Skip to Content

Are you based in North America? If yes, switch to our North American website →

ROS1 Plus Breakapart

Applications
pathology
Catalogue Numbers
LPS 046-S (5 tests)
LPS 046 (10 tests)

The ROS1 (ROS proto-oncogene 1, receptor tyrosine kinase) gene at 6q22 is an ALK (anaplastic lymphoma receptor tyrosine kinase) gene paralogue which encodes a type I integral membrane protein with tyrosine kinase activity1.

ROS1 rearrangements define a molecular subset of non-small cell lung cancer (NSCLC) and are seen in approximately 2% of patients with NSCLC2. A number of partner genes have been identified, including SLC34A2, CD74 and SDC43. It has been shown that these ROS1 fusions activate the pSTAT3, PI3K/AKT/mTOR and SHP-2 phosphatase pathways4,5.

NSCLC patients with ROS1 rearrangements have been shown to respond to treatment with ALK/MET tyrosine kinase inhibitors, such as crizotinib6.

ROS1 rearrangements with the GOPC (golgi associated PDZ and coiled-coil motif containing) gene fusion partner were originally reported in glioblastoma, but have now also been detected on cholangiocarcinoma, ovarian cancer and NSCLC patient samples7-9.

The ROS1 Plus design covers the ROS1 region and the region deleted in ROS1-GOPC fusions.

In our hands, Cytocell FISH probes, including the ROS1 Proximal and ROS1 Distal probes, have proven to be of the highest quality with bright, easy to interpret signals, thus providing confidence in our results. Cytocell’s customer support is outstanding, as their staff are extremely knowledgeable and truly care about their customers and their customers’ needs. Jennie Thurston, Director of Cytogenetics at Carolinas Pathology Group

References

1. Matsushime H et al., Mol Cell Biol 1986;6:3000-4


2. Bergethon K et al., J Clin Oncol 2012;30(8):863-70

3. Davies KD et al., Cancer Res 2012;72(8):1538-7445

4. Birchmeier C et al., Proc Natl Acad Sci 1987;84:9270-9274


5. Ou SH et al., Expert Rev Anticancer Ther 2012;12(4):447-56


6. Shaw, A.T. et al., 2014. 371(21), pp.1963–71.

7. Gu TL et al., PLoS One 2011;6: e15640

8. Charest A et al., Genes Chromosomes Cancer 2003;37:58-71

9. Davies KD & Doebele RC, 2013. Clinical cancer 19(15), 4040–4045

Microscope Images

ROS1 Plus Breakapart magnified
Area of Interest*
Lung Cancer

Disclaimer

This product is intended to be used on formalin-fixed paraffin-embedded (FFPE) tissues.

*Disease information supported by the literature and is not a reflection of the intended purpose of this product.