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  • Rashidkhani, B., et al. (författare)
  • Alcohol consumption and risk of renal cell carcinoma : a prospective study of Swedish women
  • 2005
  • Ingår i: International Journal of Cancer. - Hoboken, USA : John Wiley & Sons. - 0020-7136 .- 1097-0215. - 0020-7136 (Print) 0020-7136 (Linking) ; 117:5, s. 848-853
  • Tidskriftsartikel (refereegranskat)abstract
    • <p>Previous literature, although not consistent, suggests that moderate alcohol consumption might be associated with decreased risk of renal cell carcinoma (RCC) in women. Thus, we examined the association between alcohol intake and the incidence of RCC by analyzing data from the Swedish Mammography Cohort, a population-based prospective cohort of 59,237 women, aged 40-76 years, who, at baseline in 1987-1990, were cancer free and had completed a food-frequency questionnaire including questions about alcohol consumption. Through June 30, 2004, 132 incident cases of RCC were diagnosed. We used the Cox proportional hazards model to estimate age and body mass index (BMI) adjusted rate ratios (RRs) and their 95% confidence intervals (CIs). Women who consumed &gt;4.3 grams per day of alcohol (ethanol) had nonsignificantly lower risk of RCC than did women who consumed &lt;2.5 g/d (RR = 0.71, 95% CI 0.42-1.19); among women &gt; or = 55 years of age at entry into the cohort, corresponding risk estimates were RR = 0.33, 95% CI 0.10-1.05, p for trend = 0.04 and among women with BMI &gt;25 kg/m2, RR = 0.30, 95% CI 0.09-0.97, p for trend = 0.04. Consistent with these findings, women who drank 1 or more servings of total alcoholic beverages per week had lower RCC risk than did women who drank less (RR = 0.62, 95% CI 0.41-0.94); the corresponding estimate for women &gt; or = 55 years of age was RR = 0.44, 95% CI 0.22-0.88. Results from our prospective cohort study of middle-aged and elderly women indicate that moderate alcohol consumption may be associated with decreased risk of RCC.</p>
  • Smans, Karine A, et al. (författare)
  • Bispecific antibody-mediated lysis of primary cultures of ovarian carcinoma cells using multiple target antigens
  • 1999
  • Ingår i: International Journal of Cancer. - 0020-7136 .- 1097-0215. ; 83:2, s. 270-277
  • Tidskriftsartikel (refereegranskat)abstract
    • <p>We have shown previously that a bispecific antibody (BsAb) directed against both germ-cell alkaline phosphatase (GCAP) and the CD3 complex on mouse T cells could effectively eliminate GCAP-positive tumor cells in vivo using an immunocompetent mouse model. However, some GCAP-negative tumor cells were still able to grow, suggesting that BsAb therapy, when used in a clinical setting, could benefit from targeting several tumor markers to prevent outgrowth of tumor cells lacking a targeted marker. To test this hypothesis, we developed an in vitro model based on primary human ovarian carcinoma (OC) cultures and BsAbs directed against human T cells and several tumor markers [placental alkaline phosphatase (PLAP), GCAP, folate-binding protein (FBP) and CA19.9]. OC cells, isolated from primary tumors, were co-cultured with human peripheral blood mononuclear cells in the presence or absence of various concentrations of BsAbs against PLAP/GCAP, FBP and CA19.9 administered separately or in combination. Results derived from 18 primary OC samples showed that the combination treatment was better than or equally effective as the best single BsAB treatment in 60% of cases. Sometimes targeting FBP, PLAP/GCAP or CA19.9 alone was superior to targeting all simultaneously. Combining each BsAb with a low dose of IL-2 was always beneficial. These results indicate that before using a specific BsAb in the clinic, it is important to determine the optimal BsAb for each patient using this in vitro assay on cells from the removed tumor mass.</p>
  • Cederquist, Kristina, et al. (författare)
  • A population based cohort study of patients with multiple colon and endometrial cancer: correlation of microsatellite instability (MSI) staus, age at diagnosis and cancer risk
  • 2001
  • Ingår i: International Journal of Cancer. - 0020-7136 .- 1097-0215. ; 91:4, s. 486-491
  • Tidskriftsartikel (refereegranskat)abstract
    • <p>Hereditary non-polyposis colorectal cancer, HNPCC, is an autosomal dominant condition predisposing to cancers of primarily the colorectum and the endometrium. The aim of our study was to identify persons at a high risk of hereditary colorectal cancer and to estimate their risk of colon and other HNPCC-associated tumours. Family histories of cancer were obtained on 89 persons with double primary (DP) cancers of the colon and the endometrium. The cancer risks in their 649 first-degree-relatives (FDR) were analysed. The microsatellite instability (MSI) status of the tumour of the proband was also analysed and the cancer risks were estimated in relation to MSI status and age at diagnosis in the proband (over or under 50 years). The overall standardised incidence ratio (SIR) was 1.69 (95% CI; 1.39-2.03). In the =50-year-old cohort the SIR was 2.67 (95% CI; 2.08-3.38). Colon, rectal and uterus cancer exhibited significantly increased risks. This risk was further increased in the =50-year-old MSI positive families. Several =50-year-old MSI negative HNPCC-like families with increased risks were also identified. In conclusion a FDR to a person with a DP cancer of the colorectum or the colon/endometrium have a significantly increased risk of having a colorectal or other HNPCC-associated cancers if the proband is diagnosed with one of the cancers before age 50. These families are candidates for genetic counselling and colorectal screening programmes. Mutations in mismatch repair genes can explain some of the increased risk in these families, but mutations in MSI negative families are probably due to other colon cancer susceptibility genes not yet described. Copyright 2001 Wiley-Liss, Inc.</p>
  • Gentile, Massimiliano, et al. (författare)
  • Deletion mapping of chromosome segment 11q24-q25, exhibiting extensive allelic loss in early onset breast cancer
  • 2001
  • Ingår i: International Journal of Cancer. - 0020-7136 .- 1097-0215. ; 92:2, s. 208-213
  • Tidskriftsartikel (refereegranskat)abstract
    • <p>Frequent allelic deletions at chromosome 11q24-q25 have been described in both early and late onset breast cancers, suggesting the existence of a gene locus implicated in the initiation and/or progression of the disease. In the present study we fine mapped this region further by loss of heterozygosity (LOH) analysis in a population of early onset breast cancer cases (n = 102, 22 to 36 years old). Loss of chromosomal material was assessed for possible association with patient survival as well as Nottingham histologic grade (NHG). Additionally, we investigated the involvement of the 11q24-q25 locus in a group of familial breast cancer cases with no detectable BRCA1 or BRCA2 gene alterations (n = 32, ages 28 to 40 years). Among the consecutive patients, extensive LOH was observed for all markers at 11q24-q25, with frequencies ranging from 42% to 54%. Deletion at the D11S4125 marker was found to be associated with reduced survival (<em>p</em> = 0.026), whereas the adjacent D11S387 marker correlated with higher histologic grade (<em>p</em> = 0.042). In the familial cases, the most telomeric markers showed substantially lower proportions of LOH, ranging from 10% to 21%. Comparison of the two patient groups demonstrated that this difference in LOH frequency was statistically significant for the D11S4098, D11S968, D11S387 and D11S4125 markers (<em>p</em> = 0.020, <em>p</em> = 0.029, <em>p</em> = 0.0070 and <em>p</em> = 0.0030, respectively). We conclude that 11q25 may harbor a gene implicated in early onset breast cancer. Our data suggest that the most probable position for this locus is defined by the markers D11S387 and D11S4125 and furthermore that it may play a less significant role in familial breast cancer cases not linked to either of the BRCA genes.</p>
  • Michels, Karin B., et al. (författare)
  • Dietary antioxidant vitamins, retinol, and breast cancer incidence in a cohort of Swedish women
  • 2001
  • Ingår i: International Journal of Cancer. - 0020-7136 .- 1097-0215. ; 91:4, s. 563-567
  • Tidskriftsartikel (refereegranskat)abstract
    • <p>Dietary antioxidant vitamins and retinol have been proposed to be protective against breast cancer on the basis of their ability to reduce oxidative DNA damage and their role in cell differentiation. Epidemiologic studies have not been convincing in supporting this hypothesis, but women with high exposure to free radicals and oxidative processes have not been specifically considered. We explored these issues in the Swedish Mammography Screening Cohort, a large population-based prospective cohort study in Sweden that comprised 59,036 women, 40-76 years of age, who were free of cancer at baseline and who had answered a validated 67-item food frequency questionnaire. During 508,267 person-years of follow-up, 1,271 cases of invasive breast cancer were diagnosed. Cox proportional hazards models were used to obtain hazard ratios (HRs) and 95% confidence intervals (CIs). There was no overall association between intake of ascorbic acid, beta-carotene, retinol or vitamin E and breast cancer incidence. High intake of ascorbic acid was inversely related to breast cancer incidence among overweight women (HR=0.61; 95% CI 0.45-0.82, for highest quintile of intake among women with body mass index&gt;25 kg/m(2)) and women with high consumption of linoleic acid (HR=0.72; 95% CI 0.52-1.02, for highest quintile of ascorbic acid intake and average consumption of more than 6 grams of linoleic acid per day). Among women with a body mass index of 25 or below, the hazard ratio for breast cancer incidence was 1.27 (95% CI 0.99-1.63), comparing the highest to the lowest quintile of ascorbic acid intake. Consumption of foods high in ascorbic acid may convey protection from breast cancer among women who are overweight and/or have a high intake of linoleic acid.</p>
  • Gustafsson, Leif, et al. (författare)
  • International incidence rates of invasive cervical cancer before cytological screening
  • 1997
  • Ingår i: International Journal of Cancer. - 0020-7136 .- 1097-0215. ; 71:2, s. 159-165
  • Tidskriftsartikel (refereegranskat)abstract
    • <p>Huge differences in incidence rates of invasive cervical cancer occur among populations. These differences reflect the influences of both etiological environmental factors and removal of precursor lesions detected upon screening. The purposes of this article are (i) to describe similarities and differences in the shapes and magnitudes of age-specific incidence rates of invasive cervical cancer before screening had an effect, (ii) to provide baseline data for further global study of screening effects, and (iii) to provide baseline incidence data for the design of optimal screening programs. To eliminate the impact of screening effects, we have selected age-specific incidence rates from times when and from populations in which screening was insignificant. The selected rates were suitably scaled and compared regarding age at onset of increase in incidence, age at peak incidence, and rate of subsequent decline. Despite a 16-fold difference in incidence rates, all curves had the same basic structure, with an increase to a peak followed by a decline or a plateau. Although all populations but one had an onset around age 25, 7 European countries showed an earlier peak age (mean = 46 vs. 59) and a more rapid decline after the peak than most other populations. The common basic shape of the age-specific incidence curve, overall, suggests a relatively similar development of invasive cervical cancer in different populations. These results illustrate the underlying similarities in the markedly different age-specific incidence rates of invasive cervical cancer. They also provide a basis for studying screening effects and for optimizing screening programs in specific geographic areas.</p>
  • Adami, Hans-Olov, et al. (författare)
  • Pregnancy and risk of non-Hodgkin´s lymphoma : a prospective study
  • 1997
  • Ingår i: International Journal of Cancer. - 0020-7136 .- 1097-0215. ; 70:2, s. 155-158
  • Tidskriftsartikel (refereegranskat)abstract
    • <p>The etiology of non-Hodgkin's lymphomas (NHL), including chronic lymphocytic leukemia (CLL), is likely to be related to immune function. In the light of the established immunologic effects of a pregnancy, we decided to examine the risk of NHL and CLL in relationship to full-term pregnancies. Within a nationwide cohort we identified 1,546 women with NHL and 198 women with CLL, all 15 years or older, born 1925-1972. Five age-matched controls were selected for each case patient. Conditional logistic regression was used to estimate the odds ratios after mutual adjustment for number of births and age at first birth. We found a weak, negative association between parity and risk of NHL (p for trend 0.11) and a transient, 10-40% decrease in risk within 5-14 years after the last birth among women with various parity status. The risk of CLL decreased more markedly, and orderly with increasing parity, but the trend was not significant (p = 0.18). Small numbers of cases with CLL prevented more detailed analyses of temporal relationships. Age at first birth appeared unrelated to the risk of both NHL and CLL. We conclude that the immunologic alterations associated with a pregnancy have limited, if any, relevance to the etiology of NHL and CLL; changing reproductive pattern is an unlikely contributor to the marked increase in incidence of NHL seen in many populations.</p>
  • Akre, Olof, et al. (författare)
  • Epstein-Barr virus and cytomegalovirus in relation to testicular-cancer risk : a nested case-control study
  • 1999
  • Ingår i: International Journal of Cancer. - 0020-7136 .- 1097-0215. ; 82:1, s. 1-5
  • Tidskriftsartikel (refereegranskat)abstract
    • <p>An infectious etiology of testicular cancer has been suggested. We have evaluated seroreactivity against cytomegalovirus (CMV) and Epstein-Barr virus (EBV) in relation to testicular-cancer risk in a case-control study, nested within a cohort of prospectively collected serum specimens from 293,692 individuals. For each of 81 cases of testicular cancer identified, 3 controls were randomly selected from the cohort. Serum IgG antibody titers against CMV and EBV were determined using enzyme-linked immunosorbent assays (ELISAs) and immunofluorescence methods. Odds ratios (OR) were obtained from conditional logistic-regression models. No association was found between CMV positivity and testicular cancer overall (OR = 1.08; 95% confidence interval 0.60-1.94); risk for testicular seminoma was increased among CMV seropositive [OR = 1.70 (0.80-3.59)], whereas seropositivity was associated with decreased risk for testicular non-seminoma [OR = 0.54 (0.19-1.56)] (p for heterogeneity, 0.09). For EBV, the risk for testicular cancer was increased among individuals seropositive for viral capsid antigen (VCA) [OR = 2.74 (0.62-12.12)]. The results lend some support to the hypothesis of an infectious etiology, and we propose that future studies should take into account age at infection.</p>
  • Amini, Rose-Marie, et al. (författare)
  • Patients suffering from both Hodgkin's disease and non-Hodgkin's lymphoma: a clinico-pathological and immuno-histochemical population-based study of 32 patients
  • 1997
  • Ingår i: International Journal of Cancer. - 0020-7136 .- 1097-0215. ; 71:4, s. 510-516
  • Tidskriftsartikel (refereegranskat)abstract
    • <p>The occurrence of Hodgkin's disease (HD) and non-Hodgkin's lymphoma (NHL) appearing in the same individual indicates a closer relationship between the 2 diseases than previously believed. The purpose of our study was to analyze cases of HD and NHL in a defined population clinically, histopathologically and immunohistochemically to look for similarities indicating a common cellular origin. Between 1974 and 1994, 77 individuals were identified from the Swedish Cancer Registry and the National Health Care Programme for HD as potentially having both diagnoses. Thirty-two patients who had both HD and NHL were available for histo-pathological re-examination and immunohistochemical staining with CD30, CD15, LMP, p53, CD45 (LCA), CD3, CD45R0 (UCHL-1), L26, MB2 and CD45R (4KB5). The most common relation was HD preceding a high-grade malignant NHL (16 of 32 patients), unexpectedly often of T-cell phenotype (7 of 16 patients). The next common association was NHL of B-CLL type followed by HD (7 of 32 patients). At clinical presentation, the first lymphoma did not differ from lymphomas not associated with a second lymphoma, whereas the second one often appeared with a disseminated and aggressive clinical form. There was a significant correlation between the expression of p53 and LMP in first and second lymphomas. CD3 antibody was frequently expressed both in HD and NHL, whereas positivity for B-cell-related antibodies, CD30, CD15 and CD45R0, was less frequent and generally lower than previously described. The occurrence of HD and NHL in an individual is unusual. Tumour biological features common to both HD and NHL may indicate a similar cellular origin, regardless of the time interval between the diagnoses, and may contribute to the understanding of the pathogenesis of lymphoma.</p>
  • Bergman-Jungeström, Malin, 1967-, et al. (författare)
  • Association between <em>CYP17</em> gene polymorphism and risk of breast cancer in young women
  • 1999
  • Ingår i: International Journal of Cancer. - 0020-7136 .- 1097-0215. ; 84, s. 350-353
  • Tidskriftsartikel (refereegranskat)abstract
    • <p>Long-term exposure to oestrogens is a well-recognised risk factor for breast cancer, whereas little is known about the influence of polymorphisms of genes involved in oestrogen biosynthesis and metabolism. A candidate, containing a single bp polymorphism, T→C, (designated, A2 allele), might be the <em>CYP17</em> gene, which codes for an enzyme involved in oestrogen synthesis. This polymorphism creates an additional Sp1-type promoter site (CCACC box), which has been shown to be associated with increased serum oestrogen levels. We performed a case-control study, to evaluate association of the <em>CYP17</em> gene polymorphism with risk of breast cancer in young women (younger than 37 years). We found a statistically significant increased risk in carriers of at least 1 A2 allele [odds ratio (OR), 2.0; 95% confidence interval (CI), 1.1–3.5, <em>p</em> = 0.027], and a trend toward a gene-dose effect illustrated by a slightly higher risk for A2-homozygous subjects (OR, 2.8) than for heterozygous women (OR, 1.9). Furthermore, when we investigated the <em>CYP17</em> genotype in relation to tumour characteristics, breast cancer patients with 1 or 2 A2 alleles tended to have lower oestrogen receptor levels (risk ratio, 0.70; CI, 0.41–1.2, <em>p</em> = 0.44). Our findings suggest that <em>CYP17</em> gene polymorphism influences breast carcinogenesis in young women.</p>
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