De Novo Missense Variants: Definition, Impact, and Significance

De novo missense variants are genetic mutations that occur in a single individual and are not inherited from either parent. These mutations result in a change in a single DNA base pair, which leads to the substitution of one amino acid for another in the resulting protein. Missense variants can affect protein structure and function, and can contribute to the development of genetic disorders and diseases. De novo missense variants are particularly important in the study of rare diseases, as they can help identify the genetic basis of a condition and provide insights into its underlying mechanisms.