# Aspen completes ASPIRO dosing with a frozen, ready-to-inject cell product ahead of phase 3

Canonical page: https://technooptimist.io/stories/aspen-completes-aspiro-dosing-with-a-frozen-ready-to-inject-cell-cc8e4ff2
Date: 9 Jul 2026
About: [Aspen Neuroscience](https://technooptimist.io/companies/aspen-neuroscience.md) · [Sasineprocel (ANPD001)](https://technooptimist.io/biotech/sasineprocel.md)
Original source: https://www.pharmanow.live/latest-news/aspen-neuroscience-aspiro-cohort-3-4-dosing-sasineprocel-phase-3

Aspen finished dosing cohorts 3 and 4 of its phase 1/2a trial, bringing the total to 15 patients. These were the first patients to receive a cryopreserved thaw-and-inject formulation instead of freshly prepared cells, a change needed to ship personalised cells to many surgical centres. The company is assembling its phase 3 package.

## Key facts

- Dosing complete as of 30 Jun 2026; 15 patients treated.
- Frozen formulation judged preclinically comparable to the fresh cells of cohorts 1–2.
- Phase 3 start timing depends on regulator feedback.

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