scholarly journals Personalized analysis of minimal residual cancer cells in peritoneal lavage fluid predicts peritoneal dissemination of gastric cancer

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Dongbing Zhao ◽  
Pinli Yue ◽  
Tongbo Wang ◽  
Pei Wang ◽  
Qianqian Song ◽  
...  
Keyword(s):  
Gastric Cancer ◽  
High Risk ◽  
Cancer Cells ◽  
Peritoneal Lavage ◽  
Peritoneal Dissemination ◽  
Lavage Fluid ◽  
Residual Cancer ◽  
Peritoneal Lavage Fluid ◽  
Minimal Residual Cancer ◽  
Minimal Residual

AbstractPeritoneal dissemination (PD) is a major type of gastric cancer (GC) recurrence and leads to rapid death. Current approaches cannot precisely determine which patients are at high risk of PD to provide early intervention. In this study, we developed a technology to detect minimal residual cancer cells in peritoneal lavage fluid (PLF) samples with a personalized assay profiling tumor-specific mutations. In a prospective cohort of 104 GC patients, the technology detected all the cases that developed PD with 100% sensitivity and 85% specificity. The minimal residual cancer cells in PLF were associated with a significantly increased risk of PD (HR = 145.13; 95% CI 20.20–18,435.79; p < 0.001), which was the strongest independent predictor over pathologic diagnosis and cytological diagnosis. In pathologically high-risk (pT4) patients, the PLF mutation profiling model exhibited a greater specificity of 91% and a positive predictive value of 88% while retaining a sensitivity of 100%. This approach may help in the postsurgical management of GC patients by detecting PD far before metastatic lesions grow to a significant size detectable by conventional methods such as MRI and CT scanning.

scholarly journals Personalized analysis of minimal residual cancer cells in peritoneal lavage fluid predicts peritoneal dissemination of gastric cancer

2021 ◽  
Author(s):  
Dongbin Zhao ◽  
Pinli Yue ◽  
Tongbo Wang ◽  
Pei Wang ◽  
Qianqian Song ◽  
...  
Keyword(s):  
Gastric Cancer ◽  
High Risk ◽  
Cancer Cells ◽  
Peritoneal Lavage ◽  
Peritoneal Dissemination ◽  
Lavage Fluid ◽  
Residual Cancer ◽  
Peritoneal Lavage Fluid ◽  
Minimal Residual Cancer ◽  
Minimal Residual

Abstract Peritoneal dissemination (PD) is the major type of gastric cancer (GC) recurrence and leads to rapid death. Current approach cannot precisely determine which patients are at high risk of PD. In this study, we developed a technology to detect minimal residual cancer cells in peritoneal lavage fluid (PLF) samples by parallel profiling tumor-specific mutations. We applied the technology to a prospective cohort of 110 GC patients. The technology showed ultra-high sensitivity by successfully detecting all the 27 cases that developed PD. The minimal residual cancer cells in PLF was associated with an increased risk of PD (HR = 145.13; 95%CI = 20.20-18435.79; p < 0.001) and significantly shorter overall survival. In pathologically high-risk (T4) patients, the PLF mutation profiling model exhibited even greater specificity of 91% and positive predictive value of 88%, while retaining sensitivity of 100%. PLF cancer cell fraction remained the strongest independent predictor of PD and recurrence-free survival over pathologic diagnosis and cytological diagnosis in GC patients. This approach may help in the postsurgical management of GC patients by detecting PD far before the metastatic lesions grow to significant size detectable by conventional methods such as MRI and CT scanning.

Independent Prognostication and Therapy Monitoring of Breast Cancer Patients by Dna/Rna Typing of Minimal Residual Cancer Cells

2000 ◽  
Vol 15 (1) ◽  
pp. 94-99 ◽  
Author(s):  
M. Giesing ◽  
F. Austrup ◽  
B. BÖckmann ◽  
G. Driesel ◽  
C. Eder ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cancer Cells ◽  
Cancer Patients ◽  
Molecular Characterization ◽  
Therapy Monitoring ◽  
Breast Cancer Patients ◽  
Residual Cancer ◽  
Minimal Residual Cancer ◽  
Minimal Residual

Clinical relevance, purification techniques and molecular characterization of minimal residual cancer cells (MRCC) is a controversial topic in the literature. An analytical concept including a novel isolation procedure and a panel of tests for DNA and RNA typing of MRCCs is described and clinically evaluated in this paper. The purification procedure exploiting the physical characteristics of MRCCs shows superior performance leading to >50% pure and viable tumor cells. Proof of the presence and purity of MRCCs in an isolated sample is given by multiparametric DNA typing (amplifications, mutations, losses of heterozygosity). On the basis of the proven presence of MRCCs tumor-relevant mRNAs can be adequately analyzed by normalized quantitative real-time RT-PCR. The molecular characterization of MRCCs isolated from blood of breast cancer patients could have a strong clinical impact on prognostication, drug targeting and therapy monitoring.

scholarly journals Perioperative Period is a Critical Gap for Minimal Residual Cancer Cells Progression and Therapy: Biological and Molecular Based Evidences

2018 ◽  
Vol 3 (2) ◽  
pp. 1-13
Author(s):  
Anwar Tawfik Amin ◽  
Norio Shiraishi ◽  
Seigo Kitano
Keyword(s):  
Immune System ◽  
Cancer Cells ◽  
Solid Tumors ◽  
Perioperative Period ◽  
Review Article ◽  
Residual Cancer ◽  
Critical Gap ◽  
Surrounding Environment ◽  
Minimal Residual Cancer ◽  
Minimal Residual

Although surgery is the main treatment for solid tumors, it could enhance the growth and metastasis of minimal residual cancer. In this review article we have discussed the perioperative changes in cancer cells and surrounding environment as well as the alterations in the immune system. Several trials are ongoing to develop new diagnostic and therapeutic options for minimal residual cancer after surgery.

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