The main page consists of a web form for the primary user input. Users must first either upload a list of numeric SNP identification numbers as a file or enter the list directly into a web form. The user may optionally provide P-values from statistical tests for genotype–phenotype correlation. In the section labeled ‘Prioritization of specific genes and other genomic regions’, the user can specify a list of genes and prioritization scores to be used in the ‘User Gene’ node of the GIN model.