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Naji L, Dennis B, Rodrigues M, Bawor M, Hillmer A, Chawar C, Deck E, Worster A, Paul J, Thabane L, Samaan Z. Assessing fragility of statistically significant findings from randomized controlled trials assessing pharmacological therapies for opioid use disorders: a systematic review. Trials 2024; 25:286. [PMID: 38678289 PMCID: PMC11055220 DOI: 10.1186/s13063-024-08104-x] [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] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Accepted: 04/10/2024] [Indexed: 04/29/2024] Open
Abstract
BACKGROUND The fragility index is a statistical measure of the robustness or "stability" of a statistically significant result. It has been adapted to assess the robustness of statistically significant outcomes from randomized controlled trials. By hypothetically switching some non-responders to responders, for instance, this metric measures how many individuals would need to have responded for a statistically significant finding to become non-statistically significant. The purpose of this study is to assess the fragility index of randomized controlled trials evaluating opioid substitution and antagonist therapies for opioid use disorder. This will provide an indication as to the robustness of trials in the field and the confidence that should be placed in the trials' outcomes, potentially identifying ways to improve clinical research in the field. This is especially important as opioid use disorder has become a global epidemic, and the incidence of opioid related fatalities have climbed 500% in the past two decades. METHODS Six databases were searched from inception to September 25, 2021, for randomized controlled trials evaluating opioid substitution and antagonist therapies for opioid use disorder, and meeting the necessary requirements for fragility index calculation. Specifically, we included all parallel arm or two-by-two factorial design RCTs that assessed the effectiveness of any opioid substitution and antagonist therapies using a binary primary outcome and reported a statistically significant result. The fragility index of each study was calculated using methods described by Walsh and colleagues. The risk of bias of included studies was assessed using the Revised Cochrane Risk of Bias tool for randomized trials. RESULTS Ten studies with a median sample size of 82.5 (interquartile range (IQR) 58, 179, range 52-226) were eligible for inclusion. Overall risk of bias was deemed to be low in seven studies, have some concerns in two studies, and be high in one study. The median fragility index was 7.5 (IQR 4, 12, range 1-26). CONCLUSIONS Our results suggest that approximately eight participants are needed to overturn the conclusions of the majority of trials in opioid use disorder. Future work should focus on maximizing transparency in reporting of study results, by reporting confidence intervals, fragility indexes, and emphasizing the clinical relevance of findings. TRIAL REGISTRATION PROSPERO CRD42013006507. Registered on November 25, 2013.
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Affiliation(s)
- Leen Naji
- Department of Family Medicine, David Braley Health Sciences Centre, McMaster University, 100 Main St W, 3rdFloor, Hamilton, ON, L8P 1H6, Canada.
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada.
- Department of Medicine, Montefiore Medical Center, New York, NY, USA.
| | - Brittany Dennis
- Department of Medicine, McMaster University, Hamilton, ON, Canada
- Department of Medicine, University of British Columbia, Vancouver, Canada
| | - Myanca Rodrigues
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada
| | - Monica Bawor
- Department of Medicine, Imperial College Healthcare NHS Trust, London, UK
| | - Alannah Hillmer
- Department of Psychiatry and Behavaioral Neurosciences, McMaster University, Hamilton, ON, Canada
| | - Caroul Chawar
- Physician Assistant Program, University of Toronto, Toronto, ON, Canada
| | - Eve Deck
- Department of Family Medicine, Western University, London, ON, Canada
| | - Andrew Worster
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada
- Department of Medicine, McMaster University, Hamilton, ON, Canada
| | - James Paul
- Department of Anesthesia, McMaster University, Hamilton, ON, Canada
| | - Lehana Thabane
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada
- Biostatistics Unit, Research Institute at St Joseph's Healthcare, Hamilton, ON, Canada
| | - Zainab Samaan
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada
- Department of Psychiatry and Behavioral Neurosciences, McMaster University, Hamilton, ON, Canada
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Hillmer A, Chawar C, Lamri A, Hudson J, Kapczinski F, Minuzzi L, Marsh DC, Thabane L, Paterson AD, Samaan Z. Genetics of cannabis use in opioid use disorder: A genome-wide association and polygenic risk score study. PLoS One 2023; 18:e0289059. [PMID: 37494403 PMCID: PMC10370765 DOI: 10.1371/journal.pone.0289059] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 07/10/2023] [Indexed: 07/28/2023] Open
Abstract
BACKGROUND Individuals with an Opioid Use Disorder (OUD) have increased rates of cannabis use in comparison to the general population. Research on the short- and long-term impacts of cannabis use in OUD patients has been inconclusive. A genetic component may contribute to cannabis cravings. AIMS Identify genetic variants associated with cannabis use through Genome-wide Association Study (GWAS) methods and investigate a Polygenic Risk Score (PRS). In addition, we aim to identify any sex differences in effect size for genetic variants reaching or nearing genome-wide significance in the GWAS. METHODS The study outcomes of interest were: regular cannabis use (yes/no) (n = 2616), heaviness of cannabis use (n = 1293) and cannabis cravings (n = 836). Logistic and linear regressions were preformed, respectively, to test the association between genetic variants and each outcome, regular cannabis use and heaviness of cannabis use. GWAS summary statistics from a recent large meta-GWAS investigating cannabis use disorder were used to conduct PRS's. Findings are limited to a European ancestry sample. RESULTS No genome-wide significant associations were found. Rs1813412 (chromosome 17) for regular cannabis use and rs62378502 (chromosome 5) for heaviness of cannabis use were approaching genome-wide significance. Both these SNPs were nominally significant (p<0.05) within males and females, however sex did not modify the association. The PRS identified statistically significant association with cannabis cravings. The variance explained by all PRSs were less than 1.02x10-2. CONCLUSION This study provides promising results in understanding the genetic contribution to cannabis use in individuals living with OUD.
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Affiliation(s)
- Alannah Hillmer
- Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, ON, Canada
| | - Caroul Chawar
- Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, ON, Canada
| | - Amel Lamri
- Department of Medicine, McMaster University, Hamilton, ON, Canada
| | - Jacqueline Hudson
- Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, ON, Canada
| | - Flavio Kapczinski
- McMaster University, Hamilton, ON, Canada
- Universidade Federal do Rio Grande do Sol, Porto Alegre, Brazil
| | - Luciano Minuzzi
- Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, ON, Canada
| | | | - Lehana Thabane
- Department of Health Research Method, Evidence & Impact, Hamilton, ON, Canada
| | - Andrew D Paterson
- Program in Genetics and Genome Biology, The Hospital for Sick Children, Divisions of Biostatistics and Epidemiology, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
| | - Zainab Samaan
- Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, ON, Canada
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Arolt C, Dugan M, Wild R, Richartz V, Holz B, Scheel A, Brägelmann J, Merkelbach-Bruse S, Wolf J, Büttner R, Lafleur F, Scheffler M, Catanzariti L, Hillmer A. EP08.02-031 NRF2 Pathway Signature Predicts KEAP1/NFE2L2 Mutations and Reveals Alternative Pathway-Activating Mutations in NSCLC. J Thorac Oncol 2022. [DOI: 10.1016/j.jtho.2022.07.713] [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: 10/14/2022]
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Kron A, Scheffler M, Ihle M, Michels S, Süptitz J, Prang D, Jakobs F, Nogova L, Fischer R, Eisert A, Riedel R, Kron F, Hillmer A, Loges S, Merkelbach-Bruse S, Büttner R, Wolf J. 991P EGFR exon 20 insertions in non-small cell lung cancer (NSCLC): Impact of TP53 mutation status and value of immune checkpoint blockade (ICB). Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1118] [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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Naji L, Rosic T, Sanger N, Dennis B, Hillmer A, Hudson J, Worster A, Paul J, Marsh DC, Thabane L, Samaan Z. Cannabis use and opioid relapse: An exploratory survival analysis of prospectively collected data. Front Psychiatry 2022; 13:1046649. [PMID: 36465312 PMCID: PMC9708870 DOI: 10.3389/fpsyt.2022.1046649] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 09/16/2022] [Accepted: 10/31/2022] [Indexed: 11/17/2022] Open
Abstract
IMPORTANCE It is known that only minority of patients with opioid use disorder (OUD) receive treatment, of which only a fraction successfully complete treatment as intended. Factors associated with poor treatment outcomes remain unclear, and there is emerging but conflicting evidence that cannabis use may mitigate opioid use. OBJECTIVE To analyze predictors of relapse amongst patients receiving buprenorphine-naloxone for OUD and identify the association between cannabis use and time to relapse. DESIGN Data were prospectively collected between May 2018 and October 2020, and patients were followed for 12 months. SETTING Thirty-one outpatient opioid agonist treatment clinics across Ontario, Canada. PARTICIPANTS All patients 16 years of age or older receiving buprenorphine-naloxone for OUD who had a urine toxicology screen negative for opioids at baseline were eligible for inclusion. Of the 488 patients consecutively sampled, 466 were included. EXPOSURE Cannabis use. MAIN OUTCOME AND MEASURE Relapse to opioid use assessed using urine toxicology screens. We employed a multivariable Cox-proportional hazard model for our analyses. RESULTS We found that cannabis use was not protective against relapse [hazard ratio (HR) = 1.03, 95% confidence interval (CI): 0.78, 1.36, p = 0.84]. We found that participants who have been in treatment for at least two years had a 44% decrease in the hazard of relapse compared to those in treatment for less than a year (HR = 0.56, 95% CI: 0.34, 0.92, p = 0.021). We also found that the hazard of relapse was 2.6 times higher for participants who were intravenous drug users (HR = 2.61, 95% CI: 1.74, 3.91, p < 0.001), and that for every 1mg increase in the participants' buprenorphine-naloxone dose, the hazard of relapse is 2% greater (HR = 1.02, 95% CI: 1.01, 1.03, p < 0.001). CONCLUSION Our analysis failed to show cannabis to be protective against relapse to opioid use in patients receiving buprenorphine-naloxone for OUD. We identified that individuals who inject drugs, are on higher doses of buprenorphine-naloxone, or have been in treatment for less than two years have a higher hazard for relapse. The presence of such factors may thus warrant closer patient follow-up and more stringent treatment protocols to mitigate risk of relapse and potential overdose.
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Affiliation(s)
- Leen Naji
- Department of Family Medicine, McMaster University, Hamilton, ON, Canada.,Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada
| | - Tea Rosic
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada.,Department of Psychiatry, University of Ottawa, Ottawa, ON, Canada
| | - Nitika Sanger
- Medical Sciences Graduate Program, McMaster University, Hamilton, ON, Canada
| | - Brittany Dennis
- Department of Medicine, McMaster University, Hamilton, ON, Canada
| | - Alannah Hillmer
- Neuroscience Graduate Program, Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, ON, Canada
| | - Jacqueline Hudson
- Department of Psychiatry and Behavioral Neurosciences, McMaster University, Hamilton, ON, Canada
| | - Andrew Worster
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada.,Department of Medicine, McMaster University, Hamilton, ON, Canada
| | - James Paul
- Department of Anesthesia, McMaster University, Hamilton, ON, Canada
| | - David C Marsh
- Northern Ontario School of Medicine, Laurentian University, Sudbury, ON, Canada
| | - Lehana Thabane
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada.,Biostatistics Unit, Research Institute at St Joseph's Healthcare, Hamilton, ON, Canada
| | - Zainab Samaan
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada.,Department of Psychiatry and Behavioral Neurosciences, McMaster University, Hamilton, ON, Canada
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Chawar C, Hillmer A, Lamri A, Kapczinski F, Thabane L, Pare G, Samaan Z. Implications of OPRM1 and CYP2B6 variants on treatment outcomes in methadone-maintained patients in Ontario: Exploring sex differences. PLoS One 2021; 16:e0261201. [PMID: 34910759 PMCID: PMC8673616 DOI: 10.1371/journal.pone.0261201] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Accepted: 11/28/2021] [Indexed: 11/19/2022] Open
Abstract
Genetic variants in the OPRM1 and CYP2B6 genes, respectively coding for an opioid receptor and methadone metabolizers, have been linked to negative treatment outcomes in patients undergoing methadone maintenance treatment, with little consensus on their effect. This study aims to test the associations between pre-selected SNPs of OPRM1 and CYP2B6 and outcomes of continued opioid use, relapse, and methadone dose. It also aims to observe differences in associations within the sexes. 1,172 participants treated with methadone (nMale = 666, nFemale = 506) were included in this study. SNPs rs73568641 and rs7451325 from OPRM1 and all the tested CYP2B6 SNPs were detected to be in high linkage disequilibrium. Though no associations were found to be significant, noteworthy differences were observed in associations of OPRM1 rs73568641 and CYP2B6 rs3745274 with treatment outcomes between males and females. Further research is needed to determine if sex-specific differences are present.
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Affiliation(s)
- Caroul Chawar
- Neuroscience Graduate Program, McMaster University, Hamilton, ON, Canada
- Department of Psychiatry and Behavioural Neurosciences, St. Joseph’s Healthcare Hamilton, Hamilton, ON, Canada
| | - Alannah Hillmer
- Neuroscience Graduate Program, McMaster University, Hamilton, ON, Canada
- Department of Psychiatry and Behavioural Neurosciences, St. Joseph’s Healthcare Hamilton, Hamilton, ON, Canada
| | - Amel Lamri
- Department of Medicine, McMaster University, Hamilton, ON, Canada
- Population Health Research Institute, Hamilton, ON, Canada
| | - Flavio Kapczinski
- Department of Psychiatry and Behavioural Neurosciences, St. Joseph’s Healthcare Hamilton, Hamilton, ON, Canada
| | - Lehana Thabane
- Population Health Research Institute, Hamilton, ON, Canada
- Department of Health Research Method, Evidence, and Impact, McMaster University, Hamilton, ON, Canada
- Father Sean O’Sullivan Research Centre, St. Joseph’s Healthcare Hamilton, Hamilton, ON, Canada
| | - Guillaume Pare
- Population Health Research Institute, Hamilton, ON, Canada
- Department of Health Research Method, Evidence, and Impact, McMaster University, Hamilton, ON, Canada
| | - Zainab Samaan
- Department of Psychiatry and Behavioural Neurosciences, St. Joseph’s Healthcare Hamilton, Hamilton, ON, Canada
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van Reekum EA, Rosic T, Sergeant A, Sanger N, Rodrigues M, Rebinsky R, Panesar B, Deck E, Kim N, Woo J, D'Elia A, Hillmer A, Dufort A, Sanger S, Thabane L, Mbuagbaw L, Samaan Z. Delirium and other neuropsychiatric manifestations of COVID-19 infection in people with preexisting psychiatric disorders: a systematic review. J Med Case Rep 2021; 15:586. [PMID: 34903299 PMCID: PMC8667019 DOI: 10.1186/s13256-021-03140-6] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2021] [Accepted: 10/03/2021] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Psychiatric disorders increase risk of neuropsychiatric disease and poor outcomes, yet little is known about the neuropsychiatric manifestations of COVID-19 in the psychiatric population. The primary objective is to synthesize neuropsychiatric outcomes of COVID-19 in people with preexisting psychiatric disorders. METHODS Data were collected during an ongoing review of the impact of pandemics on people with existing psychiatric disorders. All study designs and gray literature were included. Medline, PsychInfo, CINAHL, EMBASE, and MedRx were searched from inception to September 1 2020. Risk of bias was assessed using a published tool that can accommodate all study types. Two independent authors screened the studies and extracted data. Data were narratively synthesized, as there were insufficient data to meta-analyze. Evidence was appraised according to GRADE. RESULTS Four case reports were included, comprising 13 participants from three countries. Many large-sample, relevant papers were omitted for not reporting psychiatric history, despite reporting other comorbidities. Included participants (n = 13) were hospitalized with COVID-19 and appeared to meet criteria for delirium. Myoclonus, rigidity, and alogia were also reported. The most commonly reported preexisting psychiatric diagnoses were mood disorders, schizophrenia, and alcohol use disorder. CONCLUSIONS People with preexisting psychiatric disorders may experience delirium, rigidity, myoclonus, and alogia during COVID-19 infection; although higher quality and longitudinal data are needed to better understand these phenomena. Relevant COVID-19 literature does not always report psychiatric history, despite heightened neuropsychiatric vulnerability within this population. TRIAL REGISTRATION PROSPERO (CRD42020179611).
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Affiliation(s)
- Emma A van Reekum
- Department of Psychiatry and Behavioural Neurosciences, Clinician Investigator Program, McMaster University, Hamilton, Canada
| | - Tea Rosic
- Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, Canada
| | - Anjali Sergeant
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Canada
| | - Nitika Sanger
- Medical Science Graduate Program, McMaster University, Hamilton, Canada
| | - Myanca Rodrigues
- Health Research Methodology Graduate Program, McMaster University, Hamilton, Canada
| | - Reid Rebinsky
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Canada
| | - Balpreet Panesar
- Neuroscience Graduate Program, McMaster University, Hamilton, Canada
| | - Eve Deck
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Canada
| | - Nayeon Kim
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Canada
| | - Julia Woo
- Department of Psychiatry and Behavioural Neurosciences, Clinician Investigator Program, McMaster University, Hamilton, Canada
| | - Alessia D'Elia
- Neuroscience Graduate Program, McMaster University, Hamilton, Canada
| | - Alannah Hillmer
- Neuroscience Graduate Program, McMaster University, Hamilton, Canada
| | - Alexander Dufort
- Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, Canada
| | | | - Lehana Thabane
- Department of Health Research, Evidence and Impact, McMaster University, Hamilton, Canada
- St. Joseph's Healthcare Hamilton, 100 West 5th Street, Hamilton, ON, L8N 3K7, Canada
| | - Lawrence Mbuagbaw
- Department of Health Research, Evidence and Impact, McMaster University, Hamilton, Canada
| | - Zainab Samaan
- Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, Canada.
- Department of Health Research, Evidence and Impact, McMaster University, Hamilton, Canada.
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Chawar C, Hillmer A, Sanger S, D’Elia A, Panesar B, Guan L, Xie DX, Bansal N, Abdullah A, Kapczinski F, Pare G, Thabane L, Samaan Z. A systematic review of GWAS identified SNPs associated with outcomes of medications for opioid use disorder. Addict Sci Clin Pract 2021; 16:70. [PMID: 34838141 PMCID: PMC8627063 DOI: 10.1186/s13722-021-00278-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Accepted: 11/10/2021] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Patients with opioid use disorder (OUD) display an interindividual variability in their response to medications for opioid use disorder (MOUD). A genetic basis may explain the variability in this response. However, no consensus has been reached regarding which genetic variants significantly contribute to MOUD outcomes. OBJECTIVES This systematic review aims to summarize genome-wide significant findings on MOUD outcomes and critically appraise the quality of the studies involved. METHODS Databases searched from inception until August 21st, 2020 include: MEDLINE, Web of Science, EMBASE, CINAHL and Pre-CINAHL, GWAS Catalog and GWAS Central. The included studies had to be GWASs that assessed MOUD in an OUD population. All studies were screened in duplicate. The quality of the included studies was scored and assessed using the Q-Genie tool. Quantitative analysis, as planned in the protocol, was not feasible, so the studies were analyzed qualitatively. RESULTS Our search identified 7292 studies. Five studies meeting the eligibility criteria were included. However, only three studies reported results that met our significance threshold of p ≤ 1.0 × 10-7. In total, 43 genetic variants were identified. Variants corresponding to CNIH3 were reported to be associated with daily heroin injection in Europeans, OPRM1, TRIB2, and ZNF146 with methadone dose in African Americans, EYS with methadone dose in Europeans, and SPON1 and intergenic regions in chromosomes 9 and 3 with plasma concentrations of S-methadone, R-methadone, and R-EDDP, respectively, in Han Chinese. LIMITATIONS The limitations of this study include not being able to synthesize the data in a quantitative way and a conservative eligibility and data collection model. CONCLUSION The results from this systematic review will aid in highlighting significant genetic variants that can be replicated in future OUD pharmacogenetics research to ascertain their role in patient-specific MOUD outcomes. Systematic review registration number CRD42020169121.
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Affiliation(s)
- Caroul Chawar
- Neuroscience Graduate Program, McMaster University, Hamilton, ON Canada
- Department of Psychiatry and Behavioural Neurosciences, St. Joseph’s Healthcare Hamilton, 100 West 5th St., Hamilton, ON L8N3K7 Canada
| | - Alannah Hillmer
- Neuroscience Graduate Program, McMaster University, Hamilton, ON Canada
- Department of Psychiatry and Behavioural Neurosciences, St. Joseph’s Healthcare Hamilton, 100 West 5th St., Hamilton, ON L8N3K7 Canada
| | - Stephanie Sanger
- Health Sciences Library, McMaster University, Hamilton, ON Canada
| | - Alessia D’Elia
- Neuroscience Graduate Program, McMaster University, Hamilton, ON Canada
- Department of Psychiatry and Behavioural Neurosciences, St. Joseph’s Healthcare Hamilton, 100 West 5th St., Hamilton, ON L8N3K7 Canada
| | - Balpreet Panesar
- Neuroscience Graduate Program, McMaster University, Hamilton, ON Canada
- Department of Psychiatry and Behavioural Neurosciences, St. Joseph’s Healthcare Hamilton, 100 West 5th St., Hamilton, ON L8N3K7 Canada
| | - Lucy Guan
- Department of Psychiatry and Behavioural Neurosciences, St. Joseph’s Healthcare Hamilton, 100 West 5th St., Hamilton, ON L8N3K7 Canada
- Health Sciences Program, McMaster University, Hamilton, ON Canada
| | - Dave Xiaofei Xie
- Department of Psychiatry and Behavioural Neurosciences, St. Joseph’s Healthcare Hamilton, 100 West 5th St., Hamilton, ON L8N3K7 Canada
- Health Sciences Program, McMaster University, Hamilton, ON Canada
| | - Nandini Bansal
- Department of Psychiatry and Behavioural Neurosciences, St. Joseph’s Healthcare Hamilton, 100 West 5th St., Hamilton, ON L8N3K7 Canada
- Health Sciences Program, McMaster University, Hamilton, ON Canada
| | - Aamna Abdullah
- Department of Psychiatry and Behavioural Neurosciences, St. Joseph’s Healthcare Hamilton, 100 West 5th St., Hamilton, ON L8N3K7 Canada
- Health Sciences Program, McMaster University, Hamilton, ON Canada
| | - Flavio Kapczinski
- Department of Psychiatry and Behavioural Neurosciences, St. Joseph’s Healthcare Hamilton, 100 West 5th St., Hamilton, ON L8N3K7 Canada
| | - Guillaume Pare
- Population Health Research Institute, Hamilton, ON Canada
- Department of Health Research Method, Evidence, and Impact, McMaster University, Hamilton, ON Canada
| | - Lehana Thabane
- Population Health Research Institute, Hamilton, ON Canada
- Department of Health Research Method, Evidence, and Impact, McMaster University, Hamilton, ON Canada
- Father Sean O’Sullivan Research Centre, St. Joseph’s Healthcare Hamilton, Hamilton, ON Canada
| | - Zainab Samaan
- Department of Psychiatry and Behavioural Neurosciences, St. Joseph’s Healthcare Hamilton, 100 West 5th St., Hamilton, ON L8N3K7 Canada
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Woo J, Shahid H, Hillmer A, Abdullah A, Deshpande S, Panesar B, Sanger N, Samaan Z. Factors affecting participant recruitment and retention in borderline personality disorder research: a feasibility study. Pilot Feasibility Stud 2021; 7:178. [PMID: 34544490 PMCID: PMC8450701 DOI: 10.1186/s40814-021-00915-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] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Accepted: 09/07/2021] [Indexed: 12/03/2022] Open
Abstract
Background Previous studies have shown that stigma is a major barrier to participation in psychiatric research and that individuals who participate in psychiatric research may differ clinically and demographically from non-participants. However, few studies have explored research recruitment and retention challenges in the context of personality disorders. Aim To provide an analysis of the factors affecting participant recruitment and retention in a study of borderline personality disorder among general psychiatric inpatients. Methods Adult inpatients in a tertiary psychiatric hospital were approached about participating in a cross-sectional study of borderline personality disorder. Recruitment rates, retention rates, and reasons for declining participation or withdrawing from the study were collected. Demographic characteristics were compared between participants and non-participants and between patients who remained in the study and those who withdrew. Results A total of 71 participants were recruited into the study between January 2018 and March 2020. Recruitment and retention rates were 45% and 70%, respectively. Lack of interest was the most commonly cited reason for non-participation, followed by scheduling conflicts and concerns regarding mental/physical well-being. Age and sex were not predictors of study participation or retention. Conclusions More research is needed to explore patients’ perspectives and attitudes towards borderline personality disorder diagnosis and research, determine effects of different recruitment strategies, and identify clinical predictors of recruitment and retention in personality disorder research.
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Affiliation(s)
- Julia Woo
- Department of Psychiatry and Behavioural Neurosciences, McMaster University, 1280 Main Street West, Hamilton, ON, Canada
| | - Hamnah Shahid
- Department of Psychology, Brock University, St. Catharines, ON, Canada
| | - Alannah Hillmer
- Department of Psychiatry and Behavioural Neurosciences, McMaster University, 1280 Main Street West, Hamilton, ON, Canada.,Dapartment of Psychology, Neuroscience & Behaviour, McMaster University, Hamilton, ON, Canada
| | - Alamna Abdullah
- Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Sarah Deshpande
- Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Balpreet Panesar
- Department of Psychiatry and Behavioural Neurosciences, McMaster University, 1280 Main Street West, Hamilton, ON, Canada.,Dapartment of Psychology, Neuroscience & Behaviour, McMaster University, Hamilton, ON, Canada
| | - Nitika Sanger
- Department of Psychiatry and Behavioural Neurosciences, McMaster University, 1280 Main Street West, Hamilton, ON, Canada.,Medical Sciences Graduate Program, McMaster University, Hamilton, ON, Canada
| | - Zena Samaan
- Department of Psychiatry and Behavioural Neurosciences, McMaster University, 1280 Main Street West, Hamilton, ON, Canada.
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Hillmer A, Chawar C, Sanger S, D’Elia A, Butt M, Kapoor R, Kapczinski F, Thabane L, Samaan Z. Genetic basis of cannabis use: a systematic review. BMC Med Genomics 2021; 14:203. [PMID: 34384432 PMCID: PMC8359088 DOI: 10.1186/s12920-021-01035-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 07/15/2021] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND With the increase in cannabis use rates, cannabis use disorder is being reported as one of the most common drug use disorders globally. Cannabis use has several known physical, psychological, and social adverse events, such as altered judgement, poor educational outcomes, and respiratory symptoms. The propensity for taking cannabis and the development of a cannabis use disorder may be genetically influenced for some individuals. Heritability estimates suggest a genetic basis for cannabis use, and several genome-wide association studies (GWASs) have identified possible regions of association, albeit with inconsistent findings. This systematic review aims to summarize the findings from GWASs investigating cannabis use and cannabis use disorder. METHODS This systematic review incorporates articles that have performed a GWAS investigating cannabis use or cannabis use disorder. MEDLINE, Web of Science, EMBASE, CINAHL, GWAS Catalog, GWAS Central, and NIH Database of Genotype and Phenotype were searched using a comprehensive search strategy. All studies were screened in duplicate, and the quality of evidence was assessed using the quality of genetic association studies (Q-Genie) tool. All studies underwent qualitative synthesis; however, quantitative analysis was not feasible. RESULTS Our search identified 5984 articles. Six studies met our eligibility criteria and were included in this review. All six studies reported results that met our significance threshold of p ≤ 1.0 × 10-7. In total 96 genetic variants were identified. While meta-analysis was not possible, this review identified the following genes, ANKFN1, INTS7, PI4K2B, CSMD1, CST7, ACSS1, and SCN9A, to be associated with cannabis use. These regions were previously reported in different mental health conditions, however not in relation to cannabis use. CONCLUSION This systematic review summarized GWAS findings within the field of cannabis research. While a meta-analysis was not possible, the summary of findings serves to inform future candidate gene studies and replication efforts. Systematic Review Registration PROSPERO CRD42020176016.
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Affiliation(s)
- Alannah Hillmer
- Neuroscience Graduate Program, Department of Psychiatry and Behavioural Neurosciences, McMaster University, 100 West 5th St., Hamilton, ON L8N 3K7 Canada
| | - Caroul Chawar
- Neuroscience Graduate Program, Department of Psychiatry and Behavioural Neurosciences, McMaster University, 100 West 5th St., Hamilton, ON L8N 3K7 Canada
| | - Stephanie Sanger
- Health Science Library, McMaster University, 1280 Main St. W., Hamilton, ON L8S 4L8 Canada
| | - Alessia D’Elia
- Neuroscience Graduate Program, Department of Psychiatry and Behavioural Neurosciences, McMaster University, 100 West 5th St., Hamilton, ON L8N 3K7 Canada
| | - Mehreen Butt
- Integrated Science Program, McMaster University, 1280 Main St. W., Hamilton, ON L8S 4L8 Canada
| | - Raveena Kapoor
- Michael G. DeGroote School of Medicine, McMaster University, 1280 Main St. W., Hamilton, ON L8S 4L8 Canada
| | - Flavio Kapczinski
- Neuroscience Graduate Program, Department of Psychiatry and Behavioural Neurosciences, McMaster University, 100 West 5th St., Hamilton, ON L8N 3K7 Canada
| | - Lehana Thabane
- Department of Health Research Method, Evidence and Impact, 1280 Main St. W., Hamilton, ON L8S 4L8 Canada
| | - Zainab Samaan
- Neuroscience Graduate Program, Department of Psychiatry and Behavioural Neurosciences, McMaster University, 100 West 5th St., Hamilton, ON L8N 3K7 Canada
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11
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Au VYO, Rosic T, Sanger N, Hillmer A, Chawar C, Worster A, Marsh DC, Thabane L, Samaan Z. Factors associated with opioid overdose during medication-assisted treatment: How can we identify individuals at risk? Harm Reduct J 2021; 18:71. [PMID: 34238301 PMCID: PMC8265117 DOI: 10.1186/s12954-021-00521-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 06/28/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Due to the loss of tolerance to opioids during medication-assisted treatment (MAT), this period may represent a time of heightened risk for overdose. Identifying factors associated with increased risk of overdose during treatment is therefore paramount to improving outcomes. We aimed to determine the prevalence of opioid overdoses in patients receiving MAT. Additionally, we explored factors associated with opioid overdose during MAT and the association between length of time enrolled in MAT and overdose. METHODS Data were collected prospectively from 2360 participants receiving outpatient MAT in Ontario, Canada. Participants were divided into three groups by overdose status: no history of overdose, any lifetime history of overdose, and emergency department visit for opioid overdose in the last year. We used a multivariate multinomial regression model to assess demographic and clinical factors associated with overdose status. RESULTS Twenty-four percent of participants reported a lifetime history of overdose (n = 562), and 8% reported an emergency department (ED) visit for opioid overdose in the last year (n = 179). Individuals with a recent ED visit for opioid overdose were in treatment for shorter duration (odds ratio [OR] 0.92, 95% confidence interval [CI] 0.87, 0.97, p = 0.001). Individuals with a lifetime or recent history of overdose were more likely to be younger in age (OR 0.93, 95% CI 0.89, 0.98, p = 0.007 and OR 0.84, 95% CI 0.77, 0.92, p < 0.001, respectively), report more physical symptoms (OR 1.02, 95% CI 1.01, 1.03, p = 0.005 and OR 1.03, 95% CI 1.01, 1.05, p = 0.005, respectively), and had higher rates of non-prescription benzodiazepine use (OR 1.87, 95% CI 1.32, 2.66, p < 0.001 and OR 2.34, 95% CI 1.43, 3.81, p = 0.001, respectively) compared to individuals with no history of overdose. CONCLUSIONS A considerable number of patients enrolled in MAT have experienced overdose. Our study highlights that there are identifiable factors associated with a patient's overdose status that may represent areas for intervention. In particular, longer duration in MAT is associated with a decreased risk of overdose.
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Affiliation(s)
- Vivian Y O Au
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, ON, Canada
| | - Tea Rosic
- Department of Psychiatry and Behavioral Neurosciences, McMaster University, 100 West 5th St, Hamilton, ON, L8N 3K7, Canada
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada
| | - Nitika Sanger
- Medical Sciences Graduate Program, McMaster University, Hamilton, ON, Canada
| | - Alannah Hillmer
- Neuroscience Graduate Program, McMaster University, Hamilton, ON, Canada
| | - Caroul Chawar
- Neuroscience Graduate Program, McMaster University, Hamilton, ON, Canada
| | - Andrew Worster
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada
- Department of Medicine, McMaster University, Hamilton, ON, Canada
| | - David C Marsh
- Northern Ontario School of Medicine, Sudbury, ON, Canada
- Canadian Addiction Treatment Centres, Markham, ON, Canada
- ICES North, Sudbury, ON, Canada
| | - Lehana Thabane
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada
- Biostatistics Unit, Research Institute At St Joseph's Healthcare, Hamilton, ON, Canada
| | - Zainab Samaan
- Department of Psychiatry and Behavioral Neurosciences, McMaster University, 100 West 5th St, Hamilton, ON, L8N 3K7, Canada.
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada.
- Population Genomics Program, McMaster University, Hamilton, ON, Canada.
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12
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Sanger N, Panesar B, Rosic T, Dennis B, D'Elia A, Hillmer A, Chawar C, Naji L, Hudson J, Samaan MC, de Souza RJ, Marsh DC, Thabane L, Samaan Z. The future of precision medicine in opioid use disorder: inclusion of patient-important outcomes in clinical trials. Braz J Psychiatry 2021; 43:138-146. [PMID: 32556002 PMCID: PMC8023161 DOI: 10.1590/1516-4446-2019-0734] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 04/17/2020] [Indexed: 12/04/2022]
Abstract
Opioid use has reached an epidemic proportion in Canada and the United States that is mostly attributed to excess availability of prescribed opioids for pain. This excess in opioid use led to an increase in the prevalence of opioid use disorder (OUD) requiring treatment. The most common treatment recommendations include medication-assisted treatment (MAT) combined with psychosocial interventions. Clinical trials investigating the effectiveness of MAT, however, have a limited focus on effectiveness measures that overlook patient-important outcomes. Despite MAT, patients with OUD continue to suffer negative consequences of opioid use. Patient goals and personalized medicine are overlooked in clinical trials and guidelines, thus missing an opportunity to improve prognosis of OUD by considering precision medicine in addiction trials. In this mixed-methods study, patients with OUD receiving MAT (n=2,031, mean age 39.1 years [SD 10.7], 44% female) were interviewed to identify patient goals for MAT. The most frequently reported patient-important outcomes were to stop treatment (39%) and to avoid all drugs (25%). These results are inconsistent with treatment recommendations and trial outcome measures. We discuss theses inconsistencies and make recommendations to incorporate these outcomes to achieve patient-centered and personalized treatment strategies.
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Affiliation(s)
- Nitika Sanger
- Medical Science Graduate Program, McMaster University, Hamilton, ON, Canada
| | - Balpreet Panesar
- Neuroscience Graduate Program, McMaster University, Hamilton, ON, Canada
| | - Tea Rosic
- Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, ON, Canada
| | - Brittany Dennis
- Department of Medicine, McMaster University, Hamilton, ON, Canada
| | - Alessia D'Elia
- Neuroscience Graduate Program, McMaster University, Hamilton, ON, Canada
| | - Alannah Hillmer
- Neuroscience Graduate Program, McMaster University, Hamilton, ON, Canada
| | - Caroul Chawar
- Neuroscience Graduate Program, McMaster University, Hamilton, ON, Canada
| | - Leen Naji
- Department of Family Medicine, Halton Healthcare, Milton, ON, Canada
| | - Jacqueline Hudson
- Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, ON, Canada
| | - M. Constantine Samaan
- Department of Pediatrics, McMaster University, Hamilton, ON, Canada
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, ON, Canada
| | - Russell J. de Souza
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada
- Population Genomics Program, Chanchlani Research Centre, McMaster University, Hamilton, ON, Canada
| | - David C. Marsh
- Northern Ontario School of Medicine, Laurentian University, Sudbury, ON, Canada
| | - Lehana Thabane
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada
| | - Zainab Samaan
- Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, ON, Canada
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada
- Population Genomics Program, Chanchlani Research Centre, McMaster University, Hamilton, ON, Canada
- Clinician Investigator Program, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
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13
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Tan A, Chua K, Teng Y, Takano A, Alvarez J, Nahar R, Rohatgi N, Lai G, Aung Z, Yeong J, Lim K, Naeini M, Kassam I, Jain A, Tan W, Gogna A, Too C, Kanesvaran R, Ng Q, Ang M, Rajasekaran T, Devanand A, Phua G, Tan B, Lee Y, Wang L, Teo A, Khng A, Lim M, Suteja L, Toh C, Lim W, Iyer N, Tam W, Tan E, Zhai W, Hillmer A, Skanderup A, Tan D. MA13.08 Genomic and Transcriptomic Features of Distinct Resistance Trajectories in EGFR Mutant Non-Small Cell Lung Cancer (NSCLC). J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.269] [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: 11/17/2022]
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14
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Panesar B, Rosic T, Rodrigues M, Sanger N, Baptist-Mohseni N, Hillmer A, Chawar C, D'Elia A, Minuzzi L, Thabane L, Samaan Z. The Role of Perceived Social Support in the Association Between Stressful Life Events and Suicidal Behavior. Front Psychiatry 2021; 12:699682. [PMID: 34566710 PMCID: PMC8460765 DOI: 10.3389/fpsyt.2021.699682] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 04/23/2021] [Accepted: 08/17/2021] [Indexed: 01/05/2023] Open
Abstract
Background: Suicide is a serious public health concern for which there have been well-established protective and risk factors reported in literature. There is a lack of evidence on the indirect effects of other variables on these factors. Specifically, the association between stressful life events and suicidal behavior may be affected by perceived social support, but its role in this association is largely uninvestigated. Objectives: Thus, this paper aims to explore the role of perceived social support in the association between stressful life events and suicidal behavior. Perceived social support will be explored as a mediator and as a moderator in this association. Methods: Data were obtained from the Determinants of Suicidal Behavior Conventional and Emergent Risk (DISCOVER), a study conducted to identify risk factors of suicidal behavior. The study participants are individuals with suicide attempts admitted to hospital. Participants (n = 343) were recruited from hospital setting. Suicidal behavior was measured using two outcomes (1) the occurrence of a suicide attempt (2) level of suicide intent as measured by the Pierce Suicide Intent Scale. Perceived social support was measured using the Sarason Social Support Questionnaire. Results: Stressful life events were significantly associated with suicide attempts (OR 1.440, 95% CI 1.440, 1.682, p < 0.001) and perceived social support (B -0.785, 95% CI -1.501, -0.068, p = 0.032). There was no significant mediation effect by perceived social support in the association between stressful life events and suicide attempts (Sobel's test statistic 1.64, p = 0.100). Perceived social support did not moderate the relationship between stressful life events and suicide attempts [(OR 1.007, 95% CI 0.987, 1.027, p = 0.514] or the relationship between stressful life events and level of suicidal intent (B -0.043, 95% CI -0.132, 0.046, p = 0.343). Conclusion: Stressful life events are associated with increased risk of suicide attempts. The study also identified an inverse relationship between stressful life events and perceived social support. These associations were independent of perceived social support. This study highlights the effects of stressful life events on suicide risk is not affected by perceived social support, requiring further investigation into measures to reduce the impact of social stressors on people with risk of suicide.
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Affiliation(s)
- Balpreet Panesar
- Neuroscience Graduate Program, McMaster University, Hamilton, ON, Canada
| | - Tea Rosic
- Department of Psychiatry and Behavioral Neurosciences, McMaster University, Hamilton, ON, Canada.,Health Research Methodology Graduate Program, McMaster University, Hamilton, ON, Canada
| | - Myanca Rodrigues
- Health Research Methodology Graduate Program, McMaster University, Hamilton, ON, Canada
| | - Nitika Sanger
- Medical Science Graduate Program, McMaster University, Hamilton, ON, Canada
| | | | - Alannah Hillmer
- Neuroscience Graduate Program, McMaster University, Hamilton, ON, Canada
| | - Caroul Chawar
- Department of Psychiatry and Behavioral Neurosciences, McMaster University, Hamilton, ON, Canada
| | - Alessia D'Elia
- Neuroscience Graduate Program, McMaster University, Hamilton, ON, Canada
| | - Luciano Minuzzi
- Department of Psychiatry and Behavioral Neurosciences, McMaster University, Hamilton, ON, Canada
| | - Lehana Thabane
- Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, ON, Canada.,Centre for Evaluation of Medicines, Programs for Assessment of Technology in Health (PATH) Research Institute, McMaster University, Hamilton, ON, Canada
| | - Zainab Samaan
- Department of Psychiatry and Behavioral Neurosciences, McMaster University, Hamilton, ON, Canada.,Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, ON, Canada.,Centre for Evaluation of Medicines, Programs for Assessment of Technology in Health (PATH) Research Institute, McMaster University, Hamilton, ON, Canada
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15
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Chawar C, Hillmer A, Sanger S, D’Elia A, Panesar B, Guan L, Xie DX, Bansal N, Abdullah A, Kapczinski F, Pare G, Thabane L, Samaan Z. GWAS-identified genetic variants associated with medication-assisted treatment outcomes in patients with opioid use disorder: a systematic review and meta-analysis protocol. Syst Rev 2020; 9:200. [PMID: 32873330 PMCID: PMC7466496 DOI: 10.1186/s13643-020-01461-z] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 08/21/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The burden of opioid use disorder (OUD) has been increasing in North America. Administration of medication-assisted treatments (MATs) for OUD on an individual-dose basis has been shown to affect patient responses to treatment, proving to be, on occasion, dangerous. A genetic basis has been identified for some MAT responses in a candidate gene context, but consensus has not been reached for any genome-wide significant associations. This systematic review aims to identify and assess any genetic variants associated with MAT patient outcomes at genome-wide significance. METHODS The databases searched by the authors will be: MEDLINE, Web of Science, EMBASE, CINAHL and Pre-CINAHL, GWAS Catalog, GWAS Central, and NIH Database of Genotypes and Phenotypes. A title and abstract screening, full-text screening, data extraction, and quality assessment will be completed in duplicate for each study via Covidence. Treatment outcomes of interest include continued opioid use or abstinence during treatment or at follow-up, time to relapse, treatment retention rates, opioid overdose, other substance use, comorbid psychiatric disorders, risk taking behaviors, MAT plasma concentrations, and mortality rates. Analysis methods applied, if appropriate, will include random effects meta-analysis with pooled odds ratios for all outcomes. Subgroup analyses will also be implemented, when possible. DISCUSSION This systematic review can hopefully inform the direction of future research, aiding in the development of a safer and more patient-centered treatment. It will be able to highlight genome-wide significant variants that are replicable and associated with MAT patient outcomes. SYSTEMATIC REVIEW REGISTRATION This systematic review protocol has been registered with the International Prospective Register of Systematic Reviews (PROSPERO) (registration ID CRD42020169121).
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Affiliation(s)
- Caroul Chawar
- Neuroscience Graduate Program, McMaster University, Hamilton, ON Canada
- Department of Psychiatry and Behavioural Neurosciences, St. Joseph’s Healthcare Hamilton, Hamilton, ON Canada
| | - Alannah Hillmer
- Neuroscience Graduate Program, McMaster University, Hamilton, ON Canada
- Department of Psychiatry and Behavioural Neurosciences, St. Joseph’s Healthcare Hamilton, Hamilton, ON Canada
| | - Stephanie Sanger
- Health Sciences Library, McMaster University, Hamilton, ON Canada
| | - Alessia D’Elia
- Neuroscience Graduate Program, McMaster University, Hamilton, ON Canada
- Department of Psychiatry and Behavioural Neurosciences, St. Joseph’s Healthcare Hamilton, Hamilton, ON Canada
| | - Balpreet Panesar
- Neuroscience Graduate Program, McMaster University, Hamilton, ON Canada
- Department of Psychiatry and Behavioural Neurosciences, St. Joseph’s Healthcare Hamilton, Hamilton, ON Canada
| | - Lucy Guan
- Department of Psychiatry and Behavioural Neurosciences, St. Joseph’s Healthcare Hamilton, Hamilton, ON Canada
- Health Sciences Program, McMaster University, Hamilton, ON Canada
| | - Dave Xiaofei Xie
- Department of Psychiatry and Behavioural Neurosciences, St. Joseph’s Healthcare Hamilton, Hamilton, ON Canada
- Health Sciences Program, McMaster University, Hamilton, ON Canada
| | - Nandini Bansal
- Department of Psychiatry and Behavioural Neurosciences, St. Joseph’s Healthcare Hamilton, Hamilton, ON Canada
- Health Sciences Program, McMaster University, Hamilton, ON Canada
| | - Aamna Abdullah
- Department of Psychiatry and Behavioural Neurosciences, St. Joseph’s Healthcare Hamilton, Hamilton, ON Canada
- Health Sciences Program, McMaster University, Hamilton, ON Canada
| | - Flavio Kapczinski
- Department of Psychiatry and Behavioural Neurosciences, St. Joseph’s Healthcare Hamilton, Hamilton, ON Canada
| | - Guillaume Pare
- Population Health Research Institute, Hamilton, ON Canada
- Department of Health Research Method, Evidence, and Impact, McMaster University, Hamilton, ON Canada
| | - Lehana Thabane
- Population Health Research Institute, Hamilton, ON Canada
- Department of Health Research Method, Evidence, and Impact, McMaster University, Hamilton, ON Canada
- Father Sean O’Sullivan Research Centre, St. Joseph’s Healthcare Hamilton, Hamilton, ON Canada
| | - Zainab Samaan
- Department of Psychiatry and Behavioural Neurosciences, St. Joseph’s Healthcare Hamilton, Hamilton, ON Canada
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16
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Sanger N, Bhatt M, Singhal N, Panesar B, D’Elia A, Trottier M, Shahid H, Hillmer A, Baptist-Mohseni N, Roczyki V, Soni D, Brush M, Lovell E, Sanger S, Samaan MC, de Souza RJ, Thabane L, Samaan Z. Treatment Outcomes in Patients With Opioid Use Disorder Who Were First Introduced to Opioids by Prescription: A Systematic Review and Meta-Analysis. Front Psychiatry 2020; 11:812. [PMID: 33005151 PMCID: PMC7485127 DOI: 10.3389/fpsyt.2020.00812] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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: 06/01/2020] [Accepted: 07/28/2020] [Indexed: 12/28/2022] Open
Abstract
OBJECTIVE Prescription opioid misuse has led to a new cohort of opioid use disorder (OUD) patients who were introduced to opioids through a legitimate prescription. This change has caused a shift in the demographic profile of OUD patients from predominantly young men to middle age and older people. The management of OUD includes medication-assisted treatment (MAT), which produces varying rates of treatment response. In this study, we will examine whether the source of first opioid use has an effect on treatment outcomes in OUD. Using a systematic review of the literature, we will investigate the association between source of first opioid introduction and treatment outcomes defined as continuing illicit opioid use and poly-substance use while in MAT. METHODS Medline, EMBASE, CINHAL, and PsycInfo were searched from inception to December 31st, 2019 inclusive using a comprehensive search strategy. Five pairs of reviewers conducted screening and data extraction independently in duplicate. The review is conducted and reported according to the PRISMA guidelines. A random-effects model was used for meta analyses assuming heterogeneity among the included studies. RESULTS The initial search results in 27,345 articles that were screened, and five observational studies were included in the qualitative and quantitative analyses. Our results found that those who were introduced to opioids through a legitimate prescription were significantly less likely to have illicit opioid use (0.70, 95% CI 0.50, 0.99) while on MAT. They were also less likely to use cannabis (0.54, 95% CI 0.32, 0.89), alcohol (0.75, 95% CI 0.59, 0.95), cocaine (0.50, 95% CI 0.29, 0.85), and injection drug use (0.25, 95% CI 0.14, 0.43) than those introduced to opioids through recreational means. CONCLUSION This study shows that the first exposure to opioids, whether through a prescription or recreationally, influences prognosis and treatment outcomes of opioid use disorder. Although the increased pattern of prescribing opioids may have led to increased OUD in a new cohort of patients, these patients are less likely to continue to use illicit drugs and have a different prognostic and clinical profile that requires a tailored approach to treatment. SYSTEMATIC REVIEW REGISTRATION PROSPERO CRD42017058143.
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Affiliation(s)
- Nitika Sanger
- Medical Sciences Graduate Program, McMaster University, Hamilton, ON, Canada
- Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, ON, Canada
| | - Meha Bhatt
- Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, ON, Canada
| | - Nikhita Singhal
- Undergraduate MD Program, McMaster University, Hamilton, ON, Canada
| | - Balpreet Panesar
- Life Sciences Undergraduate Program, McMaster University, Hamilton, ON, Canada
- Department of Biology, McMaster University, Hamilton, ON, Canada
| | - Alessia D’Elia
- Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, ON, Canada
- McMaster Integrative Neuroscience Discovery & Study Program, McMaster University, Hamilton, ON, Canada
| | - Maegan Trottier
- Department of Psychology, Neuroscience and Behaviour, McMaster University, Hamilton, ON, Canada
| | - Hamnah Shahid
- Arts & Sciences, McMaster University, Hamilton, ON, Canada
| | - Alannah Hillmer
- Department of Psychology, Neuroscience and Behaviour, McMaster University, Hamilton, ON, Canada
| | - Natasha Baptist-Mohseni
- Department of Psychology, Neuroscience and Behaviour, McMaster University, Hamilton, ON, Canada
| | - Victoria Roczyki
- Department of Biology, McMaster University, Hamilton, ON, Canada
- Department of Psychology, Neuroscience and Behaviour, McMaster University, Hamilton, ON, Canada
| | - Divya Soni
- Health Sciences Undergraduate Program, McMaster University, Hamilton, ON, Canada
| | - Maurana Brush
- Undergraduate MD Program, McMaster University, Hamilton, ON, Canada
| | - Elizabeth Lovell
- Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, ON, Canada
- Postgraduate Psychiatry Program, McMaster University, Hamilton, ON, Canada
| | - Stephanie Sanger
- Health Science Library, McMaster University, Hamilton, ON, Canada
| | - M. Constantine Samaan
- Division of Pediatric Endocrinology, McMaster Children’s Hospital, Hamilton, ON, Canada
| | - Russell J. de Souza
- Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, ON, Canada
| | - Lehana Thabane
- Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, ON, Canada
- Biostatistics Unit, St Joseph’s Healthcare—Hamilton, Hamilton, ON, Canada
| | - Zainab Samaan
- Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, ON, Canada
- Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, ON, Canada
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17
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Hillmer A, Chawar C, Sanger S, D'Elia A, Butt M, Kapoor R, Kapczinski F, Pare G, Thabane L, Samaan Z. Genetic determinants of cannabis use: a systematic review protocol. Syst Rev 2020; 9:190. [PMID: 32819433 PMCID: PMC7441561 DOI: 10.1186/s13643-020-01442-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 07/31/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND With the legalization of cannabis in Canada, there is an increase trend in use. Cannabis has been known to have several health implications, one of which is the development of cannabis use disorder (CUD). CUD is more common in males than females, as well as in certain ethnic groups such as Native Americans. Additionally, both environmental and genetic risk factors have been found for cannabis use. The objective of this systematic review will be to summarize the genetic variants associated with cannabis use which have reached borderline genome-wide significance. METHODS This systematic review will incorporate articles that have performed a genome-wide association study (GWAS) investigating cannabis use. MEDLINE, Web of Science, EMBASE, GWAS Catalog, GWAS Central, and NIH Database of Genotype and Phenotype will be searched using a comprehensive search strategy. The quality of genetic association studies (Q-Genie) tool will be utilized to assess the quality of the included studies. All screening and data extraction will occur independently by two authors. If feasible, a random-effects meta-analysis will be conducted on pooled odds ratios of single nucleotide polymorphisms reaching borderline genome-wide significance. DISCUSSION This systematic review will synthesize available GWAS on cannabis use. Results from this review will inform and direct further investigation of genetic variants associated with cannabis use. SYSTEMATIC REVIEW REGISTRATION PROSPERO CRD42020176016.
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Affiliation(s)
- Alannah Hillmer
- Neuroscience Graduate Program, Department of Psychiatry and Behavioural Neurosciences, McMaster University, 100 West 5th St., Hamilton, ON, L8N 3 K7, Canada
| | - Caroul Chawar
- Neuroscience Graduate Program, Department of Psychiatry and Behavioural Neurosciences, McMaster University, 100 West 5th St., Hamilton, ON, L8N 3 K7, Canada
| | - Stephanie Sanger
- Health Science Library, McMaster University, 1280 Main St. W, Hamilton, ON, L8S 4 L8, Canada
| | - Alessia D'Elia
- Neuroscience Graduate Program, Department of Psychiatry and Behavioural Neurosciences, McMaster University, 100 West 5th St., Hamilton, ON, L8N 3 K7, Canada
| | - Mehreen Butt
- Integrated Science Program, McMaster University, 1280 Main St. W, Hamilton, ON, L8S 4 L8, Canada
| | - Raveena Kapoor
- Health Sciences Program, McMaster University, 1280 Main St. W, Hamilton, ON, L8S 4 L8, Canada
| | - Flavio Kapczinski
- Department of Psychiatry and Behavioural Neurosciences, McMaster University, 100 West 5th St., Hamilton, ON, L8N 3 K7, Canada
| | - Guillaume Pare
- Population Health Research Institute, McMaster University, 1280 Main St. W, Hamilton, ON, L8S 4 L8, Canada
| | - Lehana Thabane
- Department of Health Research Method, Evidence & Impact, 1280 Main St. W, Hamilton, ON, L8S 4 L8, Canada
| | - Zainab Samaan
- Department of Psychiatry and Behavioural Neurosciences, McMaster University, 100 West 5th St., Hamilton, ON, L8N 3 K7, Canada.
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Dennis BB, Akhtar D, Cholankeril G, Kim D, Sanger N, Hillmer A, Chawar C, D'Elia A, Panesar B, Worster A, Marsh DC, Thabane L, Samaan Z, Ahmed A. The impact of chronic liver disease in patients receiving active pharmacological therapy for opioid use disorder: One-year findings from a prospective cohort study. Drug Alcohol Depend 2020; 209:107917. [PMID: 32088589 DOI: 10.1016/j.drugalcdep.2020.107917] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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: 09/19/2019] [Revised: 02/08/2020] [Accepted: 02/11/2020] [Indexed: 11/16/2022]
Abstract
INTRODUCTION Despite the demonstrated benefit of methadone, the incidence opioid-related overdose, and its associated mortality continues to rise at an alarming rate. The impact of high prevalence comorbid features such as chronic liver disease (CLD) on methadone treatment response remain unclear. AIM To determine whether CLD is associated with poor response to methadone treatment. METHODS Using a well-established multi-center cohort from the Genetics of Opioid Addiction Study (GENOA), we evaluated if presence of CLD among 1234 eligible patients with opioid use disorder receiving methadone treatment impacted health and behavioural responses to treatment. CLD was classified as any liver disorder/dysfunction present for a minimum period of six months. Serial urine toxicology assessments were used to determine treatment response. The effect of CLD was determined using a multi-variable logistic regression model. RESULTS CLD was present in 25 % (n = 314) of the population. On average, patients with CLD were found to be older (mean age 44 vs 36 years, p < 0.0001), unemployed (81.8 % vs 61 %, p < 0.0001), and receiving government disability benefits at significantly higher rates (21.9 % vs 11 %, p < 0.0001). Increased levels of physical craving, emotional stress, as well as health risk behaviors were noted in CLD patients. Findings from the multi-variable model demonstrate a 68 % increased risk for dangerous opioid consumption behaviors (Odds Ration [OR]: 1.68, 95 % Confidence Interval [CI] 1.22, 2.31, p = 0.001) among patients with CLD. Methadone dose (OR: 0.76, 95 % CI 0.70, 0.81, p < 0.0001) was shown to be protective with a significant risk reduction of 24 % per 20 mg increase in methadone. Duration in treatment was also found to be protective (OR: 0.99, 95 % CI 0.97, 0.99, p < 0.0001). CONCLUSION CLD poses a distinct risk for patients with opioid addiction. Closer drug monitoring, and substance use contingency management should be considered to reduce mortality risk in these patients.
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Affiliation(s)
- Brittany B Dennis
- Department of Medicine, Michael G. DeGroote School of Medicine, McMaster University, Hamilton ON L8S4L8, Canada; Division of Gastroenterology and Hepatology, Stanford University School of Medicine, Stanford, CA 94305, USA.
| | - Daud Akhtar
- Department of Medicine, University of British Columbia, Vancouver Costal Health, Vancouver Canada.
| | - George Cholankeril
- Division of Gastroenterology and Hepatology, Stanford University School of Medicine, Stanford, CA 94305, USA.
| | - Donghee Kim
- Division of Gastroenterology and Hepatology, Stanford University School of Medicine, Stanford, CA 94305, USA.
| | - Nitika Sanger
- Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton ON L8S4L8, Canada; McMaser Neuroscience Graduate Program, McMaster University, Hamilton ON, L8S4L8, Canada.
| | - Alannah Hillmer
- Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton ON L8S4L8, Canada; McMaser Neuroscience Graduate Program, McMaster University, Hamilton ON, L8S4L8, Canada.
| | - Caroul Chawar
- Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton ON L8S4L8, Canada; McMaser Neuroscience Graduate Program, McMaster University, Hamilton ON, L8S4L8, Canada.
| | - Alessia D'Elia
- Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton ON L8S4L8, Canada; McMaser Neuroscience Graduate Program, McMaster University, Hamilton ON, L8S4L8, Canada.
| | - Balpreet Panesar
- Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton ON L8S4L8, Canada; McMaser Neuroscience Graduate Program, McMaster University, Hamilton ON, L8S4L8, Canada.
| | - Andrew Worster
- Department of Health Research Evaluation and Impact (Formerly Department of Clinical Epidemiology and Biostatistics), McMaster University, Hamilton ON L8S4L8, Canada.
| | - David C Marsh
- Northern Ontario School of Medicine, Sudbury ON P3E2C6, Canada; Canadian Addiction Treatment Centres, Markham ON L3T 7P6, Canada.
| | - Lehana Thabane
- Department of Health Research Evaluation and Impact (Formerly Department of Clinical Epidemiology and Biostatistics), McMaster University, Hamilton ON L8S4L8, Canada; Centre for Evaluation of Medicine, Hamilton ON L8S4L8, Canada.
| | - Zainab Samaan
- Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton ON L8S4L8, Canada; McMaser Neuroscience Graduate Program, McMaster University, Hamilton ON, L8S4L8, Canada; Department of Health Research Evaluation and Impact (Formerly Department of Clinical Epidemiology and Biostatistics), McMaster University, Hamilton ON L8S4L8, Canada; Population Genomics Program, Chanchlani Research Centre, McMaster University, Hamilton ON L8S4L8, Canada.
| | - Aijaz Ahmed
- Division of Gastroenterology and Hepatology, Stanford University School of Medicine, Stanford, CA 94305, USA.
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19
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Dennis BB, Sanger N, Bawor M, Naji L, Plater C, Worster A, Woo J, Bhalerao A, Baptist-Mohseni N, Hillmer A, Rice D, Corace K, Hutton B, Tugwell P, Thabane L, Samaan Z. A call for consensus in defining efficacy in clinical trials for opioid addiction: combined results from a systematic review and qualitative study in patients receiving pharmacological assisted therapy for opioid use disorder. Trials 2020; 21:30. [PMID: 31907000 PMCID: PMC6945391 DOI: 10.1186/s13063-019-3995-y] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2019] [Accepted: 12/13/2019] [Indexed: 11/23/2022] Open
Abstract
Background Given the complex nature of opioid addiction treatment and the rising number of available opioid substitution and antagonist therapies (OSAT), there is no ‘gold standard’ measure of treatment effectiveness, and each successive trial measures a different set of outcomes which reflect success in arbitrary or opportune terms. We sought to describe the variation in current outcomes employed across clinical trials for opioid addiction, as well as determine whether a discrepancy exists between the treatment targets that patients consider important and how treatment effectiveness is measured in the literature. Methods We searched nine commonly used databases (e.g., EMBASE, MEDLINE) from inception to August 1, 2015. Outcomes used across trials were extracted and categorized according to previously established domains. To evaluate patient-reported goals of treatment, semi-structured interviews were conducted with 18 adults undergoing methadone treatment. Results We identified 60 trials eligible for inclusion. Once outcomes were categorized into eight broad domains (e.g., abstinence/substance abuse), we identified 21 specific outcomes with furthermore 53 subdomains and 118 measurements. Continued opioid use and treatment retention were the most commonly reported measures (46%, n = 28). The majority of patients agreed that abstinence from opioids was a primary goal in their treatment, although they also stressed goals under-reported in clinical trials. Conclusions There is inconsistency in the measures used to evaluate the effectiveness of OSATs. Individual and population level decision making is being guided by a standard of effect considered useful to researchers yet in direct conflict with what patients deem important. Trial registration PROSPERO, CRD42013006507.
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Affiliation(s)
- Brittany B Dennis
- McMaster University Internal Medicine Residency Program, Department of Medicine, Faculty of Health Sciences, McMaster University, Hamilton, Canada.,Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Canada
| | - Nitika Sanger
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Canada
| | - Monica Bawor
- McMaster University Internal Medicine Residency Program, Department of Medicine, Faculty of Health Sciences, McMaster University, Hamilton, Canada
| | - Leen Naji
- Department of Family Medicine Residency Program, Michael G. Degroote School of Medicine, McMaster University, Hamilton, Canada
| | - Carolyn Plater
- Department of Psychiatry and Behavioural Neurosciences, McMaster University, 1280 Main Street West, Hamilton, Ontario, L8S 4L8, Canada
| | - Andrew Worster
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Canada.,Department of Medicine, Hamilton General Hospital, Hamilton, Canada
| | - Julia Woo
- University of Toronto Faculty of Medicine, University of Toronto, Toronto, Canada
| | - Anuja Bhalerao
- University of Toronto Faculty of Medicine, University of Toronto, Toronto, Canada
| | - Natasha Baptist-Mohseni
- Department of Psychiatry and Behavioural Neurosciences, McMaster University, 1280 Main Street West, Hamilton, Ontario, L8S 4L8, Canada
| | - Alannah Hillmer
- Department of Psychiatry and Behavioural Neurosciences, McMaster University, 1280 Main Street West, Hamilton, Ontario, L8S 4L8, Canada
| | - Danielle Rice
- Faculty of Science, Department of Psychology, McGill University, Montreal, Canada.,Center for Practice Changing Research, Ottawa Hospital Research Institute, Ottawa, Canada
| | - Kim Corace
- Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada.,University of Ottawa Institute of Mental Health Research, Ottawa, ON, Canada
| | - Brian Hutton
- Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada.,School of Epidemiology and Public Health, University of Ottawa, Ottawa, Ontario, Canada
| | - Peter Tugwell
- WHO Collaborating Centre for Knowledge Translation and Health Technology Assessment in Health Equity, Bruyère Research Institute, Ottawa, Canada
| | - Lehana Thabane
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Canada.,Centre for Evaluation of Medicine, Hamilton, Canada.,System Linked Research Unit, Hamilton, Canada
| | - Zainab Samaan
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Canada. .,Department of Psychiatry and Behavioural Neurosciences, McMaster University, 1280 Main Street West, Hamilton, Ontario, L8S 4L8, Canada. .,Population Genomics Program, Chanchlani Research Center, McMaster University, Hamilton, Canada.
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20
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Shams I, Sanger N, Bhatt M, Rosic T, Luo C, Shahid H, Mouravska N, Tam SL, Hillmer A, Chawar C, D'Elia A, Hudson J, Marsh D, Thabane L, Samaan Z. The association between health conditions and cannabis use in patients with opioid use disorder receiving methadone maintenance treatment. BJPsych Open 2019; 5:e91. [PMID: 31625495 PMCID: PMC6854359 DOI: 10.1192/bjo.2019.78] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [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] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND Cannabis is the most commonly used substance among patients in methadone maintenance treatment (MMT) for opioid use disorder. Current treatment programmes neither screen nor manage cannabis use. The recent legalisation of cannabis in Canada incites consideration into how this may affect the current opioid crisis. AIMS Investigate the health status of cannabis users in MMT. METHOD Patients were recruited from addiction clinics in Ontario, Canada. Regression analyses were used to assess the association between adverse health conditions and cannabis use. Further analyses were used to assess sex differences and heaviness of cannabis use. RESULTS We included 672 patients (49.9% cannabis users). Cannabis users were more likely to consume alcohol (odds ratio 1.46, 95% CI 1.04-2.06, P = 0.029) and have anxiety disorders (odds ratio 1.75, 95% CI 1.02-3.02, P = 0.043), but were less likely to use heroin (odds ratio 0.45, 95% CI 0.24-0.86, P = 0.016). There was no association between cannabis use and pain (odds ratio 0.98, 95% CI 0.94-1.03, P = 0.463). A significant association was seen between alcohol and cannabis use in women (odds ratio 1.79, 95% CI 1.06-3.02, P = 0.028), and anxiety disorders and cannabis use in men (odds ratio 2.59, 95% CI 1.21-5.53, P = 0.014). Heaviness of cannabis use was not associated with health outcomes. CONCLUSIONS Our results suggest that cannabis use is common and associated with psychiatric comorbidities and substance use among patients in MMT, advocating for screening of cannabis use in this population. DECLARATION OF INTEREST None.
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Affiliation(s)
- Ieta Shams
- Medical student, Department of Psychiatry and Behavioural Neurosciences, McMaster University; and Faculty of Medicine, University of Ottawa, Canada
| | - Nitika Sanger
- PhD student, Department of Psychiatry and Behavioural Neurosciences, McMaster University, Canada
| | - Meha Bhatt
- Researcher, Department of Psychiatry and Behavioural Neurosciences, McMaster University; and Department of Health Research Methods, Evidence, and Impact, McMaster University, Canada
| | - Tea Rosic
- Psychiatry Resident, Department of Psychiatry and Behavioural Neurosciences, McMaster University, Canada
| | - Candice Luo
- Medical Student, Department of Psychiatry and Behavioural Neurosciences, McMaster University, Canada
| | - Hamnah Shahid
- Psychology Graduate Program Student, Department of Psychiatry and Behavioural Neurosciences, McMaster University, Canada
| | - Natalia Mouravska
- Psychiatry Resident, Department of Psychiatry, The Ottawa Hospital General Campus, Canada
| | - Sabrina Lue Tam
- Resident, HHS McMaster Children's Hospital, McMaster University, Canada
| | - Alannah Hillmer
- Graduate student, Neuroscience Graduate Program, McMaster University, Canada
| | - Caroul Chawar
- Graduate student, Neuroscience Graduate Program, McMaster University, Canada
| | - Alessia D'Elia
- Graduate student, Neuroscience Graduate Program, McMaster University, Canada
| | - Jacqueline Hudson
- Research Assistant, Department of Psychiatry and Behavioural Neurosciences, McMaster University, Canada
| | - David Marsh
- Addiction Medicine Specialist, Northern Ontario School of Medicine, Laurentian University; and Researcher, Canadian Addiction Treatment Centres, Canada
| | - Lehana Thabane
- Professor, Department of Health Research Methods, Evidence, and Impact, McMaster University; Father Sean O'Sullivan Research Centre, St. Joseph's Healthcare Hamilton; and Researcher, Centre for Evaluation of Medicines, Programs for Assessment of Technology in Health (PATH) Research Institute, McMaster University, Canada
| | - Zainab Samaan
- Associate Professor, Department of Psychiatry and Behavioural Neurosciences, McMaster University; Psychiatrist, Department of Health Research Methods, Evidence, and Impact, McMaster University; and Researcher, Population Genomics Program, Chanchlani Research Centre, McMaster University, Canada
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21
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Nogova L, Malchers F, Hillmer A, Merkelbach-Bruse S, Pinto A, Woempner C, Riedel R, Scheffler M, Michels S, De Porre P, Santiago-Walker A, Fischer R, Abdulla D, Thomas R, Buettner R, Wolf J. FIND: A phase II study to evaluate the efficacy of erdafitinib in FGFR-altered squamous NSCLC. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz063.082] [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: 11/12/2022] Open
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22
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Sanger N, Bhatt M, Singhal N, Ramsden K, Baptist-Mohseni N, Panesar B, Shahid H, Hillmer A, D Elia A, Luo C, Rogers V, Arunan A, Baker-Beal L, Haber S, Henni J, Puckering M, Sun S, Ng K, Sanger S, Mouravaska N, Samaan MC, de Souza R, Thabane L, Samaan Z. Adverse Outcomes Associated with Prescription Opioids for Acute Low Back Pain: A Systematic Review and Meta-Analysis. Pain Physician 2019; 22:119-138. [PMID: 30921976] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
BACKGROUND Acute low back pain (ALBP) is a common clinical complaint that can last anywhere from 24 hours to 12 weeks. In recent years, there has been an opioid epidemic which is linked to the increased availability of prescription opioids. Though guidelines recommend that in the treatment of ALBP, opioids should be used when other treatments fail, we have seen an increase in opioid prescriptions for ALBP. With this crisis, it is important to examine if there are any adverse outcomes associated with prescribing opioids for ALBP. OBJECTIVE We aim to review the published literature to examine the adverse outcomes associated with opioid use for ALBP. STUDY DESIGN We performed a systematic review with meta-analysis in accordance with our published protocol and PRISMA guidelines. SETTING The review was conducted at McMaster University. METHODS Various electronic databases for articles published from inception to September 30, 2017, inclusive. Both randomized clinical trials and observational studies on the impact of opioid use in ALBP in the adult population were included. Eight pairs of independent reviewers performed screening, data extraction, and assessment of methodological quality. The identified articles were assessed for risk of bias using sensitivity analysis. Trials with comparative outcomes were reported in a meta-analysis using a fixed effects model. RESULTS A total of 13,889 studies were initially screened for the review and a total of 4 studies were included in the full review, of which 2 studies were meta-analyzed. Our results showed that prescribing opioids for ALBP was significantly associated with long-term continued opioid use (1.57, 95% CI, 1.06-2.33). There was no significant association found between unemployment duration and prescribing opioids for ALBP (3.54, 95% CI, -7.57 to 14.66). LIMITATIONS Due to the limited number of studies that considered unemployment, only an unpooled analysis was conducted. Among the included studies there was both statistical and clinical heterogeneity due to differences in methodology, study design, risk of selection or performance bias. Most of the studies had an unclear or high risk of bias and poorly defined side effects. CONCLUSIONS Due to the lack of literature examining long-term adverse outcomes associated with prescribing opioids for ALBP, no definitive conclusions can be made. However, with the literature available, there does seem to be risk associated with prescribing opioids for ALBP so there is a great need to conduct further investigations examining these adverse outcomes for ALBP patients. KEY WORDS Acute low back pain, opioids, prescriptions, low back pain, long-term use, opioid use disorder.
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Affiliation(s)
- Nitika Sanger
- Department of Psychiatry and Behavioural Neurosciences, McMaster University Hamilton, Ontario, Canada
| | - Meha Bhatt
- Department of Health Research Methods, Evidence and Impact, McMaster University Hamilton, Ontario, Canada
| | - Nikhita Singhal
- Undergraduate MD Program , McMaster University, Hamilton, ON
| | - Katherine Ramsden
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada
| | | | | | - Hamnah Shahid
- Arts & Sciences, McMaster University Hamilton, Ontario, Canada
| | - Alannah Hillmer
- Department of Psychology, Neuroscience and Behaviour, McMaster University, Hamilton, ON
| | - Alessia D Elia
- Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, ON
| | - Candice Luo
- Health Sciences, McMaster University Hamilton, Ontario, Canada
| | - Victoria Rogers
- Department of Psychology, Neuroscience and Behaviour, McMaster University, Hamilton, ON
| | | | - Lola Baker-Beal
- St. George's Medical School, St. George's Hospital, Cranmer Terrace, London, UK
| | - Sean Haber
- Undergraduate MD Program , McMaster University, Hamilton, ON
| | - Jihane Henni
- College of Medicine, University of Saskatchewan, Saskatoon, SK
| | - Megan Puckering
- Undergraduate MD Program , McMaster University, Hamilton, ON
| | - Sunny Sun
- Undergraduate MD Program , McMaster University, Hamilton, ON
| | - Kim Ng
- Undergraduate MD Program , McMaster University, Hamilton, ON
| | | | - Natalia Mouravaska
- Mood Disorders Research Unit, St. Joseph's Healthcare Hamilton, Hamilton, ON
| | - M Constantine Samaan
- Division of Pediatric Endocrinology, McMaster University Hamilton, Ontario, Canada
| | - Russell de Souza
- Department of Health Research Methods, Evidence and Impact, McMaster University Hamilton, Ontario, Canada
| | | | - Zainab Samaan
- Department of Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, Canada; Population Genomic Program, Chanchalani Research Centre, McMaster University, Hamilton, Canada; Department of Psychiatry and Behavioral Neurosciences, McMaster University, Hamilton, Canada; Peter Boris Centre for Addictions Research, Canada
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Lai G, Nahar R, Lim T, Kwang X, Liew P, Lim J, Aung Z, Takano A, Lim W, Lau D, Tan W, Ang M, Toh C, Tan B, Devanand A, Too C, Gogna A, Ong B, Koh T, Kanesvaran R, Ng Q, Jain A, Yuan J, Lim T, Lim A, Hillmer A, Zhai W, Iyer G, Tan E, Tam W, Tan D. OA 09.07 Clonality of c-MET Copy Number Gain as a Determinant of Primary TKI Resistance in EGFR-Mutant NSCLC. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.380] [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: 10/18/2022]
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25
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Herold C, Rennekampff H, Krämer R, Hillmer A, Knobloch K, Vogt P. Stammzellangereicherte Fetttransplantation - eine mögliche Therapieoption bei Strahlenulzera? Zentralbl Chir 2011; 138:164-5. [DOI: 10.1055/s-0030-1247476] [Citation(s) in RCA: 2] [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: 10/18/2022]
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26
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Kirov G, Zaharieva I, Georgieva L, Moskvina V, Nikolov I, Cichon S, Hillmer A, Toncheva D, Owen MJ, O'Donovan MC. A genome-wide association study in 574 schizophrenia trios using DNA pooling. Mol Psychiatry 2009; 14:796-803. [PMID: 18332876 DOI: 10.1038/mp.2008.33] [Citation(s) in RCA: 113] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The cost of genome-wide association (GWA) studies can be prohibitively high when large samples are genotyped. We conducted a GWA study on schizophrenia (SZ) and to reduce the cost, we used DNA pooling. We used a parent-offspring trios design to avoid the potential problems of population stratification. We constructed pools from 605 unaffected controls, 574 SZ patients and a third pool from all the parents of the patients. We hybridized each pool eight times on Illumina HumanHap550 arrays. We estimated the allele frequencies of each pool from the averaged intensities of the arrays. The significance level of results in the trios sample was estimated on the basis of the allele frequencies in cases and non-transmitted pseudocontrols, taking into account the technical variability of the data. We selected the highest ranked SNPs for individual genotyping, after excluding poorly performing SNPs and those that showed a trend in the opposite direction in the control pool. We genotyped 63 SNPs in 574 trios and analysed the results with the transmission disequilibrium test. Forty of those were significant at P<0.05, with the best result at P=1.2 x 10(-6) for rs11064768. This SNP is within the gene CCDC60, a coiled-coil domain gene. The third best SNP (P=0.00016) is rs893703, within RBP1, a candidate gene for schizophrenia.
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Affiliation(s)
- G Kirov
- Department of Psychological Medicine, Cardiff University, Henry Wellcome Building, Cardiff, UK.
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27
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Betz RC, König K, Flaquer A, Redler S, Eigelshoven S, Kortüm AK, Hanneken S, Hillmer A, Tüting T, Lambert J, De Weert J, Kruse R, Lutz G, Blaumeiser B, Nöthen MM. The R620W polymorphism in PTPN22 confers general susceptibility for the development of alopecia areata. Br J Dermatol 2007; 158:389-91. [PMID: 18028494 DOI: 10.1111/j.1365-2133.2007.08312.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND The functional R620W (c.1858C>T) variant of the protein tyrosine phosphatase nonreceptor 22 gene (PTPN22) has been associated with a variety of autoimmune disorders. A recent study has suggested that R620W also contributes to the severe form of alopecia areata (AA). OBJECTIVES We sought to replicate the finding of an association between PTPN22 and severe AA. In addition, we wanted to study the effect of PTPN22 on the general risk to develop AA and on other subtypes of AA (mild AA, early/late age at onset, positive/negative family history). METHODS The R620W variant was genotyped in a large case-control sample of Belgian-German origin with 435 patients and 628 controls. RESULTS Significant results were obtained for the overall collective of patients with AA (P=0.007). Subdividing the sample according to severity of AA, family history and age at onset, we detected lowest P-values for patients with the severe form of AA (Pcorr=0.036), with a positive family history (Pcorr=0.042) and with an age at onset<or=20 years (Pcorr=0.048). CONCLUSIONS Our results suggest the R620W variant of PTPN22 as a general risk factor in AA with the strongest effect observed among patients with a severe type of AA, a positive family history or an early onset of disease.
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Affiliation(s)
- R C Betz
- Institute of Human Genetics, University of Bonn, Wilhelmstrasse 31, D-53111 Bonn, Germany.
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Cichon S, Anker M, Vogt IR, Rohleder H, Pützstück M, Hillmer A, Farooq SA, Al-Dhafri KS, Ahmad M, Haque S, Rietschel M, Propping P, Kruse R, Nöthen MM. Cloning, genomic organization, alternative transcripts and mutational analysis of the gene responsible for autosomal recessive universal congenital alopecia. Hum Mol Genet 1998; 7:1671-9. [PMID: 9736769 DOI: 10.1093/hmg/7.11.1671] [Citation(s) in RCA: 118] [Impact Index Per Article: 4.5] [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: 11/14/2022] Open
Abstract
Complete or partial congenital absence of hair (congenital alopecia) may occur isolated or with associated defects. The majority of families with isolated congenital alopecia has been reported to follow an autosomal recessive mode of inheritance (MIM 203655). We have previously mapped the gene for autosomal recessive congenital alopecia in a large inbred Pakistani family in which affected persons show complete absence of hair development (universal congenital alopecia) to a 15 cM region on chromosome 8p21-22. Here we report the cloning and characterization of the human homologue of the mouse hairless gene and show that it is located in the critical region on chromosome 8p21-22. Determining the exon-intron structure allowed detailed mutational analysis of DNA samples of patients with universal congenital alopecia. We detected a homozygous missense mutation in the Pakistani family and a homozygous splice donor mutation in a family from Oman. In addition, we show that the human hairless gene undergoes alternative splicing and that at least two isoforms generated by alternative usage of exon 17 are found in human tissues. Interestingly, the isoform containing exon 17 is the predominantly expressed isoform in all tissues but skin, where exclusive expression of the shorter isoform was observed. We speculate that this tissue-specific difference in the proportion of hairless transcripts lacking exon 17 sequences could contribute to the tissue-specific disease phenotype observed in individuals with isolated congenital alopecia.
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Affiliation(s)
- S Cichon
- Institute of Human Genetics, University of Bonn, Wilhelmstrasse 31, 53111 Bonn, Germany
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