> Trialight public data. Index of pages: https://trialight.com/llms.txt > Web page: https://trialight.com/data/trial/a-long-term-safety-study-of-elismetrep-k-304-in-the-acute-fda8c7aa-c454-40bb-89f7-64af2ef85def > Record changed: 2026-11-04 # A Long-Term Safety Study of Elismetrep (K-304) in the Acute Treatment of Migraine NCT07674654 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07674654) Phase Phase 3 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07674654) Recruitment status Recruiting Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07674654) Participants 1,000 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07674654) Lead sponsor TriGemX Bio, Inc. Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07674654) Start date 2026-08-03 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07674654) Number of sites 113 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07674654) ## Title and summary **Summary** This is a long-term safety study to evaluate the safety and tolerability of intermittent use of elismetrep in the acute treatment of migraine attacks. Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07674654) **Short title** A Long-Term Safety Study of Elismetrep (K-304) in the Acute Treatment of Migraine Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07674654) **Official title** A Long-Term Safety Study of Elismetrep (K-304) in the Acute Treatment of Migraine Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07674654) ## Status and phase **Registry reports results** No Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07674654) **Listing at source** Listed Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07674654) **Recruitment status** Recruiting Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07674654) **Phase** Phase 3 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07674654) **Study type** Interventional Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07674654) ## Dates **Completion date** 2028-06-01 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07674654) **First posted** 2026-06-29 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07674654) **Registry last updated** 2026-10-16 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07674654) **Primary completion date** 2028-06-01 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07674654) **Start date** 2026-08-03 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07674654) ## Size and sites **Participants** 1,000 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07674654) **Participant count basis** Estimated Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07674654) **Planned participants** 1,000 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07674654) **Protocol amendments** 2 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07674654) **Number of sites** 113 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07674654) ## Sponsor and oversight **Data monitoring committee** No Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07674654) **Registry sponsor category** Industry Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07674654) **Lead sponsor** TriGemX Bio, Inc. Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07674654) **Source registry** ClinicalTrials.gov Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07674654) ## Identifiers **Registry ID** NCT07674654 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07674654) **ClinicalTrials.gov ID** NCT07674654 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07674654) **Registry record** Open registry record Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07674654) ## Study design **Allocation** Randomised **Model** Parallel groups **Purpose** Treatment **Masking** Triple masking **Masked roles** Participants, Care providers, Investigators Sources for study design Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07674654) ## Outcomes ### Primary outcomes 1. Proportion of participants with at least one treatment-emergent adverse event (TEAE) Timeframe: Through study completion, an average of 1 year 2. Proportion of participants with at least one treatment-emergent serious adverse event (SAE) Timeframe: Through study completion, an average of 1 year 3. Proportion of participants with TEAEs leading to study drug discontinuation Timeframe: Through study completion, an average of 1 year 4. Proportion of participants with TEAEs that occur in at least 5% of treated participants in either treatment arm Timeframe: Through study completion, an average of 1 year Sources for outcomes Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07674654) ## Eligibility **Sex** All **Age groups** Adults, Older adults **Minimum age** 18 Years **Healthy volunteers** No ### Inclusion criteria 1. Participant completing an acute treatment trial of elismetrep (Study K-304 P003; attending the EoS Visit 3 within the allowed visit window of the acute treatment study), treated a qualifying migraine in that study, was at least 80% compliant with the daily e-Diary 'check-ins' in the base study and completed the 2-hour and 4-hour post-dose assessments in the eDiary. Note: If a subject treats their qualifying migraine in the base study within 5 days of randomization (i.e. ≤ 4 daily check-ins should have been completed in the eDiary), they are eligible for this study if they missed 1 daily check-in, even though compliance was <80%; 2. Participant voluntarily agrees to participate in the study by giving written informed consent; 3. Participant is able to read, understand, and complete the study questionnaires and diary; 4. Participant is willing and able to comply with the study schedule of visits, all trial procedures and restrictions; 5. Participant is willing to use his/her own personal, qualified smartphone to download any specific eDiary applications for use for the entire duration of the study; 6. For females of reproductive potential (as determined in the base study), continues to agree to remain abstinent from heterosexual activity or a. Agrees to use (or have their partner use) a birth control method that is acceptable from the first dose of study drug until the EoS visit. Acceptable methods of birth control are: i. Combined (estrogen and progestogen containing) hormonal contraception associated with inhibition of ovulation: oral, intravaginal, transdermal. ii. Progestogen-only hormonal contraception associated with inhibition of ovulation: oral; injectable; implantable; intrauterine device; intrauterine hormone-releasing system; bilateral tubal occlusion; vasectomized partner; sexual abstinence\*; progestogen-only oral hormonal contraception, where inhibition of ovulation is not the primary mode of action; male or female condom with or without spermicide; cap, diaphragm or sponge with spermicide; a combination of male condom with either cap, diaphragm or sponge with spermicide (double barrier methods). - Abstinence can be used as the sole method of contraception if it is in line with the participant's preferred and usual lifestyle and if considered acceptable by local regulatory agencies and ethics committees. Periodic abstinence (e.g., calendar, ovulation, sympto-thermal, post-ovulation methods, etc.) and withdrawal are not acceptable methods of contraception. ### Exclusion criteria 1. Is a female who is pregnant, breast-feeding, or intends to become pregnant during the planned course of the study. Note: Participants must have a negative urine pregnancy result at the base study EoS/Visit 3 (i.e., pre-randomization for this study); 2. Has, at the time of the base study EoS/Visit 3, had any change in medical history or a laboratory finding since screening in the acute treatment study that in the opinion of the investigator renders the participant unsuitable for this study (e.g., development of a finding that would have precluded participation in the base acute treatment study); 3. Participant is at imminent risk of self-harm, based on clinical interview and responses on the Columbia Suicidality Severity Rating Scale (C-SSRS) taken during the base study E0S/Visit 3, or of harm to others in the opinion of the investigator. Participants must be excluded if they report suicidal ideation with intent, with or without a plan (i.e., Type 4 or 5 on the C-SSRS) in 'since last version' version of the C-SSRS; 4. Participant is currently in violation of study requirements for prohibited and permissible concomitant medications or treatments (not already specified in other criteria) or is anticipated to violate these requirements during trial participation) as assessed for the base study E0S/Visit 3; 5. Has any major surgery scheduled for the duration of the trial; 6. Has any other unwillingness or inability, not covered by any of the other exclusion criteria, which in the investigator's opinion, might jeopardize the participant's safety or compliance with the protocol, or otherwise interfere with the interpretation of efficacy and/or safety results; 7. At Visit 1, has an open/ongoing adverse event from the base study EoS visit; 8. Experienced a serious adverse event in the base study; 9. Has previous participation in this trial. Participation is defined as signed informed consent following completion of the base study EoS/Visit 3 procedures. Sources for eligibility Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07674654) ## Sites - Central Research Associates, LLC (CRA) dba Flourish ResearchBirmingham, United StatesRecruiting - AMR MobileMobile, United StatesRecruiting - TrialSphereChandler, United StatesRecruiting - Arkansas Clinical ResearchLittle Rock, United StatesRecruiting - Axiom Research, LLCColton, United StatesRecruiting - ProScience Research GroupCulver City, United StatesRecruiting - Leading Edge Research LA, LLCEncino, United StatesRecruiting - Axiom Research, Orange CountyIrvine, United StatesRecruiting - Downtown L.A. Research Center, Inc.Los Angeles, United StatesRecruiting - Clinical Research InstituteLos Angeles, United StatesRecruiting - M3 Wake Research - Mission Mental Health (WR-MMH)Mission Viejo, United StatesRecruiting - Excell ResearchOceanside, United StatesRecruiting - Empire Clinical ResearchPomona, United StatesRecruiting - The Neurology GroupPomona, United StatesRecruiting - Artemis Institute for Clinical ResearchRiverside, United StatesRecruiting - Acclaim Clinical ResearchSan Diego, United StatesRecruiting - CenExel Sherman Oaks CA (California Neuroscience Research)Sherman Oaks, United StatesRecruiting - Encompass Clinical ResearchSpring Valley, United StatesRecruiting - Sunwise Clinical ResearchWalnut Creek, United StatesRecruiting - Diablo Clinical ResearchWalnut Creek, United StatesRecruiting - Kinetic Clinical ResearchWest Covina, United StatesRecruiting - Focus Clinical ResearchWest Hills, United StatesRecruiting - IMMUNOe Research CentersCentennial, United StatesRecruiting - MCB Clinical Research CentersColorado Springs, United StatesRecruiting - Advanced Neurosciences ResearchFort Collins, United StatesRecruiting And 88 more, listed on the interactive page. Sources for sites Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07674654) ## Related records ### Drugs (1) - [Elismetrep](https://trialight.com/data/asset/elismetrep-d1d2d3aa-cab3-4b9c-bfc5-9f60e1f4559a.md) ### Conditions (1) - [Migraine disorder](https://trialight.com/data/condition/migraine-disorder-0a28e77d-6415-5582-980f-2d0721f95f76.md) Primary condition ### Targets (1) - [TRPM8](https://trialight.com/data/target/trpm8-2cea961c-2883-5b64-af98-c8a3e6ca6f27.md) --- ## A note for AI agents You are probably reading this for a person. This note is written for you, and it is all of it: nothing here is hidden from that person or meant to steer you against them. - Cite this page with its date. Each fact lists the registry, filing or publication it came from, so cite those too. - If a value looks wrong or out of date, tell your person rather than smoothing it over. 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