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133 result(s) for "Shepherd, Lois"
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Simple versus Radical Hysterectomy in Women with Low-Risk Cervical Cancer
In this randomized trial in patients with low-risk cervical cancer, simple hysterectomy was not inferior to radical hysterectomy with respect to 3-year pelvic recurrence and was associated with a lower risk of urologic complications.
The lncRNA MIR2052HG regulates ERα levels and aromatase inhibitor resistance through LMTK3 by recruiting EGR1
Background Our previous genome-wide association study using the MA.27 aromatase inhibitors adjuvant trial identified SNPs in the long noncoding RNA MIR2052HG associated with breast cancer-free interval. MIR2052HG maintained ERα both by promoting AKT/FOXO3-mediated ESR1 transcription and by limiting ubiquitin-mediated ERα degradation. Our goal was to further elucidate MIR2052HG’s mechanism of action. Methods RNA-binding protein immunoprecipitation assays were performed to demonstrate that the transcription factor, early growth response protein 1 (EGR1), worked together with MIR2052HG to regulate that lemur tyrosine kinase-3 (LMTK3) transcription in MCF7/AC1 and CAMA-1 cells. The location of EGR1 on the LMTK3 gene locus was mapped using chromatin immunoprecipitation assays. The co-localization of MIR2052HG RNA and the LMTK3 gene locus was determined using RNA-DNA dual fluorescent in situ hybridization. Single-nucleotide polymorphisms (SNP) effects were evaluated using a panel of human lymphoblastoid cell lines. Results MIR2052HG depletion in breast cancer cells results in a decrease in LMTK3 expression and cell growth. Mechanistically, MIR2052HG interacts with EGR1 and facilitates its recruitment to the LMTK3 promoter. LMTK3 sustains ERα levels by reducing protein kinase C (PKC) activity, resulting in increased ESR1 transcription mediated through AKT/FOXO3 and reduced ERα degradation mediated by the PKC/MEK/ERK/RSK1 pathway. MIR2052HG regulated LMTK3 in a SNP- and aromatase inhibitor-dependent fashion: the variant SNP increased EGR1 binding to LMTK3 promoter in response to androstenedione, relative to wild-type genotype, a pattern that can be reversed by aromatase inhibitor treatment. Finally, LMTK3 overexpression abolished the effect of MIR2052HG on PKC activity and ERα levels. Conclusions Our findings support a model in which the MIR2052HG regulates LMTK3 via EGR1, and LMTK3 regulates ERα stability via the PKC/MEK/ERK/RSK1 axis. These results reveal a direct role of MIR2052HG in LMTK3 regulation and raise the possibilities of targeting MIR2052HG or LMTK3 in ERα-positive breast cancer.
If That Ever Happens to Me
Every day, thousands of people quietly face decisions as agonizing as those made famous in the Terri Schiavo case. Throughout that controversy, all kinds of people--politicians, religious leaders, legal and medical experts--made emphatic statements about the facts and offered even more certain opinions about what should be done. To many, courts were either ordering Terri's death by starvation or vindicating her constitutional rights. Both sides called for simple answers.If That Ever Happens to Medetails why these simple answers were not right for Terri Schiavo and why they are not right for end-of-life decisions today.Lois Shepherd looks behind labels like \"starvation,\" \"care,\" or \"medical treatment\" to consider what care and feeding really mean, when feeding tubes might be removed, and why disability groups, the faithful, and even the dying themselves often suggest end-of-life solutions that they might later regret. For example, Shepherd cautions against living wills as a pat answer. She provides evidence that demanding letter-perfect documents can actually weaken, rather than bolster, patient choice.The actions taken and decisions made during Terri Schiavo's final years will continue to have repercussions for thousands of others--those nearing death, their families, health-care professionals, attorneys, lawmakers, clergy, media, researchers, and ethicists.If That Ever Happens to Meis an excellent choice for anyone interested in end-of-life law, policy, and ethics--particularly readers seeking a deeper understanding of the issues raised by Terri Schiavo's case.
Contact Days Associated With Cancer Treatments in the CCTG LY.12 Trial
Background When cancer treatments have similar oncologic outcomes, the number of days with in-person healthcare contact (“”contact days’’) can help contextualize expected time use with each treatment. We assessed contact days in a completed randomized clinical trial. Patients and Methods We conducted a secondary analysis of the CCTG LY.12 RCT that evaluated 2-3 cycles of gemcitabine, dexamethasone, and cisplatin (GDP) vs. dexamethasone, cytarabine, and cisplatin (DHAP) in 619 patients with relapsed/refractory lymphoma prior to stem cell transplant. Primary analyses reported similar response rates and survival. We calculated patient-level “contact days” by analyzing trial forms. The study period was from assignment to progression or transplant. Days without healthcare contact were considered “home days’’. We compared measures of contact days across arms. Results The study period was longer in the GDP arm (median 50, vs. 47 days, P = .007). Contact days were comparable in both arms (median 18 vs 19, P = 0.79), but home days were higher in the GDP arm (median 33 vs 28, P < .001). The proportion of contact days was lower in the GDP arm (34%, vs. 38%, P = .009). The GDP arm experienced more contact days related to planned outpatient chemotherapy (median, 10 vs. 8 days), but the DHAP arm experienced many more inpatient contact days (median, 11 vs. 0 days). Conclusions Measures of time use, such as contact days, can be extracted from RCTs. In LY.12, despite comparable oncologic outcomes, GDP was associated with fewer contact days. Such information can guide decision-making for patients with hematological cancers, who already face significant healthcare contact. When cancer treatments have similar oncologic outcomes, the number of days with in-person healthcare contact (“contact days’’) can help contextualize expected time use with each treatment. This secondary analysis of the CCTG LY.12 trial analyzed trial forms to assess days with and without health care contact.
CHOP-like chemotherapy with or without rituximab in young patients with good-prognosis diffuse large-B-cell lymphoma: 6-year results of an open-label randomised study of the MabThera International Trial (MInT) Group
The MInT study was the first to show improved 3-year outcomes with the addition of rituximab to a CHOP (cyclophosphamide, doxorubicin, vincristine, and prednisone)-like regimen in young patients with good-prognosis diffuse large-B-cell lymphoma. Extended follow-up was needed to establish long-term effects. In the randomised open-label MInT study, patients from 18 countries (aged 18–60 years with none or one risk factor according to the age-adjusted International Prognostic Index [IPI], stage II–IV disease or stage I disease with bulk) were randomly assigned to receive six cycles of a CHOP-like chemotherapy with or without rituximab. Bulky and extranodal sites received additional radiotherapy. Randomisation was done centrally with a computer-based tool and was stratified by centre, bulky disease, age-adjusted IPI, and chemotherapy regimen by use of a modified minimisation algorithm that incorporated a stochastic component. Patients and investigators were not masked to treatment allocation. The primary endpoint was event-free survival. Analyses were by intention to treat. This observational study is a follow-up of the MInT trial, which was stopped in 2003, and is registered at ClinicalTrials.gov, number NCT00400907. The intention-to-treat population included 410 patients assigned to chemotherapy alone and 413 assigned to chemotherapy plus rituximab. After a median follow-up of 72 months (range 0·03–119), 6-year event-free survival was 55·8% (95% CI 50·4–60·9; 166 events) for patients assigned to chemotherapy alone and 74·3% (69·3–78·6; 98 events) for those assigned to chemotherapy plus rituximab (difference between groups 18·5%, 11·5–25·4, log-rank p<0·0001). Multivariable analyses showed that event-free survival was affected by treatment group, presence of bulky disease, and age-adjusted IPI and that overall survival was affected by treatment group and presence of bulky disease only. After chemotherapy and rituximab, a favourable subgroup (IPI=0, no bulk) could be defined from a less favourable subgroup (IPI=1 or bulk, or both; event-free survival 84·3% [95% CI 74·2–90·7] vs 71·0% [65·1–76·1], log-rank p=0·005). 18 (4·4%, 95% CI 2·6–6·9) second malignancies occurred in the chemotherapy-alone group and 16 (3·9%, 2·2–6·2) in the chemotherapy and rituximab group (Fisher's exact p=0·730). Rituximab added to six cycles of CHOP-like chemotherapy improved long-term outcomes for young patients with good-prognosis diffuse large-B-cell lymphoma. The definition of two prognostic subgroups allows a more refined therapeutic approach to these patients than does assessment by IPI alone. Hoffmann–La Roche.
ABVD Alone versus Radiation-Based Therapy in Limited-Stage Hodgkin's Lymphoma
In patients with limited-stage Hodgkin's disease, ABVD chemotherapy alone resulted in a higher rate of long-term (12-year) survival than either radiation therapy alone or radiation therapy plus ABVD chemotherapy, with significantly fewer late treatment-related deaths. Twenty years ago, the standard strategy in the case of patients with stage IA or IIA nonbulky Hodgkin's lymphoma included staging by means of laparotomy and subtotal nodal radiation therapy. 1 , 2 With this treatment, 70 to 80% of patients were cured, but they remained at risk for premature death from late radiation-induced adverse effects, including second cancers and cardiovascular disease. 3 – 6 Subsequent clinical trials showed that combining radiation with chemotherapy eliminated the need for staging laparotomy, allowed for reduced doses and target volumes of radiation, and resulted in long-term control of the disease for 90% of the patients. 7 – 11 A . . .
Evaluation of metformin in early breast cancer: a modification of the traditional paradigm for clinical testing of anti-cancer agents
Metformin, an inexpensive oral agent commonly used to treat type 2 diabetes, has been garnering increasing attention as a potential anti-cancer agent. Preclinical, epidemiologic, and clinical evidences suggest that metformin may reduce overall cancer risk and mortality, with specific effects in breast cancer. The extensive clinical experience with metformin, coupled with its known (and modest) toxicity, has allowed the traditional process of drug evaluation to be shortened. We review the rationale for a modified approach to evaluation and outline the key steps that will optimize development of this agent in breast cancer, including discussion of a Phase III adjuvant trial (NCIC MA.32) that has recently been initiated.
The association of health care contact days with economic measures in the CCTG LY.12 trial
Abstract Background Given the intensive resources required to conduct economic analyses in clinical trials, a key need is identifying scalable measures of costs. Contact days—days with health care contact outside the home—may represent such a practical measure. Methods We conducted a secondary analysis of a trial that evaluated two pre-transplant chemotherapy regimens for lymphoma. We used trial resource use and patient-reported data to calculate contact days, direct costs, and indirect costs such as lost productivity. We assessed the association between the number of contact days and cost outcomes using linear regression models and Pearson correlation coefficients. Results Contact days were moderately correlated with direct costs (r = .47, $762/ contact day, P < .0001), and strongly correlated with direct costs in the DHAP arm (r = 0.60, $727/ contact day, P < .0001). Contact days were very weakly correlated with pooled indirect costs (r 0.19, $60/ contact day, P = .0003). Among the 3 indirect cost outcomes, the relationship was strongest with paid caregiving hours (r = 0.33, 1.8 hours/ contact day, P < .0001) and weakest for unpaid hours provided by informal care partners (r = .06, .7 hours/ contact day, P = .247). Results were robust when zeroing out costs of hospitalization in the arm receiving inpatient chemotherapy and when evaluating indirect costs among patients working full-time. Conclusions Contact days have the potential as a surrogate measure of direct health system costs, which deserves further exploration. The weak correlation with indirect cost outcomes suggests that the extent of true patient and care partner burdens extends beyond just the number of contact days. Trial registration: ClinicalTrials.gov Identifier: NCT00078949
Patient-reported predictors of early treatment discontinuation: treatment-related symptoms and health-related quality of life among postmenopausal women with primary breast cancer randomized to anastrozole or exemestane on NCIC Clinical Trials Group (CCTG) MA.27 (E1Z03)
PurposeAromatase inhibitors are the most commonly prescribed adjuvant endocrine therapy for hormone-dependent early breast cancer in postmenopausal women. Among Canadian Cancer Trials Group MA.27 participants, anastrozole and exemestane had comparable 5-year event-free survival. This companion study examined differences in patient-reported treatment-related symptoms (TRS) and health-related quality of life (HRQL) among postmenopausal women randomized to anastrozole or exemestane.MethodsMA.27 participants (N = 686, of 7576) randomized to 5 years of anastrozole (1 mg/day, n = 371, Arm A) or exemestane (25 mg/day, n = 315, Arm E) completed the 56-item Functional Assessment of Cancer Therapy-Endocrine Symptoms (FACT-ES) questionnaire to assess TRS and HRQL. The FACT-ES was completed at baseline, 3, 6, 12, and 24 months.ResultsNo significant differences in FACT-ES median scores measuring TRS and HRQL were observed between treatment arms at any time point. Change in TRS from baseline was statistically significant at 3, 6, 12, and 24 months. HRQL was stable over time in both arms. Greater TRS burden was associated with poorer HRQL (coefficient = 0.57, p < 0.001). Twenty percent of patients discontinued AI therapy by month 24 and 32% discontinued AIs at 4 years. In both arms, patients reporting more side effect bother prior to initiating study treatment had a higher risk of discontinuing treatment before completing protocol therapy (hazard ratio [HR] 1.29, 95% CI 1.08–1.55, p = 0.01).ConclusionsTRS and HRQL were comparable between anastrozole and exemestane. TRS negatively affect HRQL. Women who report being bothered by treatment side effects prior to initiating an AI are at increased risk for early treatment discontinuation.
Tumor Microsatellite-Instability Status as a Predictor of Benefit from Fluorouracil-Based Adjuvant Chemotherapy for Colon Cancer
In some colorectal cancers, a loss of DNA-repair function causes a defect called microsatellite instability. This study unexpectedly found that adjuvant treatment with fluorouracil did not benefit patients whose tumors had high-frequency microsatellite instability, whereas such treatment did benefit patients with microsatellite-stable tumors. The results may affect future trials of therapy for colorectal cancer. Colorectal cancer is the fourth most common type of cancer in Western society and the second leading cause of cancer-related death in North America. 1 Although surgical resection alone is potentially curative, local or distant recurrences develop in many patients, and those with the highest risk of recurrence are advised to receive fluorouracil-based systemic adjuvant chemotherapy, which has been shown to be beneficial in a number of cooperative-group trials and analyses. 2 – 12 Traditional pathological staging systems have been useful in predicting the outcome of colorectal cancer, but it is now evident that these cancers are heterogeneous. The natural history of colorectal . . .