Table 1.

Genetic JMML subtypes

Genetic subtypePatient cohort
Japanese (N = 135), %*North American (N = 98), %†EWOG‐MDS (N = 175), %‡
NF1 5 13 10 
PTPN11 36 32 41 
KRAS 17 14 14 
NRAS 15 17 16 
CBL 17 11 12 
Negative 9 12 7 
Genetic subtypePatient cohort
Japanese (N = 135), %*North American (N = 98), %†EWOG‐MDS (N = 175), %‡
NF1 5 13 10 
PTPN11 36 32 41 
KRAS 17 14 14 
NRAS 15 17 16 
CBL 17 11 12 
Negative 9 12 7 

Patients with NS-associated myeloproliferative disorder had been excluded.

*

Adjusted from Murakami et al.14 

†

Adjusted from Stieglitz et al.13 

‡

Patients with JMML consecutively registered to the European Working Group of MDS in Childhood (EWOG‐MDS) since 1 January 2010.

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