A Study of Pharmacokinetic Drug Interaction Study of the Hedgehog Pathway Inhibitor GDC-0449 in Combination With Rosiglitazone or Combined Oral Contraceptive in Patients With Locally Advanced or Metastatic Solid Tumors That Are Refractory to Standard Therapy or for Whom No Standard Therapy Exists

• To evaluate the relative effect of GDC-0449 on the pharmacokinetics (Cmax and AUC) of oral contraceptive (OC; norethindrone and ethinyl estradiol) [ Time Frame: Days 1-9 ] [ Designated as safety issue: No ]
• To evaluate the relative effect of GDC-0449 on the pharmacokinetics (Cmax and AUC) of rosiglitazone [ Time Frame: Days 1-9 ] [ Designated as safety issue: No ]

• The safety objective of this study is to evaluate the safety and tolerability of GDC-0449 administered to patients with advanced solid tumors that are refractory to treatment or for whom no standard therapy exists [ Time Frame: 63 days, then every 4 weeks while patient is on study ] [ Designated as safety issue: No ]
• The secondary efficacy objective of this study is to make a preliminary assessment of tumor response in patients with advanced solid tumors who are refractory to treatment or for whom no standard therapy exists receiving GDC-0449 [ Time Frame: 63 days, then every 8 weeks while patient is on study ] [ Designated as safety issue: No ]

This is a single-arm, multicenter, Phase Ib study designed to describe the effect of GDC-0449 on the pharmacokinetics of rosiglitazone and oral contraceptives in patients with advanced solid tumors who are refractory to treatment or for whom no standard therapy exists.

• Drug: GDC-0449
  Oral repeating dose
• Drug: oral contraceptive
  Oral repeating dose
• Drug: rosiglitazone
  Oral repeating dose

• Experimental: Cohort 1
  Interventions:

  • Drug: GDC-0449
  • Drug: rosiglitazone
• Experimental: Cohort 2
  Interventions:

  • Drug: GDC-0449
  • Drug: oral contraceptive

Inclusion Criteria:

• Histologic documentation of incurable, locally advanced, or metastatic solid malignancy that has failed to respond to at least one prior regimen or for which there is no standard therapy
• Documented negative serum pregnancy test for women of childbearing potential and use of two forms of contraception. Contraception must be used while the patient is enrolled in the study and for 12 months after the patient discontinues from the study.
• For men with female partners of childbearing potential, agreement to use a latex condom and to advise their female partner to use an additional method of contraception during the study and for 3 months after their last dose of GDC-0449.
• Agreement not to donate blood or blood products during the study and for at least 12 months after their last dose of GDC-0449
• For male patients, agreement not to donate sperm during the study and for at least 3 months after their last dose of GDC-0449
• Adequate hematopoietic capacity
• Adequate renal function
• Adequate hepatic function
• At least 3 weeks since the patient's last chemotherapy, investigational agent, radiation therapy, or major surgical procedure and recovery to pre-treatment baseline or stabilization of all treatment-related toxicities

Exclusion Criteria:

• Active infection requiring intravenous (IV) antibiotics
• Clinically important history of liver disease significantly impairing hepatic function, including active viral or other hepatitis, current alcohol abuse, or cirrhosis
• Any medical condition or diagnosis that would likely impair absorption of an orally administered drug
• Pregnant or lactating
• Treatment with excluded medications, including strong CYP450 inhibitors and inducers, within 2 weeks of study entry
• Male patients already receiving rosiglitazone
• Male patients with a known contraindication to rosiglitazone
• Female patients already receiving oral contraception < 14 days prior to Day 1
• Female patients with known contraindication to oral contraceptions