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Hirakawa T, Doi M, Hamai K, Katsura R, Miyake S, Fujita S, Ueno S, Masuda K, Tanimoto T, Nishisaka T, Hinoi T, Hirasawa A, Ishikawa N. Comprehensive genomic profiling of Japanese patients with thoracic malignancies: A single-center retrospective study. Respir Investig 2023; 61:746-754. [PMID: 37714093 DOI: 10.1016/j.resinv.2023.08.005] [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: 04/27/2023] [Revised: 07/25/2023] [Accepted: 08/03/2023] [Indexed: 09/17/2023]
Abstract
BACKGROUND Few studies have been conducted on comprehensive genomic profiling (CGP) panels in Japanese patients with thoracic malignancies after completing standard treatment. Consequently, its value in clinical practice remains unclear. METHODS We conducted a retrospective study of Japanese patients with thoracic malignancies who underwent CGP between June 2019 and November 2022 at our hospital. We evaluated the detection rate of actionable genetic alterations and percentage of patients who received genomically-matched therapy. Furthermore, we examined the value of the CGP panel in patients who underwent multiplex gene-panel testing prior to their initial treatment. This study was performed in accordance with the principles of the Declaration of Helsinki. RESULTS The study included 56 patients, of whom 47 (83.9%) had actionable genetic alterations and 8 (14.3%) received genomically-matched therapy. Of these, four patients were treated with approved drugs and three patients were treated with investigational agents. In addition, one patient was treated with approved drugs using the patient-directed care system. Of the 17 patients who had multiplex gene-panel testing performed at the start of their initial therapy, two (11.8%) were newly identified by the CGP panel and subsequently received genomically-matched therapy. EGFR L718Q and MET amplification were observed in two of the seven patients with epidermal growth factor receptor-tyrosine kinase inhibitor resistance. CONCLUSIONS The CGP panel could identify genetic alterations, thereby facilitating genomically-matched therapy, even in patients with thoracic malignancies who could not be identified using multiplex gene-panel testing.
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Affiliation(s)
- Tetsu Hirakawa
- Department of Respiratory Medicine, Hiroshima Prefectural Hospital, 1-5-54 Ujina-kanda, Minami-ku, Hiroshima, Hiroshima, 7348530, Japan
| | - Mihoko Doi
- Department of Genomic Medicine, Hiroshima Prefectural Hospital, 1-5-54 Ujina-kanda, Minami-ku, Hiroshima, Hiroshima, 7348530, Japan
| | - Kosuke Hamai
- Department of Respiratory Medicine, Onomichi General Hospital, 1-10-23 Hirahara, Onomichi, Hiroshima, 7220018, Japan
| | - Ryo Katsura
- Department of Respiratory Medicine, Hiroshima Prefectural Hospital, 1-5-54 Ujina-kanda, Minami-ku, Hiroshima, Hiroshima, 7348530, Japan
| | - Shinya Miyake
- Department of Respiratory Medicine, Hiroshima Prefectural Hospital, 1-5-54 Ujina-kanda, Minami-ku, Hiroshima, Hiroshima, 7348530, Japan
| | - Suguru Fujita
- Department of Respiratory Medicine, Hiroshima Prefectural Hospital, 1-5-54 Ujina-kanda, Minami-ku, Hiroshima, Hiroshima, 7348530, Japan
| | - Sayaka Ueno
- Department of Respiratory Medicine, Hiroshima Prefectural Hospital, 1-5-54 Ujina-kanda, Minami-ku, Hiroshima, Hiroshima, 7348530, Japan
| | - Ken Masuda
- Department of Respiratory Medicine, Hiroshima Prefectural Hospital, 1-5-54 Ujina-kanda, Minami-ku, Hiroshima, Hiroshima, 7348530, Japan
| | - Takuya Tanimoto
- Department of Respiratory Medicine, Hiroshima Prefectural Hospital, 1-5-54 Ujina-kanda, Minami-ku, Hiroshima, Hiroshima, 7348530, Japan
| | - Takashi Nishisaka
- Department of Pathology and Laboratory Medicine, Hiroshima Prefectural Hospital, 1-5-54 Ujina-kanda, Minami-ku, Hiroshima, Hiroshima, 7348530, Japan
| | - Takao Hinoi
- Department of Clinical and Molecular Genetics, Hiroshima University Hospital, 1-2-3 Kasumi, Minami-Ku, Hiroshima, Hiroshima, 7348551, Japan
| | - Akira Hirasawa
- Department of Clinical Genomic Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 2-5-1 Shikata-cho, Kita-ku, Okayama, Okayama, 7008558, Japan
| | - Nobuhisa Ishikawa
- Department of Respiratory Medicine, Hiroshima Prefectural Hospital, 1-5-54 Ujina-kanda, Minami-ku, Hiroshima, Hiroshima, 7348530, Japan.
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Kunimasa K, Sugimoto N, Kawamura T, Yamasaki T, Honma K, Nagata S, Kukita Y, Fujisawa F, Inoue T, Yamaguchi Y, Kitasaka M, Wakamatsu T, Yamai T, Yamamoto S, Hayashi T, Inoue T, Tamiya M, Imamura F, Nishimura K, Nishino K. Clinical application of comprehensive genomic profiling panel to thoracic malignancies: A single-center retrospective study. Thorac Cancer 2022; 13:2970-2977. [PMID: 36100256 PMCID: PMC9626350 DOI: 10.1111/1759-7714.14643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 08/23/2022] [Accepted: 08/24/2022] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND The usefulness of comprehensive genomic profiling (CGP) panels for thoracic malignancies after completion of the standard treatment is unclear. METHODS The results of CGP panels for malignant thoracic diseases performed at our hospital between December 2019 and June 2022 were collected. We examined whether CGP panel results led to new treatment, correlated with the effectiveness of immune checkpoint inhibitors (ICIs), or revealed secondary findings related to hereditary tumors. RESULTS A total of 60 patients were enrolled, of which 52 (86.6%) had lung cancer. In six (10%) patients, the panel results led to treatment with insurance-listed molecular-targeted agents; four patients had EGFR mutations not detected by the real-time polymerase chain reaction assay and two had MET ex.14 skipping mutations. In small-cell lung cancer, the tumor mutation burden was high in 4/6 (66.7%) patients and pembrolizumab was available. Another MET ex.14 skipping mutation was detected in two cases with EGFR-tyrosine kinase inhibitor resistance. ICI efficacy was ≤1 year in patients with STK-11, KEAP1, and NEF2L2 mutations. A BRCA2 mutation with a high probability of germline mutation was detected in one patient. A thymic carcinoma with no detectable oncogenic mutation responded to second-line treatment with Tegafur-Gimeracil-Oteracil Potassium (TS-1) for ≥9 years. CONCLUSIONS CGP panels are useful in thoracic malignancies, especially lung cancer, because they can detect overlooked driver mutations and genetic alterations. We believe that the significance of conducting a CGP panel prior to treatment may also exist, as it may lead to the prediction of ICI treatment efficacy.
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Affiliation(s)
- Kei Kunimasa
- Department of Thoracic OncologyOsaka International Cancer InstituteOsakaJapan,Department of Genetic OncologyOsaka International Cancer InstituteOsakaJapan
| | - Naotoshi Sugimoto
- Department of Genetic OncologyOsaka International Cancer InstituteOsakaJapan,Department of Medical OncologyOsaka International Cancer InstituteOsakaJapan
| | - Takahisa Kawamura
- Department of Thoracic OncologyOsaka International Cancer InstituteOsakaJapan,Department of Genetic OncologyOsaka International Cancer InstituteOsakaJapan
| | - Tomoyuki Yamasaki
- Department of Genetic OncologyOsaka International Cancer InstituteOsakaJapan,Department of Endocrinology/Metabolism Internal Medicine, Clinical ExaminationOsaka International Cancer InstituteOsakaJapan
| | - Keiichiro Honma
- Department of Diagnostic Pathology and CytologyOsaka International Cancer InstituteOsakaJapan
| | - Shigenori Nagata
- Department of Diagnostic Pathology and CytologyOsaka International Cancer InstituteOsakaJapan
| | - Yoji Kukita
- Department of Genetic OncologyOsaka International Cancer InstituteOsakaJapan,Laboratory of Genomic PathologyOsaka International Cancer InstituteOsakaJapan
| | - Fumie Fujisawa
- Department of Genetic OncologyOsaka International Cancer InstituteOsakaJapan,Department of Medical OncologyOsaka International Cancer InstituteOsakaJapan
| | - Tazuko Inoue
- Department of Genetic OncologyOsaka International Cancer InstituteOsakaJapan
| | - Yuko Yamaguchi
- Department of Genetic OncologyOsaka International Cancer InstituteOsakaJapan
| | - Mitsuko Kitasaka
- Department of Genetic OncologyOsaka International Cancer InstituteOsakaJapan
| | - Toru Wakamatsu
- Department of Genetic OncologyOsaka International Cancer InstituteOsakaJapan,Musculoskeletal Oncology ServiceOsaka International Cancer InstituteOsakaJapan
| | - Takuo Yamai
- Department of Genetic OncologyOsaka International Cancer InstituteOsakaJapan,Department of Hepatobiliary and Pancreatic OncologyOsaka International Cancer InstituteOsakaJapan
| | - Sachiko Yamamoto
- Department of Genetic OncologyOsaka International Cancer InstituteOsakaJapan,Department of Gastrointestinal OncologyOsaka International Cancer InstituteOsakaJapan
| | - Takuji Hayashi
- Department of Genetic OncologyOsaka International Cancer InstituteOsakaJapan,Department of UrologyOsaka International Cancer InstituteOsakaJapan
| | - Takako Inoue
- Department of Thoracic OncologyOsaka International Cancer InstituteOsakaJapan
| | - Motohiro Tamiya
- Department of Thoracic OncologyOsaka International Cancer InstituteOsakaJapan
| | - Fumio Imamura
- Department of Genetic OncologyOsaka International Cancer InstituteOsakaJapan
| | - Kazuo Nishimura
- Department of Genetic OncologyOsaka International Cancer InstituteOsakaJapan,Department of UrologyOsaka International Cancer InstituteOsakaJapan
| | - Kazumi Nishino
- Department of Thoracic OncologyOsaka International Cancer InstituteOsakaJapan
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Asami K, Ando M, Nishimura T, Yokoi T, Tamura A, Minato K, Mori M, Ogushi F, Yamamoto A, Yoshioka H, Kawahara M, Atagi S. A randomized phase II study of docetaxel or pemetrexed with or without the continuation of gefitinib after disease progression in elderly patients with non-small cell lung cancer harboring EGFR mutations (JMTO LC12-01). Thorac Cancer 2022; 13:1827-1836. [PMID: 35562327 PMCID: PMC9200881 DOI: 10.1111/1759-7714.14465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 04/24/2022] [Accepted: 04/25/2022] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Gefitinib (G) is a recommended molecular-targeted agent for elderly patients with epidermal growth factor receptor (EGFR)-mutant non-small cell lung cancer (NSCLC). Docetaxel (Doc) and pemetrexed (Pem) have similar efficacies, and either is often used as the sole agent during treatment. The efficacy of continuing G after progressive disease (PD) develops has been reported. It remains unclear whether the continuation of G in combination with a single cytotoxic agent beyond PD is beneficial for elderly patients. Here, we conducted a randomized phase II study to assess the efficacy and safety of cytotoxic chemotherapy with G for elderly patients with progressive EGFR-mutant NSCLC. METHODS Elderly patients with EGFR-mutant NSCLC with PD previously treated with G were enrolled. Patients received Pem 500 mg/m or Doc 60 mg/m every 21 days and were randomly assigned to receive chemotherapy with 250 mg G (G+ Doc/Pem arm) or without G (Doc/Pem arm) until further disease progression or unacceptable toxicity. RESULTS This trial was terminated early owing to slow accrual. A group of 22 patients underwent analysis. The primary endpoint, progression-free survival (PFS), was significantly longer in the G + Doc/Pem arm (median: 1.6 months vs. 5.6 months, hazard ratio = 0.40, 95% CI: 0.16-0.99, p = 0.0391). Adverse events ≥ grade 3 were more frequent in the G + Doc/Pem arm (45.5% vs. 90.9%, p = 0.032). CONCLUSIONS Patients on G and Pem or Doc beyond PD showed a longer PFS than those on single-agent chemotherapy; however, it was associated with increased toxicity.
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Affiliation(s)
| | - Masahiko Ando
- Department of Advanced Medicine, Nagoya University Hospital, Nagoya, Japan
| | - Takashi Nishimura
- Department of Respiratory Medicine, Kyoto Katsura Hospital, Kyoto, Japan
| | - Takashi Yokoi
- Department of Thoracic Oncology, Hyogo College of Medicine, Hyogo, Japan
| | - Atsuhisa Tamura
- Department of Center for Pulmonary Diseases, Tokyo National Hospital, Tokyo, Japan
| | - Koichi Minato
- Department of Respiratory Medicine, Gunma Prefectural Cancer Center, Gunma, Japan
| | - Masahide Mori
- Department of Thoracic Oncology, National Hospital Organization Osaka Toneyama Medical Center, Osaka, Japan
| | - Fumitaka Ogushi
- Department of Respiratory Medicine, Kochi National Hospital, Kochi, Japan
| | - Akiyoshi Yamamoto
- Department of Respiratory Medicine, Takamatsu Red Cross Hospital, Kagawa, Japan
| | - Hiroshige Yoshioka
- Department of Thoracic Oncology, Kansai Medical University Hospital, Osaka, Japan
| | - Masaaki Kawahara
- Department of Respiratory Medicine, KKR Otemae Hospital, Osaka, Japan
| | - Shinji Atagi
- Department of Thoracic Oncology, National Hospital Organization Kinki-Chuo Chest Medical Center, Osaka, Japan
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Association between the frequency of surgeries for video-assisted thoracic surgery and the incidence of consequent surgical site infections: a retrospective observational study based on national surveillance data. BMC Infect Dis 2021; 21:363. [PMID: 33865320 PMCID: PMC8052810 DOI: 10.1186/s12879-021-06050-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 04/05/2021] [Indexed: 11/10/2022] Open
Abstract
Background The association between the frequency of surgeries and the incidence of surgical site infections (SSIs) has been reported for various surgeries. However, no previous study has explored this association among video-assisted thoracic surgeries (VATS). Hence, we aimed to investigate the association between the frequency of surgeries and SSI in video-assisted thoracic surgeries. Methods We analyzed the data of 26,878 thoracic surgeries, including 21,154 VATS, which were collected during a national surveillance in Japan between 2014 and 2018. The frequency of surgeries per hospital department was categorized into low (< 50/year), moderate (50–100/ year), and high (> 100/year). Chi-squared test or Fisher’s exact test was used for discrete explanatory variables, whereas Wilcoxon’s rank-sum test or Kruskal-Wallis test was used for continuous explanatory variables. Univariate analysis of the department groups was conducted to explore confounding factors associated with both SSIs and the department groups. We used a multiple logistic regression model focusing on VATS and stratified by the National Nosocomial Infections Surveillance System (NNIS) risk index. Results The rates of SSIs in the hospital groups with low, moderate, and high frequency of surgeries were 1.39, 1.05, and 1.28%, respectively. In the NNIS risk index 1 stratum, the incidence of SSIs was significantly lower in the moderate-frequency of surgeries group than that in the other groups (odds ratio [OR]: vs. low-frequency of surgeries: 2.48 [95% confidence interval [CI]: 1.20–5.13], P = 0.0143; vs. high-frequency of surgeries: 2.43 [95% CI: 1.44–4.11], P = 0.0009). In the stratum of NNIS risk indices 2 and 3, the incidence of SSI was significantly higher in the low-frequency of surgeries group (OR: 4.83, 95% CI: 1.47–15.93; P = 0.0095). Conclusion The result suggests that for departments with low-frequency of surgeries, an increase in the frequency of surgeries to > 50 per department annually potentially leads to a decrease in the incidence of SSIs. This occurs through an increase in the experience of the departmental surgeons and contributes to the improvement of VATS outcomes in thoracic surgeries. Supplementary Information The online version contains supplementary material available at 10.1186/s12879-021-06050-6.
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Okui T. An age-period-cohort analysis of mortality rates for stomach, colorectal, liver, and lung cancer among prefectures in Japan, 1999-2018. Environ Health Prev Med 2020; 25:80. [PMID: 33278883 PMCID: PMC7719246 DOI: 10.1186/s12199-020-00922-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 11/29/2020] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Although change in the birth cohort effect on cancer mortality rates is known to be highly associated with the decreasing rates of age-standardized cancer mortality rates in Japan, the differences in the trends of cohort effect for representative cancer types among the prefectures remain unknown. This study aimed to investigate the differences in the decreasing rate of cohort effects among the prefectures for representative cancer types using age-period-cohort (APC) analysis. METHODS Data on stomach, colorectal, liver, and lung cancer mortality for each prefecture and the population data from 1999 to 2018 were obtained from the Vital Statistics in Japan. Mortality data for individuals aged 50 to 79 years grouped in 5-year increments were used, and corresponding birth cohorts born 1920-1924 through 1964-1978 were used for analysis. We estimated the effects of age, period, and cohort on each type of mortality rate for each prefecture by sex. Then, we calculated the decreasing rates of cohort effects for each prefecture. We also calculated the mortality rate ratio of each prefecture compared with all of Japan for cohorts using the estimates. RESULTS As a result of APC analysis, we found that the decreasing rates of period effects were small and that there was a little difference in the decreasing rates among prefectures for all types of cancer among both sexes. On the other hand, there was a large difference in the decreasing rates of cohort effects for stomach and liver cancer mortality rates among prefectures, particularly for men. For men, the decreasing rates of cohort effects in cohorts born between 1920-1924 and 1964-1978 varied among prefectures, ranging from 4.1 to 84.0% for stomach cancer and from 20.2 to 92.4% for liver cancers, respectively. On the other hand, the differences in the decreasing rates of cohort effects among prefectures for colorectal and lung cancer were relatively smaller. CONCLUSIONS The decreasing rates of cohort effects for stomach and liver cancer varied widely among prefectures. It is possible that this will influence cancer mortality rates in each prefecture in the future.
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Affiliation(s)
- Tasuku Okui
- Medical Information Center, Kyushu University Hospital, Maidashi 3-1-1 Higashi-ku, Fukuoka City, Fukuoka Prefecture, 812-8582, Japan.
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Predicting Deep Learning Based Multi-Omics Parallel Integration Survival Subtypes in Lung Cancer Using Reverse Phase Protein Array Data. Biomolecules 2020; 10:biom10101460. [PMID: 33086649 PMCID: PMC7603376 DOI: 10.3390/biom10101460] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 10/13/2020] [Accepted: 10/18/2020] [Indexed: 12/13/2022] Open
Abstract
Mortality attributed to lung cancer accounts for a large fraction of cancer deaths worldwide. With increasing mortality figures, the accurate prediction of prognosis has become essential. In recent years, multi-omics analysis has emerged as a useful survival prediction tool. However, the methodology relevant to multi-omics analysis has not yet been fully established and further improvements are required for clinical applications. In this study, we developed a novel method to accurately predict the survival of patients with lung cancer using multi-omics data. With unsupervised learning techniques, survival-associated subtypes in non-small cell lung cancer were first detected using the multi-omics datasets from six categories in The Cancer Genome Atlas (TCGA). The new subtypes, referred to as integration survival subtypes, clearly divided patients into longer and shorter-surviving groups (log-rank test: p = 0.003) and we confirmed that this is independent of histopathological classification (Chi-square test of independence: p = 0.94). Next, an attempt was made to detect the integration survival subtypes using only one categorical dataset. Our machine learning model that was only trained on the reverse phase protein array (RPPA) could accurately predict the integration survival subtypes (AUC = 0.99). The predicted subtypes could also distinguish between high and low risk patients (log-rank test: p = 0.012). Overall, this study explores novel potentials of multi-omics analysis to accurately predict the prognosis of patients with lung cancer.
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Chung-Hall J, Fong GT, Meng G, Yan M, Tabuchi T, Yoshimi I, Mochizuki Y, Craig LV, Ouimet J, Quah ACK. Effectiveness of Text-Only Cigarette Health Warnings in Japan: Findings from the 2018 International Tobacco Control (ITC) Japan Survey. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:E952. [PMID: 32033056 PMCID: PMC7036893 DOI: 10.3390/ijerph17030952] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 01/31/2020] [Accepted: 02/02/2020] [Indexed: 12/13/2022]
Abstract
Health warnings are an effective strategy for communicating the health harms of smoking, encouraging quitting, and preventing smoking initiation. This study examines the effectiveness of existing text-only health warnings, identifies key predictors of warning effectiveness, and assesses support for pictorial warnings in Japan. Data are from the 2018 International Tobacco Control (ITC) Japan Survey, a cohort survey of adult cigarette smokers (n = 3306), dual users of cigarettes and heated tobacco products (n = 555), and non-cigarette smokers (n = 823). Weighted multivariable logistic regression models were used to assess predictors of warning effectiveness and support for pictorial warnings. Overall, 15.6% of respondents noticed warnings, and 7.9% read or looked closely at warnings. Overall, 10.3% of smokers and dual users said the warnings stopped them from having a cigarette, and 7.2% avoided warnings. Overall, 27.5% of respondents said the warnings made them think about health risks of smoking, but only 2.7% of smokers and dual users said the warnings made them more likely to quit. Overall, 57.6% of respondents supported pictorial warnings. The weak effectiveness of Japan's text-only warnings is consistent with that in other countries with similar warnings. There is majority support for pictorial warnings in Japan, although the level of support is lower than in other countries.
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Affiliation(s)
- Janet Chung-Hall
- Department of Psychology, University of Waterloo, 200 University Ave W., Waterloo, ON N2L 3G1, Canada; (G.T.F.); (G.M.); (M.Y.); (L.V.C.); (J.O.); (A.C.K.Q.)
| | - Geoffrey T. Fong
- Department of Psychology, University of Waterloo, 200 University Ave W., Waterloo, ON N2L 3G1, Canada; (G.T.F.); (G.M.); (M.Y.); (L.V.C.); (J.O.); (A.C.K.Q.)
- Ontario Institute for Cancer Research, 661 University Ave, Suite 510, Toronto, ON M5G 0A3, Canada
- School of Public Health and Health Systems, University of Waterloo, 200 University Ave. W., Waterloo, ON N2L 3G1, Canada
| | - Gang Meng
- Department of Psychology, University of Waterloo, 200 University Ave W., Waterloo, ON N2L 3G1, Canada; (G.T.F.); (G.M.); (M.Y.); (L.V.C.); (J.O.); (A.C.K.Q.)
| | - Mi Yan
- Department of Psychology, University of Waterloo, 200 University Ave W., Waterloo, ON N2L 3G1, Canada; (G.T.F.); (G.M.); (M.Y.); (L.V.C.); (J.O.); (A.C.K.Q.)
| | - Takahiro Tabuchi
- Cancer Control Center, Osaka International Cancer Institute, Chome-1-69 Otemae, Chuo Ward, Osaka 541-8567, Japan;
| | - Itsuro Yoshimi
- Division of Tobacco Policy Research, National Cancer Center Japan, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan;
| | - Yumiko Mochizuki
- Japan Cancer Society, 13th Floor, Yurakucho Center Bldg. 2-5-1, Yurakucho, Chiyoda-ku, Tokyo 100-0006, Japan;
| | - Lorraine V. Craig
- Department of Psychology, University of Waterloo, 200 University Ave W., Waterloo, ON N2L 3G1, Canada; (G.T.F.); (G.M.); (M.Y.); (L.V.C.); (J.O.); (A.C.K.Q.)
| | - Janine Ouimet
- Department of Psychology, University of Waterloo, 200 University Ave W., Waterloo, ON N2L 3G1, Canada; (G.T.F.); (G.M.); (M.Y.); (L.V.C.); (J.O.); (A.C.K.Q.)
| | - Anne C. K. Quah
- Department of Psychology, University of Waterloo, 200 University Ave W., Waterloo, ON N2L 3G1, Canada; (G.T.F.); (G.M.); (M.Y.); (L.V.C.); (J.O.); (A.C.K.Q.)
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Shinchi Y, Komohara Y, Yonemitsu K, Sato K, Ohnishi K, Saito Y, Fujiwara Y, Mori T, Shiraishi K, Ikeda K, Suzuki M. Accurate expression of PD-L1/L2 in lung adenocarcinoma cells: A retrospective study by double immunohistochemistry. Cancer Sci 2019; 110:2711-2721. [PMID: 31294893 PMCID: PMC6726681 DOI: 10.1111/cas.14128] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Revised: 07/07/2019] [Accepted: 07/09/2019] [Indexed: 12/17/2022] Open
Abstract
The percentage of programmed death ligand 1 (PD‐L1) positivity in cancer cells, named as the tumor proportion score, is considered to be a predictive biomarker for anti‐PD‐1/PD‐L1 therapy in lung cancer. PD‐L1 is expressed on not only cancer cells but also on immune cells, including macrophages. Although previous studies related to PD‐L1/2 expression in cancer tissues have been generally based on single immunohistochemistry (IHC), in the present study, we attempted to evaluate accurate PD‐L1/2 expression in cancer cells in lung adenocarcinoma cells using double IHC to also evaluate macrophages. Of the 231 patients, PD‐L1 expression was negative in 169 patients (73.2%), 1%‐49% positive in 47 patients (20.3%), and ≥50% positive in 15 patients (6.5%). Interestingly, PD‐L1 positivity was decreased when using double IHC compared with the estimation by single IHC. High PD‐L1 expression was associated with high‐grade cancer cells and in higher stage cancer. PD‐L2 was negative in 109 patients (47.2%), 1%‐49% positive in 50 patients (21.6%), and ≥50% positive in 72 patients (31.2%). The number of PD‐L2‐positive patients was increased in cases that had an epidermal growth factor receptor (EGFR) mutation and in lower stage cancer. Thirty‐five patients (15.2%) were positive for both PD‐L1 and PD‐L2, whereas 81 patients (35.1%) were negative for both PD‐L1 and PD‐L2. Log‐rank analysis showed that progression‐free survival and overall survival were significantly the longest in the PD‐L1‐negative and PD‐L2‐positive groups (P < .0001 and P = .0120). We observed lower PD‐L1 or PD‐L2 expression in lung adenocarcinoma than previously reported. Double IHC for macrophages may help clinicians to evaluate PD‐L1 or PD‐L2 expression specifically in cancer cells.
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Affiliation(s)
- Yusuke Shinchi
- Department of Cell Pathology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan.,Department of Thoracic Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Yoshihiro Komohara
- Department of Cell Pathology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan.,Center for Metabolic Regulation of Healthy Aging, Kumamoto University, Kumamoto, Japan
| | - Kimihiro Yonemitsu
- Department of Cell Pathology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Kensaku Sato
- Department of Cell Pathology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Koji Ohnishi
- Department of Cell Pathology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Yoichi Saito
- Department of Cell Pathology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Yukio Fujiwara
- Department of Cell Pathology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Takeshi Mori
- Department of Thoracic Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Kenji Shiraishi
- Department of Thoracic Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Koei Ikeda
- Department of Thoracic Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Makoto Suzuki
- Department of Thoracic Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
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