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BAY73-4506 Probe Substrate Study

A Phase I, Non-randomized Open-label Study to Evaluate the Effect of BAY73-4506 (Regorafenib) on Probe Substrates of CYP 2C9 (Warfarin), 2C19 (Omeprazole) and 3A4 (Midazolam) in a Cocktail Approach (Group A) and on a Probe Substrate of CYP 2C8 (Rosiglitazone, Group B) in Patients With Advanced Solid Tumors

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01287598
Enrollment
41
Registered
2011-02-01
Start date
2011-08-02
Completion date
2018-07-30
Last updated
2019-07-10

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Neoplasms

Keywords

Phase I, Probe substrate, target therapy, small molecule, pharmacokinetics

Brief summary

* To evaluate the effect of BAY73-4506 on the pharmacokinetics of probe substrates of CYP 2C9 (warfarin), 2C19 (omeprazole) and 3A4 (midazolam) administered in a cocktail approach and on the pharmacokinetics of a probe substrate of CYP 2C8 (rosiglitazone) * To evaluate safety, anti-tumor activity, pharmacokinetics, and pharmacodynamics of BAY73-4506 in patients with advanced solid tumors

Interventions

DRUGRegorafenib (Stivarga, BAY73-4506)

BAY73-4506 administered once a daily (od) in a 21-day on / 7-day off schedule

DRUGWarfarin

CYP 2C9 (warfarin) at Cycle 1

DRUGOmeprazole

CYP 2C19 (omeprazole) at Cycle 1

DRUGMidazolam

CYP 3A4 (midazolam) at Cycle 1

DRUGRosiglitazone

CYP2C8 (rosiglitazone) at Cycle 1

Sponsors

Bayer
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Female and male subjects must be ≥ 18 years at the first screening examination / visit * ECOG Performance Status of ≤ 2 * Histological or cytological documentation of confirmed advanced solid tumors. Subjects should have measurable or non-measurable disease according to RECIST * Life Expectancy of at least 3 months * Adequate bone marrow, liver, and renal functions as assessed by the following laboratory requirements conducted within 14 days prior to the first study treatment: * Hemoglobin ≥ 9.0 g/dL * Absolute neutrophil count (ANC) ≥1,500/mm3 * Platelet count ≥ 100,000/ mm3 * Total bilirubin ≤ 1.5 times the upper limit of normal (ULN) * Alkaline phosphatase ≤ 2 times ULN * ALT and AST ≤ 2.5 x ULN (≤ 5.0 x ULN for subjects with cancer involving the liver) * Serum creatinine ≤ 1.5 times ULN and glomerular filtration rate (GFR)≥ 30 ml/min/1.73 m2, according to the MDRD (Modified Diet in Renal Disease) abbreviated formula * Lipase ≤ 1.5 ULN * INR and PTT ≤ 1.5 ULN * Subjects who are therapeutically treated with warfarin, heparin or other anticoagulants are not eligible for study participation in Group A. Subjects who are therapeutically treated with warfarin, heparin or other anticoagulants, will be allowed to participate in Group B of the study provided they meet all eligibility criteria. Close monitoring of at least weekly evaluations will be performed until INR or PTT are stable by the local standard of care. * Recovery from previous drug/procedure-related toxicities to CTC Grade 0 or 1 levels (except for alopecia), or to baseline preceding the prior treatment. Preexisting chemotherapy induced sensory neuropathy of CTC Grade ≤2 is not an

Exclusion criteria

. * Negative serum pregnancy test must be obtained within 7 days prior to the start of treatment in women of childbearing potential. Negative results must be available prior to study treatment. * Subjects enrolled in this study must use adequate barrier birth control measures prior to, during the course of the study, and 3 months after the last administration of regorafenib. * An adequate contraception includes the use of condoms or a vasectomy, hormonal contraception with implants or combined PO contraceptives, certain intrauterine devices, bilateral tubal ligation, or hysterectomy. In addition, adequate birth control measures for the subject's partner is required, such as a hormonal contraception with implants or combined PO contraceptives, certain intrauterine devices, bilateral tubal ligation, or hysterectomy, use of condoms or a vasectomy.

Design outcomes

Primary

MeasureTime frame
Pharmacokinetics of probe substrates (AUC, Cmax, etc.)Approximately 6 weeks

Secondary

MeasureTime frame
Tumor Response evaluation measured by Response Evaluation Criteria in Solid Tumors (RECIST 1.1)Up to 3 years or longer if indicated
Adverse event collectionUp to 3 years or longer if indicated

Countries

Canada

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026