10 results on '"Dibaj SS"'
Search Results
2. Clinical characterization of adult medulloblastoma and the effect of first-line therapies on outcome; The MD Anderson Cancer Center experience.
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Majd NK, Mastall M, Lin H, Dibaj SS, Hess KR, Yuan Y, Garcia MM, Fuller GN, Alfaro KD, Gule-Monroe MK, Huse JT, Khatua S, Rao G, Sandberg DI, Wefel JS, Yeboa DN, Paulino AC, McGovern SL, Zaky W, Mahajan A, Suki D, Weathers SP, Harriso RA, De Groo JF, Puduvalli VK, and Penas-Prado M
- Abstract
Background: Adult medulloblastoma (MB) is rare, and management guidelines are largely based on pediatric clinical trials and retrospective series. Limited data exist with respect to clinical characteristics, prognostic factors, and outcomes based on first-line treatments., Methods: Two hundred adults with MB seen at a single institution from January 1978 to April 2017 were identified and followed for a median of 8.4 y (7.1, 10.3)., Results: Patient's median age at diagnosis was 29 y (18, 63). One hundred eleven (55.5%) were standard-risk, 59 (29.5%) were high-risk, and 30 (15.0%) were indeterminate. Most received post-operative radiation (RT) (184 [92.0%]), and 105 (52.5%) received first-line chemotherapy. Median overall survival (OS) was 8.8 y (7.2, 12.2) and median progression-free survival (PFS) was 6.6 y (4.9, 11.2). High-risk patients had inferior OS (Hazard ratio [HR] = 2.5 [1.5, 4.2], P = .0006) and PFS (HR = 2.3 [1.3, 3.9], P = .002) compared to standard-risk patients. Age, sex, and metastatic disease were not associated with survival. After adjusting for risk status, those who received RT plus adjuvant chemotherapy had superior PFS compared to RT plus neoadjuvant chemotherapy [HR = 0.46 (0.22, 0.95), P = .0357]. Within a subgroup for whom detailed clinical data were available, those who received RT plus adjuvant chemotherapy had improved PFS compared to RT only [HR = 0.24 (0.074-0.76), P = .016]. The substitution of cisplatin for carboplatin and the elimination of vincristine did not negatively affect outcomes., Conclusion: This is the largest single-institution retrospective study of adult MB to our knowledge and identifies standard-risk status, first-line RT and adjuvant chemotherapy as factors associated with improved outcomes., (© The Author(s) 2021. Published by Oxford University Press, the Society for Neuro-Oncology and the European Association of Neuro-Oncology.)
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- 2021
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3. The Prognostic Impact of Body Composition for Locally Advanced Breast Cancer Patients Who Received Neoadjuvant Chemotherapy.
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Iwase T, Parikh A, Dibaj SS, Shen Y, Shrimanker TV, Chainitikun S, Kida K, Sapon ME, Sahin O, James A, Medrano AYD, Klopp AH, and Ueno NT
- Abstract
Our previous study indicated that a high amount of visceral adipose tissue was associated with poor survival outcomes in patients with early breast cancer who received neoadjuvant chemotherapy. However, inconsistency was observed in the prognostic role of body composition in breast cancer treatment outcomes. In the present study, we aimed to validate our previous research by performing a comprehensive body composition analysis in patients with a standardized clinical background. We included 198 patients with stage III breast cancer who underwent neoadjuvant chemotherapy between January 2007 and June 2015. The impact of body composition on pathologic complete response and survival outcomes was determined. Body composition measurements had no significant effect on pathologic complete response. Survival analysis showed a low ratio of total visceral adipose tissue to subcutaneous adipose tissue (V/S ratio ≤ 34) was associated with shorter overall survival. A changepoint method determined that a V/S ratio cutoff of 34 maximized the difference in overall survival. Our study indicated the prognostic effect of body composition measurements in patients with locally advanced breast cancer compared to those with early breast cancer. Further investigation will be needed to clarify the biological mechanism underlying the association of V/S ratio with prognosis in locally advanced breast cancer.
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- 2021
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4. Cancer Patients' Perceived Difficulties Filling Opioid Prescriptions After Receiving Outpatient Supportive Care.
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Brown JH, Torres HP, Maddi RD, Williams JL, Dibaj SS, Liu D, and Bruera E
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- Analgesics, Opioid therapeutic use, Drug Prescriptions, Female, Humans, Male, Middle Aged, Outpatients, Practice Patterns, Physicians', Neoplasms drug therapy, Neoplasms epidemiology, Opioid-Related Disorders drug therapy
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Context: Limited access to opioids for patients with cancer has been reported as a potential unintended consequence of recent regulations restricting opioid use and prescribing practices. To our knowledge, there are a limited number of peer-reviewed studies that evaluate the perceived difficulties of the patients with cancer when filling their opioid prescription. To understand these difficulties, we surveyed patients receiving opioids in our outpatient supportive care center (SCC)., Objectives: The primary objective of this study was to evaluate cancer patients' perceptions of overall difficulties when filling their opioid prescription. Secondary objectives included determining associations between patient characteristics and difficulty and comparing difficulty between filling opioid and nonopioid prescriptions., Methods: Patients with cancer receiving opioids that had been seen two times or more at our SCC were asked to complete a survey. The information collected included patient demographics, clinical characteristics, and patients' experiences filling their opioid prescription., Results: The patients' median age was 60 years; 54% were female and 69% were white. Forty-four patients (32%) reported that they have experienced difficulty filling their opioid prescription. More than 25% of those 44 patients perceived difficulty from interactions with the pharmacy and/or pharmacist. Forty-six patients (33%) reported more difficulty filling their opioid prescriptions than filling their nonopioid prescriptions., Conclusion: This study provides evidence that patients with cancer visiting our SCC perceived difficulties obtaining their opioid prescriptions. The results suggest that negative interactions with the pharmacy and/or pharmacist contribute to their perceived difficulty. Additional research is needed to further characterize the contributors of the difficulties patients with cancer face in filling their opioid prescriptions., (Published by Elsevier Inc.)
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- 2020
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5. Programmed Death-Ligand 1 Heterogeneity and Its Impact on Benefit From Immune Checkpoint Inhibitors in NSCLC.
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Hong L, Negrao MV, Dibaj SS, Chen R, Reuben A, Bohac JM, Liu X, Skoulidis F, Gay CM, Cascone T, Mitchell KG, Tran HT, Le X, Byers LA, Sepesi B, Altan M, Elamin YY, Fossella FV, Kurie JM, Lu C, Mott FE, Tsao AS, Rinsurongkawong W, Lewis J, Gibbons DL, Glisson BS, Blumenschein GR Jr, Roarty EB, Futreal PA, Wistuba II, Roth JA, Swisher SG, Papadimitrakopoulou VA, Heymach JV, Lee JJ, Simon GR, and Zhang J
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- B7-H1 Antigen therapeutic use, Humans, Immune Checkpoint Inhibitors, Progression-Free Survival, Carcinoma, Non-Small-Cell Lung drug therapy, Lung Neoplasms drug therapy
- Abstract
Introduction: Programmed death-ligand 1 (PD-L1) expression may vary in different disease sites and at different time points of the disease course. We aimed to investigate PD-L1 heterogeneity and its usefulness as a predictive value for immune checkpoint inhibitor (ICI) therapy in patients with NSCLC., Methods: PD-L1 expression was analyzed in 1398 patients with NSCLC. The predictive value of PD-L1 for ICIs in 398 patients with metastatic NSCLC was assessed., Results: PD-L1 was significantly associated with biopsy sites (p = 0.004). Adrenal, liver, and lymph node (LN) metastases had the highest PD-L1 expression as a continuous variable and at 1% or 50% cutoff. PD-L1 expression was lower in bone and brain metastases. Among 112 patients with two specimens tested, 55 (49%) had major changes in PD-L1 falling into different clinically relevant categories (<1%, 1%-49%, ≥50%) at different time points. Previous ICI therapy was associated with significant decrease in PD-L1 compared with treatment-naive counterparts (p = 0.015). Patients with metastatic NSCLC treated with ICI (n = 398) were divided into three cohorts on the basis of biopsy sites: lung (n = 252), LN (n = 85), and distant metastasis (n = 61). Higher PD-L1 in lung or distant metastasis specimens was associated with higher response rate, longer progression-free survival, and overall survival. However, PD-L1 in LN biopsies was not associated with either response or survival., Conclusions: PD-L1 varies substantially across different anatomical sites and changes during the clinical course. PD-L1 from different biopsy sites may have different predictive values for benefit from ICIs in NSCLC., (Copyright © 2020 International Association for the Study of Lung Cancer. Published by Elsevier Inc. All rights reserved.)
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- 2020
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6. Exact unconditional inference for analyzing contingency tables in finite populations.
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Dibaj SS, Hutson AD, Warren GW, and Wilding GE
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With recent developments in computer power the application of exact inferential methods has become more feasible which has resulted in increasing popularity of these approaches. However, there is a lack of such methodology for populations with more complex structure, such as finite populations. When a small sample is drawn from a finite population, the number of individuals with a specific characteristic of interest follows hypergeometric distribution. In order to test for the comparison of two proportions in finite populations we develop an exact unconditional test. We utilize the information gained from the sample to restrict our search for the maximum p -value. Our proposed test has power equal to its competitors while maintains the pre-specified nominal significance level., Competing Interests: No potential conflict of interest was reported by the author(s)., (© 2020 Informa UK Limited, trading as Taylor & Francis Group.)
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- 2020
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7. Frequency of Concomitant Use of Opioids and Psychoactive Medications Among Cancer Patients Referred to Outpatient Palliative Care.
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Azhar A, Haider A, Ali Naqvi SM, Wong AN, Dibaj SS, Liu DD, Williams JL, and Bruera E
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- Adult, Aged, Aged, 80 and over, Demography, Drug Therapy, Combination statistics & numerical data, Female, Humans, Male, Middle Aged, Outpatients, Retrospective Studies, Young Adult, Ambulatory Care methods, Analgesics, Opioid therapeutic use, Neoplasms complications, Palliative Care methods, Psychotropic Drugs therapeutic use
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- 2019
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8. Outpatient acupuncture effects on patient self-reported symptoms in oncology care: a retrospective analysis.
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Lopez G, Garcia MK, Liu W, Spano M, Underwood S, Dibaj SS, Li Y, Moguel R, Williams J, Bruera E, and Cohen L
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Background: Increased access to complementary therapies such as acupuncture at academic medical centers has created new opportunities for management of cancer and cancer treatment related symptoms. Methods: Patients presenting for acupuncture treatment during calendar year 2016 at an outpatient integrative medicine clinic in a comprehensive cancer center were asked to complete a modified Edmonton Symptom Assessment Scale (ESAS; 16 symptoms, score 0-10, 10 worst possible) before and after each visit. ESAS subscales analyzed included global (GDS; score 0-90), physical (PHS, 0-60) and psychological distress (PSS, 0-20). ESAS symptom score change pre/post acupuncture treatment & from baseline visit to first follow up were evaluated by paired t-test. Results: Of 375 participants [mean age 55.6, 68.3% female, 73.9% white, most common cancer diagnosis of breast (32.8%) and thoracic/head & neck (25.9%)], 73.3% had at least one follow up acupuncture treatment [mean 4.6 (SD 5.1) treatments]. Highest/worst symptoms at baseline were poor sleep (3.92), fatigue (3.43), well-being (3.31), and pain (3.29). Statistically significant reduction/improvement (pre/post) was observed for all ESAS symptoms and subscales for the initial acupuncture treatment (p <0.001). Hot flashes had the highest mean reduction (-1.93), followed by fatigue (-1.72), numbness/tingling (-1.70), and nausea (-1.67). Clinically significant reductions were also observed for ESAS subscales of GDS (-12.2), PHS (-8.5), and PSS (-2.6). For symptom change from initial acupuncture treatment to first follow up (pre/pre), statistically and clinically significant improvement was observed for spiritual pain (-1.10; p<0.001) and ESAS subscale of GDS (-6.09; p=0.048). Clinical response rates (reduction ≥1) on follow up were highest for symptoms of spiritual pain (58.9%), dry mouth (57.8%) and nausea (57.3%). Conclusions: Outpatient acupuncture was associated with immediate & longitudinal significant improvement across a range of symptoms commonly experienced by individuals during cancer care. Further research is needed to better understand frequency of treatments needed in clinical practice to help maintain benefit., Competing Interests: Competing Interests: The authors have declared that no competing interest exists.
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- 2018
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9. Timing of Referral and Characteristics of Uninsured, Medicaid, and Insured Patients Referred to the Outpatient Supportive Care Center at a Comprehensive Cancer Center.
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Azhar A, Yennurajalingam S, Ramu A, Zhang H, Haider A, Williams JL, Dibaj SS, Liu DD, and Bruera E
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- Female, Healthcare Disparities, Humans, Insurance Coverage, Male, Medicaid, Medically Uninsured, Middle Aged, Neoplasms epidemiology, Pain drug therapy, Pain epidemiology, Retrospective Studies, Time Factors, Time-to-Treatment, United States, Vulnerable Populations, Ambulatory Care economics, Insurance, Health, Neoplasms economics, Neoplasms therapy, Palliative Care economics, Referral and Consultation economics
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Context: Low-income patients face barriers to palliative care access, which might negatively influence symptom management and advanced care planning., Objective: Our aim was to compare time of referral and characteristics (level of symptom distress) among uninsured (indigent), low-insured (Medicaid), and insured patients presenting to our supportive care center (SCC)., Methods: We conducted a retrospective review of randomly selected 100 indigent, 100 Medicaid, and 300 insured outpatients referred during the same five-year period. We reviewed demographic and clinical characteristics including date of diagnosis of advanced cancer and of first visit to SCC, symptom assessment (Edmonton Symptom Assessment System), type and dose of opioid medication, number of total outpatient visits, and date of last contact with palliative care team., Results: Among 482 evaluable patients, indigent, Medicaid, and insured patients, respectively, had mean (SD) ages of 48 (11), 50 (12), and 63 (13) years (P < 0.001); Edmonton Symptom Assessment System pain scores at first visit of 6.7 (2.5), 5.6 (3.2), and 4.9 (3.2) (P < 0.001); nonwhite race in 60%, 49%, and 25% of cases (P < 0.001); unmarried status in 68%, 64%, and 33% of cases (P < 0.001), while 63%, 87%, and 54% of patients (P < 0.001) were on opioids with median number of encounters per month of 0.6, 0.8, and 0.5 (P = 0.001). Median survival (95% CI) from first visit to last contact was 4.6 (2.8-6.2), 5.4 (3.5-7), and 5.6 (4.7-7.3) months (P = 0.036)., Conclusion: Patients with limited or no insurance had significantly higher pain and were more frequently on opioids, younger, nonwhite, and not married. They required higher number of SCC follow-up visits. Insurance status did not affect timing of SCC referral or follow-ups at our cancer center., (Copyright © 2017 American Academy of Hospice and Palliative Medicine. Published by Elsevier Inc. All rights reserved.)
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- 2018
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10. Cranial Electrotherapy Stimulation for the Management of Depression, Anxiety, Sleep Disturbance, and Pain in Patients With Advanced Cancer: A Preliminary Study.
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Yennurajalingam S, Kang DH, Hwu WJ, Padhye NS, Masino C, Dibaj SS, Liu DD, Williams JL, Lu Z, and Bruera E
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- Aged, Anxiety etiology, Anxiety metabolism, Biomarkers metabolism, Cancer Pain metabolism, Depression etiology, Depression metabolism, Feasibility Studies, Female, Humans, Male, Middle Aged, Neoplasms complications, Neoplasms metabolism, Neoplasms psychology, Pain Management, Preliminary Data, Saliva metabolism, Sleep Initiation and Maintenance Disorders etiology, Sleep Initiation and Maintenance Disorders metabolism, Treatment Outcome, Anxiety therapy, Cancer Pain therapy, Depression therapy, Electric Stimulation Therapy, Neoplasms therapy, Sleep Initiation and Maintenance Disorders therapy
- Abstract
Context: Cranial electrotherapy stimulation (CES) is a safe modulation of brain activity for treating depression, anxiety, insomnia, and pain. However, there are no published studies in patients with advanced cancer (ACPs)., Objectives: The aim of the study was to determine the feasibility and preliminary efficacy of a four-week CES intervention on depression, anxiety, sleep disturbance, and pain scores. Concurrent salivary biomarker studies were conducted., Methods: In this one group open label pre- and post-intervention study with a four-week CES intervention, ACPs with one or more of four moderate intensity (≥3/10) Edmonton Symptom Assessment Scale (ESAS) symptoms (depression, anxiety, sleep disturbance, and pain) were eligible. Adherence (0%-100%), satisfaction rates (0-10), and safety were assessed. ESAS, Hospital Anxiety and Depression Scale (HADS), Pittsburgh Sleep Quality Index, Brief Pain Inventory, and salivary levels (cortisol, alpha amylase, C-reactive protein, and interleukin-1β, and interleukin-6) were assessed from baseline to Week 4., Results: Thirty-three of 36 patients (92%) completed the CES. Median (interquartile range) adherence CES use and satisfaction scores were 93% (89-100) and 10% (9-10), respectively, and the adherence criteria was met in the study. CES use was safe (no Grade 3 or higher adverse events). HADS anxiety (P < 0.001), HADS depression (P = 0.024), ESAS anxiety (P = 0.001), ESAS depression (P = 0.025), Brief Pain Inventory pain (P = 0.013), Pittsburgh Sleep Quality Index daytime dysfunction (P = 0.002), and medication use (P = 0.006) scores improved after four-week CES treatment., Conclusion: In this preliminary study, we found that the use of CES was safe and feasible in ACP. The use of CES was associated with significant improvement of depression, anxiety, pain, and sleep scores. These findings support further studies of CES in ACP for symptom control., (Copyright © 2017 American Academy of Hospice and Palliative Medicine. Published by Elsevier Inc. All rights reserved.)
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- 2018
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