secwatch.observer — SEC 8-K summary ====================================== Issuer: Neurogene Inc. (NGNE) CIK: 0001404644 Form: 8-K Filed at: 2024-05-07T23:59:59+00:00 Accession: 0001404644-24-000049 Event type: other_material Sentiment: positive Materiality: 0.65 Item codes: 7.01, 9.01 LLM model: deepseek-v4-flash:cloud@v2 Neurogene's NGN-401 gene therapy well tolerated in first three Rett syndrome patients; no overexpression toxicity -------------------------------------------------------------------------------- - All three pediatric patients (ages 4-7) treated with single ICV dose show mild, transient AEs; no serious adverse events. - No signs of MeCP2 overexpression toxicity in any patient, including one with a mild variant predicted to retain residual MeCP2 expression. - Follow-up ranges from ~3 to ~9 months; data cut-off April 19, 2024. - Interim efficacy data from Cohort 1 expected in Q4 2024; additional data including Cohort 2 in H2 2025. - NGN-401 uses EXACT transgene regulation technology to limit overexpression risk. Source: EDGAR index: https://www.sec.gov/Archives/edgar/data/1404644/000140464424000049/0001404644-24-000049-index.htm Primary doc: https://www.sec.gov/Archives/edgar/data/1404644/000140464424000049/ngne-20240507.htm HTML page: https://secwatch.observer/filing/0001404644-24-000049 License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer