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Spots Global Cancer Trial Database for Predictors of Adjuvant Endocrine Therapy in Women With Breast Cancer

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Trial Identification

Brief Title: Predictors of Adjuvant Endocrine Therapy in Women With Breast Cancer

Official Title: Predictors of Adjuvant Endocrine Therapy in Women With Breast Cancer

Study ID: NCT02992730

Interventions

No Intervention

Study Description

Brief Summary: Breast cancer is the leading cancer diagnosed in women and the second cause of cancer death. Of all racial/ethnic groups in the US, Black women have the highest rate of breast cancer deaths. Two-thirds of Black breast cancer patients have estrogen receptor (ER) positive tumors that can be treated with adjuvant hormonal therapy. If taken for the full five years, this therapy has been shown to reduce mortality by 50%. However, ER positive Black women are more likely to die from their breast cancer as ER positive White women. Preliminary data suggest that non-adherence to adjuvant hormonal therapy could explain some of this disparity. To date, no study has systematically examined psychosocial, healthcare, and biological factors that predict adherence to hormonal therapy in Black women with breast cancer. To begin to fill this knowledge gap, Investigators will conduct a prospective cohort study of 422 ER positive Black breast cancer patients recruited from health maintenance organizations (HMOs). Our primary outcome is adherence to therapy at 36 months post initiation. Specific aims are to: 1) Examine psychosocial factors (e.g. health beliefs, socio-cultural values, etc.) that predict adherence to hormonal therapy; 2) Identify clinical (e.g., side effects), and biological (e.g., stage, etc.) factors that predict adherence to hormonal therapy; and 3) Evaluate healthcare variables (e.g., communication, management of side effects, etc.) that predict adherence. Investigators will also explore the role of CYP2D6 genetic variations in adherence to hormonal therapy which is novel and will increase knowledge about this genetic factor in Blacks. The study is focused on the time-period (first 3 years) when women appear to be the most vulnerable to terminating treatment prematurely. A better understanding of predictors of adherence in Black women may help target interventions and ultimately improve potentially avoidable adverse breast cancer outcomes in this underserved group.

Detailed Description: Investigators will employ the Adherence Model of Behavior to identify clinical, psychosocial, and healthcare delivery predictors of longitudinal hormonal therapy adherence in women with (hormone receptor) HR positive breast cancer. This study is significant because: (1) most breast cancers in Blacks and Whites are HR positive (\~75%)1,27; (2) hormonal therapy is recommend for all women with HR positive cancer since it reduces recurrence and mortality; (3) women who adhere to hormonal therapy have lower mortality than those who do not28; (4) adherence to hormonal therapy is suboptimal, even in HMO settings; (5) current guidelines recommend at least 5 years of hormonal therapy6; (6) along with Whites, investigators will examine adherence behaviors in Blacks, a group reported to have poorer outcomes than Whites, even among HR positive cases of similar stage;) past studies have documented poor adherence but few have systematically examined reasons for non-adherence. Overall, our results will be clinically useful and will inform interventions and pharmacogenetics research. For instance, if investigators find that communication strongly influences adherence, investigators can develop and implement patient self-efficacy or physician reminder-based interventions to enhance communication about adherence between patients and clinicians in HMOs. If investigators find that different factors predict adherence in Blacks versus Whites, investigators can develop tailored interventions. The PI has extensive experience developing tailored interventions to improve communication and uptake of chemotherapy in Blacks and Latinas.The next sections highlight the background that supports the significance of our research.

Eligibility

Minimum Age: 21 Years

Eligible Ages: ADULT, OLDER_ADULT

Sex: FEMALE

Healthy Volunteers: Yes

Locations

Georgetown University, Washington, District of Columbia, United States

Contact Details

Useful links and downloads for this trial

Clinicaltrials.gov

Google Search Results

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