Clinicopathological and molecular characteristics of synchronous gastric adenocarcinoma and gastrointestinal stromal tumors
| Autor: | Fa-Long Cao, Siqing Ma, Chen Meng, Yichun Wang, Jian-Guo Xin, Shao-Hua Peng, Guirong Wang, Hong-Ling Gao, Sara Javidiparsijani, Shukun Zhang, Li-Jun Lin, Meng-Lan Zhang, Junming Luo |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Male
Mutation rate Gastrointestinal Stromal Tumors CD34 lcsh:Medicine Adenocarcinoma Article Neoplasms Multiple Primary 03 medical and health sciences Exon 0302 clinical medicine Stomach Neoplasms medicine Humans Stromal tumor lcsh:Science neoplasms Aged Multidisciplinary biology GiST Base Sequence CD117 lcsh:R DNA Neoplasm Oncogenes Middle Aged medicine.disease digestive system diseases 3. Good health 030220 oncology & carcinogenesis Mutation biology.protein Cancer research Immunohistochemistry 030211 gastroenterology & hepatology lcsh:Q Female |
| Zdroj: | Scientific Reports Scientific Reports, Vol 7, Iss 1, Pp 1-7 (2017) |
| ISSN: | 2045-2322 |
| Popis: | Synchronous gastric tumors that consist of both gastrointestinal stromal tumor (GIST) and adenocarcinoma are rare. We studied the clinicopathological and molecular characteristics of six cases containing both gastric adenocarcinoma and GIST. By means of immunohistochemical analysis, all GIST cells expressed CD117, CD34 and Dog1 in all six synchronous gastric adenocarcinomas with GIST, and in GIST alone. Sequencing analysis demonstrated that exon 11 c-kit mutations were present in two of six synchronous tumors and four of five GISTs. One of the two exon 11 c-kit mutations in synchronous adenocarcinomas with GISTs was an uncommon mutation of CTT > CCA at amino acid 576, and the other was a GTT deletion at amino acid 560. The mutation was a homozygous A > G mutation in exon 12 (amino acid 567) of PDGFR-α. We concluded that the exon 11 mutations were the most important in both cases of synchronous gastric adenocarcinoma with GIST and GIST alone. The mutation rate was higher in GIST alone than in synchronous adenocarcinoma with GIST. |
| Databáze: | OpenAIRE |
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