Table 1.

Prevalence of ALK-rearranged NSCLC in different countries.

Authors, year of publication	Country	ALK-rearranged tumors
Soda et al., 2007 (2)	Japan	6.7% (n = 75)
Rodig et al., 2009 (17)	USA	5.6% (n = 358)
Wong et al., 2009 (4)	China	4.9% (n = 266)
Sakairi et al., 2010 (19)	Japan	6.4% (n = 109)
Takahashi et al., 2010 (16)	Japan	2.4% (n = 211)
Sun et al., 2010 (15)	China	5.7% (n = 52)
Paik et al., 2011 (11)	Korea	3.8% (n = 735)
Li et al., 2011 (12)	China	5% (n = 202)
Kim et al., 2011 (13)	Korea	3.7% (n = 449)
Paik et al., 2011 (14)	Korea	4.2% (n = 453)
Yang et al., 2012 (23)	USA	8.2% (n = 300)
Lopes et al. (present study)	Brazil	3.2% (n = 62)