There are 7 TAG genes on Chromosome 21 !

Symbol
Location
Category
Name
PPIAP22 21q21.1 -- Peptidylprolyl Isomerase A (Cyclophilin A) Pseudogene
GRIK1-AS2 21q22.11 -- GRIK1 Antisense RNA
TIAM1 21q22.11 Other T-Cell Lymphoma Invasion And Metastasis 1
ETS2 21q22.2 Oncogene V-Ets Avian Erythroblastosis Virus E26 Oncogene Homolog...
COL18A1 21q22.3 Tumor suppressor gene Collagen, Type XVIII, Alpha 1
ERG 21q22.3 Oncogene V-Ets Avian Erythroblastosis Virus E26 Oncogene Homolog
RUNX1 21q22.3 Other Runt-Related Transcription Factor 1