A method of determining diagnosis or prognosis for a cancer comprising detecting the presence or absence of at least one epigenetic chromosome interaction on a chromosome which relates to one or more of the following genes: FIP1L1, PDGFRA, Flt3, ABL1, FGFR1, cKIT and Bruton tyrosine kinase, wherein said chromosome interaction is selected from an interaction defined by: (i) any of the following probes: (a) 5'-CTTATAGCCTGTCTCTCTTGCTGATCGAGGTTGCAACGAGCTGAGATTGC-3' (b) 5'-GGGCCAAGTGTGACTCTCAGGTTTTCGACCTGCCTCAGCCTCCCAAAGT-3' (c) 5'-TTGAGGACAAGGACCTCGAGATACTGCCGAGAAATCC-3' (d) 5'-TCACCCAGAATAAGGCTTCTCGATTCTAAGTTCTACAAGA-3' (e) 5'-AAACCCCAGCAGCCCCTGCCCAAGTCGAGGGAGCAGCTCCCCACCCAGCCC-3' (f) 5'-TATGCTTGTGGGACATCGACAAAAGCAATTATGC-3' (g) 5'-CCTCGGCGACAGAGTGAGACTCTGTCGATCTCATTCTTTGGTTTCTGAAC-3' (h) 5'-ACTTTACTGTGTCCCCATCACGTGTCGACAGAGTCTCACTCTGTCGCCGA-3' (i) 5'-GAGTTCAGAAACCAAAGAATGAGATCGAGTGATTGCTAGGTGATGGACCT-3' (j) 5'-GCTGGAGGATTGCTTGAGCTTGGGAGGTCGATCTCATTCTTTGGTTTCTGAAC-3' (k) 5'-TCAGCAAGGACCTCGAAAAGATAAAACA-3' (l) 5'- ATTTATTCGAAAACCCTGGGACCC-3' or (ii) any one of the following primer pairs which amplify the ligated product made in the process of detecting the chromosome interaction: (m) TTCCACGTGGCCTACCACAG and CAGCTGCGAGGTTTTCTTTT (n) TGGGAGTGGGTGGAGTGAGA and ACGGACTGACATCTTTAGCTTCC (o) GCAGCTGCGAGGTTTTCTTT and GCCATGTGGCTTGGGCATAC (p) AGTACTTCCTCTCCCCTCCCA and GCAGCTGCGAGGTTTTCTTTT (q) CCTCTCCCACACAAACCTGCTA and ACATGGAGCACACATACAAGCTAC (r) AAATGATGAGGCACGGGTGAA and CATGGAGCACACATACAAGCTAC, wherein detecting of the chromosome interaction defined by any of probes (a) to (e) and (g) to (j) is to determine diagnosis of cancer, and wherein detecting of the chromosome interactions defined by any of probes (f), (k) and (l) or any of the primer pairs defined by (m) to (r) is to determine prognosis of cancer. (i) any of the following probes: (a) 5'-CTTATAGCCTGTCTCTCTTGCTGATCGAGGTTGCAACGAGCTGAGATTGC-3' (b) 5'-GGGCCAAGTGTGACTCTCAGGTTTTCGACCTGCCTCAGCCTCCCAAAGT-3' (c) 5'-TTGAGGACAAGGACCTCGAGATACTGCCGAGAAATCC-3' (d) 5'-TCACCCAGAATAAGGCTTCTCGATTCTAAGTTCTACAAGA-3' (e) 5'-AAACCCCAGCAGCCCCTGCCCAAGTCGAGGGAGCAGCTCCCCACCCAGCCC-3' (f) 5'-TATGCTTGTGGGACATCGACAAAAGCAATTATGC-3' (g) 5'-CCTCGGCGACAGAGTGAGACTCTGTCGATCTCATTCTTTGGTTTCTGAAC-3' (h) 5'-ACTTTACTGTGTCCCCATCACGTGTCGACAGAGTCTCACTCTGTCGCCGA-3' (i) 5'-GAGTTCAGAAACCAAAGAATGAGATCGAGTGATTGCTAGGTGATGGACCT-3' (j) 5'-GCTGGAGGATTGCTTGAGCTTGGGAGGTCGATCTCATTCTTTGGTTTCTGAAC-3' (k) 5'-TCAGCAAGGACCTCGAAAAGATAAAACA-3' (l) 5'- ATTTATTCGAAAACCCTGGGACCC-3' or (a) 5'-CTTATAGCCTGTCTCTCTTGCTGATCGAGGTTGCAACGAGCTGAGATTGC-3' (b) 5'-GGGCCAAGTGTGACTCTCAGGTTTTCGACCTGCCTCAGCCTCCCAAAGT-3' (c) 5'-TTGAGGACAAGGACCTCGAGATACTGCCGAGAAATCC-3' (d) 5'-TCACCCAGAATAAGGCTTCTCGATTCTAAGTTCTACAAGA-3' (e) 5'-AAACCCCAGCAGCCCCTGCCCAAGTCGAGGGAGCAGCTCCCCACCCAGCCC-3' (f) 5'-TATGCTTGTGGGACATCGACAAAAGCAATTATGC-3' (g) 5'-CCTCGGCGACAGAGTGAGACTCTGTCGATCTCATTCTTTGGTTTCTGAAC-3' (h) 5'-ACTTTACTGTGTCCCCATCACGTGTCGACAGAGTCTCACTCTGTCGCCGA-3' (i) 5'-GAGTTCAGAAACCAAAGAATGAGATCGAGTGATTGCTAGGTGATGGACCT-3' (j) 5'-GCTGGAGGATTGCTTGAGCTTGGGAGGTCGATCTCATTCTTTGGTTTCTGAAC-3' (k) 5'-TCAGCAAGGACCTCGAAAAGATAAAACA-3' (l) 5'- ATTTATTCGAAAACCCTGGGACCC-3' or (ii) any one of the following primer pairs which amplify the ligated product made in the process of detecting the chromosome interaction: (m) TTCCACGTGGCCTACCACAG and CAGCTGCGAGGTTTTCTTTT (n) TGGGAGTGGGTGGAGTGAGA and ACGGACTGACATCTTTAGCTTCC (o) GCAGCTGCGAGGTTTTCTTT and GCCATGTGGCTTGGGCATAC (p) AGTACTTCCTCTCCCCTCCCA and GCAGCTGCGAGGTTTTCTTTT (q) CCTCTCCCACACAAACCTGCTA and ACATGGAGCACACATACAAGCTAC (r) AAATGATGAGGCACGGGTGAA and CATGGAGCACACATACAAGCTAC, wherein detecting of the chromosome interaction defined by any of probes (a) to (e) and (g) to (j) is to determine diagnosis of cancer, and wherein detecting of the chromosome interactions defined by any of probes (f), (k) and (l) or any of the primer pairs defined by (m) to (r) is to determine prognosis of cancer. (m) TTCCACGTGGCCTACCACAG and CAGCTGCGAGGTTTTCTTTT (n) TGGGAGTGGGTGGAGTGAGA and ACGGACTGACATCTTTAGCTTCC (o) GCAGCTGCGAGGTTTTCTTT and GCCATGTGGCTTGGGCATAC (p) AGTACTTCCTCTCCCCTCCCA and GCAGCTGCGAGGTTTTCTTTT (q) CCTCTCCCACACAAACCTGCTA and ACATGGAGCACACATACAAGCTAC (r) AAATGATGAGGCACGGGTGAA and CATGGAGCACACATACAAGCTAC, wherein detecting of the chromosome interaction defined by any of probes (a) to (e) and (g) to (j) is to determine diagnosis of cancer, and wherein detecting of the chromosome interactions defined by any of probes (f), (k) and (l) or any of the primer pairs defined by (m) to (r) is to determine prognosis of cancer.