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Clinical Trial Summary

Background:

Anaplastic thyroid cancer (ATC) is one of the most aggressive of all solid tumors; chemotherapy and surgery have had no impact on local control or survival of patients, with a median survival of 3-7 months.

Crolibulin (EPC2407) is a microtubulin inhibitor that has been shown to have direct antitumor effects in vivo and in vitro, destabilizing spindles and inducing apoptosis, resulting in the disruption of neovascular endothelial cells with disruption of blood flow to the tumor. Early clinical studies with combretastatin, from which crolibulin is derived, demonstrated efficacy in a subset of patients with ATC.

Objectives:

The primary objective in the Phase I portion is to assess the safety and tolerability of cisplatin and crolibulin given in a 21-day cycle in dose-seeking cohorts.

We will assess the toxicities of crolibulin coadministered with cisplatin, evaluate dose-limiting toxicities (DLTs) and determine the maximum tolerated dose (MTD) for the combination.

The primary objective in the Phase II portion is to compare the combination crolibulin plus cisplatin versus cisplatin alone in adults with ATC by assessing the duration of progression-free survival (PFS); comparison of the response rates as evaluated by Response Evaluation Criteria in Solid Tumors (RECIST) will be an important secondary objective.

We plan on biochemical and immunohistochemical analysis of several tumor parameters including mitotic index, expression of several proteins including epidermal growth factor receptor (EGFR), vascular endothelial growth factor receptor (VEGFR), BRAF, excision repair cross-complementation group 1 (ERCC1) and tumor protein p53 (TP53). Where sufficient tissue is available we will also perform gene expression analysis, micro ribonucleic acid (microRNA) array analysis, and compare these with 3-deoxy-3 -[(18)F] fluorothymidine (FLT)-positron emission tomography (PET) and tumor growth rate constant.

Eligibility:

Phase I: adults age 18 and older with unresectable, recurrent or metastatic solid tumors.

Phase II: adults age 18 and older with anaplastic thyroid cancer.

In the phase II portion disease must be evaluable by RECIST.

All patients must have adequate hepatic, renal, and bone marrow function.

Design:

The Phase I component consists of dose-escalation cohorts of three to six patients, in which all patients receive both the study drug crolibulin with cisplatin. The MTD and DLT will be determined based on toxicities during the first three weeks of combined therapy.

The Phase II component will be a randomization study, to either crolibulin with cisplatin or cisplatin monotherapy. Patients randomized to cisplatin alone will have the opportunity the opportunity to cross over to the crolibulin arm in the event of tumor progression.

Drug administration will take place on days 1, 2, and 3 for crolibulin, and on day 1 for cisplatin, on a 21-day cycle.

Maximum number of patients for planned enrollment is 70. During the Phase I portion of the study, dose-seeking cohorts of three to six patients will be enrolled until MTD / DLT is reached for a maximum of three dose cohorts [up to 24 patients if one assumes an expansion cohort to twelve patients at the recommended phase 2 (RP2) dose]. During the randomized Phase II trial comparing the activity of the combination of crolibulin plus cisplatin with cisplatin alone it is estimated that a maximum of 40 patients will be enrolled [1:1 randomization 20 + 20 = 40 patients], and we will allow for 6 extra patients to be enrolled to compensate for a small number of non-evaluable patients.


Clinical Trial Description

Background:

Anaplastic thyroid cancer (ATC) is one of the most aggressive of all solid tumors; chemotherapy and surgery have had no impact on local control or survival of patients, with a median survival of 3-7 months.

Crolibulin (EPC2407) is a microtubulin inhibitor that has been shown to have direct antitumor effects in vivo and in vitro, destabilizing spindles and inducing apoptosis, resulting in the disruption of neovascular endothelial cells with disruption of blood flow to the tumor.

Objectives:

The primary objective in the Phase I portion is to assess the safety and tolerability of cisplatin and crolibulin given in a 21-day cycle in dose-seeking cohorts.

We will assess the toxicities of crolibulin coadministered with cisplatin, evaluate dose-limiting toxicities (DLTs) and determine the maximum tolerated dose (MTD) for the combination.

The primary objective in the Phase II portion is to compare the combination crolibulin plus cisplatin versus cisplatin alone in adults with ATC by assessing the duration of progression-free survival (PFS); comparison of the response rates as evaluated by Response Evaluation Criteria in Solid Tumors (RECIST) will be an important secondary objective.

We plan on biochemical and immunohistochemical analysis of several tumor parameters including mitotic index, expression of several proteins including epidermal growth factor receptor (EGFR), vascular endothelial growth factor receptor (VEGFR), BRAF, ERCC1 and tumor protein p53 (TP53). Where sufficient tissue is available we will also perform gene expression analysis, microRNA array analysis, and compare these with 3-deoxy-3-[(18)F] fluorothymidine (FLT)-positron emission tomography (PET) and tumor growth rate constant.

Eligibility:

Phase I: adults age 18 and older with unresectable, recurrent or metastatic solid tumors.

Phase II: adults age 18 and older with anaplastic thyroid cancer.

In the phase II portion disease must be evaluable by RECIST.

All patients must have adequate hepatic, renal, and bone marrow function.

Design:

The Phase I component consists of dose-escalation cohorts of three to six patients, in which all patients receive both the study drug crolibulin with cisplatin. The MTD and DLT will be determined based on toxicities during the first three weeks of combined therapy. After a minimum of four cycles of concurrent cisplatin and crolibulin, if the patient is achieving clinical benefit in the opinion of the investigator but can no longer tolerate cisplatin, the patient may receive crolibulin alone until he or she experiences unacceptable toxicity or progressive disease.

The Phase II component will be a randomization study, to either crolibulin with cisplatin or cisplatin monotherapy. Patients randomized to cisplatin alone will have the opportunity to cross over to the crolibulin arm in the event of tumor progression. After a minimum of four cycles of concurrent cisplatin and crolibulin, if the patient is achieving clinical benefit in the opinion of the investigator but can no longer tolerate cisplatin, the patient may receive crolibulin alone until he or she experiences unacceptable toxicity or progressive disease.

Drug administration will take place on days 1, 2, and 3 for crolibulin, and on day 1 for cisplatin, on a 21-day cycle.

Maximum number of patients for planned enrollment is 70. During the Phase I portion of the study, dose-seeking cohorts of three to six patients will be enrolled until MTD / DLT is reached for a maximum of three dose cohorts [up to 24 patients if one assumes an expansion cohort to twelve patients at the recommended phase 2 (RP2) dose]. During the randomized Phase II trial comparing the activity of the combination of crolibulin plus cisplatin with cisplatin alone it is estimated that a maximum of 40 patients will be enrolled [1:1 randomization 20 + 20 = 40 patients], and we will allow for 6 extra patients to be enrolled to compensate for a small number of non-evaluable patients. ;


Study Design

Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment


Related Conditions & MeSH terms


NCT number NCT01240590
Study type Interventional
Source National Institutes of Health Clinical Center (CC)
Contact
Status Active, not recruiting
Phase Phase 1/Phase 2
Start date November 2010
Completion date December 2016

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