SRSF2 and myelodysplastic syndrome: Additional copy number changes detected by SNPa but not visible by karyotyping included, in Case no. 2, deletion of a 3.9 Mb region on distal 17q within the q25.1-q25.3 interval that houses SRSF2 known to harbour mutations with poor prognostic impact in PMF and myelodysplastic syndrome (MDS) [16].