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Träfflista för sökning "WFRF:(Lorenc Roman) srt2:(2012)"

Sökning: WFRF:(Lorenc Roman) > (2012)

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1.
  • Estrada, Karol, et al. (författare)
  • Genome-wide meta-analysis identifies 56 bone mineral density loci and reveals 14 loci associated with risk of fracture.
  • 2012
  • Ingår i: Nature genetics. - : Nature Publishing Group. - 1546-1718 .- 1061-4036. ; 44:5, s. 491-501
  • Tidskriftsartikel (refereegranskat)abstract
    • Bone mineral density (BMD) is the most widely used predictor of fracture risk. We performed the largest meta-analysis to date on lumbar spine and femoral neck BMD, including 17 genome-wide association studies and 32,961 individuals of European and east Asian ancestry. We tested the top BMD-associated markers for replication in 50,933 independent subjects and for association with risk of low-trauma fracture in 31,016 individuals with a history of fracture (cases) and 102,444 controls. We identified 56 loci (32 new) associated with BMD at genome-wide significance (P < 5 × 10(-8)). Several of these factors cluster within the RANK-RANKL-OPG, mesenchymal stem cell differentiation, endochondral ossification and Wnt signaling pathways. However, we also discovered loci that were localized to genes not known to have a role in bone biology. Fourteen BMD-associated loci were also associated with fracture risk (P < 5 × 10(-4), Bonferroni corrected), of which six reached P < 5 × 10(-8), including at 18p11.21 (FAM210A), 7q21.3 (SLC25A13), 11q13.2 (LRP5), 4q22.1 (MEPE), 2p16.2 (SPTBN1) and 10q21.1 (DKK1). These findings shed light on the genetic architecture and pathophysiological mechanisms underlying BMD variation and fracture susceptibility.
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2.
  • McCloskey, Eugene V, et al. (författare)
  • Denosumab reduces the risk of osteoporotic fractures in postmenopausal women, particularly in those with moderate to high fracture risk as assessed with FRAX.
  • 2012
  • Ingår i: Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research. - 1523-4681. ; 27:7, s. 1480-6
  • Tidskriftsartikel (refereegranskat)abstract
    • Denosumab has been shown to reduce the incidence of vertebral, nonvertebral, and hip fractures. The aim of the current study was to determine whether the antifracture efficacy of denosumab was dependent on baseline fracture probability assessed by FRAX. The primary data of the phase 3 FREEDOM study of the effects of denosumab in women with postmenopausal osteoporosis were used to compute country-specific probabilities using the FRAX tool (version 3.2). The outcome variable comprised all clinical osteoporotic fractures (including clinical vertebral fractures). Interactions between fracture probability and efficacy were explored by Poisson regression. At baseline, the median 10-year probability of a major osteoporotic fracture (with bone mineral density) was approximately 15% and for hip fracture was approximately 5% in both groups. In the simplest model adjusted for age and fracture probability, treatment with denosumab over 3 years was associated with a 32% (95% confidence interval [CI] 20% to 42%) decrease in clinical osteoporotic fractures. Denosumab reduced fracture risk to a greater extent in those at moderate to high risk. For example, at 10% probability, denosumab decreased fracture risk by 11% (p = 0.629), whereas at 30% probability (90th percentile of study population) the reduction was 50% (p = 0.001). The reduction in fracture was independent of prior fracture, parental history of hip fracture, or secondary causes of osteoporosis. A low body mass index (BMI) was associated with greater efficacy. Denosumab significantly decreased the risk of clinical osteoporotic fractures in postmenopausal women. Overall, the efficacy of denosumab was greater in those at moderate to high risk of fracture as assessed by FRAX.
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