology and Oncology, Children’s Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Chongqing Key Laboratory of Pediatrics, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China
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Machado B, Barroso T, Godinho J. Impact of Diagnostic and Treatment Delays on Survival and Treatment-Related Toxicities in Portuguese Patients With Head and Neck Cancer. Cureus 2024; 16:e53039. [PMID: 38410318 PMCID: PMC10895551 DOI: 10.7759/cureus.53039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/26/2024] [Indexed: 02/28/2024] Open
Abstract
INTRODUCTION Delays in diagnosis and initiation of treatment have a negative impact on the prognosis and survival of head and neck cancer (HNC) patients. These delays also involve more intensive treatments with greater toxicity, dysfunction, and morbidity. METHODS This was a retrospective observational study with patients diagnosed with HNC between January 1, 2018, and December 31, 2021. The main objective was to estimate whether the time to diagnosis (TD) and time until treatment initiation (TIT) translated into changes in the patient's overall survival (OS). Multivariate data analysis was performed with the Cox regression model. Significance was considered for p<0.05. RESULTS A total of 139 patients were included in this study. Median TD was 126 days and median TIT was 43 days. No association between TD, TIT, treatment toxicity, and OS was found. Being a smoker was associated with a longer TD (p=0.05, hazard ratios {HR}=1.01). TIT was significantly shorter in higher grades (p=0.03, HR=0.57) and during coronavirus disease 2019 (COVID-19) (p=0.04, HR=0.57), but higher in larger disease (tumor {T}) (p=0.04, HR=1.39). A higher T (p=0.01, HR=2.67) and lymph node metastasis (nodes {N}) (p=0.02, HR=2.24) were identified as risk factors with a negative impact on OS, whereas grade was positively correlated (p=0.05, HR=0.32). CONCLUSIONS Even though there was no correlation between TD and TIT, and OS, action still needs to be taken to shorten these times. T and N remain negative predictive prognostic markers of HNC.
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Affiliation(s)
- Bárbara Machado
- Medical Oncology, Centro Hospitalar de Entre Douro e Vouga, Santa Maria da Feira, PRT
| | - Tiago Barroso
- Medical Oncology, Centro Hospitalar Universitário Lisboa Norte, Lisbon, PRT
| | - Joana Godinho
- Medical Oncology, Centro Hospitalar de Entre Douro e Vouga, Santa Maria da Feira, PRT
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Boguszewicz Ł, Bieleń A, Ciszek M, Skorupa A, Mrochem-Kwarciak J, Składowski K, Sokół M. Metabolomic Insight into Implications of Induction Chemotherapy Followed by Concomitant Chemoradiotherapy in Locally Advanced Head and Neck Cancer. Int J Mol Sci 2023; 25:188. [PMID: 38203359 PMCID: PMC10779362 DOI: 10.3390/ijms25010188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 12/15/2023] [Accepted: 12/20/2023] [Indexed: 01/12/2024] Open
Abstract
The present study compares two groups of locally advanced patients with head and neck squamous cell carcinoma (LA-HNSCC) undergoing concurrent chemoradiotherapy (cCHRT), specifically those for whom it is a first-line treatment and those who have previously received induction chemotherapy (iCHT). The crucial question is whether iCHT is a serious burden during subsequent treatment for LA-HNSCC and how iCHT affects the tolerance to cCHRT. Of the 107 LA-HNSCC patients, 54 received cisplatin-based iCHT prior to cCHRT. The patients were clinically monitored at weekly intervals from the day before until the completion of the cCHRT. The 843 blood samples were collected and divided into two aliquots: for laboratory blood tests and for nuclear magnetic resonance (NMR) spectroscopy (a Bruker 400 MHz spectrometer). The NMR metabolites and the clinical parameters from the laboratory blood tests were analyzed using orthogonal partial least squares analysis (OPLS) and the Mann-Whitney U test (MWU). After iCHT, the patients begin cCHRT with significantly (MWU p-value < 0.05) elevated blood serum lipids, betaine, glycine, phosphocholine, and reticulocyte count, as well as significantly lowered NMR inflammatory markers, serine, hematocrit, neutrophile, monocyte, red blood cells, hemoglobin, and CRP. During cCHRT, a significant increase in albumin and psychological distress was observed, as well as a significant decrease in platelet, N-acetyl-cysteine, tyrosine, and phenylalanine, in patients who received iCHT. Importantly, all clinical symptoms (except the decreased platelets) and most metabolic alterations (except for betaine, serine, tyrosine, glucose, and phosphocholine) resolve until the completion of cCHRT. In conclusion, iCHT results in hematological toxicity, altered lipids, and one-carbon metabolism, as well as downregulated inflammation, as observed at the beginning and during cCHRT. However, these complications are temporary, and most of them resolve at the end of the treatment. This suggests that iCHT prior to cCHRT does not pose a significant burden and should be considered as a safe treatment option for LA-HNSCC.
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Affiliation(s)
- Łukasz Boguszewicz
- Department of Medical Physics, Maria Sklodowska-Curie National Research Institute of Oncology, Gliwice Branch, 44-102 Gliwice, Poland; (M.C.); (A.S.); (M.S.)
| | - Agata Bieleń
- 1st Radiation and Clinical Oncology Department, Maria Sklodowska-Curie National Research Institute of Oncology, Gliwice Branch, 44-102 Gliwice, Poland; (A.B.)
| | - Mateusz Ciszek
- Department of Medical Physics, Maria Sklodowska-Curie National Research Institute of Oncology, Gliwice Branch, 44-102 Gliwice, Poland; (M.C.); (A.S.); (M.S.)
| | - Agnieszka Skorupa
- Department of Medical Physics, Maria Sklodowska-Curie National Research Institute of Oncology, Gliwice Branch, 44-102 Gliwice, Poland; (M.C.); (A.S.); (M.S.)
| | - Jolanta Mrochem-Kwarciak
- Analytics and Clinical Biochemistry Department, Maria Sklodowska-Curie National Research Institute of Oncology, Gliwice Branch, 44-102 Gliwice, Poland;
| | - Krzysztof Składowski
- 1st Radiation and Clinical Oncology Department, Maria Sklodowska-Curie National Research Institute of Oncology, Gliwice Branch, 44-102 Gliwice, Poland; (A.B.)
| | - Maria Sokół
- Department of Medical Physics, Maria Sklodowska-Curie National Research Institute of Oncology, Gliwice Branch, 44-102 Gliwice, Poland; (M.C.); (A.S.); (M.S.)
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Hentzen S, Meirson T, Koehn K, Goodman A, Chakraborty R, Sborov D, Rubinstein S, Mohyuddin GR. Attrition and withdrawal in multiple myeloma randomized controlled trials: A systematic review. Eur J Haematol 2023. [PMID: 37382045 DOI: 10.1111/ejh.14032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 06/15/2023] [Accepted: 06/16/2023] [Indexed: 06/30/2023]
Abstract
OBJECTIVES Patients with multiple myeloma (MM) enrolled in randomized control trials (RCTs) discontinue treatment for various reasons; however, no prior study has analyzed reasons for discontinuation. We performed a systematic review of MM RCTs to investigate reasons for treatment discontinuation, imbalances between trial cohorts, and reporting practices. METHODS A comprehensive search for RCTs in MM from 2015 to 2021 identified 45 studies meeting inclusion criteria. RESULTS Of 21 236 randomized patients, 10 161 (47.8%) discontinued therapy by primary endpoint ascertainment. Causes of discontinuation included progression (n = 4790; 22.6% of randomized patients); toxicity (n = 2569; 12.1%); patient/physician withdrawal (n = 1200; 5.7%) and death (n = 495; 2.3%). Of randomized patients, 20 914 (98.5%) were included in the RCT analysis. Imbalances of attrition, defined as trials with greater than 5% absolute difference in discontinuation rate for reasons other than death, progression, and toxicity between intervention and control arms, were found in 11 (24.4%) studies. CONCLUSIONS Although progression is the most common reason for RCT treatment discontinuation in patients with MM, over 10% discontinued due to toxicity. Furthermore, 24.4% of trials showed substantial imbalances between trial cohorts; raising concern for informative censoring and emphasizes the importance of detailed characterization of withdrawal in MM RCTs.
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Affiliation(s)
- Stijn Hentzen
- Department of Internal Medicine, Kansas University Medical Center, Kansas City, Kansas, USA
| | | | - Kelly Koehn
- Department of Internal Medicine, Kansas University Medical Center, Kansas City, Kansas, USA
| | - Aaron Goodman
- Division of Hematology, University of California San Diego, La Jolla, California, USA
| | | | - Douglas Sborov
- Division of Hematology and Hematological Malignancies, Huntsman Cancer Institute at the University of Utah, Salt Lake City, Utah, USA
| | - Samuel Rubinstein
- Division of Hematology, Lineberger Comprehensive Cancer Center at the University of North Carolina, Chapel Hill, North Carolina, USA
| | - Ghulam Rehman Mohyuddin
- Division of Hematology and Hematological Malignancies, Huntsman Cancer Institute at the University of Utah, Salt Lake City, Utah, USA
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Ponomareva IV, Tsiring DA, Pakhomova YN. [The psychological factors of renunciation of antitumoral therapy by women with breast cancer (international publications review)]. Probl Sotsialnoi Gig Zdravookhranenniiai Istor Med 2023; 31:222-226. [PMID: 37129395 DOI: 10.32687/0869-866x-2023-31-2-223-226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 10/29/2022] [Indexed: 05/03/2023]
Abstract
The article presents analytical review of studies considering problem of patient refusal from antitumoral treatment, in particular of women with breast cancer. The analysis of main results of empirical studies describes factors associated with patient refusal from treatment. Among factors affecting decision making related to patient voluntarily refuse of treatment are toxicity of treatment (nausea and vomiting), senile age, disease stage, availability and type of medical insurance, characteristics of family status. Besides objective factors, such subjective factors as beliefs, values of patients are described. The deficiency of research studies concerning psychological factors of patient refusal of antitumoral treatment is established. However, patient loyalty to antitumoral treatment plays decisive role in prognosis of survival and favorable course of disease. In connection with that, studies covering such areas as psychological characteristics of personality of patients refusing of antitumoral treatment, verification of psychological factors of this voluntary refusal are required in order to organize continuum of oncological care of patients, their psychological maintenance and increasing of commitment to treatment.
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Affiliation(s)
- I V Ponomareva
- The Federal State Autonomous Educational Institution of Higher Education "The Tomsk National Research State University", 634050, Tomsk, Russia,
- The Ural Branch of the Federal State Budget Educational Institution of Higher Education "The Financial University under the Government of the Russian Federation", 454084, Chelyabinsk, Russia
- The Federal State Budget Educational Institution of Higher Education "The Chelyabinsk State University", 454084, Chelyabinsk, Russia
| | - D A Tsiring
- The Federal State Autonomous Educational Institution of Higher Education "The Tomsk National Research State University", 634050, Tomsk, Russia
- The Ural Branch of the Federal State Budget Educational Institution of Higher Education "The Financial University under the Government of the Russian Federation", 454084, Chelyabinsk, Russia
| | - Ya N Pakhomova
- The Ural Branch of the Federal State Budget Educational Institution of Higher Education "The Financial University under the Government of the Russian Federation", 454084, Chelyabinsk, Russia
- The Federal State Budget Educational Institution of Higher Education "The Chelyabinsk State University", 454084, Chelyabinsk, Russia
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Morse RT, Ganju RG, Gan GN, Cao Y, Neupane P, Kakarala K, Shnayder Y, Lominska CE. Sarcopenia and Treatment Toxicity in Older Adults Undergoing Chemoradiation for Head and Neck Cancer: Identifying Factors to Predict Frailty. Cancers (Basel) 2022; 14:cancers14092094. [PMID: 35565223 PMCID: PMC9103923 DOI: 10.3390/cancers14092094] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Revised: 04/15/2022] [Accepted: 04/17/2022] [Indexed: 01/09/2023] Open
Abstract
This study was performed to identify treatment related toxicities in older adults undergoing concurrent chemoradiotherapy for head and neck cancer and nutritional and skeletal muscle measures that might identify frailty. Imaging analysis was done with the following skeletal muscle measurements: skeletal muscle index (SMI), skeletal muscle density (SMD), and skeletal muscle gauge (SMG). Patients were dichotomized by age into younger (<70 years old, 221 patients) and older age groups (≥70 years old, 51 patients). Low SMI was more common in older patients (86.7%) compared to younger patients (51.7%, p < 0.01), as were low SMD (57.8% vs. 37.3%, p = 0.012) and low SMG (76.1% vs. 44.2%, p < 0.01), despite having similar BMIs (27.3 kg/m2 versus 27.7 kg/m2, p = 0.71). Older patients were significantly more likely to experience chemotherapy toxicity than younger patients (54.9% versus 32.3%, p < 0.01). On multivariate analysis age (p < 0.01), current smoking status (p < 0.01), and low SMI (p < 0.01) remained as significant predictors for missed chemotherapy cycles or discontinuation. Older patients were more likely to require ≥5-day radiation breaks than younger patients (27.5% versus 8.6%, p < 0.01). On multivariate analysis, age (p < 0.01), low albumin status (p = 0.03), and low SMI (p = 0.04) were identified as predictors of prolonged radiation treatment breaks. Based on the results of our study, sarcopenia may be used as an additional marker for frailty alongside traditional performance status scales.
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Affiliation(s)
- Ryan T. Morse
- Department of Radiation Oncology, UNC Lineberger Comprehensive Cancer Center, University of North Carolina Hospital, Chapel Hill, NC 27514, USA
- Correspondence:
| | - Rohit G. Ganju
- Department of Radiation Oncology, Wellstar Health System, Marietta, GA 30067, USA;
| | - Gregory N. Gan
- Department of Radiation Oncology, University of Kansas Cancer Center, Kansas City, KS 66160, USA; (G.N.G.); (Y.C.); (C.E.L.)
| | - Ying Cao
- Department of Radiation Oncology, University of Kansas Cancer Center, Kansas City, KS 66160, USA; (G.N.G.); (Y.C.); (C.E.L.)
| | - Prakash Neupane
- Department of Medical Oncology, University of Kansas Cancer Center, Kansas City, KS 66160, USA;
| | - Kiran Kakarala
- Department of Otolaryngology, University of Kansas Cancer Center, Kansas City, KS 66160, USA; (K.K.); (Y.S.)
| | - Yelizaveta Shnayder
- Department of Otolaryngology, University of Kansas Cancer Center, Kansas City, KS 66160, USA; (K.K.); (Y.S.)
| | - Christopher E. Lominska
- Department of Radiation Oncology, University of Kansas Cancer Center, Kansas City, KS 66160, USA; (G.N.G.); (Y.C.); (C.E.L.)
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Nielsen RL, Wolthers BO, Helenius M, Albertsen BK, Clemmensen L, Nielsen K, Kanerva J, Niinimäki R, Frandsen TL, Attarbaschi A, Barzilai S, Colombini A, Escherich G, Aytan-Aktug D, Liu HC, Möricke A, Samarasinghe S, van der Sluis IM, Stanulla M, Tulstrup M, Yadav R, Zapotocka E, Schmiegelow K, Gupta R. Can Machine Learning Models Predict Asparaginase-associated Pancreatitis in Childhood Acute Lymphoblastic Leukemia. J Pediatr Hematol Oncol 2022; 44:e628-e636. [PMID: 35226426 PMCID: PMC8946594 DOI: 10.1097/mph.0000000000002292] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Accepted: 06/21/2021] [Indexed: 11/26/2022]
Abstract
Asparaginase-associated pancreatitis (AAP) frequently affects children treated for acute lymphoblastic leukemia (ALL) causing severe acute and persisting complications. Known risk factors such as asparaginase dosing, older age and single nucleotide polymorphisms (SNPs) have insufficient odds ratios to allow personalized asparaginase therapy. In this study, we explored machine learning strategies for prediction of individual AAP risk. We integrated information on age, sex, and SNPs based on Illumina Omni2.5exome-8 arrays of patients with childhood ALL (N=1564, 244 with AAP 1.0 to 17.9 yo) from 10 international ALL consortia into machine learning models including regression, random forest, AdaBoost and artificial neural networks. A model with only age and sex had area under the receiver operating characteristic curve (ROC-AUC) of 0.62. Inclusion of 6 pancreatitis candidate gene SNPs or 4 validated pancreatitis SNPs boosted ROC-AUC somewhat (0.67) while 30 SNPs, identified through our AAP genome-wide association study cohort, boosted performance (0.80). Most predictive features included rs10273639 (PRSS1-PRSS2), rs10436957 (CTRC), rs13228878 (PRSS1/PRSS2), rs1505495 (GALNTL6), rs4655107 (EPHB2) and age (1 to 7 y). Second AAP following asparaginase re-exposure was predicted with ROC-AUC: 0.65. The machine learning models assist individual-level risk assessment of AAP for future prevention trials, and may legitimize asparaginase re-exposure when AAP risk is predicted to be low.
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Affiliation(s)
- Rikke L. Nielsen
- Departments of Health Technology
- Department of Pediatrics and Adolescent Medicine, University Hospital Rigshospitalet
- Sino-Danish Center for Education and Research, University of Chinese Academy of Sciences, Huairou, China
| | - Benjamin O. Wolthers
- Department of Pediatrics and Adolescent Medicine, University Hospital Rigshospitalet
| | | | - Birgitte K. Albertsen
- Department of Pediatrics and Adolescent Medicine, Aarhus University Hospital, Aarhus, Denmark
| | - Line Clemmensen
- Department of Applied Mathematics and Computer Science, Kgs. Lyngby
| | - Kasper Nielsen
- Center for Biological Sequence Analysis, Technical University of Denmark
| | - Jukka Kanerva
- Children’s Hospital, Helsinki University Central Hospital, University of Helsinki, Helsinki
| | - Riitta Niinimäki
- Oulu University Hospital, Department of Children and Adolescents, and University of Oulu, PEDEGO Research Unit, Oulu, Finland
| | - Thomas L. Frandsen
- Department of Pediatrics and Adolescent Medicine, University Hospital Rigshospitalet
| | - Andishe Attarbaschi
- Department of Pediatric Hematology and Oncology, St Anna Children’s Hospital and Department of Pediatric and Adolescent Medicine, Medical University of Vienna, Wien, Austria
| | - Shlomit Barzilai
- Pediatric Hematology and Oncology, Schneider Children’s Medical Center of Israel, Petah-Tikva, Israel and Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv-Yafo, Israel
| | - Antonella Colombini
- Department of Pediatrics, Ospedale San Gerardo, University of Milano-Bicocca, Fondazione MBBM, Monza, Italy
| | - Gabriele Escherich
- Clinic of Pediatric Hematology and Oncology, University Medical Center Eppendorf, Hamburg
| | | | - Hsi-Che Liu
- Division of Pediatric Hematology-Oncology, Mackay Memorial Hospital, Taipei, Taiwan
| | - Anja Möricke
- Department of Pediatrics, Christian-Albrechts-University Kiel and University Medical Center Schleswig-Holstein, Kiel
| | | | - Inge M. van der Sluis
- Dutch Childhood Oncology Group, The Hague and Princess Máxima Center for Pediatric Oncology, Utrecht, The Netherlands
| | - Martin Stanulla
- Department of Pediatric Hematology and Oncology, Hannover Medical School, Hannover, Germany
| | - Morten Tulstrup
- Department of Pediatrics and Adolescent Medicine, University Hospital Rigshospitalet
| | - Rachita Yadav
- Center for Biological Sequence Analysis, Technical University of Denmark
| | - Ester Zapotocka
- Department of Pediatric Hematology/Oncology, University Hospital Motol, Prague, Czech Republic
| | - Kjeld Schmiegelow
- Department of Pediatrics and Adolescent Medicine, University Hospital Rigshospitalet
- Institute of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen
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Sattar S, Haase K, Tejero I, Bradley C, Mariano C, Kilgour H, Verma R, Amir E, Alibhai S. The Impact of Cognitive Impairment on Treatment Toxicity, Treatment Completion, and Survival among Older Adults Receiving Chemotherapy: A Systematic Review. Cancers (Basel) 2022; 14:1582. [PMID: 35326733 DOI: 10.3390/cancers14061582] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 03/09/2022] [Accepted: 03/15/2022] [Indexed: 12/11/2022] Open
Abstract
Simple Summary Although cognitive impairment is common among older adults, the relationship between cognitive impairment and its effect on cancer outcomes is unclear. We conducted a systematic review of the literature to examine how toxicity risk, treatment completion, and survival may be impacted by chemotherapy in patients exhibiting evidence of cognitive impairment. Despite an absence of clear parallels between the severity of cognitive impairment and cancer outcomes, we found statistically significant relationships with survival in several studies and with toxicity in one study. An overall lack of robust evidence indicates the need for further research on the role of cognitive impairment in predicting survival, treatment completion, and toxicity among older adults receiving chemotherapy. Abstract Cognitive impairment (CI) is common among older adults with cancer, but its effect on cancer outcomes is not known. This systematic review sought to identify research investigating clinical endpoints (toxicity risk, treatment completion, and survival) of chemotherapy treatment in those with baseline CI. A systematic search of five databases (inception to March 2021) was conducted. Eligible studies included randomized trials, prospective studies, and retrospective studies in which the sample or a subgroup were older adults (aged ≥ 65) screened positive for CI prior to receiving chemotherapy. Risk of bias assessment was performed using the Quality in Prognosis Studies (QUIPS) tool. Twenty-three articles were included. Sample sizes ranged from n = 31 to 703. There was heterogeneity of cancer sites, screening tools and cut-offs used to ascertain CI, and proportion of patients with CI within study samples. Severity of CI and corresponding proportion of each level within study samples were unclear in all but one study. Among studies investigating CI in a qualified multivariable model, statistically significant findings were found in 4/6 studies on survival and in 1/1 study on nonhematological toxicity. The lack of robust evidence indicates a need for further research on the role of CI in predicting survival, treatment completion, and toxicity among older adults receiving chemotherapy, and the potential implications that could shape treatment decisions.
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Cerrato A, Mattheolabakis G, Spano D. Editorial: Combinatorial Approaches for Cancer Treatment: From Basic to Translational Research. Front Oncol 2022; 12:842114. [PMID: 35186769 PMCID: PMC8847383 DOI: 10.3389/fonc.2022.842114] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 01/10/2022] [Indexed: 01/03/2023] Open
Affiliation(s)
- Aniello Cerrato
- Institute Experimental Endocrinology and Oncology "Gaetano Salvatore", National Research Council, Naples, Italy
| | - George Mattheolabakis
- School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana Monroe, Monroe, LA, United States
| | - Daniela Spano
- Institute of Biochemistry and Cell Biology, National Research Council, Naples, Italy
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Bai J, Barandouzi ZA, Rowcliffe C, Meador R, Tsementzi D, Bruner DW. Gut Microbiome and Its Associations With Acute and Chronic Gastrointestinal Toxicities in Cancer Patients With Pelvic Radiation Therapy: A Systematic Review. Front Oncol 2021; 11:745262. [PMID: 34938654 PMCID: PMC8685326 DOI: 10.3389/fonc.2021.745262] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Accepted: 11/22/2021] [Indexed: 12/12/2022] Open
Abstract
Aim Pelvic radiation therapy (RT) can impact the gut microbiome in patients with cancer and result in gastrointestinal (GI) toxicities. The purpose of this systematic review was to describe the effects of RT on the gut microbiome and the associations between the gut microbiome and GI toxicities in patients treated with pelvic RT. Methods PubMed, Embase, and Web of Science databases were searched from their earliest records to August 2020. The articles screening process adhered to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. The Mixed Method Assessment Tool was used to assess the methodological quality for each included study. All study findings were synthesized and presented in narrative format. Thirteen studies were included. The gut microbiome of fecal samples was analyzed using 16S rRNA sequencing approaches. Results There were disparities in alpha and beta diversities that existed across the studies. Divergent results were found among various phyla, including Firmicutes, Bacteroidetes, Proteobacteria, Actinobacteria, Cyanobacteria, Fusobacteria, and Deinococcus-Thermus. Moreover, alteration in the gut microbiome diversity and abundance related to cancer treatment was associated with pelvic toxicities, specifically diarrhea. Following treatment, increases in the abundance of Bacteroides was associated with diarrhea and radiation enteritis. Conclusions Pelvic RT can disrupt the diversity and abundance of commensal gut microorganisms. A dysbiotic gut microbiome showed a promising association with radiation enteritis through alterations of the intestinal barrier function, innate immunity, and intestinal repair mechanisms; however, confounders, such as diet, were not thoroughly addressed.
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Affiliation(s)
- Jinbing Bai
- Nell Hodgson Woodruff School of Nursing, Emory University, Atlanta, GA, United States.,Winship Cancer Institute, Emory University, Atlanta, GA, United States
| | - Zahra A Barandouzi
- Nell Hodgson Woodruff School of Nursing, Emory University, Atlanta, GA, United States
| | - Claire Rowcliffe
- Rollins School of Public Health, Emory University, Atlanta, GA, United States
| | - Rebecca Meador
- Nell Hodgson Woodruff School of Nursing, Emory University, Atlanta, GA, United States
| | - Despina Tsementzi
- Rollins School of Public Health, Emory University, Atlanta, GA, United States
| | - Deborah Watkins Bruner
- Nell Hodgson Woodruff School of Nursing, Emory University, Atlanta, GA, United States.,Winship Cancer Institute, Emory University, Atlanta, GA, United States
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11
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Abstract
Modeling of metastatic disease in animal models is a critical resource to study the complexity of this multi-step process in a relevant system. Available models of metastatic disease to the brain are still far from ideal but they allow to address specific aspects of the biology or mimic clinically relevant scenarios. We not only review experimental models and their potential improvements but also discuss specific answers that could be obtained from them on unsolved aspects of clinical management.
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Affiliation(s)
- Lauritz Miarka
- Brain Metastasis Group, Molecular Oncology Programme, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
| | - Manuel Valiente
- Brain Metastasis Group, Molecular Oncology Programme, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
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12
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Pozzi S, Bari A, Pecherstorfer M, Vallet S. Management of Adverse Events and Supportive Therapy in Relapsed/Refractory Multiple Myeloma. Cancers (Basel) 2021; 13:4978. [PMID: 34638462 DOI: 10.3390/cancers13194978] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 09/29/2021] [Accepted: 09/30/2021] [Indexed: 02/01/2023] Open
Abstract
Simple Summary Multiple myeloma (MM) patients with relapsing and/or refractory (RR) disease are exposed for a prolonged time to multiple drugs, which increase the risk of toxicity. In addition to tumor response, preserving the quality of life represents an important goal for this patient population. Therefore, supportive therapy plays a pivotal role in their treatment by limiting disease- and drug-related complications. The aim of this review is to outline current standards and future strategies to prevent and treat renal insufficiency, anemia, bone disease, and infection, including COVID-19, in RRMM patients. In addition, the incidence and treatment of side effects of novel anti-MM agents will be discussed. Abstract Relapsed/refractory (RR) multiple myeloma (MM) patients are a fragile population because of prolonged drug exposure and advanced age. Preserving a good quality of life is of high priority for these patients and the treatment of disease- and treatment-related complications plays a key role in their management. By preventing and limiting MM-induced complications, supportive care improves patients’ outcome. Erythropoietin-stimulating agents and bisphosphonates are well-established supportive strategies, yet novel agents are under investigation, such as anabolic bone agents and activin receptor-like kinase (ALK) inhibitors. The recent dramatic changes in the treatment landscape of MM pose an additional challenge for the routine care of RRMM patients. Multidrug combinations in first and later lines increase the risk for long-lasting toxicities, including adverse cardiovascular and neurological events. Moreover, recently approved first-in-class drugs have unique side-effect profiles, such as ocular toxicity of belantamab mafodotin or gastrointestinal toxicity of selinexor. This review discusses current standards in supportive treatment of RRMM patients, including recommendations in light of the recent SARS-CoV-19 pandemic, and critically looks at the incidence and management of side effects of standard as well as next generation anti-MM agents.
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13
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Indelicato DJ, Bates JE, Mailhot Vega RB, Rotondo RL, Hoppe BS, Morris CG, Looi WS, Sandler ES, Aldana PR, Bradley JA. Second tumor risk in children treated with proton therapy. Pediatr Blood Cancer 2021; 68:e28941. [PMID: 33565257 DOI: 10.1002/pbc.28941] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 01/11/2021] [Accepted: 01/12/2021] [Indexed: 11/10/2022]
Abstract
BACKGROUND Out-of-field neutron dissemination during double-scattered proton therapy has raised concerns of increased second malignancies, disproportionally affecting pediatric patients due to the proportion of body exposed to scatter dose and inherent radiosensitivity of developing tissue. We sought to provide empiric data on the incidence of early second tumors. METHODS Between 2006 and 2019, 1713 consecutive children underwent double-scattered proton therapy. Median age at treatment was 9.1 years; 371 were ≤3 years old. Thirty-seven patients (2.2%) had tumor predisposition syndromes. Median prescription dose was 54 Gy (range 15-75.6). Median follow-up was 3.3 years (range 0.1-12.8), including 6587 total person-years. Five hundred forty-nine patients had ≥5 years of follow-up. A second tumor was defined as any solid neoplasm throughout the body. RESULTS Eleven patients developed second tumors; the 5- and 10-year cumulative incidences were 0.8% (95% CI, 0.4-1.9%) and 3.1% (95% CI, 1.5-6.2%), respectively. Using age- and gender-specific data from the Surveillance, Epidemiology, and End Results (SEER) program, the standardized incidence ratio was 13.5; the absolute excess risk was 1.5/1000 person-years. All but one patient who developed second tumors were irradiated at ≤5 years old (p < .0005). There was also a statistically significant correlation between patients with tumor predisposition syndromes and second tumors (p < .0001). Excluding patients with tumor predisposition syndromes, 5- and 10-year rates were 0.6% (95% CI, 0.2-1.7%) and 1.7% (95% CI, 0.7-4.0%), respectively, with all five malignant second tumors occurring in the high-dose region. CONCLUSION Second tumors are rare within the decade following double-scattered proton therapy, particularly among children irradiated at >5 years old and those without tumor predisposition syndrome.
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Affiliation(s)
- Daniel J Indelicato
- Department of Radiation Oncology, University of Florida College of Medicine, Jacksonville, Florida, USA
| | - James E Bates
- Department of Radiation Oncology, Winship Cancer Institute, Emory University, Atlanta, Georgia, USA
| | - Raymond B Mailhot Vega
- Department of Radiation Oncology, University of Florida College of Medicine, Jacksonville, Florida, USA
| | - Ronny L Rotondo
- Department of Radiation Oncology, University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Bradford S Hoppe
- Department of Radiation Oncology, Mayo Clinic, Jacksonville, Florida, USA
| | - Christopher G Morris
- Department of Radiation Oncology, University of Florida College of Medicine, Jacksonville, Florida, USA
| | - Wen S Looi
- Department of Radiation Oncology, University of Florida College of Medicine, Jacksonville, Florida, USA
| | - Eric S Sandler
- Department of Pediatrics, Nemours Children's Specialty Clinic, Jacksonville, Florida, USA
| | - Philipp R Aldana
- Department of Neurosurgery, University of Florida College of Medicine, Jacksonville, Florida, USA
| | - Julie A Bradley
- Department of Radiation Oncology, University of Florida College of Medicine, Jacksonville, Florida, USA
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14
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Saleh RR, Meti N, Ribnikar D, Goldvaser H, Ocana A, Templeton AJ, Seruga B, Amir E. Associations between safety, tolerability, and toxicity and the reporting of health-related quality of life in phase III randomized trials in common solid tumors. Cancer Med 2020; 9:7888-7895. [PMID: 32886422 PMCID: PMC7643655 DOI: 10.1002/cam4.3390] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 07/13/2020] [Accepted: 07/22/2020] [Indexed: 01/09/2023] Open
Abstract
Background Anti‐cancer drugs are approved typically on the basis of efficacy and safety as evaluated in phase III randomized trials (RCTs). Health‐related quality of life (HRQoL) is a direct measure of patient benefit, but is under‐reported. Here we explore associations with reporting of HRQoL data in phase III RCTs in common solid tumors. Methods We searched ClinicalTrials.gov to identify phase III RCTs evaluating new drugs in adults with advanced cancers that completed accrual between January 2005 and October 2016. Data on HRQoL, safety, and tolerability comprising treatment‐related death, treatment discontinuation and commonly reported grade 3 or 4 adverse events (AEs) were extracted. Associations between these measures and reporting of HRQoL data were explored using logistic regression. Results Of 377 phase III RCTs identified initially, 143 studies were analysed and comprised 55% positive trials and 90% industry sponsored trials. HRQoL was listed as an endpoint in 59% trials; and of these, only 65% reported HRQoL data. There were higher odds of reporting HRQoL data for positive trials (OR 2.05, P = .04) and trials published in journals with higher impact factor (OR 1.35, P = .01). Reporting of HRQoL was not associated with treatment‐related death (OR 1.25, P = .40) or treatment discontinuation (OR 1.12, P = .61), but was positively associated with dyspnea and dermatological adverse events. Conclusions HRQoL is reported in only two‐thirds of RCTs that describe collecting such data. Reporting of HRQoL is associated with positive trial outcome and higher journal impact factor, but not associated with overall safety and tolerability of anti‐cancer drugs.
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Affiliation(s)
- Ramy R Saleh
- Division of Medical Oncology & Hematology, Department of Medicine, Princess Margaret Cancer Centre, University of Toronto, Toronto, ON, Canada
| | - Nicholas Meti
- Division of Medical Oncology & Hematology, Department of Medicine, Princess Margaret Cancer Centre, University of Toronto, Toronto, ON, Canada
| | - Domen Ribnikar
- Department of Medical Oncology, Institute of Oncology Ljubljana, Ljubljana, Slovenia
| | - Hadar Goldvaser
- Davidoff Cancer Center, Beilinson Hospital, Rabin Medical Center, Petah Tikva, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Alberto Ocana
- Experimental Therapeutics Unit, Medical Oncology Department, Hospital Clínico San Carlos, and IdISSC, Madrid, Spain.,Centro de Investigación Biomédica en Red Cáncer (CIBERONC), Madrid, Spain.,Centro Regional de Investigaciones Biomédicas, Castilla-La Mancha University, Ciudad Real, Spain
| | - Arnoud J Templeton
- Department of Oncology, St. Claraspital, Basel, Switzerland.,Faculty of Medicine, University of Basel, Basel, Switzerland
| | - Bostjan Seruga
- Department of Medical Oncology, Institute of Oncology Ljubljana, Ljubljana, Slovenia
| | - Eitan Amir
- Division of Medical Oncology & Hematology, Department of Medicine, Princess Margaret Cancer Centre, University of Toronto, Toronto, ON, Canada
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15
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Haaker L, De Meue E, Wildiers H, Verbiest A, Dumez H, Lerut E, Pans S, Albersen M, Beuselinck B. Bone metastases and age are associated with earlier dose reductions in metastatic clear-cell renal cell carcinoma patients treated with angiogenesis inhibitors. Acta Clin Belg 2019; 74:414-423. [PMID: 30497350 DOI: 10.1080/17843286.2018.1551744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Background: Metastatic clear-cell renal cell carcinoma (m-ccRCC) patients with bone metastases (BM) treated with vascular endothelial growth factor receptor (VEGFR) tyrosine kinase inhibitors (TKI) have a poorer outcome compared to patients without BM. We aimed to investigate whether an increased incidence of VEGFR-TKI treatment interruptions and/or dose reductions in patients with BM could explain this difference in outcome. Patients and methods: Retrospective study on m-ccRCC patients treated in first-line with VEGFR-TKI. Analysis of the incidence of treatment interruptions and dose reductions and time-to-event analysis. Study of the correlation with the presence of BM at start of first-line VEGFR-TKIs. Results: Two-hundred-and-five patients were included. In patients with BM, median time-to-dose-reduction was significantly shorter (3 versus 5 cycles; p = 0.005) than in patients without BM. 63% of the total number of cycles was administered at reduced dose, compared to 41% in patients without BM. Age at start of VEGFR-TKI (≤ versus >70 years) was significantly associated with median time-to-dose-reduction (5 versus 3 cycles; p = 0.007). On multivariate analysis, the presence of BM (p = 0.004; HR 1.82, 95%CI 1.21-2.73) and age at start of VEGFR-TKIs (p = 0.017; HR 1.65, 95%CI 1.10-2.50) were independently associated with time-to-dose-reduction. Conclusion: In m-ccRCC patients treated with VEGFR-TKIs, dose reductions occurred earlier in patients with BM compared to patients without BM and in elderly patients.
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Affiliation(s)
- Lorenz Haaker
- Department of General Medical Oncology, University Hospitals Leuven, KULeuven, Leuven, Belgium
| | - Elisabeth De Meue
- Department of General Medical Oncology, University Hospitals Leuven, KULeuven, Leuven, Belgium
| | - Hans Wildiers
- Department of General Medical Oncology, University Hospitals Leuven, KULeuven, Leuven, Belgium
| | - Annelies Verbiest
- Department of General Medical Oncology, University Hospitals Leuven, KULeuven, Leuven, Belgium
| | - Herlinde Dumez
- Department of General Medical Oncology, University Hospitals Leuven, KULeuven, Leuven, Belgium
| | - Evelyne Lerut
- Department of Pathology, University Hospitals Leuven, KULeuven, Leuven, Belgium
| | - Steven Pans
- Department of Radiology, University Hospitals Leuven, KULeuven, Leuven, Belgium
| | - Maarten Albersen
- Department of Urology, University Hospitals Leuven, KULeuven, Leuven, Belgium
| | - Benoit Beuselinck
- Department of General Medical Oncology, University Hospitals Leuven, KULeuven, Leuven, Belgium
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16
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Tecza K, Pamula-Pilat J, Lanuszewska J, Butkiewicz D, Grzybowska E. Pharmacogenetics of toxicity of 5-fluorouracil, doxorubicin and cyclophosphamide chemotherapy in breast cancer patients. Oncotarget 2018; 9:9114-9136. [PMID: 29507678 PMCID: PMC5823653 DOI: 10.18632/oncotarget.24148] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Accepted: 01/02/2018] [Indexed: 01/28/2023] Open
Abstract
The differences in patients' response to the same medication, toxicity included, are one of the major problems in breast cancer treatment. Chemotherapy toxicity makes a significant clinical problem due to decreased quality of life, prolongation of treatment and reinforcement of negative emotions associated with therapy. In this study we evaluated the genetic and clinical risk factors of FAC chemotherapy-related toxicities in the group of 324 breast cancer patients. Selected genes and their polymorphisms were involved in FAC drugs transport (ABCB1, ABCC2, ABCG2,SLC22A16), metabolism (ALDH3A1, CBR1, CYP1B1, CYP2C19, DPYD, GSTM1, GSTP1, GSTT1, MTHFR,TYMS), DNA damage recognition, repair and cell cycle control (ATM, ERCC1, ERCC2, TP53, XRCC1). The multifactorial risk models that combine genetic risk modifiers and clinical characteristics were constructed for 12 toxic symptoms. The majority of toxicities was dependent on the modifications in components of more than one pathway of FAC drugs, while the impact level of clinical factors was comparable to the genetic ones. For the carriers of multiple high risk factors the chance of developing given symptom was significantly elevated which proved the factor-dosage effect. We found the strongest associations between concurrent presence of clinical factors - overall and recurrent anemia, nephrotoxicity and early nausea and genetic polymorphisms in genes responsible for DNA repair, drugs metabolism and transport pathways. These results indicate the possibility of selection of the patients with expected high tolerance to FAC treatment and consequently with high chance of chemotherapy completion without the dose reduction, treatment delays and decline in the quality of life.
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Affiliation(s)
- Karolina Tecza
- Center for Translational Research and Molecular Biology of Cancer, Maria Sklodowska-Curie Memorial Cancer Center and Institute of Oncology, Gliwice, Poland
| | - Jolanta Pamula-Pilat
- Center for Translational Research and Molecular Biology of Cancer, Maria Sklodowska-Curie Memorial Cancer Center and Institute of Oncology, Gliwice, Poland
| | - Joanna Lanuszewska
- Center for Translational Research and Molecular Biology of Cancer, Maria Sklodowska-Curie Memorial Cancer Center and Institute of Oncology, Gliwice, Poland
| | - Dorota Butkiewicz
- Center for Translational Research and Molecular Biology of Cancer, Maria Sklodowska-Curie Memorial Cancer Center and Institute of Oncology, Gliwice, Poland
| | - Ewa Grzybowska
- Center for Translational Research and Molecular Biology of Cancer, Maria Sklodowska-Curie Memorial Cancer Center and Institute of Oncology, Gliwice, Poland
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17
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Rangger C, Klingler M, Balogh L, Pöstényi Z, Polyak A, Pawlak D, Mikołajczak R, von Guggenberg E. 177Lu Labeled Cyclic Minigastrin Analogues with Therapeutic Activity in CCK2R Expressing Tumors: Preclinical Evaluation of a Kit Formulation. Mol Pharm 2017; 14:3045-3058. [PMID: 28728415 DOI: 10.1021/acs.molpharmaceut.7b00241] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Minigastrin (MG) analogues specifically target cholecystokinin-2 receptors (CCK2R) expressed in different tumors and enable targeted radiotherapy of advanced and disseminated disease when radiolabeled with a beta emitter such as 177Lu. Especially truncated MG analogues missing the penta-Glu sequence are associated with low kidney retention and seem therefore most promising for therapeutic use. Based on [d-Glu1,desGlu2-6]MG (MG11) we have designed the two cyclic MG analogues cyclo1,9[γ-d-Glu1,desGlu2-6,d-Lys9]MG (cyclo-MG1) and cyclo1,9[γ-d-Glu1,desGlu2-6,d-Lys9,Nle11]MG (cyclo-MG2). In the present work we have developed and preclinically evaluated a pharmaceutical kit formulation for the labeling with 177Lu of the two DOTA-conjugated cyclic MG analogues. The stability of the kits during storage as well as the stability of the radiolabeled peptides was investigated. A cell line stably transfected with human CCK2R and a control cell line without receptor expression were used for in vitro and in vivo studies with the radioligands prepared from kit formulations. In terms of stability 177Lu-DOTA-cyclo-MG2 showed advantages over 177Lu-DOTA-cyclo-MG1. Still, for both radioligands a high receptor-mediated cell uptake and favorable pharmacokinetic profile combining receptor-specific tumor uptake with low unspecific tissue uptake and low kidney retention were confirmed. Investigating the therapy efficacy and treatment toxicity in xenografted BALB/c nude mice a receptor-specific and comparable therapeutic effect could be demonstrated for both radioligands. A 1.7- to 2.6-fold increase in tumor volume doubling time was observed for receptor-positive tumors in treated versus untreated animals, which was 39-73% higher when compared to receptor-negative tumors. The treatment was connected with transient bone marrow toxicity and minor signs of kidney toxicity. All together the obtained results support further studies for the clinical translation of this new therapeutic approach.
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Affiliation(s)
- Christine Rangger
- Department of Nuclear Medicine, Medical University of Innsbruck , 6020 Innsbruck, Austria
| | - Maximilian Klingler
- Department of Nuclear Medicine, Medical University of Innsbruck , 6020 Innsbruck, Austria
| | - Lajos Balogh
- Department of Nuclear Medicine and Translational Biological Sciences, OKK-OSSKI , 1221 Budapest, Hungary
| | - Zita Pöstényi
- Department of Nuclear Medicine and Translational Biological Sciences, OKK-OSSKI , 1221 Budapest, Hungary
| | - Andras Polyak
- Department of Nuclear Medicine and Translational Biological Sciences, OKK-OSSKI , 1221 Budapest, Hungary
| | - Dariusz Pawlak
- Radioisotope Centre POLATOM, National Centre for Nuclear Research , 05-400 Otwock, Poland
| | - Renata Mikołajczak
- Radioisotope Centre POLATOM, National Centre for Nuclear Research , 05-400 Otwock, Poland
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18
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Reyes-Gibby CC, Melkonian SC, Hanna EY, Yeung SCJ, Lu C, Chambers MS, Banala SR, Gunn GB, Shete SS. Cohort study of oncologic emergencies in patients with head and neck cancer. Head Neck 2017; 39:1195-1204. [PMID: 28346771 DOI: 10.1002/hed.24748] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Revised: 12/12/2016] [Accepted: 01/03/2017] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND Treatments for head and neck squamous cell carcinoma (HNSCC) are associated with toxicities that lead to emergency department presentation. METHODS We utilized data from an ongoing prospective cohort of newly diagnosed, previously untreated patients (N = 298) with HNSCC to evaluate the association between clinical and epidemiologic factors and risk for and frequency of emergency department presentation. Time to event was calculated from the date of treatment initiation to emergency department presentation, date of death, or current date. Frequency of emergency department presentation was the sum of emergency department visits during the follow-up time. RESULTS History of hypertension, normal/underweight body mass index (BMI), and probable depression predicted increased risk for emergency department presentation. BMI and severe pain were associated with higher frequency of emergency department presentations. CONCLUSION Clinical and epidemiologic factors can help predict patients with HNSCC who will present to the emergency department. Such knowledge may improve treatment-related patient outcomes and quality of life. © 2017 Wiley Periodicals, Inc. Head Neck 39: 1195-1204, 2017.
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Affiliation(s)
- Cielito C Reyes-Gibby
- Department of Emergency Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Stephanie C Melkonian
- Department of Emergency Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Ehab Y Hanna
- Department of Head and Neck Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Sai-Ching J Yeung
- Department of Emergency Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Charles Lu
- Department of Thoracic/Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Mark S Chambers
- Department of Head and Neck Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Srinivas R Banala
- Department of Emergency Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Gary B Gunn
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Sanjay S Shete
- Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston, Texas.,Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, Texas
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19
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Tevaarwerk AJ, Lee JW, Terhaar A, Sesto ME, Smith ML, Cleeland CS, Fisch MJ. Working after a metastatic cancer diagnosis: Factors affecting employment in the metastatic setting from ECOG-ACRIN's Symptom Outcomes and Practice Patterns study. Cancer 2015; 122:438-46. [PMID: 26687819 DOI: 10.1002/cncr.29656] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Revised: 08/03/2015] [Accepted: 08/04/2015] [Indexed: 01/06/2023]
Abstract
BACKGROUND Improved survival for individuals with metastatic cancer accentuates the importance of employment for cancer survivors. A better understanding of how metastatic cancer affects employment is a necessary step toward the development of tools for assisting survivors in this important realm. METHODS The ECOG-ACRIN Symptom Outcomes and Practice Patterns study was analyzed to investigate what factors were associated with the employment of 680 metastatic cancer patients. Univariate and multivariate logistic regression analyses were conducted to compare patients stably working with patients no longer working. RESULTS There were 668 metastatic working-age participants in the analysis: 236 (35%) worked full- or part-time, whereas 302 (45%) had stopped working because of illness. Overall, 58% reported some change in employment due to illness. A better performance status and non-Hispanic white ethnicity/race were significantly associated with continuing to work despite a metastatic cancer diagnosis in the multivariate analysis. The disease type, time since metastatic diagnosis, number of metastatic sites, location of metastatic disease, and treatment status had no significant impact. Among the potentially modifiable factors, receiving hormonal treatment (if a viable option) and decreasing symptom interference were associated with continuing to work. CONCLUSIONS A significant percentage of the metastatic patients remained employed; increased symptom burden was associated with a change to no longer working. Modifiable factors resulting in work interference should be minimized so that patients with metastatic disease may continue working if this is desired. Improvements in symptom control and strategies developed to help address workplace difficulties have promise for improving this aspect of survivorship.
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Affiliation(s)
| | - Ju-Whei Lee
- Dana-Farber Cancer Institute, Boston, Massachusetts
| | | | - Mary E Sesto
- University of Wisconsin-Madison, Madison, Wisconsin
| | | | | | - Michael J Fisch
- The University of Texas MD Anderson Cancer Center, Houston, Texas
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20
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van der Werf A, Blauwhoff-Buskermolen S, Langius JAE, Berkhof J, Verheul HMW, de van der Schueren MAE. The effect of individualized nutritional counseling on muscle mass and treatment outcome in patients with metastatic colorectal cancer undergoing chemotherapy: a randomized controlled trial protocol. BMC Cancer 2015; 15:98. [PMID: 25884881 PMCID: PMC4352568 DOI: 10.1186/s12885-015-1092-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2014] [Accepted: 02/20/2015] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND A low muscle mass is prevalent in patients with metastatic colorectal cancer (mCRC) and has been associated with poor treatment outcome. Chemotherapeutic treatment has an additional unfavorable effect on muscle mass. Sufficient protein intake and physical activity are known to induce muscle protein anabolism in healthy individuals, however it is unclear whether optimal nutrition is effective to preserve muscle mass in patients with mCRC during first-line chemotherapy as well. We hypothesize that individual nutritional counseling by a trained dietitian during first-line chemotherapy is effective in preserving muscle mass and may improve clinical outcomes in patients with mCRC. METHODS/DESIGN In this multi-center single-blind randomized controlled trial, patients with mCRC scheduled for first-line combination chemotherapy consisting of oxaliplatin and fluoropyrimidine, with or without bevacizumab (n = 110), will be randomized to receive either individualized nutritional counseling by a trained dietitian to achieve a sufficient dietary intake and an adequate physical activity level, or usual care. Outcome measures will be assessed at baseline and after two and four months of treatment. The primary endpoint will be the change in skeletal muscle area (measured by CT-scan) at the first treatment evaluation. Secondary endpoints will be quality of life, physical functioning, treatment toxicity, treatment intensity and survival. Statistical analyses include one-sided t-tests for the primary endpoint and mixed models and the Kaplan-Meier method for secondary endpoints. DISCUSSION This randomized controlled trial will provide evidence whether individualized nutritional counseling during chemotherapy is effective in preventing loss of muscle mass in patients with mCRC. TRIAL REGISTRATION ClinicalTrials.gov NCT01998152 ; Netherlands Trial Register NTR4223.
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Affiliation(s)
- Anne van der Werf
- Department of Nutrition and Dietetics, Internal Medicine, VU University Medical Center, Amsterdam, The Netherlands.
- Department of Medical Oncology, Internal Medicine, VU University Medical Center, Amsterdam, The Netherlands.
| | - Susanne Blauwhoff-Buskermolen
- Department of Nutrition and Dietetics, Internal Medicine, VU University Medical Center, Amsterdam, The Netherlands.
- Department of Medical Oncology, Internal Medicine, VU University Medical Center, Amsterdam, The Netherlands.
| | - Jacqueline A E Langius
- Department of Nutrition and Dietetics, Internal Medicine, VU University Medical Center, Amsterdam, The Netherlands.
- Faculty of Health, Nutrition and Sport, The Hague University of Applied Sciences, The Hague, The Netherlands.
| | - Johannes Berkhof
- Department of Epidemiology en Biostatistics, VU University, Amsterdam, The Netherlands.
| | - Henk M W Verheul
- Department of Medical Oncology, Internal Medicine, VU University Medical Center, Amsterdam, The Netherlands.
| | - Marian A E de van der Schueren
- Department of Nutrition and Dietetics, Internal Medicine, VU University Medical Center, Amsterdam, The Netherlands.
- Faculty of Health and Social Studies, Department of Nutrition, Sports and Health, HAN University of Applied Sciences, Nijmegen, The Netherlands.
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Denholm JT, McBryde ES, Eisen DP, Penington JS, Chen C, Street AC. Adverse effects of isoniazid preventative therapy for latent tuberculosis infection: a prospective cohort study. Drug Healthc Patient Saf 2014; 6:145-9. [PMID: 25364275 PMCID: PMC4211866 DOI: 10.2147/dhps.s68837] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Introduction Isoniazid preventative therapy (IPT) is a widely used intervention for treatment of latent tuberculosis infection (LTBI), particularly in patients at high risk for reactivation. While treatment-limiting adverse effects have been well studied, few prospective studies have considered the range of adverse effects that patients may experience with IPT. Methods All patients commencing treatment for LTBI were prospectively enrolled in an ongoing database of LTBI treatment outcomes particularly related to adverse effects, treatment adherence, and treatment completion. Results Data on the first 100 patients who were prescribed IPT are presented. Fifty-six patients reported at least one adverse effect at some stage during treatment, with six experiencing at least one World Health Organization (WHO) Grade 3–4 adverse effect. Increased age was significantly associated with risk of adverse effects (odds ratio [OR] =1.05 per year; confidence interval [CI] of 1.02–1.08=95%). Eighty-five patients had documented completion of therapy locally, with ten patients ceasing IPT due to adverse effects. Discussion This report highlights a variety of somatic adverse effects that occurred in a real-world cohort of patients receiving IPT. While adverse effects were frequently identified in this study, the considerable majority were low grade and transient. Despite frequent adverse effects of LTBI in our treatment cohort, the study demonstrated high levels of treatment adherence and completion.
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Affiliation(s)
- Justin T Denholm
- Victorian Infectious Diseases Service, Parkville, VIC, Australia ; Department of Microbiology and Immunology, University of Melbourne, Parkville, VIC, Australia ; Victorian Tuberculosis Program, Melbourne Health, Parkville, VIC, Australia
| | - Emma S McBryde
- Victorian Infectious Diseases Service, Parkville, VIC, Australia ; Department of Medicine (RMH/WH), University of Melbourne, Parkville, VIC, Australia
| | - Damon P Eisen
- Victorian Infectious Diseases Service, Parkville, VIC, Australia ; Department of Medicine (RMH/WH), University of Melbourne, Parkville, VIC, Australia
| | | | - Caroline Chen
- Department of Pharmacy, Royal Melbourne Hospital, Parkville, VIC, Australia
| | - Alan C Street
- Victorian Infectious Diseases Service, Parkville, VIC, Australia
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Abstract
BACKGROUND Whether or not toxicity predicts clinical outcomes has long been a question regarding cancer treatments. While prior studies have focused on specific cancers, therapies, and toxicities, no comprehensive evidence exists on whether treatment toxicity predicts favorable outcomes. METHODS We abstracted treatment toxicity and clinical outcome data from a sample of phase III oncology randomized clinical trials (n = 99 trials). We investigated whether treatments with relatively greater toxicity compared with their controls had relatively higher, lower, or equivocal rates of clinical efficacy, measured by progression-free survival (PFS) and overall survival (OS). Several toxicities were assessed (all grades, grades III/IV, cutaneous rash, gastrointestinal toxicity, and myelosuppression). RESULTS Toxicity and efficacy were greater among treatments than controls (e.g. 3.5 instances of all-grade toxicity per patient in treatment arms versus 2.8 instances in controls, P < 0.001; mean PFS of 9.1 months across treatment arms versus 7.1 months across controls, P < 0.001; mean OS of 18.6 months across treatment arms versus 16.9 months across controls, P < 0.001). Across trials, greater relative treatment toxicity was strongly associated with greater PFS in treatments versus controls (P < 0.001), but not OS (P = 0.44). Although higher relative rates of myelosuppression and cutaneous rash among treatments were not associated with greater treatment efficacy, greater relative gastrointestinal toxicity among treatments was associated with greater relative PFS compared with controls (P = 0.007). CONCLUSION Across trials, treatments with relatively greater all-grade toxicity compared with controls are associated with relatively greater PFS but not OS.
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Affiliation(s)
- M V Abola
- Department of Family Medicine, Case Western Reserve University School of Medicine, Cleveland
| | - V Prasad
- Medical Oncology Branch, National Cancer Institute, National Institutes of Health, Bethesda
| | - A B Jena
- Department of Health Care Policy, Harvard Medical School, Boston; Department of Medicine, Massachusetts General Hospital, Boston, USA.
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Massimino M, Gandola L, Biassoni V, Spreafico F, Schiavello E, Poggi G, Pecori E, Vajna De Pava M, Modena P, Antonelli M, Giangaspero F. Evolving of therapeutic strategies for CNS-PNET. Pediatr Blood Cancer 2013; 60:2031-5. [PMID: 23852767 DOI: 10.1002/pbc.24540] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2013] [Accepted: 02/26/2013] [Indexed: 11/11/2022]
Abstract
BACKGROUND A protocol for the intensive treatment of non-cerebellar PNET (CNS-PNET) combining chemotherapy and radiotherapy was launched in 2000. Efforts were subsequently made to improve the prognosis and to de-escalate the treatment for selected patient groups. PROCEDURE Twenty-eight consecutive patients were enrolled for a high-dose drug schedule (methotrexate, etoposide, cyclophosphamide, and carboplatin ± vincristine), followed by hyperfractionated accelerated CSI (HART-CSI) at total doses of 31-39 Gy, depending on the patient's age, with two high-dose thiotepa courses following CSI. After the first 15 patients had been treated, craniospinal irradiation (CSI) was replaced with focal radiotherapy (RT) for selected cases (non-metastatic and not progressing during induction chemotherapy). Eight of the 28 children received the same chemotherapy but conventionally fractionated focal RT at 54 Gy. RESULTS The 5-year progression-free survival (PFS), event-free survival (EFS), and overall survival (OS) rates were 62%, 53%, and 52%, respectively, for the whole series, and 70%, 70%, and 87% for the eight focally irradiated children. Residual disease and metastases were not prognostically significant. In children with residual disease, response to RT was significant (5-year PFS 59% vs. 20%, P = 0.01), while the total dose of CSI was not. There were three treatment-related toxic events. Relapses were local in seven cases (including two of the eight focally irradiated patients), and both local and disseminated in 2. CONCLUSIONS This intensive schedule enabled treatment stratification for the purposes of radiation, thereby sparing some children full-dose CSI. Local control is the main goal of treatment for CNS-PNET.
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Affiliation(s)
- Maura Massimino
- Department of Pediatrics, Fond. IRCCS Istituto Nazionale dei Tumori, Milano, Italy
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May JT, Rao N, Sabater RD, Boutrid H, Caudell JJ, Merchant F, Han G, Padhya TA, McCaffrey JC, Tanvetyanon T, Deconti R, Kish J, McCaffrey TV, Trotti A. Intensity-modulated radiation therapy as primary treatment for oropharyngeal squamous cell carcinoma. Head Neck 2013; 35:1796-800. [PMID: 23468387 DOI: 10.1002/hed.23245] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/06/2012] [Indexed: 11/07/2022] Open
Abstract
BACKGROUND Over the past decade, intensity-modulated radiation therapy (IMRT) has gained widespread use in the treatment of head and neck cancer. METHODS All patients with squamous cell carcinoma of the oropharynx treated with primary IMRT with or without chemotherapy over a 5-year period were reviewed. Outcomes and morbidity were analyzed and compared with previously published data. RESULTS In all, 170 patients were included in the analysis. The 3-year local control, locoregional control, disease-free survival, and overall survival rates were 92%, 91%, 80%, and 87%, respectively. Feeding tubes were present in 55% of patients during treatment, but remained in only 1% 2 years following treatment. CONCLUSIONS This study confirms that IMRT yields excellent treatment outcomes for oropharyngeal carcinoma. Although acute toxicity remains a problem, late toxicity rates are low and long-term feeding tube dependence is rare compared with conventional radiation therapy.
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MESH Headings
- Adult
- Aged
- Aged, 80 and over
- Antibodies, Monoclonal, Humanized/therapeutic use
- Antineoplastic Agents/therapeutic use
- Carboplatin/therapeutic use
- Carcinoma, Squamous Cell/drug therapy
- Carcinoma, Squamous Cell/mortality
- Carcinoma, Squamous Cell/pathology
- Carcinoma, Squamous Cell/radiotherapy
- Cetuximab
- Chemotherapy, Adjuvant
- Cisplatin/therapeutic use
- Disease-Free Survival
- Enteral Nutrition
- Female
- Follow-Up Studies
- Humans
- Male
- Middle Aged
- Oropharyngeal Neoplasms/drug therapy
- Oropharyngeal Neoplasms/mortality
- Oropharyngeal Neoplasms/pathology
- Oropharyngeal Neoplasms/radiotherapy
- Radiotherapy Planning, Computer-Assisted
- Radiotherapy, Intensity-Modulated/adverse effects
- Retrospective Studies
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Affiliation(s)
- James T May
- Head and Neck Oncology Program, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida
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Keefe D, Bowen J, Gibson R, Tan T, Okera M, Stringer A. Noncardiac vascular toxicities of vascular endothelial growth factor inhibitors in advanced cancer: a review. Oncologist 2011; 16:432-44. [PMID: 21441297 PMCID: PMC3228115 DOI: 10.1634/theoncologist.2010-0271] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2010] [Accepted: 01/13/2011] [Indexed: 12/15/2022] Open
Abstract
The introduction of molecularly targeted anticancer therapies has brought the promise of longer survival times for select patients with cancers previously considered untreatable. However, it has also brought new toxicities that require understanding and management, sometimes for long periods of time. Vascular endothelial growth factor inhibitors are associated with a broad range of adverse effects, with vascular toxicity being particularly serious. This review focuses on the current understanding of the pathophysiology and mechanisms of macrovascular toxicities (hypertension, hemorrhage, and thromboembolism), their incidence and severity, the current clinical management, and implications in the advanced cancer setting. Movement of these agents into the early disease setting will alter the impact of these toxicities. Search Strategy and Selection Criteria. Information for this review was collected by searching PubMed/Medline and American Society of Clinical Oncology abstract databases. The medical subject heading terms used included toxicity, hypertension, thromboembolism, hemorrhage, intestinal perforation, risk factors, pharmacokinetics, and metabolism, combined with free text search terms including, but not limited to, VEGF inhibitor*, bevacizumab, sunitinib, and sorafenib. Articles published in English before March 2010 were included, in addition to information from case reports and pharmaceutical agent package inserts.
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Affiliation(s)
- Dorothy Keefe
- Discipline of Medicine, School of Medicine, School of Medical Sciences, Faculty of Health Sciences, University of Adelaide, Adelaide, South Australia.
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