Table 3. RAS mutation and PAX8/PPARγ rearrangement frequency in Western and Asian countries.

Genetic alterations	No. with mutation/total no. [%]		P value
	Western countries	Asian countries
NRAS	87/417 [21]	134/553 [24]	0.22
HRAS	27/375 [7]	31/473 [7]	0.71
KRAS	9/427 [2]	25/488 [5]	0.016*
Any RAS	148/553 [27]	190/553 [34]	0.006*
PAX8/PPARγ	110/486 [23]	9/243 [4]	<0.001*

Western countries include Europe and North American countries. *, P value <0.05.