Circio Holding ASA (“Circio” or “the Company”) published, on the 28th of October 2026, the materials for its oral and two poster presentations at the European Society of Gene and Cell Therapy (ESGCT) Annual Congress in Hamburg. The materials present a new heart-optimized AAV9 circVec 5.2 design reaching approx. 200x higher gene expression than conventional mRNA-based AAV9, with approx. 95% of the expression occurring in the heart (25%) and less than 1% in the liver (9%).

Circio Holding ASA (“Circio” or “the Company”) published, on the 28th of October 2026, the materials for its oral and two poster presentations at the European Society of Gene and Cell Therapy (ESGCT) Annual Congress in Hamburg. The materials present a new heart-optimized AAV9 circVec 5.2 design reaching approx. 200x higher gene expression than conventional mRNA-based AAV9, with approx. 95% of the expression occurring in the heart (25%) and less than 1% in the liver (9%).

In summary, Analyst Group views the ESGCT materials as adding precision to the platform’s characterization alongside the step up in heart expression, with the cardiac specificity the most important addition. What remains open is whether the additional protein makes diseased animals better, which the in vivo heart disease-model studies are designed to establish. Circio expects those studies to begin in Q1-27, with read-outs during the year, in line with the six-to-twelve-month guidance given in September, while the R&D webcast at the end of November, presenting in vivo heart and eye results expected to complete during the month, is the nearer-term test.

Read Analyst Group’s comment here

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