หน้า 6
Cancer
Carrier of BRCA1 (breat cancer1)
- Jolie whose mother, grandmother and aunt all died of cancer, took the decision after blood tests revealed she carried a mutation in the BRCA1 gene.
- A carrier of the breast-cancer and ovarian-cancer gene BRCA1, jolie had a double mastectomy in 2013 to dramatically reduce her risk of developing breast cancer.
- The actress chose to be tested because her mother was diagnosed with ovarian cancer at a young age.
- BRCA1 and BRCA2 genes are tumor suppreessor genes.
- When they function normally, they help prevent uncontrolled cell growth that can lead to malignant tumors.
- When the BRCA genes have faulty mutations, it can lead to the development of hereditary breast and ovarian cancer.
- The mutated BRCA1 and BRCA2 genes are inherited in an autosomal dominant.
- Pattern.
Will you do the same as Angelina did?
- Just becuase a person inherits the defective gene does not mean he or she will develop cancer, but inheritance greatly increases the risk.
- Out of every 100 women who inherit a mutated BRCA1 or BRCA2 gene, as many as 60 will develop breast cancer by age 50; by age 70, approximately 80 willdevelop breast cancer.
หน้า 7
To design the best possible approach, you need to learn all you can about how the genefactors into the disorder. For example, which tissues the disorder affects, what role the protein encoded by the gene plays within the cells of that tissue, and exactly how mutations in the gene affect the protein's function.
- Will adding a normal copy of the gene fix the problem in the affected tissue ?
-Or could getting rid of the defective gene fix it ?
a gene is defective, no functional protein is being made: adding a functional copy of the gene could correct the problem. A defective gene codes for a protein that starts doing something it shouldn't or prevents another protein from doing its job: get rid of the misbehaving protein.
หน้า 6CancerCarrier of BRCA1 (breat cancer1)- Jolie whose mother, grandmother and aunt all died of cancer, took the decision after blood tests revealed she carried a mutation in the BRCA1 gene.- A carrier of the breast-cancer and ovarian-cancer gene BRCA1, jolie had a double mastectomy in 2013 to dramatically reduce her risk of developing breast cancer.- The actress chose to be tested because her mother was diagnosed with ovarian cancer at a young age.- BRCA1 and BRCA2 genes are tumor suppreessor genes.- When they function normally, they help prevent uncontrolled cell growth that can lead to malignant tumors.- When the BRCA genes have faulty mutations, it can lead to the development of hereditary breast and ovarian cancer.- The mutated BRCA1 and BRCA2 genes are inherited in an autosomal dominant.- Pattern.Will you do the same as Angelina did?- Just becuase a person inherits the defective gene does not mean he or she will develop cancer, but inheritance greatly increases the risk.- Out of every 100 women who inherit a mutated BRCA1 or BRCA2 gene, as many as 60 will develop breast cancer by age 50; by age 70, approximately 80 willdevelop breast cancer.หน้า 7To design the best possible approach, you need to learn all you can about how the genefactors into the disorder. For example, which tissues the disorder affects, what role the protein encoded by the gene plays within the cells of that tissue, and exactly how mutations in the gene affect the protein's function.- Will adding a normal copy of the gene fix the problem in the affected tissue ?-Or could getting rid of the defective gene fix it ?a gene is defective, no functional protein is being made: adding a functional copy of the gene could correct the problem. A defective gene codes for a protein that starts doing something it shouldn't or prevents another protein from doing its job: get rid of the misbehaving protein.
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