| 1. |
- Lundgren, Claudia, et al.
(författare)
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Cyclin E1 is a strong prognostic marker for death from lymph node negative breast cancer : A population-based case-control study
- 2015
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Ingår i: Acta Oncologica. - 0284-186X .- 1651-226X. ; 54:4, s. 538-544
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Tidskriftsartikel (refereegranskat)abstract
- Background. A large proportion of women with lymph node negative breast cancer treated with systemic adjuvant treatment do not benefit from such therapy since the patient is already cured by local treatment. Several studies have suggested that proliferation markers are strong prognostic factors in early breast cancer. Cyclins are probably the most specific markers of cell proliferation. Previously high expression of cyclin E has been associated with breast cancer recurrence.Materials and methods. In this study we investigate the prognostic value of cyclin E1 in node negative breast cancer patients. In a population-based cohort 186 women who died from breast cancer were defined as cases and 186 women alive at the corresponding time as controls. Inclusion criteria were tumour size ≤ 50 mm, no lymph node metastases and no adjuvant chemotherapy. The study was designed to detect an odds ratio of 2.5 with a power of 90% and significance level of 0.05. Cyclin E1 was determined with immunohistochemistry (IHC) on tissue microarray (TMA).Results. High expression of cyclin E1 was significantly associated with breast cancer death, in both uni- and multivariate analyses with odds ratios (OR) 2.3 [univariate, 95% confidence interval (CI) 1.5-3.6] and 2.1 (multivariate, 95% CI 1.2-3.5).Discussion. Cyclin E1 is a strong prognostic factor for breast cancer death in a population-based and node negative patient cohort and can identify high-risk patients in this group.
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| 2. |
- Hellerstedt-Börjesson, Susanne, et al.
(författare)
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Women With Breast Cancer : Experience of Chemotherapy-Induced Pain: Triangulation of Methods
- 2015
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Ingår i: Cancer Nursing. - 0162-220X .- 1538-9804. ; 38:1, s. 31-39
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUNDChemotherapy treatment for cancer diseases can cause body pain during adjuvant therapy.OBJECTIVEThe aim was to describe the perceived impact of adjuvant chemotherapy-induced pain (CHIP) on the daily lives of women with newly diagnosed breast cancer, using triangulation.METHODFifty-seven women scheduled for chemotherapy in doses of 75 mg/m2 or greater of epirubicin and/or docetaxel participated. Twenty-two of these women registered pain with values of 4 or more on the visual analog scale on day 10 following chemotherapy. Of these 22, 16 participated in an interview and colored a printed body image. A qualitative thematic stepwise analysis of the interviews was performed.RESULTSChemotherapy-induced pain had a profound impact on daily life. Ten women reported the worst possible pain, with visual analog scale scores of 8 to 10. Three different categories crystallized: perception (A) of manageable pain, which allowed the women to maintain their daily lives; perception (B) of pain beyond imagination, whereby the impact of pain had become more complex; and perception (C) of crippling pain, challenging the women's confidence in survival.CONCLUSIONSThe findings highlight the inability to capture CHIP with 1 method only; it is thus necessary to use complimentary methods to capture pain. We found that pain had a considerable impact on daily life, with surprisingly high scores of perceived pain, findings that to date have been poorly investigated qualitatively.IMPLICATIONS FOR PRACTICENurses need to (1) better identify, understand and treat CHIP, using instruments and protocols; and (2) provide improved communication about pain and pain management.
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| 3. |
- Johansson, Ida, et al.
(författare)
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Genome methylation patterns in male breast cancer - Identification of an epitype with hypermethylation of polycomb target genes
- 2015
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Ingår i: Molecular Oncology. - : Wiley. - 1574-7891 .- 1878-0261. ; 9:8, s. 1565-1579
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Tidskriftsartikel (refereegranskat)abstract
- Male breast cancer (hoc) is a rare disease that shares both similarities and differences with female breast cancer (FBC). The aim of this study was to assess genome-wide DNA methylation profiles in MBC and compare them with the previously identified transcriptional subgroups of MBC, luminal M1 and M2, as well as the intrinsic subtypes of FBC. Illumina's 450K Infinium arrays were applied to 47 MBC and 188 FBC tumors. Unsupervised clustering of the most variable CpGs among MBC tumors revealed two stable epitypes, designated ME1 and ME2. The methylation patterns differed significantly between the groups and were closely associated with the transcriptional subgroups luminal M1 and M2. Tumors in the ME1 group were more proliferative and aggressive than ME2 tumors, and showed a tendency toward inferior survival. ME1 tumors also displayed hypermethylation of PRC2 target genes and high expression of EZH2, one of the core components of PRC2. Upon combined analysis of MBC and FBC tumors, ME1 MBCs clustered among luminal B FBC tumors and ME2 MBCs clustered within the predominantly luminal A FBC cluster. The majority of the MBC tumors remained grouped together within the clusters rather than being interspersed among the FBC tumors. Differences in the genomic location of methylated CpGs, as well as in the regulation of central canonical pathways may explain the separation between MBC and FBC tumors in the respective clusters. These findings further suggest that MBC is not readily defined using conventional criteria applied to FBC.
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| 4. |
- Zduniak, K., et al.
(författare)
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Nuclear osteopontin-c is a prognostic breast cancer marker
- 2015
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Ingår i: British Journal of Cancer. - : Springer Science and Business Media LLC. - 0007-0920 .- 1532-1827. ; 112:4, s. 729-738
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Tidskriftsartikel (refereegranskat)abstract
- Background: Although Osteopontin has been known as a marker for cancer progression, the elevated production of this cytokine is not specific for cancer. We have identified the splice variant Osteopontin-c as being absent from healthy tissue but associated with about 75% of breast cancer cases. However, in previous studies of Osteopontin-c, follow-up information was not available. Methods: Here we have analysed 671 patients, comprising a cohort of 291 paraffin blocks plus a population-based case-control study of 380 arrayed breast tumor tissues. Results: We find that high staining intensity of nuclear Osteopontin-c is strongly associated with mortality in patients with early breast cancer. Cytosolic staining for exon 4, reflective of Osteopontin-a and -b also predicts poor outcome. By contrast, total Osteopontin does not correlate with prognosis. These diverse assessments of Osteopontin also do not correlate with each other, suggesting distinct expression patterns for the variant forms. Consistent with its role in tumor progression, not tumor initiation, Osteopontin-c is not correlated with proliferation markers (Ki-67, cyclin A, cyclin B, cyclin E and cyclin D), neither is it correlated with ER, PR or HER2. Conclusions: The addition of Osteopontin-c immunohistochemistry to standard pathology work-ups may have prognostic benefit in early breast cancer diagnosis.
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