Myeloid and Lymphoid Neoplasms with eosinophilia and Tyrosine Kinase gene fusions (MLN‐TK) is a World Health Organisation (WHO) and International Consensus Classification (ICC) disease category of rare haematological malignancies characterised by genomic rearrangements in genes encoding specific tyrosine kinases (TK). This evidence concerns the gene TKT and intrahepatic cholangiocarcinoma.