Abstract:
BACKGROUND:Lung adenocarcinoma with EGFR activating mutations will inevitably acquire resistance to first generation TKIs. Acquired EGFR T790M mutation causes about 50% of these resistance cases. Droplet digital PCR (ddPCR) and cobas enables quantification of T790M mutation. Whether these methods can predict clinical response of osimertinib treatment is unknown. METHODS:Tumor and blood samples from 69 stage IIIB-IV NSCLC patients acquired resistance to EGFR-TKI were collected. Cobas® Mutation Test v2 kit was used to detect EGFR mutations in FFPE or plasma samples. Plasma T790M mutation of both osimertinib naïve and treated patients were quantified by Droplet digital PCR (ddPCR). RESULTS:T790M mutation rate detected by FFPE tissue cobas, plasma ctDNA cobas and plasma ctDNA ddPCR test were 54.5, 21.3 and 30.4% respectively. The T790M positive rate was 52.2% considering all testing methods. The objective response rate (ORR) was 60.9% in 23 patients received osimertinib treatment. Quantification of T790M after treatment decreased to very low level, but no association was observed between clinical response and T790M mutation level decrease. CONCLUSION:ddPCR is more sensitive in plama ctDNA testing and should be performed even in tumor tissue T790M test negative cases. EGFR T790M mutation level is not associated with clinical response after osimertinib treatment.
journal_name
Diagn Patholjournal_title
Diagnostic pathologyauthors
Li C,Jia R,Liu H,Zhang B,Wang Cdoi
10.1186/s13000-018-0728-6subject
Has Abstractpub_date
2018-08-13 00:00:00pages
49issue
1issn
1746-1596pii
10.1186/s13000-018-0728-6journal_volume
13pub_type
杂志文章abstract:BACKGROUND:Microsatellite-unstable colorectal cancers (CRC) that are due to deficient DNA mismatch repair (dMMR) represent approximately 15% of all CRCs in the United States. These microsatellite-unstable CRCs represent a heterogenous group of diseases with distinct oncogenesis pathways. There are overlapping clinicopa...
journal_title:Diagnostic pathology
pub_type: 杂志文章,评审
doi:10.1186/s13000-017-0613-8
更新日期:2017-03-04 00:00:00
abstract:UNLABELLED:As rare condition, mucoepidermoid carcinoma may occur in liver although its etiology and pathogenesis is still unclear. We report here a case of intrahepatic mucoepidermoid carcinoma misdiagnosed as cholangiocarcinoma and squamous cell carcinoma by preoperative radiologic and intraoperative histological exam...
journal_title:Diagnostic pathology
pub_type: 杂志文章
doi:10.1186/1746-1596-9-24
更新日期:2014-01-29 00:00:00
abstract:BACKGROUND:Hypermethylation of the promoter region of the RAS association domain family 1A gene (RASSF1A) occurs widely in hepatocellular carcinoma (HCC) tissues. While the diagnostic performance of the use of RASSF1A methylation as a serum or plasma marker in patients with HCC has varied largely in the literature,we c...
journal_title:Diagnostic pathology
pub_type: 杂志文章
doi:10.1186/s13000-015-0317-x
更新日期:2015-08-04 00:00:00
abstract:BACKGROUND:The aim of this report is related to adult primary paratesticular mesenchymal tumors with emphasis on a case presentation and discussion of the spermatic cord leiomyosarcoma. Primary paratesticular tumors are rare, only accounting for 7% to 10% of all intrascrotal tumors. In adults, more than 75% of these le...
journal_title:Diagnostic pathology
pub_type: 杂志文章
doi:10.1186/1746-1596-9-90
更新日期:2014-05-06 00:00:00
abstract:BACKGROUND:Gastrointestinal stromal tumors (GISTs), a type of mesenchymal tumor in the gastrointestinal tract, are believed to be closely associated with PDGFRA and C-KIT mutations. Schwannoma in the stomach, which is an unusual location, is a rare disorder. The simultaneous occurrence of the two diseases is rarer than...
journal_title:Diagnostic pathology
pub_type: 杂志文章
doi:10.1186/s13000-019-0898-x
更新日期:2019-10-23 00:00:00
abstract:BACKGROUND:Reduced DNA repair capacities due to inherited polymorphisms may increase the susceptibility to cancers including gastric cancer. Previous studies investigating the association between Xeroderma Pigmentosum group C (XPC) gene polymorphisms and gastric cancer risk reported inconsistent results. We performed a...
journal_title:Diagnostic pathology
pub_type: 杂志文章,meta分析,评审
doi:10.1186/1746-1596-9-96
更新日期:2014-05-23 00:00:00
abstract:BACKGROUND:This study is to investigate the expression of progranulin (PGRN) in systemic lupus erythematosus (SLE) patients and the effect of glucocorticoid (GC) treatment on its expression. METHODS:Thirty newly diagnosed severe SLE patients and 30 healthy subjects were enrolled in this study. The serum levels of PGRN...
journal_title:Diagnostic pathology
pub_type: 杂志文章
doi:10.1186/1746-1596-8-88
更新日期:2013-05-23 00:00:00
abstract::Tumours of ovarian-epithelial type of the testis, including serous borderline tumours, represent very rare entities. They are identical to the surface epithelial tumours of the ovary and have been reported in patients from 14 to 68 years of age. We describe two cases of a 46- and a 39-year old man with incidental find...
journal_title:Diagnostic pathology
pub_type: 杂志文章
doi:10.1186/s13000-015-0342-9
更新日期:2015-07-22 00:00:00
abstract:UNLABELLED:CD5-positive marginal zone B-cell lymphoma of the mucosa-associated lymphoid tissue (MALT) of the lung is very rare. An 82-year-old Japanese woman was found to have an abnormal lung shadow on chest X-ray photography, and was admitted to our hospital. Imaging modalities including X-ray photography, computed t...
journal_title:Diagnostic pathology
pub_type: 杂志文章
doi:10.1186/1746-1596-7-16
更新日期:2012-02-14 00:00:00
abstract:BACKGROUND:Ki67 is currently the proliferation biomarker of choice, with both prognostic and predictive value in breast cancer. A lack of consensus regarding Ki67 use in pre-analytical, analytical and post-analytical practice may hinder its formal acceptance in the clinical setting. METHODS:One hundred breast cancer s...
journal_title:Diagnostic pathology
pub_type: 杂志文章
doi:10.1186/1746-1596-9-118
更新日期:2014-06-16 00:00:00
abstract:BACKGROUND:IL4Rα and IL13Rα1 are constituents of the type II IL4 receptor. Recently, IL4Rα and IL13Rα1 were reported to have roles in cancer progression and suggested as potential prognostic markers. However, studies on IL4Rα and IL13Rα1 in soft-tissue sarcomas have been limited. METHODS:This study investigated the im...
journal_title:Diagnostic pathology
pub_type: 杂志文章
doi:10.1186/s13000-020-01066-z
更新日期:2021-01-09 00:00:00
abstract:UNLABELLED:Imaging appearance of cyst-like changes is most frequently described in primary neuroendocrine lesions, especially pancreatic NETs.The imaging finding of a pseudocystic lesion of the liver puts in differential diagnosis many pathologies such as infectious diseases, simple biliary cysts up to biliary cystaden...
journal_title:Diagnostic pathology
pub_type: 杂志文章,评审
doi:10.1186/1746-1596-8-148
更新日期:2013-09-13 00:00:00
abstract:BACKGROUND:The uterine endometrial polyp (EMP) has a potential risk of developing malignant tumors especially in postmenopausal women. These malignancies include endometrial intraepithelial carcinoma (EIC). PATIENTS AND METHODS:Eight patients with EIC in the EMP, who were postmenopausal with ages ranging from 49 to 76...
journal_title:Diagnostic pathology
pub_type: 杂志文章
doi:10.1186/1746-1596-8-25
更新日期:2013-02-15 00:00:00
abstract:BACKGROUND:To distinguish between malignant and benign lesions of the thyroid gland histological demonstration is often required since the fine-needle aspiration biopsy method applied pre-operatively has some limitations. In an attempt to improve diagnostic accuracy, markers using immunocytochemistry and immunohistoche...
journal_title:Diagnostic pathology
pub_type: 杂志文章,meta分析,评审
doi:10.1186/1746-1596-7-97
更新日期:2012-08-13 00:00:00
abstract:BACKGROUND:Primary central nervous system (CNS) diffuse large B-cell lymphoma (DLBCL) is a rare intracranial tumor, defined as DLBCL arising from the brain, spinal cord, leptomeninges and eye, with an overall annual incidence of 5 cases per million. The primary CNS anaplastic variant of DLBCL (A-DLBCL) is even less com...
journal_title:Diagnostic pathology
pub_type: 杂志文章
doi:10.1186/s13000-019-0826-0
更新日期:2019-05-20 00:00:00
abstract:UNLABELLED:Atypical teratoid/rhabdoid tumors are rare and highly malignant central nervous system tumors. They have no specific radiological features and often present several histological components that make a problem in differential diagnosis with medulloblastoma and primitive neuroectodermal tumors. We present the ...
journal_title:Diagnostic pathology
pub_type: 杂志文章
doi:10.1186/s13000-015-0284-2
更新日期:2015-05-02 00:00:00
abstract:INTRODUCTION:Necrobiosis lipoidica diabeticorum is a rare disease of unclear etiology, that occurs in about 1% of diabetic patients. CASE REPORT:We present case of granulomatosis disciformis chronica et progressiva Miescher with good response to systemic corticosteroids therapy.Patient 45 years old woman, with primary...
journal_title:Diagnostic pathology
pub_type: 杂志文章
doi:10.1186/1746-1596-4-28
更新日期:2009-08-28 00:00:00
abstract:BACKGROUND:c-MET is an oncogene protein that plays important role in gastric carcinogenesis and has been introduced as a prognostic marker and potential therapeutic target. The aim of this study was to evaluate the frequency of c-MET overexpression and its relationship with clinicopathological variables in gastric canc...
journal_title:Diagnostic pathology
pub_type: 杂志文章
doi:10.1186/1746-1596-7-57
更新日期:2012-05-28 00:00:00
abstract::This study is an initial investigation on the capability of multispectral imaging to capture subtle spectral information that would enable the automatic delineation between the eosinophilic esophagitis and other eosin stained tissue components, especially the RBCs. In the method, a principal component analysis (PCA) w...
journal_title:Diagnostic pathology
pub_type: 杂志文章
doi:10.1186/1746-1596-6-S1-S2
更新日期:2011-03-30 00:00:00
abstract:BACKGROUND:Gastric mixed neuroendocrine-non-neuroendocrine neoplasms (MiNENs) are infrequently encountered in routine practice. Some gastric neuroendocrine carcinomas (NECs) have a variety of differentiation patterns; however, pancreatic acinar differentiation in gastric NECs is rare. The molecular abnormalities of NEC...
journal_title:Diagnostic pathology
pub_type: 杂志文章
doi:10.1186/s13000-019-0815-3
更新日期:2019-05-10 00:00:00
abstract:BACKGROUND:Special AT-rich sequence binding protein 1 (SATB1) is found acting as a "genome organizer" that functions as a landing platform to regulate tissue-specific gene ex-pression. In breast cancer cell lines it has been proven that SATB1 could upregulate the expression of the HER2. In this paper, the relevance of ...
journal_title:Diagnostic pathology
pub_type: 杂志文章
doi:10.1186/s13000-015-0282-4
更新日期:2015-05-09 00:00:00
abstract:BACKGROUND:Metastatic spread of tumor through lymphatic vasculature is an important adverse prognostic factor in a variety of human cancer and tumor lymphangiogenesis requires the interplay of several growth factors. Platelet-derived growth factor (PDGF)-BB and vascular endothelial growth factor (VEGF)-C are two import...
journal_title:Diagnostic pathology
pub_type: 杂志文章
doi:10.1186/1746-1596-9-128
更新日期:2014-06-27 00:00:00
abstract::Intravascular large cell lymphoma is a rare subtype of extranodal large cell lymphoma characterized by the presence of neoplastic cells within the lumina of small vessels. Most cases of intravascular large cell lymphoma have a B-cell phenotype. To date, 12 cases of intravascular natural killer (NK/)/T-cell lymphoma (I...
journal_title:Diagnostic pathology
pub_type: 杂志文章,评审
doi:10.1186/s13000-015-0330-0
更新日期:2015-07-16 00:00:00
abstract::A case of prenatally diagnosed, giant cord hemangioma is reported, which was accompanied by the elevation of maternal serum alpha-fetoprotein (MS-AFP) and human chorionic gonadotropin (MS-hCG) levels. A 30-year-old woman without a previous history of gravida or para, presented with intermittent abdominal pain at 26 we...
journal_title:Diagnostic pathology
pub_type: 杂志文章,评审
doi:10.1186/s13000-015-0385-y
更新日期:2015-09-04 00:00:00
abstract:BACKGROUND:Acute promyelocytic leukemia is a cytogenetically well defined entity. Nevertheless, some features observed at diagnosis are related to a worse outcome of the patients. METHODS:In a prospective study, we analyzed peripheral (PB) leukocyte count, immunophenotype, methylation status of CDKN2B, CDKN2A and TP73...
journal_title:Diagnostic pathology
pub_type: 杂志文章
doi:10.1186/1746-1596-7-75
更新日期:2012-06-28 00:00:00
abstract:OBJECTIVES:Non-Hodgkin's lymphoma (NHL) primarily derived from the base of the tongue, is rare. Human papillomavirus (HPV) and Epstein-Barr virus (EBV) are important aetiological risk factors for tumours of the head and neck. This study describes the clinicopathological features of NHL in the tongue base and the status...
journal_title:Diagnostic pathology
pub_type: 杂志文章
doi:10.1186/s13000-020-00936-w
更新日期:2020-04-01 00:00:00
abstract:BACKGROUND:Malignant gastrointestinal neuroectodermal tumor (GNET) is an extremely rare entity that was first described by Zambrano et al. in 2003 as "Clear cell sarcoma-like tumor of the gastrointestinal tract". It shares some of the histological features of clear cell sarcoma (CCS) but lacks the immunohistochemical r...
journal_title:Diagnostic pathology
pub_type: 杂志文章,评审
doi:10.1186/s13000-017-0620-9
更新日期:2017-03-20 00:00:00
abstract::Complement C4d component deposition in kidney allograft biopsies is an established marker of antibody-mediated rejection. In the Banff 07 classification of renal allograft pathology, semi-quantitative evaluation of the proportion of C4d-positive peritubular capilaries (PTC) is used. We aimed to explore the potential o...
journal_title:Diagnostic pathology
pub_type: 杂志文章
doi:10.1186/1746-1596-6-S1-S5
更新日期:2011-03-30 00:00:00
abstract:BACKGROUND:Carbonic anhydrase IX is a member of α-carbonic anhydrases that is preferentially expressed in solid tumors. It enables bicarbonate transport across the plasma membrane, neutralizing intracellular pH and conferring to cancer cells a survival advantage in hypoxic/acidic microenvironments. Overexpression of ca...
journal_title:Diagnostic pathology
pub_type: 杂志文章
doi:10.1186/s13000-016-0495-1
更新日期:2016-05-25 00:00:00
abstract:BACKGROUND:Histologic grade is the most important predictor of the clinical outcome of non-muscle invasive (Ta, T1) papillary urothelial carcinoma (NMIPUCa), but its ambiguous criteria diminish its power to predict recurrence/progression for individual patients. We attempted to find an objective and reproducible histol...
journal_title:Diagnostic pathology
pub_type: 杂志文章,多中心研究
doi:10.1186/s13000-017-0639-y
更新日期:2017-07-24 00:00:00