Table 1.

Results of MCT1 and CD147 Immunostaining

ASPS case*	Age, sex	Primary site	ASPL-TFE3 fusion type	PASD granules	MCT1 immunostaining			CD147 immunostaining
										Membrane staining	Cytoplasmic staining		Membrane staining	Cytoplasmic staining
					Diffuse	Discrete granules	Diffuse	Discrete granules
1	19 F	Thigh	1	++	++	−	+++	++	+	++
2	36 F	Axilla	2	++	+	−	+++	−	+	++
3	31 F	Thigh	1	+	+f	−	−	+f	+	+
4	38 M	Arm	2	+++	+f	+	+++	−	+	++
5	29 F	Thigh	1	++	+	+	+ rare	++	+	+
7	40 F	Thigh	1	++	+f	−	−	+f	−	−
14	36 F	Thigh	1	++	+	−	++	++	+	+
15	41 M	Shoulder	;*>;0>†	−	+f	++	−	−	+	+
16	36 F	Thigh	n.a.	+++	++	+	+++	+	++	++
17	21 F	Thigh	;*>;b>‡	+	++	−	+ rare	−	−	−

+, few; ++, moderate; +++, many; f, focal; n.a., not available.

*Unique case numbers from serial collection of ASPS samples.

^†TFE3 genomic rearrangement demonstrated by Southern blot analysis (see text). No RNA available for reverse-transcriptase-polymerase chain reaction.

^‡Cytogenetic evidence of t(X;17) (see text). No RNA available for reverse-transcriptase-polymerase chain reaction.