Use the Following Information to Answer the Next Few Questions

question 21

Multiple Choice

Use the following information to answer the next few questions.
Pharmacogenetics is an increasingly important discipline that uses genetic information to tailor the prescription of drug treatments to individuals. In the case of chemotherapy for breast cancer, for example, different patients need and/or respond to different treatments.
-Patients whose tumours are HER-2 positive respond to herceptin whereas other patients do not. Patients whose tumours have estrogen receptors will be best served if

• A)their estrogen receptors are blocked by using RNAi.
• B)their estrogen release is activated and/or elevated.
• C)the estrogen receptors are blocked by other molecules that can use the same receptors.
• D)they are given herceptin as well as estrogen.
• E)they are given a complete hysterectomy.