Table 1.

Patient demographics and baseline characteristics

R/I patients*
(n = 33)
ND patients
(n = 25)
Median age (range), y 13 (2-17) 13 (10-16) 
Patients aged 1 to <12 y, n (%) 12 (36) 6 (24) 
Patients aged 12 to <18 y, n (%) 21 (64) 19 (76) 
Female, n (%) 12 (36) 12 (48) 
Median height SDS (range) −0.56 (−4.3 to 1.2) 0.06 (−0.9 to 1.7) 
Pubertal status   
 Prepubertal, n (%) 9 (27) 4 (16) 
 Pubertal, n (%) 23 (70) 21 (84) 
 Missing, n (%) 1 (3) 
Prior antineoplastic TKI therapies, n (%)   
 Imatinib 31 (93.9) NA 
 Dasatinib 2 (6.1) NA 
Intolerant of imatinib/dasatinib, n (%) 6 (18)/0 NA 
Resistant to imatinib/dasatinib, n (%) 28 (85)/2 (6) NA 
R/I patients*
(n = 33)
ND patients
(n = 25)
Median age (range), y 13 (2-17) 13 (10-16) 
Patients aged 1 to <12 y, n (%) 12 (36) 6 (24) 
Patients aged 12 to <18 y, n (%) 21 (64) 19 (76) 
Female, n (%) 12 (36) 12 (48) 
Median height SDS (range) −0.56 (−4.3 to 1.2) 0.06 (−0.9 to 1.7) 
Pubertal status   
 Prepubertal, n (%) 9 (27) 4 (16) 
 Pubertal, n (%) 23 (70) 21 (84) 
 Missing, n (%) 1 (3) 
Prior antineoplastic TKI therapies, n (%)   
 Imatinib 31 (93.9) NA 
 Dasatinib 2 (6.1) NA 
Intolerant of imatinib/dasatinib, n (%) 6 (18)/0 NA 
Resistant to imatinib/dasatinib, n (%) 28 (85)/2 (6) NA 

NA, not applicable; SDS, standard deviation score; TKI, tyrosine kinase inhibitor.

*

Patients were R/I to 1 prior TKI, either imatinib or dasatinib.

Three patients were both intolerant of and resistant to imatinib and are counted once as resistant and once as intolerant.

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