PMID- 31943195 OWN - NLM STAT- MEDLINE DCOM- 20210729 LR - 20210729 IS - 1526-4610 (Electronic) IS - 0017-8748 (Print) IS - 0017-8748 (Linking) VI - 60 IP - 3 DP - 2020 Mar TI - Issues Impacting Adverse Event Frequency and Severity: Differences Between Randomized Phase 2 and Phase 3 Clinical Trials for Lasmiditan. PG - 576-588 LID - 10.1111/head.13731 [doi] AB - OBJECTIVE: We explore factors that may have contributed to differences in treatment-emergent adverse events in the phase 2 and phase 3 lasmiditan clinical trials. BACKGROUND: Phase 2 and phase 3 trials showed that the centrally penetrant 5-HT(1F) agonist, lasmiditan, was effective; higher frequency and severity of adverse events (AEs) were seen in phase 2. METHODS: This work represents a hybrid of a review of primary documents and study reports with additional post hoc analyses. Protocols, informed consents, data collection forms, and methodologies were reviewed. This information was supplemented by results from the clinical study reports and post hoc analyses of individual patient data from each trial. RESULTS: For lasmiditan 100 and 200 mg, in phase 2, the incidence of >/=1 AE was 72-86% (26% severe), while in phase 3 was 36-43% (2% severe). The most common AEs in all studies were CNS-related. The phase 2 consent form was more descriptive of AEs than phase 3. In phase 2, patients recorded AEs and severity in a paper diary that warned about drowsiness and dizziness. In phase 3, patients recorded in electronic diaries whether they experienced unusual feelings after dosing with lasmiditan that they had not felt with a migraine before, and were contacted to determine if an AE had occurred. In phase 2, the AE Schwindel was variably translated from German as "vertigo" or "dizziness," while phase 3 vertigo cases were queried to ensure there was a sensation of rotation or movement. History of recurrent dizziness and/or vertigo was exclusionary in phase 3. CONCLUSIONS: This work illustrates how informed consent wording, AE collection methods, translation, exclusion criteria, and other factors may be important determinants for reporting of the frequency and severity of AEs in clinical trials. CI - (c) 2020 Eli Lilly and Company. Headache: The Journal of Head and Face Pain published by Wiley Periodicals, Inc., on behalf of American Headache Society. FAU - Kudrow, David AU - Kudrow D AD - California Medical Clinic for Headache, Santa Monica, CA, USA. AD - Neurology, David Geffen UCLA School of Medicine, Los Angeles, CA, USA. FAU - Krege, John H AU - Krege JH AD - Eli Lilly and Company, Indianapolis, IN, USA. FAU - Hundemer, Hans P AU - Hundemer HP AD - Eli Lilly and Company, Bad Homburg, Germany. FAU - Berg, Paul H AU - Berg PH AD - Eli Lilly and Company, Indianapolis, IN, USA. FAU - Khanna, Rashna AU - Khanna R AD - Eli Lilly and Company, Erl Wood, UK. FAU - Ossipov, Michael H AU - Ossipov MH AD - Syneos Health, Clinical Division, Raleigh, NC, USA. FAU - Pozo-Rosich, Patricia AU - Pozo-Rosich P AD - Headache & Craniofacial Pain Unit, Neurology Department, Hospital Universitari Vall d'Hebron, Barcelona, Spain. AD - Headache Research Group, VHIR, Universitat Autonoma de Barcelona, Barcelona, Spain. LA - eng GR - NA/Eli Lilly and Company/International PT - Comparative Study PT - Journal Article DEP - 20200113 PL - United States TA - Headache JT - Headache JID - 2985091R RN - 0 (Benzamides) RN - 0 (Piperidines) RN - 0 (Pyridines) RN - 0 (Serotonin Receptor Agonists) RN - 760I9WM792 (lasmiditan) SB - IM MH - Adult MH - Benzamides/administration & dosage/adverse effects/*pharmacology MH - *Clinical Trials, Phase II as Topic MH - *Clinical Trials, Phase III as Topic MH - *Drug-Related Side Effects and Adverse Reactions MH - Female MH - *Forms as Topic MH - Humans MH - *Informed Consent MH - Male MH - Middle Aged MH - Migraine Disorders/*drug therapy MH - *Patient Reported Outcome Measures MH - Piperidines/administration & dosage/adverse effects/*pharmacology MH - Pyridines/administration & dosage/adverse effects/*pharmacology MH - Serotonin Receptor Agonists/administration & dosage/adverse effects/*pharmacology MH - Translating PMC - PMC7064990 OTO - NOTNLM OT - adverse events OT - episodic migraine OT - lasmiditan OT - migraine headache OT - treatment-emergent adverse event EDAT- 2020/01/17 06:00 MHDA- 2021/07/30 06:00 PMCR- 2020/03/11 CRDT- 2020/01/17 06:00 PHST- 2019/11/14 00:00 [accepted] PHST- 2020/01/17 06:00 [pubmed] PHST- 2021/07/30 06:00 [medline] PHST- 2020/01/17 06:00 [entrez] PHST- 2020/03/11 00:00 [pmc-release] AID - HEAD13731 [pii] AID - 10.1111/head.13731 [doi] PST - ppublish SO - Headache. 2020 Mar;60(3):576-588. doi: 10.1111/head.13731. Epub 2020 Jan 13.