What is Alpha-1 Antitrypsin Deficiency?
AATD is an inherited, genetic, autosomal co-dominant disorder caused by mutations in the SERPINA1 gene, with the most frequent deficient variants coming from the Z (Glu342Lys) and S alleles (Glu264Val). The presence of Z alleles results in misfolding and polymerization of the AAT, leading to over 95% of severe AATD patients being PIZZ.
About YOLT-202
YOLT-202 is an in vivo gene-editing therapy that corrects PiZ mutation to PiM for the treatment of AATD. Utilizing YolTech’s proprietary adenine base editor, YOLT-202 is engineered to achieve on-target editing with minimal bystander activity.
Latest News
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May 14, 2026
YolTech Therapeutics Announces FDA Regenerative Medicine Advanced Therapy (RMAT) Designation to YOLT-202 for the Treatment of Alpha-1 Antitrypsin Deficiency (AATD)Read More
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Mar 13, 2026
YolTech Therapeutics Receives FDA Clearance to Initiate Phase 2/3 Study of In Vivo Gene-Editing Therapy YOLT-202 in Alpha-1 Antitrypsin Deficiency (AATD)Read More
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Apr 28, 2025
YolTech Announces First Clinical Data from Ongoing Investigator-Initiated Trial of YOLT-101, An In-Vivo Base Editing Therapy for Familial HypercholesterolemiaRead More
