The present invention relates to immunotherapeutic compounds whose efficacy and toxicity can vary at the same dose between individuals due to natural variations within individual subjects, such as variations in the response of the immune system in response to administration of the immunotherapeutic compound. It relates to a method for determining a suitable dose for administration.本発明は、免疫療法化合物の投与に応答した免疫系の反応における変動等、個々の対象内の天然の変動により、その有効性及び毒性が個体間で同じ用量で変動し得る、免疫療法化合物の投与に適した用量を決定するための方法に関する。