To evaluate the role of L1 as a peripheral marker, we here examined L1 levels in serum of GIST patients and healthy controls.
In order to explain the reduced levels of these miRNAs in GIST, we checked whether chromosome 13 loss, which is frequently observed in advanced GIST, is correlated to lowered expression of miR-17 and miR-20a of which the genes are located on 13-q31.3 13-q31.3
We further investigated the functional role of miR-125a-5p miR-125a-5p miR-125a-5pts in imandnitsresistance of GIST cells and assessed the target potentialxpression levels in GIStargetscal specinens.
We also measured the expression levels of these candidate targets in 27 GIST samples using western blotting analysis.
Median levels of soluble L1 were significantly higher (p < 0.001; Mann-Whitney U test) in sera of GIST patients compared to healthy individuals.
However, it remains unknown whether improvements in understanding and management of GIST patients have resulted in relevant patient benefits on a population-based level.
Hence, the wild-type GISTs with high IGF1R expression exhibited higher IGF1 and INSR levels, while the wild-type IGF1Rlow GISTs expressed higher levels of IGF2.
Clinico-pathological characterization of GIST used for Cleveland Clinic GIST TMA is summarized in Table 2. SuperBiochips GIST TMA was purchased from Super BioChips laboratories, (#ADD1, Seoul, South Korea).
The prognosis of GIST patients differs according to the tumor site; I-GIST show more aggressive behavior than S-GIST.
Thus, the diagnosis of GIST is reliable.
