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Xin S, Wen M, Tian Y, Dong H, Wan Z, Jiang S, Meng F, Xiong Y, Han Y. Impact of histopathological subtypes on invasive lung adenocarcinoma: from epidemiology to tumour microenvironment to therapeutic strategies. World J Surg Oncol 2025; 23:66. [PMID: 40016762 PMCID: PMC11866629 DOI: 10.1186/s12957-025-03701-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2024] [Accepted: 02/02/2025] [Indexed: 03/01/2025] Open
Abstract
Lung adenocarcinoma is the most prevalent type of lung cancer, with invasive lung adenocarcinoma being the most common subtype. Screening and early treatment of high-risk individuals have improved survival; however, significant differences in prognosis still exist among patients at the same stage, especially in the early stages. Invasive lung adenocarcinoma has different histological morphologies and biological characteristics that can distinguish its prognosis. Notably, several studies have found that the pathological subtypes of invasive lung adenocarcinoma are closely associated with clinical treatment. This review summarised the distribution of various pathological subtypes of invasive lung adenocarcinoma in the population and their relationship with sex, smoking, imaging features, and other histological characteristics. We comprehensively analysed the genetic characteristics and biomarkers of the different pathological subtypes of invasive lung adenocarcinoma. Understanding the interaction between the pathological subtypes of invasive lung adenocarcinoma and the tumour microenvironment helps to reveal new therapeutic targets for lung adenocarcinoma. We also extensively reviewed the prognosis of various pathological subtypes and their effects on selecting surgical methods and adjuvant therapy and explored future treatment strategies.
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Affiliation(s)
- Shaowei Xin
- Department of Thoracic Surgery, Air Force Medical Center, Fourth Military Medical University, Beijing, China
- Department of Thoracic Surgery, 962 Hospital of the Joint Logistics Support Force, Harbin, China
| | - Miaomiao Wen
- Department of Thoracic Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Yahui Tian
- Department of Thoracic Surgery, Air Force Medical Center, Fourth Military Medical University, Beijing, China
| | - Honghong Dong
- Department of Thoracic Surgery, Air Force Medical Center, Fourth Military Medical University, Beijing, China
| | - Zitong Wan
- Department of Thoracic Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
- College of Life Sciences, Northwestern University, Xi'an, 710069, China
| | - Suxin Jiang
- Department of Thoracic Surgery, Air Force Medical Center, Fourth Military Medical University, Beijing, China
| | - Fancheng Meng
- Department of Thoracic Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Yanlu Xiong
- Department of Thoracic Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China.
- Innovation Center for Advanced Medicine, Tangdu Hospital, Fourth Military Medical University, Xi'an, China.
- Department of Thoracic Surgery, First Medical Center, Chinese PLA General Hospital and PLA Medical School, Beijing, China.
- Department of Thoracic Surgery, Tangdu Hospital, Fourth Military Medical University, 569 Xinsi Road, Baqiao District, Shaanxi, , Xi'an, 710038, China.
| | - Yong Han
- Department of Thoracic Surgery, Air Force Medical Center, Fourth Military Medical University, Beijing, China.
- Department of Thoracic Surgery, Air Force Medical Center, Fourth Military Medical University, 30 Fucheng Road, Haidian District, Shaanxi, , Beijing, 100142, China.
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Driussi A, Lamaze FC, Kordahi M, Armero VS, Gaudreault N, Orain M, Enlow W, Abbosh C, Hodgson D, Dasgupta A, Gagné A, Bossé Y, Joubert P. Clinicopathological Predictors of the Presence of Blood Circulating Tumor DNA in Early-Stage Non-Small Cell Lung Cancers. Mod Pathol 2025; 38:100744. [PMID: 40020968 DOI: 10.1016/j.modpat.2025.100744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2024] [Revised: 02/12/2025] [Accepted: 02/12/2025] [Indexed: 03/03/2025]
Abstract
The implementation of lung cancer screening programs across the world has drawn considerable attention to improving early-stage lung cancer detection and prognostication. Several blood-based assays detecting circulating tumor DNA (ctDNA) recently emerged as noninvasive methods to detect malignancies. However, their limited sensitivity and predictive value remain a hurdle to their clinical use. We aimed to evaluate the association between clinicopathological parameters and presurgical ctDNA detection in clinical stage I non-small cell lung cancer patients to further understand ctDNA shedding biology. The cohort included 180 adenocarcinomas (LUAD) and 80 squamous cell carcinomas (LUSC) stage I patients who underwent lung cancer resection. Patients' clinical and pathological features were collected. A multicancer early-detection test (GRAIL LLC) was used to detect ctDNA using targeted methylation patterns. The association between the cell-free DNA tumor methylated fraction (TMeF) and the clinicopathological predictors was evaluated using univariate and multivariate modeling. LUSC was associated with a higher TMeF than LUAD. Pathological stage, tumor grade, and tumor volume were key determinants of ctDNA detection in both LUSC and LUAD. In LUAD, ctDNA detection also correlated with histologic pattern composition, necrosis, acute inflammation, and, to a lesser degree, spread through alveolar spaces and lymphovascular invasion. Based on our results, we propose classification methods for both LUAD (using histologic pattern composition) and LUSC (using tumor grade and pathological stage) to identify patients likely to have high ctDNA levels. These results confirm previous findings and suggest that previously unidentified factors, including histologic pattern composition and acute inflammation, influence ctDNA levels. These results will help in understanding the ctDNA shedding process and may allow identification of patients eligible for ctDNA detection-based follow-up.
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Affiliation(s)
- Arnaud Driussi
- Institut universitaire de cardiologie et de pneumologie de Québec - Université Laval, Quebec City, Canada
| | - Fabien C Lamaze
- Institut universitaire de cardiologie et de pneumologie de Québec - Université Laval, Quebec City, Canada
| | - Manal Kordahi
- Institut universitaire de cardiologie et de pneumologie de Québec - Université Laval, Quebec City, Canada
| | - Victoria Saavedra Armero
- Institut universitaire de cardiologie et de pneumologie de Québec - Université Laval, Quebec City, Canada
| | - Nathalie Gaudreault
- Institut universitaire de cardiologie et de pneumologie de Québec - Université Laval, Quebec City, Canada
| | - Michèle Orain
- Institut universitaire de cardiologie et de pneumologie de Québec - Université Laval, Quebec City, Canada
| | - William Enlow
- Institut universitaire de cardiologie et de pneumologie de Québec - Université Laval, Quebec City, Canada
| | - Chris Abbosh
- Translational Medicine Early Oncology, AstraZeneca, Cambridge, United Kingdom
| | - Darren Hodgson
- Translational Medicine Early Oncology, AstraZeneca, Cambridge, United Kingdom
| | - Abhijit Dasgupta
- Oncology Data Science, Oncology R&D, AstraZeneca, Gaithersburg, Maryland
| | - Andréanne Gagné
- Institut universitaire de cardiologie et de pneumologie de Québec - Université Laval, Quebec City, Canada
| | - Yohan Bossé
- Institut universitaire de cardiologie et de pneumologie de Québec - Université Laval, Quebec City, Canada; Department of Molecular Medicine, Université Laval, Quebec City, Canada
| | - Philippe Joubert
- Institut universitaire de cardiologie et de pneumologie de Québec - Université Laval, Quebec City, Canada; Department of Molecular Biology, Pathology and Medical Biochemistry, Université Laval, Quebec City, Canada.
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Qu H, Li J, Zeng R, Du M. The presence of a cribriform pattern is related to poor prognosis in lung adenocarcinoma after surgical resection: A meta-analysis. Gen Thorac Cardiovasc Surg 2024; 72:553-561. [PMID: 38801566 DOI: 10.1007/s11748-024-02044-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Accepted: 05/18/2024] [Indexed: 05/29/2024]
Abstract
OBJECTIVE Previous studies reported that the cribriform pattern (CP) was associated with poor prognosis in lung adenocarcinoma (ADC) patients; therefore, a meta-analysis was performed to thoroughly evaluate the prognostic impact of cribriform pattern in postoperative ADC patients. METHODS Eligible studies were retrieved from PubMed, Embase databases, and Web of Science until April 2023. Studies evaluating the effect of the cribriform pattern on the prognosis of postoperative ADC patients were included. Subsequently, subgroup analysis was conducted according to the proportion of the cribriform pattern, with disease-free survival (DFS) and/or overall survival (OS) as outcomes. Hazard ratios (HRs) and 95% confidence intervals (CIs) were used as effect estimates in the meta-analyses, which were performed with a random-effects model despite the heterogeneity. RESULTS Nine studies published between 2015 and 2022 were included, with 4,289 ADC patients in total. The pooled results revealed a significantly poorer DFS (HR1.56, 95%CI 1.18-2.06, P = 0.11, I2 = 45%) and OS (HR2.11, 95%CI 1.63-2.72, P = 0.01, I2 = 56%) in patients with the cribriform pattern. Furthermore, the subgroup analysis showed that patients with a cribriform pattern (DFS: HR1.32, 95% CI 1.04-1.68 OS:HR2.30, 95% CI 1.55-3.39) and patients with a predominantly cribriform pattern (DFS:HR2.04, 95% CI 1.32--3.15 OS: HR1.92, 95% CI 1.41-2.61) were associated with poor prognosis. CONCLUSIONS The presence of a cribriform pattern is related to poor prognosis in postoperative ADC patients, despite not being a main tumor component. However, the results should be confirmed by large-scale and prospective studies owing to the small sample and potential heterogeneity.
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Affiliation(s)
- Haoran Qu
- Department of Cardiothoracic Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Jianfeng Li
- Department of Cardiothoracic Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Rui Zeng
- Department of Cardiothoracic Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Ming Du
- Department of Cardiothoracic Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China.
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Travis WD, Eisele M, Nishimura KK, Aly RG, Bertoglio P, Chou TY, Detterbeck FC, Donnington J, Fang W, Joubert P, Kernstine K, Kim YT, Lievens Y, Liu H, Lyons G, Mino-Kenudson M, Nicholson AG, Papotti M, Rami-Porta R, Rusch V, Sakai S, Ugalde P, Van Schil P, Yang CFJ, Cilento VJ, Yotsukura M, Asamura H. The International Association for the Study of Lung Cancer (IASLC) Staging Project for Lung Cancer: Recommendation to Introduce Spread Through Air Spaces as a Histologic Descriptor in the Ninth Edition of the TNM Classification of Lung Cancer. Analysis of 4061 Pathologic Stage I NSCLC. J Thorac Oncol 2024; 19:1028-1051. [PMID: 38508515 DOI: 10.1016/j.jtho.2024.03.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 03/06/2024] [Accepted: 03/13/2024] [Indexed: 03/22/2024]
Abstract
INTRODUCTION Spread through air spaces (STAS) consists of lung cancer tumor cells that are identified beyond the edge of the main tumor in the surrounding alveolar parenchyma. It has been reported by meta-analyses to be an independent prognostic factor in the major histologic types of lung cancer, but its role in lung cancer staging is not established. METHODS To assess the clinical importance of STAS in lung cancer staging, we evaluated 4061 surgically resected pathologic stage I R0 NSCLC collected from around the world in the International Association for the Study of Lung Cancer database. We focused on whether STAS could be a useful additional histologic descriptor to supplement the existing ones of visceral pleural invasion (VPI) and lymphovascular invasion (LVI). RESULTS STAS was found in 930 of 4061 of the pathologic stage I NSCLC (22.9%). Patients with tumors exhibiting STAS had a significantly worse recurrence-free and overall survival in both univariate and multivariable analyses involving cohorts consisting of all NSCLC, specific histologic types (adenocarcinoma and other NSCLC), and extent of resection (lobar and sublobar). Interestingly, STAS was independent of VPI in all of these analyses. CONCLUSIONS These data support our recommendation to include STAS as a histologic descriptor for the Ninth Edition of the TNM Classification of Lung Cancer. Hopefully, gathering these data in the coming years will facilitate a thorough analysis to better understand the relative impact of STAS, LVI, and VPI on lung cancer staging for the Tenth Edition TNM Stage Classification.
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Affiliation(s)
- William D Travis
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, New York.
| | - Megan Eisele
- Cancer Research And Biostatistics (CRAB), Seattle, Washington
| | | | - Rania G Aly
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Pietro Bertoglio
- IRCCS Azienda Ospedaliero Universitaria di Bologna, Bologna, Italy
| | - Teh-Ying Chou
- Department of Pathology and Laboratory Medicine, Taipei, Veterans General Hospital, Taipei, Taiwan
| | | | | | - Wentao Fang
- Department of Thoracic Surgery, Shanghai Chest Hospital, Jiaotong University Medical School, Shanghai, People's Republic of China
| | - Philippe Joubert
- Institut Universitaire de Cardiologie et de Pneumologie de Quebec - Université Laval, Quebec City, Canada
| | - Kemp Kernstine
- Department of Cardiovascular and Thoracic Surgery, The University of Texas Southwestern Medical Center, Dallas, Texas
| | - Young Tae Kim
- Department of Thoracic and Cardiovascular Surgery, Seoul National University Hospital, Cancer Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Yolande Lievens
- Radiation Oncology, Ghent University Hospital and Ghent University, Gent, Belgium
| | - Hui Liu
- Department of Radiation Oncology, Sun Yat-Sen University Cancer Center, Guangdong, People's Republic of China
| | - Gustavo Lyons
- Buenos Aires British Hospital, Buenos Aires, Argentina
| | - Mari Mino-Kenudson
- Department of Pathology, Massachusetts General Hospital, Boston, Massachusetts
| | - Andrew G Nicholson
- Department of Histopathology, Royal Brompton Hospital, London, United Kingdom
| | - Mauro Papotti
- Department of Oncology, University of Turin, Torino, Italy
| | - Ramon Rami-Porta
- Department of Thoracic Surgery, Hospital Universitari Mútua Terrassa, University of Barcelona, and CIBERES Lung Cancer Group, Terrassa, Barcelona, Spain
| | - Valerie Rusch
- Thoracic Surgery Service, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Shuji Sakai
- Tokyo Women's Medical University, Tokyo, Japan
| | - Paula Ugalde
- Brigham & Women's Hospital, Boston, Massachusetts
| | - Paul Van Schil
- Antwerp University and Antwerp University Hospital, (Edegem) Antwerp, Belgium
| | - Chi-Fu Jeffrey Yang
- Massachusetts General Hospital/Harvard Medical School, Boston, Massachusetts
| | | | - Masaya Yotsukura
- Department of Thoracic Surgery, National Cancer Center Hospital, Tokyo, Japan
| | - Hisao Asamura
- Department of Thoracic Surgery, Keio University, Tokyo, Japan
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Moreira AL, Zhou F. Invasion and Grading of Pulmonary Non-Mucinous Adenocarcinoma. Surg Pathol Clin 2024; 17:271-285. [PMID: 38692810 DOI: 10.1016/j.path.2023.11.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2024]
Abstract
Lung adenocarcinoma staging and grading were recently updated to reflect the link between histologic growth patterns and outcomes. The lepidic growth pattern is regarded as "in-situ," whereas all other patterns are regarded as invasive, though with stratification. Solid, micropapillary, and complex glandular patterns are associated with worse prognosis than papillary and acinar patterns. These recent changes have improved prognostic stratification. However, multiple pitfalls exist in measuring invasive size and in classifying lung adenocarcinoma growth patterns. Awareness of these limitations and recommended practices will help the pathology community achieve consistent prognostic performance and potentially contribute to improved patient management.
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Affiliation(s)
- Andre L Moreira
- Department of Pathology, New York University Grossman School of Medicine, 560 First Avenue, New York, NY 10016, USA.
| | - Fang Zhou
- Department of Pathology, New York University Grossman School of Medicine, 560 First Avenue, New York, NY 10016, USA
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Pyo JS, Lee BH, Min KW, Kim NY. Clinicopathological significances of cribriform pattern in lung adenocarcinoma. Pathol Res Pract 2024; 253:155035. [PMID: 38171080 DOI: 10.1016/j.prp.2023.155035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 12/07/2023] [Accepted: 12/08/2023] [Indexed: 01/05/2024]
Abstract
The present study aimed to investigate the clinicopathological and prognostic implications of the cribriform pattern in lung adenocarcinoma through a meta-analysis. The estimated rates of cribriform pattern in lung adenocarcinomas were investigated. The correlations between cribriform pattern and clinicopathological characteristics, including genetic alterations and prognosis were evaluated. The estimated rate of cribriform pattern was 0.150 (95% confidence interval [CI], 0.101-0.218) in lung adenocarcinoma. The estimated rates of cribriform pattern in the 5% and 10% criteria were 0.230 (95% CI 0.125-0.386) and 0.130 (95% CI 0.062-0.252), respectively. The presence of cribriform pattern was significantly correlated with larger tumor size (> 30 mm), spread through air spaces, and lymph node metastasis (P < 0.001, P < 0.001, and P = 0.007, respectively, in the meta-regression test). There were no significant differences between cribriform pattern, smoking history, and vascular and lymphatic invasion. In lung adenocarcinoma with cribriform pattern, the estimated rates of ALK rearrangement, KRAS, and EGFR mutations were 0.407 (95% CI 0.165-0.704), 0.330 (95% CI 0.117-0.646), and 0.249 (95% CI 0.125-0.437), respectively. ALK rearrangement was significantly more frequent in lung adenocarcinomas with cribriform pattern than in those without. The overall survival rate was significantly worse in lung adenocarcinomas with a cribriform pattern than in those without (hazard ratio 2.051, 95% CI 1.369-3.075). In conclusion, the presence of a cribriform pattern can be a useful predictor of the clinicopathological characteristics and prognosis of patients with lung adenocarcinoma.
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Affiliation(s)
- Jung-Soo Pyo
- Department of Pathology, Uijeongbu Eulji Medical Center, Eulji University School of Medicine, Gyeonggi-do, Republic of Korea
| | - Byoung-Hoon Lee
- Department of Internal Medicine, Uijeongbu Eulji Medical Center, Eulji University School of Medicine, Gyeonggi-do, Republic of Korea
| | - Kyueng-Whan Min
- Department of Pathology, Uijeongbu Eulji Medical Center, Eulji University School of Medicine, Gyeonggi-do, Republic of Korea
| | - Nae Yu Kim
- Department of Internal Medicine, Uijeongbu Eulji Medical Center, Eulji University School of Medicine, Gyeonggi-do, Republic of Korea.
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Ohtani-Kim SJY, Taki T, Tane K, Miyoshi T, Samejima J, Aokage K, Nagasaki Y, Kojima M, Sakashita S, Watanabe R, Sakamoto N, Goto K, Tsuboi M, Ishii G. Efficacy of Preoperative Biopsy in Predicting the Newly Proposed Histologic Grade of Resected Lung Adenocarcinoma. Mod Pathol 2023; 36:100209. [PMID: 37149221 DOI: 10.1016/j.modpat.2023.100209] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 04/05/2023] [Accepted: 04/25/2023] [Indexed: 05/08/2023]
Abstract
A novel histologic grading system for invasive lung adenocarcinomas (LUAD) has been newly proposed and adopted by the World Health Organization (WHO) classification. We aimed to evaluate the concordance of newly established grades between preoperative biopsy and surgically resected LUAD samples. Additionally, factors affecting the concordance rate and its prognostic impact were also analyzed. In this study, surgically resected specimens of 222 patients with invasive LUAD and their preoperative biopsies collected between January 2013 and December 2020 were used. We determined the histologic subtypes of preoperative biopsy and surgically resected specimens and classified them separately according to the novel WHO grading system. The overall concordance rate of the novel WHO grades between preoperative biopsy and surgically resected samples was 81.5%, which was higher than that of the predominant subtype. When stratified by grades, the concordance rate of grades 1 (well-differentiated, 84.2%) and 3 (poorly differentiated, 89.1%) was found to be superior compared to grade 2 (moderately differentiated, 66.2%). Overall, the concordance rate was not significantly different from biopsy characteristics, including the number of biopsy samples, biopsy sample size, and tumor area size. On the other hand, the concordance rate of grades 1 and 2 was significantly higher in tumors with smaller invasive diameters, and that of grade 3 was significantly higher in tumors with larger invasive diameters. Preoperative biopsy specimens can predict the novel WHO grades, especially grades 1 and 3 of surgically resected specimens, more accurately than the former grading system, regardless of preoperative biopsy or clinicopathologic characteristics.
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Affiliation(s)
- Seiyu Jeong-Yoo Ohtani-Kim
- Department of Pathology and Clinical Laboratories, National Cancer Center Hospital East, Kashiwa, Chiba, Japan; Department of Thoracic Surgery, National Cancer Center Hospital East, Kashiwa, Chiba, Japan; Course of Advanced Clinical Research of Cancer, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Tetsuro Taki
- Department of Pathology and Clinical Laboratories, National Cancer Center Hospital East, Kashiwa, Chiba, Japan.
| | - Kenta Tane
- Department of Thoracic Surgery, National Cancer Center Hospital East, Kashiwa, Chiba, Japan
| | - Tomohiro Miyoshi
- Department of Thoracic Surgery, National Cancer Center Hospital East, Kashiwa, Chiba, Japan
| | - Joji Samejima
- Department of Thoracic Surgery, National Cancer Center Hospital East, Kashiwa, Chiba, Japan
| | - Keiju Aokage
- Department of Thoracic Surgery, National Cancer Center Hospital East, Kashiwa, Chiba, Japan
| | - Yusuke Nagasaki
- Department of Pathology and Clinical Laboratories, National Cancer Center Hospital East, Kashiwa, Chiba, Japan; Department of Thoracic Surgery, National Cancer Center Hospital East, Kashiwa, Chiba, Japan; Course of Advanced Clinical Research of Cancer, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Motohiro Kojima
- Department of Pathology and Clinical Laboratories, National Cancer Center Hospital East, Kashiwa, Chiba, Japan
| | - Shingo Sakashita
- Department of Pathology and Clinical Laboratories, National Cancer Center Hospital East, Kashiwa, Chiba, Japan
| | - Reiko Watanabe
- Department of Pathology and Clinical Laboratories, National Cancer Center Hospital East, Kashiwa, Chiba, Japan
| | - Naoya Sakamoto
- Department of Pathology and Clinical Laboratories, National Cancer Center Hospital East, Kashiwa, Chiba, Japan
| | - Koichi Goto
- Department of Thoracic Oncology, National Cancer Center Hospital East, Kashiwa, Japan
| | - Masahiro Tsuboi
- Department of Thoracic Surgery, National Cancer Center Hospital East, Kashiwa, Chiba, Japan
| | - Genichiro Ishii
- Department of Pathology and Clinical Laboratories, National Cancer Center Hospital East, Kashiwa, Chiba, Japan; Course of Advanced Clinical Research of Cancer, Juntendo University Graduate School of Medicine, Tokyo, Japan
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Bossé Y, Gagné A, Althakfi WA, Orain M, Couture C, Trahan S, Pagé S, Joubert D, Fiset PO, Desmeules P, Joubert P. A Simplified Version of the IASLC Grading System for Invasive Pulmonary Adenocarcinomas With Improved Prognosis Discrimination. Am J Surg Pathol 2023; 47:686-693. [PMID: 37032554 PMCID: PMC10174103 DOI: 10.1097/pas.0000000000002040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
Abstract
Tumor grading enables better management of patients and treatment options. The International Association for the Study of Lung Cancer (IASLC) Pathology Committee has recently released a 3-tier grading system for invasive pulmonary adenocarcinoma consisting of predominant histologic patterns plus a cutoff of 20% of high-grade components including solid, micropapillary, and complex glandular patterns. The goal of this study was to validate the prognostic value of the new IASLC grading system and to compare its discriminatory performance to the predominant pattern-based grading system and a simplified version of the IASLC grading system without complex glandular patterns. This was a single-site retrospective study based on a 20-year data collection of patients that underwent lung cancer surgery. All invasive pulmonary adenocarcinomas confirmed by the histologic review were evaluated in a discovery cohort (n=676) and a validation cohort (n=717). The median duration of follow-up in the combined dataset (n=1393) was 7.5 years. The primary outcome was overall survival after surgery. The 3 grading systems had strong and relatively similar predictive performance, but the best parsimonious model was the simplified IASLC grading system (log-rank P =1.39E-13). The latter was strongly associated with survival in the validation set ( P =1.1E-18) and the combined set ( P =5.01E-35). We observed a large proportion of patients upgraded to the poor prognosis group using the IASLC grading system, which was attenuated when using the simplified IASLC grading system. In conclusion, we identified a histologic simpler classification for invasive pulmonary adenocarcinomas that outperformed the recently proposed IASLC grading system. A simplified grading system is clinically convenient and will facilitate widespread implementation.
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Affiliation(s)
- Yohan Bossé
- Institut universitaire de cardiologie et de pneumologie de Québec—Université Laval
- Department of Molecular Medicine, Laval University, Quebec City
| | - Andréanne Gagné
- Institut universitaire de cardiologie et de pneumologie de Québec—Université Laval
| | - Wajd A. Althakfi
- Department of Pathology, King Saud University, Riyadh, Saudi Arabia
| | - Michèle Orain
- Institut universitaire de cardiologie et de pneumologie de Québec—Université Laval
| | - Christian Couture
- Institut universitaire de cardiologie et de pneumologie de Québec—Université Laval
| | - Sylvain Trahan
- Institut universitaire de cardiologie et de pneumologie de Québec—Université Laval
| | - Sylvain Pagé
- Institut universitaire de cardiologie et de pneumologie de Québec—Université Laval
| | - David Joubert
- Faculty of Social Sciences, University of Ottawa, Ottawa, Canada
| | - Pierre O. Fiset
- Department of Pathology, McGill University Health Center, Montreal, QC
| | - Patrice Desmeules
- Institut universitaire de cardiologie et de pneumologie de Québec—Université Laval
| | - Philippe Joubert
- Institut universitaire de cardiologie et de pneumologie de Québec—Université Laval
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