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Spots Global Cancer Trial Database for Intermittent Letrozole Therapy in Postmenopausal Women With Metastatic Breast Cancer

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Trial Identification

Brief Title: Intermittent Letrozole Therapy in Postmenopausal Women With Metastatic Breast Cancer

Official Title: A Phase II Clinical Trial of Intermittent Letrozole Therapy in Postmenopausal Women With CA 15-3 Positive (Carcinoma Antigen 15-3), Hormone Receptor Positive, Metastatic Breast Cancer

Study ID: NCT00549822

Conditions

Breast Cancer

Interventions

Letrozole

Study Description

Brief Summary: The purpose of this research study is to study the effects of using aromatase inhibitor (AI) therapy intermittently on participants with breast cancer. AIs are a class of drugs used to treat breast cancer in postmenopausal women. They work by decreasing the level of estrogen, which is believed to stimulate the growth of tumor tissue. Breast cancer that progresses despite therapy with an AI is thought to have become resistant to AI therapy. There is scientific evidence to suggest that resistant breast cancer cells learn to grow at the very low levels of estrogen present on AI therapy, and that increasing estrogen levels even slightly by stopping AI therapy may inhibit the breast cancer cells.

Detailed Description: * This study involves treating participants with intermittent AI therapy. The AI will be stopped at the time they enter the study. We plan on monitoring a marker in the participants blood called CA 15-3 (or CA 27.29) every 4 weeks to help us make a decision of when to re-start treatment with letrozole (femara). This marker is known to rise when disease is progressing and drop when the disease is responding to treatment. We will be stopping and re-starting therapy based on the changes of CA 15-3 in the participants blood. * In addition to bloodwork, the following tests and procedures will be performed on a monthly basis: medical history; physical examination and performance status. * Every 8 weeks the following will be performed: Tumor assessment by physical exam (if possible); Chest x-ray or CT scan or chest; CT scans of abdomen and pelvis; and bone scan.

Eligibility

Minimum Age: 18 Years

Eligible Ages: ADULT, OLDER_ADULT

Sex: FEMALE

Healthy Volunteers: No

Locations

Dana-Farber Cancer Institute, Boston, Massachusetts, United States

Massachusetts General Hospital, Boston, Massachusetts, United States

Contact Details

Name: Paul Goss, MD, PhD

Affiliation: Massachusetts General Hospital

Role: PRINCIPAL_INVESTIGATOR

Useful links and downloads for this trial

Clinicaltrials.gov

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