Given a list of Gene IDs this workflow will query against the Ensembl human genome data to fetch the genomic region for each gene, extend that region by 1000bp in each direction and use this set of ranges, one per gene, to build a query against dbSNP to return the SNP identifier and location information (chromosome name, strand and position) i = Integer.parseInt(input); output = ""+(i+1000); input output org.embl.ebi.escience.scuflworkers.java.EchoList Homo sapiens genes (NCBI36) i = Integer.parseInt(input); output = ""+(i - 1000); input output result = strand + "," + chromStart + "," + chrom + "," + snpID; strand chromStart chrom snpID result Homo sapiens SNPs (dbSNP 125) text/plain List of Ensemble gene identifiers for human. http://www.mygrid.org.uk/ontology#gene_id http://www.mygrid.org.uk/ontology#gene_id