Whilst little is known of thephysiological function of ALK, it is rapidly gaining recognition as an importantoncogene in a diverse range of tumor types, including Anaplastic Large Cell Lymphoma(ALCL), melanoma, breast cancer, non-small cell lung carcinoma, neuroblastoma,inflammatory myofibroblastic tumors and esophageal squamous cell carcinoma althoughits involvement in some of these cancers is still somewhat controversial [1], [4], [5], [6], [7], [8], [9], [10], [11], [12], [13], [14], [15], [16]. The gene discussed is ALK; the disease is anaplastic large cell lymphoma.