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Casale TB, Corbridge T, Germain G, Laliberté F, MacKnight SD, Boudreau J, Duh MS, Deb A. Real-world association between systemic corticosteroid exposure and complications in US patients with severe asthma. Allergy Asthma Clin Immunol 2024; 20:25. [PMID: 38532489 DOI: 10.1186/s13223-024-00882-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Accepted: 02/20/2024] [Indexed: 03/28/2024]
Abstract
BACKGROUND Systemic corticosteroid (SCS) use remains widespread among patients with severe asthma, despite associated complications. OBJECTIVE Evaluate the association between cumulative SCS exposure and SCS-related complications in severe asthma. METHODS This retrospective, longitudinal study used claims data from the Optum Clinformatics Data Mart database (GSK ID: 214469). Eligible patients (≥ 12 years old) had an asthma diagnosis and were divided into two cohorts: SCS use and non/burst-SCS use. Patients in the SCS use cohort had a claim for a daily prednisone-equivalent dose ≥ 5 mg SCS following ≥ 6 months of continuous SCS use; those in the non/burst-SCS cohort had no evidence of continuous SCS use and had a non-SCS controller/rescue medication initiation claim. For each cohort, the date of the qualifying claim was the index date. SCS users were further stratified by SCS use during each quarter of follow-up: low (≤ 6 mg/day), medium (> 6-12 mg/day), high (> 12 mg/day), and continuous high (≥ 20 mg/day for 90 days). SCS-related complications were evaluated in the quarter following SCS exposure. The adjusted odds ratios (OR) of experiencing SCS-related complications during follow-up in each of the SCS use groups versus the non/burst SCS cohort were calculated using generalized estimating equations models. RESULTS SCS and non/burst-SCS use cohorts included 7473 and 89,281 patients (mean follow-up: 24.6 and 24.2 months), respectively. Compared with the non/burst-SCS use cohort, medium, high, and continuous high SCS use was associated with greater odds of any SCS-related complication (adjusted OR [95% confidence interval]: 1.30 [1.21, 1.39], 1.49 [1.35, 1.64] and 1.63 [1.40, 1.89], respectively) including increased acute gastrointestinal, cardiovascular, and immune system-related complications, and chronic cardiovascular, metabolic/endocrine, central nervous system, bone-/muscle-related, ophthalmologic, and hematologic/oncologic complications. Low-dose SCS use was also associated with significantly increased odds of acute gastrointestinal and immune system-related complications, and chronic bone-/muscle-related and hematologic/oncologic complications versus the non/burst-SCS use cohort. CONCLUSION SCS use, even at low doses, is associated with increased risk of SCS-related complications among patients with severe asthma.
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Affiliation(s)
- Thomas B Casale
- Division of Allergy/Immunology, University of South Florida, Tampa, FL, USA
| | | | - Guillaume Germain
- Health Economics and Outcomes Research, Groupe d'analyse, Montréal, QC, Canada
| | - François Laliberté
- Health Economics and Outcomes Research, Groupe d'analyse, Montréal, QC, Canada
| | - Sean D MacKnight
- Health Economics and Outcomes Research, Groupe d'analyse, Montréal, QC, Canada
| | - Julien Boudreau
- Health Economics and Outcomes Research, Groupe d'analyse, Montréal, QC, Canada
| | - Mei S Duh
- Health Economics and Outcomes Research, Analysis Group Inc, Boston, MA, USA
| | - Arijita Deb
- Value Evidence and Outcomes, GSK, Upper Providence, PA, USA.
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Singer D, Thompson-Leduc P, Poston S, Gupta D, Cheng WY, Ma S, Devine F, Duh MS, Curtis JR. Dr Singer et al reply. J Rheumatol 2024; 51:324-326. [PMID: 38428985 DOI: 10.3899/jrheum.2023-0803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2024]
Affiliation(s)
| | | | | | | | | | - Siyu Ma
- GSK, Philadelphia, Pennsylvania, now with Real World Evidence, Chiesi USA, Cary, North Carolina, USA
| | - Francesca Devine
- Analysis Group, Inc., New York, now with Komodo Health, New York, New York, USA
| | - Mei S Duh
- Analysis Group, Inc., Boston, Massachusetts, USA
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Hansel NN, Abbott CB, Averell CM, Germain G, Laliberté F, Mahendran M, Duh MS, Settipane RA. Real-world users of triple therapy for asthma in the US. Am J Manag Care 2024; 30:74-81. [PMID: 38381542 DOI: 10.37765/ajmc.2024.89494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
OBJECTIVES For patients with asthma who remain symptomatic on a medium-dose inhaled corticosteroid/long-acting β2 agonist, addition of a long-acting muscarinic antagonist as a supplementary controller is a recommended option. However, real-world data on the characteristics and treatment patterns of these patients are limited. This study described the demographics and clinical characteristics of new users of single- or multiple-inhaler triple therapy and treatment patterns preceding triple-therapy initiation. STUDY DESIGN This retrospective cohort study used medical and pharmacy claims data from the IQVIA PharMetrics Plus database. METHODS The study population comprised adults with asthma with or without chronic obstructive pulmonary disease (COPD) initiating triple therapy with single-inhaler fluticasone furoate/umeclidinium/vilanterol (FF/UMEC/VI; 100/62.5/25 μg) or multiple-inhaler triple therapy (MITT) between September 18, 2017, and September 30, 2019. Demographics, clinical characteristics, and treatment patterns in the 12 months preceding triple-therapy initiation were described (baseline period). RESULTS A total of 12,395 patients were included. Among FF/UMEC/VI initiators with asthma (n = 1301), the mean age was 49.0 years and 59.3% were women. During the baseline period, 81.5% of patients used controller therapy, 94.7% used rescue medications, and 42.0% reported at least 1 asthma-related exacerbation; the annual mean exacerbation rate was 0.96. Similar trends were observed among patients with asthma initiating MITT and patients with comorbid asthma-COPD initiating FF/UMEC/VI or MITT. CONCLUSION In real-world practice, triple therapy is often utilized following other asthma controller medication use. High disease burden, as evidenced by substantial use of rescue medications and continued asthma-related exacerbations, suggests that patients may not have achieved adequate asthma control prior to triple-therapy initiation.
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Zakharia Y, Huynh L, Du S, Chang R, Pi S, Sundaresan S, Duh MS, Zanotti G, Thomaidou D. Impact of Therapy Management on Axitinib-Related Adverse Events in Patients With Advanced Renal Cell Carcinoma Receiving First-Line Axitinib + Checkpoint Inhibitor. Clin Genitourin Cancer 2023; 21:e343-e351. [PMID: 37087399 DOI: 10.1016/j.clgc.2023.03.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 03/17/2023] [Accepted: 03/28/2023] [Indexed: 04/05/2023]
Abstract
INTRODUCTION There are limited real-world data on the effectiveness of strategies used to manage adverse events (AEs) in patients with advanced renal cell carcinoma (RCC) treated with axitinib. This retrospective chart review examined the AE profile and effect of axitinib modifications on AE resolution/improvement and treatment discontinuation. METHODS A retrospective physician-administered chart review was conducted. Adult patients with advanced RCC treated with first-line axitinib plus checkpoint inhibitor (CPI) therapy (ie, avelumab or pembrolizumab) and who had documented frequently reported axitinib-related AEs of fatigue, diarrhea, nausea, hypertension, or palmar-plantar erythrodysesthesia were included. Physician characteristics, patient characteristics, AE characteristics, AE management strategies used, AE resolution/improvement, and treatment duration were described. The effect of strategies used to manage AEs (axitinib dose reduction or treatment interruption) on AE resolution/improvement was evaluated by logistic regression. RESULTS Among 219 patients (median age: 62 years, 65% male), 70 (32%) were treated with axitinib + avelumab and 149 (68%) received axitinib + pembrolizumab. Axitinib modifications increased the likelihood of AE resolution/improvement compared with no modifications (adjusted odds ratio: 6.34, P < .001). In the subset of patients who discontinued treatment among those with or without axitinib modifications, mean treatment duration was 7.0 and 1.7 months, respectively. CONCLUSION Toxicities experienced by patients with advanced RCC treated with first-line axitinib-CPI in the real world can be effectively managed by axitinib modifications, thereby prolonging treatment duration. (Clinicaltrials.gov identifier: NCT04682587).
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Affiliation(s)
- Yousef Zakharia
- University of Iowa, Holden Comprehensive Cancer Center, Iowa City, IA.
| | | | - Shawn Du
- Analysis Group, Inc, New York, NY
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Azzoli C, Huynh L, Yi D, Duh MS, Cai B. Authors' Response to "Letter to the Editor" Submitted by S. Wang and W. Liu (re: "Retrospective Study to Examine Prognostic Value of C-Reactive Protein in Patients With Surgically Resectable Non-Small-Cell Lung Cancer". Clin Lung Cancer 2023; 24:e197. [PMID: 37198059 DOI: 10.1016/j.cllc.2023.04.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 04/14/2023] [Indexed: 05/19/2023]
Affiliation(s)
| | | | | | | | - Beilei Cai
- Novartis Pharmaceuticals Corporation, East Hanover, NJ
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Azzoli C, Huynh L, Yi D, Duh MS, Cai B. Retrospective Study to Examine Prognostic Value of C-Reactive Protein in Patients With Surgically Resectable Non-Small-Cell Lung Cancer. Clin Lung Cancer 2023; 24:329-338. [PMID: 36842852 DOI: 10.1016/j.cllc.2023.01.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 01/11/2023] [Accepted: 01/20/2023] [Indexed: 02/10/2023]
Abstract
BACKGROUND This study evaluated the association between elevated C-reactive protein (CRP) and clinical outcomes among adults treated with surgery for non-small cell lung cancer (NSCLC) in the US. MATERIALS AND METHODS Adults with NSCLC who underwent lung cancer surgery and had ≥1 CRP measurement prior to, or >1 month following, index surgery were identified in the Optum Clinformatics claims database. The association between elevated CRP (>10 mg/L) and risk of NSCLC recurrence/death was assessed separately during the 6 months before surgery (pre surgery cohort) and 2 years following surgery (post-surgery cohort) using multivariate regressions and Kaplan-Meier analysis. RESULTS After adjusting for baseline demographic and clinical characteristics among patients in the pre surgery cohort with index surgery between 2016 to 2020 (n = 104), the incidence rate ratio (IRR) for NSCLC recurrence between elevated vs. non-elevated CRP was 2.17 (95% confidence interval [CI]=1.03-4.60; P = .04). In the post surgery cohort (n = 264), the adjusted IRR for disease recurrence (elevated vs. non-elevated CRP) was 2.22 (95% CI=1.05-4.70; P = .04). In the pre surgery cohort, the odds of death were nearly two-fold (odds ratio [OR]=1.91; 95% CI=1.06-3.42; P = .03) among patients with elevated CRP. In the post surgery cohort, the OR was 1.62 (95% CI=0.88-2.97; P = .12). Among those with persistently elevated CRP prior to surgery, there was a significant overall trend of increased CRP over the 5-year period. CONCLUSION These results support the association between elevated CRP and a higher risk of NSCLC recurrence/death in pre- and postsurgery cohorts. This study may shed lights on inflammation-suppressing treatments in patients with NSCLC.
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Affiliation(s)
| | | | | | | | - Beilei Cai
- Novartis Pharmaceuticals Corporation, East Hanover, NJ
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Singer D, Thompson-Leduc P, Poston S, Gupta D, Cheng WY, Ma S, Devine F, Duh MS, Curtis JR. Incidence of Herpes Zoster in Patients With Rheumatoid Arthritis in the United States: A Retrospective Cohort Study. J Rheumatol 2023:jrheum.220986. [PMID: 36725054 DOI: 10.3899/jrheum.220986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
OBJECTIVE To estimate the incidence of herpes zoster (HZ) in patients with rheumatoid arthritis (RA) compared with the general population in the USA. METHODS This retrospective, longitudinal cohort study used data from an administrative claims database containing both commercial and Medicare Advantage Part D data, with a data period from October 2015 to February 2020. Patients were aged ≥ 18 years and divided into 2 cohorts: patients with RA and patients without RA. Diagnosis and procedure codes were used to identify HZ cases and calculate incidence rates (IRs) of HZ in the 2 cohorts. Data were stratified by age group (ie, 18-49, 18-29, 30-39, 40-49, 50-64, and ≥ 65 yrs) and RA therapy type. IR ratios (IRRs), adjusted by cohort baseline characteristics, were estimated using generalized linear models to compare the incidence of HZ between cohorts. RESULTS The overall IR of HZ was higher in the RA cohort (21.5 per 1000 person-years [PY]; N = 67,650) than in the non-RA cohort (7.6 per 1000 PY; N = 11,401,743). The highest IRs in both cohorts were observed in the age group of ≥ 65 yrs (23.4 and 11.4 per 1000 PY in the RA cohort and non-RA cohort, respectively). The overall adjusted IRR of HZ was 1.93 (95% CI 1.87-1.99, P < 0.001) for the RA cohort compared with the non-RA cohort. In the RA cohort, the highest IRs by medication class were observed in patients using corticosteroids and those using Janus kinase inhibitors. CONCLUSION These results highlight the increased incidence of HZ in patients with RA.
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Affiliation(s)
- David Singer
- D. Singer, PharmD, GSK, Philadelphia, Pennsylvania, USA
| | | | - Sara Poston
- S. Poston, PharmD, GSK, Philadelphia, Pennsylvania, USA
| | | | - Wendy Y Cheng
- W.Y. Cheng, PhD, Analysis Group Inc., Boston, Massachusetts, USA
| | - Siyu Ma
- S. Ma, PhD, GSK, Philadelphia, Pennsylvania, USA
| | | | - Mei S Duh
- M.S. Duh, ScD, Analysis Group Inc., Boston, Massachusetts, USA
| | - Jeffrey R Curtis
- J.R. Curtis, MD, University of Alabama at Birmingham, Birmingham, Alabama, USA
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Chung ES, Rickard J, Lu X, DerSarkissian M, Zichlin ML, Cheung HC, Swartz N, Greatsinger A, Duh MS. Real-world clinical burden among patients with and without heart failure worsening after cardiac resynchronization therapy. Curr Med Res Opin 2022; 38:1489-1498. [PMID: 35727103 DOI: 10.1080/03007995.2022.2092374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
OBJECTIVE Cardiac resynchronization therapy (CRT) can improve cardiac function in patients with heart failure (HF); however, in some patients, HF worsens despite CRT. This study characterized the long-term clinical burden of patients with and without HF worsening (HFW) within 6 months post CRT implantation. METHODS A claims database (2007-2018) was used to identify two cohorts of adults: those with HFW within 180 days post-CRT and those with no HFW (NHFW). The evaluated clinical outcomes were cardiovascular events/complications, HF-related interventions, hospice enrollment, and all-cause mortality. Inverse probability of treatment weighting (IPTW) was used to adjust for confounders; adjusted comparisons were assessed using weighted Cox proportional hazard ratios (HRs). RESULTS Among the 12,753 adults analyzed (HFW: N = 4,785; NHFW: N = 7,968), the mean age was 72 years and the mean duration of follow-up was approximately 2 years. The clinical burden was greater for HFW than for NHFW in terms of all-cause mortality (19.7% vs. 12.1%) and occurrence of atrial fibrillation (57.4% vs. 51.2%). In the IPTW-adjusted Cox proportional hazard analyses, patients with HFW had a 54% higher average hazard of experiencing all-cause mortality compared to NHFW (adjusted average HR = 1.54, 95% confidence interval [CI]: 1.41-1.70; p < .001). Of the clinical events experienced by ≥5% of patients, the greatest differences in average hazard were for HF decompensation (adjusted average HR = 1.83, 95% CI: 1.60-2.09) and HF decompensation or death (HR = 1.63, 95%CI: 1.50-1.77). CONCLUSION Patients with early HFW post-CRT experienced a significantly higher clinical burden than those without HFW. Vigilance for signs of worsening HF in the first 6 months post-CRT is warranted.
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Affiliation(s)
- Eugene S Chung
- The Lindner Clinical Research Center at The Christ Hospital, Cincinnati, OH, USA
| | | | - Xiaoxiao Lu
- Medtronic Global CRHF Headquarters, Mounds View, MN, USA
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Yang X, Yoo HK, Amin S, Cheng WY, Sundaresan S, Zhang L, Duh MS. Burden Among Caregivers of Pediatric Patients with Neurofibromatosis Type 1 (NF1) and Plexiform Neurofibroma (PN) in the United States: A Cross-Sectional Study. Neurol Ther 2022; 11:1221-1233. [PMID: 35679001 PMCID: PMC9178532 DOI: 10.1007/s40120-022-00365-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Accepted: 05/11/2022] [Indexed: 11/12/2022] Open
Abstract
Introduction Patients with neurofibromatosis type 1 (NF1) may develop plexiform neurofibromas (PNs) that can cause disfigurement, pain, and dysfunction, and may even be life-threatening. Studies have indicated NF1-PN can substantially impact the quality of life (QoL) of pediatric patients. However, research on caregiver burden is scarce. Methods Caregivers of pediatric patients ages 2–18 years with NF1-PN in the USA were recruited through the Children’s Tumor Foundation to participate in an online cross-sectional survey (December 2020–January 2021). Caregiver burden was measured using the Zarit Burden Interview (ZBI), and productivity loss from patientcare was measured using the Work Productivity and Activity Impairment questionnaire, adapted for caregiving (WPAI:CG). Results Ninety-five caregivers were recruited with a median age of 44.0 years. Most were female (88.4%), white/Caucasian (85.3%), and did not have NF1 or PN (86.3% and 89.5%, respectively). Commonly reported health conditions among caregivers include anxiety (48.4%) and depression (34.7%). On the ZBI (range 0–88; higher = greater burden), mean (SD) scores were 23.0 (13.8) and 12.7% of caregivers reported moderate–severe (scores 41–60) or severe burden (scores 61–88). Fifty-six caregivers were employed and working in the 7 days prior to completing the WPAI:CG. They reported missing an average of 6.9% of their working hours and an average reduction of 17.3% of on-the-job effectiveness, contributing to 22.3% loss in work productivity. Among all 95 caregivers, an average of 17.2% of regular daily activities were impaired. Conclusions The burden among caregivers of pediatric patients with NF1-PN is considerable and underscores an unmet need for better disease management.
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Affiliation(s)
| | | | | | | | | | | | - Mei S Duh
- Analysis Group, Inc., Boston, MA, USA
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Averell CM, Laliberté F, Germain G, Slade DJ, Duh MS, Spahn J. Disease burden and treatment adherence among children and adolescent patients with asthma. J Asthma 2021; 59:1687-1696. [PMID: 34346263 DOI: 10.1080/02770903.2021.1955377] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
OBJECTIVE To assess asthma burden and medication adherence in a US de-identified patient level claims database. METHODS This retrospective observational study used the IQVIA PHARMETRICS PLUS database to identify patients aged 5-17 years, diagnosed with asthma between 01/01/2012-09/30/2017 (asthma cohort), and those initiating treatment with twice-daily inhaled corticosteroids (ICS) or twice-daily ICS/long-acting beta2 agonists (LABA) (treatment cohorts; index date = first dispensing). Patient characteristics, asthma medication, and healthcare resource utilization were assessed over a 12-month baseline period. Treatment cohort endpoints were assessed in a 12-month follow-up period, including: adherence using proportion of days covered (PDC); persistence (no gap >45 days between dispensings). RESULTS The asthma cohort included 186,868 patients (112,689 children, mean age 7.9 years; 74,179 adolescents, mean age 14.3 years). During baseline, 34.5% used ICS or ICS/LABA, 24% used oral corticosteroids, 11.1% had ≥1 asthma-related emergency department visit, 2.2% had ≥1 asthma-related hospitalization. Among treatment cohorts, 47,276 and 10,247 patients initiated twice-daily ICS and ICS/LABA, respectively (mean ages: 9.9; 12.5 years). Mean PDC adherence to twice-daily ICS and ICS/LABA was 30% and 34% at 6 months (PDC ≥0.8: 4.3%; 6.1%); 21% and 24% at 12 months (PDC ≥0.8: 1.8%; 2.8%). Persistence with twice-daily ICS and ICS/LABA was 10.1% and 14.2% at 6 months; 5.6% and 8.0% at 12 months. CONCLUSIONS A large disease burden and unmet need exist among US children/adolescent asthma patients, evidenced by low use of, and poor adherence to, ICS-containing medication, the notable proportion of oral corticosteroid users, and higher-than-expected asthma-related emergency department and hospitalization rates.
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Affiliation(s)
| | | | | | - David J Slade
- GlaxoSmithKline plc., Research Triangle Park, NC, USA
| | - Mei S Duh
- Analysis Group, Inc., Boston, MA, USA
| | - Joseph Spahn
- GlaxoSmithKline plc., Research Triangle Park, NC, USA
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Wells JC, Dudani S, Gan CL, Stukalin I, Azad AA, Liow E, Donskov F, Yuasa T, Pal SK, De Velasco G, Hansen AR, Beuselinck B, Kollmannsberger CK, Powles T, McGregor BA, Duh MS, Huynh L, Heng DYC. Clinical Effectiveness of Second-line Sunitinib Following Immuno-oncology Therapy in Patients with Metastatic Renal Cell Carcinoma: A Real-world Study. Clin Genitourin Cancer 2021; 19:354-361. [PMID: 33863648 DOI: 10.1016/j.clgc.2021.03.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 02/17/2021] [Accepted: 03/03/2021] [Indexed: 11/16/2022]
Abstract
BACKGROUND Limited data exist on the clinical effectiveness of second-line (2L) vascular endothelial growth factor (receptor) targeted inhibitor (VEGF(R)i) sunitinib after first-line (1L) immuno-oncology (IO) therapy for patients with metastatic renal cell carcinoma (mRCC) in real-world settings. METHODS A retrospective cohort study among adult patients with mRCC treated with 2L sunitinib following 1L IO was conducted from select International mRCC Database Consortium (IMDC) centers. All analyses were performed overall and by 1L ipilimumab + nivolumab (IPI+NIVO) or 1L IO+VEGF(R)i. Median overall survival (mOS) and time-to-treatment discontinuation (mTTD) in 2L were estimated using Kaplan-Meier analysis. The 2L objective response rate (ORR) (complete/partial response) was reported. RESULTS Among 102 patients on 2L sunitinib, mean age was 61.3 years. IMDC risk scores at 2L initiation was available for 83 patients: 8 (9.6%) were favorable, 45 (54.2%) were intermediate, and 30 (36.1%) were poor risk. The 1L consisted of IPI+NIVO in 62 (60.8%), IO+VEGF(R)i therapy in 27 (26.5%), and IO monotherapy in 13 (12.7%) patients. Among all patients, mOS was 15.6 months (95% confidence interval [CI], 9.8-21.7), with a 1-year OS rate of 57.5% (95% CI, 45.2-68.0). mTTD was 5.4 months (95% CI, 4.2-7.2) and ORR was 22.5%. CONCLUSION Despite availability of effective 1L therapies in recent years, 2L sunitinib continues to have clinical activity after failure of 1L IO. Further studies on optimal treatment sequencing after 1L IO progression are needed.
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Affiliation(s)
- J Connor Wells
- Tom Baker Cancer Centre, University of Calgary, Department of Oncology, Calgary, Canada
| | - Shaan Dudani
- Tom Baker Cancer Centre, University of Calgary, Department of Oncology, Calgary, Canada
| | - Chun Loo Gan
- Tom Baker Cancer Centre, University of Calgary, Department of Oncology, Calgary, Canada
| | - Igor Stukalin
- Tom Baker Cancer Centre, University of Calgary, Department of Oncology, Calgary, Canada
| | - Arun A Azad
- Peter MacCallum Cancer Centre, Department of Medical Oncology, University of Melbourne, Melbourne, Australia
| | - Elizabeth Liow
- Walter and Eliza Hall Institute of Medical Research, Division of Systems Biology and Personalized Medicine, Melbourne, Australia
| | - Frede Donskov
- Aarhus University Hospital, Department of Oncology, Aarhus, Denmark
| | - Takeshi Yuasa
- Japanese Foundation for Cancer Research, Department of Urology, Tokyo, Japan
| | - Sumanta K Pal
- City of Hope Comprehensive Cancer Center, Department of Medical Oncology & Therapeutics Research, Duarte, CA, USA
| | - Guillermo De Velasco
- University Hospital 12 de Octubre, Department of Medical Oncology, Madrid, Spain
| | - Aaron R Hansen
- Princess Margaret Cancer Centre, University of Toronto, Division of Medical Oncology & Hematology, Toronto, Canada
| | - Benoit Beuselinck
- University Hospitals Leuven, Leuven Cancer Institute, Department of Oncology, Leuven, Belgium
| | | | - Thomas Powles
- Barts Cancer Institute, Cancer Research UK Experimental Cancer Medicine Centre, Queen Mary University of London, Department of Genitourinary Oncology, London, United Kingdom
| | - Bradley A McGregor
- Dana Farber Cancer Institute, Harvard Medical School, Lank Center for Genitourinary Oncology, Boston, MA, USA
| | - Mei S Duh
- Analysis Group, Inc., Boston, MA, USA
| | | | - Daniel Y C Heng
- Tom Baker Cancer Centre, University of Calgary, Department of Oncology, Calgary, Canada.
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Chung ES, Rickard J, Lu X, DerSarkissian M, Zichlin ML, Cheung HC, Swartz N, Greatsinger A, Duh MS. Real-World Economic Burden Among Patients With And Without Heart Failure Worsening After Cardiac Resynchronization Therapy. Adv Ther 2021; 38:441-467. [PMID: 33141415 DOI: 10.1007/s12325-020-01536-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Accepted: 10/14/2020] [Indexed: 10/23/2022]
Abstract
INTRODUCTION Although cardiac resynchronization therapy (CRT) has the potential to improve cardiac function in patients with heart failure (HF), a considerable portion of patients do not respond to therapy. This study assessed the economic burden among patients with and without HF worsening after receiving CRT in real-world practice. METHODS In this retrospective claims-based study using Optum's de-identified Clinformatics® Data Mart Database (January 2007-December 2018), adults who received CRT were stratified into two cohorts based on whether they showed evidence of HF worsening within 180 days post-CRT implantation. Inverse probability of treatment weighting (IPTW) was used to adjust for confounding, accounting for demographics (e.g., age, sex), the Quan-Charlson Comorbidity Index, other clinical characteristics, healthcare resource utilization (HRU), and healthcare costs during the 180 days pre-CRT (baseline period). Annualized all-cause and congestive HF-related HRU and healthcare costs from payer and patient perspectives were assessed from day 181 post-CRT (follow-up period), and compared between cohorts using incidence rate ratios (IRRs) and cost ratios (CRs). RESULTS This study included 12,753 patients (n = 4785 with HF worsening; n = 7968 without). Mean age was 72 years and roughly two-thirds were male. Baseline characteristics were balanced between cohorts post-IPTW. During follow-up, patients with HF worsening had significantly greater annual all-cause inpatient [adjusted IRR (95% confidence interval) = 1.55 (1.44, 1.66), p < 0.001], outpatient [adjusted IRR = 1.46 (1.32, 1.61), p < 0.001], and emergency department [adjusted IRR = 1.31 (1.22, 1.41), p < 0.001] visits. Mean annual total per patient payer-paid amounts were significantly higher for patients with HF worsening versus without HF worsening [adjusted CR = 1.68 (1.56, 1.80), p < 0.001]. Annual patient-paid medical costs were also higher for patients with HF worsening [adjusted CR = 1.31 (1.25, 1.38), p < 0.001]. Results were similar for congestive HF-related HRU and costs. CONCLUSIONS The incremental economic burden among patients with HF worsening following CRT is substantial. Efforts aimed at CRT optimization may help reduce this burden.
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Siffel C, DerSarkissian M, Kponee-Shovein K, Spalding W, Gu YM, Cheng M, Duh MS. Suicidal ideation and attempts in the United States of America among stimulant-treated, non-stimulant-treated, and untreated patients with a diagnosis of attention-deficit/hyperactivity disorder. J Affect Disord 2020; 266:109-119. [PMID: 32063553 DOI: 10.1016/j.jad.2020.01.075] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Revised: 01/23/2019] [Accepted: 01/19/2020] [Indexed: 01/28/2023]
Abstract
BACKGROUND Studies of the association between attention-deficit/hyperactivity disorder (ADHD) drug therapy and suicidal ideation and attempts (SIA) have conflicting results. METHODS Cohorts of patients with ADHD aged 6 years or older with at least one pharmacy claim for a central nervous system (CNS) stimulant or a non-stimulant, or with no claims for ADHD pharmacotherapy, were identified in the US IBM® MarketScan® Research Database from January 2008 to March 2018. Incidence density rates (IDRs) of SIA (i.e., claims for suicide and self-inflicted poisoning, suicide and self-inflicted injuries, or suicidal ideation) were calculated. Cohorts were compared (CNS stimulants vs non-stimulants; CNS stimulants vs no pharmacotherapy) using hazard ratios (HRs) estimated from Cox proportional hazards models. Inverse-probability-of-treatment weighting (IPTW) was used to control for confounding. RESULTS The study included 797,189 patients (CNS stimulants, 622,536; non-stimulants, 54,615; no pharmacotherapy, 120,038). IDRs of SIA (per 1000 patient-years) were: CNS stimulants, 5.8; non-stimulants, 10.5; and no pharmacotherapy, 10.0. The overall SIA risk was significantly lower with CNS stimulants than with non-stimulants (IPTW-adjusted HR = 0.70, 95% confidence interval = 0.61-0.81, p < 0.001) and no pharmacotherapy (0.62, 0.57-0.67, p < 0.001). LIMITATIONS SIA assessment was based on diagnostic codes; suicidal ideation may not have been reported; completed suicides were generally not captured; and treatment was not verified. CONCLUSIONS In this population-based study of patients with ADHD, SIA risk was significantly lower in those receiving CNS stimulants relative to those receiving non-stimulants or no pharmacotherapy, suggesting that CNS stimulants may attenuate SIA risk.
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Affiliation(s)
- Csaba Siffel
- Global Outcomes Research and Epidemiology, Shire, now a part of Takeda, Lexington, MA, USA; College of Allied Health Sciences, Augusta University, Augusta, GA, USA.
| | | | | | - William Spalding
- Global Outcomes Research and Epidemiology, Shire, now a part of Takeda, Lexington, MA, USA
| | | | - Mu Cheng
- Analysis Group, Inc., Boston, MA, USA
| | - Mei S Duh
- Analysis Group, Inc., Boston, MA, USA
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14
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Colao A, Grasso LFS, Di Cera M, Thompson-Leduc P, Cheng WY, Cheung HC, Duh MS, Neary MP, Pedroncelli AM, Maamari R, Pivonello R. Association between biochemical control and comorbidities in patients with acromegaly: an Italian longitudinal retrospective chart review study. J Endocrinol Invest 2020; 43:529-538. [PMID: 31741320 PMCID: PMC7067716 DOI: 10.1007/s40618-019-01138-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Accepted: 10/26/2019] [Indexed: 12/17/2022]
Abstract
PURPOSE Achieving biochemical control (normalization of insulin-like growth factor-1 [IGF-1] and growth hormone [GH]) is a key goal in acromegaly management. However, IGF-1 and GH fluctuate over time. The true potential impact of time-varying biochemical control status on comorbidities is unclear and relies on multiple, longitudinal IGF-1 and GH measurements. This study assessed the association between time-varying biochemical control status and onset of selected comorbidities in patients with acromegaly. METHODS Medical charts of adults with confirmed acromegaly and ≥ 6 months of follow-up at an Italian endocrinology center were reviewed. Patients were followed from the first diagnosis of acromegaly at the center until loss to follow-up, chart abstraction, or death. Biochemical control status was assessed annually and defined as IGF-1 ≤ the upper limit of normal, or GH ≤ 2.5 µg/L in the few cases where IGF-1 was unavailable. Time-varying Cox models were used to assess the association between biochemical control status and comorbidities. RESULTS Among 150 patients, 47% were female, average age at diagnosis was 43.1, and mean length of follow-up was 10.4 years. Biochemical control was significantly associated with a lower hazard of diabetes (HR = 0.36, 95% CI 0.15; 0.83) and cardiovascular system disorders (HR = 0.54, 95% CI 0.31; 0.93), and a higher hazard of certain types of arthropathy (HR = 1.68, 95% CI 1.04; 2.71); associations for other comorbidities did not reach statistical significance. CONCLUSION Results further support the importance of achieving biochemical control, as this may reduce the risk of high-burden conditions, including diabetes and cardiovascular system disorders. The association for arthropathy suggests irreversibility of this impairment. Due to limitations, caution is required when interpreting these results.
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Affiliation(s)
- A Colao
- Dipartimento di Medicina Clinica e Chirurgia, Sezione di Endocrinologia, Università Federico II di Napoli, Via S. Pansini 5, 80131, Naples, Italy.
| | - L F S Grasso
- Dipartimento di Medicina Clinica e Chirurgia, Sezione di Endocrinologia, Università Federico II di Napoli, Via S. Pansini 5, 80131, Naples, Italy
| | - M Di Cera
- Dipartimento di Medicina e Scienze della Saluta di V. Tiberio, Università degli Studi del Molise, Campobasso, Italy
| | | | - W Y Cheng
- Analysis Group, Inc., Boston, MA, USA
| | | | - M S Duh
- Analysis Group, Inc., Boston, MA, USA
| | - M P Neary
- Novartis Pharmaceuticals Corporation, East Hanover, NJ, USA
| | | | - R Maamari
- Novartis Pharmaceuticals Corporation, East Hanover, NJ, USA
| | - R Pivonello
- Dipartimento di Medicina Clinica e Chirurgia, Sezione di Endocrinologia, Università Federico II di Napoli, Via S. Pansini 5, 80131, Naples, Italy
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Freedland SJ, De Hoedt AM, DerSarkissian M, Chang R, Satija A, Nguyen C, Park S, Aillaud A, Drea EJ, Duh MS, Polascik TJ, Szatrowski TP. Veterans affairs (VA) prostate cancer treatment (Tx) sequencing (VAPCaTS): A real-world study. J Clin Oncol 2020. [DOI: 10.1200/jco.2020.38.6_suppl.54] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
54 Background: Limited real-world data are available on tx sequence for patients (pts) with metastatic hormone-sensitive PC (mHSPC) treated with androgen deprivation therapy (ADT) plus docetaxel (D) or abiraterone (A) who progress to metastatic castrate-resistant prostate cancer (mCRPC). Methods: VA electronic medical records were used to retrospectively analyze 240 men treated for mHSPC with ADT and D (n=208; selected to be overrepresented) from 07/2014-08/2018 or ADT and A (n=32) from 12/2016-09/2018 and receiving at least one tx after progressing to mCRPC. Results: For D and A cohorts respectively, median age at mHSPC diagnosis was 65.2 and 70.8 yrs; 62% and 77% were white; 98% and 100% had bone metastases (mets), 40% and 34% had lymph node mets, 21% and 16% had lung mets, and 20% and 6% had liver mets; median follow-up after ADT start was 2.2 and 1.4 yrs. Pts in D and A cohorts had 56% and 36% low, 33% and 45% intermediate, and 11% and 19% high Halabi risk scores at mCRPC, respectively. Among all pts, max mCRPC tx lines was 6; 106 (44%) had only one line, 71 (30%) had two lines, and 63 (26%) pts had ≥ three lines. Across all mCRPC tx lines, 71 (30%) received a taxane at some point (47 D, 40 cabazitaxel [C]). Txs for first and second line mCRPC are shown in the Table. For D pts who received androgen-receptor targeted agents (ARTA) as first mCRPC tx and received any second mCRPC tx, 70 (62%) were treated with back-to-back ARTA. For A pts, 25 (78%) received back-to-back ARTA as first mCRPC tx. Conclusions: Most pts received ARTA as first mCRPC tx, and a large proportion of pts were treated with back-to-back ARTA. Longer follow-up is needed to assess which sequences are associated with optimal outcomes.[Table: see text]
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Affiliation(s)
| | - Amanda M. De Hoedt
- Section of Urology, Durham Veterans Affairs Health Care System, Durham, NC
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Shah BR, DerSarkissian M, Tsintzos SI, Xiao Y, May D, Lu X, Kinrich D, Davis E, Lefebvre P, Duh MS, Dasta JF. Adherence to heart failure management medications following cardiac resynchronization therapy. Curr Med Res Opin 2020; 36:199-207. [PMID: 31535559 DOI: 10.1080/03007995.2019.1670474] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Objective: The purpose of this study is to assess the real-world impact of cardiac resynchronization therapy (CRT) on adherence to heart failure (HF) medications.Methods: MarketScan administrative health care claims data from 2008 to 2014 among patients with HF were used. The date of first CRT implantation served as the index date. Adherence to guideline-directed medical therapy (GDMT) classes were compared during pre- and post-index periods using proportion of days covered (PDC). Comparisons between the two periods were made using the Wilcoxon sign-rank test for continuous PDC and McNemar's test for dichotomized PDC.Results: Increases in medication adherence were observed for major classes of HF GDMT medications. Specifically, adherence to angiotensin-converting enzyme inhibitors (ACE-I), angiotensin receptor blockers (ARB), beta blockers (BB), and furosemide increased by 22, 24, 32, and 28% (all p < .001), respectively, in the 12 months pre to 12 months post-CRT. Large increases between the pre- and post-CRT period were also observed when considering adherence as dichotomized PDC ≥0.80 in the 12 months pre- versus post-CRT.Conclusion: Adherence to HF medications significantly improved among HF patients post-CRT implantation. Further research is needed to better understand the underlying determinants of this effect, including whether the effect is attributable to factors such as enhanced patient monitoring and improved access to high-quality specialized HF care among patients receiving CRT.
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Affiliation(s)
- Bimal R Shah
- Duke University School of Medicine, Durham, NC, USA
- Livongo, Mountain View, CA, USA
| | | | | | | | - Damian May
- Medtronic Global CRHF Headquarters, Mounds View, MN, USA
| | - Xiaoxiao Lu
- Medtronic Global CRHF Headquarters, Mounds View, MN, USA
| | | | | | | | - Mei S Duh
- Analysis Group, Inc., Boston, MA, USA
| | - Joseph F Dasta
- College of Pharmacy, University of Texas, Austin, TX, USA
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Morse M, Liu E, Joish VN, Huynh L, Cheng M, Totev T, Duh MS, Lapuerta P, Metz DC. Exploring telotristat ethyl’s antiproliferative effects in patients with carcinoid syndrome (TELEACE): A real-world observational study. J Clin Oncol 2020. [DOI: 10.1200/jco.2020.38.4_suppl.618] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
618 Background: Serotonin may have proliferative effects on neuroendocrine tumors (NETs). Inhibition of tryptophan hydroxylase (TPH), with resulting reduction of serotonin, may impact tumor size and growth (TG) in patients with NETs. We investigated the effects of TPH inhibitor telotristat ethyl (TE) on TG among patients receiving TE in clinical practice. Methods: A chart review study of 200 patients who had initiated TE was conducted. All patients had ≥2 radiological scans in the past 12 months prior to TE initiation and ≥1 scan post-TE initiation. Data were collected via a secure online portal. Descriptive statistics summarized physician and patient characteristics, and documented background NET treatment (i.e., somatostatin analog [SSA] and/or non-SSA). Longitudinal analyses of TG were assessed using a generalized linear regression model after controlling for documented background NET treatment and time since first scan. Results: Most physicians (71/114) were community-based oncologists. On average, patients were 61 ± 10 years old when initiating TE, 57% male, and 74% white; 61% had well-differentiated tumor with 61% of gastrointestinal origin. Patients received TE for an average of 12.0 ± 7.3 months and 82% (n = 163) were still receiving TE treatment at the time of data collection. The mean time from first scan to TE initiation was 5.6 ± 4.7 months and from TE initiation to last scan was 7.2 ± 6.3 months. Significant mean reductions in tumor size, after TE initiation, of 0.6 cm (p = 0.006) and TG of 8.5% (p = 0.045) were observed. Documented background NET treatment prior to initiating TE and time since first scan were not significant predictors of TG reduction. Results were consistent in a subset (n = 65) of patients who had no change in documented background NET treatment before and after initiating TE (mean reductions in tumor size 0.6 cm, p = 0.044 and TG 8.1%, p = 0.203). Conclusions: Treatment with TE may impact TG in patients with NETs. Prospective clinical studies are warranted to further examine the antiproliferative effects of TE.
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Affiliation(s)
| | - Eric Liu
- The Neuroendocrine Institute at Rocky Mountain Cancer Centers, Denver, CO
| | | | | | - Mu Cheng
- Analysis Group, Inc., Boston, MA
| | | | | | | | - David C. Metz
- University of Pennsylvania School of Medicine, Philadelphia, PA
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Savard MF, Wells JC, Graham J, Dudani S, Steinharter JA, McGregor BA, Donskov F, Bjarnason GA, Vaishampayan UN, Hansen AR, Iafolla MAJ, Zanotti G, Huynh L, Chang R, Duh MS, Heng DYC. Real-World Assessment of Clinical Outcomes Among First-Line Sunitinib Patients with Clear Cell Metastatic Renal Cell Carcinoma (mRCC) by the International mRCC Database Consortium Risk Group. Oncologist 2020; 25:422-430. [PMID: 31971318 DOI: 10.1634/theoncologist.2019-0605] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Accepted: 12/19/2019] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND International Metastatic Renal Cell Carcinoma (mRCC) Database Consortium (IMDC) risk groups are important when considering therapeutic options for first-line treatment. MATERIALS AND METHODS Adult patients with clear cell mRCC initiating first-line sunitinib between 2010 and 2018 were included in this retrospective database study. Median time to treatment discontinuation (TTD) and overall survival (OS) were estimated using Kaplan-Meier analysis. Outcomes were stratified by IMDC risk groups and evaluated for those in the combined intermediate and poor risk group and separately for those in the intermediate risk group with one versus two risk factors. RESULTS Among 1,769 patients treated with first-line sunitinib, 318 (18%) had favorable, 1,031 (58%) had intermediate, and 420 (24%) had poor IMDC risk. Across the three risk groups, patients had similar age, gender, and sunitinib initiation year. Median TTD was 15.0, 8.5, and 4.2 months in the favorable, intermediate, and poor risk groups, respectively, and 7.1 months in the combined intermediate and poor risk group. Median OS was 52.1, 31.5, and 9.8 months in the favorable, intermediate, and poor risk groups, respectively, and 23.2 months in the combined intermediate and poor risk group. Median OS (35.1 vs. 21.9 months) and TTD (10.3 vs. 6.6 months) were significantly different between intermediate risk patients with one versus two risk factors. CONCLUSION This real-world study found a median OS of 52 months for patients with favorable IMDC risk treated with first-line sunitinib, setting a new benchmark on clinical outcomes of clear cell mRCC. Analysis of intermediate risk group by one or two risk factors demonstrated distinct clinical outcomes. IMPLICATIONS FOR PRACTICE This analysis offers a contemporary benchmark for overall survival (median, 52.1 months; 95% confidence interval, 43.4-61.2) among patients with clear cell metastatic renal cell carcinoma who were treated with sunitinib as first-line therapy in a real-world setting and classified as favorable risk according to International Metastatic Renal Cell Carcinoma Database Consortium (IMDC) risk group classification. This study demonstrates that clinical outcomes differ between IMDC risk groups as well as within the intermediate risk group based on the number of risk factors, thus warranting further consideration of risk group when counseling patients about therapeutic options and designing clinical trials.
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Affiliation(s)
| | | | - Jeffrey Graham
- CancerCare Manitoba, University of Manitoba, Winnipeg, Canada
| | | | | | | | | | | | | | | | | | | | - Lynn Huynh
- Analysis Group, Inc., Boston, Massachusetts, USA
| | - Rose Chang
- Analysis Group, Inc., Boston, Massachusetts, USA
| | - Mei S Duh
- Analysis Group, Inc., Boston, Massachusetts, USA
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19
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Patel AK, Barghout V, Yenikomshian MA, Germain G, Jacques P, Laliberté F, Duh MS. Real-World Adherence in Patients with Metastatic Colorectal Cancer Treated with Trifluridine plus Tipiracil or Regorafenib. Oncologist 2020; 25:e75-e84. [PMID: 31591140 PMCID: PMC6964129 DOI: 10.1634/theoncologist.2019-0240] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Accepted: 07/31/2019] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Trifluridine and tipiracil (FTD + TPI) and regorafenib (REG) are approved treatments for the treatment of refractory metastatic colorectal cancer (mCRC). This study assesses adherence and duration of therapy with FTD + TPI versus REG and explores the effect of sequencing on adherence. MATERIALS AND METHODS Adults diagnosed with mCRC were identified in the IQVIA Real-World Data Adjudicated Claims: U.S. database (October 2014-July 2017). The observation period spanned from the index date (first dispensing of FTD + TPI or REG) to the earliest of a switch to another mCRC agent, the end of continuous enrollment, or the end of data availability. Medication possession ratio (MPR), proportion of days covered (PDC), and persistence and time to discontinuation (gap ≥45 days) were compared between FTD + TPI and REG users and among switchers (FTD + TPI-to-REG vs. REG-to-FTD + TPI). RESULTS A total of 469 FTD + TPI and 311 REG users were identified. FTD + TPI users had higher compliance with an MPR ≥80% (odds ratio [OR], 2.47; p < .001) and PDC ≥80% (OR, 2.77; p < .001). FTD + TPI users had better persistence (82.8% vs. 68.0%; p < .001) and lower risk of discontinuation (hazard ratio [HR], 0.76; p = .006). Among switchers (96 FTD + TPI-to-REG; 83 REG-to-FTD + TPI), those switching from FTD + TPI to REG were more likely to have an MPR ≥80% (OR, 2.91; p < .001) and PDC ≥80% (OR, 4.60; p < .001) compared with REG-to-FTD + TPI switchers while treated with these drugs. Additionally, FTD + TPI-to-REG switchers had a lower risk of first treatment discontinuation (HR, 0.66; p = .009). CONCLUSION FTD + TPI users had significantly higher adherence and persistence, and patients who were treated with FTD + TPI before switching to REG also had higher adherence and persistence outcomes. IMPLICATIONS FOR PRACTICE Trifluridine plus tipiracil (FTD + TPI) and regorafenib (REG) prolong survival in refractory metastatic colorectal cancer (mCRC) but have different tolerability profiles. This study assessed real-world adherence to treatment with FTD + TPI versus REG and compared outcomes among patients who switched from FTD + TPI to REG and vice versa. FTD + TPI was associated with significantly higher medication adherence and longer time to discontinuation than REG. Patients treated with FTD + TPI prior to switching to REG also showed higher adherence outcomes. Findings could help inform decision making regarding the choice and sequencing of treatment with FTD + TPI versus REG in patients with mCRC.
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Affiliation(s)
| | | | | | | | | | | | - Mei S. Duh
- Analysis Group, Inc.BostonMassachusettsUSA
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20
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Wells JC, Graham J, Beuselinck B, Bjarnason GA, Donskov F, Hansen AR, McKay RR, Vaishampayan U, De Velasco G, Duh MS, Huynh L, Nguyen C, Zanotti G, Ramaswamy K, Choueiri TK, Heng DYC. Clinical Outcomes of First-line Sunitinib Followed by Immuno-oncology Checkpoint Inhibitors in Patients With Metastatic Renal Cell Carcinoma. Clin Genitourin Cancer 2019; 18:e350-e359. [PMID: 31926879 DOI: 10.1016/j.clgc.2019.12.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 12/02/2019] [Accepted: 12/09/2019] [Indexed: 12/24/2022]
Abstract
BACKGROUND The present retrospective, longitudinal cohort study assessed the association between the first-line sunitinib treatment duration and clinical outcomes with second-line immuno-oncology (IO) therapy among patients with metastatic renal cell carcinoma (mRCC). PATIENTS AND METHODS A total of 161 patients with mRCC who had been treated with first-line sunitinib and subsequent IO therapy from select International mRCC Database Consortium centers were included. The overall survival, time to next therapy, time to treatment discontinuation, and real-world physician-assessed best response measured from IO therapy initiation were analyzed and compared between patients treated with first-line sunitinib for ≥ 6 months and those treated for < 6 months. RESULTS The 116 patients treated with sunitinib for ≥ 6 months tended to be older and to have a better International mRCC Database Consortium risk than the 45 patients treated for < 6 months (favorable, 36% vs. 8%, P = .001; intermediate, 59% vs. 70%, P = .21; poor, 5% vs. 22%, P = .007). The receipt of sunitinib for ≥ 6 months versus < 6 months was associated with longer survival (hazard ratio [HR], 0.42; 95% confidence interval [CI], 0.21-0.87; P = .02). No significant association was observed between the first-line sunitinib duration and second-line IO outcomes, including the time to next therapy (HR, 0.89; 95% CI, 0.52-1.51; P = .66), time to treatment discontinuation (HR, 0.85; 95% CI, 0.54-1.34; P = .49), and tumor response (odds ratio, 0.73; 95% CI, 0.22-2.49; P = .62). CONCLUSIONS We found no statistically significant association between the first-line sunitinib duration and clinical outcomes with second-line IO therapy. Patients receiving first-line sunitinib for ≥ 6 months compared with < 6 months was associated with better overall survival, although potential unadjusted confounders could have been present. These findings support the paradigm that previous therapy will not dictate the effectiveness of subsequent immunotherapy.
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Affiliation(s)
- J Connor Wells
- Department of Oncology, University of Calgary, Calgary, AB, Canada
| | - Jeffrey Graham
- Department of Oncology, CancerCare Manitoba, University of Manitoba, Winnipeg, MB, Canada
| | - Benoit Beuselinck
- Department of Oncology, University Hospital Leuven, Kathoieke Universiteit Leuven, Leuven, Belgium
| | - Georg A Bjarnason
- Department of Oncology, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
| | - Frede Donskov
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - Aaron R Hansen
- Department of Oncology, Princess Margaret Cancer Centre, Toronto, ON, Canada
| | - Rana R McKay
- Department of Oncology, University of California, San Diego, San Diego, CA
| | | | | | | | | | | | | | | | - Toni K Choueiri
- Department of Oncology, Dana-Farber Cancer Institute, Boston, MA
| | - Daniel Y C Heng
- Department of Oncology, University of Calgary, Calgary, AB, Canada.
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21
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Graham J, Shah AY, Wells JC, McKay RR, Vaishampayan U, Hansen A, Donskov F, Bjarnason GA, Beuselinck B, De Velasco G, Iafolla M, Duh MS, Huynh L, Chang R, Zanotti G, Ramaswamy K, Choueiri TK, Tannir NM, Heng DYC. Outcomes of Patients with Metastatic Renal Cell Carcinoma Treated with Targeted Therapy After Immuno-oncology Checkpoint Inhibitors. Eur Urol Oncol 2019; 4:102-111. [PMID: 31786162 DOI: 10.1016/j.euo.2019.11.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 10/20/2019] [Accepted: 11/09/2019] [Indexed: 12/24/2022]
Abstract
BACKGROUND Immuno-oncology (IO) therapies have changed the treatment standards of metastatic renal cell carcinoma (mRCC). However, the effectiveness of targeted therapy following discontinuation of IO therapy in real-world settings has not been well studied. OBJECTIVE To describe treatment sequence and assess clinical effectiveness of targeted therapy for mRCC patients who received prior IO therapy. DESIGN, SETTING, AND PARTICIPANTS A retrospective, longitudinal cohort study using data from eight international cancer centers was conducted. Patients with mRCC were ≥18yr old, received IO therapy in any line, and initiated targeted therapy following IO therapy discontinuation. INTERVENTION Patients were treated with vascular endothelial growth factor receptor tyrosine kinase inhibitors (VEGFR-TKIs) or mammalian target of rapamycin inhibitors (mTORIs). OUTCOME MEASUREMENTS AND STATISTICAL ANALYSIS Outcomes were time to treatment discontinuation (TTD), overall survival (OS), and objective response rate (ORR). Crude and adjusted hazard ratios (aHRs) with 95% confidence intervals (CIs) were estimated using Cox proportional hazard models. Models were adjusted for age, sex, therapy line, and International Metastatic RCC Database Consortium risk group. RESULTS AND LIMITATIONS Among 314 patients, 276 (87.9%) and 38 (12.1%) were treated with VEGFR-TKI and mTORI therapy, respectively. The most common tyrosine kinase inhibitor treatments were axitinib, cabozantinib, and sunitinib following IO therapy. In adjusted models, patients treated with VEGFR-TKI versus mTORI therapy had lower hazard of TTD after IO treatment (aHR=0.46; 95% CI: 0.30-0.71; p < 0.01). One-year OS probability (65% vs 47%, p < 0.01) and proportion of ORR (29.8% vs 3.6%, p < 0.01) were significantly greater for patients treated with VEGFR-TKIs versus those treated with mTORIs. CONCLUSIONS Targeted therapy has clinical activity following IO treatment. Patients who received VEGFR-TKIs versus mTORIs following IO therapy had improved clinical outcomes. These findings may help inform treatment guidelines and clinical practice for patients post-IO therapy. PATIENT SUMMARY Patients may continue to experience clinical benefits from targeted therapies after progression on immuno-oncology treatment.
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Affiliation(s)
- Jeffrey Graham
- CancerCare Manitoba, University of Manitoba, Winnipeg, Canada
| | | | | | - Rana R McKay
- University of California San Diego, San Diego, CA, USA
| | | | - Aaron Hansen
- Princess Margaret Cancer Centre, Toronto, Canada
| | | | | | | | | | | | - Mei S Duh
- Analysis Group, Inc., Boston, MA, USA
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Bobbili P, Ryan K, Duh MS, Dua A, Fernandes AW, Pavilack M, Gomez JE. Treatment patterns and overall survival among patients with unresectable, stage III non-small-cell lung cancer. Future Oncol 2019; 15:3381-3393. [PMID: 31544510 DOI: 10.2217/fon-2019-0282] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Aim: To analyze treatment patterns and overall survival (OS) across time (2009-2014) among patients with unresected, stage III non-small-cell lung cancer (NSCLC). Patients & methods: Stage III NSCLC patients aged ≥65 years who initiated therapy were identified using SEER-Medicare data. Results: Among 4564 patients, 84% received chemotherapy (with or without radiotherapy), and 59% received chemoradiotherapy (CRT). Carboplatin + paclitaxel was the most frequent regimen. Median (interquartile range) OS among chemotherapy patients was 13.2 (6.0-28.9) months, and 14.8 (6.7-33.4) months among CRT patients. Among CRT patients, there was no difference in OS across years of CRT initiation. Conclusion: OS remained static across 2009-2014, indicating stagnancy in clinical outcomes for stage III NSCLC patients and a need for more effective therapeutic options.
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Affiliation(s)
| | - Kellie Ryan
- US Medical Affairs, AstraZeneca, Gaithersburg, MD 20878, USA
| | - Mei S Duh
- Analysis Group, Inc., Boston, MA 02199, USA
| | | | | | | | - Jorge E Gomez
- Icahn School of Medicine at Mt Sinai, New York, NY 10029, USA
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Halperin DM, Huynh L, Beaumont JL, Cai B, Bhak RH, Narkhede S, Totev T, Duh MS, Neary MP, Cella D. Assessment of change in quality of life, carcinoid syndrome symptoms and healthcare resource utilization in patients with carcinoid syndrome. BMC Cancer 2019; 19:274. [PMID: 30922252 PMCID: PMC6437890 DOI: 10.1186/s12885-019-5459-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Accepted: 03/12/2019] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND There is limited information on changes over time in carcinoid syndrome (CS) symptoms and quality of life (QoL). This study assessed change in CS symptoms and QoL in patients treated with somatostatin analogs (SSAs) using the Functional Assessment of Cancer Therapy-General (FACT-G) and Patient-Reported Outcomes Measurement Information System (PROMIS)-29 instruments. METHODS Patients ≥18 years old with CS symptoms and treated with SSA or non-SSA agents in the United States were recruited through a patient advocacy group to complete a two-part, anonymous online survey. Time point (T) 1 survey was fielded from July-October 2016, and T2 survey followed 6 months later. Clinical characteristics and SSA treatment duration were assessed at T1. FACT-G and PROMIS-29 QoL surveys were administered and CS symptoms were assessed at T1 and T2; proportions of patients not experiencing symptoms were compared by McNemar's test. Healthcare resource utilization (HRU) was assessed for the T1-T2 interval, and mean difference in QoL score from T1 to T2 by SSA duration was calculated. RESULTS Of 117 participants at T1, 89 (76%) completed the T2 survey and served as the study sample; 11 (13%) were treated with SSAs for > 0-2 years, 37 (42%) for > 2-5 years, and 39 (45%) for > 5 years. A higher proportion of patients at T2 vs. T1 reported the following symptoms as not applicable: diarrhea (16% vs. 7%, p < 0.05), flushing (28% vs. 18%, p < 0.05), wheezing (78% vs 66%, p = 0.008). Most patients (89%) had a physical exam and a mean of 7.2 healthcare provider visits between T1 and T2. Patients treated with SSAs for ≤2 years had a mean positive change of 3.7 in their FACT-G total score between surveys, and 6.0 in an additional set of CS-specific questions. Patients receiving SSAs for > 2 years did not appear to associate with a clinically meaningful improvement in QoL score as assessed by FACT-G between T1 and T2; patients also had no clinically meaningful improvement as assessed by PROMIS-29. CONCLUSIONS There may be clinically important improvement in QoL as measured by FACT-G in patients in earlier years of receiving SSA, which may not appear in later years of SSA treatment.
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Affiliation(s)
- Daniel M Halperin
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd., Houston, TX, 77030, USA
| | - Lynn Huynh
- Analysis Group, Inc., 111 Huntington Ave. 14th Floor, Boston, MA, 02199, USA.
| | - Jennifer L Beaumont
- Terasaki Research Institute, 1018 Westwood Blvd., Los Angeles, CA, 90024, USA.,Department of Medical Social Sciences, Northwestern University Feinberg School of Medicine, 633 North Saint Clair St.19th Floor, Chicago, IL, 60611, USA
| | - Beilei Cai
- Novartis Pharmaceuticals Corporation, One Health Plaza, 345/5120C, East Hanover, NJ, 07936-1080, USA
| | - Rachel H Bhak
- Analysis Group, Inc., 111 Huntington Ave. 14th Floor, Boston, MA, 02199, USA
| | - Sahil Narkhede
- Analysis Group, Inc., 111 Huntington Ave. 14th Floor, Boston, MA, 02199, USA
| | - Todor Totev
- Analysis Group, Inc., 111 Huntington Ave. 14th Floor, Boston, MA, 02199, USA
| | - Mei S Duh
- Analysis Group, Inc., 111 Huntington Ave. 14th Floor, Boston, MA, 02199, USA
| | - Maureen P Neary
- Novartis Pharmaceuticals Corporation, One Health Plaza, 345/5120C, East Hanover, NJ, 07936-1080, USA
| | - David Cella
- Department of Medical Social Sciences, Northwestern University Feinberg School of Medicine, 633 North Saint Clair St.19th Floor, Chicago, IL, 60611, USA
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Halperin DM, Huynh L, Beaumont JL, Cai B, Totev T, Bhak RH, Duh MS, Neary MP, Cella D. Impact of carcinoid syndrome symptoms and long-term use of somatostatin analogs on quality of life in patients with carcinoid syndrome: A survey study. Medicine (Baltimore) 2018; 97:e13390. [PMID: 30461659 PMCID: PMC6392719 DOI: 10.1097/md.0000000000013390] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
To evaluate association of carcinoid syndrome (CS) symptom burden and somatostatin analog (SSA) duration with quality of life (QoL) using Functional Assessment of Cancer Therapy-General (FACT-G) and Patient-Reported Outcomes Measurement Information System (PROMIS-29) instruments.Adults who received treatment for CS symptoms in the US were recruited to participate in a cross-sectional online survey (July-October, 2016). Demographic, clinical, and QoL questions (FACT-G, 29 CS-related supplemental questions, PROMIS-29) were included. Descriptive and multivariable regression analyses adjusting for demographic and clinical characteristics followed.Most (98%) of the 117 patients received SSAs in the prior month. Multivariable regression analysis showed ≥4 bowel movements/day (vs <4) and each additional CS symptom was associated with 7.1 (P = .043) and 3.4 (P = .034) point FACT-G total score decreases, respectively. Requiring bed rest (vs normal activity) was associated with significant decreases in FACT-G total score (P < .001). There were similar associations for FACT-G subscales, supplemental questions, and PROMIS-29. After adjustment, FACT-G total score was significantly higher (11.3 points; P = .033) for patients treated with SSA >8 years versus <2.7 years.CS symptom burden was observed to be associated with lower QoL scores, measured by FACT-G. Patients with >8 years SSA treatment duration versus <2.7 years had higher QoL.
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Affiliation(s)
- Daniel M. Halperin
- Department of Gastrointestinal Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, TX
| | | | - Jennifer L. Beaumont
- Department of Medical Social Sciences, Northwestern University Feinberg School of Medicine, Chicago, IL
- Terasaki Research Institute, Los Angeles, CA
| | - Beilei Cai
- Novartis Pharmaceuticals Corporation, East Hanover, NJ
| | | | | | | | | | - David Cella
- Department of Medical Social Sciences, Northwestern University Feinberg School of Medicine, Chicago, IL
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Huynh L, Totev T, Vekeman F, Neary MP, Duh MS, Benson AB. Cost reduction from resolution/improvement of carcinoid syndrome symptoms following treatment with above-standard dose of octreotide LAR. J Med Econ 2017; 20:945-951. [PMID: 28562131 DOI: 10.1080/13696998.2017.1337019] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
AIMS To calculate the cost reduction associated with diarrhea/flushing symptom resolution/improvement following treatment with above-standard dose octreotide-LAR from the commercial payor's perspective. MATERIALS AND METHODS Diarrhea and flushing are two major carcinoid syndrome symptoms of neuroendocrine tumor (NET). Previously, a study of NET patients from three US tertiary oncology centers (NET 3-Center Study) demonstrated that dose escalation of octreotide LAR to above-standard dose resolved/improved diarrhea/flushing in 79% of the patients within 1 year. Time course of diarrhea/flushing symptom data were collected from the NET 3-Center Study. Daily healthcare costs were calculated from a commercial claims database analysis. For the patient cohort experiencing any diarrhea/flushing symptom resolution/improvement, their observation period was divided into days of symptom resolution/improvement or no improvement, which were then multiplied by the respective daily healthcare cost and summed over 1 year to yield the blended mean annual cost per patient. For patients who experienced no diarrhea/flushing symptom improvement, mean annual daily healthcare cost of diarrhea/flushing over a 1-year period was calculated. RESULTS The economic model found that 108 NET patients who experienced diarrhea/flushing symptom resolution/improvement within 1 year had statistically significantly lower mean annual healthcare cost/patient than patients with no symptom improvement, by $14,766 (p = .03). For the sub-set of 85 patients experiencing resolution/improvement of diarrhea, their cost reduction was more pronounced, at $18,740 (p = .01), statistically significantly lower than those with no improvement; outpatient costs accounted for 56% of the cost reduction (p = .02); inpatient costs, emergency department costs, and pharmacy costs accounted for the remaining 44%. LIMITATIONS The economic model relied on two different sources of data, with some heterogeneity in the prior treatment and disease status of patients. CONCLUSIONS Symptom resolution/improvement of diarrhea/flushing after treatment with an above-standard dose of octreotide-LAR in NET was associated with a statistically significant healthcare cost decrease compared to a scenario of no symptom improvement.
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Affiliation(s)
- Lynn Huynh
- a Analysis Group, Inc. , Boston , MA , USA
| | | | | | - Maureen P Neary
- b Novartis Pharmaceuticals Corporation , East Hanover , NJ , USA
| | - Mei S Duh
- a Analysis Group, Inc. , Boston , MA , USA
| | - Al B Benson
- c Robert H. Lurie Comprehensive Cancer Center of Northwestern University , Chicago , IL , USA
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Krishnarajah G, Kageleiry A, Korves C, Lefebvre P, Duh MS. Public health impact of Rotarix vaccination among commercially insured children in the United States. Vaccine 2017; 35:5065-5072. [DOI: 10.1016/j.vaccine.2017.06.034] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Revised: 05/25/2017] [Accepted: 06/10/2017] [Indexed: 02/01/2023]
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Vekeman F, LaMori JC, Laliberté F, Nutescu E, Duh MS, Bookhart BK, Schein J, Dea K, Olson WH, Lefebvre P. In-hospital risk of venous thromboembolism and bleeding and associated costs for patients undergoing total hip or knee arthroplasty. J Med Econ 2012; 15:644-53. [PMID: 22356512 DOI: 10.3111/13696998.2012.669438] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
OBJECTIVE Benefits of anti-coagulation for venous thromboembolism (VTE) prevention in total hip and knee arthroplasty (THA/TKA) may be offset by increased risk of bleeding. The aim was to assess in-hospital risk of VTE and bleeding after THA/TKA and quantify any increased costs. METHODS Healthcare claims from the Premier Perspective(TM) Comparative Hospital Database (January 2000-September 2008) were selected for subjects ≥ 18 years with ≥ 1 diagnosis code for THA/TKA. VTE was defined as ≥ 1 code for deep vein thrombosis or pulmonary embolism. Bleeding was classified as major/non-major. Incremental in-hospital costs associated with VTE and bleeding were calculated as cost differences between inpatients with VTE or bleeding matched 1:1 with inpatients without VTE or bleeding. RESULTS A total of 820,197 inpatient stays were identified: 8042 had a VTE event and 7401 a bleeding event (2740 major bleeding). The risks of VTE, any bleeding, and major bleeding were 0.98, 0.90, and 0.33/100 inpatient stays, respectively. Mean incremental in-hospital costs per inpatient were $2663 for VTE, $2028 for bleeding, and $3198 for major bleeding. LIMITATIONS These included possible inaccuracies or omissions in procedures, diagnoses, or costs of claims data; no information on the amount of blood transfused or decreases in the hemoglobin level to evaluate bleeding event severity; and potential biases due to the observational design of the study. CONCLUSIONS In-hospital risk and incremental all-cause costs with THA/TKA were higher for VTE than for bleeding. Despite higher costs, major bleeding occurred less frequently than VTE, suggesting a favorable benefit/risk profile for VTE prophylaxis in THA/TKA.
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Affiliation(s)
- F Vekeman
- Groupe d’analyse, Ltée, Montréal, Québec, Canada
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Sethi NK, Torgovnick J, Sethi PK, Arsura E, Emmanuel Paradis P, Duh MS, Durkin MB, Wan GJ. The risks and costs of multiple-generic substitution of topiramate. Neurology 2010; 74:701-2; author reply 701-2. [PMID: 20177127 DOI: 10.1212/wnl.0b013e3181c7770b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Mody‐Patel N, Vekeman F, Laliberté F, Kahler KH, Duh MS, Lefebvre P. P2‐227: Compliance, persistence, and outcomes in patients with Alzheimer's disease treated with oral cholinesterase inhibitors. Alzheimers Dement 2009. [DOI: 10.1016/j.jalz.2009.04.540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Abstract
OBJECTIVES The primary objective was to investigate whether nonadherence to antiepileptic drugs (AEDs) is associated with increased mortality and the secondary objective to examine whether nonadherence increases the risk of serious clinical events, including emergency department (ED) visits, hospitalizations, motor vehicle accident (MVA) injuries, fractures, and head injuries. METHODS A retrospective open-cohort design was employed using Medicaid claims data from Florida, Iowa, and New Jersey from January 1997 through June 2006. Patients aged > or =18 years with > or =1 diagnosis of epilepsy by a neurologist and > or =2 AED pharmacy dispensings were selected. Medication possession ratio (MPR) was used to evaluate AED adherence on a quarterly basis with MPR > or =0.80 considered adherent and <0.80 nonadherent. The association of nonadherence with mortality was assessed using a time-varying Cox regression model adjusting for demographic and clinical confounders. Incidence rates for serious clinical events were compared between adherent and nonadherent quarters using incidence rate ratios (IRRs) with 95% CIs calculated based on the Poisson distribution. RESULTS The 33,658 study patients contributed 388,564 AED-treated quarters (26% nonadherent). Nonadherence was associated with an over threefold increased risk of mortality compared to adherence (hazard ratio = 3.32, 95% CI = 3.11-3.54) after multivariate adjustments. Time periods of nonadherence were also associated with a significantly higher incidence of ED visits (IRR = 1.50, 95% CI = 1.49-1.52), hospital admissions (IRR = 1.86, 95% CI = 1.84-1.88), MVA injuries (IRR = 2.08, 95% CI = 1.81-2.39), and fractures (IRR = 1.21, 95% CI = 1.18-1.23) than periods of adherence. CONCLUSION These findings suggest that nonadherence to antiepileptic drugs can have serious or fatal consequences for patients with epilepsy.
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Affiliation(s)
- E Faught
- UAB Epilepsy Center, Civitan International Research Center 312, 1719 6th Avenue South, Birmingham, AL 35294, USA.
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Vekeman F, Lefebvre P, Mody SH, Raut M, McKenzie RS, Watson S, Duh MS. DOSING AND TRANSFUSION PATTERNS OF ERYTHROPOIETIC STIMULATING THERAPIES IN CRITICALLY ILL PATIENTS. Crit Care Med 2006. [DOI: 10.1097/00003246-200612002-00440] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Zilberbeg MD, Lefebvre P, Carter C, Raut M, Vekeman F, Duh MS, Schorr AF. TRANSFUSING AT LOWER HEMOGLOBIN TRIGGERS: A MODEL-BASED ESTIMATE OF TRANSFUSION RISK AND UTILIZATION IN UNITED STATES INTENSIVE CARE UNITS. Chest 2006. [DOI: 10.1378/chest.130.4_meetingabstracts.203s-c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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Ben-Hamadi R, Duh MS, Aggarwal J, Henckler A, McKenzie RS, Tak Piech C. The cost-effectiveness of weekly epoetin alfa relative to weekly darbepoetin alfa in patients with chemotherapy-induced anemia. Curr Med Res Opin 2005; 21:1677-82. [PMID: 16238908 DOI: 10.1185/030079905x65501] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
OBJECTIVE To compare the cost-effectiveness of epoetin alfa (EPO) and darbepoetin alfa (DARB) for the treatment of chemotherapy-induced anemia (CIA), using dosing regimens approved by the FDA (EPO 40,000 U once weekly and DARB 2.25 U once weekly and DARB 2.25 mcg/kg once weekly). METHODS The study compared published results of two double-blind, randomized, phase III trials one utilizing EPO (N = 166) and the other, DARB (N = 367). Patients in both trials similar baseline characteristics. Effectiveness was measured as the proportion of EPO or DARB patients who were successfully treated (i.e., did not require blood transfusion) during weeks 0-16 and 5-16, respectively. Estimated drug costs were presented in 2005 USD based on wholesale acquisition cost (WAC) and average drug utilization over 16 weeks. Cost-effectiveness was calculated as the estimated drug costs divided by transfusion effectiveness. Threshold analysis was used to determine the break-even point at which EPO and DARB had the same drug costs. RESULTS Estimated drug costs over 16 weeks were $9,039 for EPO and $13,555 for DARB. During weeks 5-16, 85% of EPO patients and 73% of DARB patients were successfully treated, resulting in average cost-effectiveness ratios of $106 for EPO and $186 for DARB per one per cent of successfully treated patients. A 33% reduction in DARB WAC was required to achieve the same drug costs as for EPO. CONCLUSIONS Utilizing FDA-approved doses, EPO was found to result in lower drug costs and better treatment success when compared to DARB. Hence, EPO is a dominant alternative compared to DARB for the treatment of CIA. The analyses presented here are not without limitations. Specifically, although the studies were comparable, patients were ultimately drawn from different populations.
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Duh MS, Walker AM, Lindmark B, Laties AM. Association between intraocular pressure and budesonide inhalation therapy in asthmatic patients. Ann Allergy Asthma Immunol 2000; 85:356-61. [PMID: 11101175 DOI: 10.1016/s1081-1206(10)62545-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
BACKGROUND The extent to which inhaled glucocorticoids increase the risk of intraocular pressure elevation has been controversial. OBJECTIVE The authors attempt to assess such risk attributable to budesonide, an inhaled glucocorticoid for asthma therapy. METHODS Data were pooled from four prospective, randomized, double-blind, parallel-group, placebo-controlled, multicenter clinical trials of 12 to 20 weeks in duration. One thousand two hundred and fifty-five patients, 6 to 70 years of age whose intraocular pressures (IOPs) were less than 23 mmHg at screening were randomized to receive placebo or inhaled budesonide at doses ranging from 100 to 800 microg, administered twice daily. Intraocular pressure was measured at screening and at the end of double-blind treatment. Intraocular change was compared between budesonide and placebo, accounting for the confounding effects of gender, race, age, history of diabetes, history of hypertension, clinical trial, systemic glucocorticoid use during the trials, ophthalmic glucocorticoid use during the trials, and prior oral glucocorticoid use. RESULTS No budesonide treatment effect on the IOP was evident either in the crude analysis or after adjustment for possible confounding factors. For patients exposed to budesonide at a total daily dose of 1600 microg for 20 weeks, there was no difference in IOP change compared with the placebo controls. CONCLUSIONS No association with an increased IOP was observed in asthmatic patients treated with budesonide at daily doses ranging from 200 to 1600 microg for durations of 12 to 20 weeks. The subgroup analysis, which focused on the highest dose and longer term therapy was reassuring, as was the overall result.
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Affiliation(s)
- M S Duh
- Product Safety and Surveillance, Astra Pharmaceuticals, LP, Westborough, Massachusettes, USA
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Abstract
OBJECTIVES This study quantifies the incidence of liver enzyme abnormalities in the general population of central Massachusetts. METHODS Computerized data files from a health maintenance organization were used to ascertain potential subjects during the study period of 1 July 1992-30 June 1993. Medical records and laboratory tests results were reviewed to confirm the diagnoses. RESULTS The incidence rates were 40.6 cases per 100,000 persons per year for drug-associated liver enzyme abnormalities, 39.0 per 100,000 persons per year for liver enzyme abnormalities secondary to biliary pathologies, 25.2 per 100,000 persons per year for liver enzyme abnormalities secondary to mononucleosis, 25.2 per 100,000 persons per year for liver enzyme abnormalities of unknown aetiology, 15.4 per 100,000 persons per year for alcoholic liver enzyme abnormalities, 12.2 per 100,000 persons per year for liver malignancy, and 7.3 per 100,000 persons per year for viral hepatitis (HAV, HBV and HCV). Men were more commonly affected by alcoholic liver enzyme abnormalities and viral hepatitis, with respective incidence rates approximately 5 and 2 times higher than women. Liver enzyme abnormalities secondary to mononucleosis occurred predominantly between the ages of 15-24 years. In contrast, liver diseases secondary to biliary pathologies, liver malignancies and drug-associated liver enzyme abnormalities were found most frequently among the elderly. CONCLUSION Liver enzyme abnormalities occurred with a higher incidence in this general population than reported previously in selected patients. Drug-associated liver enzyme abnormality was the most common type. The magnitude of drug-associated liver enzyme abnormality could be much higher as an appreciable proportion of the liver cases of unknown aetiology are potentially drug-attributable.
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Affiliation(s)
- M S Duh
- Department of Epidemiology, Harvard School of Public Health, 677 Huntington Avenue, Boston, MA 02115, USA.
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Abstract
Multilayer neural networks have been faulted for functioning as "black boxes" and for failing to assess the relative importance of the input factors. The aim of this paper is to illustrate how neural networks can classify individuals. The authors investigated the role of weights in the formation of neural networks' decision surfaces and decision regions. The data used were from a case-control study. Two strong determinants of case status were used as input "neurons." Zero, three, and five hidden neurons were used to explore the effect of the number of hidden neurons on the decision surfaces and regions. Mapping of input and output spaces revealed that three hidden neurons were insufficient to fully discriminate cases from controls. Five hidden neurons may be optimal, but at the cost of possible over-fitting. The more complex neural networks were very effective at defining regions of uniform risk in the plane of the initial covariates, and at assigning risk levels. The authors speculate that neural networks will prove useful in epidemiologic problems that require pattern recognition or complicated classification techniques, and that they will be unfavorable in problems that involve distinct effects of distinguishable predictors.
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Affiliation(s)
- M S Duh
- Department of Epidemiology, Harvard School of Public Health, Boston, MA 02115, USA
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Duh MS, Walker AM, Pagano M, Kronlund K. Prediction and cross-validation of neural networks versus logistic regression: using hepatic disorders as an example. Am J Epidemiol 1998; 147:407-13. [PMID: 9508109 DOI: 10.1093/oxfordjournals.aje.a009464] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The authors developed and cross-validated prediction models for newly diagnosed cases of liver disorders by using logistic regression and neural networks. Computerized files of health care encounters from the Fallon Community Health Plan were used to identify 1,674 subjects who had had liver-related health services between July 1, 1992, and June 30, 1993. A total of 219 subjects were confirmed by review of medical records as incident cases. The 1,674 subjects were randomly and evenly divided into training and test sets. The training set was used to derive prediction algorithms based solely on the automated data; the test set was used for cross-validation. The area under the Receiver Operating Characteristic curve for a neural network model was significantly larger than that for logistic regression in the training set (p = 0.04). However, the performance was statistically equivalent in the test set (p = 0.45). Despite its superior performance in the training set, the generalizability of the neural network model is limited. Logistic regression may therefore be preferred over neural network on the basis of its established advantages. More generalizable modeling techniques for neural networks may be necessary before they are practical for medical research.
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Affiliation(s)
- M S Duh
- Department of Epidemiology, Harvard School of Public Health, Boston, MA 02115, USA
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Duh MS, Shepard MJ, Wilberger JE, Bracken MB. The effectiveness of surgery on the treatment of acute spinal cord injury and its relation to pharmacological treatment. Neurosurgery 1994; 35:240-8; discussion 248-9. [PMID: 7969831 DOI: 10.1227/00006123-199408000-00009] [Citation(s) in RCA: 96] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Using data from the Second National Acute Spinal Cord Injury Study (NASCIS II), the authors sought to characterize the role of surgery in the management of traumatic spinal cord injury and to examine the interaction between pharmacological treatment and surgery. Patients who did not undergo surgery had more severe spinal cord injuries initially than those who had surgery. However, no differences in neurological improvement at 1-year follow-up were found between those who underwent surgery and those who did not. The results suggest that either early surgery (< or = 25 hours after injury) or late surgery (> 200 hours) may be associated with increased neurological recovery, particularly motor function, but these results are equivocal. Surgery was not shown to interact with pharmacological treatments, indicating that the effect of drug treatment in NASCIS II, reported elsewhere, is not influenced by surgery. Other independent variables that best predicted improvement in motor score were age of 25 years or younger, incomplete injury, and lower baseline emergency department neurological scores. This study does not provide clinically relevant evidence concerning the efficacy of timing or the value of surgery in treating patients with spinal cord injuries. A randomized study on the timing and efficacy of spinal cord surgery is needed to obtain valid comparisons of the efficacy of surgical treatments.
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Affiliation(s)
- M S Duh
- Department of Epidemiology and Public Health, Yale University Medical School, New Haven, Connecticut
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