- Sulfonamide derivative, E7820, is a unique angiogenesis inhibitor suppressing an expression of integrin alpha2 subunit on endothelium. Funahashi, Y., Sugi, N.H., Semba, T., Yamamoto, Y., Hamaoka, S., Tsukahara-Tamai, N., Ozawa, Y., Tsuruoka, A., Nara, K., Takahashi, K., Okabe, T., Kamata, J., Owa, T., Ueda, N., Haneda, T., Yonaga, M., Yoshimatsu, K., Wakabayashi, T. Cancer Res. (2002)