LRP5 polymorphisms and response to alendronate treatment in Chinese postmenopausal women with osteoporosis.

Pharmacogenomics

Department of Endocrinology, Key Laboratory of Endocrinology of Ministry of Health, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Shuaifuyuan No. 1, Dongcheng District, Beijing 100730, China.

Published: April 2014

AI Article Synopsis

  • The study aimed to explore how variations in the LRP5 gene affect the effectiveness of alendronate treatment in women with osteoporosis in China.
  • The research involved 639 postmenopausal women who were treated with alendronate, and the A1330V polymorphism in LRP5 was examined alongside changes in bone mineral density and bone turnover markers before and after treatment.
  • Results showed that women with CC and CT genotypes experienced more significant improvements in lumbar spine bone density and decreases in specific bone turnover markers than those with the TT genotype, indicating that the TT genotype may signal a weaker response to the medication.

Article Abstract

Aim: To investigate the association between LRP5 gene polymorphisms and response to alendronate in Chinese osteoporotic women.

Materials & Methods: Six hundred and thirty nine Chinese postmenopausal women with osteopenia or osteoporosis were included and received alendronate treatment. The A1330V polymorphism of LRP5 was investigated. Bone mineral density (BMD) and bone turnover markers (ALP and β-isomerized carboxy-telopeptide of type I collagen [β-CTX]) were measured before and after treatment. The correlation of LRP5 polymorphisms with changes in BMD and bone turnover biomarkers were analyzed after treatment.

Results: After 12 months of treatment, participants with CC and CT genotypes had a larger increase in lumbar spine BMD and a larger decrease in serum β-CTX and ALP levels than those with TT genotype (all p < 0.001). No significant genotype-treatment interaction was found in hip BMD.

Conclusion: The A1330V polymorphism of LRP5 is possibly correlated with response to alendronate treatment in Chinese women with osteoporosis, and the TT genotype could possibly predict a weak response to alendronate.

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http://dx.doi.org/10.2217/pgs.14.12DOI Listing

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