EGFR and neoplasm: In contrast, the RTK phosphorylation patterns of the four other types of tumor samples, namely a papillary RCC (RE0020), an oncocytoma (RE0150), a renal pelvic carcinoma (RE0210), and a cystic nephroma (RE0500), were different from each other and were also different from that of the ccRCCs, except EGFR, which was highly phosphorylated in all samples (Fig.6).