Gene List is Tab-separated values file. This file has just one column, that is the Entrez ID of genes (1 Entrez ID per line).

The following IDs are accepted also:

1. Ensembl gene
2. HGNC symbol
3. Entrez id
4. Affy HG U133A probeset
5. Affy HG U133B probeset
6. Affy HG U133-PLUS-2 probeset
7. Affy HTA 2.0

Here is an example of a file with 4 genes to be evaluated:

Gene_1
Gene_2
Gene_3
Gene_4