Vismodegib, Free Base, >99%

• Storage: Store at or below -20 ºC. Solubility: Soluble in DMSO at 200 mg/mL; soluble in ethanol at 10 mg/mL with warming; very poorly soluble in water; maximum solubility in plain water is estimated to be about 10-20 µM buffers, serum, or other additives may increase or decrease the aqueous solubility. Disposal: A.

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• Vismodegib (GDC-0449) is a potent hedgehog (Hh) signaling pathway inhibitor.
• The overexpression of ATP-binding cassette (ABC) transporters is associated with multidrug resistance. Vismodegib is a potent inhibitor of two ABC transporters, ABCG2/BCRP and ABCB1/Pgp, with IC50 values of 1.4 and 3.0 µM, respectively. Zhang, Y., et al. "Hedgehog pathway inhibitor HhAntag691 is a potent inhibitor of ABCG2/BCRP and ABCB1/Pgp." Neoplasia 11: 96-101 (2009).
• A phase 1 clinical trial demonstrated that vismodegib had antitumor activity in locally advanced or metastatic basal-cell carcinoma. Von Hoff, D.D., et al. "Inhibition of the hedgehog pathway in advanced basal-cell carcinoma." N. Engl. J. Med. 361: 1164-1172 (2009).
• The treatment with vismodegib of a 26-year-old man with metastatic medulloblastoma that was refractory to multiple therapies resulted in rapid but transient regression of the tumor and relief of symptoms. Rudin, C.M., et al. "Treatment of medulloblastoma with hedgehog pathway inhibitor GDC-0449." N. Engl. J. Med. 361: 1173-1178 (2009).
• Vismodegib at doses as low as 12.5 mg/kg BID caused complete tumor regression in a medulloblastoma allograft mouse model which is dependent on the Hh pathway for growth. Robarge, K.D., et al. "GDC-0449-a potent inhibitor of the hedgehog pathway." Bioorg. Med. Chem. Lett. 19: 5576-5581 (2009).
• Acquired mutations in Smoothened (SMO), a serpentine receptor, inhibited the ability of vismodegib to bind SMO and served as a mechanism of drug resistance in human cancer. Yauch, R.L., et al. "Smoothened mutation confers resistance to a Hedgehog pathway inhibitor in medulloblastoma." Science 326: 5576-5581 (2009).
• Vismodegib is the active ingredient in the drug product sold under the trade name Erivedge®.  This drug is currently approved in a least one country for the treatment of adult patients with metastatic basal cell carcinoma, or with locally advanced basal cell carcinoma that has recurred following surgery or who are not candidates for surgery and who are not candidates for radiation.  NOTE:  THE VISMODEGIB SOLD BY LC LABORATORIES FOR RESEARCH IS NOT ERIVEDGE®, AND IS NOT FOR HUMAN USE.
• Sold for laboratory or manufacturing purposes only; not for human, veterinary, food, or household use.
• This product is offered for R&D use in accordance with (i) 35 USC 271(e)+A13(1) in the U.S.; (ii) Section 69.1 of Japanese Patent Law in Japan; (iii) Section 11, No. 2 of the German Patent Act of 1981 in Germany; (iv) Section 60, Paragraph 5b of the U.K. Patents Act of 1977 in the U.K.; (v) Sections 55.2(1) and 55.2(6) and other common law exemptions of Canadian patent law; (vi) Section 68B of the Patents Act of 1953 in New Zealand together with the amendment of same by the Statutes Amendment Bill of 2002; (vii) such related legislation and/or case law as may be or become applicable in the aforementioned countries; and (viii) such similar laws and rules as may apply in various other countries.
• Not available in some countries; not available to some institutions; not available for some uses.