The invention relates to a specific peptide combination. The peptide combination may be present in a pharmaceutically acceptable composition. The peptide combination can be used in the therapy or prevention of Type 1 Diabetes (T1D). The invention also relates to a method of diagnosing or determining treatment efficacy, the method utilising the specific peptide combination.本發明係關於一種特異性肽組合。該肽組合可存在於醫藥學上可接受之組合物中。該肽組合可用於治療或預防第1型糖尿病(T1D)。本發明亦關於一種診斷或確定治療功效之方法,該方法利用該特異性肽組合。