Inherited Gastrointestinal Cancer in the New Era of Genetic Testing

2022 ◽  
Vol 32 (1) ◽  
pp. xiii-xiv
Author(s):  
Charles J. Lightdale
2017 ◽  
Vol 26 (2) ◽  
pp. 157-163 ◽  
Author(s):  
Lakshmi Manogna Chintalacheruvu ◽  
Trudy Shaw ◽  
Avanija Buddam ◽  
Osama Diab ◽  
Thamer Kassim ◽  
...  

Gastrointestinal cancer is one of the major causes of death worldwide. Hereditary gastrointestinal cancer syndromes constitute about 5-10% of all cancers. About 20-25% of undiagnosed cases have a possible hereditary component, which is not yet established. In the last few decades, the advance in genomics has led to the discovery of multiple cancer predisposition genes in gastrointestinal cancer. Physicians should be aware of these syndromes to identify high-risk patients and offer genetic testing to prevent cancer death. In this review, we describe clinical manifestations, genetic testing and its challenges, diagnosis and management of the major hereditary gastrointestinal cancer syndromes.Key words:  −  −  −  − .Abbreviations: ACG: American College of Gastroenterology; AFAP: attenuated FAP; APC: adenomatous polyposis coli; CDH1: E-cadherin; CHRPE: congenital hypertrophy of the retinal pigment epithelium; CRC: colorectal cancer; FAMMM: Familial atypical multiple mole melanoma; FAP: Familial adenomatous polyposis; GC: gastric cancer; HDGC: Hereditary diffuse gastric cancer; IHC: immunohistochemical; IPAA: ileal pouch–anal anastomosis; IRA: ileorectal anastomosis; MSI: microsatellite instability; MMR: mismatch repair; miRNA: micro RNA.


BioEssays ◽  
2008 ◽  
Vol 30 (11-12) ◽  
pp. 1246-1251 ◽  
Author(s):  
Hans-Jürgen Bandelt ◽  
Yong-Gang Yao ◽  
Martin B. Richards ◽  
Antonio Salas
Keyword(s):  

2021 ◽  
Vol 36 (Supplement_1) ◽  
Author(s):  
L Frith

Abstract Abstract text The growth in the use of direct-to-consumer-genetic testing (DTCGT) is having a major impact on sperm, egg and embryo donor conception (hereafter donor conception). DTCGT services include family history sites, e.g. Ancestry.com, and medical testing sites, e.g.23andme. Despite the many different motivations people have for using these services, it is now easier to search and find donor relatives, with donor-conceived people, recipients of donor gametes and embryos, and donors all using these services to make hitherto unlikely connections. Some individuals have found large numbers of donor-siblings, while donors have been traced by their adult donor offspring. DTCGT can also reveal unexpected origins with the numbers of people finding out they are donor-conceived through DTCGT rapidly increasing. For example, one woman discovered she was donor conceived after using 23andme to assess her risk of breast cancer, an eventuality she had never anticipated when she decided to take that test. The increasing use of DTCGT has led to claims that donor anonymity is dead and we are entering a new era where the possibilities of finding our genetic relatives and extended family have dramatically expanded. These developments will produce new landscapes where different systems collide and interact, creating new ways of locating and finding donor relatives. In the UK for example, information on genetic relations, donors and donor siblings, is located within two very different systems: ‘official’ regulatory systems, such as central registers of information held by government bodies such as the Human Fertilisation and Embryology Authority’s (HFEA) registers; and emerging digital online systems, of DTCGT. This paper will explore how these new developments interact with existing ways of finding out information about donor relatives and consider the ethical and legal issues and challenges for fertility practice.


2020 ◽  
Vol 52 (03) ◽  
pp. 133-141 ◽  
Author(s):  
Fady Hannah-Shmouni ◽  
Constantine A. Stratakis

AbstractPrimary or adrenocorticotropin-independent adrenocortical tumors and hyperplasias represent a heterogeneous group of adrenocortical neoplasms that arise from various genetic defects, either in isolation or familial. The traditional classification as adenomas, hyperplasias, and carcinomas is non-specific. The recent identification of various germline and somatic genes in the development of primary adrenocortical hyperplasias has provided important new insights into the molecular pathogenesis of adrenal diseases. In this new era of personalized care and genetics, a gene-based classification that is more specific is required to assist in the understanding of their disease processes, hormonal functionality and signaling pathways. Additionally, a gene-based classification carries implications for treatment, genetic counseling and screening of asymptomatic family members. In this review, we discuss the genetics of benign adrenocorticotropin-independent adrenocortical hyperplasias, and propose a new gene-based classification system and diagnostic algorithm that may aid the clinician in prioritizing genetic testing, screening and counseling of affected, at risk individuals and their relatives.


2015 ◽  
Vol 110 (2) ◽  
pp. 223-262 ◽  
Author(s):  
Sapna Syngal ◽  
Randall E Brand ◽  
James M Church ◽  
Francis M Giardiello ◽  
Heather L Hampel ◽  
...  

2009 ◽  
Vol 2 (4) ◽  
pp. 381-391 ◽  
Author(s):  
Matthew Wheeler ◽  
Aleksandra Pavlovic ◽  
Emil DeGoma ◽  
Heidi Salisbury ◽  
Colleen Brown ◽  
...  

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