NDLI: Phenotypic heterogeneity of hereditary gynecologic cancers: a report from the Creighton hereditary cancer registry

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Novel and recurrent BRCA1/BRCA2 mutations in early onset and familial breast and ovarian cancer detected in the Program of Genetic Counseling in Cancer of Valencian Community (eastern Spain). Relationship of family phenotypes with mutation prevalence

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Phenotypic heterogeneity of hereditary gynecologic cancers: a report from the Creighton hereditary cancer registry

Content Provider	Springer Nature Link
Author	Casey, Murray Joseph Bewtra, Chhanda Lynch, Henry T. Snyder, Carrie Stacy, Mark Watson, Patrice
Copyright Year	2013
Abstract	To determine the validity of observations suggesting a significant dichotomy of gynecologic cancers determined by linkage to specific genetic defects associated with two major autosomal dominant hereditary cancer syndromes; the Creighton University Hereditary Cancer Registry was searched for female carriers of germ line mutations in BRCA1 and BRCA2, associated with the Hereditary Breast Ovarian Cancer syndrome, and in the mismatch repair (MMR) genes MLH1, MSH2 and MSH6, associated with Lynch syndrome, who were registered with invasive uterine, ovarian, fallopian tube or peritoneal cancers between January 1, 1959 and December 31, 2010. From 217 such cases, a total of 174 subjects, consisting of 95 BRCA1 and BRCA2 mutation carriers and 79 carriers of mutations in MMR genes, were identified who had current signed Health Insurance Portability and Accountability Act forms and complete primary diagnostic pathology reports and clinical records. Data meticulously extracted from these cases were categorized and statistically analyzed. There were highly significant differences between carriers of BRCA1 and BRCA2 mutations and carriers of MMR gene mutations in the proportion of serous carcinomas compared with endometrioid carcinomas of the uterus, including cervix and endometium (p < 0.002), ovaries (p < 0.001) and overall, including fallopian tube and peritoneum cancers (p < 0.001). Endometrioid carcinoma was found in one and transitional carcinoma in another of the 14 BRCA1 mutation carriers with fallopian tube cancer, and endometrioid carcinoma was found in two of four MMR gene mutation carriers with fallopian tube cancers. All other fallopian tube cancers were serous carcinomas. Seven BRCA1 and one BRCA2 mutation carriers were diagnosed with primary peritoneal serous carcinoma; no peritoneal carcinomas were registered in MMR gene mutation carriers. Nine of 14 gynecologic cancers with associated endometriosis in mutation carriers were endometrioid or endometrioid mixed carcinomas compared with just three of other histologic types. Primary breast cancers, that characterize the HBOC syndrome, were much more frequent in BRCA1 and BRCA2 mutation carriers; while multiple gynecologic cancers and associated colorectal and urinary tract cancers, which are features of Lynch syndrome, were more common in MMR gene mutation carriers. Both serous and endometrioid carcinomas were diagnosed in MMR gene mutation carriers at significantly younger ages than in BRCA1 and BRCA2 mutation carriers (p < 0.0006). These findings confirm a clear dichotomy of uterine, ovarian and fallopian tube cancers associated with inheritance of mutations in BRCA1 and BRCA2 contrasted with inheritance of MMR gene mutations. This opens possibilities for new approaches to molecular genetic research into carcinogenic pathways and raises important new considerations regarding counseling, screening, prophylaxis and treatment of mutation carriers.
Starting Page	719
Ending Page	740
Page Count	22
File Format	PDF
ISSN	13899600
Journal	Familial Cancer
Volume Number	12
Issue Number	4
e-ISSN	15737292
Language	English
Publisher	Springer Netherlands
Publisher Date	2013-05-12
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Hereditary Phenotypic heterogeneity Uterine cancer Ovarian and fallopian tube cancer Peritoneal cancer Cancer Research Human Genetics Epidemiology Biomedicine general
Content Type	Text
Resource Type	Article
Subject	Genetics Cancer Research Genetics (clinical) Oncology

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