PMID- 24708176 OWN - NLM STAT- MEDLINE DCOM- 20150223 LR - 20181202 IS - 1941-837X (Electronic) IS - 1369-6998 (Linking) VI - 17 IP - 7 DP - 2014 Jul TI - Cost-effectiveness of metformin plus vildagliptin compared with metformin plus sulphonylurea for the treatment of patients with type 2 diabetes mellitus: a Portuguese healthcare system perspective. PG - 499-507 LID - 10.3111/13696998.2014.912986 [doi] AB - OBJECTIVE: To evaluate the cost-effectiveness of vildagliptin plus metformin vs generic sulphonylurea plus metformin in patients with type 2 diabetes mellitus, not controlled with metformin, from a Portuguese healthcare system perspective. METHODS: A cost-effectiveness model was constructed using risk equations from the UK Prospective Diabetes Study Outcomes Model with a 10,000-patient cohort and a lifetime horizon. The model predicted microvascular and macrovascular complications and mortality in yearly cycles. Patients entered the model as metformin monotherapy failures and switched to alternative treatments (metformin plus basal-bolus insulin and subsequently metformin plus intensive insulin) when glycated hemoglobin A1c >7.5% was reached. Baseline patient characteristics and clinical variables were derived from a Portuguese epidemiological study. Cost estimates were based on direct medical costs only. One-way and probabilistic sensitivity analyses were conducted to test the robustness of the model. RESULTS: There were fewer non-fatal diabetes-related adverse events (AEs) in patients treated with metformin plus vildagliptin compared with patients treated with metformin plus sulphonylurea (6752 vs 6815). Addition of vildagliptin compared with sulphonylurea led to increased drug acquisition costs but reduced costs of AEs, managing morbidities, and monitoring patients. Treatment with metformin plus vildagliptin yielded a mean per-patient gain of 0.1279 quality-adjusted life years (QALYs) and a mean per-patient increase in total cost of euro1161, giving an incremental cost-effectiveness ratio (ICER) of euro9072 per QALY. Univariate analyses showed that ICER values were robust and ranged from euro4195 to euro16,052 per QALY when different parameters were varied. LIMITATIONS: The model excluded several diabetes-related morbidities, such as peripheral neuropathy and ulceration, and did not model second events. Patients were presumed to enter the model with no diabetes-related complications. CONCLUSION: Treatment with metformin plus vildagliptin compared with metformin plus sulphonylurea is expected to result in a lower incidence of diabetes-related AEs and to be a cost-effective treatment strategy. FAU - Viriato, Daniel AU - Viriato D AD - Novartis Farma SA , Porto Salvo , Portugal. FAU - Calado, Frederico AU - Calado F FAU - Gruenberger, Jean-Bernard AU - Gruenberger JB FAU - Ong, Siew Hwa AU - Ong SH FAU - Carvalho, Davide AU - Carvalho D FAU - Silva-Nunes, Jose AU - Silva-Nunes J FAU - Johal, Sukhvinder AU - Johal S FAU - Viana, Ricardo AU - Viana R LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140423 PL - England TA - J Med Econ JT - Journal of medical economics JID - 9892255 RN - 0 (Dipeptidyl-Peptidase IV Inhibitors) RN - 0 (Hypoglycemic Agents) RN - 0 (Nitriles) RN - 0 (Pyrrolidines) RN - 0 (Sulfonylurea Compounds) RN - 9100L32L2N (Metformin) RN - I6B4B2U96P (Vildagliptin) RN - PJY633525U (Adamantane) SB - IM MH - Adamantane/administration & dosage/*analogs & derivatives/economics MH - Computer Simulation MH - Cost-Benefit Analysis MH - Diabetes Complications/*economics/prevention & control MH - Diabetes Mellitus, Type 2/complications/*drug therapy/*economics MH - Dipeptidyl-Peptidase IV Inhibitors/administration & dosage/economics MH - Drug Therapy, Combination/economics MH - Female MH - Humans MH - Hypoglycemic Agents/administration & dosage/economics MH - Male MH - Metformin/administration & dosage/*economics/therapeutic use MH - Middle Aged MH - Models, Economic MH - Nitriles/administration & dosage/*economics MH - Portugal MH - Prospective Studies MH - Pyrrolidines/administration & dosage/*economics MH - Quality-Adjusted Life Years MH - Risk Factors MH - Sulfonylurea Compounds/administration & dosage/*economics MH - Vildagliptin OTO - NOTNLM OT - Cost-effectiveness OT - Diabetes mellitus OT - Metformin OT - Portugal OT - Sulphonylurea OT - Vildagliptin EDAT- 2014/04/09 06:00 MHDA- 2015/02/24 06:00 CRDT- 2014/04/09 06:00 PHST- 2014/04/09 06:00 [entrez] PHST- 2014/04/09 06:00 [pubmed] PHST- 2015/02/24 06:00 [medline] AID - 10.3111/13696998.2014.912986 [doi] PST - ppublish SO - J Med Econ. 2014 Jul;17(7):499-507. doi: 10.3111/13696998.2014.912986. Epub 2014 Apr 23.