Table 2.

ALK-positve and ALK-negative samples in tumor and adjacent normal areas

Patient category
ALK PositiveALK negative
HistologyTumorNontumorTumorNontumor
No. areas tested (range)16 (7-20)8 (5-15)8 (18-20)8 (5-10)
Mean no. cells scored (range)15 (12-16)14 (11-19)15 (14-16)13 (11-15)
% Cells positive for rearrangement (range)53.80 (22.25-86.62)6.81 (2.14-11.14)5.98 (3.51-9.45)5.26 (0.71-11.21)