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Zhang L, Chen S, Wang W, Wang Y, Liang Y. Inflammatory and Nutritional Scoring System for Predicting Prognosis in Patients with Newly Diagnosed Multiple Myeloma. J Inflamm Res 2023; 16:7-17. [PMID: 36636247 PMCID: PMC9831084 DOI: 10.2147/jir.s390279] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Accepted: 12/24/2022] [Indexed: 01/06/2023] Open
Abstract
Purpose We aimed to assess the prognostic value of pretreatment inflammatory and nutritional parameters for predicting overall survival (OS) in patients with newly diagnosed multiple myeloma (NDMM), and to build a new scoring system using the most important variables. Methods We retrospectively analyzed baseline clinical and laboratory data for patients with NDMM, who were randomly grouped into training and validation cohorts at a ratio of 8:2. The Inflammatory Nutritional Score (INS) was developed based on the least absolute shrinkage and selection operator (LASSO) Cox regression. The INS and other independent prognostic factors were entered into a multivariate Cox model and merged to generate a nomogram model for predictive optimization. Performance and predictive accuracy were assessed using the concordance index (C-index), calibration plots, and time-dependent receiver operating characteristic (ROC) curves. Results In total, 442 eligible patients were enrolled. Six inflammatory/nutritional variables, including the Nutritional Risk Index (NRI), body mass index (BMI), neutrophil-lymphocyte ratio (NLR), monocyte-lymphocyte ratio (MLR), platelet-lymphocyte ratio (PLR), and albumin-alkaline phosphatase ratio (AAPR), were integrated to construct the INS using the LASSO Cox model. The predictive nomogram constructed following the multivariate Cox analysis included INS, performance status, lactate dehydrogenase, age, and C-reactive protein. The model exhibited good predictive performance, with a C-index of 0.708 in the training cohort and 0.749 in the validation cohort. Moreover, the calibration curves also demonstrated excellent consistency between predicted and observed survival in both cohorts. In the time-dependent ROC analysis, our nomogram model exhibited better performance than other staging systems for multiple myeloma. Conclusion The INS represents an independent prognostic signature in patients with NDMM. Our novel nomogram based on INS may aid in predicting survival probability and stratifying risk.
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Affiliation(s)
- Limei Zhang
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, People’s Republic of China,Department of Hematologic Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Guangzhou, People’s Republic of China
| | - Shuzhao Chen
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, People’s Republic of China,Department of Hematologic Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Guangzhou, People’s Republic of China
| | - Weida Wang
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, People’s Republic of China,Department of Hematologic Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Guangzhou, People’s Republic of China
| | - Yun Wang
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, People’s Republic of China,Department of Hematologic Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Guangzhou, People’s Republic of China
| | - Yang Liang
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, People’s Republic of China,Department of Hematologic Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Guangzhou, People’s Republic of China,Correspondence: Yang Liang; Yun Wang, Department of Hematologic Oncology, Sun Yat-sen University Cancer, State Key Laboratory of Oncology in South China, 651 Dongfeng Road East, Guangzhou, Guangdong, 510060, People’s Republic of China, Email ;
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Liposomal therapies in oncology: does one size fit all? Cancer Chemother Pharmacol 2018; 82:741-755. [DOI: 10.1007/s00280-018-3668-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Accepted: 08/09/2018] [Indexed: 12/23/2022]
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Szudy-Szczyrek A, Mlak R, Szczyrek M, Chocholska S, Sompor J, Nogalski A, Małecka-Massalska T, Hus M. Polymorphisms in the promoter region of the CRBN gene as a predictive factor for the first-line CTD therapy in multiple myeloma patients. Oncotarget 2018; 9:24054-24068. [PMID: 29844872 PMCID: PMC5963627 DOI: 10.18632/oncotarget.25307] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Accepted: 04/16/2018] [Indexed: 11/25/2022] Open
Abstract
Cereblon is a primary molecular target for immunomodulatory drugs. The aim of this study was to evaluate the influence of selected clinical and molecular factors including single nucleotide polymorphisms (SNPs) in CRBN gene on the efficacy of first line CTD (cyclophosphamide, thalidomide, dexamethasone) chemotherapy in patients with multiple myeloma. Study group consisted of 68 patients. Analysis of CRBN gene SNPs (rs6768972, rs1672753) was performed using Real-Time PCR genotyping technique. Median progression free survival (PFS) was 15 months and overall survival (OS) 79 months. Factors associated with significantly shorter OS included ISS 3, kidney disease, weight loss, anemia, thrombocytopenia, hypoalbuminemia, elevated β2-microglobuline and CRP. The presence of t(4;14) was associated with significantly shorter PFS and OS. Both examined SNPs proved to be statistically significant, independent predictive factors of efficacy of the CTD chemotherapy. The presence of AA genotype (rs6768972) correlated with longer median PFS (18 vs 9 months; HR=0.49,95% CI: 0.26-0.91, p=0.0062). Conversely, in the carriers of CC genotype (rs1672753) significantly shorter median PFS was observed (4 vs 16 months; HR=3.93, 95% CI: 0.26-59.64, p=0.0321). In conclusion, SNPs of the CRBN gene may be useful in qualifying patients for treatment with regimens containing thalidomide.
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Affiliation(s)
- Aneta Szudy-Szczyrek
- Department of Haematooncology and Bone Marrow Transplantation, Medical University of Lublin, 20-081 Lublin, Poland
| | - Radosław Mlak
- Department of Human Physiology, Medical University of Lublin, 20-080 Lublin, Poland
| | - Michał Szczyrek
- Department of Internal Medicine in Nursing, Medical University of Lublin, 20-090 Lublin, Poland.,Department of Pneumology, Oncology and Allergology, Medical University of Lublin, 20-950 Lublin, Poland
| | - Sylwia Chocholska
- Department of Haematooncology and Bone Marrow Transplantation, Medical University of Lublin, 20-081 Lublin, Poland
| | - Jacek Sompor
- Department of Trauma Surgery and Emergency Medicine, Medical University of Lublin, 20-081 Lublin, Poland
| | - Adam Nogalski
- Department of Trauma Surgery and Emergency Medicine, Medical University of Lublin, 20-081 Lublin, Poland
| | | | - Marek Hus
- Department of Haematooncology and Bone Marrow Transplantation, Medical University of Lublin, 20-081 Lublin, Poland
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Zhang L, Pan L, Xiang B, Zhu H, Wu Y, Chen M, Guan P, Zou X, Valencia CA, Dong B, Li J, Xie L, Ma H, Wang F, Dong T, Shuai X, Niu T, Liu T. Potential role of exosome-associated microRNA panels and in vivo environment to predict drug resistance for patients with multiple myeloma. Oncotarget 2017; 7:30876-91. [PMID: 27129167 PMCID: PMC5058725 DOI: 10.18632/oncotarget.9021] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Accepted: 03/31/2016] [Indexed: 02/05/2023] Open
Abstract
Multiple myeloma (MM) is the second most common hematologic neoplasms and an appropriate in vivo environment for myeloma cells has potential implications for initiation, progression, and metastasis of MM. Exosomes, entities carrying microRNAs (miRNAs) to target locations, participate in the cross-talk between myeloma cells and nonmalignant components of the in vivo environment. This study disclosed the emerging roles of circulating exosome-associated miRNAs in drug resistance (DR) of MM. To this end, the medical records of consecutively hospitalized MM patients, who received novel agents-based therapies, were analyzed. Then, an optimized procedure was established for exosome isolation and exosomal RNA analysis. The exosome-associated miRNA expression patterns for predicting bortezomib (Bz) resistance of MM were further examined using a microarray. In total, 204 patients were enrolled with DR rates of 36.5%, 73.1% and 81.8% in the bortezomib (Bz), thalidomide and lenalidomide containing groups. The serum total light chain ratio ≥ 100, CRP ≥ 20 mg/L, and the second-line usage increased risks of acquired Bz-resistance. Among 68 cases having genetic tests, a high risk factor for predicting de novo DR was 1q21 amplification, which also correlated with lower levels of cholesterol and LDL-C. Moreover, nano-sized exosomes were isolated with significantly increasing internal RNAs and down-regulation of exosomal miR-16-5p, miR-15a-5p and miR-20a-5p, miR-17-5p was revealed in the patients resistant to Bz. The routine workup of MM hardly suggested a value for DR prediction. The circulating exosomes carrying miRNAs provided a window that permits a better understanding of the in vivo intercellular crosstalk in MM patients.
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Affiliation(s)
- Li Zhang
- Department of Hematology, West China Hospital, Sichuan University, Chengdu, China.,Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts, USA
| | - Ling Pan
- Department of Hematology, West China Hospital, Sichuan University, Chengdu, China
| | - Bing Xiang
- Department of Hematology, West China Hospital, Sichuan University, Chengdu, China
| | - Huanling Zhu
- Department of Hematology, West China Hospital, Sichuan University, Chengdu, China
| | - Yu Wu
- Department of Hematology, West China Hospital, Sichuan University, Chengdu, China
| | - Meng Chen
- Department of Hematology, West China Hospital, Sichuan University, Chengdu, China
| | - Pujun Guan
- Department of Radiology, West China Hospital, Sichuan University, Chengdu, China
| | - Xingli Zou
- Department of Hematology, Affiliated Hospital of North Sichuan Medical College, Nanchang, China
| | - C Alexander Valencia
- Division of Human Genetics, Cincinnati Children's Hospital Medical Center and Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Biao Dong
- State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Jianjun Li
- Department of Hematology, West China Hospital, Sichuan University, Chengdu, China
| | - Liping Xie
- Department of Hematology, West China Hospital, Sichuan University, Chengdu, China
| | - Hongbing Ma
- Department of Hematology, West China Hospital, Sichuan University, Chengdu, China
| | - Fangfang Wang
- Department of Hematology, West China Hospital, Sichuan University, Chengdu, China
| | - Tian Dong
- Department of Hematology, West China Hospital, Sichuan University, Chengdu, China
| | - Xiao Shuai
- Department of Hematology, West China Hospital, Sichuan University, Chengdu, China
| | - Ting Niu
- Department of Hematology, West China Hospital, Sichuan University, Chengdu, China
| | - Ting Liu
- Department of Hematology, West China Hospital, Sichuan University, Chengdu, China
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5
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Jung SH, Ahn SY, Choi HW, Shin MG, Lee SS, Yang DH, Ahn JS, Kim YK, Kim HJ, Lee JJ. STAT3 expression is associated with poor survival in non-elderly adult patients with newly diagnosed multiple myeloma. Blood Res 2017; 52:293-299. [PMID: 29333406 PMCID: PMC5762740 DOI: 10.5045/br.2017.52.4.293] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Revised: 06/28/2017] [Accepted: 07/08/2017] [Indexed: 12/22/2022] Open
Abstract
Background Signal transducer and activator of transcription 3 (STAT3) is not only a key signaling molecule in the regulation of growth but is also involved in malignant transformation. We investigated the prognostic significance of STAT3 expression in 94 non-elderly adult patients (aged 38 to 65 yr) with newly diagnosed multiple myeloma (MM). Methods Tumor cell-specific phosphotyrosine-STAT3 (PY-STAT3) expression at the time of diagnosis was evaluated with dual immunohistochemical (IHC) staining for PY-STAT3 and CD138. Results PY-STAT3 positivity was detected in 10 patients (10.6%), including three who showed strong expression. PY-STAT3-positive patients had higher serum C-reactive protein and calcium levels at diagnosis than did PY-STAT3-negative patients. PY-STAT3 positivity had predictive value for poor progression-free survival (PFS; P=0.001) and overall survival (OS; P=0.003). Among the 60 patients who received frontline autologous stem cell transplantation, PY-STAT3-positive patients had poorer PFS than did PY-STAT3-negative patients (4.2 vs. 19.2 mo, respectively; P=0.013). Multivariate analysis identified PY-STAT3 expression as an independent prognostic factor for PFS (relative risk [RR]=2.706, P=0.014) and OS (RR=3.091, P=0.044). Conclusion These data show that PY-STAT3 positivity, as determined using dual IHC, is a marker of poor prognosis in non-elderly adult patients with MM.
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Affiliation(s)
- Sung-Hoon Jung
- Department of Hematology-Oncology, Chonnam National University Hwasun Hospital, Hwasun, Korea
| | - Seo-Yeon Ahn
- Department of Hematology-Oncology, Chonnam National University Hwasun Hospital, Hwasun, Korea
| | - Hyun-Woo Choi
- Department of Laboratory Medicine, Chonnam National University Hwasun Hospital, Hwasun, Korea
| | - Myung-Geun Shin
- Department of Laboratory Medicine, Chonnam National University Hwasun Hospital, Hwasun, Korea
| | - Seung-Shin Lee
- Department of Hematology-Oncology, Chonnam National University Hwasun Hospital, Hwasun, Korea
| | - Deok-Hwan Yang
- Department of Hematology-Oncology, Chonnam National University Hwasun Hospital, Hwasun, Korea
| | - Jae-Sook Ahn
- Department of Hematology-Oncology, Chonnam National University Hwasun Hospital, Hwasun, Korea
| | - Yeo-Kyeoung Kim
- Department of Hematology-Oncology, Chonnam National University Hwasun Hospital, Hwasun, Korea
| | - Hyeoung-Joon Kim
- Department of Hematology-Oncology, Chonnam National University Hwasun Hospital, Hwasun, Korea
| | - Je-Jung Lee
- Department of Hematology-Oncology, Chonnam National University Hwasun Hospital, Hwasun, Korea
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Chakraborty R, Muchtar E, Kumar SK, Buadi FK, Dingli D, Dispenzieri A, Hayman SR, Hogan WJ, Kapoor P, Lacy MQ, Leung N, Gertz MA. Elevated pre-transplant C-reactive protein identifies a high-risk subgroup in multiple myeloma patients undergoing delayed autologous stem cell transplantation. Bone Marrow Transplant 2017; 53:155-161. [PMID: 29131152 DOI: 10.1038/bmt.2017.228] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Revised: 09/01/2017] [Accepted: 09/06/2017] [Indexed: 01/12/2023]
Abstract
The significance of elevated C-reactive protein (CRP) prior to autologous stem cell transplantation (ASCT) in multiple myeloma (MM) has not been studied. We analyzed 1111 MM patients who underwent ASCT at Mayo Clinic from 2007 to 2015. A total of 840 patients (76%) received early ASCT (⩽12 months from diagnosis) and 271 patients (24%) received delayed ASCT (>12 months from diagnosis). Elevated CRP (> upper normal limit (8 mg/L)) was seen in 14% and 22% of patients undergoing early and delayed ASCT, respectively (P=0.003). There was no correlation of CRP with pre-transplant response, bone marrow plasma cell percentage or labeling index. Patients with an elevated CRP had a higher likelihood of having circulating plasma cells prior to ASCT (33 vs 19%; P<0.001). In the early ASCT cohort, the median overall survival (OS) in patients with normal and elevated CRP was not reached and 91 months respectively (P=0.011). In the delayed ASCT cohort, the median OS in respective groups were 73 and 30 months respectively (P<0.001), with elevated CRP being an independent prognostic marker on multivariate analysis (hazard ratio 2.0; 95% confidence interval, 1.0-3.8; P=0.045). Elevated pre-transplant CRP identifies a high-risk population especially in patients undergoing delayed ASCT and should be incorporated in the pre-transplant evaluation.
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Affiliation(s)
- R Chakraborty
- Division of Hematology, Mayo Clinic, Rochester, MN, USA
| | - E Muchtar
- Division of Hematology, Mayo Clinic, Rochester, MN, USA
| | - S K Kumar
- Division of Hematology, Mayo Clinic, Rochester, MN, USA
| | - F K Buadi
- Division of Hematology, Mayo Clinic, Rochester, MN, USA
| | - D Dingli
- Division of Hematology, Mayo Clinic, Rochester, MN, USA
| | - A Dispenzieri
- Division of Hematology, Mayo Clinic, Rochester, MN, USA
| | - S R Hayman
- Division of Hematology, Mayo Clinic, Rochester, MN, USA
| | - W J Hogan
- Division of Hematology, Mayo Clinic, Rochester, MN, USA
| | - P Kapoor
- Division of Hematology, Mayo Clinic, Rochester, MN, USA
| | - M Q Lacy
- Division of Hematology, Mayo Clinic, Rochester, MN, USA
| | - N Leung
- Division of Hematology, Mayo Clinic, Rochester, MN, USA
| | - M A Gertz
- Division of Hematology, Mayo Clinic, Rochester, MN, USA
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Jung SH, Kim JS, Lee WS, Oh SJ, Ahn JS, Yang DH, Kim YK, Kim HJ, Lee JJ. Prognostic value of the inverse platelet to lymphocyte ratio (iPLR) in patients with multiple myeloma who were treated up front with a novel agent-containing regimen. Ann Hematol 2016; 95:55-61. [PMID: 26467916 DOI: 10.1007/s00277-015-2521-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Accepted: 10/04/2015] [Indexed: 01/08/2023]
Abstract
Recently, reactive thrombosis or platelet to lymphocyte ratio has been reported as a strong predictor of poor prognosis in various types of cancer. However, a study investigating the relationship between platelet counts and thrombopoietic cytokines suggested that low platelet could be important in multiple myeloma (MM), which means platelet count decreased in advanced International Staging System (ISS) stage. Therefore, we developed inverse platelet to lymphocyte ratio (iPLR) and assessed the prognostic value of iPLR in patients with MM. We retrospectively analyzed 283 patients who were treated up front with a novel agent-containing regimen. Patients were classified into three groups based on hazard ratio (HR) according to iPLR: low iPLR (group 1), middle iPLR (group 2), and high iPLR (group 3). Over a median follow-up of 34.8 months, staging by iPLR group had predictive value for progression-free survival (PFS) and overall survival (OS). In addition, staging by iPLR group was a reliable method to predict for survival in patients who presented with renal failure (eGFR<60 mL/min/1.73 m2) and in elderly patients. Multivariate analyses demonstrated that staging by iPLR group was associated with PFS and OS in patients with MM. In conclusion, this study suggested that iPLR is a simple and reliable inflammatory prognostic factor in the era of novel agents.
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Affiliation(s)
- Sung-Hoon Jung
- Department of Hematology-Oncology, Chonnam National University Hwasun Hospital, 322 Seoyangro, Hwasun, Jeollanamdo, 519-763, Republic of Korea
| | - Jin Seok Kim
- Division of Hematology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Won Sik Lee
- Hemato-oncology, Busan Paik Hospital, Inje University, Busan, Republic of Korea
| | - Suk Joong Oh
- Department of Internal Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Jae-Sook Ahn
- Department of Hematology-Oncology, Chonnam National University Hwasun Hospital, 322 Seoyangro, Hwasun, Jeollanamdo, 519-763, Republic of Korea
| | - Deok-Hwan Yang
- Department of Hematology-Oncology, Chonnam National University Hwasun Hospital, 322 Seoyangro, Hwasun, Jeollanamdo, 519-763, Republic of Korea
| | - Yeo-Kyeoung Kim
- Department of Hematology-Oncology, Chonnam National University Hwasun Hospital, 322 Seoyangro, Hwasun, Jeollanamdo, 519-763, Republic of Korea
| | - Hyeoung-Joon Kim
- Department of Hematology-Oncology, Chonnam National University Hwasun Hospital, 322 Seoyangro, Hwasun, Jeollanamdo, 519-763, Republic of Korea
| | - Je-Jung Lee
- Department of Hematology-Oncology, Chonnam National University Hwasun Hospital, 322 Seoyangro, Hwasun, Jeollanamdo, 519-763, Republic of Korea.
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Lin C, Luciani A, Belhadj K, Deux JF, Kuhnowski F, Maatouk M, Beaussart P, Cuenod CA, Haioun C, Rahmouni A. Multiple myeloma treatment response assessment with whole-body dynamic contrast-enhanced MR imaging. Radiology 2010; 254:521-31. [PMID: 20093523 DOI: 10.1148/radiol.09090629] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
PURPOSE To compare posttreatment bone marrow changes at whole-body dynamic contrast material-enhanced magnetic resonance (MR) imaging with clinical response in patients with multiple myeloma (MM) and to determine if this technique can be used to assess treatment response in patients with MM. MATERIALS AND METHODS This study was approved by an institutional review board; all patients gave informed written consent. Thirty patients (21 men, nine women; mean age, 58 years +/- 10 [standard deviation]) underwent whole-body dynamic contrast-enhanced MR imaging before treatment, after induction chemotherapy (n = 30), and after autologous stem cell transplantation (ASCT) (n = 20). Maximal percentages of bone marrow (BME(max)) and focal lesion (FLE(max)) enhancement were assessed at each MR imaging examination. Clinical responses were determined on the basis of international uniform response criteria. Posttreatment changes in BME(max)and FLE(max)were compared with clinical response to therapy by using the Mann-Whitney U test. Receiver operating characteristic (ROC) analysis of posttreatment BME(max)was used to identify poor responders. RESULTS Eleven of 30 patients were good responders to induction chemotherapy; 16 of 20 patients were good responders to ASCT. After induction chemotherapy, mean BME(max)differed between good and poor responders (94.3% vs 138.4%, respectively; P = .02). With the exclusion of results from six examinations with focal lesions in which a poor clinical response was classified but BME(max)had normalized, a posttreatment BME(max)of more than 96.8% had 100% sensitivity for the identification of poor responders (specificity, 76.9%; area under the ROC curve, 0.90; P = .0001). Mean FLE(max)after induction chemotherapy did not differ between good and poor responders. Mean timing (ie, the number of postcontrast dynamic acquisitions where FLE(max)was observed) was significantly delayed in good responders compared with poor responders (4.7 vs 2.9, P < .0001). Post-ASCT MR imaging results correctly depicted all four clinically good responders whose disease subsequently progressed. CONCLUSION With quantitative analysis of BME(max)and the timing of FLE(max), whole-body dynamic contrast-enhanced MR imaging can be used to assess treatment response in patients with MM.
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Affiliation(s)
- Chieh Lin
- Department of Medical Imaging, AP-HP, Groupe Henri-Mondor Albert-Chenevier, 51 Avenue du Malréchal de Lattre de Tassigny, 94010 Créteil, France
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Abstract
This chapter presents the epidemiologic evidence on the association between physical activity and hematologic cancers and related hypothesized biologic mechanisms. Some preliminary indications of a protective role for physical activity for non-Hodgkin's lymphoma, leukemia, multiple myeloma, and Hodgkin's lymphoma exist, but the level of epidemiologic evidence is still insufficient to make any definitive conclusions regarding the nature of these associations. Several plausible biologic mechanisms underlying the possible associations between physical activity and hematologic cancers have been proposed, including enhancement of immune function, reduction in obesity, improvement of antioxidant defense systems, impact on metabolic hormones, and anti-inflammatory effects. Future studies should improve the estimation of physical activity by using more reliable, valid, and comprehensive measurement tools, assessing all components of physical activity (type, intensity, and time period), and conducting intervention studies to evaluate the effect of physical activity on various biomarkers of cancer in order to provide further insight into plausible biologic mechanisms underlying the possible association between physical activity and hematologic cancers.
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Affiliation(s)
- Sai Yi Pan
- Centre for Chronic Disease Prevention and Control, Public Health Agency of Canada, 785 Carling Avenue, Locator: 6807B, Ottawa, Ontario, K1A 0K9, Canada
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