PMID- 33866774 OWN - NLM STAT- MEDLINE DCOM- 20220308 LR - 20240215 IS - 2233-6087 (Electronic) IS - 2233-6079 (Print) IS - 2233-6079 (Linking) VI - 46 IP - 1 DP - 2022 Jan TI - Increasing Age Associated with Higher Dipeptidyl Peptidase-4 Inhibition Rate Is a Predictive Factor for Efficacy of Dipeptidyl Peptidase-4 Inhibitors. PG - 63-70 LID - 10.4093/dmj.2020.0253 [doi] AB - BACKGROUND: It is not known which type 2 diabetes mellitus (T2DM) patients would most benefit from dipeptidyl peptidase-4 (DPP-4) inhibitor treatment. We aimed to investigate the predictors of response to DPP-4 inhibitors considering degree of DPP-4 inhibition. METHODS: This study is a post hoc analysis of a 24-week, randomized, double-blind, phase III trial that compared the efficacy and safety of a DPP-4 inhibitor (gemigliptin vs. sitagliptin) in patients with T2DM. Subjects were classified into tertiles of T1 <65.26%, T2=65.26%-76.35%, and T3 >/=76.35% by DPP-4 inhibition. We analyzed the change from baseline in glycosylated hemoglobin (HbA1c) according to DPP-4 inhibition with multiple linear regression adjusting for age, ethnicity, body mass index, baseline HbA1c, and DPP-4 activity at baseline. RESULTS: The mean age was greater in the high tertile group compared with the low tertile group (T1: 49.8+/-8.3 vs. T2: 53.1+/-10.5 vs. T3: 55.3+/-9.5, P<0.001) of DPP-4 inhibition. Although HbA1c at baseline was not different among tertiles of DPP-4 inhibition (P=0.398), HbA1c after 24-week treatment was lower in the higher tertile compares to the lower tertile (T1: 7.30%+/-0.88% vs. T2: 7.12%+/-0.78% vs. T3: 7.00%+/-0.78%, P=0.021). In multiple regression analysis, DPP-4 enzyme inhibition rate was not a significant determent for HbA1c reduction due to age. In subgroup analysis by tertile of DPP-4 inhibition, age was the only significant predictor and only in the highest tertile (R2=0.281, B=-0.014, P=0.024). CONCLUSION: This study showed that HbA1c reduction by DPP-4 inhibitor was associated with increasing age, and this association was linked with higher DPP-4 inhibition. FAU - Hong, Sangmo AU - Hong S AD - Department of Internal Medicine, Hanyang University Guri Hospital, Hanyang University College of Medicine, Seoul, Korea. FAU - Jung, Chang Hee AU - Jung CH AD - Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea. FAU - Han, Song AU - Han S AD - Life Sciences, LG Chem Ltd., Seoul, Korea. FAU - Park, Cheol-Young AU - Park CY AD - Department of Internal Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea. LA - eng PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't DEP - 20210419 PL - Korea (South) TA - Diabetes Metab J JT - Diabetes & metabolism journal JID - 101556588 RN - 0 (Blood Glucose) RN - 0 (Dipeptidyl-Peptidase IV Inhibitors) RN - 0 (Glycated Hemoglobin A) RN - 0 (Hypoglycemic Agents) SB - IM MH - Blood Glucose MH - *Diabetes Mellitus, Type 2/complications/drug therapy MH - *Dipeptidyl-Peptidase IV Inhibitors/pharmacology/therapeutic use MH - Glycated Hemoglobin/analysis MH - Humans MH - Hypoglycemic Agents/therapeutic use PMC - PMC8831807 OTO - NOTNLM OT - Aged OT - Diabetes mellitus OT - Dipeptidyl-peptidase IV inhibitors OT - Glycated hemoglobin A COIS- CONFLICTS OF INTEREST Sangmo Hong, Chang Hee Jung, and Cheol-Young Park had no potential conflict of interest relevant to this article. Song Han was hired by LG Chem Ltd., Seoul. EDAT- 2021/04/20 06:00 MHDA- 2022/03/09 06:00 PMCR- 2022/01/01 CRDT- 2021/04/19 03:30 PHST- 2020/10/23 00:00 [received] PHST- 2021/01/26 00:00 [accepted] PHST- 2021/04/20 06:00 [pubmed] PHST- 2022/03/09 06:00 [medline] PHST- 2021/04/19 03:30 [entrez] PHST- 2022/01/01 00:00 [pmc-release] AID - dmj.2020.0253 [pii] AID - dmj-2020-0253 [pii] AID - 10.4093/dmj.2020.0253 [doi] PST - ppublish SO - Diabetes Metab J. 2022 Jan;46(1):63-70. doi: 10.4093/dmj.2020.0253. Epub 2021 Apr 19.