PMID- 31140620 OWN - NLM STAT- MEDLINE DCOM- 20200921 LR - 20210109 IS - 1365-2125 (Electronic) IS - 0306-5251 (Print) IS - 0306-5251 (Linking) VI - 85 IP - 9 DP - 2019 Sep TI - Adjusted indirect comparisons to assess bioequivalence between generic clopidogrel products in Serbia. PG - 2059-2065 LID - 10.1111/bcp.13997 [doi] AB - AIMS: Generic products can be regarded as therapeutically equivalent and switchable with the reference product. However, switchability between generics is unknown, as direct comparisons between generics are not performed. The aim of this study was to investigate the bioequivalence between generic clopidogrel products by means of adjusted indirect comparisons (AICs). METHODS: AICs were conducted to assess bioequivalence between 4 generic clopidogrel products that are authorised in Serbia. Generics are considered equivalent to the reference if the 90% confidence intervals (CIs) for the ratios test/reference of the maximum concentration (C(max) ) and area under the curve up to the last measurable concentration (AUC(0-t) ) fall within the acceptance range 80.00-125.00%. However, for AICs between generics, the Canadian acceptance criterion for C(max) was employed, where only the point estimate of C(max) needs to be within 80.00-125.00%. RESULTS: The 90% CIs of the AICs demonstrated bioequivalence within 80.00-125.00% for all AUC(0-t) comparisons. The point estimates of C(max) in all AICs were also within this range. CONCLUSION: This study demonstrates that the bioavailability of these 4 generic clopidogrel products authorised in Serbia is very similar. Despite the limited power of AICs, bioequivalence was demonstrated for all 90% CIs of AUC(0-t) and all 90% CIs of C(max) comparisons were within or very close to the acceptance range, being able to comply with the acceptance criterion employed in Canada for C(max) . Therefore, these 4 generic clopidogrel products authorised in Serbia can be considered switchable with each other in clinical practice based on the adjusted indirect comparisons. CI - (c) 2019 The British Pharmacological Society. FAU - Pejcic, Zorica AU - Pejcic Z AD - Medicines and Medical Devices Agency of Serbia, Belgrade, Republic of Serbia. AD - Department of Pharmacokinetics and Clinical Pharmacy, University of Belgrade - Faculty of Pharmacy, Belgrade, Republic of Serbia. FAU - Vucicevic, Katarina AU - Vucicevic K AUID- ORCID: 0000-0001-9676-5785 AD - Department of Pharmacokinetics and Clinical Pharmacy, University of Belgrade - Faculty of Pharmacy, Belgrade, Republic of Serbia. FAU - Garcia-Arieta, Alfredo AU - Garcia-Arieta A AUID- ORCID: 0000-0002-9702-6973 AD - Division of Pharmacology and Clinical Evaluation Department of Human Use Medicines, Spanish Agency for Medicines and Health Care Products, Madrid, Spain. FAU - Miljkovic, Branislava AU - Miljkovic B AD - Department of Pharmacokinetics and Clinical Pharmacy, University of Belgrade - Faculty of Pharmacy, Belgrade, Republic of Serbia. LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20190707 PL - England TA - Br J Clin Pharmacol JT - British journal of clinical pharmacology JID - 7503323 RN - 0 (Drugs, Generic) RN - 0 (Platelet Aggregation Inhibitors) RN - A74586SNO7 (Clopidogrel) SB - IM MH - Area Under Curve MH - Biological Availability MH - Clopidogrel/*pharmacokinetics MH - Drugs, Generic/*pharmacokinetics MH - Humans MH - Platelet Aggregation Inhibitors/*pharmacokinetics MH - Serbia MH - Therapeutic Equivalency PMC - PMC6710521 OTO - NOTNLM OT - bioequivalence OT - generic-generic substitution OT - interchangeability OT - switchability OT - therapeutic equivalence COIS- There are no competing interests to declare. EDAT- 2019/05/30 06:00 MHDA- 2020/09/22 06:00 PMCR- 2020/09/01 CRDT- 2019/05/30 06:00 PHST- 2019/01/09 00:00 [received] PHST- 2019/04/11 00:00 [revised] PHST- 2019/05/15 00:00 [accepted] PHST- 2019/05/30 06:00 [pubmed] PHST- 2020/09/22 06:00 [medline] PHST- 2019/05/30 06:00 [entrez] PHST- 2020/09/01 00:00 [pmc-release] AID - BCP13997 [pii] AID - 10.1111/bcp.13997 [doi] PST - ppublish SO - Br J Clin Pharmacol. 2019 Sep;85(9):2059-2065. doi: 10.1111/bcp.13997. Epub 2019 Jul 7.