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Clinical Trial Summary

This study will investigate the safety, tolerability, pharmacokinetic (PK), and pharmacodynamic (PD) activity of adavosertib, both as monotherapy and in combination with gemcitabine, cisplatin, or carboplatin in participants with advanced solid tumors. Dose limiting toxicities (DLT) of adavosertib in combination with gemcitabine, cisplatin, or carboplatin will also be assessed. The primary hypotheses of the study are as follows: 1) Oral administration of adavosertib both as monotherapy and in combination with either gemcitabine, cisplatin, or carboplatin in patients with advanced solid tumors will be safe and tolerable, 2) The side effects observed in participants with advanced solid tumors after administration of adavosertib combined with each of the chemotherapies (gemcitabine, cisplatin and carboplatin) will allow for the definition of a single dose combination Maximum Administered Dose (MAD)/Maximum Tolerated Dose (MTD) and a multiple dose combination Biologically Effective Dose (BED)/MTD for each of the 3 combinations, 3) At a tolerated dose, adavosertib plasma exposure will exceed target thresholds established in preclinical models, and 4) At a tolerated dose, PD markers of adavosertib activity in combination with either gemcitabine, cisplatin, or carboplatin (in surrogate tissue and/or tumor) will meet or exceed the target threshold established in preclinical models.


Clinical Trial Description

Part 1 consists of single dose adavosertib monotherapy. If well tolerated, participants in Part 1 will continue on to one of three treatment arms in Part 2-A which consists of a single lower dose of adavosertib in combination with standard chemotherapy: 1) Adavosertib +Gemcitabine (1000 mg/m^2), 2) Adavosertib + Cisplatin (75 mg/m^2) or 3) Adavosertib +Carboplatin at an area under the time curve concentration of 5 mg/min/ml (AUC5). Following completion of Part 2-A, adavosertib will be administered twice daily (BID) for 2.5 days (multi-dose) starting concomitantly with each administration of chemotherapy in Part 2-B. After a preliminary combination MTD of adavosertib and chemotherapy has been established in Part 2B, the MTD confirmation expansion will occur in Part 3. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT00648648
Study type Interventional
Source Merck Sharp & Dohme LLC
Contact
Status Completed
Phase Phase 1
Start date February 25, 2008
Completion date January 6, 2014

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