As a nurse who works with those with a hereditary predisposition for developing cancer, it's encouraging to see the clinical applications of information gleaned from the Human Genome Project ("Medication Selection by Genotype," May).

I would like to note a particularly helpful resource. The International Society of Nurses in Genetics (ISONG) is a nursing specialty organization dedicated to fostering the scientific and professional growth of nurses in human genetics, with a goal of using that knowledge when caring for patients and families. More specific information is available at http://www.isong.org. ISONG educates nurses working in genetics, promotes the integration of genetics into nursing care, and advances nursing research into genetics. ISONG also promotes the credentialing of nurses with expertise in genetics, based on a rigorous review of the evidence.

Suzanne M. Mahon, DNSc, RN, AOCN, APNG

St. Louis, MO