Cancer and Inherited Predisposition Presentation Quiz
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Questions and Answers

What makes up 10% of cancers?

  • Somatic mutations
  • Acquired DNA damage
  • Germ-line mutations
  • Inherited DNA damage (correct)

What type of DNA damage increases with age, leading to an increased risk of cancer?

  • Germ-line mutations
  • Acquired DNA damage
  • Somatic mutations (correct)
  • Inherited DNA damage

Which type of DNA mutation/error is carried by every cell in the body in inherited cases?

  • Somatic mutations
  • Environmental exposures
  • Germ-line mutations (correct)
  • Acquired DNA damage

What do acquired mutations in a cell may eventually lead to?

<p>Increased risk of cancer (B)</p> Signup and view all the answers

Which environmental exposure can induce acquired DNA damage?

<p>Diet (D)</p> Signup and view all the answers

What type of DNA mutation/error is only carried by the cancer cells and not the normal cells?

<p>Somatic mutations (C)</p> Signup and view all the answers

What is a key consideration before conducting genetic testing for cancer susceptibility?

<p>The suggestive family history of the individual (B)</p> Signup and view all the answers

What is a challenge associated with molecular screening to detect a mutation in an affected individual or family?

<p>Technical demand of sequence gene or look for truncation mutants (A)</p> Signup and view all the answers

What is the primary cause of cancer, as discussed in the presentation?

<p>Acquired DNA errors leading to cancer (A)</p> Signup and view all the answers

What is a significant challenge in genetic testing for cancer susceptibility?

<p>The identification of known or likely deleterious mutation (D)</p> Signup and view all the answers

What problem arises due to the accumulation of multiple DNA errors/mutations?

<p>Predisposition to cancer (C)</p> Signup and view all the answers

What is the main limitation of conducting genetic testing for cancer susceptibility in unaffected individuals?

<p>Not considered appropriate for screening unaffected individuals (D)</p> Signup and view all the answers

Why is cancer susceptibility testing not considered appropriate for screening unaffected individuals?

<p>&gt;500 mutations have been reported and majority result in a truncated protein (B), &gt;500 mutations have been reported and majority result in a truncated protein (D)</p> Signup and view all the answers

What is the primary benefit expected from genetic testing for cancer susceptibility?

<p>Early identification of at-risk individuals (C)</p> Signup and view all the answers

What are the implications of a common disease like cancer in relation to phenocopies?

<p>Increased risk of phenocopies (A)</p> Signup and view all the answers

What makes cancer susceptibility testing more appropriate for specific ethnic groups?

<p>Specific mutations more common in certain ethnic groups (D)</p> Signup and view all the answers

Which factor is NOT mentioned as a cause of cancer in the text?

<p>Regular exercise (C)</p> Signup and view all the answers

The presence of which virus is NOT associated with a type of cancer according to the text?

<p>Influenza virus (A)</p> Signup and view all the answers

Which syndrome is NOT listed as an inherited cancer predisposition syndrome in the text?

<p>Down syndrome (A)</p> Signup and view all the answers

What is the main cause of cancer mentioned in the text?

<p>DNA damage (B)</p> Signup and view all the answers

Which type of cells are particularly susceptible to genetic damage and cancer, according to the text?

<p>Rapidly dividing cells (D)</p> Signup and view all the answers

What accounts for up to 80% of the carcinogens that individuals are exposed to in their diet, according to the text?

<p>&quot;Natural&quot; carcinogens in food (A)</p> Signup and view all the answers

What factor can transform a cell by altering critical genes that regulate cell growth, as mentioned in the text?

<p>Virus infection (B)</p> Signup and view all the answers

What kind of virus can cause lymphoma, as mentioned in the text?

<p>RNA virus or retrovirus (B)</p> Signup and view all the answers

What feature suggests an inherited cancer susceptibility syndrome?

<p>Several close or first degree relatives with a common cancer (C)</p> Signup and view all the answers

What is the lifetime risk of breast cancer for individuals with BRCA1 and BRCA2 mutations?

<p>83-88% (C)</p> Signup and view all the answers

Which of the following features indicate an increased likelihood of an individual having BRCA mutations?

<p>Breast and ovarian cancer in two different family members (D)</p> Signup and view all the answers

What is the ultimate goal in the management of any patient with a familial cancer syndrome?

<p>Prevention or early detection (B)</p> Signup and view all the answers

Which statement is true about the identification of inherited cancer susceptibility genes?

<p>The identification is in early stages (D)</p> Signup and view all the answers

What plays a role in familial cancer and may also be implicated in sporadic cancer?

<p>Genes implicated in inherited cancer susceptibility (A)</p> Signup and view all the answers

What percentage of individuals with a specific genetic defect will get colon cancer in some colon cancer syndromes?

<p>100% (A)</p> Signup and view all the answers

Which statement is true about the cause of cancer?

<p>Cancer arises from cumulative genetic errors resulting in a growth advantage (A)</p> Signup and view all the answers

What is the main benefit of screening for familial cancer syndromes?

<p>Early evidence of clinical phenotype (D)</p> Signup and view all the answers

Which testing strategy is considered optimal for individuals from families affected by breast cancer?

<p>Testing the oldest affected family member first (C)</p> Signup and view all the answers

What are the common hereditary breast cancer genes?

<p>BRCA1 and BRCA2 (A)</p> Signup and view all the answers

What is the estimated lifetime risk of ovarian cancer for individuals with hereditary breast and ovarian cancer syndromes?

<p>16-60% (C)</p> Signup and view all the answers

What are some features that indicate an increased likelihood of an individual having BRCA mutations?

<p>Suffering from male breast cancer (B)</p> Signup and view all the answers

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