Table 1.

Baseline characteristics

CharacteristicIvosidenib 500 mg + chemotherapy, n = 60Enasidenib 100 mg + chemotherapy, n = 93
Age, median (range), y 62.5 (24-76) 63.0 (27-77) 
Age category, n (%), y   
 <60 21 (35) 34 (37) 
 ≥60 39 (65) 59 (63) 
Men, n (%) 30 (50) 52 (56) 
Type of AML, n (%)   
 De novo 42 (70) 58 (62) 
 Secondary 18 (30) 35 (38) 
Prior hypomethylating agent, n (%)* 4 (22) 17 (49) 
IDH1 mutation type, n (%)   
 R132 58 (97) 2 (2) 
 Other or unknown 2 (3) 1 (1) 
IDH2 mutation type, n (%)   
 R140 1 (2) 66 (71) 
 R172 1 (2) 25 (27) 
 Other or unknown 2 (2) 
Cytogenetic risk status by investigator, n (%)   
 Favorable 2 (2) 
 Intermediate 42 (70) 64 (69) 
 Poor 13 (22) 20 (22) 
 Unknown 5 (8) 7 (8) 
CharacteristicIvosidenib 500 mg + chemotherapy, n = 60Enasidenib 100 mg + chemotherapy, n = 93
Age, median (range), y 62.5 (24-76) 63.0 (27-77) 
Age category, n (%), y   
 <60 21 (35) 34 (37) 
 ≥60 39 (65) 59 (63) 
Men, n (%) 30 (50) 52 (56) 
Type of AML, n (%)   
 De novo 42 (70) 58 (62) 
 Secondary 18 (30) 35 (38) 
Prior hypomethylating agent, n (%)* 4 (22) 17 (49) 
IDH1 mutation type, n (%)   
 R132 58 (97) 2 (2) 
 Other or unknown 2 (3) 1 (1) 
IDH2 mutation type, n (%)   
 R140 1 (2) 66 (71) 
 R172 1 (2) 25 (27) 
 Other or unknown 2 (2) 
Cytogenetic risk status by investigator, n (%)   
 Favorable 2 (2) 
 Intermediate 42 (70) 64 (69) 
 Poor 13 (22) 20 (22) 
 Unknown 5 (8) 7 (8) 
*

For patients with secondary AML only.

Patients with dual IDH1 and IDH2 mutations were assigned to ivosidenib or enasidenib on the basis of the IDH mutation with the higher allele burden.

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