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The Role of Genetic Testing in Surgical Oncology, An Issue of Surgical Oncology Clinics of North America, E-Book

The Role of Genetic Testing in Surgical Oncology, An Issue of Surgical Oncology Clinics of North America, E-Book

Thomas K. Weber

(2016)

Additional Information

Book Details

Abstract

This issue of Surgical Oncology Clinics of North America, edited by Thomas Weber, MD, is devoted to Genetic Testing in Surgical Oncology.  Articles in this issue include: The Critical Importance of Timely Genetic Testing; Securing and Documenting Cancer Family History in the Age of the Electronic Medical Record; Cancer Family Registries: Vital Tools for Patient Management and Cancer Genetics Translational Research; The Genetics of Breast Cancer; The Genetics of Colorectal Cancer: HNPCC, FAP MYH, and Hamartomatous Syndromes Including Peutz-Jeghers and Jevenile Polyposis; Hereditary Gastric Cancer Syndromes; Hereditary Pancreatic Cancer Syndromes; Hereditary Melanoma: Genetics and Multidisciplinary Management; Multiple Endocrine Neoplasia: Genetics and Clinical Management; Sequence Variants of Uncertain Significance (VUS): What To Do When Genetic Testing Results Are Not Definitive; Confidentiality and the Risk of Genetic Discrimination: What Surgeons Need to Know; and A Certified Genetic Counselor: A Crucial Clinical Resource in the Management of Patients with Suspected Hereditary Solid Tumor Syndromes.

Table of Contents

Section Title Page Action Price
Front Cover Cover
The Role of GeneticTesting in SurgicalOncology i
Copyright\r ii
Contributors iii
CONSULTING EDITOR iii
EDITOR iii
AUTHORS iii
Contents v
Foreword\r v
Preface: Surgical Oncology in the Age of Genomic Medicine\r v
Alison’s Story—A Cautionary Tale in the Age of Genomic Medicine\r v
Securing and Documenting Cancer Family History in the Age of the Electronic Medical Record\r v
Certified Genetic Counselors: A Crucial Clinical Resource in the Management of Patients with Suspected Hereditary Cancer Sy ... v
Confidentiality & the Risk of Genetic Discrimination: What Surgeons Need to Know\r vi
The Genetics of Colorectal Cancer\r vi
The Genetics of Breast Cancer: What the Surgical Oncologist Needs to Know\r vi
Hereditary Pancreatic Cancer Syndromes\r vi
Hereditary Gastric Cancer Syndromes\r vii
Genetic Testing in the Multidisciplinary Management of Melanoma\r vii
Multiple Endocrine Neoplasia: Genetics and Clinical Management\r vii
Sequence Variants of Uncertain Significance: What to Do When Genetic Test Results Are Not Definitive\x0B viii
SURGICAL ONCOLOGY\rCLINICS OF NORTH AMERICA\r ix
FORTHCOMING ISSUES ix
January 2016 ix
April 2016 ix
July 2016 ix
RECENT ISSUES ix
July 2015 ix
April 2015 ix
January 2015 ix
Foreword xi
Preface: Surgical Oncology in the Age of Genomic Medicine\r xiii
REFERENCE xv
Alison’s Story—A Cautionary Tale in the Age of Genomic Medicine 635
Key points 635
Securing and Documenting Cancer Family History in the Age of the Electronic Medical Record 639
Key points 639
REASONS FOR COLLECTING AND DOCUMENTING A CANCER FAMILY HISTORY 640
THE PROCESS OF COLLECTING AND DOCUMENTING CANCER FAMILY HISTORY 641
How to Start 641
CIRCUMSTANCES THAT MAKE FAMILY HISTORY COLLECTION A CHALLENGE 642
UPDATING A FAMILY HEALTH HISTORY 644
REQUESTING A GENETIC CONSULT BASED ON THE FAMILY HEALTH HISTORY 644
AVERAGE/POPULATION RISK 645
INCREASED RISK 645
WHO CAN BENEFIT FROM A REFERRAL FOR GENETIC CONSULTATION? 647
A NOTE ABOUT CONFIDENTIALITY 647
FORMATS AND PLACEMENT OF A DOCUMENTED FAMILY HISTORY 647
SUMMARY 649
REFERENCES 649
Certified Genetic Counselors 653
Key points 653
WHAT IS GENETIC COUNSELING? 653
WHAT IS A CERTIFIED GENETIC COUNSELOR? 654
Why Is Certification Important 654
ARE GENETIC COUNSELORS LICENSED? 654
WHO SHOULD BE REFERRED FOR CANCER GENETIC COUNSELING? 655
HOW DOES USE OF GENETIC COUNSELING SERVICES IMPROVE THE QUALITY OF CARE PROVIDED BY THE PRACTICING SURGICAL ONCOLOGIST? 655
WHAT HAPPENS IN PRETEST CANCER GENETIC COUNSELING? 656
WHAT HAPPENS IN POSTTEST CANCER GENETIC COUNSELING? 661
HOW CAN A CANCER GENETICS DATABASE OR REGISTRY HELP? 662
HOW TO FIND OR HIRE A CANCER GENETIC COUNSELOR? 662
Referral to a Local Cancer Genetics Program 663
Partnering with a Local Cancer Genetics Program to Provide On-Site Services 663
Using a National Telephone Genetic Counseling Service for Patients 664
Hiring a Cancer Genetic Counselor 664
REFERENCES 664
Confidentiality & the Risk of Genetic Discrimination 667
Key points 667
INTRODUCTION 667
CURRENT LEGAL FRAMEWORK IN THE UNITED STATES REGARDING GENETIC DISCRIMINATION AND GENETIC INFORMATION PRIVACY 668
The Americans with Disabilities Act 668
Confidentiality and the Health Insurance Portability and Accountability Act 668
The portability section 669
The Health Insurance Portability and Accountability Act privacy rule 669
Data protection 669
Disclosure 669
Patient rights 669
Organizations exempt from following privacy and security rules 669
State laws prohibiting genetic discrimination 669
Genetic Information Nondiscrimination Act 670
Interaction of the Genetic Information Nondiscrimination Act with the Affordable Care Act 672
WADING THROUGH THE MISCONCEPTIONS TO DELIVER OPTIMAL MEDICAL CARE 673
FAMILY IMPLICATIONS 676
Benefits and Challenges to Family Members 676
Maintain Confidentiality in Light of Sharing Information with Family Members 677
Disclosure of Result if the Patient Dies 677
EMERGING ISSUES 678
Genome Sequencing 678
Social Media/Scenarios 678
SUMMARY 679
REFERENCES 679
The Genetics of Colorectal Cancer 683
Key points 683
INTRODUCTION 683
LYNCH SYNDROME 684
Features 684
Testing 685
Guidelines 685
Additional testing criteria and probability models 685
Universal tumor testing 689
Multigene testing 690
Management 690
Screening recommendations 690
Surgical decision-making following colorectal cancer diagnosis in Lynch syndrome 691
Chemoprevention 691
FAMILIAL ADENOMATOUS POLYPOSIS AND ATTENUATED FAMILIAL ADENOMATOUS POLYPOSIS 692
Background 692
Features 692
Testing 692
Management 693
Screening and risk-reducing strategies 693
MUTYH-ASSOCIATED POLYPOSIS 693
Background 693
Features 694
Genetic Testing 694
Management 694
PEUTZ-JEGHERS SYNDROME AND JUVENILE POLYPOSIS SYNDROME 694
Background 694
Features 695
Genetic Testing and Diagnosis 695
Management 696
SUMMARY 696
REFERENCES 696
The Genetics of Breast Cancer 705
Key points 705
INTRODUCTION 705
THE PRIME EXEMPLAR: HEREDITARY BREAST AND OVARIAN CANCER ASSOCIATED WITH BRCA1 AND BRCA2 MUTATIONS 706
BACKGROUND 707
GENETIC TESTING AND BRCA MUTATIONS 707
BRCA MUTATIONS AND FOUNDER POPULATIONS 709
TESTING STRATEGIES AND LIMITATIONS FOR PATIENTS WITHOUT CANCER 709
BRCA-ASSOCIATED RISK, VARIABLE PENETRANCE, AND THE INDICATIONS FOR PROPHYLACTIC SURGERY 709
BRCA-ASSOCIATED BREAST CANCER PATHOLOGY 712
THE ISSUE OF IONIZING RADIATION EXPOSURE: AGE-SPECIFIC WINDOW OF VULNERABILITY 712
BRCA-ASSOCIATED RISK FOR OVARIAN CANCER: THE CLEAREST MEDICAL NECESSITY 713
MRI SCREENING FOR WOMEN AT HIGH RISK OF BREAST CANCER 714
OTHER GENETIC SYNDROMES ASSOCIATED WITH BREAST CANCER 715
Li-Fraumeni Syndrome (LFS) 715
Cowden disease (CD) 717
Hereditary Diffuse Gastric Cancer and Lobular Breast Cancer (HDGC) 717
Partner and localizer of BRCA2 (PALB2) 718
Ataxia-Telangiectasia Mutated (ATM) gene 718
Checkpoint kinase 2 (CHEK2) 718
MULTIGENE PANELS: THE “SHOTGUN” APPROACH 719
CANCER RISK AND MUTATION PROBABILITY MODELS 719
SUMMARY 720
REFERENCES 720
Hereditary Pancreatic Cancer Syndromes 733
Key points 733
INTRODUCTION 733
CLINICAL AND EPIDEMIOLOGIC OVERVIEW 734
RISK FACTORS 735
PATHOLOGY 738
HEREDITARY SYNDROMES ASSOCIATED WITH PANCREATIC DUCTAL ADENOCARCINOMA 740
Overall 740
Hereditary Breast and Ovarian Cancer Syndrome 740
Lynch Syndrome 742
Familial Adenomatous Polyposis 742
Peutz-Jeghers Syndrome 743
Familial Atypical Multiple Mole Melanoma Syndrome 743
Hereditary Pancreatitis 743
Cystic Fibrosis 744
Ataxia Telangiectasias 744
Familial Pancreatic Cancer 745
STRATEGIES FOR THE IDENTIFICATION OF MUTATION CARRIERS 746
CLINICAL MANAGEMENT OPTIONS FOR UNAFFECTED MUTATION CARRIERS 748
CLINICAL MANAGEMENT OPTIONS FOR MUTATION CARRIERS DIAGNOSED WITH THE ASSOCIATED DISEASE PHENOTYPE 749
SUMMARY 750
REFERENCES 750
Hereditary Gastric Cancer Syndromes 765
Key points 765
INTRODUCTION 765
IDENTIFICATION OF THOSE AT RISK 766
HEREDITARY DIFFUSE GASTRIC CANCER 766
Clinical Features 766
Genetics 766
Genetic Counseling and Testing of Hereditary Diffuse Gastric Cancer 769
Endoscopic Surveillance 770
Surgical Management of Hereditary Diffuse Gastric Cancer 771
Preoperative considerations 771
Operative procedure 771
Management of Cancers at Other Sites 771
FAMILIAL INTESTINAL GASTRIC CANCER 772
GASTRIC ADENOCARCINOMA AND PROXIMAL POLYPOSIS OF THE STOMACH 772
GASTRIC CANCER IN OTHER HEREDITARY CANCER SYNDROMES 772
FUTURE DIRECTIONS 773
SUMMARY 773
ONLINE SOURCES 774
REFERENCES 774
Genetic Testing in the Multidisciplinary Management of Melanoma 779
Key points 779
INTRODUCTION 779
Clinical and Epidemiologic Overview 779
Risk Factors 780
SOMATIC GENETIC ALTERATIONS ASSOCIATED WITH MELANOMA CARCINOGENESIS 780
Tyrosine Kinases 780
RAS/RAF/MEK/ERK and Phosphoinositide 3-Kinase Pathways 782
GERMLINE (HEREDITARY) GENETIC ALTERATIONS ASSOCIATED WITH MELANOMA PREDISPOSITION 783
CDKN2A (P16) 783
Telomeres 784
Cyclin-Dependent Kinases 784
Phosphatase and Tensin Homologue, 9p21, and Additional Candidate Loci for Melanoma Predisposition 785
Melanocortin 1 Receptor 785
Microphthalmia-Associated Transcription Factor 786
BRCA 786
The Current Role of Genetic Testing in the Clinical Management of Melanoma 786
Clinical Assessment of Melanoma Risk 786
SUMMARY 787
REFERENCES 788
Multiple Endocrine Neoplasia 795
Key points 795
MULTIPLE ENDOCRINE NEOPLASIA TYPE 1 795
EARLY DIAGNOSIS OF MULTIPLE ENDOCRINE NEOPLASIA TYPE 1 796
PARATHYROID DISEASE IN MULTIPLE ENDOCRINE NEOPLASIA TYPE 1 796
PITUITARY TUMORS IN MULTIPLE ENDOCRINE NEOPLASIA TYPE 1 800
PANCREATIC NEUROENDOCRINE TUMORS IN MULTIPLE ENDOCRINE NEOPLASIA TYPE 1 800
MANAGEMENT OF RARE FUNCTIONAL PANCREATIC NEUROENDOCRINE TUMORS IN MULTIPLE ENDOCRINE NEOPLASIA TYPE 1 808
STOMACH, THYMIC, AND BRONCHIAL NEUROENDOCRINE TUMORS AND ADRENAL CORTICAL TUMORS 808
MANAGEMENT OF METASTATIC DISEASE IN MULTIPLE ENDOCRINE NEOPLASIA TYPE 1 811
Multiple Endocrine Neoplasia Type 4 812
Multiple Endocrine Neoplasia Type 2 812
DISCOVERY OF THE MEDULLARY THYROID CARCINOMA SYNDROMES 813
RET PROTO-ONCOGENE 814
GENETIC TESTING AND RISK STRATIFICATION 814
GENOTYPE AND PHENOTYPE 815
PROPHYLACTIC THYROIDECTOMY 815
Multiple Endocrine Neoplasia Type 2 816
MULTIPLE ENDOCRINE NEOPLASIA TYPE 2B 818
FAMILIAL MEDULLARY THYROID CARCINOMA 818
SUMMARY OF MULTIPLE ENDOCRINE NEOPLASIA TYPE 2 819
MANAGEMENT OF METASTATIC DISEASE IN MULTIPLE ENDOCRINE NEOPLASIA TYPE 2, MULTIPLE ENDOCRINE NEOPLASIA TYPE 3, AND FAMILIAL ... 819
REFERENCES 819
Sequence Variants of Uncertain Significance 833
Key points 833
TERMINOLOGY AND DEFINITIONS IN CANCER GENETICS 833
Basic Genetics 834
Missense 834
Nonsense 834
Frameshift 834
Insertion or deletion 834
Splicing 835
Regulatory 835
Silent 835
Genetic Variation Nomenclature 835
CLASSIFYING VARIANTS 835
VARIANTS IN COMMON AND RARE HEREDITARY CANCER SYNDROMES 836
INTERPRETING GENETIC TESTING RESULTS 837
Pathogenic Variant Detected 837
Pathogenic DNA Variant Not Detected 837
Who was tested? 837
What test was done? 838
Identification of a Variant of Uncertain Significance 838
SEEKING EVIDENCE FOR PATHOGENICITY IN ASSESSING VARIANTS OF UNCERTAIN SIGNIFICANCE 838
ASSOCIATION, OR LACK OF ASSOCIATION, OF THE VARIANT WITH HEREDITARY CANCER 839
Segregation: Finding the Variant in Multiple Affected Family Members 839
Population Frequency 839
Occurrence of the Variant in Other Families with Hereditary Cancer 840
Tumor Characteristics 840
Co-occurrence of Variants of Uncertain Significance with a Known Inherited Pathogenic Variant of the Gene 841
ASSOCIATION OF A VARIANT WITH ABNORMAL PROTEIN STRUCTURE, FUNCTION, OR EXPRESSION 841
Functional Analysis 841
Computational (in Silico) Analysis of Gene and Protein 841
CLASSIFYING VARIANTS BY COMBINING EVIDENCE 842
SUMMARY: TRANSLATION INTO CLINICAL MANAGEMENT 842
An Example of a Challenging Variant of Uncertain Significance Scenario 842
REFERENCES 844