Genetic Tests One of the advances heralded by the mapping of the human genome moves a step closer this week. Differences in the way people respond to particular drugs is determined by the presence or absence of certain genes. NPR's Richard Harris reports that the identification of one of the genes responsible should make it possible to predict in advance who will benefit from a certain treatment and who will not.

Genetic Tests

Genetic Tests

Only Available in Archive Formats.

One of the advances heralded by the mapping of the human genome moves a step closer this week. Differences in the way people respond to particular drugs is determined by the presence or absence of certain genes. NPR's Richard Harris reports that the identification of one of the genes responsible should make it possible to predict in advance who will benefit from a certain treatment and who will not.