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Taysha Gene Therapies Announces Completion of Dosing in REVEAL Pivotal Trial and Reports Longer-Term Clinical Data from Part A of REVEAL Phase 1/2 Trials Evaluating TSHA-102 for Rett Syndrome

$TSHAPress releaseJun 22, 2026, 8:00 AM ETRead the release

Taysha reported positive longer-term data from the REVEAL trials for TSHA-102, showing 100% of Part A patients (N=12) gained or regained at least one developmental milestone by 12 months post-treatment. Safety remained favorable with no treatment-related serious adverse events or dose-limiting toxicities observed across the 29 patients dosed in the REVEAL pivotal and Phase 1/2 trials.

Key figures

Drug Name
TSHA-102
Phase Of Trial
REVEAL Phase 1/2 and pivotal
Part a patients
12
Safety dlt count
0
Safety sae count
0
Total functional gains 12m
310
Milestone response rate 12m
100%
Pivotal trial patients dosed
17
Avg functional gains per patient
26

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