OMIM uses genomic reference build GRCh38 available at ftp://ftp.ncbi.nih.gov/gene/DATA/gene2refseq.gz.
If you wish to get genomic coordinates for GRCh37/hg19, that data is available from NCBI at ftp://ftp.ncbi.nlm.nih.gov//genomes/H_sapiens/ARCHIVE/ANNOTATION_RELEASE.105/GFF/ref_GRCh37.p13_top_level.gff3.gz.
如果要用GRCh37/hg19参考基因组，需要转换可使用UCSC提供的工具：https://genome.ucsc.edu/cgi-bin/hgLiftOver
