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Clinical Trial Summary

Background:

- Imaging studies like positron emission tomography (PET) and computed tomography (CT) scans are used to detect tumor responses to cancer treatment. However, it may be difficult to detect early response to lung cancer or thymoma treatment with standard PET/CT scans. These scans cannot easily show a difference between remaining cancer cells and inflammation. Researchers want to try a new PET/CT scan tracer that may be able to show the difference between these cells. 18F-Fluorothymidine (18F-FLT) is better at showing which cells are still actively dividing. PET/CT scans with 18F-FLT may help show if tumor cells are responding to early stages of treatment.

Objectives:

- To see if 18F-FLT is a safe and effective imaging study tracer to show early cancer response to treatment.

Eligibility:

- Individuals at least 18 years of age who are being treated for lung cancer or thymoma.

Design:

- Participants will be screened with a physical exam and medical history. Blood, urine, and tumor tissue samples will be collected.

- Participants will have two PET/CT scans on separate days before starting chemotherapy. One scan will be with a standard radiotracer. The other will be with the 18F-FLT tracer.

- About 2 weeks after starting chemotherapy, participants will repeat the two PET/CT scans on separate days. Additional blood samples will be collected at this time.


Clinical Trial Description

Background:

- (18)F FLT, a thymidine analog, has uptake in tumors that correlates with proliferative rates and may be an early predictor of tumor response.

- Due to uptake in inflammatory tissues, routinely used (18)F FDG PET/CT is often unable to distinguish therapeutic response from reactive change early in therapy.

- Molecularly targeted therapies relating to the MEK kinase pathway in non small cell lung cancer (NSCLC) and the IGF pathway (anti-IGF-1R monoclonal antibodies) in thymoma, affect tumor proliferation.

- We intend to explore the potential utility of (18)F FLT PET/CT imaging as an early marker of therapeutic response in molecularly targeted therapies relating to the MEK kinase pathway in NSCLC and the IGF pathway in thymic tumors.

Objectives:

-To explore the relationship between change in (18)F FLT tumor uptake (pre-treatment and soon after initiation of treatment (2 weeks)) and progression free survival in NSCLC patients treated with AZD6244 and in thymoma patients with IMC-A12, Cixutumumab

Eligibility:

- Subjects with pathology proven lung cancer or thymoma enrolled in an NCI therapy protocol.

- Participant must be 18 years or older and have ECOG Performance of less than or equal to 2.

- Patients must have measurable disease by RECIST criteria.

- Patients must have the ability to provide informed consent. All subjects must sign a document of informed consent indicating their understanding of the investigational nature and risks of the study before any protocol related studies are performed.

Design:

-This is a pilot study which will incorporate (18)F FLT and (18)F FDG PET/CT imaging sessions prior to therapy with AZD6244, Selumetinib, in NSCLC and IMC-A12, Cixutumumab, in thymoma, and 2 weeks (+/- 4 days) following therapy initiation. The imaging parameters will be evaluated with respect to clinical response (as determined under the referring protocol). We expect to enroll 24 evaluable patients in this single center study. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT01610544
Study type Interventional
Source National Institutes of Health Clinical Center (CC)
Contact
Status Withdrawn
Phase Phase 2
Start date May 10, 2012
Completion date December 10, 2012

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