Table 5

Response by baseline BCR-ABL mutation analysis of patients with imatinib-resistant and -intolerant CML-AP at 8 months' follow-up

Total*Patients with MaHRPatients with MCyR
No mutation, no. (%) 40 (40) 22/40 (55) 15/40 (38) 
Any mutation, no. (%) 60 (60) 44/60 (73) 18/60 (30) 
P-Loop, n (%) 30 (30) 22/30 (73) 7/30 (23) 
A-Loop, n (%) 7 (7) 6/7 (86) 4/7 (57) 
Other regions, no. (%) 24 (24) 17/24 (71) 8/24 (33) 
Mutations documented in at least 2 patients, no. patients    
    M244V 
    L248V 
    G250E 
    Y253H 
    E255K 
    E255V 
    T315I 
    F317L 
    M351T 
    E355G 
    F359C 
    F359V 
    V379I 
    A397P 
    E459K 
Total*Patients with MaHRPatients with MCyR
No mutation, no. (%) 40 (40) 22/40 (55) 15/40 (38) 
Any mutation, no. (%) 60 (60) 44/60 (73) 18/60 (30) 
P-Loop, n (%) 30 (30) 22/30 (73) 7/30 (23) 
A-Loop, n (%) 7 (7) 6/7 (86) 4/7 (57) 
Other regions, no. (%) 24 (24) 17/24 (71) 8/24 (33) 
Mutations documented in at least 2 patients, no. patients    
    M244V 
    L248V 
    G250E 
    Y253H 
    E255K 
    E255V 
    T315I 
    F317L 
    M351T 
    E355G 
    F359C 
    F359V 
    V379I 
    A397P 
    E459K 

MaHR indicates major hematologic response; MCyR, major cytogenetic response.

*

n = 100. Seven of the 107 treated patients had no mutational analysis performed at baseline.

P-loop mutations are those in location 244 through 255.

Activation loop mutations are those in location 379 through 398.

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