Musculoskeletal Pain in Postmenopausal, Early Breast Cancer Patients Receiving Aromatase Inhibitor Therapy - A Pilot Study (AIMS)
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|ClinicalTrials.gov Identifier: NCT00653718|
Recruitment Status : Completed
First Posted : April 7, 2008
Last Update Posted : July 31, 2009
In 2005, the EBCIG demonstrated the efficacy of tamoxifen in improving overall survival in hormone receptor positive breast cancers. However, tamoxifen shows partial estrogen agonist activity, which is responsible for the drug's detrimental effects such as endometrial carcinoma, thromboembolism, and tamoxifen resistance. More recently, aromatase inhibitors have been shown to be superior to tamoxifen in the metastatic and adjuvant settings. The ATAC trial demonstrated improved disease-free survival (DFS) for 5 years of anastrozole compared to 5 years of tamoxifen 3. The BIG 1-98 trial results demonstrated that after a median follow-up of 25.8 months, letrozole improved DFS and distant DFS when compared to tamoxifen. Based on these results, adjuvant hormonal therapy with Aromatase Inhibitors (AI) has become the preferred therapy for post-menopausal woman.
However, AI therapy is also associated with toxicities that merit in-depth studies, one of them being an increase in musculoskeletal pain. In the ATAC trial, at a median follow-up of 5.7 years, arthralgia was significantly higher (35.6% vs. 29.4%) and fractures were also increased (11.0% vs. 7.7%) when anastrozole was administered for 5 years following surgery with or without chemotherapy 3. The incidence of arthralgia was also significantly higher in the MA-17 trial, with 25% of patients receiving letrozole developing arthralgia compared with 21% in the placebo group following 5 to 6 years of tamoxifen 5.
Traditionally in cancer clinical trials, the reporting of musculoskeletal pain has been based on the "Common Terminology Criteria for Adverse Events", which covers a wide range of symptoms and does not facilitate the documentation of a pain syndrome in a specific manner. Therefore, there is a need to design a study that will describe the nature of the pain associated with the administration of AI therapy using tools that have been validated for capturing a multidimensional phenomenon such as pain.
|Condition or disease|
|Study Type :||Observational|
|Actual Enrollment :||30 participants|
|Official Title:||Musculoskeletal Pain in Postmenopausal, Early Breast Cancer Patients Receiving Aromatase Inhibitor Therapy - A Pilot Study|
|Study Start Date :||May 2008|
|Actual Primary Completion Date :||July 2008|
|Actual Study Completion Date :||December 2008|
- Musculoskeletal pain [ Time Frame: Every two weeks ]
- Lymphocyte gene expression profiling [ Time Frame: Every two weeks ]
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00653718
|Centre hospitalier de l'Université de Montréal|
|Montréal, Quebec, Canada, H2W 1T8|
|Principal Investigator:||André Robidoux, MD||Centre hospitalier de l'Université de Montréal (CHUM)|