Gene testing
genetic testing, genetic screening

Gene therapy
An experimental procedure aimed at replacing, manipulating, or supplementing nonfunctional or misfunctioning genes with healthy genes. See also: gene, inherit, somatic cell gene therapy, germline germ therapy. 2. Treating disease by replacing, manipulating, or supplementing nonfunctional genes

Gene transfer
Incorporation of new DNA into and organism’s cells, usually by a vector such as a modified virus. Used in gene therapy See also: mutation, gene therapy, vector.