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1.
Front Med (Lausanne) ; 9: 881943, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35721062

RESUMO

Objective: To analyze real-world evidence on work productivity and daily activity impairment (WPAI) and health-related quality of life (HRQoL) in rheumatoid arthritis (RA), psoriatic arthritis (PsA), and axial spondyloarthritis (axSpA) patients treated with golimumab in Austria. Methods: This was a prospective, non-interventional, multi-center study conducted in RA, PsA and axSpA patients initiating golimumab between April 2016 and May 2020 in 40 centers in Austria. WPAI, HRQoL (RAQoL, ankylosing spondylitis (AS)QoL and PsAQoL) questionnaires and disease activity (Clinical Disease Activity Index, CDAI, in RA and PsA; Bath Ankylosing Spondylitis Disease Activity Index, BASDAI, in axSpA) were assessed at baseline and months 3, 6, 12, 18, and 24. Association between WPAI and disease activity was tested using linear regression. Results: We enrolled 233 patients (RA, n = 95; axSpA, n = 69; PsA, n = 69), 110 patients were followed up to month 24. Mean age was 50.2 ± 14.2 years; 64% were female. Disease activity decreased from baseline to month 24 (RA: CDAI -24.3 ± 13.5; axSpA: BASDAI -4.4 ± 2.1, and PsA: CDAI -21.7 ± 8.5, p < 0.0001, each). Total work productivity impairment (TWPI), activity impairment and presenteeism subscores continuously decreased throughout month 24 in all indications: RA (-58.3 ± 23%, -62.6 ± 23.8% and -61.7 ± 23.3%, respectively as compared to baseline; p < 0.0001, each), axSpA (-34.4 ± 38.3%, p = 0.0117; -60.9 ± 25.9%, and -43.8 ± 26.6%, respectively, p ≤ 0.0001 both) and PsA (-35.8 ± 43.7%, p = 0.0186; -52.3 ± 25.4%, p < 0.0001; and -43.3 ± 33.5%, p = 0.0007, respectively). Absenteeism scores decreased only in RA patients (-9.2 ± 24.9%, p = 0.0234). HRQoL improved between baseline and month 24 (RAQoL: -12.6 ± 7.5; ASQoL: -8.0 ± 4.3; PsAQoL; -8.3 ± 6.4, p < 0.0001, each). TWPI, presenteeism and activity impairment strongly associated with disease activity throughout the study. Conclusions: This real-world study confirms the benefit of golimumab on work productivity/daily activity impairment in Austrian RA, PsA, and axSpA patients.

2.
Angiology ; 61(2): 211-5, 2010 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-19625260

RESUMO

Coagulation factor XII (FXII) plays a key role in both coagulation and fibrinolysis and has been associated with cardiovascular disease in some studies. Plasma FXIIa levels are strongly determined by a common functional polymorphism in the promoter of the FXII gene (F12-4C>T). To investigate the potential association of this polymorphism with peripheral arterial disease (PAD), we performed a case-control study including 668 patients with PAD and 762 controls participants without cardiovascular disease. F12 genotype frequencies were not significantly different between patients with PAD and control participants. After adjustment for classical risk factors, the odds ratio of carriers of a F12 -4T allele for PAD was 1.06 (95% confidence interval 0.86-1.32). F12 genotypes were associated with a modest increase of the mean-activated partial thromboplastin time but not with PAD stage or severity. We conclude that the functional F124C>T polymorphism is not associated with PAD.


Assuntos
Fator XII/genética , Doenças Vasculares Periféricas/genética , Polimorfismo Genético , Regiões Promotoras Genéticas/genética , Idoso , Estudos de Casos e Controles , Feminino , Genótipo , Humanos , Masculino , Pessoa de Meia-Idade , Tempo de Tromboplastina Parcial , Fatores de Risco , Fumar/epidemiologia
3.
J Cell Mol Med ; 13(9B): 3699-702, 2009 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-19298528

RESUMO

Apoptosis plays an important role in embryogenesis, autoimmunity and tumourigenesis. Cell surface death receptors such as TNFRSF6 (FAS) confer a major apoptotic effect. A single-nucleotide polymorphism in the FAS promoter gene, -670A/G, modulates apoptotic signalling and has been related to susceptibility and progression of a variety of cancers. The present study aimed to evaluate the role of this polymorphism for survival of patients with colorectal cancer. We performed a retrospective analysis including 433 patients with histologically confirmed colorectal cancer. A Cox regression model including FAS -670 genotypes, age at diagnosis, tumour grading, primary tumour size, number of lymph nodes examined, number of metastatic lymph nodes, tumour stage and application of fluorouracil-based adjuvant chemotherapy was used to estimate the effect of the FAS genotype on survival. FAS -670A/G genotype frequencies were 24.2% (AA), 46.3% (AG) and 29.5% (GG). Forty-nine patients were excluded from the Cox regression analysis because of missing values. Out of the remaining 384 patients, 69 (18%) died during a follow-up of maximum 10 years. Mean follow-up time was 58 +/- 34 months (median 55 months). Carriers of the homozygous FAS -670GG genotype had a significantly lower survival rate compared with AA/AG genotype carriers (relative risk 1.76, 95% confidence interval 1.08-2.87; P= 0.023). The FAS -670A/G polymorphism may be associated with overall survival time of patients with colorectal cancer.


Assuntos
Neoplasias Colorretais/genética , Neoplasias Colorretais/mortalidade , Regulação Neoplásica da Expressão Gênica , Polimorfismo de Nucleotídeo Único , Receptor fas/genética , Predisposição Genética para Doença , Genótipo , Heterozigoto , Homozigoto , Humanos , Polimorfismo Genético , Modelos de Riscos Proporcionais , Análise de Regressão , Estudos Retrospectivos , Risco
4.
J Cancer Res Clin Oncol ; 134(5): 591-5, 2008 May.
Artigo em Inglês | MEDLINE | ID: mdl-17938959

RESUMO

PURPOSE: Tumor growth requires the formation of new blood vessels, a phenomenon known as angiogenesis. The most important regulator of angiogenesis is vascular endothelial growth factor (VEGF). Several common polymorphisms in the VEGF-gene have been associated with different VEGF expression, production and plasma levels according to allele status, and influence the risk of developing different types of cancer. Therefore, these variants might be risk factors for colorectal cancer (CRC). METHODS: In the present case-control study, VEGF genotypes of the +936 C>T, -2578 C>A and -634 G>C polymorphisms were determined in 427 patients with histologically verified CRC and 427 age and sex-matched healthy control subjects. Genotypes were analyzed by a fluorogenic exonuclease assay (TaqMan). P-value for age at diagnosis was analyzed by student's t test, P-values for tumor characteristics were determined by Pearson's Chi-square test. Threshold for significance was P<0.05. RESULTS: At the time of diagnoses, patients were between 29 and 83 years of age, with a mean age of 61+/-10.9 years. VEGF -2578 C>A and VEGF -634 G>C genotype frequencies were similar among patients and controls. Carriers of the 936T-allele were found slightly more frequent among controls (27.2%) than among patients (22.5%), but this difference did not reach statistical significance (P=0.07). Furthermore, no correlation was found between all these variants and tumor characteristics like size, histological grading, positive regional lymph node metastases or tumor stage. CONCLUSION: We conclude that the investigated polymorphisms are not associated with individual susceptibility to colorectal cancer.


Assuntos
Biomarcadores Tumorais/genética , Neoplasias Colorretais/genética , Predisposição Genética para Doença , Polimorfismo de Nucleotídeo Único , Fator A de Crescimento do Endotélio Vascular/genética , Adulto , Idoso , Idoso de 80 Anos ou mais , Estudos de Casos e Controles , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Neovascularização Patológica/genética , Fatores de Risco
5.
Breast Cancer Res Treat ; 107(3): 459-60, 2008 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-17453338

RESUMO

Encouraged by recent studies on the MTHFR 677C>T polymorphism and breast cancer risk that suggested an association of the 677 TT genotype with increased breast cancer susceptibility in premenopausal women, we performed an analysis of the relationship between breast cancer risk and the MTHFR 677C>T polymorphism in 210 premenopausal breast cancer patients and sex- and agematched healthy control subjects. Our data show a trend for a higher MTHFR 677T allele frequency in breast cancer cases (61.9%) than in controls (51.5%, P = 0.082) supporting the results of previous studies.


Assuntos
Neoplasias da Mama/genética , Metilenotetra-Hidrofolato Redutase (NADPH2)/genética , Polimorfismo Genético , Estudos de Casos e Controles , Feminino , Humanos , Metanálise como Assunto
7.
Breast Cancer Res Treat ; 104(2): 159-64, 2007 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-17058024

RESUMO

In the biology of complex disorders, such as breast cancer, interactions among genetic factors may play an important role and theoretical considerations suggest that gene-gene interactions are quite common in such diseases. In this case-control study with 500 breast cancer patients and 500 population-based healthy sex- and age-matched control subjects, we applied a multigenic approach to examine the associations with breast cancer risk of a comprehensive panel of 16 selected polymorphisms in a variety of pathways using classification tree analysis (CART). Overall, 79.6% of all breast cancer patients and 80.6% of all control subjects were correctly classified on the basis of their individual genetic profile by the classification procedure. CART analysis of the data identified the heterozygous vascular endothelial growth factor (VEGF) and matrix metalloproteinase 3 (MMP3) genotype and homozygous cyclooxygenase-2 (PTGS2) mutant as the initial splits, indicating that these genotypes exert the greatest impact on the classification process. Breast cancer patients were primarily indicated by 30 distinct genetic profiles. The odds ratio of these genetic risk profiles for breast cancer was 16.12 (95% confidence interval 11.09-23.49). Five genetic profiles formed homogenous breast cancer subgroups and represented highest risk genetic profiles. This is the first comprehensive study to use a multigenic analysis for breast cancer and the data suggest that individuals with distinct genetic profiles are at an increased risk for breast cancer, confirming the importance of taking a multigenic approach for risk assessment.


Assuntos
Biomarcadores Tumorais/genética , Neoplasias da Mama/genética , Polimorfismo Genético , Mama/metabolismo , Estudos de Casos e Controles , Feminino , Predisposição Genética para Doença , Genótipo , Humanos , Fatores de Risco
8.
Arthritis Res Ther ; 8(4): R97, 2006.
Artigo em Inglês | MEDLINE | ID: mdl-16776848

RESUMO

An association between susceptibility to rheumatoid arthritis (RA) and a common -168A>G polymorphism in the MHC2TA gene with differential major histocompatibility complex (MHC) II molecule expression was recently reported in a Swedish population. The objective of the present study was to replicate this finding by examining the -168A>G polymorphism in an Austrian case-control study. Three hundred and sixty-two unrelated RA cases and 351 sex-matched and age-matched controls as well as 1,709 Austrian healthy individuals were genotyped. All participants were from the same ethnic background. Genotyping was performed using 5' allelic discrimination assays. The association between susceptibility to RA and the -168A>G single nucleotide polymorphism was examined by chi-square test. Comparison was made assuming a dominant effect (AG + GG genotypes versus AA genotype). In contrast to the primary report, the frequency of MHC2TA -168G allele carriers was not significantly different between patients and controls in the Austrian cohort. The homozygous MHC2TA -168 GG genotype was more frequent in matched controls than in Austrian RA patients. There was no association between the presence of RA-specific autoantibodies and the MHC2TA -168 GG genotype. In this cohort of Austrian patients, no association between the MHC2TA polymorphism and RA was found.


Assuntos
Artrite Reumatoide/genética , Predisposição Genética para Doença , Proteínas Nucleares/genética , Polimorfismo Genético , Transativadores/genética , População Branca/genética , Adenina , Idoso , Áustria , Estudos de Casos e Controles , Feminino , Frequência do Gene , Genótipo , Guanina , Humanos , Masculino , Pessoa de Meia-Idade , Suécia
10.
Wien Med Wochenschr ; 156(1-2): 61-7, 2006 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-16465615

RESUMO

Rheumatoid arthritis (RA) is a chronic inflammatory disease characterized by persistent inflammation of synovial tissue. Although the initiating event of RA is still unknown, recent research has demonstrated the importance of the increased production of tumor necrosis factor (TNF) alpha in the perpetuation of the inflammatory process of this disease. Targeting this molecule with soluble receptors, i.e., etanercept, or antibodies, like infliximab or adalimumab, a new class of highly effective anti rheumatic drugs has been developed. Unfortunately, not all patients respond sufficiently to TNF blockade and some of the patients become unresponsive to TNF-blocking agents. Targeting B-lymphocytes in these patients has opened a new therapeutic window. It has been demonstrated that B-lymphocytes have an important impact in the pathophysiology of RA. These cells produce not only a variety of autoantibodies, but directly stimulate autoaggressive T lymphocytes in the synovium. Furthermore, B-lymphocytes produce a variety of proinflammatory cytokines that also activate monocytes and synoviocytes. Several placebo-controlled clinical trials have demonstrated the efficacy of B-lymphocyte-directed therapy in patients that have responded poorly to conventional disease-modifying drugs or TNF blockade. In addition, several other B-cell specific antigens are potential targets in different autoimmune diseases.


Assuntos
Antirreumáticos/uso terapêutico , Artrite Reumatoide/tratamento farmacológico , Linfócitos B/efeitos dos fármacos , Sistemas de Liberação de Medicamentos/métodos , Anticorpos Monoclonais/uso terapêutico , Anticorpos Monoclonais Murinos , Artrite Reumatoide/imunologia , Quimioterapia Combinada , Humanos , Rituximab
11.
Clin Cancer Res ; 12(4): 1392-4, 2006 Feb 15.
Artigo em Inglês | MEDLINE | ID: mdl-16489098

RESUMO

Cyclooxygenase-2 (COX-2) is involved in carcinogenesis, immune response suppression, apoptosis inhibition, angiogenesis, and tumor cell invasion and metastasis. The gene for COX-2, designated as PTGS2, carries a common polymorphism at position 8473 in the 3'-untranslated region (PTGS2 8473T>C), which has been associated with susceptibility to malignant disease. To investigate the role of this polymorphism for breast cancer, we determined the prevalence of PTGS2 genotypes in 500 women with breast cancer and 500 sex- and age-matched healthy control subjects. Homozygous carriers of the 8473-CC genotype were more frequent among patients (12.4%) than among controls (6.6%; P = 0.002). The odds ratio for carriers of this genotype for breast cancer was 2.1 (95% confidence interval, 1.3-3.3). Among patients, estrogen receptor positivity was less frequent among carriers of a CC genotype (63.9%) than among carriers of a TT or TC genotype (76.9%; P = 0.028). Tumor size, histologic grade, presence of primary lymph node metastases, progesterone receptor positivity, or age at diagnosis were not associated with PTGS2 genotypes. We conclude that the homozygous PTGS2 8473-CC genotype may be associated with breast cancer risk.


Assuntos
Neoplasias da Mama/genética , Ciclo-Oxigenase 2/genética , Polimorfismo de Nucleotídeo Único , Adulto , Idoso , Idoso de 80 Anos ou mais , Alelos , Neoplasias da Mama/patologia , Estudos de Casos e Controles , Feminino , Frequência do Gene , Genótipo , Humanos , Pessoa de Meia-Idade , Fatores de Risco
12.
Breast Cancer Res Treat ; 97(1): 67-72, 2006 May.
Artigo em Inglês | MEDLINE | ID: mdl-16317580

RESUMO

Integrins are cell surface receptors, which mediate cell-to-cell and cell-to-extracellular matrix adhesion. Some of them, e.g. alpha(V)beta(3), alpha(IIb)beta(3) and alpha(2)beta(1), have been suggested as key players for cancer development and tumor metastasis. Two polymorphisms in the gene for the alpha(2) component, ITGA2 807C>T and 1648G>A, have been associated with the cell-surface density of integrin alpha(2)beta(1). The 176T>C polymorphism in the ITGB3 gene, encoding the beta(3) subunit of integrins alpha(IIb)beta(3) and alpha(V)beta(3), modifies a variety of traits of beta(3) expressing cells. To analyze the role of ITGA2 and ITGB3 polymorphisms for breast cancer risk and prognosis, we performed a case-control study including 500 female breast cancer patients and 500 healthy female age-matched control subjects. All study participants were of Caucasian origin (Austria, Middle-Europe). The ITGA2 1648_AA genotype was significantly associated with breast cancer (odds ratio 3.12; 95% confidence interval 1.11-8.77). Carriers of the most common ITGA2 haplotype (807C_1648G, 'wildtype') were at decreased risk for breast cancer (odds ratio 0.72; 95% confidence interval 0.53-0.98). A histological grade of 3 or 4 was found more often in ITGA2 807TT subjects (p=0.039 compared to CC+CT genotypes) and carriers of an ITGA2 1648A allele (p=0.017 compared to GG genotype). Carriers of the ITGA2 807C_1648G haplotype were less likely to have a histological grade 3 or 4 compared to non-carriers (p=0.003). The ITGB3 176T>C polymorphisms was not associated with breast cancer susceptibility. In a Cox-regression analysis, carriers of the homozygous ITGB3 176-CC genotype had a higher risk for metastasis (relative risk 2.3; 95% CI 1.3-4.2; p=0.005). We conclude that functional polymorphisms in integrin genes ITGA2 and ITGB3 influence the development and progression of breast cancer, respectively. The precise mechanism remains to be determined, but likely involves dysregulated signaling pathways.


Assuntos
Neoplasias da Mama/genética , Predisposição Genética para Doença , Integrina alfa2/genética , Integrina beta3/genética , Polimorfismo Genético/genética , Mama/metabolismo , Neoplasias da Mama/patologia , Neoplasias da Mama/secundário , Estudos de Casos e Controles , Feminino , Genótipo , Humanos , Metástase Linfática/genética , Metástase Linfática/patologia , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Reação em Cadeia da Polimerase , Fatores de Risco , Taxa de Sobrevida
13.
Breast Cancer Res Treat ; 90(2): 113-5, 2005 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-15803357

RESUMO

Interleukin-10 (IL-10) is an immunosuppressive cytokine which may facilitate development of cancer by supporting tumor escape from the immune response. A [TCATA] haplotype formed by polymorphisms at positions -3575, -2763, -1082, -819 and -592 in the promoter of the IL-10 gene is a strong determinant for IL-10 expression. The presence of this haplotype can be determined by analysis of the -592C > A polymorphism. Aim of the present study was to analyze the role of the IL-10 [TCATA] haplotype for breast cancer. We performed a case-control study including 500 female patients with histologically confirmed breast cancer and 500 female, age-matched, healthy control subjects from population-based screening studies. The -592C > A polymorphism was determined by a 5'-nuclease assay (TaqMan). Frequency of the homozygous -592 AA genotype, indicating homozygosity for the [TCATA] haplotype, was 4.2% among patients and 7.3% among controls (p=0.038; odds ratio 0.56; 95% confidence interval 0.32-0.97). IL-10 genotypes were not associated with tumor size, histological grading, estrogen or progesterone receptor status and age at diagnosis. Therefore we conclude that the IL-10 -592C > A promoter polymorphism may be associated with a reduced breast cancer risk.


Assuntos
Neoplasias da Mama/epidemiologia , Neoplasias da Mama/genética , Predisposição Genética para Doença/epidemiologia , Predisposição Genética para Doença/genética , Interleucina-10/genética , Polimorfismo Genético , Regiões Promotoras Genéticas/genética , Áustria/epidemiologia , Estudos de Casos e Controles , Feminino , Haplótipos/genética , Humanos , Análise por Pareamento , Risco
14.
Breast Cancer Res Treat ; 88(3): 205-8, 2004 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-15609122

RESUMO

BACKGROUND: Positron emission tomography (PET) is a an important technology for detection and staging of breast cancer. The method is based upon assessment of glucose metabolism using the 18F-fluorodeoxyglucose (18F-FDG) as glucose analog. A strong variability of 18F-FDG uptake by breast cancer tissue has been reported, the reason for which is not fully understood but may involve vascular density and integrity. A 936C>T polymorphism in the gene for the vascular endothelial growth factor (VEGF) has been associated with VEGF plasma levels and breast cancer risk. METHODS: To analyze the role of this polymorphism for 18F-FDG uptake in breast cancer patients, we determined the VEGF genotype in 37 patients in whom PET was performed for detection of metastases. An 18F-FDG uptake score of 1 (low uptake), 2 (medium uptake) or 3 (high uptake) was assigned to each patient. RESULTS: VEGF CC, CT and TT genotypes were found in 28, 8 and 1 patient. Uptake score of 1 was found in three patients, score 2 in 12 patients and score 3 in 22 patients. VEGF genotype was significantly associated with FDG uptake score (chi2 test, p=0.007). The number of 936-T alleles correlated with a lower 18F-FDG uptake score (Spearman correlation test, p=0.032). CONCLUSION: In the present study the common VEGF 936C>T polymorphisms had a major impact on 18F-FDG uptake in breast cancer patients. If this result can be confirmed in following studies, it might have strong relevance for the use of PET as diagnostic tool.


Assuntos
Neoplasias da Mama/genética , Carcinoma Ductal de Mama/genética , Fluordesoxiglucose F18/farmacocinética , Compostos Radiofarmacêuticos/farmacocinética , Fator A de Crescimento do Endotélio Vascular/genética , Adulto , Idoso , Idoso de 80 Anos ou mais , Mama/metabolismo , Neoplasias da Mama/diagnóstico por imagem , Neoplasias da Mama/metabolismo , Carcinoma Ductal de Mama/diagnóstico por imagem , Carcinoma Ductal de Mama/metabolismo , Feminino , Glucose/metabolismo , Humanos , Pessoa de Meia-Idade , Polimorfismo Genético , Tomografia por Emissão de Pósitrons
15.
Breast Cancer Res Treat ; 87(1): 19-22, 2004 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-15377847

RESUMO

Sulfotransferase 1A1 (SULT1A1), also designated as phenol-preferring sulfotransferase, is involved in the bioactivation and detoxification of a variety of potential carcinogens, including iodothyronines, hydroxylated aromatic amines, and phenolic xenobiotics. A common arginine (R) to histidine (H) polymorphism at amino acid position 213 influences SULT1A1 activity and has been suggested as risk factor for a different types of cancers. To investigate the role of this polymorphism for breast cancer risk, SULT1A1 genotype was determined in 500 women with clinically verified breast cancer and 500 female age-matched healthy control subjects. Frequencies of heterozygous (controls: 42.5% patients: 50.2%) or homozygous (controls: 12.6%; patients: 9.4%) carriers of the 213H variant were not significantly different between groups. The SULT1A1 genotype was furthermore not associated with tumor size, histological grading, estrogen or progesterone receptor status and age at diagnosis. The SULT1A1 213H variant was associated with the presence of lymph node metastases (p = 0.002). We conclude that the SULT1A1 R213H polymorphism is not a general risk factor for breast cancer, but may be involved in lymph node metastazing in breast cancer patients.


Assuntos
Arilsulfotransferase/genética , Neoplasias da Mama/genética , Predisposição Genética para Doença , Polimorfismo Genético , Adulto , Idoso , Idoso de 80 Anos ou mais , Neoplasias da Mama/patologia , Carcinógenos/metabolismo , Estudos de Casos e Controles , Feminino , Genótipo , Humanos , Metástase Linfática , Pessoa de Meia-Idade , Fatores de Risco
16.
Clin Cancer Res ; 10(10): 3518-20, 2004 May 15.
Artigo em Inglês | MEDLINE | ID: mdl-15161710

RESUMO

PURPOSE: The matrix metalloproteinase 3 (MMP3), also known as stromelysin-I, is a key-player for carcinogenesis and tumor growth. A 5A/6A promoter polymorphism is associated with differences in MMP3 activity and has been linked to cancer susceptibility in some studies. In the present study we evaluated the role of this polymorphism for breast cancer risk. EXPERIMENTAL DESIGN: A case-control study was performed including 500 patients with histologically confirmed breast cancer and 500 female, age-matched, healthy control subjects from population-based screening studies. The MMP3 5A/6A polymorphism was determined by a 5'-nuclease (TaqMan) assay. RESULTS: Prevalences of 5A/5A, 5A/6A, and 6A/6A genotypes were similar among patients (20.6, 51.8, and 27.6%, respectively) and controls (23.3, 47.3, and 29.4%, P = 0.34). The odds ratio of carriers of a MMP3 5A allele for breast cancer was 1.09 (95% confidence interval, 0.83-1.44). Patients with the 5A/5A genotype had a higher proportion of lymph-node metastases than those with a 5A/6A or 6A/6A genotype (P = 0.010). CONCLUSIONS: The MMP3 5A/6A promoter polymorphism does not appear to influence breast cancer susceptibility but may be linked to a higher risk for metastasizing among breast cancer patients.


Assuntos
Neoplasias da Mama/genética , Metaloproteinase 3 da Matriz/genética , Polimorfismo Genético , Regiões Promotoras Genéticas , Adulto , Idoso , Idoso de 80 Anos ou mais , Alelos , Estudos de Casos e Controles , Feminino , Predisposição Genética para Doença , Genótipo , Humanos , Metástase Linfática , Pessoa de Meia-Idade , Modelos Genéticos , Razão de Chances
17.
Cancer Lett ; 206(1): 59-62, 2004 Mar 31.
Artigo em Inglês | MEDLINE | ID: mdl-15019160

RESUMO

The 825C>T polymorphism in the gene for the G-protein beta3 subunit (GNB3) has been linked to the occurrence of a splice variant of GNB3 and distinct cellular and metabolic features and may be associated with malignant disease. 500 patients with histologically confirmed breast cancer and 500 female age-matched healthy control subjects were genotyped for the GNB3 polymorphism to analyze its role for breast cancer. Prevalences of GNB3 CC, CT and TT genotypes were similar among patients (49.7, 39.8, 10.5%) and controls (50.1, 42.4, 7.5%, P = 0.25). The GNB3 genotype was furthermore not linked to tumor size, histological grading, estrogen or progesterone receptor status and age at diagnosis. In an exploratory analysis, carriage of a 825-T allele was associated with a longer metastasis-free period in patients with primary low-grade breast cancer, but not in those with primary high-grade breast cancer (Cox regression, P = 0.025). We conclude that the GNB3 825C>T polymorphism does not appear to be associated with breast cancer risk, but may influence development of metastasis in low-grade tumors.


Assuntos
Neoplasias da Mama/genética , Proteínas Heterotriméricas de Ligação ao GTP/genética , Polimorfismo Genético , Adulto , Idoso , Idoso de 80 Anos ou mais , Neoplasias da Mama/diagnóstico , Estudos de Casos e Controles , Feminino , Frequência do Gene , Predisposição Genética para Doença , Genótipo , Humanos , Metástase Linfática/genética , Metástase Linfática/patologia , Pessoa de Meia-Idade , Receptores de Estrogênio/metabolismo , Receptores de Progesterona/metabolismo
18.
Cancer Lett ; 201(2): 181-4, 2003 Nov 25.
Artigo em Inglês | MEDLINE | ID: mdl-14607332

RESUMO

Transforming growth factor-beta 1 (TGF-beta1) is a potent inhibitor of proliferation of epithelial, endothelial and hematopoietic cells and acts as a tumor suppressor. The gene for TGF-beta1, TGFB1, carries a common T/C variation of nucleotide 29, resulting in a leucine (L) to proline (P) polymorphism at codon 10 (TGFB1 L10P). The less common 10P allele has repeatedly been linked to higher TGF-beta1 levels and in at least one study to a lower incidence of breast cancer. To further analyze the role of this polymorphism for breast cancer risk, 500 patients with histologically confirmed breast cancer and 500 sex-and age-matched healthy control subjects were genotyped for the TGFB1 L10P polymorphism by an allele-specific polymerase chain reaction assay. TGFB1 LL, LP and PP genotype frequencies were not significantly different for patients (39.6, 44.2, 16.2%) and controls (36.5, 45.9, 17.6%). We conclude that the TGFB1 L10P polymorphism is not associated with breast cancer risk.


Assuntos
Neoplasias da Mama/genética , Polimorfismo Genético/genética , Fator de Crescimento Transformador beta/genética , Adulto , Distribuição por Idade , Idoso , Idoso de 80 Anos ou mais , Estudos de Casos e Controles , DNA de Neoplasias/genética , Feminino , Genótipo , Humanos , Pessoa de Meia-Idade , Fatores de Risco , Fator de Crescimento Transformador beta1
19.
Breast Cancer Res Treat ; 81(2): 169-72, 2003 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-14572159

RESUMO

Methylenetetrahydrofolate reductase (MTHFR) is involved in folate metabolism and plays a role in DNA biosynthesis, methylation, and repair in actively dividing cells. A common 677C>T polymorphism in the gene for MTHFR, leading to a thermolabile enzyme with decreased activity, has been associated with reduced plasma folate levels and elevated homocysteine levels and could be a risk factor for breast cancer. In the present case-control study, MTHFR genotype was determined in 500 women with clinically verified breast cancer and 500 female age-matched healthy control subjects. The homozygous TT genotype was found in 13.0% patients and 13.1% controls (P = n.s.). The odds ratio of TT homozygotes for breast cancer was 0.99 (95% confidence interval 0.68-1.43). The MTHFR genotype was furthermore not associated with tumor size, histological grading, estrogen or progesterone receptor status and age at diagnosis. In a subgroup of 116 premenopausal patients, no increased frequency of the homozygous 677T genotype was found (13.8%). Therefore, we conclude that the MTHFR 677C>T polymorphism is not associated with individual susceptibility to breast cancer.


Assuntos
Neoplasias da Mama/enzimologia , Neoplasias da Mama/genética , Carcinoma Ductal de Mama/enzimologia , Carcinoma Ductal de Mama/genética , Metilenotetra-Hidrofolato Redutase (NADPH2)/genética , Polimorfismo Genético/genética , Adulto , Idoso , Idoso de 80 Anos ou mais , Estudos de Casos e Controles , Citosina/metabolismo , Feminino , Genótipo , Humanos , Pessoa de Meia-Idade , Reação em Cadeia da Polimerase , Fatores de Risco , Timina/metabolismo
20.
Int J Cancer ; 106(4): 468-471, 2003 Sep 10.
Artigo em Inglês | MEDLINE | ID: mdl-12845639

RESUMO

A common 936 C/T polymorphism in the gene for the vascular endothelial growth factor (VEGF) has been associated with VEGF plasma levels. In our case-control study, we investigated the role of this polymorphism for breast cancer risk. VEGF genotype was determined in 500 women with breast cancer and 500 sex- and age-matched healthy control subjects. Carriers of a 936T-allele were more frequent among controls (29.4%) than among patients (17.6%; p = 0.000014). The odds ratio for carriers of a 936T-allele for breast cancer was 0.51 (95% confidence interval 0.38-0.70). Additionally, VEGF plasma levels were determined in 21 nonsmoking post-menopausal controls; carriers of a 936T allele had significantly lower levels (median 23 pg/ml; range 6-50 pg/ml) than noncarriers (37; 21-387; p = 0.034). We conclude that carriers of a VEGF 936T-allele are at decreased risk for breast cancer, this, however, requiring further confirmation in a larger study.


Assuntos
Neoplasias da Mama/genética , Fatores de Crescimento Endotelial/genética , Peptídeos e Proteínas de Sinalização Intercelular/genética , Linfocinas/genética , Mutação Puntual , Polimorfismo Genético/genética , Adulto , Idoso , Idoso de 80 Anos ou mais , Neoplasias da Mama/epidemiologia , Neoplasias da Mama/etiologia , Estudos de Casos e Controles , Análise Mutacional de DNA , Primers do DNA/química , DNA de Neoplasias/genética , Fatores de Crescimento Endotelial/sangue , Feminino , Regulação Neoplásica da Expressão Gênica , Frequência do Gene , Genótipo , Humanos , Peptídeos e Proteínas de Sinalização Intercelular/sangue , Linfocinas/sangue , Pessoa de Meia-Idade , Reação em Cadeia da Polimerase , Fatores de Risco , Fator A de Crescimento do Endotélio Vascular , Fatores de Crescimento do Endotélio Vascular
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