Table 2

Ratio of observed (O) to expected (E) cases of new solid cancers among recipients of allogeneic HCT using high-dose Bu-Cy conditioning for AML in CR1 and CML in CP1

Time since transplantation
Total
< 1 y1-4 y5-9 y≥ 10 y
Number of patients 4318 3060 1982 774 4318 
Person-years at risk 3507 9902 6632 2000 22 041 
Second cancer site O O/E O O/E O O/E O O/E O O/E 95% CI 
    All sites 1.77 22 1.25 26 1.52* 1.21 66 1.40* 1.08-1.78 
    Lip 54.81 18.32 26.00 7.08-66.57 
    Tongue 12.41* 12.82* 9.25 2.52-23.70 
    Mouth 13.47* 15.04 7.32* 1.51-21.41 
    Hypopharynx 14.59 5.40 0.14-30.07 
    Esophagus 9.99* 18.64 10.50 3.85-22.85 
    Colon 1.04 4.34 1.18 0.24-3.45 
    Bronchus and lung 5.17 2.73 1.23 3.89 11 2.59 1.29-4.64 
    Melanoma, skin 0.89 2.02 2.31 1.38 0.38-3.53 
    Soft tissue 17.77 5.81 7.16 7.16* 1.48-20.93 
    Breast 1.43 1.23 1.00 0.46-1.89 
    Uterine cervix 5.69 1.80 2.29 2.32 0.48-6.77 
    Prostate 0.85 1.05 0.50 0.06-1.81 
    Testis 3.91 1.12 0.03-6.25 
    Kidney 6.87 0.73 0.02-4.09 
    Bladder 8.05 0.78 0.02-4.33 
    Brain and nervous system 4.64 5.62 3.76* 1.02-9.62 
    Adrenal gland 148.78* 23.17 0.59-129.07 
    Other, unspecified 17.74* 4.84 5.04 4.43 1.44-10.33 
Time since transplantation
Total
< 1 y1-4 y5-9 y≥ 10 y
Number of patients 4318 3060 1982 774 4318 
Person-years at risk 3507 9902 6632 2000 22 041 
Second cancer site O O/E O O/E O O/E O O/E O O/E 95% CI 
    All sites 1.77 22 1.25 26 1.52* 1.21 66 1.40* 1.08-1.78 
    Lip 54.81 18.32 26.00 7.08-66.57 
    Tongue 12.41* 12.82* 9.25 2.52-23.70 
    Mouth 13.47* 15.04 7.32* 1.51-21.41 
    Hypopharynx 14.59 5.40 0.14-30.07 
    Esophagus 9.99* 18.64 10.50 3.85-22.85 
    Colon 1.04 4.34 1.18 0.24-3.45 
    Bronchus and lung 5.17 2.73 1.23 3.89 11 2.59 1.29-4.64 
    Melanoma, skin 0.89 2.02 2.31 1.38 0.38-3.53 
    Soft tissue 17.77 5.81 7.16 7.16* 1.48-20.93 
    Breast 1.43 1.23 1.00 0.46-1.89 
    Uterine cervix 5.69 1.80 2.29 2.32 0.48-6.77 
    Prostate 0.85 1.05 0.50 0.06-1.81 
    Testis 3.91 1.12 0.03-6.25 
    Kidney 6.87 0.73 0.02-4.09 
    Bladder 8.05 0.78 0.02-4.33 
    Brain and nervous system 4.64 5.62 3.76* 1.02-9.62 
    Adrenal gland 148.78* 23.17 0.59-129.07 
    Other, unspecified 17.74* 4.84 5.04 4.43 1.44-10.33 
*

P ≤ .05.

P ≤ .01.

Includes metastatic adenocarcinoma, unknown primary site (N = 2), metastatic squamous cell carcinoma, unknown primary site (N = 2), and metastatic round cell tumor, unknown primary site (N = 1).

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