The insertion P{EP}G13128 (FBti0124422) is not recorded in FlyBase as an allele of any gene and there is no Affected Gene entry.  The sequence location, based on the 5' flank determined by GenExel and the 3' flank determined by the GDP is  2L:9 ,947,519..9,947,519 + (release 6).  This is at +129 bp within the annotated transcription unit of CG5853.  This insertion should therefore be considered an allele of CG5853.