JAK2 and Venous thrombosis: In the literature reported to date, the largest series relating JAK2 V617F mutation status to abdominal venous thrombosis showed that JAK2 V617F-associated BCS was predominantly a disease of young women, that it was associated with relatively low JAK2 V617F allele burdens, and that the majority of the patients did not have additional identified hypercoagulable risk factors, all features common to our patient [4].