8-K current report · filed Sep 29, 2026

Cartesian Therapeutics, Inc. (RNAC) 8-K Current Report: September 29, 2026

Item 7.01Item 8.01RNAC overview

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Cartesian Therapeutics, Inc. (RNAC) filed an 8-K current report with the SEC on September 29, 2026 reporting Item 7.01 (Regulation FD Disclosure), Item 8.01 (Other Events). Additional retreatment data from Phase 2 Descartes-08 trial in myasthenia gravis patients.

Cartesian Therapeutics, Inc. 8-K event analysis

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Item 7.01 · Regulation FD Disclosure

  • Additional retreatment data from Phase 2 Descartes-08 trial in myasthenia gravis patients
  • Press release dated September 29, 2026, contains the disclosed clinical results
  • Data update may influence Descartes-08 development outlook and investor assessment of therapeutic durability

Item 8.01 · Other Events

  • Five MG patients retreated after symptom recurrence at median 16.6 months following initial Descartes-08 treatment
  • Month 12 post-retreatment outcomes: MG-ADL reduction 6.6 points and MGC reduction 15 points from baseline
  • All patients achieved clinically meaningful MGC and MG-ADL improvements; four sustained MG-ADL benefit through Month 12
  • Retreatment showed no serious adverse events and no cytokine release syndrome, neurotoxicity, cytopenias, or hypogammaglobulinemia
  • Findings support potential repeat dosing, strengthening Descartes-08’s durability and retreatment profile in MGેણ

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