| 1. |
- Kiemeney, Lambertus A, et al.
(författare)
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A sequence variant at 4p16.3 confers susceptibility to urinary bladder cancer.
- 2010
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Ingår i: Nature genetics. - : Springer Science and Business Media LLC. - 1546-1718 .- 1061-4036. ; 42:5, s. 415-9
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Tidskriftsartikel (refereegranskat)abstract
- Previously, we reported germline DNA variants associated with risk of urinary bladder cancer (UBC) in Dutch and Icelandic subjects. Here we expanded the Icelandic sample set and tested the top 20 markers from the combined analysis in several European case-control sample sets, with a total of 4,739 cases and 45,549 controls. The T allele of rs798766 on 4p16.3 was found to associate with UBC (odds ratio = 1.24, P = 9.9 x 10(-12)). rs798766 is located in an intron of TACC3, 70 kb from FGFR3, which often harbors activating somatic mutations in low-grade, noninvasive UBC. Notably, rs798766[T] shows stronger association with low-grade and low-stage UBC than with more aggressive forms of the disease and is associated with higher risk of recurrence in low-grade stage Ta tumors. The frequency of rs798766[T] is higher in Ta tumors that carry an activating mutation in FGFR3 than in Ta tumors with wild-type FGFR3. Our results show a link between germline variants, somatic mutations of FGFR3 and risk of UBC.
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| 2. |
- de Verdier, Petra J., et al.
(författare)
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Genotypes, haplotypes and diplotypes of three XPC polymorphisms in urinary-bladder cancer patients
- 2010
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Ingår i: Mutation Research - Fundamental and Molecular Mechanisms of Mutagenesis. - : Elsevier BV. - 1879-2871 .- 0027-5107. ; 694:1-2, s. 39-44
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Tidskriftsartikel (refereegranskat)abstract
- Purpose The XPC gene is involved in DNA damage recognition in the nucleotide excision repair pathway (NER) We investigated the additive effects of single nucleotide polymorphisms (SNPs) in bladder-cancer patients and population controls for three XPC polymorphisms A499V (C>T) K939Q (A>C) and poly AT (PAT -/+) Experimental Design 311 bladder-cancer patients from a population-based cohort and 337 population controls were genotyped using the PCR-restriction fragment length polymorphism (RFLP) technique Results We found complete linkage between the K939Q (A>C) and PAT (-/+) polymorphisms and therefore only the K939Q (A>C) polymorphism was included in analyses The over all estimated odds ratio was 1 7 (95% CI 1 3-2 4) for A499V (C>T) and 1 4 (95% CI 1 0-2 0) for K939Q (A>C) The associated odds ratio Increase with the variant allele homozygotes was six-fold for the A499V (C>T) and three-fold for the K939Q (A>C) polymorphism (OR=5 7 95% CI 3 4-9 5 and OR=2 6 95% CI 1 3-5 6 respectively) The variant allele haplotype of the two polymorphisms (T499C939) was associated with a nearly four fold increased odds ratio compared to the common allele haplotype (C(499)A(939)) (OR=3 6 95% Cl 1 9-6 9) Combined genotype analysis showed an Increased disease association with increasing number of variant alleles (p<0 0001) with a dominant effect of the A499V polymorphism In addition we observed association of the disease with increasing number of variant alleles for the A499V polymorphism and an early age at diagnosis (p=0 004) Conclusions Our results suggest an association between the XPC genotypes of the A499V K939Q and PAT polymorphisms and urinary-bladder cancer We propose a poly-allelic effect of these polymorphisms where the cumulative effect on disease becomes higher than the individual allelic effects (C) 2010 Elsevier B V All rights reserved
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| 3. |
- Ryk, Charlotta, et al.
(författare)
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The (CCTTT)n microsatellite polymorphism in the nitric oxide synthase 2 gene may influence bladder cancer pathogenesis.
- 2010
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Ingår i: The Journal of urology. - : Ovid Technologies (Wolters Kluwer Health). - 1527-3792 .- 0022-5347. ; 184:5, s. 2150-2157
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Tidskriftsartikel (refereegranskat)abstract
- Purpose: We analyzed whether the NOS2 promoter microsatellite (CCTTT)n polymorphism influences bladder cancer pathogenesis. Materials and Methods: We genotyped 359 patients with bladder cancer in a population based cohort and 164 population controls by DNA fragment analysis and sequencing. Genotypes were combined with information on tumor stage, grade and stage, grade progression and cancer specific death. Clinical followup was 5 years. Results: We divided (CCTTT)n alleles into short—10 or fewer, intermediate—11 or 12 and long—13 or greater repeats. Patients homozygous for 13 or longer (CCTTT)n repeats were at decreased odds ratio for bladder cancer (p = 0.010). However, after illness developed they were at 3-fold increased hazard ratio for stage progression (p = 0.062) and 4-fold increased hazard ratio for death from bladder cancer (p = 0.056). We discovered what is to our knowledge a previously undescribed polymorphism at position 23105343 (C/T). There was no difference in frequency between bladder cancer cases and population controls for this polymorphism. No associations were found between tumor stage, grade or stage and grade progression. However, patients with bladder cancer with the heterozygous CT genotype were at 3-fold increased hazard ratio of death from cancer (p = 0.011). Conclusions: Nitric oxide can induce proliferation or apoptosis depending on the cellular context. Results suggest that the (CCTTT)n NOS2 microsatellite may influence bladder cancer risk and aggressiveness. This polymorphism may have an impact on disease pathogenesis, possibly by affecting intracellular nitric oxide levels.
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| 4. |
- Thorstenson, Andreas, et al.
(författare)
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Diagnostic random bladder biopsies: reflections from a population-based cohort of 538 patients.
- 2010
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Ingår i: Scandinavian journal of urology and nephrology. - : Informa UK Limited. - 1651-2065 .- 0036-5599. ; 44:1, s. 11-19
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Tidskriftsartikel (refereegranskat)abstract
- Objective. To assess whether diagnostic random bladder biopsies and the detection of concomitant carcinoma in situ (CIS) have an impact on the frequency of intravesical bacille Calmette–Guérin (BCG) instillations or radical cystectomy; and whether this affects the cancer-specific survival in patients with pTaG3 or pT1G1–G3 transitional cell carcinoma of the urinary bladder. Material and methods. A population-based cohort of 538 patients with newly diagnosed bladder cancer was prospectively registered in the Stockholm County during 1995 and 1996 and followed for more than 5 years. Results. Random biopsies were recommended in all patients but the decision to take biopsies was made by the treating urologist and hence performed in 326 out of 538 patients (61%), which revealed concomitant CIS in 47 patients(14%). Sixty out of 103 (58%) patients with pTaG3 or pT1G1–G3 tumours, in whom random biopsies were performed, received intravesical BCG compared with five out of 22 patients (23%) where random biopsies were not taken (p = 0.004). Moreover, 23 out of 103 patients (22%) with pTaG3 or pT1G1–G3 tumours in whom random biopsies were performed underwent radical cystectomy compared with none out of 22 patients (0%) without random biopsies (p = 0.013). The Cox proportional hazard ratio for death due to bladder cancer in patients with pTaG3 or pT1G1–G3 tumours among patients not having versus having undergone random biopsies was 2.5 (95% confidence interval 1.1–5.6). Conclusion. Patients diagnosed in Stockholm in 1995 or 1996 with pTaG3 or pT1G1–G3 bladder tumours having undergone random bladder biopsies more frequently underwent BCG treatment and radical cystectomy and had higher cancer-specific survival than patients who did not undergo random biopsies.
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