Breast Cancer, Endocrine Therapy, Endocrine Therapy Adverse Reaction, Vitamin D Deficiency, Nutrition Disorders, Obesity
Conditions
Keywords
Vitamin D, Adverse, Cytochrome p450, VDR, Nutrients, Gene Expression, Tamoxifen, Anastrozole, Exemestane
Brief summary
The protocol involves measurement of 25 hidroxy vitamin D, gene expression of cytochrome and vitamin D receptor , endoxifen, tamoxifen, exemestane, and other metobolites related to nutrition and endocrine metabolism.
Interventions
Use of tamoxifen for breast cancer recurrence prevention
Use of exemestane for breast cancer recurrence prevention
Use of anastrozole for breast cancer recurrence prevention
Initial diagnosis of breast cacner by biopsy or mastectomy
Breast cancer recurrence under endocrine therapy
Sponsors
Study design
Eligibility
Inclusion criteria
* Breast cancer women under endocrine therapy or recurrence of disease after endocrine therapy * Signed consent
Exclusion criteria
* Mental retardation
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Body Composition | One time at enroll with at least 3 months of endocrine therapy | Body composition (bioimpedance) |
| Hidroxy Vitamin D Concentration | One time after minimum 3 months of tamoxifen, anastrozole or exemestane treatment (endocrine therapy) | Plasma levels of Hidroxy Vitamin D |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Anastrozole | One time. After minimum 3 months of anastrozole treatment | Anastrozole plasma levels |
| Recurrence | One time. In recurrence after at least 3 months with endocrine therapy | Recurrence of breast cancer after endocrine therapy with tamoxifen or aromatase inhibitors |
| Exemestane | One time. After minimum 3 months of exemestane treatment | Exemestane plasma levels |
| Tamoxifen plasma levels | One time. After minimum 3 months of tamoxifen treatment | Tamoxifen plasma levels |
Other
| Measure | Time frame | Description |
|---|---|---|
| Food consumption recall 24 hours (ASA 24) | At enroll | Automated Self-Administered Recall System |
Countries
Mexico