Bexicaserin (LP352) Open-Label Extension (OLE) Interim Analysis June 10, 2024 Exhibit 99.2

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Summary: Interim Analysis from Bexicaserin (LP352) OLE Study Overall OLE n=40 100% of PACIFIC completers continued into OLE (95.1% in OLE at 6-months) PACIFIC completers n=41(DS=3, LGS=20, DEE Other=18) Sustained response over an approximate 6-month treatment period Favorable safety and tolerability results observed PACIFIC (201 Study) Placebo participants: All successfully titrated up and entered maintenance phase of the OLE Motor seizure reduction consistent with bexicaserin efficacy observed in PACIFIC Global Phase 3 Program on track to initiate later this year Definitions: OLE=Open-label extension; DS=Dravet syndrome; LGS=Lennox-Gastaut syndrome; DEE=Developmental and Epileptic Encephalopathy *Percent change from PACIFIC Study baseline in frequency over treatment period of approximately 6 months in the OLE Study (LP352-202)

Bexicaserin (LP352) Median Observed Countable Motor Seizure Reduction in OLE PACIFIC Data Set OLE Month 1 Month 2 Month 3 Month 4 Month 5 Month 6 Open-Label Extension* (6-Month Treatment Period) 50% Reduction *Percent change from PACIFIC Study (LP352-201) baseline in monthly seizure frequency Transition to OLE dose

AE=adverse event; n=number of participants; SAE=serious AE; TEAE, treatment-emergent AE Safety Set includes all participants who were administered at least one dose of study medication (up to 12 months). Full Analysis Set includes all participants who complete titration and have at least 1 post-baseline seizure measurement during maintenance (up to 6 months) *Over 5% of participants Summary: Bexicaserin (LP352) Safety and Tolerability in the OLE Interim Analysis Overall (N = 41) Parameter n (%) Safety Set 41 (100) Full Analysis Set 40 (97.6) Overall (N = 41) Preferred Term* n (%) Upper respiratory tract infections 5 (12.2) COVID-19 3 (7.3) Pneumonia 3 (7.3) Sinusitis 3 (7.3) Seizure 3 (7.3) Decreased appetite 3 (7.3) SAEs in the overall group were comprised of pneumonia, pneumonia bacterial, change in seizure presentation, seizure, and agitation One participant discontinued from the study due to the adverse event of lethargy (2.4%) during the titration period One participant discontinued from the study by the withdrawal of consent (2.4%) during the first month of maintenance Favorable safety and tolerability results observed