1
|
Liu F, Wu X, Wang W, Chang J. A novel immunohistochemical score predicts the postoperative prognosis of gastric cancer patients. World J Surg Oncol 2023; 21:220. [PMID: 37491274 PMCID: PMC10369746 DOI: 10.1186/s12957-023-03113-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Accepted: 07/12/2023] [Indexed: 07/27/2023] Open
Abstract
BACKGROUND AND AIM Immunohistochemistry indicators are increasingly being used to predict the survival prognosis of cancer patients after surgery. This study aimed to combine some markers to establish an immunohistochemical score (MSI-P53-Ki-67[MPK]) and stratify postoperative patients with gastric cancer according to the score. METHODS We used 245 patients who underwent surgery at one center as the training cohort and 111 patients from another center as the validation cohort. All patients were treated between January 2012 and June 2018. The training cohort was screened for prognostic factors, and MPK scores were established using univariate and multifactorial COX risk proportional models. Patients were prognostically stratified according to the MPK score after gastrectomy for gastric cancer. Overall survival (OS) and recurrence-free survival (RFS) rates were compared among low-, intermediate-, and high-risk groups using the Kaplan-Meier method, and survival curves were plotted. Finally, the MPK score was validated using the validation cohort. RESULTS In the training group, there were statistically significant differences in OS and RFS in the low, medium, and high-risk groups (P < 0.001). Thirty patients were in the high-risk group (12.2%). The median survival times of the three groups were 64.0, 44.0, and 23.0, respectively, and median times to recurrence were 54.0, 35.0, and 16.0 months, respectively. In the validation group, the prognosis in the three risk groups remained significantly different (P < 0.001). CONCLUSIONS The novel MPK score could effectively predict the postoperative OS and RFS of gastric cancer patients, risk-stratify postoperative patients, and identify postoperative high-risk patients for refined management.
Collapse
Affiliation(s)
- Feng Liu
- Department of Gastrointestinal Surgery, Affiliated Kunshan Hospital of Jiangsu University, Suzhou, Jiangsu, 215300, People's Republic of China
| | - Xiaoyang Wu
- Department of Gastrointestinal Surgery, Affiliated Kunshan Hospital of Jiangsu University, Suzhou, Jiangsu, 215300, People's Republic of China
| | - Weiping Wang
- Department of General Surgery, Kunshan Second People's Hospital, Suzhou, 215300, People's Republic of China
| | - Jun Chang
- Department of General Surgery, Kunshan Second People's Hospital, Suzhou, 215300, People's Republic of China.
| |
Collapse
|
2
|
Kahraman S, Yalcin S. Recent Advances in Systemic Treatments for HER-2 Positive Advanced Gastric Cancer. Onco Targets Ther 2021; 14:4149-4162. [PMID: 34285507 PMCID: PMC8286155 DOI: 10.2147/ott.s315252] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Accepted: 06/09/2021] [Indexed: 12/13/2022] Open
Abstract
Gastric cancer (GC) is the fifth most common cancer worldwide. Despite recent improvements in treatment quality and options, advanced gastric cancer remains one of the hardest to cure cancers, with a median overall survival (OS) of 10–12 months and a 5-year OS of approximately 5–20%. There is an unmet need for further efforts to palliate disease-related symptoms, improve quality of life, increase tumor response rate, and prolong progression free and overall survival while balancing the toxicities of therapy. The most common type of GC is adenocarcinoma, which demonstrates morphological, biological, and clinical heterogeneity. A plethora of genomic alterations and the activation of numerous molecular pathways including human epidermal growth receptor 2 (HER2), epidermal growth factor receptor (EGFR), fibroblast growth factor receptor-2 (FGFR2), mesenchymal epidermal transforming factor receptor (MET), and the phosphatidylinositol 3-kinase (PI3K)/mammalian target of rapamycin (mTOR) are responsible for the complex heterogeneity of GC. Efforts to validate the therapeutic effects of inhibiting some of these aberrantly expressed pathways have failed to lead to a clinically meaningful outcome apart from the overexpression/amplification of the HER2 gene, inhibition of which has had a significant impact on clinical practice. The only available biomarkers to guide the effective treatment of patients with advanced GC are HER2 overexpression, MSI/PD-L1 status, and FGFR alterations. Various anti-HER2 agents have been evaluated after the success of the ToGA trial, but none led to a significant enough clinical improvement to be considered a viable alternative for HER2-targeted therapy in advanced GC until the global Keynote-811 trial, which added pembrolizumab to trastuzumab in combination with chemotherapy. This combination demonstrated a survival advantage for the first time in the 11 years since ToGA. Trastuzumab deruxtecan (T-DXd) was also found to be effective in patients who had already received >2 previous lines of treatment. Despite these promising avenues, the optimal management of HER-2 positive GC still requires further development.
Collapse
Affiliation(s)
- Seda Kahraman
- Yıldırım Beyazıt University Faculty of Medicine, Department of Medical Oncology, Ankara, Turkey
| | - Suayib Yalcin
- Hacettepe University Institute of Cancer, Department of Medical Oncology, Ankara, Turkey
| |
Collapse
|
3
|
Li Y, Li J, Li J. Two updates on oesophagogastric junction adenocarcinoma from the fifth WHO classification: Alteration of definition and emphasis on HER2 test. Histol Histopathol 2020; 36:339-346. [PMID: 33377175 DOI: 10.14670/hh-18-296] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
INTRODUCTION The incidence of oesophagogastric junction adenocarcinoma has increased rapidly but remains controversial over the last decades. There are two crucial updates of the fifth World Health Organization (WHO) classification, including the alteration of its definition and the emphasis on the human epidermal growth factor receptor 2 (HER2) test. METHODS A total of 566 clinicopathological samples from patients who were diagnosed with gastric adenocarcinoma were retrospectively analyzed. We comprehensively compared the clinicopathological features of oesophagogastric junction adenocarcinoma between the fourth (V4.0) and fifth (V5.0) WHO versions. The clinicalpathological features among oesophagogastric junction, proximal and distal gastric tumors with fourth and fifth edition were also compared, respectively. Also, we discuss the correlation of HER2-expression with clinicopathological features according to the V5.0. RESULTS The results showed that the difference was mainly between oesophagogastric junction and distal adenocarcinoma in V4.0, while some were found between proximal and distal adenocarcinoma in V5.0. Tumors invading the oesophagus more than 3cm were still mainly oesophagogastric junction tumors. The expression of HER2 in oesophagogastric junction and proximal gastric adenocarcinoma was still higher than that in gastric body and distal sites. CONCLUSIONS The clinicopathological parameters of the oesophagogastric junction tumors changed to some extent in the updated WHO version. The proximal gastric tumors tended to be more invasive, more than those located in oesophagogastric junction. But the latter with oesophageal invasion required additional management. The HER2-expression of oesophagogastric junction adenocarcinoma is the highest. The classification of V5.0 is reasonable and worth recommendation.
Collapse
Affiliation(s)
- Yunzhu Li
- Department of Pathology, Sichuan Cancer Hospital and Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Jiayu Li
- Department of Pathology, Sichuan Cancer Hospital and Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Jiman Li
- Department of Pathology, Sichuan Cancer Hospital and Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China.
| |
Collapse
|
4
|
Kasochi C, Julius P, Mweemba I, Kayamba V. Human epidermal growth factor receptor 2 overexpression in gastric and gastroesophageal junction adenocarcinoma in patients seen at the University Teaching Hospital, Lusaka, Zambia. Afr Health Sci 2020; 20:1857-1864. [PMID: 34394249 PMCID: PMC8351871 DOI: 10.4314/ahs.v20i4.41] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND There are scanty data on the occurrence of gastric tumours overexpressing human epidermal growth factor receptor 2 (HER2) in Africa. OBJECTIVE To assess HER2 protein overexpression in gastric and gastroesophageal junction adenocarcinoma (GGEAC) samples from a single centre in Zambia. METHODOLOGY This was a cross-sectional study of formalin-fixed paraffin-embedded blocks with GGEAC. Prepared slides were first stained with Haematoxylin and Eosin and then evaluated for HER2 protein overexpression by immunohistochemistry. RESULTS A total of 57 gastric tissues were stained and evaluated for HER2 overexpression. Thirteen (23%) showed overexpression, 41/57 (72%) had negative and 3/57 (5%) had equivocal staining. The equivocal cases were excluded from the final analysis. Of the remaining 54 tissues, 28 (52%) were from females, and 26 (48%) were from males. The mean age was 59 years (SD 15 years). HER2 overexpression was highest in moderately differentiated tumours (p=0.0005). Intestinal type tumours had a higher occurrenc of HER2 overexpression than diffuse or mixed sub-types (p=0.0087). HER2 overexpression was not associated with age (p=0.27), sex (p=1.00) or anatomical location (p=1.00). CONCLUSION The occurrence of GGEAC HER2 overexpression in Zambian patients is similar to proportions reported elsewhere, and it is associated with moderately differentiated tumours of the intestinal type.
Collapse
Affiliation(s)
- Chimwasu Kasochi
- University Teaching Hospital, Department of Pathology, Nationalist Road, Private Bag RW1X, Lusaka, Zambia
| | - Peter Julius
- The University of Zambia, School of Medicine, Nationalist Road, PO Box 50110, Lusaka, Zambia
| | - Isaac Mweemba
- University Teaching Hospital, Department of Pathology, Nationalist Road, Private Bag RW1X, Lusaka, Zambia
| | - Violet Kayamba
- The University of Zambia, School of Medicine, Nationalist Road, PO Box 50110, Lusaka, Zambia
- Tropical Gastroenterology & Nutrition Group, Department of Internal Medicine, PO Box 50398, Nationalist Road, Lusaka, Zambia
| |
Collapse
|
5
|
Grenda A, Wojas-Krawczyk K, Skoczylas T, Krawczyk P, Sierocińska-Sawa J, Wallner G, Milanowski J. HER2 gene assessment in liquid biopsy of gastric and esophagogastric junction cancer patients qualified for surgery. BMC Gastroenterol 2020; 20:382. [PMID: 33198632 PMCID: PMC7670771 DOI: 10.1186/s12876-020-01531-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Accepted: 11/08/2020] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Amplification of HER2 gene (ERBB2) and overexpression of HER2 protein on cancer cells are found in 10-26% of gastric cancer (GC) and esophagogastric junction cancer (EGJC). Gene copy number variation (CNV) could be detected in these patients in liquid biopsy and in cancer cells. METHODS We analysed HER2 gene CNV used qPCR method in 87 sera collected from GC and EGJC patients before surgical treatment and in 40 sera obtained from healthy donors. HER2 gene CNV was also assessed in formalin-fixed paraffin-embedded (FFPE) tumor tissue. Furthermore, we assessed the number of HER2 gene copies and HER2 expression in cancer cells using the fluorescent in situ hybridization method (FISH) and immunohistochemistry (IHC). RESULTS We found that the HER2 gene copy number in liquid biopsy was higher in GC and EGJC patients compared to healthy people (p = 0.01). Moreover, EGJC patients had higher number of HER2 gene copies than healthy donors (p = 0.0016). HER2 CNV examination could distinguish healthy individuals and patients with gastric or esophagogastric junction cancers with sensitivity and specificity of 58% and 98% (AUC = 0.707, 95% CI 0.593-0.821, p = 0.004). We found that patients with a high copy number of the HER2 gene in the tumor tissue assessed by qPCR (but not by FISH) have significantly more often a high number of HER2 gene copies in liquid biopsy (p = 0.04). CONCLUSIONS We suggested that HER2 testing in liquid biopsy could be used as an auxiliary method to analysis of HER2 status in tumor tissue in gastric or esophagogastric junction cancers.
Collapse
Affiliation(s)
- Anna Grenda
- Chair and Department of Pneumology, Oncology and Allergology, Medical University of Lublin, Jaczewskiego 8, 20-090, Lublin, Poland.
| | - Kamila Wojas-Krawczyk
- Chair and Department of Pneumology, Oncology and Allergology, Medical University of Lublin, Jaczewskiego 8, 20-090, Lublin, Poland
| | - Tomasz Skoczylas
- II Chair and Department of General and Gastrointestinal Surgery and Surgical Oncology of the Alimentary Tract, Medical University of Lublin, Staszica 16, 20-080, Lublin, Poland
| | - Paweł Krawczyk
- Chair and Department of Pneumology, Oncology and Allergology, Medical University of Lublin, Jaczewskiego 8, 20-090, Lublin, Poland
| | - Jadwiga Sierocińska-Sawa
- Laboratory of Pathomorphology, Independent Public Clinical Hospital No. 1 in Lublin, ul. Staszica 11, 20-081, Lublin, Poland
| | - Grzegorz Wallner
- II Chair and Department of General and Gastrointestinal Surgery and Surgical Oncology of the Alimentary Tract, Medical University of Lublin, Staszica 16, 20-080, Lublin, Poland
| | - Janusz Milanowski
- Chair and Department of Pneumology, Oncology and Allergology, Medical University of Lublin, Jaczewskiego 8, 20-090, Lublin, Poland
| |
Collapse
|
6
|
Plum PS, Gebauer F, Krämer M, Alakus H, Berlth F, Chon SH, Schiffmann L, Zander T, Büttner R, Hölscher AH, Bruns CJ, Quaas A, Loeser H. HER2/neu (ERBB2) expression and gene amplification correlates with better survival in esophageal adenocarcinoma. BMC Cancer 2019; 19:38. [PMID: 30621632 PMCID: PMC6325716 DOI: 10.1186/s12885-018-5242-4] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Accepted: 12/21/2018] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND HER2 (ERBB2 or HER2/neu) is a tyrosine-kinase increasing cell proliferation. Overexpression/amplification of HER2 is correlated with worse prognosis in solid malignancies. Consequently, HER2 targeting is established in breast and upper gastrointestinal tract cancer. There are conflicting data concerning the impact of HER2 overexpression on esophageal adenocarcinoma (EAC), as most studies do not differ between cancers of the esophagus/gastroesophageal junction and the stomach. The aim of this study was to analyze the expression/amplification of HER2 in EAC in correlation to clinicopathological data to verify its prognostic impact. METHODS We analyzed 428 EAC patients that underwent transthoracic thoraco-abdominal esophagectomy between 1997 and 2014. We performed HER2 immunohistochemistry (IHC) according to the guidelines and fluorescence-in-situ-hybridization (FISH) for IHC score2+, using tissue micro arrays (TMA) with up to eight biopsies from the surface and infiltration area of a single tumor for evaluating HER2-heterogeneity and single-spot TMA. The HER2-status was correlated with clinicopathological data. RESULTS HER2-positivity was found in up to 14.9% in our cohort (IHC score 3+ or IHC score 2+ with gene amplification) and demonstrated a significantly better overall survival (OS) in correlation to HER2-negative tumors (median OS 70.1 vs. 24.6 months, p = 0.006). HER2-overexpression was more frequently seen in lower tumor stages (pT1/pT2, p = 0.038), in the absence of lymphatic metastases (pN0/pN+, p = 0.020), and was significantly associated with better histological grading (G1/G2) (p = 0.041). CONCLUSION We demonstrated a positive prognostic impact of HER2 overexpression in a large cohort of EAC, contrary to other solid malignancies including gastric cancer and breast cancer, but consistent to the results of a large study on EAC from 2012.
Collapse
Affiliation(s)
- Patrick Sven Plum
- Department of General, Visceral and Cancer Surgery, University Hospital Cologne, Cologne, Germany.,Gastrointestinal Cancer Group Cologne (GCGC), University Hospital of Cologne, Kerpener Str. 62, 50937, Cologne, Germany
| | - Florian Gebauer
- Department of General, Visceral and Cancer Surgery, University Hospital Cologne, Cologne, Germany.,Gastrointestinal Cancer Group Cologne (GCGC), University Hospital of Cologne, Kerpener Str. 62, 50937, Cologne, Germany
| | - Max Krämer
- Institute of Pathology, University Hospital Cologne, Kerpener Str. 62, 50937, Cologne, Germany
| | - Hakan Alakus
- Department of General, Visceral and Cancer Surgery, University Hospital Cologne, Cologne, Germany.,Gastrointestinal Cancer Group Cologne (GCGC), University Hospital of Cologne, Kerpener Str. 62, 50937, Cologne, Germany
| | - Felix Berlth
- Department of General, Visceral and Cancer Surgery, University Hospital Cologne, Cologne, Germany
| | - Seung-Hun Chon
- Department of General, Visceral and Cancer Surgery, University Hospital Cologne, Cologne, Germany
| | - Lars Schiffmann
- Department of General, Visceral and Cancer Surgery, University Hospital Cologne, Cologne, Germany
| | - Thomas Zander
- Department of Internal Medicine I, University Hospital Cologne, Cologne, Germany.,Gastrointestinal Cancer Group Cologne (GCGC), University Hospital of Cologne, Kerpener Str. 62, 50937, Cologne, Germany
| | - Reinhard Büttner
- Institute of Pathology, University Hospital Cologne, Kerpener Str. 62, 50937, Cologne, Germany
| | | | | | - Alexander Quaas
- Department of General, Visceral and Cancer Surgery, University Hospital Cologne, Cologne, Germany.,Gastrointestinal Cancer Group Cologne (GCGC), University Hospital of Cologne, Kerpener Str. 62, 50937, Cologne, Germany
| | - Heike Loeser
- Department of General, Visceral and Cancer Surgery, University Hospital Cologne, Cologne, Germany. .,Gastrointestinal Cancer Group Cologne (GCGC), University Hospital of Cologne, Kerpener Str. 62, 50937, Cologne, Germany.
| |
Collapse
|
7
|
Raj N, Verma D, Kumar A, Rai P, Rao RN. HER2 Oncogene Amplification and Immunohistochemical Profiling in Gastric Adenocarcinoma. Discoveries (Craiova) 2018; 6:e83. [PMID: 32309603 PMCID: PMC7086066 DOI: 10.15190/d.2018.6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Background and Objectives: Gastric adenocarcinoma is one of the most common malignant tumors and a major cause of cancer death worldwide, especially in developing countries. Her2/neu gene amplification and protein overexpression in breast cancer is a golden criterion for the targeted therapy with trastuzumab. However, the role of Her2 as a prognostic factor in gastric cancer is still controversial. The purpose of this study was to evaluate the frequency of Her2 oncogene overexpression and concordance between the results for Her2 protein expression and gene amplification. Materials and Methods: A total of 65 retroprospective cases with gastric adenocarcinoma, including biopsy and resected specimens obtained between July 2015 to December 2017, were analyzed. Her2/neu expression was determined by Immuno-histochemistry (IHC). Equivocal and some selected cases were submitted for FISH to detect Her2/neu gene amplification. Results: In the present study, out of 65 patients of gastric adenocarcinoma, there were 50 males and 15 females, with mean age of 54.52 years. The majority of tumors were located within the antropyloric region. We found 27 (41.4%) positivity, scored as IHC 3+ and IHC 2+, and 38 (58.3%) negativity, scored as IHC 1+ and IHC 0. We also evidentiated a significant difference between Her2/neu expression with age (p=0.010) and depth of invasion (p=0.020).Her2/neu gene was amplified only in 13 cases, 4 cases were of Her2/neu (3+) positive, 11 cases (39.3%) Her2/neu (2+) with IHC staining. The concordance rate between the results of IHC and FISH in all 18 cases was 83.3%. Conclusion: IHC detection can be carried out to guide the treatment when FISH detection cannot be performed. Overexpression of Her 2/neu in gastric adenocarcinoma could potentially be used in selecting the patients who can get benefit from the anti-Her2/neu targeted therapy.
Collapse
Affiliation(s)
- Nisha Raj
- Department of Pathology, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, India
| | - Divya Verma
- Department of Pathology, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, India
| | - Ashok Kumar
- Department of Surgical Gastroenterology, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, India
| | - Praveer Rai
- Department of Gastroenterology, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, India
| | - Ram Nawal Rao
- Department of Pathology, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, India
| |
Collapse
|
8
|
Rajadurai P, Fatt HK, Ching FY. Prevalence of HER2 Positivity and Its Clinicopathological Correlation in Locally Advanced/Metastatic Gastric Cancer Patients in Malaysia. J Gastrointest Cancer 2018; 49:150-157. [PMID: 28124769 PMCID: PMC5948243 DOI: 10.1007/s12029-017-9921-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Purpose Human epidermal growth factor receptor 2 (Erbb2/HER2) overexpression, which was previously detected in invasive breast cancer, has now been implicated in advanced gastric cancer (GC) and gastroesophageal junction cancer (GEC). A study was conducted to determine the rate of HER2 positivity in patients with locally advanced or metastatic GC and GEC in Malaysia and to assess the impact of various demographic and clinical parameters on HER2 positivity. Methods A total of 228 adult patients with GC or GEC were enrolled from Subang Jaya Medical Centre, Malaysia, for retrospective (210) and prospective study. All patients were subjected to the HER2 immunohistochemistry test using an FDA-approved, standardized test kit. Carcinomas scoring 2+ on immunohistochemistry were further tested with HER2 in situ hybridization (ISH) using an FDA-approved test kit. Results The overall rate of HER2 positivity in the population studied was 24.6% (n = 56). The rate was significantly higher in men than in women (29.6 vs. 16.3%; p = 0.024). HER2 overexpression was significantly more common in diffuse type than in intestinal type of tumors (39.8 vs. 14.9%; p < 0.001). In our study, out of 56 samples, 44 (78.6%) were considered for gene amplification testing, out of which 40 (90.1%) samples showed gene amplification. There was no statistically significant correlation between HER2 positivity and patient age, race, tumor location, tumor differentiation, and TNM staging. Conclusions HER2 overexpression was evident in nearly 25% of the Malaysian patients with locally advanced or metastatic gastric cancer. The overexpression correlated significantly with male gender and diffuse-type tumors. The majority of the IHC-positive tumors demonstrated c-erb2 gene amplification and this finding reached statistical significance.
Collapse
Affiliation(s)
- Pathmanathan Rajadurai
- Department of Pathology, Subang Jaya Medical Centre, Subang Jaya, Sunway Medical Centre, Monash University Malaysia, 1, Jalan SS 12/1A, 47500, Subang Jaya, Selangor, Malaysia.
| | - Ho Kean Fatt
- Mount Miriam Cancer Hospital, Tanjung Tokong, Penang, Malaysia
| | - Foo Yoke Ching
- Subang Jaya Medical Centre, Subang Jaya, Selangor, Malaysia
| |
Collapse
|
9
|
Nadaf AS, Rani H, Dinesh US. Immuno-Histochemical Assessment of HER2NEU Expression in Gastric Adenocarcinoma in North Karnataka, India. Asian Pac J Cancer Prev 2018; 19:1381-1385. [PMID: 29802704 PMCID: PMC6031826 DOI: 10.22034/apjcp.2018.19.5.1381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Background and Objectives: Gastric cancer is the fourth most common cancer worldwide and ranks fifth in India.
Surgical resection is curative in early stage gastric cancers. Most of the gastric cancers are diagnosed at an advanced
stage necessitating multimodality treatment strategies. Based on the ToGA trial, the international regulatory agencies
have recently approved trastuzumab in locally advanced and metastatic gastric and gastroesophageal adenocarcinomas
expressing HER2. Since there are limited studies from India and no published data available from this part of North
Karnataka, we undertook this study to evaluate the frequency of expression of HER2 in gastric and gastroesophageal
adenocarcinomas and to correlate it with various clinicopathological variables. Methodology: The study was conducted
in the Department of Pathology, SDM College of Medical Sciences and Hospital, Dharwad, Karnataka from May 2012
to January 2016. The samples included both endoscopic biopsies and gastrectomies. Histopathological slides from 70
cases were reviewed. Immunohistochemical staining for HER2 was performed in all the cases and Hoffman’s gastric
cancer scoring system was employed. The results of HER2 expression was correlated with various clinicopathological
parameters. Results: HER2 positivity was seen in 16/70 cases (23%). 6 cases (8.5%) were equivocal and 48/70 cases
(68.5%) were HER2 negative. HER2 positivity was more common in GEJ cancers and intestinal type of adenocarcinoma.
However, it did not correlate with age, gender, grade and stage. Conclusion: HER2 positivity was noted in 23% of the
cases. 23.4% of intestinal type and 21.7% of diffuse type were HER2 positive. HER2 positivity did not significantly
depend on age, gender, tumour type, grade and stage. Hence, HER2 remains as an independent biomarker and should be
tested in all patients of gastric cancer regardless of the clinicopathological findings for offering a personalized treatment.
Collapse
Affiliation(s)
- Asmanaz Saleem Nadaf
- Department of Pathology, SDM Medical College and Hospital, Dharwad, Karnataka, India.
| | | | | |
Collapse
|
10
|
Jindal V, Arora E, Masab M, Gupta S. Chimeric antigen receptor T cell therapy in pancreatic cancer: from research to practice. Med Oncol 2018; 35:84. [PMID: 29728788 DOI: 10.1007/s12032-018-1145-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2018] [Accepted: 05/01/2018] [Indexed: 12/20/2022]
Abstract
Chimeric antigen receptor (CAR) T cell therapy is genetically engineered tumor antigen-specific anticancer immunotherapy, which after showing great success in hematological malignancies is currently being tried in advanced solid tumors like pancreatic cancer. Immunosuppressive tumor microenvironment and dense fibrous stroma are some of the limitation in the success of this novel therapy. However, genetic modifications and combination therapy is the topic of the research to improve its efficacy. In this article, we summarize the current state of knowledge, limitations, and future prospects for CAR T cell therapy in pancreatic cancer.
Collapse
Affiliation(s)
- Vishal Jindal
- Department of Internal Medicine, Saint Vincent Hospital, 123 Summer Street, Worcester, 01608, USA.
| | - Ena Arora
- Department of Internal Medicine, Government Medical College, Chandigarh, India
| | - Muhammad Masab
- Department of Internal Medicine, Einstein Healthcare Network, Philadelphia, USA
| | - Sorab Gupta
- Department of Hematology and Oncology, Einstein Healthcare Network, Philadelphia, USA
| |
Collapse
|
11
|
Patne SCU, Abhilash VB, Dixit VK, Katiyar R, Kumar S, Singh GP. Immunohistochemical Expression of Human Epidermal Growth Factor Receptor 2 (HER2) and p53 in Gastric Adenocarcinoma: A Pilot Study from Northern India. J Clin Diagn Res 2017; 11:EC43-EC45. [PMID: 28658772 DOI: 10.7860/jcdr/2017/25650.9921] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Accepted: 02/05/2017] [Indexed: 12/12/2022]
Abstract
INTRODUCTION After the recent approval of Trastuzumab (anti-HER2 antibody) for the treatment of HER2 overexpressed Gastric Adenocarcinoma (GA), importance of HER2 testing is increasingly recognized. However, there is paucity of studies for HER2 overexpression in the Indian patients of GA. Similarly, study of p53 expression in the Indian patients of GA is infrequent. AIM To study immunohistochemical expression of HER2 and p53 in GA biopsy samples. MATERIALS AND METHODS This was a cross-sectional observational study. The expression of HER2 and p53 by immunohistochemistry were analyzed in 50 cases of GA. The HER2 expression was scored as negative (0 and 1+), equivocal (2+), and overexpression (3+). The p53 expression was quantified as negative (0-9% tumour cells) and positive (≥10% tumour cells). The intensity of p53 expression was assessed as strong and weak. RESULTS Mean age of the patients was 56.8±14.8 years. Male:female ratio was 2:1. Histological types of adenocarcinoma were intestinal (68%), diffuse (28%), and indeterminate (4%). HER2 overexpression and equivocal results were present in 10% cases, each. Overall, a positive expression of p53 was seen in 72% (strong and weak intensities: 66.7% and 33.3% cases, respectively). CONCLUSION As compared to HER2 overexpression, a higher incidence of p53 expression was seen (10% vs.72%) in GA.
Collapse
Affiliation(s)
- Shashikant C U Patne
- Associate Professor, Department of Pathology, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - V B Abhilash
- Ex-Senior Resident, Department of Gastroenterology, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Vinod Kumar Dixit
- Professor and Head, Department of Gastroenterology, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Richa Katiyar
- Senior Resident, Department of Pathology, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Sandip Kumar
- Associate Professor, Department of Pathology, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Gyan Prakash Singh
- Professor, Department of Community Medicine, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| |
Collapse
|
12
|
Lei YY, Huang JY, Zhao QR, Jiang N, Xu HM, Wang ZN, Li HQ, Zhang SB, Sun Z. The clinicopathological parameters and prognostic significance of HER2 expression in gastric cancer patients: a meta-analysis of literature. World J Surg Oncol 2017; 15:68. [PMID: 28327158 PMCID: PMC5359900 DOI: 10.1186/s12957-017-1132-5] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Accepted: 03/06/2017] [Indexed: 12/31/2022] Open
Abstract
Background Human epidermal growth factor receptor-2 (HER2) is regarded as an important and promising target in the treatment of HER2-positive breast cancers. However, the correlation of clinicopathological characteristics and prognostic significance of HER2 overexpression in gastric cancer patients remains unclear. Our aim was to clarify this issue. Methods Embase, PubMed, and the Cochrane Library were searched for relevant articles published up to May 2016. Outcomes of interest contained sex, age, tumor size, tumor site, tumor node metastasis (TNM) stage, distant metastasis, lymph node metastasis, Lauren’s classification, differentiation grade, lymphovascular invasion, neural invasion, and multivariate analysis data for overall survival. Results A total of 41 studies of 17,494 gastric cancer patients were identified with HER2 test. HER2 positive rate was 19.07% (95% CI = 9.16, 28.98). There existed statistical significance between HER2 overexpression and patients’ prognosis (RR = 1.47, 95% CI = 1.09, 1.98). Male patients (OR = 1.48, 95% CI = 1.34, 1.65), proximal tumors (OR = 1.25, 95% CI = 1.07, 1.47), intestinal-type tumors (OR = 3.37, 95% CI = 2.54, 4.47), advanced stage cancers (OR = 1.35, 95% CI = 1.10, 1.66), lymph node metastasis (OR = 1.26, 95% CI = 1.14, 1.41), well-differentiated cancers (OR = 1.79, 95% CI = 1.15, 2.76), and distant metastasis (OR = 1.91, 95% CI = 1.08, 3.38) were correlated with higher HER2 expression rates. However, no statistical differences existed in age, tumor size, lymphovascular invasion, or neural invasion. Subgroup analysis revealed that HER2 expression rates reported in articles from Asian (19.52%) countries were quantitatively higher than those from European (16.91%) areas. Results were consistent with those reports that define HER2 status according to trastuzumab for gastric cancer (ToGA) criteria. Conclusion This study showed that HER2 overexpression was associated with poor prognosis in gastric cancer patients. HER2 positive rates may be associated with sex, tumor site, TNM staging system, distant metastasis, lymph node metastasis, Lauren’s classification, and differentiation grade in gastric cancer patients. The HER2 expression rate in Asians may be higher than that in Europeans. This study offers a convenient way for doctors to select patients for relevant HER2 detection and following treatment. Electronic supplementary material The online version of this article (doi:10.1186/s12957-017-1132-5) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Yu-Ying Lei
- Department of Surgical Oncology, First Affiliated Hospital of China Medical University, 110001, Shenyang, Liaoning, China
| | - Jin-Yu Huang
- Department of Surgical Oncology, First Affiliated Hospital of China Medical University, 110001, Shenyang, Liaoning, China
| | - Qiong-Rui Zhao
- Department of Evidence Based Medicine, First Affiliated Hospital of China Medical University, 110001, Shenyang, Liaoning, China
| | - Nan Jiang
- International Education School, China Medical University, 110001, Shenyang, Liaoning, China
| | - Hui-Mian Xu
- Department of Surgical Oncology, First Affiliated Hospital of China Medical University, 110001, Shenyang, Liaoning, China
| | - Zhen-Ning Wang
- Department of Surgical Oncology, First Affiliated Hospital of China Medical University, 110001, Shenyang, Liaoning, China
| | - Hai-Qing Li
- Department of Surgical Oncology, First Affiliated Hospital of China Medical University, 110001, Shenyang, Liaoning, China
| | - Shi-Bo Zhang
- Department of Surgical Oncology, First Affiliated Hospital of China Medical University, 110001, Shenyang, Liaoning, China
| | - Zhe Sun
- Department of Surgical Oncology, First Affiliated Hospital of China Medical University, 110001, Shenyang, Liaoning, China.
| |
Collapse
|
13
|
Qiao YM, Zhang Y. Immunotherapy for esophageal cancer: Current studies and future perspectives. Shijie Huaren Xiaohua Zazhi 2016; 24:4739-4751. [DOI: 10.11569/wcjd.v24.i36.4739] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Esophageal cancer is one of the most common malignant tumors of the digestive system, and China has the highest morbidity and mortality rates of esophageal cancer in the world. Currently, main therapies for esophageal cancer include endoscopy, surgery, chemotherapy, and radiotherapy. These traditional treatments have appreciated clinical effects, but the prognosis of this malignancy is still poor. There is accumulating evidence that tumor immune microenvironment plays a key role in the development and progression of esophageal cancer. Recent clinical investigations and ongoing studies indicate that immunotherapy might have a great potential in the treatment of patients with esophageal cancer. Future studies will identify treatment strategies that can maximize therapeutic benefits by combining immunotherapies with existing and novel treatment modalities.
Collapse
|
14
|
Hadi AA, Hindawi AE, Hareedy A, Khalil H, Ashiry RA, Elia S, Sadek A, Magdy M, Atta R, Anas A, Bakr H, Hammam O. Her2/neu Protein Expression and Oncogene Amplification in Gastric Carcinoma with Clinico-Pathological Correlation in Egyptian Patients. Open Access Maced J Med Sci 2016; 4:535-542. [PMID: 28028387 PMCID: PMC5175495 DOI: 10.3889/oamjms.2016.104] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Revised: 09/04/2016] [Accepted: 09/05/2016] [Indexed: 12/28/2022] Open
Abstract
AIM Amplification of the Her2/neu gene and overexpression of the Her2/neu protein in gastric carcinoma (GC) is a golden criterion for target therapy with trastuzumab (Herceptin). We aim to evaluate the immunohistochemical protein expression and amplification of the oncogene Her2/neu by FISH technique in the epithelial gastric carcinoma and to compare their association with different clinicopathologic parameters aiming at identifying positive cases that may benefit from targeted therapy. MATERIALS AND METHODS This study was done on eighty-five tumour tissue samples from patients with GC as well as thirty non-malignant lesions (Gastritis, intestinal metaplasia, adenoma with low-grade dysplasia, adenoma with high-grade dysplasia). All were immunohistochemically stained with Her2/neu antibody. RESULTS All equivocal and some selected GC cases were submitted for FISH technique to detect Her2/neu gene amplification. By immunohistochemistry twenty-three cases (27%) were defined as positive for Her2/neu gene amplification and/or protein overexpression. The levels of Her2/neu positive (3+), Her2/neu equivocal (2+) and Her2/neu negative (1+/0) were measurable in 14.2%, 32.9% and 52.9% of the samples, respectively. FISH showed that Her2/neu gene was amplified in 22 cases, 10 Her2/neu positive (3+), 11 (39.3%) Her2/neu equivocal (2+) and 1 Her2/neu negative (1+) cases with IHC staining those who can benefit from anti Her2/neu target therapy. Her2/neu was overexpressed positivity (3+) more in intestinal type and mixed carcinoma, and moderately differentiated tumours. None of gastritis, intestinal metaplasia or adenoma with low-grade dysplasia cases showed positivity for Her2/neu (3+). The Her2/neu positivity (3+) was associated with both adenocarcinoma cases and high-grade dysplasia (P = 0.002). CONCLUSIONS The results highlight the necessity of FISH test for further categorization when gastric cancer cases are equivocal (2+) by IHC to determine eligibility for the targeted therapy. Stepwise increase in the expression of Her2/neu was seen in low-grade dysplasia, high-grade dysplasia and carcinoma cases implying its role in cancer evolution. Overexpression of Her 2/neu in GC patients can be promising in selecting those who can get benefit from anti-Her2/neu target therapy.
Collapse
Affiliation(s)
| | | | - Amal Hareedy
- Faculty of Medicine Cairo University, Cairo, Egypt
| | - Heba Khalil
- Theodor Bilharz Research Institute, Imbaba, Giza, Cairo, Egypt
| | - Ranya Al Ashiry
- Theodor Bilharz Research Institute, Imbaba, Giza, Cairo, Egypt
| | - Shady Elia
- Faculty of Medicine Cairo University, Cairo, Egypt
| | - Ahmed Sadek
- Theodor Bilharz Research Institute, Imbaba, Giza, Cairo, Egypt
| | - Mona Magdy
- Theodor Bilharz Research Institute, Imbaba, Giza, Cairo, Egypt
| | - Rafatt Atta
- Theodor Bilharz Research Institute, Imbaba, Giza, Cairo, Egypt
| | - Amgad Anas
- Theodor Bilharz Research Institute, Imbaba, Giza, Cairo, Egypt
| | - Hisham Bakr
- General Surgery & Surgical Oncology, Ain Shams University, Cairo, Egypt
| | - Olfat Hammam
- Theodor Bilharz Research Institute, Imbaba, Giza, Cairo, Egypt
| |
Collapse
|
15
|
Prognostic values of four Notch receptor mRNA expression in gastric cancer. Sci Rep 2016; 6:28044. [PMID: 27363496 PMCID: PMC4929462 DOI: 10.1038/srep28044] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Accepted: 05/23/2016] [Indexed: 01/09/2023] Open
Abstract
Notch ligands and receptors are frequently deregulated in several human malignancies including gastric cancer. The activation of Notch signaling has been reported to contribute to gastric carcinogenesis and progression. However, the prognostic roles of individual Notch receptors in gastric cancer patients remain elusive. In the current study, we accessed the prognostic roles of four Notch receptors, Notch 1-4, in gastric cancer patients through "The Kaplan-Meier plotter" (KM plotter) database, in which updated gene expression data and survival information include a total of 876 gastric cancer patients. All four Notch receptors' high mRNA expression was found to be correlated to worsen overall survival (OS) for all gastric cancer patients followed for 20 years. We further accessed the prognostic roles of individual Notch receptors in different clinicopathological features using Lauren classification, pathological grades, clinical grades, HER2 status and different choices of treatments of gastric cancer patients. These results indicate that there are critical prognostic values of the four Notch receptors in gastric cancer. This information will be useful for better understanding of the heterogeneity and complexity in the molecular biology of gastric cancer and to develop tools to more accurately predict their prognosis.
Collapse
|
16
|
Li K, Guo X, Wang Z, Li X, Bu Y, Bai X, Zheng L, Huang Y. The prognostic roles of ALDH1 isoenzymes in gastric cancer. Onco Targets Ther 2016; 9:3405-14. [PMID: 27354812 PMCID: PMC4907742 DOI: 10.2147/ott.s102314] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Increased aldehyde dehydrogenase 1 (ALDH1) activity has been determined to be present in the stem cells of several kinds of cancers including gastric cancer (GC). Nevertheless, which ones of ALDH1's isoenzymes are leading to ALDH1 activity remains elusive. In this study, we examined the prognostic value and hazard ratio (HR) of individual ALDH1 isoenzymes in patients with GC using "The Kaplan-Meier plotter" database. mRNA high expression level of ALDH1A1 was not found to be significantly correlated with the overall survival (OS) of all patients with GC followed for 20 years, HR =0.86 (95% confidence interval [CI]: 0.7-1.05), P=0.13. mRNA high expression level of ALDH1A2 was also not significantly correlated with OS for all patients with GC, HR =1.13 (95% CI: 0.91-1.41), P=0.25. mRNA high expression level of ALDH1A3 was found to be significantly correlated with worsened OS in either intestinal-type patients, HR =2.24 (95% CI: 1.44-3.49), P=0.00026, or diffuse-type patients, HR =1.91 (95% CI: 1.02-3.59), P=0.04. Interestingly, mRNA high expression level of ALDH1B1 was found to be significantly correlated with better OS for all patients with GC, HR =0.66 (95% CI: 0.53-0.81), P=7.8e-05, and mRNA high expression level of ALDH1L1 was found to be significantly correlated with worsened OS for all patients with GC, HR =1.23 (95% CI: 1-1.51), P=0.048. Furthermore, our results also indicate that ALDH1A3 and ALDH1L1 are potential major contributors to the ALDH1 activity in GC, since mRNA high expression levels of ALDH1A3 and ALDH1L1 were found to be significantly correlated with worsened OS for all patients with GC. Based on our study, ALDH1A3 and ALDH1L1 are potential prognostic markers and therapeutic targets for patients with GC.
Collapse
Affiliation(s)
- Kai Li
- Hepatobiliary Treatment Center, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China; Department of Medical Oncology, Baotou Cancer Hospital, Baotou, Inner Mongolia, People's Republic of China
| | - Xiaoguang Guo
- Surgical Department, Baotou Cancer Hospital, Baotou, Inner Mongolia, People's Republic of China
| | - Ziwei Wang
- Department of Gastrointestinal Surgery, First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Xiaofeng Li
- Department of Medical Oncology, Baotou Cancer Hospital, Baotou, Inner Mongolia, People's Republic of China
| | - Youquan Bu
- Department of Biology, Chongqing Medical University, Chongqing, People's Republic of China
| | - Xuefeng Bai
- Department of Pathology, Baotou Cancer Hospital, Baotou, Inner Mongolia, People's Republic of China
| | - Liansheng Zheng
- Surgical Oncology, Baotou Cancer Hospital, Baotou, Inner Mongolia, People's Republic of China
| | - Ying Huang
- Department of Medical Oncology, Baotou Cancer Hospital, Baotou, Inner Mongolia, People's Republic of China
| |
Collapse
|
17
|
Li X, Zhao H, Gu J, Zheng L. Prognostic role of HER2 amplification based on fluorescence in situ hybridization (FISH) in pancreatic ductal adenocarcinoma (PDAC): a meta-analysis. World J Surg Oncol 2016; 14:38. [PMID: 26897036 PMCID: PMC4761213 DOI: 10.1186/s12957-016-0792-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 02/16/2016] [Indexed: 12/18/2022] Open
Abstract
Background Previous studies have shown that human epidermal growth factor receptor 2 (HER2) may play an important role in the invasion and metastasis of pancreatic cancer, but the relationship between HER2 amplification level and prognosis of pancreatic cancer patients is still controversial. Therefore, we performed a meta-analysis to determine the prognostic significance of HER2 amplification based on fluorescence in situ hybridization (FISH) in patients with pancreatic cancer. Methods PubMed, EMBASE, and Web of Science (Jan 2001 to Jun 2015) were searched. Only articles that detect the HER2 amplification by FISH method were included. RevMan 5.3 and STATA version 12 were used to perform this meta-analysis. Pooled calculations were carried out on hazard ratio (HR) and 95 % confidence interval (CI) to assess the risk of disease. Results A total of six eligible studies were enrolled in meta-analysis. The univariate analysis results showed that HER2 amplification was not significantly associated with patients’ overall survival (pooled HR, 1.87, 95 % CI, 0.64–5.46, P = 0.25), which are maintained in one study of multivariate analysis (HR 0.51, 95 % CI, 0.12–2.14, P = 0.358). HER2 amplification also had no correlation with clinicopathological factors such as age, gender, lymph node metastasis, and tumor stage. Conclusions Our results showed that HER2 amplification based on FISH may not be a good prognostic factor for survival in patients with pancreatic cancer.
Collapse
Affiliation(s)
- Xiaoping Li
- Department of Oncology, Xinhua Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, 200092, China.
| | - Hua Zhao
- Department of Oncology, Baoshan People Hospital, Yunnan, 678000, China
| | - Jianchun Gu
- Department of Oncology, Xinhua Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, 200092, China
| | - Leizhen Zheng
- Department of Oncology, Xinhua Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, 200092, China
| |
Collapse
|