Table 3 Central bone marrow... | American Society of Hematology

Table 3

Central bone marrow histopathology and JAK2V617F analysis in 235 study patients

	N	%	JAK2 positive (n)	JAK2 allele burden Median (%)	JAK2 negative (n)
ET	194	82.5	79	8.7	73
PMF-0 (fiber grade 0)	16	6.8	10	11.7**	3
PMF-1 (fiber grade 1)	3	1.3	1	—	0
PV (PV-like pattern)	16	6.8	8	10.4	5
–Unclassifiable	6	2.6	9*	—	11*

	N	%	JAK2 positive (n)	JAK2 allele burden Median (%)	JAK2 negative (n)
ET	194	82.5	79	8.7	73
PMF-0 (fiber grade 0)	16	6.8	10	11.7**	3
PMF-1 (fiber grade 1)	3	1.3	1	—	0
PV (PV-like pattern)	16	6.8	8	10.4	5
–Unclassifiable	6	2.6	9*	—	11*

JAK2V617F analysis was performed in more patients than the bone marrow reevaluation.

Value denotes pooled PMF-0 and PMF-1.