Table 1.

Characteristics of the study population

Study cohort CML patients
N = 220 n (%)*
Demographic information  
Age (y) 39.8 ± 9.4 (18-61) 
Age groups (no. patients)  
 18-30 38 (17%)  
 31-40 78 (36%) 
 41-50 74 (34%)  
 > 50 30 (14%)  
Sex (no. patients)  
 Male 117 (53%)  
 Female 103 (47%) 
Race/Ethnicity (no. patients)  
 White 196 (89%) 
 Nonwhite 24 (11%)  
Birthplace (no. patients)  
 United States 204 (93%)  
 Non-United States 16 (7%)  
Weight (kg) 78.0 ± 15.7 (41.2-132.1) 
Height (cm) 171.2 ± 10.0 (123.4-194.5) 
Smoking status (no. patients)  
 Never 113 (51%)  
 Current 9 (4%) 
 Former 66 (30%)  
 No information 32 (15%) 
Transplant-related characteristics  
Conditioning regimen (no. patients)  
 Cy/TBI 112 (51%)  
 Bu/Cy 108 (49%) 
Donor type (no. patients)  
 Unrelated 112 (51%) 
 Related 108 (49%)  
  HLA-matched 101 (46%) 
  HLA-mismatched 6 (3%)  
  Unknown 1 (0.5%) 
Previous interferon treatment (no. patients)  
 Yes 98 (45%)  
 No 122 (56%) 
Survival status (no. patients)  
 Alive 170 (77%) 
 Dead 50 (23%)  
Oral mucositis index  
 OMI d 6-12 20.1 ± 12.2  (0.0-64.0) 
 OMI d 1-18 17.4 ± 9.8 (1.3-54.4) 
Granulocyte recovery  
 Median days to reach 100/μL 15 (6-38) 
 Median days to reach 500/μL 21 (11-51) 
Platelet recovery  
 Median days to reach 10 000/μL 18 (9-85) 
 Median days to reach 20 000/μL 18 (9-85) 
Bilirubin levels  
 Median level d 1-18 1.42 (0.30-6.64) 
 Highest level d 1-18 2.30 (0.50-17.5) 
 Difference between highest and baseline  level, d 1-18 1.48 (0-17.1) 
MTHFR genotype (no. patients)  
 CC (wild type) 92 (42%)  
 CT (heterozygous) 92 (42%)  
 TT (homozygous variant) 36 (16%) 
Study cohort CML patients
N = 220 n (%)*
Demographic information  
Age (y) 39.8 ± 9.4 (18-61) 
Age groups (no. patients)  
 18-30 38 (17%)  
 31-40 78 (36%) 
 41-50 74 (34%)  
 > 50 30 (14%)  
Sex (no. patients)  
 Male 117 (53%)  
 Female 103 (47%) 
Race/Ethnicity (no. patients)  
 White 196 (89%) 
 Nonwhite 24 (11%)  
Birthplace (no. patients)  
 United States 204 (93%)  
 Non-United States 16 (7%)  
Weight (kg) 78.0 ± 15.7 (41.2-132.1) 
Height (cm) 171.2 ± 10.0 (123.4-194.5) 
Smoking status (no. patients)  
 Never 113 (51%)  
 Current 9 (4%) 
 Former 66 (30%)  
 No information 32 (15%) 
Transplant-related characteristics  
Conditioning regimen (no. patients)  
 Cy/TBI 112 (51%)  
 Bu/Cy 108 (49%) 
Donor type (no. patients)  
 Unrelated 112 (51%) 
 Related 108 (49%)  
  HLA-matched 101 (46%) 
  HLA-mismatched 6 (3%)  
  Unknown 1 (0.5%) 
Previous interferon treatment (no. patients)  
 Yes 98 (45%)  
 No 122 (56%) 
Survival status (no. patients)  
 Alive 170 (77%) 
 Dead 50 (23%)  
Oral mucositis index  
 OMI d 6-12 20.1 ± 12.2  (0.0-64.0) 
 OMI d 1-18 17.4 ± 9.8 (1.3-54.4) 
Granulocyte recovery  
 Median days to reach 100/μL 15 (6-38) 
 Median days to reach 500/μL 21 (11-51) 
Platelet recovery  
 Median days to reach 10 000/μL 18 (9-85) 
 Median days to reach 20 000/μL 18 (9-85) 
Bilirubin levels  
 Median level d 1-18 1.42 (0.30-6.64) 
 Highest level d 1-18 2.30 (0.50-17.5) 
 Difference between highest and baseline  level, d 1-18 1.48 (0-17.1) 
MTHFR genotype (no. patients)  
 CC (wild type) 92 (42%)  
 CT (heterozygous) 92 (42%)  
 TT (homozygous variant) 36 (16%) 

CML indicates chronic myelogenous leukemia; Cy, cyclophosphamide; Bu, busulfan; OMI, oral mucositis index; TBI, total body irradiation; MTHFR, 5,10-methylenetetrahydrofolate reductase.

*

Because of rounding not all percentages total 100.

Mean ± SD (range).

Median (range).

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