PMID- 38413540 OWN - NLM STAT- MEDLINE DCOM- 20240321 LR - 20240401 IS - 1526-4610 (Electronic) IS - 0017-8748 (Linking) VI - 64 IP - 3 DP - 2024 Mar TI - A randomized, open-label, 5-period crossover study evaluating the pharmacokinetics and safety of a single dose of intranasal dihydroergotamine (DHE) powder (STS101), intramuscular DHE mesylate, and liquid nasal spray DHE in healthy adults. PG - 266-275 LID - 10.1111/head.14685 [doi] AB - OBJECTIVE: To compare the safety and pharmacokinetics (PK) of dihydroergotamine (DHE) after administration of intranasal DHE powder (STS101), liquid nasal spray (LNS) DHE mesylate, and intramuscular (IM) DHE mesylate injection in healthy participants. BACKGROUND: DHE is an effective acute migraine treatment; however, self-administration difficulties have prevented its broader role in the management of migraine. METHODS: This randomized, active-controlled, five-period crossover study was conducted over 5 weeks separated by 1-week washout periods. Three STS101 dosage strengths (5.2, 7.0, 8.6 mg), and one dose each of LNS DHE 2.0 mg, and IM DHE 1.0 mg, were administered to 36 healthy participants. Liquid chromatography, tandem mass spectrometry was used to determine DHE (including its 8'OH-DHE metabolite) plasma levels and to calculate PK parameters (C(max) , T(max) , AUC(0-2h) , AUC(0-last) , AUC(0-inf) , and t(1/2) ). Safety was evaluated by monitoring adverse events (AEs), vital signs, electrocardiograms, nasal examinations, and laboratory parameters. RESULTS: Thirty-six participants (mean age 36 years; 19% Hispanic Black and 81% Hispanic White) were enrolled. DHE plasma concentrations rose rapidly after STS101 5.2, 7.0, and 8.6 mg and IM DHE injection, with mean concentrations greater than 2000 pg/mL for all STS101 dose strengths at 20 min. All STS101 dose strengths showed approximately 3-fold higher C(max) , AUC(0-2h) , and AUC(0-inf) , than the LNS DHE. The mean AUC(0-inf) of STS101 7.0 and 8.6 mg were comparable to IM DHE (12,600 and 13,200 vs. 13,400 h x pg/mL). All STS101 dose strengths showed substantially lower variability (CV%) compared to LNS DHE for C(max) (35%-41% vs. 87%), and AUC(0-inf) (37%-46% vs. 65%). STS101 was well tolerated, and all treatment-emergent AEs were mild and transient. CONCLUSION: STS101 showed rapid absorption and was well tolerated with mild and transient treatment-emergent AEs. Achieving effective DHE plasma concentrations within 10 min, STS101 displayed a favorable PK profile relative to the LNS with higher C(max) , AUC(0-2h) , and AUC(0inf) , and with greater response consistency. The AUC(0-inf) was comparable to IM DHE. CI - (c) 2024 Satsuma Pharmaceuticals. Headache: The Journal of Head and Face Pain published by Wiley Periodicals LLC on behalf of American Headache Society. FAU - Lipton, Richard B AU - Lipton RB AUID- ORCID: 0000-0003-2652-2897 AD - Department of Neurology Montefiore Headache Center, Albert Einstein College of Medicine, Bronx, New York, USA. FAU - Albrecht, Detlef AU - Albrecht D AD - Satsuma Pharmaceuticals Inc., Durham, North Carolina, USA. FAU - Bermudez, Maria AU - Bermudez M AD - Quotient Sciences, Miami, Florida, USA. FAU - Hu, Jerry AU - Hu J AD - Allucent, Gary, North Carolina, USA. FAU - Hussey, Elizabeth AU - Hussey E AD - Allucent, Gary, North Carolina, USA. FAU - Levy, Jeff AU - Levy J AD - Quotient Sciences, Miami, Florida, USA. LA - eng GR - Satsuma Pharmaceuticals, Inc/ PT - Journal Article PT - Randomized Controlled Trial DEP - 20240227 PL - United States TA - Headache JT - Headache JID - 2985091R RN - 436O5HM03C (Dihydroergotamine) RN - 0 (Mesylates) RN - 0 (Nasal Sprays) RN - 0 (Powders) SB - IM MH - Adult MH - Humans MH - Cross-Over Studies MH - *Dihydroergotamine MH - *Mesylates/adverse effects MH - *Migraine Disorders/drug therapy MH - Nasal Sprays MH - Powders OTO - NOTNLM OT - DHE OT - dihydroergotamine mesylate OT - intranasal OT - migraine OT - pharmacokinetics EDAT- 2024/02/28 00:43 MHDA- 2024/03/21 12:42 CRDT- 2024/02/27 23:19 PHST- 2023/12/19 00:00 [revised] PHST- 2023/10/18 00:00 [received] PHST- 2023/12/21 00:00 [accepted] PHST- 2024/03/21 12:42 [medline] PHST- 2024/02/28 00:43 [pubmed] PHST- 2024/02/27 23:19 [entrez] AID - 10.1111/head.14685 [doi] PST - ppublish SO - Headache. 2024 Mar;64(3):266-275. doi: 10.1111/head.14685. Epub 2024 Feb 27.