RefSeq Transcript:
"urlTemplate": "http://www.ncbi.nlm.nih.gov/gene/?term=$$"

UCSC Transcript:
, "urlTemplate": "http://genome.ucsc.edu/cgi-bin/hgGene?hgg_transcript=$$"

RS ID:
, "urlTemplate": "http://www.ncbi.nlm.nih.gov/snp/?term=$$"

AceView
http://genome.ucsc.edu/cgi-bin/hgTracks?position=$$

CCDS
, "urlTemplate": "http://genome.ucsc.edu/cgi-bin/hgTracks?position=$$"
Phytozome

Ensembl
, "urlTemplate": "http://uswest.ensembl.org/Homo_sapiens/Gene/Summary?t=$$"
, "urlTemplate": "http://uswest.ensembl.org/Homo_sapiens/Gene/Summary?g=$$"
Hugo
, "urlTemplate": "http://www.genenames.org/cgi-bin/gene_symbol_report?hgnc_id=$$"