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RG, a 6-year-old child, has been diagnosed with Acute Lymphoblastic Leukemia (ALL). The standard treatment is 6-mercaptopurine (Purinethol), an inexpensive drug that inhibits proliferation and is effective against rapidly proliferating cells like cancer cells. The compound is an antimetabolite that interferes with DNA synthesis. However, about 10% of patients experience life-threatening toxicities. 6-mercaptopurine is metabolized and detoxified by the enzyme thiopurine-S-methyltransferase (TPMT). The most common SNPS correlated with low enzymatic activity are TPMT*3A, *3B, *3C and *2. They cause enhanced degradation of the enzyme. Genotyping reveals that RG has the following genotype: TPMT*3A/*2. Questions: A patient with TPMT*1/*1 should receive what kind of dose? Reduced dose Standard dose Increased dose

RG, a 6-year-old child, has been diagnosed with Acute Lymphoblastic Leukemia (ALL). The standard treatment is 6-mercaptopurine (Purinethol), an inexpensive drug that inhibits proliferation and is effective against rapidly proliferating cells like cancer cells. The compound is an antimetabolite that interferes with DNA synthesis. However, about 10% of patients experience life-threatening toxicities. 6-mercaptopurine is metabolized and detoxified by the enzyme thiopurine-S-methyltransferase (TPMT). The most common SNPS correlated with low enzymatic activity are TPMT*3A, *3B, *3C and *2. They cause enhanced degradation of the enzyme. Genotyping reveals that RG has the following genotype: TPMT*3A/*2. Questions: A patient with TPMT*1/*1 should receive what kind of dose? Reduced dose Standard dose Increased dose

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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RG, a 6-year-old child, has been diagnosed with Acute Lymphoblastic Leukemia (ALL). The standard treatment is 6-mercaptopurine (Purinethol), an inexpensive drug that inhibits proliferation and is effective against rapidly proliferating cells like cancer cells. The compound is an antimetabolite that interferes with DNA synthesis. However, about 10% of patients experience life-threatening toxicities. 6-mercaptopurine is metabolized and detoxified by the enzyme thiopurine-S-methyltransferase (TPMT). The most common SNPS correlated with low enzymatic activity are TPMT*3A, *3B, *3C and *2. They cause enhanced degradation of the enzyme. Genotyping reveals that RG has the following genotype: TPMT*3A/*2. Questions: A patient with TPMT*l/*1 should receive what kind of dose? Reduced dose Standard dose Increased dose
Transcribed Image Text:RG, a 6-year-old child, has been diagnosed with Acute Lymphoblastic Leukemia (ALL). The standard treatment is 6-mercaptopurine (Purinethol), an inexpensive drug that inhibits proliferation and is effective against rapidly proliferating cells like cancer cells. The compound is an antimetabolite that interferes with DNA synthesis. However, about 10% of patients experience life-threatening toxicities. 6-mercaptopurine is metabolized and detoxified by the enzyme thiopurine-S-methyltransferase (TPMT). The most common SNPS correlated with low enzymatic activity are TPMT*3A, *3B, *3C and *2. They cause enhanced degradation of the enzyme. Genotyping reveals that RG has the following genotype: TPMT*3A/*2. Questions: A patient with TPMT*l/*1 should receive what kind of dose? Reduced dose Standard dose Increased dose
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