Table I.

Demographics of 20 lung transplant recipients

Clinical features	BOS (n=10)	Stable (n=10)
Mean recipient age at transplant, years	49±12	54±8
Male sex	5(50%)	5(50%)
Race
White	10(100)	9(90)
African-American	0(0)	1(10)
End-stage lung disease
Cystic fibrosis	5(50)	1(10)
Idiopathic pulmonary fibrosis	3(30)	0(0)
Chronic obstructive pulmonary disease	1(10)	7(70)
Other	1(10)	2(20)
HLA mismatch
A	1.5±0.5	1.4±0.5
B	1.8±0.4	1.6±0.5
DR	1.9±0.3	1.3±0.9
Bilateral LTx	10(100)	10(100)
Mean time from LTx to sampling, months	17.3±8.2	24.4±10.7
Mean time from LTx to BOS onset, months	16.2±8.9	N/A

^*Values presented as n (%), unless otherwise noted.

Abbreviations: BOS: bronchiolitis obliterans syndrome, HLA, human leukocyte antigen; LTx, lung transplantation; N/A, not applicable.