Anaplastic lymphoma kinase (ALK) gene translocations have been implicated as pathogenic events in a proportion of PTC (0–9%), PDTC (0–4%), and ATC (0–4%) [7,17,18,19], with some reports indicating a greater prevalence in dedifferentiated thyroid cancers [17]. The gene discussed is ALK; the disease is thyroid gland carcinoma.