Table 4. PIK3CA mutational status according to liposarcoma histologic subtype.

Histologic classification	Wild type	Mutation
		Exon 9			Exon 20		Total, n (%)
		E542K	E545K	Q546K	H1047R	H1047L
Well- and De-differentiated	44	0	0	0	1	0	1 (2.2)
Well- differentiated					1	0	1
De-differentiated					0	0
Myxoid and Round cell, Pleomorphic	52	2	1	2	2	1	8 (13.3)
Myxoid and Round cell	43	2	0	1	2	1	6
Pleomorphic	9	0	1	1	0	0	2
Total, n (%)	96 (91.4)		5 (4.8)		4 (3.8)		P=0.043
				9 (8.6)