Personalizing Osteoporosis Care: Clinical & Genetic Risk Factors for Atypical Femur Fractures
Overview
- Phase
- Not Applicable
- Intervention
- Not specified
- Conditions
- Atypical Femur Fracture
- Sponsor
- University Health Network, Toronto
- Enrollment
- 1200
- Locations
- 3
- Primary Endpoint
- Associations between AFF and clinical Risk Factor
- Status
- Active, not recruiting
- Last Updated
- 2 years ago
Overview
Brief Summary
The overall objective of this project is to identify clinical and genetic risk factors for Atypical Femur Fractures (AFFs) in Anti-resorptive therapy (ART) users by conducting a case control study of 330 cases of AFFs and 660 controls without AFFs matched for age, sex, race and duration of ART.
Detailed Description
Antiresorptive therapy (ART) drugs are effective osteoporosis treatment and help decrease osteoporosis-related fractures. However, their long-term use has been associated with rare but serious atypical femur fractures (AFFs). Fear of these side effects has caused a substantial decline in the use of these effective drugs and rising fracture rates. The investigators propose to compare 330 cases of people with AFFs to 660 matched controls to explore similarities and differences in (1) clinical findings, such as type of ART and length of use, prior fracture, bone density, femur geometry, etc., and (2) genetic variants, and then (3) to validate the top few genetic variants to see if they are indeed present in an additional group of 100 AFF patients and not present in 100 control subjects. This study will determine clinical and genetic risk factors for these debilitating atypical fractures such that at-risk patients in the future can be treated differently to avoid them.
Investigators
Eligibility Criteria
Inclusion Criteria
- •Cases: Have experienced a confirmed, documented Atypical femur fracture
- •Controls: currently on anti-resorptive therapy, matches AFF case by age, race and length of ART use
Exclusion Criteria
- Not provided
Outcomes
Primary Outcomes
Associations between AFF and clinical Risk Factor
Time Frame: baseline
Associations between AFFs and clinical risk factors
Associations between AFF and common genetic variants
Time Frame: baseline
Associations of common genetic variants among patients with AFFs
Validation of top genetic variants
Time Frame: baseline
To validate the top few genetic variants identified in the above case-control study in a separate cohort of 100 cases and 100 controls.