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Kim EY, Song KY, Kim DJ. Post-gastrectomy anemia and ferritin dynamics: key determinants of prognosis and clinical management in patients with gastric cancer. Front Oncol 2025; 15:1487477. [PMID: 40161375 PMCID: PMC11949920 DOI: 10.3389/fonc.2025.1487477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2024] [Accepted: 02/24/2025] [Indexed: 04/02/2025] Open
Abstract
Objective This study identified the trends and clinical significance of anemia and ferritin status 1 year postoperatively in patients with long-term survival and analyzed clinicopathological factors and preoperative nutritional/inflammatory conditions associated with anemia of chronic disease (ACD) development. Methods Between March 2009 and December 2018, 2,976 patients who underwent curative gastrectomy for gastric cancer without recurrence or mortality within postoperative 1 year were included. The patients were categorized into four groups; non-iron deficiency without anemia, iron deficiency without anemia, iron deficiency anemia (IDA), and ACD based on postoperative 1 year ferritin and hemoglobin. Results The overall incidence of anemia was 36.5% (n=1,086). The prevalence of IDA and ACD was 12.7% (n=377) and 23.8 (n=709), respectively, at postoperative 1 year. Patients with ACD were significantly older, had higher ECOG, increased early complications, and were at a more advanced stage than the other groups. The overall survival (OS) of ACD was significantly lower than that of the other groups (p < 0.001), especially for stages I and III. The presence of ACD was a significant risk factor for overall (hazard ratio [HR] = 1.832, p < 0.001), disease-free (HR= 1.714, p = 0.003), and cancer-specific (HR= 1.690, P = 0.015) survival. Older age, advanced disease stage, low preoperative prognostic nutritional index, preoperative anemia, and early postoperative complications were significant risk factors for ACD. Conclusions Relationship between ferritin and Hb at postoperative 1 year is a significant prognostic factor for survival in patients with gastric cancer. Particularly, ACD may be a specific predictor of gastric cancer. Therefore, clinicians need to pay attention to ACD status and prevent the risk factors for its development during long-term postoperative follow-up.
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Affiliation(s)
- Eun Young Kim
- Department of Surgery, Uijeongbu St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Kyo Young Song
- Department of Surgery, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Dong Jin Kim
- Department of Surgery, Eunpyeong St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
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Anic K, Schmidt MW, Schmidt M, Krajnak S, Löwe A, Linz VC, Schwab R, Weikel W, Brenner W, Westphalen C, Rissel R, Hartmann EK, Conradi R, Hasenburg A, Battista MJ. Impact of perioperative red blood cell transfusion, anemia of cancer and global health status on the prognosis of elderly patients with endometrial and ovarian cancer. Front Oncol 2022; 12:967421. [PMID: 36185177 PMCID: PMC9524224 DOI: 10.3389/fonc.2022.967421] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Accepted: 08/09/2022] [Indexed: 11/13/2022] Open
Abstract
Introduction Perioperative red blood cell (RBC) transfusions have been associated with increased morbidity and worse oncological outcome in some solid neoplasms. In order to elucidate whether RBC transfusions themselves, the preoperative anemia of cancer (AOC), or the impaired global health status might explain this impact on patients with endometrial cancer (EC) or ovarian cancer (OC), we performed a retrospective, single-institution cohort study. Materials and methods Women older than 60 years with EC or OC were included. The influence of RBC transfusions, AOC, and frailty status determined by the G8 geriatric screening tool (G8 score), as well as the clinical-pathological cancer characteristics on progression-free survival (PFS) and overall survival (OS), was determined by using the Kaplan-Meier method and the Cox regression analyses. Results In total, 263 patients with EC (n = 152) and OC (n = 111) were included in the study. Patients with EC receiving RBC transfusions were faced with a significantly shorter 5-year PFS (79.8% vs. 26.0%; p < 0.001) and 5-year OS (82.6% vs. 25.7%; p < 0.001). In multivariable analyses, besides established clinical-pathological cancer characteristics, the RBC transfusions remained the only significant prognostic parameter for PFS (HR: 1.76; 95%-CI [1.01–3.07]) and OS (HR: 2.38; 95%-CI [1.50–3.78]). In OC, the G8 score stratified the cohort in terms of PFS rates (G8-non-frail 53.4% vs. G8-frail 16.7%; p = 0.010) and AOC stratified the cohort for 5-year OS estimates (non-anemic: 36.7% vs. anemic: 10.6%; p = 0.008). Multivariable Cox regression analyses determined the G8 score and FIGO stage as independent prognostic factors in terms of PFS (HR: 2.23; 95%-CI [1.16–4.32] and HR: 6.52; 95%-CI [1.51–28.07], respectively). For OS, only the TNM tumor stage retained independent significance (HR: 3.75; 95%-CI [1.87–7.53]). Discussion The results of this trial demonstrate the negative impact of RBC transfusions on the prognosis of patients with EC. Contrastingly, the prognosis of OC is altered by the preoperative global health status rather than AOC or RBC transfusions. In summary, we suggested a cumulatively restrictive transfusion management in G8-non-frail EC patients and postulated a more moderate transfusion management based on the treatment of symptomatic anemia without survival deficits in OC patients.
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Affiliation(s)
- Katharina Anic
- Department of Gynecology and Obstetrics, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
- *Correspondence: Katharina Anic,
| | - Mona Wanda Schmidt
- Department of Gynecology and Obstetrics, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Marcus Schmidt
- Department of Gynecology and Obstetrics, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Slavomir Krajnak
- Department of Gynecology and Obstetrics, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Amelie Löwe
- Department of Gynecology and Obstetrics, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Valerie Catherine Linz
- Department of Gynecology and Obstetrics, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Roxana Schwab
- Department of Gynecology and Obstetrics, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Wolfgang Weikel
- Department of Gynecology and Obstetrics, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Walburgis Brenner
- Department of Gynecology and Obstetrics, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Christiane Westphalen
- Department of Geriatric Medicine, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - René Rissel
- Department of Anesthesiology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Erik Kristoffer Hartmann
- Department of Anesthesiology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Roland Conradi
- Blood Transfusion Center, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - Annette Hasenburg
- Department of Gynecology and Obstetrics, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Marco Johannes Battista
- Department of Gynecology and Obstetrics, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
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Greenberg JA, Zwiep TM, Sadek J, Malcolm JC, Mullen KA, McIsaac DI, Musselman RP, Moloo H. Clinical practice guideline: evidence, recommendations and algorithm for the preoperative optimization of anemia, hyperglycemia and smoking. Can J Surg 2021; 64:E491-E509. [PMID: 34598927 PMCID: PMC8526150 DOI: 10.1503/cjs.011519] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/18/2020] [Indexed: 12/13/2022] Open
Abstract
Preoperative optimization has not been explored comprehensively in the surgical literature, as this responsibility has often been divided among surgery, anesthesia and medicine. We developed an evidence-based clinical practice guideline to summarize existing evidence and present diagnostic and treatment algorithms for use by surgeons caring for patients scheduled to undergo major elective surgery. We focus on 3 common comorbid conditions seen across surgical specialties - anemia, hyperglycemia and smoking - as these conditions increase complication rates in patients undergoing major surgery and can be optimized successfully as soon as 6-8 weeks before surgery. With the ability to address these conditions earlier in the patient journey, surgeons can positively affect patient outcomes. The aim of this guideline is to bring optimization in the preoperative period under the existing umbrella of evidence-based surgical care.
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Affiliation(s)
- Joshua A Greenberg
- From the Department of Surgery, The Ottawa Hospital, Ottawa, Ont. (Greenberg, Zwiep, Sadek, Musselman, Moloo); the Department of Medicine, The Ottawa Hospital, Ottawa, Ont. (Saidenberg, Malcolm); the Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ont. (Saidenberg, McIsaac, Moloo); the University of Ottawa Heart Institute, Ottawa, Ont. (Mullen); and the Department of Anesthesiology and Pain Medicine, The Ottawa Hospital, Ottawa, Ont. (McIsaac)
| | - Terry M Zwiep
- From the Department of Surgery, The Ottawa Hospital, Ottawa, Ont. (Greenberg, Zwiep, Sadek, Musselman, Moloo); the Department of Medicine, The Ottawa Hospital, Ottawa, Ont. (Saidenberg, Malcolm); the Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ont. (Saidenberg, McIsaac, Moloo); the University of Ottawa Heart Institute, Ottawa, Ont. (Mullen); and the Department of Anesthesiology and Pain Medicine, The Ottawa Hospital, Ottawa, Ont. (McIsaac)
| | - Joseph Sadek
- From the Department of Surgery, The Ottawa Hospital, Ottawa, Ont. (Greenberg, Zwiep, Sadek, Musselman, Moloo); the Department of Medicine, The Ottawa Hospital, Ottawa, Ont. (Saidenberg, Malcolm); the Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ont. (Saidenberg, McIsaac, Moloo); the University of Ottawa Heart Institute, Ottawa, Ont. (Mullen); and the Department of Anesthesiology and Pain Medicine, The Ottawa Hospital, Ottawa, Ont. (McIsaac)
| | - Janine C Malcolm
- From the Department of Surgery, The Ottawa Hospital, Ottawa, Ont. (Greenberg, Zwiep, Sadek, Musselman, Moloo); the Department of Medicine, The Ottawa Hospital, Ottawa, Ont. (Saidenberg, Malcolm); the Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ont. (Saidenberg, McIsaac, Moloo); the University of Ottawa Heart Institute, Ottawa, Ont. (Mullen); and the Department of Anesthesiology and Pain Medicine, The Ottawa Hospital, Ottawa, Ont. (McIsaac)
| | - Kerri A Mullen
- From the Department of Surgery, The Ottawa Hospital, Ottawa, Ont. (Greenberg, Zwiep, Sadek, Musselman, Moloo); the Department of Medicine, The Ottawa Hospital, Ottawa, Ont. (Saidenberg, Malcolm); the Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ont. (Saidenberg, McIsaac, Moloo); the University of Ottawa Heart Institute, Ottawa, Ont. (Mullen); and the Department of Anesthesiology and Pain Medicine, The Ottawa Hospital, Ottawa, Ont. (McIsaac)
| | - Daniel I McIsaac
- From the Department of Surgery, The Ottawa Hospital, Ottawa, Ont. (Greenberg, Zwiep, Sadek, Musselman, Moloo); the Department of Medicine, The Ottawa Hospital, Ottawa, Ont. (Saidenberg, Malcolm); the Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ont. (Saidenberg, McIsaac, Moloo); the University of Ottawa Heart Institute, Ottawa, Ont. (Mullen); and the Department of Anesthesiology and Pain Medicine, The Ottawa Hospital, Ottawa, Ont. (McIsaac)
| | - Reilly P Musselman
- From the Department of Surgery, The Ottawa Hospital, Ottawa, Ont. (Greenberg, Zwiep, Sadek, Musselman, Moloo); the Department of Medicine, The Ottawa Hospital, Ottawa, Ont. (Saidenberg, Malcolm); the Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ont. (Saidenberg, McIsaac, Moloo); the University of Ottawa Heart Institute, Ottawa, Ont. (Mullen); and the Department of Anesthesiology and Pain Medicine, The Ottawa Hospital, Ottawa, Ont. (McIsaac)
| | - Husein Moloo
- From the Department of Surgery, The Ottawa Hospital, Ottawa, Ont. (Greenberg, Zwiep, Sadek, Musselman, Moloo); the Department of Medicine, The Ottawa Hospital, Ottawa, Ont. (Saidenberg, Malcolm); the Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ont. (Saidenberg, McIsaac, Moloo); the University of Ottawa Heart Institute, Ottawa, Ont. (Mullen); and the Department of Anesthesiology and Pain Medicine, The Ottawa Hospital, Ottawa, Ont. (McIsaac)
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Perioperative Transfusions for Gastroesophageal Cancers: Risk Factors and Short- and Long-Term Outcomes. J Gastrointest Surg 2021; 25:48-57. [PMID: 33159242 DOI: 10.1007/s11605-020-04845-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Accepted: 10/26/2020] [Indexed: 01/31/2023]
Abstract
BACKGROUND Perioperative blood transfusions have been associated with increased morbidity and poorer oncologic outcomes for numerous surgical procedures. However, this issue is understudied among patients with gastroesophageal malignancies. The objective was to clarify the risk factors and impact of perioperative transfusions on quality of life and surgical and oncologic outcomes among patients undergoing gastric and esophageal cancer surgery. METHODS Patients undergoing curative-intent resections for gastroesophageal cancers between 2010 and 2018 were included. Perioperative blood transfusion was defined as any transfusion within 24 h pre-operatively, during surgery, or the primary post-operative hospitalization period. Patient and tumor characteristics, surgical and oncological outcomes, and quality of life were compared. RESULTS A total of 435 patients were included. Perioperative transfusions occurred in 184 (42%). Anemia, blood loss, female sex, open surgical approach, and operative time emerged as independent risk factors for transfusions. Factors found to be independently associated with overall survival were neoadjuvant therapy, tumor size and stage, major complications, and mortality. Transfusions did not independently impact overall survival, disease-free survival, or quality of life. CONCLUSIONS Perioperative transfusions did not impact oncologic outcomes or quality of life among patients undergoing curative-intent surgery for gastroesophageal cancers.
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Novello M, Mandarino FV, Di Saverio S, Gori D, Lugaresi M, Duchi A, Argento F, Cavallari G, Wheeler J, Nardo B. Post-operative outcomes and predictors of mortality after colorectal cancer surgery in the very elderly patients. Heliyon 2019; 5:e02363. [PMID: 31485540 PMCID: PMC6716468 DOI: 10.1016/j.heliyon.2019.e02363] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 01/18/2019] [Accepted: 08/21/2019] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND The frailty of the very elderly patients who undergo surgery for colorectal cancer negatively influences postoperative mortality. This study aimed to identify risk factors for postoperative mortality in octogenarian and nonagenarian patients who underwent surgical treatment for colorectal cancer. METHODS This is a single institution retrospective study. The primary outcomes were risk factors for postoperative mortality. The variables of the octogenarians and nonagenarians were compared by using t-test, chi-square test, and Fisher exact test. A multivariate logistic regression analysis was carried out on the combined cohorts. RESULTS we identified 319 octogenarians and 43 nonagenarians (N = 362) who underwent surgery for colorectal cancer at the Sant'Orsola-Malpighi university hospital in Bologna between 2011 and 2015. The 30-day post-operative mortality was 6% (N = 18) among octogenarians and 21% (N = 9) for the nonagenarians.The groups significantly differed in the type of surgery (elective vs. urgent surgery, p < 0.0001), ASA score (p = 0.0003) and rates of 30-day postoperative mortality (6% vs. 21%, p = 0.0003).In the multivariate analysis ASA > III (OR 2.37, 95% CI [1.43-3.93], p < 0,001), and urgent surgery (OR 2.17, 95% CI [1.17-4.04], p = 0.014) were associated to post-operative mortality. On the contrary, pre-operative albumin≥3.4 g/dL (OR 0.14, 95% CI [0.05-0.52], p = 0.001) was associated with a protective effect on postoperative mortality. CONCLUSIONS In the very elderly affected by colorectal cancer, preoperative nutritional status and pre-existing comorbidities, rather than age itself, should be considered as selection criteria for surgery. Preoperative improvement of nutritional status and ASA risk assessment may be beneficial for stratification of patients and ultimately for optimizing outcomes.
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Affiliation(s)
- Matteo Novello
- Department of Experimental, Diagnostic and Specialty Medicine (DIMES), S.Orsola- Malpighi Hospital, University of Bologna, Bologna, Italy
| | - Francesco Vito Mandarino
- Department of Experimental, Diagnostic and Specialty Medicine (DIMES), S.Orsola- Malpighi Hospital, University of Bologna, Bologna, Italy
| | - Salomone Di Saverio
- Department of Surgery, Carlo Alberto Pizzardi Maggiore Hospital, Largo Nigrisoli 2, Bologna, Italy
- Colorectal Unit, Addenbrookes Hospital University of Cambridge, Cambridge, United Kingdom
| | - Davide Gori
- Department of Biomedical and Neuromotor Sciences (DIBINEM), University of Bologna, Bologna, Italy
| | - Marialuisa Lugaresi
- Department of Experimental, Diagnostic and Specialty Medicine (DIMES), S.Orsola- Malpighi Hospital, University of Bologna, Bologna, Italy
| | - Alessandro Duchi
- Department of Experimental, Diagnostic and Specialty Medicine (DIMES), S.Orsola- Malpighi Hospital, University of Bologna, Bologna, Italy
| | - Francesca Argento
- Department of Experimental, Diagnostic and Specialty Medicine (DIMES), S.Orsola- Malpighi Hospital, University of Bologna, Bologna, Italy
| | - Giuseppe Cavallari
- Department of Experimental, Diagnostic and Specialty Medicine (DIMES), S.Orsola- Malpighi Hospital, University of Bologna, Bologna, Italy
| | - James Wheeler
- Department of Biomedical and Neuromotor Sciences (DIBINEM), University of Bologna, Bologna, Italy
| | - Bruno Nardo
- Department of Experimental, Diagnostic and Specialty Medicine (DIMES), S.Orsola- Malpighi Hospital, University of Bologna, Bologna, Italy
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Preoperative Anemia or Low Hemoglobin Predicts Poor Prognosis in Gastric Cancer Patients: A Meta-Analysis. DISEASE MARKERS 2019; 2019:7606128. [PMID: 30719182 PMCID: PMC6334363 DOI: 10.1155/2019/7606128] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/08/2018] [Revised: 10/17/2018] [Accepted: 11/25/2018] [Indexed: 02/06/2023]
Abstract
Background The prognostic value of preoperative anemia in gastric cancer remains unclear. Therefore, the purpose of the present study is to evaluate the prognostic value of preoperative anemia in gastric cancer. Methods We searched Embase and PubMed databases for relevant studies from inception to March 2018. The prognostic value of preoperative anemia in gastric cancer was determined by calculating the hazard ratio (HR) and the corresponding 95% confidence interval (CI) as effect measures. A random effect model was used in cases in which there was significant heterogeneity; otherwise, a fixed effect model was used. Statistical analyses were performed using Stata software. Results Seventeen studies involving 13,154 gastric cancer patients were included. The estimated rate of preoperative anemia was 36% (95%CI = 27-44%). The overall survival of preoperative anemia was poor (HR = 1.33, 95%CI = 1.21-1.45). Moreover, disease-free survival was significantly lower in patients with preoperative anemia compared with those without this condition (HR = 1.62, 95%CI = 1.13-2.32). These findings were corroborated by the results of subgroup analyses. Conclusions The results indicate that preoperative anemia predicts poor prognosis in gastric cancer, including overall survival and disease-free survival. Therefore, preoperative anemia may be a convenient and cost-effective blood-derived prognostic marker for gastric cancer.
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Zhou SK, Yang LL, Chen R, Lu Y, Zheng YH. HLA-DQB1*03 genotype and perioperative blood transfusion are not conducive to the prognosis of patients with gastric cancer. J Clin Lab Anal 2018; 32:e22443. [PMID: 29667729 DOI: 10.1002/jcla.22443] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2017] [Accepted: 03/05/2018] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Gastric cancer (GC) is a disease associated with a higher incidence and mortality, and some host genetic polymorphisms have been reported as potential factors contributing to the development of GC. In view of this, the study was conducted to investigate the effects of HLA-DQB1 gene polymorphisms and perioperative blood transfusion on prognosis of patients with gastric cancer (GC). METHODS A total of 142 patients with GC (case group) and 150 healthy controls (control group) were enrolled. Relationship between HLA-DQB1 gene polymorphisms, perioperative blood transfusion, and clinical pathological parameters of patients with GC after operation was analyzed. Kaplan-Meier curve was applied for analyzing survival rate of patients with GC, and Cox multivariate regression analysis for prognostic factors of patients with GC. RESULTS The frequency of HLA-DQB1*03 gene was increased in patients with GC. Patients with GC with HLA-DQB1*03 genotype had higher number of tumor size >6 cm, deeper depth of infiltration, higher LNM rate, and later stage of disease. Patients with HLA-DQB1*03 genotype had lower survival rate compared with other genotypes. Anemia before operation, depth of infiltration in T3 stage and T4 stage, LNM in N1 stage and N2 stage, and HLA-DQB1*03 genotype were regarded as independent risk factors for patients with GC. CONCLUSION These results demonstrate that HLA-DQB1*03 genotype and perioperative blood transfusion are not conducive to the prognosis of patients with GC, which could provide a reference for the treatment of GC.
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Affiliation(s)
- Shen-Kang Zhou
- Department of Gastrointestinal Surgery, Taizhou Hospital of Zhejiang Province, Taizhou, China
| | - Lei-Lei Yang
- Department of Gastrointestinal Surgery, Taizhou Hospital of Zhejiang Province, Taizhou, China
| | - Rui Chen
- Department of Gastrointestinal Surgery, Taizhou Hospital of Zhejiang Province, Taizhou, China
| | - Yong Lu
- Department of Gastrointestinal Surgery, Taizhou Hospital of Zhejiang Province, Taizhou, China
| | - Yong-Hua Zheng
- Department of General Surgery, Taizhou Hospital of Zhejiang Province, Taizhou, China
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