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Serum c-kit Protein Detection as a Reliable Biomarker for the Diagnosis of Gastrointestinal Stromal Tumors: A Case-Control Study | OMICS International | Abstract

Journal of Molecular Biomarkers & Diagnosis
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Research Article

Serum c-kit Protein Detection as a Reliable Biomarker for the Diagnosis of Gastrointestinal Stromal Tumors: A Case-Control Study

Kakavetsi V1*, Apostolopoulos P1, Karameris A2, Dimakis A3, Tsimbouris P1, Zalonis A1, Karamountzos A1, Adamopoulos A4, Vafiadis I5, Ladas S5 and Alexandrakis G1

1Gastroenterology Department, Army Veterans Hospital, Athens, Greece

2Pathology Department, Army Veterans Hospital, Athens, Greece

3Radiology Department, ‘Thriasio’ General Hospital, Elefsina, Greece

4Gastroenterology Department, ‘Sotiria’ General Hospital of Thorax Diseases, Athens, Greece

5Department of Propedeutic Medicine, ‘Laiko’ General Hospital, Athens, Greece

*Corresponding Author:
Kakavetsi Vasiliki
Gastroenterologist, Gastroenterology Department
Army Veterans Hospital
Monis Petraki 10-12 Street, Postal code
11521, Athens, Attiki, Greece
Tel: 00302107288107, 00306974437875
E-mail: [email protected]

Received Date: March 07, 2014; Accepted Date: April 09, 2014; Published Date: April 19, 2014

Citation: Kakavetsi V, Apostolopoulos P, Karameris A, Dimakis A, Tsimbouris P, et al. (2014) Serum c-kit Protein Detection as a Reliable Biomarker for the Diagnosis of Gastrointestinal Stromal Tumors: A Case-Control Study. J Mol Biomark Diagn S6:001. doi:10.4172/2155-9929.S6-001

Copyright: © 2014 Kakavetsi V, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


Background: In the last decade, the diagnostic approach of Gastrointestinal Stromal Tumors (GIST) has drastically changed with the utilization of tissue-specific biomarkers, such as c-Kit. However, a serum biomarker aiding in differential GIST diagnosis prior to surgery would provide added benefit in the daily clinical practice. Thus, the aim of the study was to investigate whether detection of c-Kit protein in the serum could be used as a reliable diagnostic biomarker.

Methods: Twenty-seven patients with histologically confirmed GIST (16 men; age 41-80 years), 27 healthy controls (14 men; age 45-76 years) and 24 patients with submucosal tumors other than GIST (10 men; age 25-85 years) were enrolled in the study. Detection of serum c-Kit protein in blood samples of all patients prior to any treatment-related intervention and of healthy participants was accomplished using flow cytometry. The sensitivity and specificity of the assay were estimated.

Results: Of the 27 patients with GIST, 25 were serum c-Kit positive. In the control group of 27 healthy participants, all except one were serum c-Kit negative, while among the 24 patients with tumors either than GIST, 22 were serum c-Kit negative and 2 were positive. Based on these results, the sensitivity of the assay was 92.6%, while the specificity was 96.3% when compared with the healthy volunteers and 91.7% in comparison with the non-GIST group.

Conclusion: c-Kit protein detection with flow cytometry could represent a reliable sensitive and specific serum bioassay for differential GIST diagnosis.

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