CIRCULATING LEVELS OF INSULIN-LIKE GROWTH FACTOR-I AND RISK OF OVARIAN CANCER
|
|
- Teresa Sims
- 5 years ago
- Views:
Transcription
1 Int. J. Cancer: 101, (2002) 2002 Wiley-Liss, Inc. Publication of the International Union Against Cancer CIRCULATING LEVELS OF INSULIN-LIKE GROWTH FACTOR-I AND RISK OF OVARIAN CANCER Annekatrin LUKANOVA 1,2,Eva LUNDIN 2,3,Paolo TONIOLO 4,5,6,Andrea MICHELI 7,Arslan AKHMEDKHANOV 4,5,6,Sabina RINALDI 1, Paola MUTI 8,Per LENNER 9,Carine BIESSY 1,Vittorio KROGH 7,Anne ZELENIUCH-JACQUOTTE 5,6,Franco BERRINO 7,Gö ran HALLMANS 2, Elio RIBOLI 10 and Rudolf KAAKS 1 * 1 Hormones and Cancer Group, International Agency for Research on Cancer, Lyon, France 2 Department of Public Health and Clinical Medicine/Nutritional Research, University of Umeå, Sweden 3 Department of Medical Biosciences/Pathology, University of Umeå, Umeå, Sweden 4 Department of Obstetrics and Gynecology, New York University School of Medicine, New York, NY, USA 5 Kaplan Comprehensive Cancer Center, New York University School of Medicine, New York, USA 6 Department of Environmental Medicine, New York University School of Medicine, New York, NY, USA 7 Unit of Epidemiology, Istituto Nazionale Tumori, Milan, Italy 8 Department of Social &Preventive Medicine, State University of New York at Buffalo, School of Medicine &Biomedical Sciences, Buffalo, New York, USA 9 Department of Oncology, Umeå University Hospital, Umeå, Sweden. 10 Unit of Nutrition and Cancer, International Agency for Research on Cancer, Lyon, France Insulin-like growth factor (IGF)-I, a mitogenic and antiapoptoticpeptide,hasbeenimplicatedinthedevelopmentof several cancers. We hypothesized that high circulating IGF-I concentrations may be associated with an increased risk of ovarian cancer. Acase control study was nested within 3 prospective cohorts in New York (USA), Umeå (Sweden) and Milan (Italy). One hundred thirty-two women with primary invasive epithelial ovarian cancer diagnosed at least 1 year after blood donation were case subjects. For each case, 2control subjects were selected, matching the case subject on cohort, menopausal status, age and date of recruitment (n 263).Onlywomenwhodidnotuseexogenoushormones at blood donation were included in the study. There was no associationbetweenigf-iconcentrationsandovariancancer risk in the study group as awhole. In analyses restricted to subjects who had developed ovarian cancer at ayoung age (<55), circulating IGF-I was directly and strongly associated with ovarian cancer risk (OR 4.97; 95% CI for the top vs. the bottom IGF-I tertile after adjustment for parity, BMI categories and smoking). There was no significant association of IGF binding protein-3 with ovarian cancer risk. We found astrong direct relationship between circulating IGF-I levels and risk of developing ovarian cancer before age 55. Additional, larger studies of this association are needed to provide more precise estimates of effect Wiley-Liss, Inc. Key words: insulin-like growth factor-i; insulin-like growth factor binding protein-3; ovarian cancer; cohort study Several hypotheses about ovarian carcinogenesis have been proposed, implicating incessant ovulation, 1 gonadotropins, 2,3 steroid hormones, 3,4 inflammatory processes 5 orretrograde carcinogen transportation 6 askey etiological factors. The existing epidemiologic evidence gives support to the hypothesis postulating that frequent ovulation is related to increased ovarian cancer risk, but additional hormonal factors such as steroid hormones, gonadotropins, insulin or insulin-like growth factor (IGF)-I are also believed to play arole. 7 Recentepidemiologicalstudieshaverelatedelevatedcirculating levels of IGF-I, measured as absolute concentrations, or relative to levels of IGF-binding protein-3 (IGFBP-3), to increased risk of cancers of the breast, prostate and colon The principal mechanisms by which IGF-I is believed to influence cancer risk involve increased cell proliferation and inhibition of apoptosis, 14 effects that have been demonstrated in many cell types, including normal and neoplastic epithelial ovarian cells Increased proliferation rates and the impairment of apoptosis may allow cells that have harbored mutations in proto-oncogenes and tumor suppressor genestosurviveandexpandclonally.initialdatalinkingtheigf-i systemtoovariancancercomefromobservationsthatigf-ilevels are higher in cystic fluid from invasive malignant ovarian neoplasms than in cystic fluid from benign neoplasms. 18 IGF-I receptors are present in surgical specimens from primary or metastatic ovariantumors 17 andcarcinomacellsderivedfromfresh,untreated ovariancancersexpressallmajorcomponentsoftheigf-isystem, IGF-peptides, type-i IGF-I receptor, IGFBPs, and demonstrate functional responses to exogenous IGF. 19 IGFBP-3,themajorcarrierproteinofIGF-Iinthecirculation,is known to reduce IGF-I tissue availability and to decrease IGF-I biological activity, and has also been shown to have an IGF-Iindependent inhibitory effect on cell growth. 14 In1small study, IGFBP-3 levels were found to be decreased in patients with epithelial ovarian cancer compared to women with benign lesions or healthy controls 20 and lower levels of IGFBP-3 in surgically removed ovarian tumor tissues, were associated with unfavorable prognosis, such as large size and advanced stage of the residual tumor. 21 We describe findings from apooled case control study nested within 3prospective studies in New York (USA), Umeå (Sweden) and Milan (Italy). The study s leading hypothesis was that the risk of ovarian cancer increases with increasing circulating levels of IGF-I or decreased circulating levels of IGFBP-3 in the years preceding clinical diagnosis. MATERIAL AND METHODS Study cohorts The collaborating cohorts have been described in detail previously 9,13,22 and included the New York University Women s The contents of this article are solely the responsibility of the authors and do not necessarily represent the official views of the National Cancer Institute. Grant sponsor: National Cancer Institute; Grant number: R01 CA81188, R01 CA81200, RO1 CA34588; Grant sponsor: Italian Association of Cancer Research and the Swedish Cancer Society. *Correspondence to: Hormones &Cancer Group, International Agency for Research on Cancer, 150 Cours Albert Thomas Lyon, France. Fax: kaaks@iarc.fr Received 18 April 2002; Revised 4June 2002; Accepted 5June 2002 DOI /ijc Publishedonline21August2002inWileyInterScience( wiley.com).
2 550 LUKANOVA ET AL. Health Study (NYUWHS), the Northern Sweden Health and Disease Study (NSHDS), and the Study of Hormones and Diet in the Etiology of Breast Cancer (ORDET). Main characteristics of these cohorts are presented in Table I. At recruitment, subjects in the NYUWHS and the NSHDS were asked to complete a self-administered questionnaire to collect demographic, lifestyle and medical information and to donate a venous blood sample. The baseline questionnaires in NYUWHS and ORDET cohorts included a detailed section on reproductive history. Information about exogenous hormone use was collected at baseline from ORDET subjects and from follow-up questionnaires for NYUWHS. In the NSHDS, a reproductive history and exogenous hormone use questionnaire was administered prospectively to 47% of the subjects and a similar questionnaire was sent out retrospectively to all women, selected to participate in the study (response rate of 95%). Data were also collected from medical records of the NSHDS case subjects; for a few deceased women (n 13) these records were the only source of information about reproductive history and hormone use available. The NSHDS and ORDET components of the study included only Caucasian subjects, while in NYUWHS information about race was available for 78% of the subjects included in the present study. Among them 88% of the women indicated that they were non- Hispanic whites, 6% as black, 3% as Hispanic, 3% as other ethnicity. Identification of ovarian cancer cases and selection of control subjects Case subjects were cohort members with primary, invasive epithelial ovarian cancer that was diagnosed at least 1 year after the initial blood donation, without preceding cancer diagnosis and identified within the parent cohort by the date of the last complete follow-up. Follow-up in the NYUWHS consists of periodic contact by mail and telephone, as well as record linkages with state-wide tumor registries (New York, New Jersey, Connecticut and Florida) and the U.S. National Death Index. It was estimated that follow-up is approximately 95% complete for breast cancer cases diagnosed during the study period. 23 In the NSHDS, ovarian cancer cases were identified through linkage with regional and national cancer registries and the vital status of the study participants was ascertained by linkage with the regional and national registries for all-cause mortality. The ORDET database was linked to the local cancer registry (Lombardy Cancer Registry) to identify ovarian cancer cases and to the regional residents files to check the vital status of cohort members. A total of 132 ovarian cancer cases were included for our study from the 3 parent cohorts (Table I). Among tumors with histological verification (n 115), 48% were of serous (n 55), 12% of endometrioid (n 14), 11% of mucinous (n 13) and 7% of clear cell types (n 8), whereas the remaining 22% were classified as carcinoma not-otherwise specified (n 17), or as mixed (n 1) or undifferentiated (n 4) carcinomas. For each case subject, 2 control subjects were selected at random among appropriate risk sets. The risk set for a given case included all cohort subjects alive, free of cancer, and who have not had a bilateral ovariectomy, and matched the case on cohort, menopausal status at enrollment, age ( 6 months), date at recruitment ( 3 months) and, for premenopausal subjects, day of the menstrual cycle at blood donation (for NYUWHS and ORDET subjects only). Potential case and control subjects from the NSHDS who reported use of exogenous hormones at the time of blood donation were not considered eligible, whereas in the NYU- WHS and ORDET cohorts, subjects reporting hormone use at baseline were not recruited. The matching for menopausal status was confirmed by follicle-stimulating hormone (FSH) measurement. A total of 263 control subjects were identified and included in our study (Table I). The Ethical Review Boards of New York University School of Medicine, the University of Umeå, Istituto Nazionale Tumori in Milan and the International Agency for Research on Cancer, in Lyon, France, reviewed and approved the present study. Laboratory analyses The hormone analyses were carried out on serum samples obtained from the NYUWHS subjects and plasma samples, in which heparin was used as an anticoagulant, obtained from the NSHDS and ORDET subjects. The laboratory analyses were carried out at the Hormone Laboratory at the International Agency for Cancer Research, Lyon, France. Samples from case subjects and their matched control subjects were always analyzed in the same assay kit and on the same day. Laboratory personnel were unable to distinguish among case and control samples. To control the quality of the peptide measurements, aliquots from a pool of quality control plasma and 3 standard sera were inserted randomly in each batch. Peptide concentrations were measured by double-antibody, immunoradiometric assays with reagents from Diagnostic System Laboratories, (Webster, Texas). Total IGF-I was measured after acid-ethanol precipitation of IGFBPs. The mean intra-batch coefficients of variation were 1.5% for an IGF-I concentration of 150 ng/ml and 4.8% for an IGFBP-3 concentration of 3,800 ng/ml. The mean inter-batch coefficients of variation were 3.4% for an IGF-I concentration of 150 ng/ml, and 7.2% for an IGFBP-3 concentration of 3800 ng/ml. Among 86 subjects from the NYUWHS cohort who had a second blood sample taken months after the first blood donation (mean duration between visits 18 months), intraclass correlations (calculated from variance components estimated by the MIXED procedure in the Statistical Analysis System [SAS Institute, Cary, NC]) 24 between repeated peptide measurements were 0.86 for IGF-I, and 0.93 for IGFBP-3. These results confirm previous findings that single serum measurements of IGF-I or IGFBP-3 are representative of the peptide levels for a period of at least 1 year. 11,25,26 FSH levels were measured by immunoradiometric assay with reagents from Diagnostic System Laboratories, (Webster, Texas). For a FSH concentration of 15 IU/ml, the mean intra-batch and the inter-batch coefficients of variation were 4.2% and 12.6%, respectively. Statistical analysis An analysis of covariance was used to investigate subgroup differences in mean IGF-I and IGFBP-3 levels (by case/control status, study cohort, oral contraceptives [OC] use, parity, diabetes diagnosis, family history of breast cancer, BMI and smoking categories), adjusting for potential confounders. This analysis was TABLE I CHARACTERISTICS OF THE COHORT STUDIES INCLUDED IN THE POOLED ANALYSIS OF IGF-I, IGFBP-3 AND OVARIAN CANCER Cohort NYUWHS (New York, USA) NSHDS (Umeå, Sweden) ORDET (Milan, Italy) Study setting Recruitment period Cohort size Age range at enrolment Last complete follow-up Number of cases Number of controls Median age (range) Mammographic , Dec ( ) screening clinic General population 1986 present 43, Sep ( ) Healthy volunteers and women attending breast cancer prevention unit , Jan ( )
3 IGF-I AND OVARIAN CANCER 551 carried out using the Generalized Linear Models (GLM) SAS procedure. Pearson s partial correlations, adjusted for age and study cohort, were calculated on the basis of sums of squares error estimates, also obtained by the SAS GLM procedure. Odds ratios for disease by quartile levels of the hormone variables were estimated by conditional logistic regression models, using the SAS PHREG procedure. Cohort-specific quartile cutoff points were determined according to variable distributions in the cases and controls combined. Likelihood ratio tests were used to assess linear trends in ORs over the quartiles, giving quantitative scores of 1 4 to the 4 levels. All statistical tests and corresponding p-values were 2-sided, and p-values 0.05 were considered statistically significant. The potential confounding effects of ages at menarche and menopause, parity, BMI (in categories 23, 23 25, 25 30, 30), use of OC and hormone replacement therapy, smoking, physical activity, education and selected medical conditions (diabetes, family history of breast cancer and hypertension) were examined by including these factors in the conditional logistic regression models. RESULTS At recruitment, 33% of the case subjects (44 women) were premenopausal. Mean age at cancer diagnosis was years (median 61.1 years). The time between recruitment and cancer diagnosis ranged from 12 months to 13.3 years, with an average of 5.7 years (median 5.4 years). Eighty-six percent of the case subjects were diagnosed at least 2 years after cohort recruitment, whereas 73% were diagnosed after more than 3 years. Case subjects tended to report less frequently a history of full-term pregnancy (68% vs. 82%, p 0.01), to be leaner (BMI 25.0 vs. 26.0, p 0.03), and to have reached their menopause at an older age (50.2 vs years, p 0.05) than controls (Table II). There were no significant differences between case and control subjects in their mean age at menarche, frequency of OC use, smoking habits, diagnosis of diabetes or family history of breast cancer. Mean IGF-I and IGFBP-3 levels differed between cohorts. In matched sets where the case was diagnosed before age 55, IGF-I concentrations were highest in ORDET subjects, intermediate in NYUWHS subjects and lowest in the NSHDS (Table III). There was a moderate direct correlation between levels of IGF-I and IGFBP-3 (r 0.46, p ) and there was an inverse correlation of IGF-I with age (r 0.42, p ). Only very weak correlations were observed between levels of IGF-I and IGFBP-3 with height and BMI (data not shown) and the mean levels of both peptides were similar across BMI categories. Mean IGF-I levels were the highest in overweight women with BMI between 25 and 30, compared to women with BMI 23 and BMI 30, confirming previous observations of a non-linear relationship between BMI and IGF-I. 27 After adjustment for age at sampling, study cohort and case control status, mean IGF-I and IGFBP-3 levels showed no significant differences according to menopausal status at baseline, ever-use of OC, pre-existing diabetes diagnosis or family history of breast cancer. Women reporting a history of full-term pregnancy tended to have lower mean IGF-I (170.4 vs ng/ml, p 0.08) and IGFBP-3 (3,745 vs. 3,933 ng/ml, p 0.08) levels than nulligravid women. Smokers tended to have a slightly higher mean IGF-I level compared to non-smokers but the difference did not reach statistical significance (182.0 vs , p 0.28). In the 3 cohorts combined, mean IGF-I concentrations were only slightly higher (4.6%) in the case than in the control subjects (176.1 vs ng/ml IGF-I, p 0.24). For women who had developed cancer before age 55 or in those who were age 50 or less at recruitment this difference increased to 13% (226.8 vs ng/ml, p 0.03) and 18% (240.0 vs ng/ml, p 0.004), respectively. The difference in mean IGF-I levels between case and control subjects was evident for the NYUWHS and ORDET subjects, whereas in NSHDS no difference in mean IGF-I in case and control subjects were observed (Table III). There were no significant differences in mean IGFBP-3 levels in case and control subjects (Table III). Overall, for all age groups combined, there were no significant associations between IGF-I and IGFBP-3 concentrations and ovarian cancer risk, either before or after adjustment for potential confounders (OR [95% CI] 1.10 [ ], 0.80 [ ], 1.38 [ ], p 0.57 for quartiles of IGF-I and 1.23 [ ], 1.14 [ ], 0.84 [ ], p 0.60 for quartiles of IGFBP-3). Adjustment of the IGF-I models for IGFBP-3, and of the IGFBP-3 models for IGF-I, did not alter these results. A similar lack of association between peptide hormone levels and ovarian cancer risk was observed in the women who were 55 or older at ovarian cancer diagnosis (Table IV). Among women, who were younger than 55 when diagnosed with ovarian cancer (of whom 35 case and 62 control subjects where premenopausal at blood donation), there was a direct association between IGF-I concentration and ovarian cancer risk (Table IV). This increase in risk, however, was confined to the highest tertile of IGF-I concentrations. Further adjustments for levels of IGFBP-3 only slightly influenced these results (Table IV). A similar direct association was observed in the group of women who were age 50 or younger at recruitment [OR (95% CI) 1.03 ( ) and 4.82 ( ), p 0.02 for the second and top IGF-I tertile]. There was, however, a significant (about 80%) overlap between these subgroups of young women. Restriction of TABLE II FACTORS FOR CASES AND CONTROL SUBJECTS 1 Cases (n 132) Controls (n 263) p for case-control difference BMI kg/m 2 (range) 25.0 ( ) 26.0 ( ) Age at menarche (range) 12.9 ( ) 12.9 ( ) Full-term pregnancy, % (n) Never 30 (40) 18 (47) Ever 68 (90) 82 (215) Missing 2 (2) 0 (1) OC use Never 62 (82) 55 (144) Ever 23 (31) 30 (79) Missing 14 (19) 15 (40) Age at menopause (range) 50.2 ( ) 48.8 ( ) Smoking, % (n) Never 51 (67) 41 (107) Ex-smoker 23 (31) 25 (67) Current smoker 10 (13) 13 (34) Missing 16 (21) 21 (55) 1 Values are mean (95% CI), adjusted for age and cohort or percentage (number). 2 Paired t-test (the case subject values vs. the means of the matched control subjects). 3 Mantel-Haenzel test.
4 552 LUKANOVA ET AL. Cohort Cases/controls (n) TABLE III AGE AT CANCER DIAGNOSIS OF THE CASE SUBJECTS 1 IGF-I (ng/ml) IGFBP-3 (ng/ml) Cases Controls Cases Controls Diagnosed before age 55 NYUWHS 19/ ( ) ( ) 3,962 (3,709 4,215) 3,770 (3,592 3,949) NSHDS 13/ ( ) ( ) 3,208 (2,472 3,943) 3,228 (2,741 3,716) ORDET 9/ ( ) ( ) 3,971 (3,575 4,368) 3,719 (3,438 3,999) All subjects 41/ ( ) ( ) 3,725 (3,467 3,984) 3,579 (3,397 3,762) Diagnosed at or after age 55 NYUWHS 55/ ( ) ( ) 3,917 (3,721 4,113) 3,881 (3,742 4,019) NSHDS 29/ ( ) ( ) 3,795 (3,383 4,207) 3,822 (3,543 4,102) ORDET 7/ ( ) ( ) 3,651 (3,030 4,272) 3,843 (3,404 4,282) All subjects 91/ ( ) ( ) 3,832 (3,633 4,031) 3,831 (3,676 3,987) 1 Values represent mean (95% CI) IGF-I and IGFBP-3 levels by case/control status and cohort study, adjusted for age at sampling. Peptide TABLE IV RISK OF OVARIAN CANCER BY TERTILES OF IGF-I AND IGFBP-3 1 Tertile T 1 T 2 T 3 p for trend 5 Index case subject diagnosed before age 55 IGF-I (cases/controls) 9/29 12/29 20/23 Unadjusted ( ) 4.73 ( ) 0.02/0.02 Adjusted ( ) 4.97 ( ) 0.03/ 0.02 Adjusted ( ) 4.98 ( ) 0.03/0.02 IGFBP-3 (cases/controls) 6/31 17/23 16/27 Unadjusted ( ) 2.59 ( ) 0.08/0.33 Adjusted ( ) 1.90 ( ) 0.31/ 0.54 Adjusted ( ) 0.87 ( ) 0.79/0.77 Index case subject diagnosed at or after age 55 IGF-I (cases/controls) 28/60 32/57 31/64 Unadjusted ( ) 1.04 ( ) 0.92/ 0.90 Adjusted ( ) 1.04 ( ) 0.92/0.83 Adjusted ( ) 0.94 ( ) 0.88/0.78 IGFBP-3 (cases/controls) 26/58 30/55 29/61 Unadjusted ( ) 1.02 ( ) 0.93/ 0.95 Adjusted ( ) 0.98 ( ) 0.98/0.76 Adjusted ( ) 1.09 ( ) 0.83/ Values are OR (95% CI). 2 Conditional logistic regression on case-control pairs matched for study cohort, age and date at recruitment into the study, menopausal status and day of menstrual cycle for premenopausal women. 3 Adjusted for full-term pregnancy, BMI (in categories 23, 23 25, 25 30, 30) and smoking. 4 Further adjustment of IGF-I models for levels of IGFBP-3 and IGFBP-3 models for levels of IGF-I. 5 Linear trends in ORs over the tertiles by assigning quantitative scores (1, 2, 3)/linear trend calculated for the continuous variable. these analyses to subjects, diagnosed 2 or more years after blood donation, did not influence the strength and the direction of the association between IGF-I levels and ovarian cancer diagnosed before age 55 (data not shown). Due to small number of observations per cohort, the study lacked the statistical power to calculate meaningful tests for interaction between IGF-I concentrations and cohort sub-populations. Among women, who were younger than 55 when diagnosed with ovarian cancer, IGFBP-3 levels appeared to be directly related to an increase in ovarian cancer risk, but there was no evident trend of increase and all confidence intervals included unity. Adjustment of the IGFBP-3 models for levels of IGF-I reduced considerably all point estimates (Table IV). DISCUSSION To our knowledge this is the first epidemiological study to investigate the relationship between prediagnostic circulating IGF-I and IGFBP-3 levels and risk of ovarian cancer. We observed a strong direct association of IGF-I levels with ovarian cancer risk among women who were younger than age 55 at cancer diagnosis. No association of IGF-I with ovarian cancer risk was observed in the study population as a whole, or in women with cancer diagnoses after age 55. IGFBP-3 did not seem to be related to ovarian cancer risk in our study population. Our study is part of an on-going collaborative project between 3 prospective cohorts in New York (USA), Umeå (Sweden) and Milan (Italy) on endogenous hormones and ovarian cancer risk. Pooling the data gave us the possibility to investigate prospectively this comparatively less frequent cancer with reasonable statistical power. One advantage of the nested case control study within a prospective cohort is that cancer case and control subjects originate from the same, well-defined source population, thereby minimizing the risk of control selection biases. Furthermore, prospective studies have the advantage that blood samples are obtained before the clinical manifestation of the disease, so that the observed case control difference in blood hormone levels is unlikely to be an effect of the disease. The direct association of IGF-I with ovarian cancer risk in women younger than age 55 at ovarian cancer diagnosis did not disappear after exclusion of case subjects diagnosed within 2 years after blood donation, suggesting that the observed case control differences were not the result of the presence of latent tumors, sufficiently advanced in stage to influence circulating hormone levels. The mean IGF-I levels differed between the cohorts. We believe that these differences were most likely due to differences in the blood collection, processing or storage conditions among the 3 cohort studies, and used cohort-specific cut-off points to estimate relative risks of ovarian cancer by tertiles of IGF-I. When applying study-wide cut-off points, however, the relative risks for ovarian cancer for IGF-I tertiles in the younger women were of similar magnitude. IGF-I may be involved in ovarian carcinogenesis through several mechanisms. It may exert a direct effect by increasing cell proliferation and inhibition of apoptosis, 17 and experimental stud-
5 IGF-I AND OVARIAN CANCER 553 ies have indeed shown that malignant transformation of ovarian epithelial cells (the cells from which ovarian cancer is believed to originate) can be induced by overexpression of the IGF-1 receptor. 28 These mitogenic and anti-apoptotic effects of IGF-I might be particularly relevant during ovulation related tissue remodeling of the surface epithelium. 29 In addition, IGF-I may also influence ovarian cancer risk through modulation of the synthesis and bioavailability of sex steroid hormones, which have been implicated in ovarian cancer etiology. 4,7 IGF-I has been shown to enhance the activity and expression of enzymes involved in the synthesis of androgens in ovarian stromal tissue in vitro 7,30 32 and to downregulate the hepatic production of SHBG, which determines the free, bioavailable fraction of steroid hormones. 33 The increase in relative risk exclusively among women with diagnosis of ovarian cancer before age 55 may reflect an interaction between elevated IGF-I and the ovarian steroidogenic or ovulatory activity before menopause. Alternatively, it is possible that mean IGF-I levels decline more rapidly with age among women whose levels were initially high, and who were at increased ovarian cancer risk due to the direct effects of IGF-I irrespective of any interactions with ovarian activity. Similar to our observation of an effect of IGF-I on ovarian cancer risk only at a comparatively young age, other studies have shown an association of IGF-I with breast density and breast cancer risk exclusively among premenopausal women and women with relatively early cancer diagnosis. 8,9,34 Unfortunately, our data did not allow us to account for the effect of family history of ovarian cancer in our analyses. Genetic factors are believed to contribute about 40 60% of the variation in endogenous IGF-I levels, but at present, there is no data relating genes conferring increased risk of ovarian cancer (such as BRCA1 or BRCA2) to genes involved in the synthesis and biological activity of IGF-I. Future studies will be necessary to investigate the possible interaction of high-risk genetic background with IGF-I levels. The observed increase in risk with elevated levels of IGFBP-3 in women with ovarian cancer diagnosis before age 55 was not entirely anticipated but coincides with other studies relating IGF-I with cancer risk. 10,25 The concomitant increase in ovarian cancer with levels of both IGF-I and IGFBP-3 might be a reflection of their common regulation by growth hormone, 35 and thus suggests that increased pituitary growth hormone secretion might be at the origin of the elevated IGF-I levels among women at increased ovarian cancer risk. The association of IGF-I with ovarian cancer remained significant after adjustments for levels of IGFBP-3, whereas the confidence intervals of IGFBP-3 models always included unity, and the point estimates for IGFBP-3 were significantly reduced after adjustment for levels of IGF-I. The findings of our study suggest that elevated IGF-I levels may be implicated in the development of ovarian cancer, diagnosed before age 55. These results adjoin ovarian cancer to the group of common tumors in the economically developed countries for which the IGF-I system is believed to play an important etiological role. IGF-I levels are intricately related to nutritional status and energy balance, and might provide a link between nutritional life-style factors such as energy- and protein-dense diets and lack of physical activity and cancer development. 33 ACKNOWLEDGEMENTS Ms. Y. Afanasyeva, Ms. L. Quinones and Ms. D. Masciangelo provided technical assistance in the NYU Women s Health Study; Ms. Å. Ågren and Mr. H. Sjodin helped with the management of the Swedish Biobank database. Mr. D. Achaintre, Ms. J. Bouzac and Ms. B. Vozar contributed to the laboratory analyses and Ms. J. Dehedin in the manuscript preparation. REFERENCES 1. Fathalla MF. Incessant ovulation a factor in ovarian neoplasia? Lancet 1971;2: Gardner W. Hormonal imbalances in tumorigenesis. Cancer Res 1948; 8: Cramer DW, Welch WR. Determinants of ovarian cancer risk. II. Inferences regarding pathogenesis. J Natl Cancer Inst 1983;71: Helzlsouer KJ, Alberg AJ, Gordon GB, Longcope C, Bush TL, Hoffman SC, Comstock GW. Serum gonadotropins and steroid hormones and the development of ovarian cancer. JAMA 1995;274: Ness RB, Cottreau C. Possible role of ovarian epithelial inflammation in ovarian cancer. J Natl Cancer Inst 1999;91: Weiss NS, Cook LS, Farrow DC, Rosenblatt KA. Ovarian cancer. In: Schottenfeld D, Fraumeni FJ, editors. Cancer epidemiology and prevention. 2 ed. Oxford: Oxford University Press; p Risch HA. Hormonal etiology of epithelial ovarian cancer, with a hypothesis concerning the role of androgens and progesterone. J Natl Cancer Inst 1998;90: Hankinson SE, Willett WC, Colditz GA, Hunter DJ, Michaud DS, Deroo B, Rosner B, Speizer FE, Pollak M. Circulating concentrations of insulin-like growth factor-i and risk of breast cancer. Lancet 1998;351: Toniolo P, Bruning PF, Akhmedkhanov A, Bonfrer JM, Koenig KL, Lukanova A, Shore RE, Zeleniuch-Jacquotte A. Serum insulin-like growth factor-i and breast cancer. Int J Cancer 2000;88: Stattin P, Bylund A, Rinaldi S, Biessy C, Dechaud H, Stenman UH, Egevad L, Riboli E, Hallmans G, Kaaks R. Plasma insulin-like growth factor-i, insulin-like growth factor-binding proteins, and prostate cancer risk: a prospective study. J Natl Cancer Inst 2000;92: Chan JM, Stampfer MJ, Giovannucci E, Gann PH, Ma J, Wilkinson P, Hennekens CH, Pollak M. Plasma insulin-like growth factor-i and prostate cancer risk: a prospective study. Science 1998;279: Ma J, Pollak MN, Giovannucci E, Chan JM, Tao Y, Hennekens CH, Stampfer MJ. Prospective study of colorectal cancer risk in men and plasma levels of insulin-like growth factor (IGF)-I and IGF-binding protein-3. J Natl Cancer Inst 1999;91: Palmqvist R, Hallmans G, Rinaldi S, Biessy C, Stenling R, Riboli E, Kaaks R. Plasma IGF-I, IGF-binding protein-3 and risk of colorectal cancer: A prospective study in northern Sweden. Gut 2002;50: Yu H, Rohan T. Role of the insulin-like growth factor family in cancer development and progression. J Natl Cancer Inst 2000;92: Kuroda H, Mandai M, Konishi I, Tsuruta Y, Kusakari T, Kariya M, Fujii S. Human ovarian surface epithelial (OSE) cells express LH/ hcg receptors, and hcg inhibits apoptosis of OSE cells via upregulation of insulin-like growth factor-1. Int J Cancer 2001;91: Resnicoff M, Ambrose D, Coppola D, Rubin R. Insulin-like growth factor-1 and its receptor mediate the autocrine proliferation of human ovarian carcinoma cell lines. Lab Invest 1993;69: Khandwala HM, McCutcheon IE, Flyvbjerg A, Friend KE. The effects of insulin-like growth factors on tumorigenesis and neoplastic growth. Endocr Rev 2000;21: Karasik A, Menczer J, Pariente C, Kanety H. Insulin-like growth factor-i (IGF-I) and IGF-binding protein-2 are increased in cyst fluids of epithelial ovarian cancer. J Clin Endocrinol Metab 1994;78: Conover CA, Hartmann LC, Bradley S, Stalboerger P, Klee GG, Kalli KR, Jenkins RB. Biological characterization of human epithelial ovarian carcinoma cells in primary culture: the insulin-like growth factor system. Exp Cell Res 1998;238: Flyvbjerg A, Mogensen O, Mogensen B, Nielsen OS. Elevated serum insulin-like growth factor-binding protein 2 (IGFBP-2) and decreased IGFBP-3 in epithelial ovarian cancer: correlation with cancer antigen 125 and tumor-associated trypsin inhibitor. J Clin Endocrinol Metab 1997;82: Katsaros D, Yu H, Levesque MA, Danese S, Genta F, Richiardi G, Fracchioli S, Khosravi MJ, Diamandi A, Gordini G, Diamandis EP, Massobrio M. IGFBP-3 in epithelial ovarian carcinoma and its association with clinico-pathological features and patient survival. Eur J Cancer 2001;37: Muti P, Bradlow HL, Micheli A, Krogh V, Freudenheim JL, Schunemann HJ, Stanulla M, Yang J, Sepkovic DW, Trevisan M, Berrino F. Estrogen metabolism and risk of breast cancer: a prospective study of the 2:16 -hydroxyestrone ratio in premenopausal and postmenopausal women. Epidemiology 2000;11: Kato I, Toniolo P, Koenig KL, Kahn A, Schymura M, Zeleniuch- Jacquotte A. Comparison of active and cancer registry-based follow-up for breast cancer in a prospective cohort study. Am J Epidemiol 1999;149:372 8.
6 554 LUKANOVA ET AL. 24. SAS Institute. SAS/STATR User s Guide Version 6. SAS Manual 1990; Kaaks R, Toniolo P, Akhmedkhanov A, Lukanova A, Biessy C, Dechaud H, Rinaldi S, Zeleniuch-Jacquotte A, Shore RE, Riboli E. Serum C-peptide, insulin-like growth factor (IGF)-I, IGF-binding proteins, and colorectal cancer risk in women. J Natl Cancer Inst 2000;92: Goodman GD, Barrett CE. Epidemiology of insulin-like growth factor-i in elderly men and women. The Rancho Bernardo Study. Am J Epidemiol 1997;145: Kaaks R, Soderberg S, Olsson T, Hallmans G, Stattin P. Re: Plasma insulin-like growth factor-i, insulin-like growth factor-binding proteins, and prostate cancer risk: a prospective study. J Natl Cancer Inst 2001;93: Coppola D, Saunders B, Fu L, Mao W, Nicosia SV. The insulin-like growth factor 1 receptor induces transformation and tumorigenicity of ovarian mesothelial cells and down-regulates their Fas-receptor expression. Cancer Res 1999;59: Lund PK. Insulin-like growth factors: gene structure and regulation. In: Kostyo JL, Goodman HM, editors. Hormonal control of growth. 1st ed. New York: Oxford University Press; p Urban RJ, Garmey JC, Shupnik MA, Veldhuis JD. Insulin-like growth factor type I increases concentrations of messenger ribonucleic acid encoding cytochrome P450 cholesterol side-chain cleavage enzyme in primary cultures of porcine granulosa cells. Endocrinology 1990;127: Magoffin DA, Weitsman SR. Insulin-like growth factor-i stimulates the expression of 3 -hydroxysteroid dehydrogenase messenger ribonucleic acid in ovarian theca-interstitial cells. Biol Reprod 1993;48: demoura MD, Choi D, Adashi EY, Payne DW. Insulin-like growth factor-i-mediated amplification of follicle-stimulating hormone-supported progesterone accumulation by cultured rat granulosa cells: enhancement of steroidogenic enzyme activity and expression. Biol Reprod 1997;56: Kaaks R, Lukanova A. Energy balance and cancer: the role of insulin and insulin-like growth factor-i. Proc Nutr Soc 2001;60: Byrne C, Colditz GA, Willett WC, Speizer FE, Pollak M, Hankinson SE. Plasma insulin-like growth factor (IGF) I, IGF-binding protein 3, and mammographic density. Cancer Res 2000;60: Jones JI, Clemmons DR. Insulin-like growth factors and their binding proteins: biological actions. Endocr Rev 1995;16:3 34.
BODY MASS INDEX IN RELATION TO OVARIAN CANCER: AMULTI-CENTRE NESTED CASE-CONTROL STUDY
Int. J. Cancer: 99, 603 608 (2002) 2002 Wiley-Liss, Inc. DOI 10.1002/ijc.10374 BODY MASS INDEX IN RELATION TO OVARIAN CANCER: AMULTI-CENTRE NESTED CASE-CONTROL STUDY Publication of the International Union
More informationBody Mass Index, Serum Sex Hormones, and Breast Cancer Risk in Postmenopausal Women
Body Mass Index, Serum Sex Hormones, and Breast Cancer Risk in Postmenopausal Women Endogenous Hormones and Breast Cancer Collaborative Group Background: Obesity is associated with increased breast cancer
More informationInsulin-like growth factor 1 (IGF1), IGF binding protein 3 (IGFBP3), and breast cancer risk: pooled individual data analysis of 17 prospective studies
Insulin-like growth factor (IGF), IGF binding protein 3 (IGFBP3), and breast cancer risk: pooled individual data analysis of 7 prospective studies The Endogenous Hormones and Breast Cancer Collaborative
More informationPostmenopausal levels of sex hormones and risk of breast carcinoma in situ: Results of a prospective study
Int. J. Cancer: 114, 323 327 (2005) 2004 Wiley-Liss, Inc. Postmenopausal levels of sex hormones and risk of breast carcinoma in situ: Results of a prospective study Anne Zeleniuch-Jacquotte 1,2 *, Yian
More informationEndogenous Sex Hormones and Breast Cancer in Postmenopausal Women: Reanalysis of Nine Prospective Studies
Endogenous Sex Hormones and Breast Cancer in Postmenopausal Women: Reanalysis of Nine Prospective Studies The Endogenous Hormones and Breast Cancer Collaborative Group Background: Reproductive and hormonal
More informationPlasma insulin-like growth factor-1 and binding protein-3 and subsequent risk of prostate cancer in the PSA era q
Cancer Causes and Control (2005) 16:255 262 Ó Springer 2005 DOI 10.1007/s10552-004-3484-8 Plasma insulin-like growth factor-1 and binding protein-3 and subsequent risk of prostate cancer in the PSA era
More informationInsulin-Like Growth Factor I, IGF-Binding Protein 3, and Lung Cancer Risk in a Prospective Study of Men in China
Insulin-Like Growth Factor I, IGF-Binding Protein 3, and Lung Cancer Risk in a Prospective Study of Men in China Stephanie J. London, Jian-Min Yuan, Gregory S. Travlos, Yu-Tang Gao, Ralph E. Wilson, Ronald
More informationInsulin-like growth factor (IGF)-I, IGF binding protein-3, and breast cancer risk: eight years on
COMMENTARY Endocrine-Related Cancer (2006) 13 273 278 Insulin-like growth factor (IGF)-I, IGF binding protein-3, and breast cancer risk: eight years on Andrew G Renehan 1, Michelle Harvie 2 and Anthony
More informationMargaret R. Spitz, 2 Matt J. Barnett, Gary E. Goodman, Mark D. Thornquist, Xifeng Wu, and Michael Pollak
Vol. 11, 1413 1418, November 2002 Cancer Epidemiology, Biomarkers & Prevention 1413 Serum Insulin-like Growth Factor (IGF) and IGF-binding Protein Levels and Risk of Lung Cancer: A Case-Control Study Nested
More informationBreast Cancer The PRECAMA Study. Dr. Isabelle Romieu Head, Section of Nutrition and Metabolism
Breast Cancer The PRECAMA Study Dr. Isabelle Romieu Head, Section of Nutrition and Metabolism Estimated incidence of breast cancer (2008) Age- standardised rates per 100,000 GLOBOCAN 2008 (globocan.iarc.fr)
More informationDoes Hysterectomy Lead to Weight Gain or Does Overweight Lead to Hysterectomy?
Dr Janneke BERECKI D Fitzgerald, J Berecki, R Hockey and A Dobson 1 1 School of Population Health, Faculty of Health Sciences, University of Queensland, Herston, QLD, Australia Does Hysterectomy Lead to
More informationDownloaded from:
Ellingjord-Dale, M; Vos, L; Tretli, S; Hofvind, S; Dos-Santos-Silva, I; Ursin, G (2017) Parity, hormones and breast cancer subtypes - results from a large nested case-control study in a national screening
More informationDiabetes Mellitus and Breast Cancer
Masur K, Thévenod F, Zänker KS (eds): Diabetes and Cancer. Epidemiological Evidence and Molecular Links. Front Diabetes. Basel, Karger, 2008, vol 19, pp 97 113 Diabetes Mellitus and Breast Cancer Ido Wolf
More informationBreast Cancer Risk in Patients Using Hormonal Contraception
Breast Cancer Risk in Patients Using Hormonal Contraception Bradley L. Smith, Pharm.D. Smith.bradley1@mayo.edu Pharmacy Ground Rounds Mayo Clinic Rochester April 3 rd, 2018 2017 MFMER slide-1 Presentation
More informationThis is an author produced version of an article that appears in:
This is an author produced version of an article that appears in: BRITISH JOURNAL OF CANCER The internet address for this paper is: https://publications.icr.ac.uk/2459/ Published text: N E Allen, A W Roddam,
More informationDietary Fatty Acids and the Risk of Hypertension in Middle-Aged and Older Women
07/14/2010 Dietary Fatty Acids and the Risk of Hypertension in Middle-Aged and Older Women First Author: Wang Short Title: Dietary Fatty Acids and Hypertension Risk in Women Lu Wang, MD, PhD, 1 JoAnn E.
More informationStrategies for data analysis: case-control studies
Strategies for data analysis: case-control studies Gilda Piaggio UNDP/UNFPA/WHO/World Bank Special Programme of Research, Development and Research Training in Human Reproduction World Health Organization
More informationIncreased risk of cancer with anti-diabetes drugs? : pros
24 th Spring Congress of Korean Diabetes Association Increased risk of cancer with anti-diabetes drugs? : pros Nan Hee Kim, MD, Ph.D. Professor Korea University Medical School Contents Diabetes and cancer
More informationThe Ecology of Breast Cancer
The Ecology of Breast Cancer The Promise of Prevention and the Hope for Healing By Ted Schettler MD, MPH October 2013 This work is licensed under a Creative Commons Attribution Non-Commerical NoDerivs
More informationMammographic density and risk of breast cancer by tumor characteristics: a casecontrol
Krishnan et al. BMC Cancer (2017) 17:859 DOI 10.1186/s12885-017-3871-7 RESEARCH ARTICLE Mammographic density and risk of breast cancer by tumor characteristics: a casecontrol study Open Access Kavitha
More informationCirculating sex hormones and breast cancer risk factors in postmenopausal women: reanalysis of 13 studies
British Journal of Cancer (2011) 105, 709 722 All rights reserved 0007 0920/11 www.bjcancer.com Circulating sex hormones and breast cancer risk factors in postmenopausal women: reanalysis of 13 studies
More informationAssociation between serum IGF-1 and diabetes mellitus among US adults
Diabetes Care Publish Ahead of Print, published online July 16, 2010 Association between serum IGF-1 and diabetes mellitus among US adults Running title: Serum IGF-1 and diabetes mellitus Srinivas Teppala
More informationIJC International Journal of Cancer
IJC International Journal of Cancer Changes in mammographic density over time in breast cancer cases and women at high risk for breast cancer Meghan E. Work 1, Laura L. Reimers 1, Anne S. Quante 1,2,3,
More informationNon-Genomic Biomarkers of Risk in Ovarian Cancer
Non-Genomic Biomarkers of Risk in Ovarian Cancer The Harvard community has made this article openly available. Please share how this access benefits you. Your story matters Citation Pinheiro, Simone P.,
More informationNo effect of exercise on insulin-like growth factor (IGF)-1, insulin and glucose in young women participating in a 16-week randomized controlled trial
University of North Florida UNF Digital Commons Nutrition and Dietetics Faculty Publications Department of Nutrition and Dietetics 11-2010 No effect of exercise on insulin-like growth factor (IGF)-1, insulin
More informationPostmenopausal hormone therapy and cancer risk
International Congress Series 1279 (2005) 133 140 www.ics-elsevier.com Postmenopausal hormone therapy and cancer risk P. Kenemans*, R.A. Verstraeten, R.H.M. Verheijen Department of Obstetrics and Gynaecology,
More informationPERIMENOPAUSE. Objectives. Disclosure. The Perimenopause Perimenopause Menopause. Definitions of Menopausal Transition: STRAW.
PERIMENOPAUSE Patricia J. Sulak, MD Founder, Living WELL Aware LLC Author, Should I Fire My Doctor? Author, Living WELL Aware: Eleven Essential Elements to Health and Happiness Endowed Professor Texas
More informationUrinary Melatonin Levels and Risk of Postmenopausal Breast Cancer in the Women's Health Initiative Observational Study
University of Massachusetts Amherst ScholarWorks@UMass Amherst Masters Theses 1911 - February 2014 2012 Urinary Melatonin Levels and Risk of Postmenopausal Breast Cancer in the Women's Health Initiative
More informationDietary glycemic index, glycemic load and ovarian cancer risk: a case control study in Italy
Original article Annals of Oncology 14: 78 84, 2003 DOI: 10.1093/annonc/mdg022 Dietary glycemic index, glycemic load and ovarian cancer risk: a case control study in Italy L. S. A. Augustin 1,2, J. Polesel
More informationSerum levels of 25-OH vitamin D, folic acid and testosterone in patients with breast cancer: a case control study
Asian Biomedicine Vol. 5 No. 5 October 2011; 663-667 Brief communication (Original) DOI: 10.5372/1905-7415.0505.097 Serum levels of 25-OH vitamin D, folic acid and testosterone in patients with breast
More information2. Studies of Cancer in Humans
346 IARC MONOGRAPHS VOLUME 72 2. Studies of Cancer in Humans 2.1 Breast cancer 2.1.1 Results of published studies Eight studies have been published on the relationship between the incidence of breast cancer
More informationCancer Survivors: - Asian Perspective
Cancer Survivors: What we Know, What we Need to Know - Asian Perspective Prof. Josette Sin-yee Chor School of Public Health and Primary Care The Chinese University of Hong Kong Asia Varying incidence of
More informationEDUCATIONAL COMMENTARY CA 125. Learning Outcomes
EDUCATIONAL COMMENTARY CA 125 Learning Outcomes Upon completion of this exercise, participants will be able to: discuss the use of CA 125 levels in monitoring patients undergoing treatment for ovarian
More informationA Polymorphic Locus in the Promoter Region of the IGFBP3 Gene Is Related to Mammographic Breast Density
Cancer Epidemiology, Biomarkers & Prevention 573 A Polymorphic Locus in the Promoter Region of the IGFBP3 Gene Is Related to Mammographic Breast Density Joe H. Lai, 1 Danny Vesprini, 1 William Zhang, 1
More informationThe Breast Cancer Family Registry: Description of Resource and some Applications
The Breast Cancer Family Registry: Description of Resource and some Applications Mary Beth Terry, PhD Associate Professor Department of Epidemiology Mailman School of Public Health Overview of Talk Description
More informationChapter 2 The Link Between Obesity and Breast Cancer Risk: Epidemiological Evidence
Chapter 2 The Link Between Obesity and Breast Cancer Risk: Epidemiological Evidence 2.1 BMI and Breast Cancer Risk BMI is routinely used to qualify an individual s adiposity, yet it is simply a measure
More informationSupplementary Table 4. Study characteristics and association between OC use and endometrial cancer incidence
Supplementary Table 4. characteristics and association between OC use and endometrial cancer incidence a Details OR b 95% CI Covariates Region Case-control Parslov, 2000 (1) Danish women aged 25 49 yr
More information1. Collaborative Group on Epidemiological Studies of Ovarian Cancer. Ovarian cancer and oral contraceptives: collaborative reanalysis of data from 45
1 2 3 1. Collaborative Group on Epidemiological Studies of Ovarian Cancer. Ovarian cancer and oral contraceptives: collaborative reanalysis of data from 45 epidemiological studies including 23,257 women
More informationThe New England Journal of Medicine
The New England Journal of Medicine Copyright, 1997, by the Massachusetts Medical Society VOLUME 336 J UNE 19, 1997 NUMBER 25 POSTMENOPAUSAL HORMONE THERAPY AND MORTALITY FRANCINE GRODSTEIN, SC.D., MEIR
More informationEvidence tables from the systematic literature search for premature ovarian insufficiency surveillance in female CAYA cancer survivors.
Evidence tables from the systematic literature search for premature ovarian insufficiency surveillance in female CAYA cancer survivors. Who needs surveillance? Chiarelli et al. Early menopause and Infertility
More informationS e c t i o n 4 S e c t i o n4
Section 4 Diet and breast cancer has been investigated extensively, although the overall evidence surrounding the potential relation between dietary factors and breast cancer carcinogenesis has resulted
More information758 Vol. 11, , August 2002 Cancer Epidemiology, Biomarkers & Prevention
758 Vol. 11, 758 766, August 2002 Cancer Epidemiology, Biomarkers & Prevention Plasma Concentrations of Insulin-like Growth Factors among Healthy Adult Men and Postmenopausal Women: Associations with Body
More informationRisk of Ovarian Cancer Associated with BMI Varies by Menopausal Status
The Journal of Nutrition Nutritional Epidemiology Risk of Ovarian Cancer Associated with BMI Varies by Menopausal Status Gregory P. Beehler, 1 Manveen Sekhon, 3 Julie A. Baker, 3 Barbara E. Teter, 4 Susan
More informationTitle: A Prospective Study of Dietary Selenium Intake and Risk of Type 2 Diabetes
Author's response to reviews Title: A Prospective Study of Dietary Selenium Intake and Risk of Type 2 Diabetes Authors: Saverio Stranges (S.Stranges@warwick.ac.uk) Sabina Sieri (Sabina.Sieri@istitutotumori.mi.it)
More informationIJC International Journal of Cancer
IJC International Journal of Cancer Active cigarette smoking and risk of breast cancer Chelsea Catsburg 1, Anthony B. Miller 2 and Thomas E. Rohan 1 1 Department of and Population Health, Albert Einstein
More informationGynecology-endocrinology
Gynecology-endocrinology FERTILITY AND STERILITY Copyright 1996 American Society for Reproductive Medicine Printed on acid-free paper in U. S. A. Human menopausal gonadotropin and the risk of epithelial
More informationHemoglobin A1c and the relationship to stage and grade of endometrial cancer
DOI 10.1007/s00404-012-2455-7 GYNECOLOGIC ONCOLOGY Hemoglobin A1c and the relationship to stage and grade of endometrial cancer Erin E. Stevens Sarah Yu Melanie Van Sise Tana Shah Pradhan Vanessa Lee Michael
More informationDietary Carbohydrates, Fiber, and Breast Cancer Risk
American Journal of Epidemiology Copyright 2004 by the Johns Hopkins Bloomberg School of Public Health All rights reserved Vol. 159, No. 8 Printed in U.S.A. DOI: 10.1093/aje/kwh112 Dietary Carbohydrates,
More informationEPIDEMIOLOGICAL STUDY ON THE RELATION BETWEEN BREAST CANCER RISK AND ENDOGENOUS HORMONAL STATUS OF WOMEN IN TRANSYLVANIA COUNTY
EPIDEMIOLOGICAL STUDY ON THE RELATION BETWEEN BREAST CANCER RISK AND ENDOGENOUS HORMONAL STATUS OF WOMEN IN TRANSYLVANIA COUNTY BOGDANA NASUI, NINA CIUCIUC, DELIA HERGHEA¹, MONICA POPA Department of Communitary
More informationSurrogates of Long-Term Vitamin D Exposure and Ovarian Cancer Risk in Two Prospective Cohort Studies
Cancers 2013, 5, 1577-1600; doi:10.3390/cancers5041577 Article OPEN ACCESS cancers ISSN 2072-6694 www.mdpi.com/journal/cancers Surrogates of Long-Term Vitamin D Exposure and Ovarian Cancer Risk in Two
More informationOlio di oliva nella prevenzione. Carlo La Vecchia Università degli Studi di Milano Enrico Pira Università degli Studi di Torino
Olio di oliva nella prevenzione della patologia cronicodegenerativa, con focus sul cancro Carlo La Vecchia Università degli Studi di Milano Enrico Pira Università degli Studi di Torino Olive oil and cancer:
More informationHormone Balance - Female Report SAMPLE. result graph based on Luteal Phase. result graph based on Luteal Phase
Patient Name: Patient DOB: Gender: Physician: Test Hormone Balance - Female Report SAMPLE Grote, Mary Jane Batch Number: B6437 2/16/1954 Accession Number: N52281 F Date Received: 2/3/2015 Any Lab Test
More informationSERUM CONCENTRATIONS OF IGF-I, IGFBP-3 AND C-PEPTIDE AND RISK OF HYPERPLASIA AND CANCER OF THE BREAST IN POSTMENOPAUSAL WOMEN
Int. J. Cancer: 108, 773 779 (2004) 2003 Wiley-Liss, Inc. Publication of the International Union Against Cancer SERUM CONCENTRATIONS OF IGF-I, IGFBP-3 AND C-PEPTIDE AND RISK OF HYPERPLASIA AND CANCER OF
More informationHormones and cancer -risks and benefits
Hormones and cancer -risks and benefits Terhi Piltonen M.D., PhD., Associate Professor Consultant, Clinical Researcher for the Finnish Medical Foundation Department of Obstetrics and Gynecology PEDEGO
More information(2015) : 85 (5) ISSN
Boniol, Mathieu and Autier, Philippe and Perrin, Paul and Boyle, Peter (2015) Variation of prostate-specific antigen value in men and risk of high-grade prostate vancer : analysis of the prostate, lung,
More informationCalcium and Cancer Prevention and Treatment
Calcium and Cancer Prevention and Treatment By: Corrine VanDeMaele and Lindsay Wexler Calcium - Ca - Ca++ Most abundant mineral in human body Functions: Supports structure of bone and teeth Muscle contraction
More informationSERUM COMPONENTS AND RISK OF CANCER - I
IGF-I, IGF-II, IGF Binding Protein-3, and Risk of Colorectal Cancer: a Nested Case-control Study in the JACC Study SERUM COMPONENTS AND RISK OF CANCER - I Insulin-like Growth Factor (IGF)-I, IGF-II, IGF
More informationREPRODUCTIVE ENDOCRINOLOGY
FERTILITY AND STERILITY VOL. 70, NO. 6, DECEMBER 1998 Copyright 1998 American Society for Reproductive Medicine Published by Elsevier Science Inc. Printed on acid-free paper in U.S.A. REPRODUCTIVE ENDOCRINOLOGY
More information5. Summary of Data Reported and Evaluation
168 IARC MONOGRAPHS VOLUME 91 5. Summary of Data Reported and Evaluation 5.1 Exposure data The first oral hormonal contraceptives that were found to inhibit both ovulation and implantation were developed
More informationPROSPECTIVE STUDIES HAVE
ORIGINAL CONTRIBUTION Serum Estradiol Level and Risk of Breast Cancer During Treatment With Steven R. Cummings, MD Tu Duong, MA Emily Kenyon, PhD Jane A. Cauley, DrPH Malcolm Whitehead, MB,BS, FRCOG Kathryn
More informationREPRODUCTIVE FACTORS, ORAL CONTRACEPTIVE USE AND BREAST CANCER SURVIVAL IN YOUNG WOMEN. Katrina F. Trivers
REPRODUCTIVE FACTORS, ORAL CONTRACEPTIVE USE AND BREAST CANCER SURVIVAL IN YOUNG WOMEN Katrina F. Trivers A dissertation submitted to the faculty of the University of North Carolina at Chapel Hill in partial
More informationAssociation between serum 25-hydroxyvitamin D and depressive symptoms in Japanese: analysis by survey season
University of Massachusetts Amherst From the SelectedWorks of Kalpana Poudel-Tandukar Summer August 19, 2009 Association between serum 25-hydroxyvitamin D and depressive symptoms in Japanese: analysis
More informationReproducibility of a food frequency questionnaire used in the New York University Women's Health Study: Effect of self-selection by study subjects
European Journal of Clinical Nutrition (1997) 51, 437±442 ß 1997 Stockton Press. All rights reserved 0954±3007/97 $12.00 Reproducibility of a food frequency questionnaire used in the New York University
More informationCancer after ART. A Dutch nationwide historic cohort of women who received IVF treatment in the
1 Cancer after ART Curt Burger, The Netherlands A Dutch nationwide historic cohort of 19.158 women who received IVF treatment in the Netherlands between 1983 and 1995, and a comparison group of 5.950 subfertile
More informationNIH Public Access Author Manuscript Cancer Epidemiol Biomarkers Prev. Author manuscript; available in PMC 2012 May 1.
NIH Public Access Author Manuscript Published in final edited form as: Cancer Epidemiol Biomarkers Prev. 2011 May ; 20(5): 934 938. doi:10.1158/1055-9965.epi-11-0138. Rotating night shift work and risk
More informationThe Role of Observational Studies. Edward Giovannucci, MD, ScD Departments of Nutrition and Epidemiology
The Role of Observational Studies Edward Giovannucci, MD, ScD Departments of Nutrition and Epidemiology Disclosure Information As required, I would like to report that I have no financial relationships
More informationObservational Study Designs. Review. Today. Measures of disease occurrence. Cohort Studies
Observational Study Designs Denise Boudreau, PhD Center for Health Studies Group Health Cooperative Today Review cohort studies Case-control studies Design Identifying cases and controls Measuring exposure
More informationLevels of Estrogen and Progesterone in postmenopausal Breast cancer patients
International Journal of Interdisciplinary and Multidisciplinary Studies (IJIMS), 2016, Vol 3, No.4,15-19. 15 Available online at http://www.ijims.com ISSN: 2348 0343 Levels of Estrogen and Progesterone
More information3. BACKGROUND AND RATIONALE
CHILDHOOD CANCER SURVIVOR STUDY Revised Analysis Concept Proposal 10-17 October 12, 2011 1. STUDY TITLE: Growth Hormone Exposure as a risk factor for the development of Subsequent Central Nervous System
More informationIs It Time To Implement Ovarian Cancer Screening?
Is It Time To Implement Ovarian Cancer Screening? Prof Dr Samet Topuz Istanbul Medıcal Faculty Department Of Obstetrics and Gynecology ESGO Prevention in Gynaecological Malignancies September 08 2016 Antalya
More informationCANCER EPIDEMIOLOGY AND PATHOGENESIS (EPID 770) FALL 2009
CANCER EPIDEMIOLOGY AND PATHOGENESIS (EPID 770) FALL 2009 Tues/Thurs 12:30 1:45, McGavran Greenberg 1304 Instructor: Office: Melissa Troester, Ph.D., M.P.H. 2104H McGavran Greenberg Phone: (919) 966 7408
More informationInsulin-Like Growth Factor 1 and Prostate Cancer Risk: a Population-Based, Case Control Study
Insulin-Like Growth Factor 1 and Prostate Cancer Risk: a Population-Based, Case Control Study Alicja Wolk, Christos S. Mantzoros, Swen-Olof Andersson, Reinhold Bergström, Lisa B. Signorello, Pagona Lagiou,
More informationDIABETES, PHYSICAL ACTIVITY AND ENDOMETRIAL CANCER. Emilie Friberg
Division of Nutritional Epidemiology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden, 2006 DIABETES, PHYSICAL ACTIVITY AND ENDOMETRIAL CANCER Emilie Friberg Stockholm 2006
More informationThe 6 th Scientific Meeting of the Asia Pacific Menopause Federation
Predicting the menopause The menopause marks the end of ovarian follicular activity and is said to have occurred after 12 months amenorrhoea. The average age of the menopause is between 45 and 60 years
More informationDietary Fatty acids and Cancer: is there a link?
Dietary Fatty acids and Cancer: is there a link? Veronique Chajes, PhD International Agency for Research on Cancer & Isabelle Romieu, MD, MPH, ScD Instituto Nacional de Salud Publica 1 Declaración de Intereses:
More informationComparison And Application Of Methods To Address Confounding By Indication In Non- Randomized Clinical Studies
University of Massachusetts Amherst ScholarWorks@UMass Amherst Masters Theses 1911 - February 2014 Dissertations and Theses 2013 Comparison And Application Of Methods To Address Confounding By Indication
More informationPrimary peritoneal and ovarian cancers: an epidemiological comparative analysis
Cancer Causes Control (2010) 21:991 998 DOI 10.1007/s10552-010-9525-6 ORIGINAL PAPER Primary peritoneal and ovarian cancers: an epidemiological comparative analysis Delores J. Grant Patricia G. Moorman
More informationTreatment issues for women with BRCA germline mutation
Treatment issues for women with BRCA germline mutation Overview Fertility and reproductive lifespan The impact of reproductive life on breast and ovarian cancer risk Screening recommendations during pregnancy
More informationMammographic density and breast cancer risk: a mediation analysis
Rice et al. Breast Cancer Research (2016) 18:94 DOI 10.1186/s13058-016-0750-0 RESEARCH ARTICLE Open Access Mammographic density and breast cancer risk: a mediation analysis Megan S. Rice 1*, Kimberly A.
More informationLow-Fat Dietary Pattern Intervention Trials for the Prevention of Breast and Other Cancers
Low-Fat Dietary Pattern Intervention Trials for the Prevention of Breast and Other Cancers Ross Prentice Fred Hutchinson Cancer Research Center and University of Washington AICR, November 5, 2009 Outline
More informationPOSTMENOPAUSAL ESTROGEN USE
ORIGINAL CONTRIBUTION Estrogen Replacement Therapy and Ovarian Cancer Mortality in a Large Prospective Study of US Women Carmen Rodriguez, MD, MPH Alpa V. Patel, MPH Eugenia E. Calle, PhD Eric J. Jacob,
More informationAnthropometric measures and serum estrogen metabolism in postmenopausal women: the Women s Health Initiative Observational Study
Anthropometric measures and serum estrogen metabolism in postmenopausal women: the Women s Health Initiative Observational Study The Harvard community has made this article openly available. Please share
More informationTiming of Menarche and First Full-Term Birth in Relation to Breast Cancer Risk
American Journal of Epidemiology ª The Author 2007. Published by the Johns Hopkins Bloomberg School of Public Health. All rights reserved. For permissions, please e-mail: journals.permissions@oxfordjournals.org.
More informationEpidemiology and Genetics, National Cancer Institute, Bethesda, MD, USA; 2 Department of
Quantifying the Role of Circulating Unconjugated Estradiol in Mediating the Body Mass Index- Breast Cancer Association Catherine Schairer 1, Barbara J. Fuhrman 2, Jennifer Boyd-Morin 3, Jeanine M. Genkinger
More informationEFFECT OF SMOKING ON BODY MASS INDEX: A COMMUNITY-BASED STUDY
ORIGINAL ARTICLE. EFFECT OF SMOKING ON BODY MASS INDEX: A COMMUNITY-BASED STUDY Pragti Chhabra 1, Sunil K Chhabra 2 1 Professor, Department of Community Medicine, University College of Medical Sciences,
More informationDiseases of the breast (2 of 2) Breast cancer
Diseases of the breast (2 of 2) Breast cancer Epidemiology & etiology The most common type of cancer & the 2 nd most common cause of cancer death in women 1 of 8 women in USA Affects 7% of women Peak at
More informationHormone replacement therapy and breast density after surgical menopause
Hormone replacement therapy and breast density after surgical menopause Freya Schnabel*; Sarah Pivo; Esther Dubrovsky; Jennifer Chun; Shira Schwartz; Amber Guth; Deborah Axelrod Department of Surgery,
More informationTUMOR M ARKERS MARKERS
TUMOR MARKERS M.Shekarabi IUMS Definition Many cancers are associated with the abnormal production of some molecules l which h can be measured in plasma. These molecules are known as tumor markers. A good
More informationRecreational physical activity and risk of triple negative breast cancer in the California Teachers Study
Ma et al. Breast Cancer Research (2016) 18:62 DOI 10.1186/s13058-016-0723-3 RESEARCH ARTICLE Open Access Recreational physical activity and risk of triple negative breast cancer in the California Teachers
More informationRelationship Between Caffeine Intake and Plasma Sex Hormone Concentrations in Premenopausal and Postmenopausal Women
Relationship Between Caffeine Intake and Plasma Sex Hormone Concentrations in Premenopausal and Postmenopausal Women Joanne Kotsopoulos, PhD 1 ; A. Heather Eliassen, ScD 1 ; Stacey A. Missmer, ScD 1,2,3
More informationHost Factors that Increase Breast Cancer Risk
Host Factors that Increase Breast Cancer Risk 30 th Annual Miami Breast Cancer Conference March 7-10, 2013 Debu Tripathy, MD Professor of Medicine University of Southern California Norris Comprehensive
More informationMitochondrial DNA Haplogroups and Breast Cancer Risk Factors in the Avon Longitudinal Study of Parents and Children (ALSPAC)
Article Mitochondrial DNA Haplogroups and Breast Cancer Risk Factors in the Avon Longitudinal Study of Parents and Children (ALSPAC) Vivienne Riley 1, A Mesut Erzurumluoglu 2,3, Santiago Rodriguez 3 and
More information3 cell types in the normal ovary
Ovarian tumors 3 cell types in the normal ovary Surface (coelomic epithelium) the origin of the great majority of ovarian tumors (neoplasms) 90% of malignant ovarian tumors Totipotent germ cells Sex cord-stromal
More information8/10/2012. Education level and diabetes risk: The EPIC-InterAct study AIM. Background. Case-cohort design. Int J Epidemiol 2012 (in press)
Education level and diabetes risk: The EPIC-InterAct study 50 authors from European countries Int J Epidemiol 2012 (in press) Background Type 2 diabetes mellitus (T2DM) is one of the most common chronic
More informationMilk and lactose intakes and ovarian cancer risk in the Swedish Mammography Cohort 1 3
Milk and lactose intakes and ovarian cancer risk in the Swedish Mammography Cohort 1 3 Susanna C Larsson, Leif Bergkvist, and Alicja Wolk ABSTRACT Background: High intakes of dairy products and of the
More informationUtilization of BRCA Testing. Breast and Ovarian Cancer in Texas
Utilization of BRCA Testing in Older Ode Women with Breast and Ovarian Cancer in Texas Ana M. Rodriguez, MD Assistant Professor Department of Obstetrics and Gynecology University of Texas Medical Branch
More informationORIGINAL INVESTIGATION. C-Reactive Protein Concentration and Incident Hypertension in Young Adults
ORIGINAL INVESTIGATION C-Reactive Protein Concentration and Incident Hypertension in Young Adults The CARDIA Study Susan G. Lakoski, MD, MS; David M. Herrington, MD, MHS; David M. Siscovick, MD, MPH; Stephen
More informationLeveraging Prospective Cohort Studies to Advance Colorectal Cancer Prevention, Treatment and Biology
Leveraging Prospective Cohort Studies to Advance Colorectal Cancer Prevention, Treatment and Biology Charles S. Fuchs, MD, MPH Director, Yale Cancer Center Physician-in-Chief, Smilow Cancer Hospital New
More information