rs1544410 is a Vitamin D Receptor (VDR) single nucleotide polymorphism. It is unlikely that it has functional significance because it is located in an intron (Liu et. al.), but it is in strong linkage disequilibrium with rs731236 (Dvornyk et al), which is located in an exon.
Liu, Yao, Wei Chen, Zhi-bin Hu, Lin Xu, Yong-qian Shu, Shi-yang Pan Jun-Chang Dai, Guang-Fu Jin, Hong-zia Ma and Hong-bing Shen. “Plasma Vitamin D Levels And Vitamin D Receptor Polymorphisms Are Associated with Survival of Non-small Cell Lung Cancer.” Chin J Cancer Res (2011): n. pag. Web. 31 Mar 2011.