In addition, several Drosophila transcripts that are differentially expressed in response to artificial selection have murine orthologues associated with alcohol related phenotypes (Additional data file 12), including Aldehyde dehydrogenase family 6 member, which maps to a region on 14q24.23 implicated in alcoholism [76], Carnitine palmitoyltranferse 1, Cathepsin B, Distal-less homeobox 1, Glutamate oxaloacetate transaminase 2, Dorsal switch protein 1 and synapsin [17,77,78]. Here, CTSB is linked to alcohol drinking.