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Ch. 22 - Applications of Genetic Engineering and Biotechnology
Klug - Concepts of Genetics  12th Edition
Klug12th EditionConcepts of Genetics ISBN: 9780135564776Not the one you use?Change textbook
Chapter 22, Problem 15

The family of a sixth-grade boy in Palo Alto, California, was informed by school administrators that he would have to transfer out of his middle school because they believed his mutation of the CFTR gene, which does not produce any symptoms associated with cystic fibrosis, posed a risk to other students at the school who have cystic fibrosis. After missing 11 days of school, a settlement was reached to have the boy return to school. What ethical problems might you associate with this example?

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Understand the context: The CFTR gene mutation is associated with cystic fibrosis, a genetic disorder that affects the respiratory and digestive systems. However, not all mutations in the CFTR gene result in symptoms of the disease. In this case, the boy has a mutation that does not produce symptoms, meaning he is not affected by cystic fibrosis.
Identify the ethical issue: The school administrators' decision to transfer the boy was based on the assumption that his genetic mutation posed a risk to other students with cystic fibrosis. This raises ethical concerns about genetic discrimination, as the boy was treated differently based solely on his genetic information, despite not having the disease.
Consider the principle of non-maleficence: This principle in bioethics emphasizes avoiding harm. The decision to exclude the boy from school caused harm to him (e.g., missed education, emotional distress) without clear evidence that his presence posed a risk to others. This violates the principle of non-maleficence.
Examine the principle of justice: Justice in bioethics involves fairness and equal treatment. The boy was treated unfairly based on his genetic information, which is a form of genetic discrimination. This raises questions about the fairness of the school's actions and whether they were justified.
Reflect on the importance of informed decision-making: The school administrators may have acted without fully understanding the science behind the CFTR gene mutation and its implications. Ethical decision-making requires accurate scientific knowledge and consultation with experts to avoid unnecessary harm and discrimination.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

CFTR Gene and Cystic Fibrosis

The CFTR gene encodes a protein that regulates the movement of salt and water in and out of cells. Mutations in this gene can lead to cystic fibrosis, a serious genetic disorder that affects the lungs and digestive system. Understanding the nature of the specific mutation in the boy's case is crucial, as some mutations may not result in symptoms, raising questions about the implications of labeling individuals based on genetic information.
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Ethical Considerations in Genetic Discrimination

Genetic discrimination occurs when individuals are treated unfairly based on their genetic information. In this scenario, the boy's transfer raises ethical concerns about the rights of individuals with genetic mutations, particularly when those mutations do not manifest as health issues. It highlights the tension between public health interests and individual rights, emphasizing the need for careful consideration of how genetic information is used in decision-making.
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Informed Consent and Privacy

Informed consent is a fundamental ethical principle that requires individuals to understand and agree to the use of their personal information, including genetic data. The situation raises questions about whether the school had the right to disclose the boy's genetic status and whether the family was adequately informed about the implications of this information. Protecting privacy and ensuring informed consent are essential in discussions about genetic testing and its consequences.
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Textbook Question

What is the main purpose of genome-wide association studies (GWAS)? How can information from GWAS be used to inform scientists and physicians about genetic diseases?

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Textbook Question

Describe how the team from the J. Craig Venter Institute created a synthetic genome. How did the team demonstrate that the genome converted the recipient strain of bacteria into a different strain?

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Textbook Question

Consider ethical issues associated with creating a synthetic human genome. Are there specific applications for a synthetic human genome that you support? Is creating a synthetic genome enhanced with genes for certain kinds of traits one of those applications?

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Textbook Question

Dominant mutations can be categorized according to whether they increase or decrease the overall activity of a gene or gene product. Although a loss-of-function mutation (a mutation that inactivates the gene product) is usually recessive, for some genes, one dose of the normal gene product, encoded by the normal allele, is not sufficient to produce a normal phenotype. In this case, a loss-of-function mutation in the gene will be dominant, and the gene is said to be haploinsufficient. A second category of dominant mutation is the gain-of-function mutation, which results in a new activity or increased activity or expression of a gene or gene product. The gene therapy technique currently being used in clinical trials involves the 'addition' to somatic cells of a normal copy of a gene. In other words, a normal copy of the gene is inserted into the genome of the mutant somatic cell, but the mutated copy of the gene is not removed or replaced. Will this strategy work for either of the two aforementioned types of dominant mutations?

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Textbook Question

In 2013 the actress Angelina Jolie elected to have prophylactic double-mastectomy surgery to prevent breast cancer based on a positive test for mutation of the BRCA1 gene. What are some potential positive and negative consequences of this high-profile example of acting on the results of a genetic test?

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Textbook Question

The National Institutes of Health created the Genetic Testing Registry (GTR) to increase transparency by publicly sharing information about the utility of their tests, research for the general public, patients, health-care workers, genetic counselors, insurance companies, and others. The Registry is intended to provide better information to patients, but companies involved in genetic testing are not required to participate. Should company participation be mandatory? Why or why not? Explain your answers.

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