RAF gene fusions
The present disclosure relates to compositions and methods for cancer diagnosis, research and therapy, including but not limited to, cancer markers. In particular, the present disclosure relates to RAF gene fusions as diagnostic markers and clinical targets for cancer.
1. A composition comprising at least one of the following:
(a) an oligonucleotide probe that hybridizes to a junction of a chimeric genomic DNA or a chimeric mRNA, wherein a 5′ portion of the chimeric genomic DNA or the chimeric mRNA is from an AGTRAP gene and a 3′ portion of the chimeric genomic DNA or the chimeric mRNA is from a RAF family member gene;
(b) an antibody specific for a fusion protein having an amino-terminal portion encoded by an angiotensin II, type I receptor-associated protein (AGTRAP) gene and a carboxy-terminal portion encoded by a kinase domain of a RAF family member gene.
2. The composition of claim 1 wherein the RAF family member gene is BRAF.
3. The composition of claim 1 wherein the carboxy-terminal portion of the fusion protein comprises a wild-type sequence of a RAF family member gene.
4. The composition of claim 1 further comprising the fusion protein having an amino-terminal portion encoded by an AGTRAP gene and a carboxy-terminal portion encoded by a kinase domain of a RAF family member gene.
5. The composition of claim 1 wherein the fusion protein having an amino-terminal portion encoded by an AGTRAP gene and a carboxy-terminal portion encoded by a RAF family member gene differs from the native AGTRAP protein or the native RAF family member gene in amino acid sequence; post-translational processing; and/or secondary, tertiary, or quaternary structure.
6. The composition of claim 1 wherein the antibody is labeled.
7. The composition of claim 1 wherein the antibody is polyclonal, monoclonal, chimeric, humanized, single chain, a Fv fragment, or a Fab fragment.
8. The composition of claim 1 wherein the antibody is linked to a bead.
9. The composition of claim 1 wherein the fusion protein comprises exon 5 of AGTRAP.
10. The composition of claim 1 wherein the fusion protein comprises exon 8 of BRAF.
11. The composition of claim 1 wherein the fusion protein comprises exon 8 of BRAF fused to exon 5 of AGTRAP.