PubMed · 10789404
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C W Cremers. 2000. Hearing: cracking the code.. https://doi.org/10.1258/0022215001903816
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Dentinogenesis imperfecta (DGI) is characterized by discolored teeth with an opalescent sheen and dentin that fails to support enamel, causing it to easily chip. Two new studies show that DGI is associated with mutations in DSPP, a gene encoding dentin sialophosphoprotein that is processed into two proteins: dentin sialoprotein (DSP) and dentin phosphoprotein (DPP). These are key components of the dentin extracellular matrix (DECM). Notably, missense mutations in DSPP are also associated with progressive hearing loss.
High rates of false-positive neonatal screens for permanent childhood hearing impairment (PCHI) associated with raised hearing thresholds lead to unnecessary assessments of the baby, which may worry parents. False-positive rates need to be reduced, especially in view of the UK government's announcement that national neonatal screening will be introduced. We report screening criteria that give a six-fold reduction in false-positive rates.
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