Hi All, I have a list of genes and I want the snps matching of these genes (the other way too e.g: Snps ----> genes) Is there any R package to do this ? Regards M -- Mohamed Lajnef INSERM Unité 955. 40 rue de Mesly. 94000 Créteil. Courriel : Mohamed.lajnef at inserm.fr tel. : 01 49 81 31 31 (poste 18470) Sec : 01 49 81 32 90 fax : 01 49 81 30 99