Table 1. Concordance of best responses.

	Overlap-MDS/MPN criteria
	Responders			Non-responders
	No. of patients	IWG-2006	Overlap-MDS/MPN	No. of patients	IWG-2006	Overlap-MDS/MPN
IWG-2006 criteria
Responders	45 (57%)			0
	10	CR	CR
	10	mCR-HI	OMR-CB
	6	mCR	OMR
	11	SD-HI	SD-CB
	1	CR	OMR-CB
	1	CR	OMR
	4	CR	SD-CB
	2	mCR	OMR-CB
Non-responders		11 (14%)			23 (29%)
	1	SD	OMR	10	SD	SD
	1	SD	PMR	4	PD	PD
	3	SD	SD-CB	9	PD	SD
	1	PD	OMR-CB
	4	PD	OMR
	1	PD	SD-CB

Abbreviations: CB, clinical benefit; CR, complete response; HI, haematologic improvement; mCR, marrow complete response; OMR, optimal marrow response; PD, progressive disease; PMR, partial marrow response; SD, stable disease.