Abstract
ABSTRACT Objectives This study is designed in order to compare the efficacy and safety of recombinant human growth hormone (rhGH) with the reference brand. Methods According to the inclusion criteria, 85 people in 13 Iranian centers were randomly selected to receive biosimilar Somatropin (Somatin®) (44 people) and reference Somatropin (Norditropin®) (41 people) at a dose of 35 µg/kg/d, seven days/week for 12 months. The primary outcomes included height velocity (HV) was measured during 12 months of treatment. Results The two intervention groups’ Height changes were similar. The mean HV was 10.96 cm/year in the biosimilar group and 10.05 cm/year in the reference groups after 12 months. Estimates of the lower bounds of 95% CI for mean height differences in the biosimilar intervention group compared to the reference intervention group did not exceed the 2 cm margin. Therefore, the non-inferiority of biosimilar intervention compared to the brand product is verified. Common ADRs in both groups were nausea in two patients (2.4%), diarrhea in two patients (2.4%), increased body temperature in one patient (1.2%), and headache in one patient (1.2%). Conclusions The finding of this study indicated that Somatin® and Norditropin® have comparable efficacy and safety profiles. Clinical trial registration www.IRCT.irIRCT20171122037571N1.
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