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Snoke DB, Bellefleur E, Rehman HT, Carson JA, Poynter ME, Dittus KL, Toth MJ. Skeletal muscle adaptations in patients with lung cancer: Longitudinal observations from the whole body to cellular level. J Cachexia Sarcopenia Muscle 2023; 14:2579-2590. [PMID: 37727010 PMCID: PMC10751417 DOI: 10.1002/jcsm.13332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 08/02/2023] [Accepted: 08/21/2023] [Indexed: 09/21/2023] Open
Abstract
BACKGROUND Cancer and its treatment can adversely affect skeletal muscle, impacting physical function, treatment response and survival. No studies, however, have comprehensively characterized these muscle adaptations longitudinally in human patients at the cellular level. METHODS We examined skeletal muscle size and function from the whole body to the sub-cellular level in 11 patients with non-small cell lung cancer (NSCLC; 6 male/5 female, mean age 58 ± 3 years) studied over a 2-month observation period starting during their first cycle of standard of care cancer treatment and in 11 age- and sex-matched healthy controls (HC) without a current or past history of cancer. Biopsies of the vastus lateralis were performed to assess muscle fibre size, contractility and mitochondrial content, along with assessments of physical function, whole muscle size and function, and circulating cytokines. RESULTS Body weight, composition and thigh muscle area and density were unaltered over time in patients with NSCLC, while muscle density was lower in patients with NSCLC versus HC (P = 0.03). Skeletal muscle fibre size decreased by 18% over time in patients (all P = 0.02) and was lower than HC (P = 0.02). Mitochondrial fractional area and density did not change over time in patients, but fractional area was lower in patients with NSCLC compared with HC (subsarcolemmal, P = 0.04; intermyofibrillar, P = 0.03). Patients with NSCLC had higher plasma concentrations of IL-6 (HC 1.40 ± 0.50; NSCLC 4.71 ± 4.22; P < 0.01), GDF-15 (HC 569 ± 166; NSCLC 2071 ± 1168; P < 0.01) and IL-8/CXCL8 (HC 4.9 ± 1.8; NSCLC 10.1 ± 6.0; P = 0.02) compared with HC, but there were no changes in inflammatory markers in patients with NSCLC over time. No changes were observed in markers of satellite cell activation or DNA damage in patients and no group differences were noted with HC. Whole-muscle strength was preserved over time in patients with NSCLC coincident with improved single fibre contractility. CONCLUSIONS This study is the first to comprehensively examine longitudinal alterations in skeletal muscle fibre size and function in patients with NSCLC and suggests that muscle fibre atrophy occurs during cancer treatment despite weight stability and no changes in conventional clinical measurements of whole body or thigh muscle size over this period.
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Affiliation(s)
- Deena B. Snoke
- Department of MedicineUniversity of Vermont Larner College of MedicineBurlingtonVermontUSA
| | - Emma Bellefleur
- Department of MedicineUniversity of Vermont Larner College of MedicineBurlingtonVermontUSA
| | - Hibba Tul Rehman
- Department of MedicineUniversity of Vermont Larner College of MedicineBurlingtonVermontUSA
- University of Vermont Cancer CenterUniversity of Vermont Larner College of MedicineBurlingtonVermontUSA
| | - James A. Carson
- Department of Physical TherapyThe University of Tennessee Health Science CenterMemphisTennesseeUSA
| | - Matthew E. Poynter
- Department of MedicineUniversity of Vermont Larner College of MedicineBurlingtonVermontUSA
| | - Kim L. Dittus
- Department of MedicineUniversity of Vermont Larner College of MedicineBurlingtonVermontUSA
- University of Vermont Cancer CenterUniversity of Vermont Larner College of MedicineBurlingtonVermontUSA
| | - Michael J. Toth
- Department of MedicineUniversity of Vermont Larner College of MedicineBurlingtonVermontUSA
- University of Vermont Cancer CenterUniversity of Vermont Larner College of MedicineBurlingtonVermontUSA
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Klassen PN, Mazurak VC, Thorlakson J, Servais S. Call for standardization in assessment and reporting of muscle and adipose change using computed tomography analysis in oncology: A scoping review. J Cachexia Sarcopenia Muscle 2023; 14:1918-1931. [PMID: 37675809 PMCID: PMC10570077 DOI: 10.1002/jcsm.13318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 07/07/2023] [Accepted: 07/24/2023] [Indexed: 09/08/2023] Open
Abstract
Investigators are increasingly measuring skeletal muscle (SM) and adipose tissue (AT) change during cancer treatment to understand impact on patient outcomes. Recent meta-analyses have reported high heterogeneity in this literature, representing uncertainty in the resulting estimates. Using the setting of palliative-intent chemotherapy as an exemplar, we aimed to systematically summarize the sources of variability among studies evaluating SM and AT change during cancer treatment and propose standards for future studies to enable reliable meta-analysis. Studies that measured computed tomography-defined SM and/or AT change in adult patients during palliative-intent chemotherapy for solid tumours were included, with no date or geographical limiters. Of 2496 publications screened by abstract/title, 83 were reviewed in full text and 38 included for extraction, representing 34 unique cohorts across 8 tumour sites. The timing of baseline measurement was frequently defined as prior to treatment, while endpoint timing ranged from 6 weeks after treatment start to time of progression. Fewer than 50% specified the actual time interval between measurements. Measurement error was infrequently discussed (8/34). A single metric (cm2 /m2 , cm2 or %) was used to describe SM change in 18/34 cohorts, while multiple metrics were presented for 10/34 and no descriptive metrics for 6/34. AT change metrics and sex-specific reporting were available for 10/34 cohorts. Associations between SM loss and overall survival were evaluated in 24 publications, with classification of SM loss ranging from any loss to >14% loss over variable time intervals. Age and sex were the most common covariates, with disease response in 50% of models. Despite a wealth of data and effort, heterogeneity in study design, reporting and statistical analysis hinders evidence synthesis regarding the severity and outcomes of SM and AT change during cancer treatment. Proposed standards for study design include selection of homogenous cohorts, clear definition of baseline/endpoint timing and attention to measurement error. Standard reporting should include baseline SM and AT by sex, actual scan interval, SM and AT change using multiple metrics and visualization of the range of change observed. Reporting by sex would advance understanding of sexual dimorphism in SM and AT change. Evaluating the impact of tissue change on outcomes requires adjustment for relevant covariates and concurrent disease response. Adoption of these standards by researchers and publishers would alter the current paradigm to enable meta-analysis of future studies and move the field towards meaningful application of SM and AT change to clinical care.
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Affiliation(s)
- Pamela N. Klassen
- Department of Agricultural, Food and Nutritional ScienceUniversity of AlbertaEdmontonABCanada
| | - Vera C. Mazurak
- Department of Agricultural, Food and Nutritional ScienceUniversity of AlbertaEdmontonABCanada
| | | | - Stephane Servais
- Department of Agricultural, Food and Nutritional ScienceUniversity of AlbertaEdmontonABCanada
- Faculté de MédecineInserm UMR1069 Nutrition Croissance et Cancer, Université de ToursTours CedexFrance
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Vedire Y, Nitsche L, Tiadjeri M, McCutcheon V, Hall J, Barbi J, Yendamuri S, Ray AD. Skeletal muscle index is associated with long term outcomes after lobectomy for non-small cell lung cancer. BMC Cancer 2023; 23:778. [PMID: 37598139 PMCID: PMC10439565 DOI: 10.1186/s12885-023-11210-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 07/23/2023] [Indexed: 08/21/2023] Open
Abstract
BACKGROUND Skeletal muscle indices have been associated with improved peri-operative outcomes after surgical resection of non-small-cell lung cancer (NSCLC). However, it is unclear if these indices can predict long term cancer specific outcomes. METHODS NSCLC patients undergoing lobectomy at our institute between 2009-2015 were included in this analysis (N = 492). Preoperative CT scans were used to quantify skeletal muscle index (SMI) at L4 using sliceOmatic software. Cox proportional modelling was performed for overall (OS) and recurrence free survival (RFS). RESULTS For all patients, median SMI was 45.7 cm2/m2 (IQR, 40-53.8). SMI was negatively associated with age (R = -0.2; p < 0.05) and positively associated with BMI (R = 0.46; P < 0.05). No association with either OS or RFS was seen with univariate cox modelling. However, multivariable modelling for SMI with patient age, gender, race, smoking status, DLCO and FEV1 (% predicted), American Society of Anesthesiology (ASA) score, tumor histology and stage, and postoperative neoadjuvant therapy showed improved OS (HR = 0.97; P = 0.0005) and RFS (HR = 0.97; P = 0.01) with SMI. Using sex specific median SMI as cutoff, a lower SMI was associated with poor OS (HR = 1.65, P = 0.001) and RFS (HR = 1.47, P = 0.03). CONCLUSIONS SMI is associated with improved outcomes after resection of NSCLC. Further studies are needed to understand the biological basis of this observation. This study provides additional rationale for designing and implementation of rehabilitation trials after surgical resection, to gain durable oncologic benefit.
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Affiliation(s)
- Yeshwanth Vedire
- Department of Thoracic Surgery, Roswell Park Comprehensive Cancer Center, Elm and Carlton Streets, Buffalo, NY, 14263, USA
| | - Lindsay Nitsche
- Department of Thoracic Surgery, Roswell Park Comprehensive Cancer Center, Elm and Carlton Streets, Buffalo, NY, 14263, USA
| | - Madeline Tiadjeri
- Department of Cancer Prevention and Control, Roswell Park Comprehensive Cancer Center, Elm and Carlton Streets, Buffalo, NY, 14263, USA
| | - Victor McCutcheon
- Department of Cancer Prevention and Control, Roswell Park Comprehensive Cancer Center, Elm and Carlton Streets, Buffalo, NY, 14263, USA
| | - Jack Hall
- Department of Cancer Prevention and Control, Roswell Park Comprehensive Cancer Center, Elm and Carlton Streets, Buffalo, NY, 14263, USA
- Department of Physical Therapy and Rehabilitation, Roswell Park Comprehensive Cancer Center, Elm and Carlton Streets, Buffalo, NY, 14263, USA
| | - Joseph Barbi
- Department of Immunology, Roswell Park Comprehensive Cancer Center, Elm and Carlton Streets, Buffalo, Ny, 14263, USA
| | - Sai Yendamuri
- Department of Thoracic Surgery, Roswell Park Comprehensive Cancer Center, Elm and Carlton Streets, Buffalo, NY, 14263, USA.
| | - Andrew D Ray
- Department of Cancer Prevention and Control, Roswell Park Comprehensive Cancer Center, Elm and Carlton Streets, Buffalo, NY, 14263, USA.
- Department of Rehabilitation, Roswell Park Comprehensive Cancer Center, Elm and Carlton Streets, Buffalo, NY, 14263, USA.
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Jogiat U, Jimoh Z, Turner SR, Baracos V, Eurich D, Bédard ELR. Sarcopenia in Lung Cancer: A Narrative Review. Nutr Cancer 2023:1-14. [PMID: 37177914 DOI: 10.1080/01635581.2023.2212425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
It has been over 10 years since the relationship between sarcopenia and lung cancer was first explored. Since then, sarcopenia research has progressed substantially, and the prognostic value of this condition is becoming increasingly apparent. Prior systematic reviews and meta-analyses have established sarcopenia to be negatively associated with disease-free and overall-survival, as well as a major risk factor for post-operative complications. The bulk of the literature has explored sarcopenia in the resectable setting, with less emphasis placed on studies evaluating this condition in advanced disease. In this up-to-date review, an examination of the literature exploring the association between sarcopenia and long-term outcomes in advanced lung cancer is provided. We further explore the association between adverse events of medical therapy and the role of sarcopenia as a predictor of tumor response. Finally, the interventions on sarcopenia and cancer cachexia are reviewed, with an emphasis placed on prospective studies.
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Affiliation(s)
- Uzair Jogiat
- Division of Thoracic Surgery, Department of Surgery, University of Alberta, Edmonton, Canada
| | | | - Simon R Turner
- Division of Thoracic Surgery, Department of Surgery, University of Alberta, Edmonton, Canada
| | - Vickie Baracos
- Division of Palliative Care Medicine, Department of Oncology, University of Alberta, Edmonton, Canada
| | - Dean Eurich
- School of Public Health, University of Alberta, Edmonton, Canada
| | - Eric L R Bédard
- Division of Thoracic Surgery, Department of Surgery, University of Alberta, Edmonton, Canada
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Xu T, Li ZH, Liu T, Jiang CH, Zhang YJ, Li H, Jiang Y, Zhao J, Guo WJ, Guo JY, Wang L, Li JX, Shen J, Jin GW, Zhang ZW, Li QF. Progress in Research on Antitumor Drugs and Dynamic Changes in Skeletal Muscles. Front Pharmacol 2022; 13:893333. [PMID: 35873591 PMCID: PMC9298970 DOI: 10.3389/fphar.2022.893333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Accepted: 06/08/2022] [Indexed: 11/24/2022] Open
Abstract
Objective: To review the research progress of reltionship between antitumor drugs and the dynamic changes of the skeletal muscles during treatment phase. Background: Sarcopenia is a common disease in patients with tumors, and it has been agreed that patients with tumors and sarcopenia experience more serious adverse reactions and have a shorter long-term survival after antitumor therapy than patients without sarcopenia. Antitumor drugs whilst beneficial for tumor regression, interferes and synergizes with cancer-induced muscle wasting/sarcopenia, induced myodemia or intramuscular fat and the two conditions often overlap making it difficult to drive conclusions. In recent years, increasing attention has been paid to the dynamic changes in skeletal muscles during antitumor drug therapy. Dynamic changes refer not only measurement skeletal muscle quantity at baseline level, but give more emphasis on the increasing or decreasing level during or end of the whole treatment course. Methods: We retrievaled published English-language original research articles via pubmed, those studies mainly focused on repeated measurements of skeletal muscle index using computed tomography (CT) in cancer patients who received antitumor drug treatment but not received interventions that produced muscle mass change (such as exercise and nutritional interventions). Conclusion: This article will summarize the research progress to date. Most of antineoplastic drug cause skeletal muscle loss during the treatment course, loss of L3 skeletal muscle index is always associated with poor clinical outcomes.
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Affiliation(s)
- Ting Xu
- Ordos Clinical College, Inner Mongolia Medical University, Ordos, China
| | - Zhen-Hao Li
- School of Public Health and Management, Wenzhou Medical University, Wenzhou, China
| | - Ting Liu
- Department of Medical Oncology, Ordos Central Hospital, Ordos, China
| | - Cai-Hong Jiang
- Department of Medical Oncology, Ordos Central Hospital, Ordos, China
| | - Ya-Juan Zhang
- Department of Medical Oncology, Ordos Central Hospital, Ordos, China
| | - Hui Li
- Department of Medical Oncology, Ordos Central Hospital, Ordos, China
| | - Ying Jiang
- Department of Medical Oncology, Ordos Central Hospital, Ordos, China
| | - Juan Zhao
- Department of Medical Oncology, Ordos Central Hospital, Ordos, China
| | - Wen-Jing Guo
- Department of Medical Oncology, Ordos Central Hospital, Ordos, China
| | - Jia-Yuan Guo
- Ordos Clinical College, Inner Mongolia Medical University, Ordos, China
| | - Lu Wang
- Ordos Clinical College, Inner Mongolia Medical University, Ordos, China
| | - Jia-Xuan Li
- Ordos Clinical College, Inner Mongolia Medical University, Ordos, China
| | - Jing Shen
- Ordos Clinical College, Baotou Medical College, Ordos, China
| | - Gao-Wa Jin
- Department of Medical Oncology, Ordos Central Hospital, Ordos, China
| | - Ze-Wei Zhang
- State Key Laboratory of Oncology in South China, Department of Radiation Oncology, Sun Yat-sen University Cancer Center, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Quan-Fu Li
- Department of Medical Oncology, Ordos Central Hospital, Ordos, China
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Pan XL, Li HJ, Li Z, Li ZL. Prognostic value of computed tomography derived skeletal muscle mass index in lung cancer: A meta-analysis. World J Clin Cases 2022; 10:6927-6935. [PMID: 36051119 PMCID: PMC9297422 DOI: 10.12998/wjcc.v10.i20.6927] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Revised: 01/26/2022] [Accepted: 05/22/2022] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND The prognostic role of the skeletal muscle mass index (SMI) derived from computed tomography (CT) imaging been well verified in several types of cancers. However, whether the SMI could serve as a reliable and valuable predictor of long-term survival in lung cancer patients remains unclear.
AIM To identify the prognostic value of the CT-derived SMI in lung cancer patients.
METHODS The PubMed, Web of Science, and Embase electronic databases were searched up to November 5, 2021 for relevant studies. The Reference Citation Analysis databases were used during the literature searching and selection. Hazard ratios (HRs) and 95% confidence intervals (CIs) were calculated to assess the association of the SMI with the overall survival (OS) of lung cancer patients. All statistical analyses were performed with STATA 12.0 software.
RESULTS A total of 12 studies involving 3002 patients were included. The pooled results demonstrated that a lower SMI was significantly related to poorer OS (HR = 1.23, 95%CI: 1.11-1.37, P < 0.001). In addition, the subgroup analyses stratified by treatment (nonsurgery vs surgery), tumor stage (advanced stage vs early stage), and tumor type (non-small cell lung cancer vs lung cancer) showed similar results.
CONCLUSION The CT-derived SMI is a novel and valuable prognostic indicator in lung cancer and might contribute to the clinical management and treatment of lung cancer patients.
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Affiliation(s)
- Xue-Lin Pan
- Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, Sichuan Province, China
| | - Hong-Jun Li
- West China Hospital of Medicine, Sichuan University, Chengdu 610041, Sichuan Province, China
| | - Zhen Li
- Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, Sichuan Province, China
| | - Zhen-Lin Li
- Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, Sichuan Province, China
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Detopoulou P, Voulgaridou G, Papadopoulou S. Cancer, Phase Angle and Sarcopenia: The Role of Diet in Connection with Lung Cancer Prognosis. Lung 2022; 200:347-379. [PMID: 35616720 DOI: 10.1007/s00408-022-00536-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 04/07/2022] [Indexed: 12/12/2022]
Abstract
Lung cancer is the most common cause of cancer death and is associated with malnutrition and sarcopenia. The detection of sarcopenia and conduction of simple body composition measurements, such as the phase angle (PhA) deriving from bioelectrical impedance analysis (BIA), can help to early identify, monitor, prevent and treat malnutrition. The present review aims to clarify the relationship between PhA and sarcopenia with the pathophysiology, clinical outcomes, and therapeutic aspects of lung cancer. PhA and sarcopenia are connected to lung cancer prognosis through various mechanisms including inflammation and oxidative stress, although more research is needed to identify the critical thresholds for increased mortality risk. Moreover, emphasis is given on the role of dietary interventions (oral nutritional supplementation, and dietary counseling) to manage sarcopenia and related variables in patients with lung cancer. Oral nutritional supplements and/or those containing n - 3 polyunsaturated fatty acids may have a positive effect on physical strength measures and muscle mass if administered at the beginning of chemotherapy. Data on sole dietary counseling or multimodal interventions are less promising so far. In the future, sophisticated body composition phenotypes deriving from the described methods along with artificial intelligence techniques could be used to design personalized nutrition interventions and timely treat these patients.
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Affiliation(s)
- Paraskevi Detopoulou
- Department of Clinical Nutrition, General Hospital Korgialenio Benakio, Athens, Greece.,Department of Nutritional Science and Dietetics, University of the Peloponnese, Kalamata, Greece
| | - Gavriela Voulgaridou
- Department of Nutritional Sciences and Dietetics, International Hellenic University, Sindos, Thessaloniki, Greece
| | - Sousana Papadopoulou
- Department of Nutritional Sciences and Dietetics, International Hellenic University, Sindos, Thessaloniki, Greece.
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Lee J, Kim EY, Kim E, Kim KG, Kim YJ, Kim YS, Ahn HK, Lee SW. Longitudinal changes in skeletal muscle mass in patients with advanced squamous cell lung cancer. Thorac Cancer 2021; 12:1662-1667. [PMID: 33829665 PMCID: PMC8169285 DOI: 10.1111/1759-7714.13958] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Accepted: 03/21/2021] [Indexed: 12/11/2022] Open
Abstract
Background Skeletal muscle depletion (sarcopenia) is associated with poor prognosis in patients with lung cancer. We analyzed changes in skeletal muscle area using serial computed tomography (CT) until the death of patients with advanced squamous cell lung cancer (SQCLC). Methods This retrospective study comprised 70 consecutive patients who underwent palliative chemotherapy for SQCLC. The cross‐sectional area of the skeletal muscle at the level of the first lumbar vertebra (L1) was measured using chest CT. An artificial intelligence algorithm was developed and used for the serial assessment of the muscle area. Sarcopenia was defined as an L1 skeletal muscle index <46 cm2/m2 in men and < 29 cm2/m2 in women. Results The median age was 69 years; 62 patients (89%) had metastatic disease at the time of initial diagnosis. Sarcopenia was present in 58 patients (82.9%) at baseline; all patients experienced net muscle loss over the disease trajectory. The median overall survival was 8.7 (95% confidence interval 5.9–11.5) months. The mean percentage loss of skeletal muscle between the first and last CT was 16.5 ± 11.0%. Skeletal muscle loss accelerated over time and was the highest in the last 3 months of life (p < 0.001). Patients losing skeletal muscle rapidly (upper tertile, >3.24 cm2/month) had shorter overall survival than patients losing skeletal muscle slowly (median, 5.7 vs. 12.0 months, p < 0.001). Conclusions Patients with advanced SQCLC lose a significant amount of skeletal muscle until death. The rate of muscle area reduction is faster at the end of life. Patients with advanced SQCLC lose a significant amount of skeletal muscle until death. The rate of muscle area reduction is faster at the end of life.
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Affiliation(s)
- Jongsoo Lee
- Department of Radiology, Gil Medical Center, Gachon University College of Medicine, Incheon, Republic of Korea
| | - Eun Young Kim
- Department of Radiology, Gil Medical Center, Gachon University College of Medicine, Incheon, Republic of Korea
| | - Eunji Kim
- Department of Biomedical Engineering, Gachon University College of Medicine, Incheon, Republic of Korea
| | - Kwang Gi Kim
- Department of Biomedical Engineering, Gachon University College of Medicine, Incheon, Republic of Korea
| | - Young Jae Kim
- Department of Biomedical Engineering, Gachon University College of Medicine, Incheon, Republic of Korea
| | - Young Saing Kim
- Department of Internal Medicine, Gil Medical Center, Gachon University College of Medicine, Incheon, Republic of Korea
| | - Hee Kyung Ahn
- Department of Internal Medicine, Gil Medical Center, Gachon University College of Medicine, Incheon, Republic of Korea
| | - Sang-Woong Lee
- Division of Software, School of AI-SW, Gachon University, Seongnam, Republic of Korea
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