Saturday, February 12, 2011
European Journal of Human Genetics - Abstract of article: On the origin and diffusion of BRCA1 c.5266dupC (5382insC) in European populations
"The BRCA1 mutation c.5266dupC was originally described as a founder mutation in the Ashkenazi Jewish (AJ) population. However, this mutation is also present at appreciable frequency in several European countries, which raises intriguing questions about the origins of the mutation. We genotyped 245 carrier families from 14 different population groups (Russian, Latvian, Ukrainian, Czech, Slovak, Polish, Danish, Dutch, French, German, Italian, Greek, Brazilian and AJ) for seven microsatellite markers and confirmed that all mutation carriers share a common haplotype from a single founder individual.............Our results illustrate that (1) BRCA1 c.5266dupC originated from a single common ancestor and was a common European mutation long before becoming an AJ founder mutation and (2) the mutation is likely present in many additional European countries where genetic screening of BRCA1 may not yet be common practice."
The rise of the genome bloggers : Nature News (not amateurs)
“They are not amateurs. They are far from being amateurs.”
abstract: HE4 and CA125 as a diagnostic test in ovarian cancer: prospective validation of the Risk of Ovarian Malignancy Algorithm
Conclusion:
This independent validation study demonstrated similar performance indices to those recently published. However, in this study, HE4 and ROMA did not increase the detection of malignant disease compared with CA125 alone. Although the initial reports were promising, measurement of HE4 serum levels does not contribute to the diagnosis of ovarian cancer
abstract: High prevalence of symptoms associated with ovarian cancer among Australian women
Background: Symptoms associated with ovarian cancer are often vague and non-specific, such as abdominal bloating and pain. Presently, nothing is known about the prevalence of these symptoms among women in the community.
Aims: To identify the prevalence and correlates of symptoms associated with ovarian cancer in a nationally representative sample of Australian women. Methods: Women answered questions about symptoms associated with ovarian cancer via computer-assisted telephone interviews. Binomial regression was used to assess the association between reporting symptoms, demographic characteristics and sexual problems.
Results: Data on 2235 women aged 18-70 who had not had an oophorectomy or hysterectomy were analysed. Prevalences of symptoms were abdominal bloating 52%, abdominal pain 37%, increased abdominal size 30%, pelvic pain 29%, feeling full quickly 18% and unable to eat normally 15%. One-third of women (32%) reported three or more symptoms, 2% reported all six and 32% of women reported none. Severe symptoms were generally reported by <10% of women reporting symptoms, and symptoms usually persisted for 5 days or less a month. Older women were less likely to report symptoms, as were women who had been pregnant. There was an association between symptoms and sexual difficulties whereby women who reported multiple ovarian cancer symptoms were more likely to report sexual problems.
Conclusions: There is a high prevalence of ovarian cancer symptoms in the Australian community. Because of this, awareness campaigns will likely impact a large number of women who do not have ovarian cancer.
(no abstract) Peritoneal fibrosis leading to small bowel obstruction two years after first-line intraperitoneal chemotherapy for optimally debulked ovarian cancer Australian
DOI: 10.1111/j.1479-828X.2010.01230.x
Issue
Australian and New Zealand Journal of Obstetrics and Gynaecology
abstract: Changes in pre-diagnostic serum C-reactive protein concentrations and ovarian cancer risk: a longitudinal study
Define: C-reactive protein (CRP) is a protein found in the blood, the levels of which rise in response to inflammation (an acute-phase protein). ...
en.wikipedia.org/wiki/C-reactive_protein
Abstract
BACKGROUND: Evidence suggests that inflammation may be associated with increased risk of ovarian cancer but there is paucity of studies investigating this association, especially using over-time changes in inflammatory biomarkers.
MATERIALS AND METHODS: We conducted a prospective population-based case-control study nested within the Finnish Maternity Cohort (FMC). Within the FMC, 170 women with ovarian cancer who had donated serum samples to the cohort twice, ≥1 year apart, before cancer diagnoses were identified. One control per case was matched for age, parity and sampling date.
RESULTS: Comparing the highest with lowest tertiles, the odds ratio (OR) of ovarian cancer using the first set of serum samples (mean lag time to cancer diagnosis 9.0 years) was 1.62 [95% confidence interval (CI) 0.93-2.83]. However, analysis conducted using the second set of serum samples donated closer to cancer diagnosis (mean lag time 6.4 years) revealed a significantly increased risk of ovarian cancer comparing extreme tertiles of C-reactive protein (CRP) concentrations; OR 1.96 (95% CI 1.11-3.4). Over time, increases in individuals' CRP concentrations were also associated with increased risk; OR 1.90 (95% CI 1.12-3.23).
CONCLUSION: The results suggest that inflammation may precede ovarian cancer since increasing CRP concentrations, both across tertiles and longitudinally at the individual level, were associated with increased risk.
abstract: Centralized treatment of advanced stages of ovarian cancer improves survival: a nationwide Danish survey
"...Treatment in a referral center was an independent prognostic factor for overall survival hazard ratio, 0.83 (confidence interval 0.70-0.98).
Conclusion. Patients with stage IIIC and IV ovarian cancer benefit from treatment in a tertiary referral center."
abstract: Trends in incidence of borderline ovarian tumors in Denmark 1978-2006
Note: other research is of the same opinions (see prior blog posts) that incident rates of ovarian cancer are in fact not reducing (eg. population...)
Conclusions. The incidence rate of borderline ovarian tumors increased significantly in Denmark in 1978-2006. In line with results from ovarian cancer, Denmark had a higher incidence rate of borderline ovarian tumors compared with the other Nordic countries in 1978-2006.
abstract: A systematic review of gynecological cancer surveillance in women belonging to Hereditary Nonpolyposis Colorectal Cancer (Lynch syndrome) fa
Conclusions.
Currently available published studies on gynecological cancer surveillance in women with HNPCC do not adequately allow for evidence-based clinical decisions. Detection of endometrial cancer or hyperplasia in nonsymptomatic women belonging to a HNPCC family is improved by adding routine endometrial sampling along with transvaginal ultrasound for surveillance visits. No benefit was shown for ovarian cancer surveillance.
abstract: A patient presenting nasal septum perforation during bevacizumab-containing chemotherapy for advanced breast cancer (and colorectal/ovarian) see Blogger's note
Blogger's note:
nasal perforations (while rare) has been widely reported in patient social networks and vastly under-reported by institutions, as evidenced by the incidence rates per this abstract; this is not a new issue/concern
Abstract:
Nasal septum perforation is a rare but described complication of the anti-angiogenetic agent bevacizumab. ........ The patient denied use of cocaine or other intranasal irritants. ........ Thus far 8 other cases of bevacizumab-related nasal septum perforation have been published: 5 patients with colorectal cancer, 2 patients with breast cancer and 1 with ovarian cancer.....cont'd
abstract: Recreational physical activity and ovarian cancer
CONCLUSIONS: Our data provide weak evidence in support of beneficial effects of physical activity on ovarian cancer risk and survival, but results should be interpreted cautiously because of the lack of a clear dose response relation with higher levels of exercise and the likely misclassification of self-reported activity.
abstract: Morbidity of diaphragmatic surgery for advanced ovariannext term cancer: Retrospective study of 148 cases
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