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Table 1 Longitudinal cytogenetic and molecular studies in our patient with rapidly evolving PMF

From: MYB deregulation from a EWSR1-MYB fusion at leukemic evolution of a JAK2 V617F positive primary myelofibrosis

 

PMF diagnosis

Leukemic transformation

Post-consolidation therapy

*Monitoring +3 months

*Monitoring +14 months

Karyotype

46,XY [20]

46,XY,ins(6;22)(q23q11q12),del(22)(q11) [20]

46,XY [20]

46,XY [20]

46,XY [20]

JAK2 V617F allele burden

60 %

63 %

70 %

n.d.

36 %

TET2 c.2732_2733insC, p.A912Cfs*12; .c.3781C>T, p.R1261C

yes

yes

yes

n.d.

n.d.

SRSF2 c.284C>A p.P95H

yes

yes

yes

n.d.

n.d.

SNPa

cnLOH 12q11-12q24.33

cnLOH: 12q11-12q24.33

n.d.

n.d.

n.d.

LOSS: 22q11.1

I-FISH: EWSR1-MYB

negative

positive

negative

negative

negative

RT-PCR: EWSR1-MYB

negative

positive

negative

n.d.

n.d.

  1. n.d. not done
  2. *from leukemia transformation