In this @-week , parallel-group , randomized , open-label trial , @ Japanese adults with type @ diabetes treated with insulin glargine and @ mg of sitagliptin were randomized into the following two arms : the single-bolus group , in which once-daily insulin glulisine was initiated at a main meal at a fifth ( i.e. , @ % ) the dose of insulin glargine , and the control group , in which the dose of sitagliptin was maximized to @ mg .