Cytokeratin 7 is a Predictive Marker for Survival in Patients with Esophageal Squamous Cell Carcinoma.
Summary of "Cytokeratin 7 is a Predictive Marker for Survival in Patients with Esophageal Squamous Cell Carcinoma."
Patients diagnosed with stage II and III esophageal squamous cell carcinoma (ESCC) have variable prognosis. This group would benefit greatly from the discovery of prognostic markers that are capable of identifying individuals for whom adjuvant treatment would be advantageous. The aim of this study was to investigate the impact of immunohistochemically detected cytokeratin 7 (CK7) expression on disease-free survival, overall survival (OS), or therapeutic outcome in patients with ESCC.
Immunohistochemical analysis of CK7 was performed on 225 surgically resected specimens of stage 0-III ESCC.
In total, 20 (9%) of 225 ESCC cases were positive for CK7. In stage 0-III ESCC patients, CK7 expression was statistically significantly associated with OS, independent of clinical covariates, including tumor, node, metastasis system stage. In stage II and III ESCC patients (n = 124), CK7 expression was significantly associated with poorer OS (P = 0.0377). Furthermore, in stage II and III ESCC patients who did not receive adjuvant chemotherapy (n = 73), CK7 expression was significantly associated with poorer OS (P = 0.0003). CK7 expression was not associated with therapeutic outcome in patients with stage II and III ESCC who received adjuvant chemotherapy. In patients with CK7-positive ESCC (n = 16), receipt of adjuvant chemotherapy tended to be beneficial for patients with stage II and III ESCC (P = 0.0654).
Immunohistochemical analysis of CK7 will help to identify high-risk patients.
Department of Molecular Pathology, Hiroshima University Graduate School of Biomedical Sciences, Hiroshima, Japan.
This article was published in the following journal.
Name: Annals of surgical oncology
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/22203179
- DOI: http://dx.doi.org/10.1245/s10434-011-2175-4
Medical and Biotech [MESH] Definitions
Predictive Value Of Tests
In screening and diagnostic tests, the probability that a person with a positive test is a true positive (i.e., has the disease), is referred to as the predictive value of a positive test; whereas, the predictive value of a negative test is the probability that the person with a negative test does not have the disease. Predictive value is related to the sensitivity and specificity of the test.
Neoplasms, Squamous Cell
Neoplasms composed of squamous cells of the epithelium. The concept does not refer to neoplasms located in tissue composed of squamous elements.
A pathological condition characterized by the presence of a number of ESOPHAGEAL DIVERTICULA in the ESOPHAGUS.
The survival of a graft in a host, the factors responsible for the survival and the changes occurring within the graft during growth in the host.
Esophageal Motility Disorders
Disorders affecting the motor function of the UPPER ESOPHAGEAL SPHINCTER; LOWER ESOPHAGEAL SPHINCTER; the ESOPHAGUS body, or a combination of these parts. The failure of the sphincters to maintain a tonic pressure may result in gastric reflux of food and acid into the esophagus (GASTROESOPHAGEAL REFLUX). Other disorders include hypermotility (spastic disorders) and markedly increased amplitude in contraction (nutcracker esophagus).
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