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Spots Global Cancer Trial Database for Characterization of Receptors in Non-functioning Pituitary Macroadenomas

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Trial Identification

Brief Title: Characterization of Receptors in Non-functioning Pituitary Macroadenomas

Official Title: Characterization of Receptors Present in Non-functioning Pituitary Macroadenomas by Reverse Transcriptase- Polymerase Chain Reaction (RT-PCR)

Study ID: NCT00852501

Conditions

Pituitary Tumor

Study Description

Brief Summary: Characterization of receptors present in non-functioning pituitary macroadenomas by Reverse Transcriptase- Polymerase Chain Reaction (RT-PCR) would assist with targeted medical therapy based on the information obtained by immunohistochemistry and RT-PCR.

Detailed Description: The pituitary gland in the brain is the master hormonal gland and is surrounded by important nerves and blood vessels. The pituitary gland can develop various types of tumors, some which do not produce any hormones and are called non-functioning pituitary adenomas. These non-functioning tumors can grow and can cause compression of these important structures. The usual treatment of large non-functioning pituitary macroadenoma is surgery. As it is surrounded by neuro-vascular bundles, this makes complete removal of the tumor sometimes impossible and even dangerous. A large number of subjects will still have some residual tumor post-surgery. The risks of residual tumor are further growth with compression and compromise of the function of surrounding vital organs especially vision. If there is further growth of the tumor the options at present are repeat surgery or radiotherapy. Repeat surgery involves all the risks associated with brain surgery and sometimes may not be possible if very close to vital organs, while radiotherapy will over a period of time lead to complete or partial deficiency of pituitary hormone function and has been associated with long term cognitive deficits. In addition radiotherapy has a lag time of 12-24 months prior to onset of action. However, pituitary tumors that do not actively secrete hormones may still harbour receptors to various hormones. The blockage of these receptors by various medications may enable us to stop the tumor from growing or recurring after surgery. This may open up a novel means of treatment of these non functioning tumors. So far there is very little information in the literature about the type of receptors present in these tumors. Our study proposes to obtain a piece of the tissue removed during surgery and perform receptor characterization to help improve our knowledge in that area. Also correlating the receptor status with the clinical, hormonal and radiological profile of the patients may help to develop improved treatment strategies in the future and help us to predict the possibility of tumor regrowth.

Eligibility

Minimum Age: 18 Years

Eligible Ages: ADULT, OLDER_ADULT

Sex: ALL

Healthy Volunteers: No

Locations

John H Stroger Jr. Hospital of Cook County, Chicago, Illinois, United States

Contact Details

Name: Ambika Babu, MD

Affiliation: Cook County Health

Role: PRINCIPAL_INVESTIGATOR

Useful links and downloads for this trial

Clinicaltrials.gov

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