ArticleMolecular therapy : the journal of the American Society of Gene Therapy2026
Gene supplementation with precise transgene expression rescues hearing loss in a mouse model with an Mpzl2 East Asian founder variant.
Article in Molecular therapy : the journal of the American Society of Gene Therapy, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
- Efficient Endolymphatic Sac-Directed Gene Delivery Using AAV8BP2 and Posterior Semicircular Canal Injection.International journal of molecular sciences · 2026Article
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8 authors.
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Abstract
Hearing loss is the most common sensory organ disorder, with genetic factors contributing substantially to the disease. Among the 87 genes responsible for autosomal recessive nonsyndromic hearing loss, mutations in MPZL2 have been frequently linked to mild-to-moderate autosomal recessive hearing loss (DFNB111). Here, we present multiple families whose hearing loss arose from biallelic mutations in the MPZL2 gene and found that the MPZL2 p.Q74∗ mutation may be a founder allele among East Asians. Furthermore, we generated an Mpzl2 p.Q74∗ knockin mouse model that exhibited autosomal recessive, progressive, ski-sloping hearing loss with Deiter's cell degeneration. Gene supplementation using AAV-DJ or AAV-PHP.eB to deliver human MPZL2 (hMPZL2) under control of the CAG promoter induced ototoxicity, whereas employing an alternative EF1α promoter with AAV-DJ (DJ-EF1α-hMPZL2) circumvented this issue, restoring long-term auditory function and Deiter's cell survival in Mpzl2
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