Table 1.

Immunohistochemical staining for phosphorylated and total FAK in pediatric renal tumor specimens

Tumor typenFAK 4.47 (%)pFAK Y397 (%)P (vs. MRKT)
Malignant rhabdoid kidney tumor129 (75)6 (50)
Clear cell sarcoma124 (33)1 (8)NS
Wilms tumor196 (32)4 (21)0.03
Mesoblastic nephroma121 (8)0 (0)0.003

NOTE: P < 0.05 considered significant (bolded).

Abbreviations: FAK 4.47, total FAK protein; NS, not statistically significant; pFAK Y397, FAK phosphorylated at tyrosine 397 residue.