A child term for increase/decrease antibiotic resistance needs to be made for rifamycins. Rifamycins include rifamycin, rifampicin, and rifampin
Ryfamycins mode of action is inhibition of transcription, so resistance to ryfamycin is increase/decrease resistance to inhibition of transcription.
So under increase and decrease antibiotic resistance child terms should be resistance to inhibitory transcription phenotype and a child term under that be rifamycins resistance.
DAS made terms for rifamycin resistance phenotype. See OMP:0007215-OMP:0007221. Still need to add synonyms to members of this group of antibiotics.