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2.
Hematol Oncol ; 35(4): 752-759, 2017 Dec.
Article in English | MEDLINE | ID: mdl-28105753

ABSTRACT

We retrospectively studied 340 fit patients with multiple myeloma (MM) who underwent autologous stem cell transplantation (ASCT). We hypothesized that progression-free survival (PFS) of older patients was non-inferior to that of younger patients after ASCT. Our null hypothesis was that the PFS hazard ratio (HR) for a 5-year increase in age was ≥1.05; the alternative (non-inferiority) hypothesis was that the HR was ≤1. The observed HR was 0.94 (95% confidence interval [CI] 0.86-1.03); since the CI upper bound was <1.05, we reject the null hypothesis and conclude that PFS in older patients was at least as good as in younger patients. We cannot reject an analogous null hypothesis for overall survival (HR 1.06 [95% CI 0.94-1.19]), since the CI upper bound >1.05. Toxicity was similar across ages and transplant-related mortality was minimal. 28% of subjects <65 versus 45% of those ≥65 received maintenance therapy. In summary, ASCT prolongs PFS equally well in older vs. younger adults. Although we cannot exclude maintenance as a confounder, these data support ASCT for fit seniors with MM.


Subject(s)
Hematopoietic Stem Cell Transplantation/methods , Multiple Myeloma/drug therapy , Transplantation Conditioning/methods , Transplantation, Autologous/methods , Age Factors , Female , Humans , Male , Middle Aged , Multiple Myeloma/mortality , Multiple Myeloma/therapy , Retrospective Studies , Survival Rate
3.
Am J Respir Crit Care Med ; 195(8): 1050-1057, 2017 Apr 15.
Article in English | MEDLINE | ID: mdl-27898215

ABSTRACT

RATIONALE: Patients with malignant pleural effusions have significant dyspnea and shortened life expectancy. Indwelling pleural catheters allow patients to drain pleural fluid at home and can lead to autopleurodesis. The optimal drainage frequency to achieve autopleurodesis and freedom from catheter has not been determined. OBJECTIVES: To determine whether an aggressive daily drainage strategy is superior to the current standard every other day drainage of pleural fluid in achieving autopleurodesis. METHODS: Patients were randomized to either an aggressive drainage (daily drainage; n = 73) or standard drainage (every other day drainage; n = 76) of pleural fluid via a tunneled pleural catheter. MEASUREMENTS AND MAIN RESULTS: The primary outcome was the incidence of autopleurodesis following the placement of the indwelling pleural catheters. The rate of autopleurodesis, defined as complete or partial response based on symptomatic and radiographic changes, was greater in the aggressive drainage arm than the standard drainage arm (47% vs. 24%, respectively; P = 0.003). Median time to autopleurodesis was shorter in the aggressive arm (54 d; 95% confidence interval, 34-83) as compared with the standard arm (90 d; 95% confidence interval, 70 to nonestimable). Rate of adverse events, quality of life, and patient satisfaction were not significantly different between the two arms. CONCLUSIONS: Among patients with malignant pleural effusion, daily drainage of pleural fluid via an indwelling pleural catheter led to a higher rate of autopleurodesis and faster time to liberty from catheter. Clinical trial registered with www.clinicaltrials.gov (NCT 00978939).


Subject(s)
Catheters, Indwelling , Drainage/methods , Pleural Effusion, Malignant/therapy , Drainage/instrumentation , Female , Follow-Up Studies , Humans , Male , Patient Satisfaction/statistics & numerical data , Quality of Life , Recurrence , Single-Blind Method , Surveys and Questionnaires , Time Factors
4.
Oncotarget ; 7(51): 84030-84042, 2016 Dec 20.
Article in English | MEDLINE | ID: mdl-27768598

ABSTRACT

BACKGROUND: Although most triple-negative breast cancer (TNBC) patients initially respond to chemotherapy, residual tumor cells frequently persist and drive recurrent tumor growth. Previous studies from our laboratory and others' indicate that TNBC is heterogeneous, being composed of chemo-sensitive and chemo-resistant tumor cell subpopulations. In the current work, we studied the invasive behaviors of chemo-resistant TNBC, and sought to identify markers of invasion in chemo-residual TNBC. METHODS: The invasive behavior of TNBC tumor cells surviving short-term chemotherapy treatment in vitro was studied using transwell invasion assays and an experimental metastasis model. mRNA expression levels of neural cadherin (N-cadherin), an adhesion molecule that promotes invasion, was assessed by PCR. Expression of N-cadherin and its precursor form (pro-N-cadherin) was assessed by immunoblotting and flow cytometry. Pro-N-cadherin immunohistochemistry was performed on tumors obtained from patients pre- and post- neoadjuvant chemotherapy treatment. RESULTS: TNBC cells surviving short-term chemotherapy treatment exhibited increased invasive behavior and capacity to colonize metastatic sites compared to untreated tumor cells. The invasive behavior of chemo-resistant cells was associated with their increased cell surface expression of precursor N-cadherin (pro-N-cadherin). An antibody specific for the precursor domain of N-cadherin inhibited invasion of chemo-resistant TNBC cells. To begin to validate our findings in humans, we showed that the percent cell surface pro-N-cadherin (+) tumor cells increased in patients post- chemotherapy treatment. CONCLUSIONS: TNBC cells surviving short-term chemotherapy treatment are more invasive than bulk tumor cells. Cell surface pro-N-cadherin expression is associated with the invasive and chemo-resistant behaviors of this tumor cell subset. Our findings indicate the importance of future studies determining the value of cell surface pro-N-cadherin as: 1) a biomarker for TNBC recurrence and 2) a therapeutic target for eliminating chemo-residual disease.


Subject(s)
Antineoplastic Agents/pharmacology , Biomarkers, Tumor/metabolism , Cadherins/metabolism , Cell Membrane/drug effects , Cell Movement/drug effects , Protein Precursors/metabolism , Taxoids/pharmacology , Triple Negative Breast Neoplasms/drug therapy , Animals , Biomarkers, Tumor/genetics , Cadherins/genetics , Cell Death/drug effects , Cell Line, Tumor , Cell Membrane/metabolism , Cell Membrane/pathology , Chemotherapy, Adjuvant , Docetaxel , Female , Humans , Mice, Inbred NOD , Mice, SCID , Neoadjuvant Therapy , Neoplasm Invasiveness , Protein Precursors/genetics , Time Factors , Triple Negative Breast Neoplasms/genetics , Triple Negative Breast Neoplasms/metabolism , Triple Negative Breast Neoplasms/pathology , Tumor Burden/drug effects , Xenograft Model Antitumor Assays
5.
Int J Radiat Oncol Biol Phys ; 96(2): 462-469, 2016 10 01.
Article in English | MEDLINE | ID: mdl-27598811

ABSTRACT

PURPOSE: To test whether oxygenation kinetics correlate with the likelihood for local tumor control after fractionated radiation therapy. METHODS AND MATERIALS: We used diffuse reflectance spectroscopy to noninvasively measure tumor vascular oxygenation and total hemoglobin concentration associated with radiation therapy of 5 daily fractions (7.5, 9, or 13.5 Gy/d) in FaDu xenografts. Spectroscopy measurements were obtained immediately before each daily radiation fraction and during the week after radiation therapy. Oxygen saturation and total hemoglobin concentration were computed using an inverse Monte Carlo model. RESULTS: First, oxygenation kinetics during and after radiation therapy, but before tumor volumes changed, were associated with local tumor control. Locally controlled tumors exhibited significantly faster increases in oxygenation after radiation therapy (days 12-15) compared with tumors that recurred locally. Second, within the group of tumors that recurred, faster increases in oxygenation during radiation therapy (day 3-5 interval) were correlated with earlier recurrence times. An area of 0.74 under the receiver operating characteristic curve was achieved when classifying the local control tumors from all irradiated tumors using the oxygen kinetics with a logistic regression model. Third, the rate of increase in oxygenation was radiation dose dependent. Radiation doses ≤9.5 Gy/d did not initiate an increase in oxygenation, whereas 13.5 Gy/d triggered significant increases in oxygenation during and after radiation therapy. CONCLUSIONS: Additional confirmation is required in other tumor models, but these results suggest that monitoring tumor oxygenation kinetics could aid in the prediction of local tumor control after radiation therapy.


Subject(s)
Carcinoma, Squamous Cell/blood , Carcinoma, Squamous Cell/radiotherapy , Dose Fractionation, Radiation , Head and Neck Neoplasms/blood , Head and Neck Neoplasms/radiotherapy , Hemoglobins/analysis , Oxygen/blood , Tumor Hypoxia/radiation effects , Animals , Blood Flow Velocity/radiation effects , Carcinoma, Squamous Cell/pathology , Cell Line, Tumor , Dose-Response Relationship, Radiation , Female , Head and Neck Neoplasms/pathology , Humans , Kinetics , Metabolic Clearance Rate/radiation effects , Mice , Radiotherapy Dosage , Radiotherapy, Conformal/methods , Squamous Cell Carcinoma of Head and Neck , Treatment Outcome
6.
Lancet Oncol ; 17(7): 966-975, 2016 Jul.
Article in English | MEDLINE | ID: mdl-27210906

ABSTRACT

BACKGROUND: Recruitment into clinical trials for retroperitoneal sarcoma has been challenging, resulting in termination of the only randomised multicentre trial in the USA investigating perioperative radiotherapy. Nonetheless, use of radiotherapy for retroperitoneal sarcoma has increased over the past decade, substantiated primarily by its established role in extremity sarcoma. In this study, we used a nationwide clinical oncology database to separately compare overall survival for patients with retroperitoneal sarcoma who had surgery and preoperative radiotherapy or surgery and postoperative radiotherapy versus surgery alone. METHODS: We did two case-control, propensity score-matched analyses of the National Cancer Data Base, which included adult patients with retroperitoneal sarcoma who were diagnosed from 2003 to 2011. Patients were included if they had localised, primary retroperitoneal sarcoma. Patients were classified into three groups based on use of radiotherapy: preoperative radiotherapy, postoperative radiotherapy, and no radiotherapy (surgery alone). Patients were excluded if they received both preoperative radiotherapy and postoperative radiotherapy, or if they received intraoperative radiotherapy. Parallel propensity score-matched datasets were created for patients who received preoperative radiotherapy versus those who received no radiotherapy and for patients who received postoperative therapy versus those who received no radiotherapy. Propensity scores were calculated with logistic regression, with multiple imputation and backwards elimination, with a significance level to stay of 0·05. Matching was done with a nearest-neighbour algorithm and matched 1:2 for the preoperative radiotherapy dataset and 1:1 for the postoperative radiotherapy dataset. The primary objective of interest was overall survival for patients who received preoperative radiotherapy or postoperative radiotherapy compared with those who received no radiotherapy within the propensity score-matched datasets. FINDINGS: 9068 patients were included in this analysis: 563 in the preoperative radiotherapy group, 2215 in the postoperative radiotherapy group, and 6290 in the no radiotherapy group. Matching resulted in two comparison groups (preoperative radiotherapy vs no radiotherapy, and postoperative radiotherapy vs no radiotherapy) with negligible differences in all demographic, clinicopathological, and treatment-level variables. In the matched case-control analysis for preoperative radiotherapy median follow-up time was 42 months (IQR 27-70) for the preoperative radiotherapy group versus 43 months (25-64) for the no radiotherapy group; median overall survival was 110 months (95% CI 75-not estimable) versus 66 months (61-76), respectively. In the matched case-control analysis for postoperative radiotherapy median follow-up time was 54 months (IQR 32-79) for patients in the postoperative radiotherapy group and 47 months (26-72) for patients in the no radiotherapy group; median overall survival was 89 months (95% CI 79-100) versus 64 months (59-69), respectively. Both preoperative radiotherapy (HR 0·70, 95% CI 0·59-0·82; p<0·0001) and postoperative radiotherapy (HR 0·78, 0·71-0·85; p<0·0001) were significantly associated with improved overall survival compared with surgery alone. INTERPRETATION: To the best of our knowledge, this is the largest study to date of the effect of radiotherapy on overall survival in patients with retroperitoneal sarcoma. Radiotherapy was associated with improved overall survival compared with surgery alone when delivered as either preoperative radiotherapy or postoperative radiotherapy. Together with the results from the ongoing randomised EORTC trial (62092-22092; NCT01344018) investigating preoperative radiotherapy for retroperitoneal sarcoma pending, these data might provide additional support for the increasing use of radiotherapy for patients with retroperitoneal sarcoma undergoing surgical resection. FUNDING: Department of Surgery, Duke University School of Medicine.


Subject(s)
Neoplasm Recurrence, Local/diagnosis , Postoperative Complications/radiotherapy , Propensity Score , Retroperitoneal Neoplasms/radiotherapy , Retroperitoneal Neoplasms/surgery , Sarcoma/radiotherapy , Sarcoma/surgery , Case-Control Studies , Databases, Factual , Female , Follow-Up Studies , Humans , Male , Medical Oncology , Middle Aged , Neoplasm Grading , Neoplasm Staging , Preoperative Care , Prognosis , Radiotherapy, Adjuvant , Retroperitoneal Neoplasms/pathology , Sarcoma/pathology , Survival Rate
7.
Nicotine Tob Res ; 18(10): 1960-6, 2016 10.
Article in English | MEDLINE | ID: mdl-27091830

ABSTRACT

INTRODUCTION: Most pregnant women who quit smoking return to smoking postpartum. Trials to prevent this return have been unsuccessful. We tested the efficacy of a nurse-delivered intervention in maintaining smoking abstinence after delivery among pregnant women who quit smoking that was tailored on their high risk of relapse (eg, had strong intentions to return). METHODS: We recruited 382 English-speaking spontaneous pregnant quitters from 14 prenatal clinics and randomized them to receive either a smoking abstinence booklet plus newsletters about parenting and stress (control) or a nurse-delivered smoking abstinence intervention that differed in intensity for the high and low risk groups. Our primary outcome was smoking abstinence at 12 months postpartum. RESULTS: Using intent-to-treat analyses, there was a high rate of biochemically validated smoking abstinence at 12 months postpartum but no arm differences ( CONTROL: 36% [95% confidence interval [CI]: 29-43] vs. INTERVENTION: 35% [95% CI: 28-43], P = .81). Among women at low risk of returning to smoking, the crude abstinence rate was significantly higher in the control arm (46%) than in the intervention arm (33%); among women at high risk of returning to smoking, the crude abstinence rate was slightly lower but not different in the control arm (31%) than in the intervention arm (37%). CONCLUSIONS: Low-risk women fared better with a minimal intervention that focused on parenting skills and stress than when they received an intensive smoking abstinence intervention. The opposite was true for women who were at high risk of returning to smoking. Clinicians might need to tailor their approach based on whether women are at high or low risk of returning to smoking. IMPLICATIONS: Results suggest that high-risk and low-risk women might benefit from different types of smoking relapse interventions. Those who are lower risk of returning to smoking might benefit from stress reduction that is devoid of smoking content, whereas those who are higher risk might benefit from smoking relapse prevention.


Subject(s)
Pamphlets , Practice Patterns, Nurses' , Secondary Prevention , Smoking Cessation/methods , Smoking Prevention , Adult , Female , Humans , Obstetric Nursing , Postpartum Period , Pregnancy , Treatment Outcome
8.
J Urol ; 194(5): 1241-6, 2015 Nov.
Article in English | MEDLINE | ID: mdl-26165588

ABSTRACT

PURPOSE: We evaluated whether the presence and severity of baseline prostate atrophy in men with initial biopsy negative for prostate cancer was associated the risk of subsequent prostate cancer detection in a clinical trial with scheduled study mandated biopsies. MATERIALS AND METHODS: We retrospectively analyzed the records of 3,084 men 50 to 75 years old with prostate specific antigen between 2.5 and 10 ng/ml, and a prior negative biopsy in the placebo arm of the REDUCE (Reduction by Dutasteride of Prostate Cancer Events) study who completed at least 1 per-protocol biopsy. Prostate cancer (defined as present or absent) and prostate atrophy (graded as absent, mild or moderate/marked) was assessed by central pathology review. The association of baseline atrophy with positive 2 and 4-year repeat biopsies was evaluated with logistic regression, controlling for baseline covariates. RESULTS: Baseline prostate atrophy was detected in 2,143 men (70%) and graded as mild and moderate/marked in 1,843 (60%) and 300 (10%) baseline biopsies, respectively. Patients with atrophy were older and had a larger prostate, and more acute and chronic prostate inflammation. At 2-year biopsy the prostate cancer incidence was 17% (508 cases). Baseline atrophy was significantly associated with lower prostate cancer risk (univariable and multivariable OR 0.60, 95% CI 0.50-0.74 and OR 0.67, 95% CI 0.54-0.83, p <0.001, respectively) at the 2-year biopsy. These results were similar at the 4-year biopsy (univariable and multivariable OR 0.70, 95% CI 0.53-0.93 and OR 0.72, 95% CI 0.53-0.97, p = 0.03, respectively). Relative to no atrophy the prostate cancer risk at the 2-year repeat biopsy was lower for mild atrophy (OR 0.69, 95% CI 0.55-0.86) and moderate/marked atrophy (OR 0.51, 95% CI 0.34-0.76, each p <0.001). CONCLUSIONS: Baseline prostate atrophy in men with a prostate biopsy negative for prostate cancer was independently associated with subsequent lower prostate cancer detection.


Subject(s)
Biopsy/methods , Dutasteride/administration & dosage , Endosonography/methods , Image-Guided Biopsy/methods , Neoplasm Staging/methods , Prostate/pathology , Prostatic Neoplasms/pathology , 5-alpha Reductase Inhibitors/administration & dosage , Aged , Atrophy , Disease Progression , Dose-Response Relationship, Drug , Double-Blind Method , Humans , Male , Middle Aged , Prostatic Neoplasms/drug therapy , Rectum , Retrospective Studies
9.
J Occup Environ Med ; 57(2): 188-95, 2015 Feb.
Article in English | MEDLINE | ID: mdl-25654520

ABSTRACT

OBJECTIVE: To present the short-term follow-up findings of the Steps to Health study, a randomized trial to evaluate the effectiveness of two employee weight management programs offered within Duke University and the Health System. METHODS: A total of 550 obese (body mass index, ≥30 kg/m2) employees were randomized 1:1 between January 2011 and June 2012 to the education-based Weight Management (WM) or the WM+ arm, which focused on behavior modification. Employees were contacted to complete a follow-up visit approximately 14 months after baseline. RESULTS: There were no clinically, or statistically, meaningful differences between arms, but there were modest reductions in body mass index, and positive, meaningful changes in diet and physical activity for both arms. CONCLUSIONS: The modest positive effects observed in this study may suggest that to achieve weight loss through the workplace more intensive interventions may be required.


Subject(s)
Behavior Therapy , Health Education , Hospitals, University , Obesity/prevention & control , Universities , Weight Reduction Programs/methods , Adult , Body Mass Index , Diet , Female , Follow-Up Studies , Health Behavior , Humans , Male , Middle Aged , Motor Activity , Occupational Health , Workplace
10.
Ann Surg Oncol ; 22(1): 287-94, 2015 Jan.
Article in English | MEDLINE | ID: mdl-25145500

ABSTRACT

BACKGROUND: L-phenylalanine mustard (LPAM) has been the standard for use in regional chemotherapy (RC) for unresectable in-transit melanoma. Preclinical data demonstrated that regional temozolomide (TMZ) may be more effective. METHODS: Patients with AJCC Stage IIIB or IIIC extremity melanoma who failed previous LPAM-based RC were treated with TMZ via isolated limb infusion (ILI) according to a modified accelerated titration design. Drug pharmacokinetic (PK) analysis, tumor gene expression, methylation status of the O6-methylguanine methyltransferase (MGMT) promoter, and MGMT expression were evaluated. Primary objectives were to (1) determine dose-limiting toxicities (DLTs) and maximum tolerated dose (MTD) of TMZ via ILI and (2) explore biomarker correlates of response. RESULTS: 28 patients completed treatment over 2.5 years at 3 institutions. 19 patients were treated at the MTD defined as 3,200 mg/m(2) [multiplied by 0.09 (arm), 0.18 (leg)]. Two of five patients had DLTs at the 3,600 mg/m(2) level while only grade 1 (n = 15) and grade 2 (n = 4) clinical toxicities occurred at the MTD. At 3-month post-ILI, 10.5 % (2/19) had CR, 5.3 % (1/19) had PR, 15.8 % (3/19) had SD, and 68.4 % (13/19) had PD. Neither PK parameters of TMZ nor MGMT levels were associated with response or toxicity. CONCLUSION: In this first ever use of intra-arterial TMZ in ILI for melanoma, the MTD was determined. While we could not define a marker for TMZ response, the minimal toxicity of TMZ ILI may allow for repeated treatments to increase the response rate as well as clarify the role of MGMT expression.


Subject(s)
Antineoplastic Agents, Alkylating/administration & dosage , DNA Methylation , DNA Modification Methylases/genetics , DNA Repair Enzymes/genetics , Dacarbazine/analogs & derivatives , Extremities , Melanoma/drug therapy , Skin Neoplasms/drug therapy , Tumor Suppressor Proteins/genetics , Aged , Aged, 80 and over , Antineoplastic Agents, Alkylating/pharmacokinetics , Cohort Studies , Dacarbazine/administration & dosage , Dacarbazine/pharmacokinetics , Female , Follow-Up Studies , Humans , Infusions, Intra-Arterial , Male , Maximum Tolerated Dose , Melanoma/genetics , Melanoma/pathology , Middle Aged , Neoplasm Staging , Prognosis , Promoter Regions, Genetic , RNA, Messenger/genetics , Real-Time Polymerase Chain Reaction , Reverse Transcriptase Polymerase Chain Reaction , Skin Neoplasms/genetics , Skin Neoplasms/pathology , Temozolomide , Tissue Distribution
11.
Cancer Epidemiol Biomarkers Prev ; 24(2): 379-85, 2015 Feb.
Article in English | MEDLINE | ID: mdl-25406226

ABSTRACT

BACKGROUND: Although many Latinos in the United States smoke, they receive assistance to quit less often than non-Latinos. To address this disparity, we recruited Latino couples into a randomized controlled trial and provided a smoking cessation program during a teachable moment, when men's partners were pregnant. METHODS: We compared two interventions: (i) written materials plus nicotine replacement therapy (NRT) to (ii) materials, NRT, and couple-based counseling that addressed smoking cessation and couples communication. We recruited 348 expectant fathers who smoked via their pregnant partners from county health departments. Our primary outcome was 7-day point prevalence smoking abstinence and was collected from November 2010 through April 2013 and analyzed in February 2014. RESULTS: We found high rates of cessation but no arm differences in smoking rates at the end of pregnancy (0.31 vs. 0.30, materials only vs. counseling, respectively) and 12 months after randomization (postpartum: 0.39 vs. 0.38). We found high quit rates among nondaily smokers but no arm differences (0.43 vs. 0.46 in pregnancy and 0.52 vs. 0.48 postpartum). Among daily smokers, we found lower quit rates with no arm differences but effects favoring the intervention arm (0.13 vs. 0.16 in pregnancy and 0.17 vs. 0.24 postpartum). CONCLUSIONS: A less intensive intervention promoted cessation equal to more intensive counseling. Postpartum might be a more powerful time to promote cessation among Latino men. IMPACT: Less intensive interventions when delivered during teachable moments for Latino men could result in a high smoking cessation rate and could reduce disparities.


Subject(s)
Fathers/education , Hispanic or Latino/education , Postpartum Period , Pregnancy Complications/prevention & control , Smoking Cessation/methods , Tobacco Use Cessation Devices , Adult , Female , Humans , Male , Pamphlets , Pregnancy , Tobacco Smoke Pollution/prevention & control , Transdermal Patch , Young Adult
12.
Nicotine Tob Res ; 17(6): 742-5, 2015 Jun.
Article in English | MEDLINE | ID: mdl-25542912

ABSTRACT

INTRODUCTION: Although many pregnant women quit smoking, most return to smoking postpartum. Returning to smoking is strongly related to women's stated intention about smoking during pregnancy. We examined factors related to women's intention to return to smoking to improve intervention trials. METHODS: We report cross-sectional baseline data from a randomized controlled trial to prevent postpartum return to smoking. Women (n = 382; 98% consent rate) were English-speaking women who smoked at least 100 cigarettes in their lifetimes and at least 5 cigarettes a day prior to becoming pregnant. We fit logistic regression models to test whether women's intention to return to smoking was associated with demographic and smoking factors such as race, parity, and smoker self-identity. RESULTS: Forty-three percent of women had a strong intention of returning to smoking. Factors independently associated with intending to return to smoking were: stating they did not want to be currently pregnant (OR = 2.1, CI = 1.1-3.9), reporting being abstinent for fewer days (OR = 0.8, CI = 0.7-0.9), being less concerned about the harmful effects of smoking to themselves (OR = 1.6, CI = 0.9-2.8), viewing quit as temporary (OR = 2.1, CI = 1.2-3.6), and self-identifying selves as smokers (OR = 8.7, CI = 5.0-15.2). CONCLUSIONS: Although some factors related to intention to return to smoking were unchangeable, it might be possible to attempt to change women's attribution of why they quit to be more permanent and to have them change their self-identity to be a "nonsmoker" from a "smoker who is not currently smoking." Helping women have stronger intentions to stay quit could promote less return to smoking postpartum.


Subject(s)
Intention , Postpartum Period/psychology , Self Concept , Smoking Cessation/psychology , Smoking/psychology , Adult , Cross-Sectional Studies , Ethnicity , Female , Humans , Logistic Models , Parity , Pregnancy , Pregnancy, Unwanted/psychology , Recurrence , Smoking Prevention , Tobacco Use Disorder , Young Adult
13.
Obesity (Silver Spring) ; 22(4): 1179-86, 2014 Apr.
Article in English | MEDLINE | ID: mdl-24796000

ABSTRACT

OBJECTIVES: Evaluate the relationship between body mass index (BMI) and health claims costs over the last decade, assess the strength and nature of the relationship between BMI and costs, and identify comorbidities that may drive any increased costs. METHODS: Using 2001-2011 claims data for employees participating in annual health appraisals, annual paid claims costs were calculated. One-part negative binomial models were fit to evaluate the relationship between BMI and costs, controlling for age, gender, race/ethnicity, and calendar year period. RESULTS: The relationship between increasing BMI and increasing health claims costs is gradual and starts already at a BMI of 19. The nature of the relationship did not change notably over time. The most important obesity-related comorbidities, expressed as percent increase in cost per BMI unit, was cardiovascular disease (males 10.53, 95% CI [6.46, 14.77], females 4.27, 95% CI [1.25, 7.38), while cardiovascular agents (7.23, 95% CI [6.08, 8.39]) were the most important driver of pharmacy costs. CONCLUSION: In contrast to recent evidence relating to effects on mortality, we observed a gradual increase in health claims costs starting at the low end of the recommended BMI range.


Subject(s)
Insurance, Health, Reimbursement/economics , Insurance, Health, Reimbursement/trends , Obesity/classification , Obesity/complications , Overweight/complications , Adult , Body Mass Index , Cardiovascular Diseases/epidemiology , Comorbidity , Diabetes Mellitus, Type 2/epidemiology , Female , Follow-Up Studies , Humans , Hypertension/epidemiology , Male , Multivariate Analysis , Obesity/economics , Overweight/economics , Risk Factors
14.
J Thorac Cardiovasc Surg ; 146(4): 768-773.e1, 2013 Oct.
Article in English | MEDLINE | ID: mdl-23856204

ABSTRACT

OBJECTIVE: To define subgroups at high risk of local recurrence (LR) after surgery for non-small cell lung cancer using a recursive partitioning analysis (RPA). METHODS: This Institutional Review Board-approved study included patients who underwent upfront surgery for I-IIIA non-small cell lung cancer at Duke Cancer Institute (primary set) or at other participating institutions (validation set). The 2 data sets were analyzed separately and identically. Disease recurrence at the surgical margin, ipsilateral hilum, and/or mediastinum was considered an LR. Recursive partitioning was used to build regression trees for the prediction of local recurrence-free survival (LRFS) from standard clinical and pathological factors. LRFS distributions were estimated with the Kaplan-Meier method. RESULTS: The 1411 patients in the primary set had a 5-year LRFS rate of 77% (95% confidence interval [CI], 0.74-0.81), and the 889 patients in the validation set had a 5-year LRFS rate of 76% (95% CI, 0.72-0.80). The RPA of the primary data set identified 3 terminal nodes based on stage and histology. These nodes and their 5-year LRFS rates were as follows: (1) stage I/adenocarcinoma, 87% (95% CI, 0.83-0.90); (2) stage I/squamous or large cell, 72% (95% CI, 0.65-0.79); and (3) stage II-IIIA, 62% (95% CI, 0.55-0.69). The validation RPA identified 3 terminal nodes based on lymphovascular invasion (LVI) and stage: (1) no LVI/stage IA, 82% (95% CI, 0.76-0.88); (2) no LVI/stage IB-IIIA, 73% (95% CI, 0.69-0.80); and (3) LVI, 58% (95% CI, 0.47-0.69). CONCLUSIONS: The risk of LR was similar in the primary and validation patient data sets. There was discordance between the 2 data sets regarding the clinical factors that best segregate patients into risk groups.


Subject(s)
Carcinoma, Non-Small-Cell Lung/surgery , Lung Neoplasms/surgery , Neoplasm Recurrence, Local , Pneumonectomy , Carcinoma, Non-Small-Cell Lung/mortality , Carcinoma, Non-Small-Cell Lung/pathology , Disease-Free Survival , Female , Humans , Kaplan-Meier Estimate , Lung Neoplasms/mortality , Lung Neoplasms/pathology , Lymphatic Metastasis , Male , Neoplasm Staging , Neoplasm, Residual , Pneumonectomy/adverse effects , Pneumonectomy/mortality , Regression Analysis , Reproducibility of Results , Retrospective Studies , Risk Assessment , Risk Factors , Time Factors , Treatment Outcome , United States
15.
Contemp Clin Trials ; 35(2): 68-76, 2013 Jul.
Article in English | MEDLINE | ID: mdl-23648394

ABSTRACT

BACKGROUND: The workplace can be an important setting for addressing obesity. An increasing number of employers offer weight management programs. PURPOSE: Present the design, rationale and baseline characteristics of the Steps to Health study (STH), a randomized trial to evaluate the effectiveness of two preexisting employee weight management programs offered at Duke University and Medical Center. METHODS: 550 obese (BMI ≥30) employee volunteers were randomized 1:1 to two programs. Baseline data, collected between January 2011 and July 2012, included height/weight, accelerometry, workplace injuries, health care utilization, and questionnaires querying socio-cognitive factors, perceptions of health climate, physical activity, and dietary intake. In secondary analyses participants in the two programs will also be compared to a non-randomized observational control group of obese employees. RESULTS: At baseline, the mean age was 45 years, 83% were female, 41% white, and 53% black. Mean BMI was 37.2. Participants consumed a mean of 2.37 servings of fruits and vegetables per day (in the past week), participated in 11.5 min of moderate-to-vigorous physical activity, and spent 620 min being sedentary. CONCLUSION: STH addresses the need for evaluation of worksite interventions to promote healthy weight. In addition to having direct positive effects on workers' health, worksite programs have the potential to increase productivity and reduce health care costs.


Subject(s)
Health Services/statistics & numerical data , Obesity/therapy , Occupational Health Services/methods , Occupational Health , Academic Medical Centers , Accelerometry , Adult , Diet Therapy , Diet, Reducing , Exercise Therapy , Female , Health Promotion , Humans , Male , Middle Aged , Treatment Outcome , Workforce , Workplace
16.
Int J Gynecol Cancer ; 23(5): 846-52, 2013 Jun.
Article in English | MEDLINE | ID: mdl-23666017

ABSTRACT

OBJECTIVES: (1) To determine whether use of a PARP inhibitor or (2) BRCA1/2 mutation testing followed by a PARP inhibitor for test positives is potentially cost-effective for maintenance treatment of platinum-sensitive recurrent high-grade serous ovarian cancer. METHODS: A modified Markov decision analysis compared 3 strategies: (1) observe; (2) olaparib to progression; (3) BRCA1/2 mutation testing; treat mutation carriers with olaparib to progression. Progression-free survival and rates of adverse events were derived from a phase 2 randomized trial. Key assumptions are as follows: (1) 14% of patients harbor a BRCA1/2 mutation; (2) progression-free survival of individuals treated with olaparib is improved for BCRA1/2 carriers compared with noncarriers (estimated hazard ratio, approximately 0.4). Costs derived from national data were assigned to treatments, adverse events, and BRCA1/2 test. Monte Carlo probabilistic sensitivity analysis was performed. RESULTS: Global olaparib was the most effective strategy, followed by BRCA1/2 testing and no olaparib. BRCA1/2 testing had an incremental cost-effectiveness ratio (ICER) of $193,442 per progression-free year of life saved (PF-YLS) compared to no olaparib, whereas global olaparib had an ICER of $234,128 per PF-YLS compared to BRCA1/2 testing. At a 52% lower-than-baseline olaparib cost estimate of $3000 per month, BRCA1/2 testing became potentially cost-effective compared with observation, with an ICER of $100,000 per PF-YLS. When strategy (1) was removed from the analysis, BRCA1/2 testing was the preferred strategy. CONCLUSIONS: The use of maintenance olaparib in women with high-grade serous ovarian cancer is not cost-effective regardless of whether BRCA1/2 testing is used to direct treatment. However, BRCA1/2 testing is a preferred strategy compared to global maintenance olaparib alone.


Subject(s)
BRCA1 Protein/genetics , BRCA2 Protein/genetics , Drug Resistance, Neoplasm/genetics , Mutation/genetics , Neoplasm Recurrence, Local/economics , Ovarian Neoplasms/economics , Phthalazines/therapeutic use , Piperazines/therapeutic use , Platinum/pharmacology , Poly(ADP-ribose) Polymerase Inhibitors , Antineoplastic Agents/economics , Antineoplastic Agents/therapeutic use , Cystadenocarcinoma, Serous/drug therapy , Cystadenocarcinoma, Serous/economics , Cystadenocarcinoma, Serous/genetics , Cystadenocarcinoma, Serous/mortality , Female , Follow-Up Studies , Humans , Neoplasm Grading , Neoplasm Recurrence, Local/drug therapy , Neoplasm Recurrence, Local/genetics , Neoplasm Recurrence, Local/mortality , Neoplasm Staging , Ovarian Neoplasms/drug therapy , Ovarian Neoplasms/genetics , Ovarian Neoplasms/mortality , Poly (ADP-Ribose) Polymerase-1 , Prognosis , Survival Rate
17.
Leuk Lymphoma ; 54(12): 2654-9, 2013 Dec.
Article in English | MEDLINE | ID: mdl-23547837

ABSTRACT

Alemtuzumab consolidation has been investigated to improve remission duration after fludarabine-based induction for chronic lymphocytic leukemia (CLL). The impact on genomic high-risk disease remains unknown. Cancer and Leukemia Group B (CALGB) 19901 and 10101 enrolled previously untreated patients to receive alemtuzumab consolidation after fludarabine-based induction. Immunoglobulin heavy chain gene (IGVH) mutation status and interphase cytogenetics were assessed retrospectively. Treatment response with these alemtuzumab-containing regimens was similar, regardless of genomic risk, except for patients harboring del(17p), where few complete remissions were observed. Progression-free survival (PFS) was similar between IGVH groups, but overall survival (OS) was inferior in IGVH unmutated patients (p = 0.03). Cytogenetic risk group was associated with PFS and OS (p = 0.01 for both), with similarly short PFS in patients with del(17p) and del(11q) and particularly short OS in patients with del(17p). Cytogenetic risk group remained significantly associated with PFS and OS when controlling for other prognostic factors (PFS: p = 0.009; OS: p = 0.02), as did the negative association of IGVH unmutated disease with OS (p = 0.004). Results were similar when restricting to patients who received at least one dose of alemtuzumab consolidation, demonstrating limited ability to overcome the poor outcome associated with high-risk genetic features.


Subject(s)
Antibodies, Monoclonal, Humanized/therapeutic use , Antineoplastic Agents/therapeutic use , Leukemia, Lymphocytic, Chronic, B-Cell/drug therapy , Leukemia, Lymphocytic, Chronic, B-Cell/genetics , Adult , Aged , Aged, 80 and over , Alemtuzumab , Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Consolidation Chemotherapy , Female , Humans , Immunoglobulin Heavy Chains/genetics , Leukemia, Lymphocytic, Chronic, B-Cell/mortality , Leukemia, Lymphocytic, Chronic, B-Cell/pathology , Male , Middle Aged , Mutation , Neoplasm Staging , Remission Induction
18.
Acad Pediatr ; 13(3): 243-50, 2013.
Article in English | MEDLINE | ID: mdl-23491583

ABSTRACT

BACKGROUND: The American Academy of Pediatrics (AAP) has issued specific behavioral recommendations to prevent obesity. It is unclear how often high-risk preschoolers and overweight mothers meet recommended behavior goals and whether meeting these goals is negatively associated with overweight/obesity. OBJECTIVE: To describe the proportion of preschoolers and mothers that meet AAP-recommended behavior goals and examine the associations of meeting goals with weight-status, and mothers meeting goals and children meeting corresponding goals. METHODS: Secondary analysis of baseline data (before an intervention) from mother-preschooler dyads in a weight-control study. Mothers were overweight or obese. Preschoolers were 2-5 years old. Dietary and feeding practices were assessed by the use of questionnaires. Activity was measured directly using accelerometry. Outcomes included preschooler overweight and maternal obesity. RESULTS: The respective proportions of children and mothers that met behavior goals were: 17% and 13% for ≥5 fruits/vegetables/day, 46% and 33% for zero sugar-sweetened beverages/day, 41% and 13% for fast-food <1×/week, and 46% and 13% for screentime ≤2 hours/day. Moderate-to-vigorous physical activity did not exceed 60 minutes/day in any participant. A total of 49% ate family meals together 7×/week. For each additional goal met, the adjusted odds for preschooler overweight was 0.9 (95% confidence interval 0.8-1.1) and for maternal obesity, 0.8 (95% confidence interval 0.6-0.9). Preschoolers had significantly greater odds of meeting each goal when mothers met the corresponding goal. CONCLUSIONS: Few high-risk preschoolers or overweight mothers meet AAP-recommended behavior goals. Meeting a greater number of behavior goals may be particularly important for maternal weight. Preschoolers have greater odds of meeting behavior goals when mothers meet behavior goals.


Subject(s)
Feeding Behavior , Health Behavior , Mothers , Motor Activity , Overweight/prevention & control , Accelerometry , Adult , Behavior Therapy , Child, Preschool , Female , Humans , Male , Obesity/prevention & control , Obesity/therapy , Overweight/therapy , Pediatric Obesity/prevention & control
19.
Am J Health Promot ; 27(3): 181-90, 2013.
Article in English | MEDLINE | ID: mdl-23286595

ABSTRACT

PURPOSE: When a patient is diagnosed with lung cancer, members of his/her social network may be more likely to engage in smoking cessation efforts. Proactive telephone counseling combined with a tailored self-directed intervention may be more effective at promoting smoking cessation than a tailored self-directed intervention alone. DESIGN: Randomized controlled trial. SETTING: Four clinical sites. SUBJECTS: Current smokers who are family members and close friends of patients with lung cancer. INTERVENTION: Six counselor-initiated counseling calls using motivational interviewing techniques and focusing on teaching adaptive coping skills based on the transactional model of stress and coping along with tailored self-directed materials (including nicotine patches, if not contraindicated) (n  =  245) vs. tailored self-directed materials (including nicotine patches, if not contraindicated) (n  =  251). MEASURES: Participants were surveyed at baseline and at 2 weeks, 6 months, and 12 months postintervention. The outcome was 7-day point prevalent abstinence. ANALYSIS: The objective of this study was to test for arm differences in smoking cessation rates at 2 weeks and 6 months postintervention (primary) and at 12 months postintervention (secondary). RESULTS: We found no overall effect of the proactive intervention on cessation rates. Among younger participants (age <50), the cessation rate in the intervention group was higher than in the control group at 2 weeks postintervention (16% vs. 4%, p  =  .046). For older participants (age >50), there were no group differences. CONCLUSION: Proactive telephone counseling focusing on adaptive coping skills was difficult to implement among smokers in lung cancer patients' social network. Although this study did not demonstrate any added benefit to cessation rates, this null finding may be a result of an intervention that was weaker than intended, owing to difficulties in completing the counseling phone calls. We discuss lessons learned and areas for future research in this special population.


Subject(s)
Counseling/methods , Lung Neoplasms/prevention & control , Smoking Cessation/methods , Social Support , Age Factors , Female , Humans , Lung Neoplasms/psychology , Male , Middle Aged , Motivation , Patient Selection , Program Evaluation , Telephone
20.
Leuk Lymphoma ; 54(2): 252-4, 2013 Feb.
Article in English | MEDLINE | ID: mdl-22897733

ABSTRACT

The impact of initial fludarabine therapy on transformation to Richter syndrome (RS) or prolymphocytic leukemia (PLL) in patients with chronic lymphocytic leukemia (CLL) is uncertain. We studied the outcomes of 521 patients with CLL who were randomized to initial fludarabine (F), chlorambucil (C) or F + C therapy on an intergroup trial (CALGB 9011). RS developed in 34 (7%) patients and PLL in 10 (2%). RS and PLL occurred in 14 (7%) and three (2%) of 188 patients randomized to F; nine (5%) and four (2%) of 191 patients treated with C; and 11 (8%) and three (2%) of 142 receiving F + C, respectively. Four percent of the 206 patients with Rai stage III/IV developed PLL, compared to only 1% of the 315 patients with Rai stage I/II (p = 0.02). Initial fludarabine therapy in patients with CLL did not impact transformation to RS or PLL, nor were any other baseline characteristics predictive for such transformation in this series.


Subject(s)
Antineoplastic Agents/pharmacology , Antineoplastic Agents/therapeutic use , Cell Transformation, Neoplastic/drug effects , Leukemia, Lymphocytic, Chronic, B-Cell/drug therapy , Leukemia, Prolymphocytic/etiology , Vidarabine/analogs & derivatives , Adult , Aged , Female , Humans , Leukemia, Lymphocytic, Chronic, B-Cell/pathology , Male , Middle Aged , Neoplasm Staging , Treatment Outcome , Vidarabine/pharmacology , Vidarabine/therapeutic use
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