Drug-induced Adverse Events

[Stroke prophylaxis in atrial fibrillation : When, how and for whom?]

Wed, 2018-03-21 03:07
Related Articles

[Stroke prophylaxis in atrial fibrillation : When, how and for whom?]

Herz. 2017 Jun;42(4):373-379

Authors: Maurer T, Sohns C

Abstract
In patients suffering from atrial fibrillation (AF), modern antithrombotic therapy and anticoagulation strategies should be individualized based on shared decision making including patient preferences and the absolute and relative risks of stroke and bleeding. Estimation of the individual risk for stroke is still based on the CHA2DS2-VASc score. Based on the most recent guidelines for the management of AF, oral anticoagulation therapy should be considered for men with a CHA2DS2-VASc score ≥1 and women with a score ≥2, balancing the expected stroke reduction, risk of bleeding and patient preference. Both vitamin K antagonists and novel oral anticoagulants (NOAC) are effective for the prevention of stroke in AF. In AF patients treated with NOAC, kidney function should be regularly monitored to refine risk estimation and to enable dose adaptation. As an alternative to oral anticoagulation therapy, left atrial appendage occlusion may be considered for stroke prevention in patients with AF and contraindications for long-term anticoagulant treatment. This article provides a review of the indications and contraindications of modern stroke prophylaxis and discusses the approach to frequent clinical scenarios, such as treatment of patients with an acute coronary syndrome, coronary stent intervention or catheter ablation of AF.

PMID: 28439617 [PubMed - indexed for MEDLINE]

Categories: Literature Watch

Atazanavir Plus Cobicistat: Week 48 and Week 144 Subgroup Analyses of a Phase 3, Randomized, Double-Blind, Active-Controlled Trial.

Wed, 2018-03-21 03:07
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Atazanavir Plus Cobicistat: Week 48 and Week 144 Subgroup Analyses of a Phase 3, Randomized, Double-Blind, Active-Controlled Trial.

Curr HIV Res. 2017;15(3):216-224

Authors: Gallant J, Moyle G, Berenguer J, Shalit P, Cao H, Liu YP, Myers J, Rosenblatt L, Yang L, Szwarcberg J

Abstract
OBJECTIVES: Cobicistat (COBI) enhances atazanavir (ATV) pharmacokinetic parameters similarly to ritonavir (RTV) in both healthy volunteers and HIV-infected adults. Primary efficacy and safety outcomes of this Phase 3, international, randomized, double-blind, double-dummy, active- controlled trial in HIV-1-infected treatment-naïve adults (GS-US-216-0114/NCT01108510) demonstrated that ATV+COBI was non-inferior to ATV+RTV, each in combination with emtricitabine/ tenofovir disoproxil fumarate (FTC/TDF), at Weeks 48 and 144, with high rates of virologic success for both regimens (85.2% and 87.4%, respectively, at Week 48; and 72.1% and 74.1% at Week 144), and with comparable safety and tolerability. Here, we describe virologic response and treatment discontinuation by a wider range of subgroups than previously presented.
METHODS: Subgroup analyses by baseline CD4 count (≤200, 201-350, >350 cells/mm3), baseline HIV-1 RNA level (≤100,000, >100,000 copies/mL), race, sex, and age (<40, ≥40 years) evaluated ATV+COBI versus ATV+RTV univariate odds ratios (ORs) for virologic success (viral load <50 copies/mL, intention-to-treat US Food and Drug Administration Snapshot algorithm) and discontinuation due to adverse events (AEs) at Weeks 48 and 144. Of 692 patients randomized, 344 received ATV+COBI and 348 ATV+RTV.
RESULTS: ATV+COBI versus ATV+RTV ORs for virologic success did not significantly differ by regimen overall at Weeks 48 and 144 (OR 0.90; 95% confidence interval [CI]: 0.64, 1.26) or within subgroups, except in females, for whom ATV+COBI was favored at Week 144 (OR 2.36; 95% CI: 1.02, 5.47). However, there were more discontinuations due to withdrawal of consent and pregnancies in females receiving ATV+RTV versus ATV+COBI. ORs for discontinuation due to AEs did not significantly differ by regimen overall at Weeks 48 and 144 (OR 0.98; 95% CI: 0.61, 1.58) or within subgroups.
CONCLUSION: These findings indicate that both ATV+COBI and ATV+RTV, each with FTC/TDF, are effective and well-tolerated treatment options across a wide demographic range of HIV-infected patients.

PMID: 27774892 [PubMed - indexed for MEDLINE]

Categories: Literature Watch

Efficacy and safety of apatinib in patients with previously treated metastatic colorectal cancer: a real-world retrospective study.

Sat, 2018-03-17 06:47

Efficacy and safety of apatinib in patients with previously treated metastatic colorectal cancer: a real-world retrospective study.

Sci Rep. 2018 Mar 15;8(1):4602

Authors: Gou M, Si H, Zhang Y, Qian N, Wang Z, Shi W, Dai G

Abstract
No definitive treatment strategy has been established for patients with metastatic colorectal cancer (mCRC) who experienced progression after three or more lines of chemotherapy. A total of 36 mCRC patients were enrolled in this retrospective study who received apatinib therapy under non-clinical trial setting after progression in People's liberation army general Hospital from March 2015 and August 2017. Progression free survival (PFS), overall survival (OS), disease control rate (DCR), objective response rate (ORR) and treatment-related adverse events (AEs) were reviewed and evaluated. Five patients achieved partial response (PR), and 25 achieved stable disease (SD), and 6 achieved progression disease (PD), illustrating a DCR of 83.3% and an ORR of 13.9%. Median PFS was 3.82 m and median OS was not reached. The toxicities associated with apatinib were generally acceptable with a total grade 3/4 adverse event incidence of 27.8%. The most common grade 3/4 adverse events were hypertension (n = 4, 11.1%), liver function damage (n = 3, 8.3%) and hand-foot syndrome (n = 2, 5.6%). No drug-related death occurred. Apatinib therapy provides a reasonable option with an acceptable safety profile for Chinese mCRC patients failed to prior chemotherapy.

PMID: 29545575 [PubMed - in process]

Categories: Literature Watch

Prevalence and Management of Symptoms Associated With Statin Therapy in Community Practice: Insights From the PALM (Patient and Provider Assessment of Lipid Management) Registry.

Sat, 2018-03-17 06:47

Prevalence and Management of Symptoms Associated With Statin Therapy in Community Practice: Insights From the PALM (Patient and Provider Assessment of Lipid Management) Registry.

Circ Cardiovasc Qual Outcomes. 2018 Mar;11(3):e004249

Authors: Navar AM, Peterson ED, Li S, Robinson JG, Roger VL, Goldberg AC, Virani S, Wilson PWF, Nanna MG, Lee LV, Elassal J, Wang TY

PMID: 29545393 [PubMed - in process]

Categories: Literature Watch

Sequence symmetry analysis in pharmacovigilance and pharmacoepidemiologic studies.

Sat, 2018-03-17 06:47
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Sequence symmetry analysis in pharmacovigilance and pharmacoepidemiologic studies.

Eur J Epidemiol. 2017 Jul;32(7):567-582

Authors: Lai EC, Pratt N, Hsieh CY, Lin SJ, Pottegård A, Roughead EE, Kao Yang YH, Hallas J

Abstract
Sequence symmetry analysis (SSA) is a method for detecting adverse drug events by utilizing computerized claims data. The method has been increasingly used to investigate safety concerns of medications and as a pharmacovigilance tool to identify unsuspected side effects. Validation studies have indicated that SSA has moderate sensitivity and high specificity and has robust performance. In this review we present the conceptual framework of SSA and discuss advantages and potential pitfalls of the method in practice. SSA is based on analyzing the sequences of medications; if one medication (drug B) is more often initiated after another medication (drug A) than before, it may be an indication of an adverse effect of drug A. The main advantage of the method is that it requires a minimal dataset and is computationally efficient. By design, SSA controls time-constant confounders. However, the validity of SSA may be affected by time-varying confounders, as well as by time trends in the occurrence of exposure or outcome events. Trend effects may be adjusted by modeling the expected sequence ratio in the absence of a true association. There is a potential for false positive or negative results and careful consideration should be given to potential sources of bias when interpreting the results of SSA studies.

PMID: 28698923 [PubMed - indexed for MEDLINE]

Categories: Literature Watch

Phase II Study of Modified Carboplatin Plus Weekly Nab-Paclitaxel in Elderly Patients with Non-Small Cell Lung Cancer: North Japan Lung Cancer Study Group Trial 1301.

Sat, 2018-03-17 06:47
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Phase II Study of Modified Carboplatin Plus Weekly Nab-Paclitaxel in Elderly Patients with Non-Small Cell Lung Cancer: North Japan Lung Cancer Study Group Trial 1301.

Oncologist. 2017 Jun;22(6):640-e59

Authors: Miyauchi E, Inoue A, Usui K, Sugawara S, Maemondo M, Saito H, Fujita Y, Kato T, Suzuki T, Harada T, Watanabe H, Nakagawa T, Ichinose M

Abstract
LESSONS LEARNED: Weekly nanoparticle albumin-bound-paclitaxel (75 mg/m2) in combination with carboplatin (area under the curve 6 mg/mL/min) in elderly patients with previously untreated, advanced non-small cell lung cancer showed favorable efficacy, was well tolerated, and showed less neuropathic toxicity.This modified regimen offers potential for the treatment of elderly patients.
BACKGROUND: The CA031 trial suggested weekly nanoparticle albumin-bound-paclitaxel (nab-PTX) was superior in efficacy to paclitaxel (PTX) once every 3 weeks when combined with carboplatin (CBDCA) for advanced non-small cell lung cancer (NSCLC) patients; a subgroup analysis of elderly patients looked promising. In a multicenter phase II trial, we prospectively evaluated the efficacy and tolerability of modified CBDCA plus weekly nab-PTX for elderly patients with untreated advanced NSCLC.
METHODS: Eligible patients received CBDCA (area under the curve [AUC] 6 mg/mL/min) on day 1 and nab-PTX (75 mg/m2) on days 1, 8, and 15 every 4 weeks. The primary endpoint was an overall response rate (ORR), and secondary endpoints were progression-free survival (PFS), overall survival (OS), and toxicity.
RESULTS: Of 32 patients (median age of 78 years), 84% were male, 56% had stage IV NSCLC, and 56% had squamous cell carcinoma. ORR and disease control rates were 50% (95% confidence interval (CI): 33-67) and 94% (95% CI: 85-100), respectively. Median PFS and OS were 6.4 months (95% CI: 4.8-8.0) and 17.5 months (95% CI: 11.9-23.1), respectively. Grade ≥3 toxicities were neutropenia (47%), leukopenia (38%), anemia (34%), thrombocytopenia (25%), and anorexia (9%). Febrile neutropenia and treatment-related deaths were not observed.
CONCLUSION: Modified CBDCA plus weekly nab-PTX demonstrated significant efficacy and acceptable toxicities in elderly patients with advanced NSCLC.

PMID: 28526722 [PubMed - indexed for MEDLINE]

Categories: Literature Watch

Neurologic Serious Adverse Events Associated with Nivolumab Plus Ipilimumab or Nivolumab Alone in Advanced Melanoma, Including a Case Series of Encephalitis.

Sat, 2018-03-17 06:47
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Neurologic Serious Adverse Events Associated with Nivolumab Plus Ipilimumab or Nivolumab Alone in Advanced Melanoma, Including a Case Series of Encephalitis.

Oncologist. 2017 Jun;22(6):709-718

Authors: Larkin J, Chmielowski B, Lao CD, Hodi FS, Sharfman W, Weber J, Suijkerbuijk KPM, Azevedo S, Li H, Reshef D, Avila A, Reardon DA

Abstract
BACKGROUND: Despite unprecedented efficacy across multiple tumor types, immune checkpoint inhibitor therapy is associated with a unique and wide spectrum of immune-related adverse events (irAEs), including neurologic events ranging from mild headache to potentially life-threatening encephalitis. Here, we summarize neurologic irAEs associated with nivolumab and ipilimumab melanoma treatment, present cases of treatment-related encephalitis, and provide practical guidance on diagnosis and management.
METHODS: We searched a Global Pharmacovigilance and Epidemiology database for neurologic irAEs reported over an 8-year period in patients with advanced melanoma receiving nivolumab with or without ipilimumab from 12 studies sponsored by Bristol-Myers Squibb. Serious neurologic irAEs were reviewed, and relationship to nivolumab or ipilimumab was assigned.
RESULTS: In our search of 3,763 patients, 35 patients (0.93%) presented with 43 serious neurologic irAEs, including neuropathy (n = 22), noninfective meningitis (n = 5), encephalitis (n = 6), neuromuscular disorders (n = 3), and nonspecific adverse events (n = 7). Study drug was discontinued (n = 20), interrupted (n = 8), or unchanged (n = 7). Most neurologic irAEs resolved (26/35 patients; 75%). Overall, median time to onset was 45 days (range 1-170) and to resolution was 32 days (2-809+). Median time to onset of encephalitis was 55.5 days (range 18-297); four cases resolved and one was fatal.
CONCLUSION: Both oncologists and neurologists need to be aware of signs and symptoms of serious but uncommon neurologic irAEs associated with checkpoint inhibitors. Prompt diagnosis and management using an established algorithm are critical to minimize serious complications from these neurologic irAEs.
IMPLICATIONS FOR PRACTICE: With increasing use of checkpoint inhibitors in cancer, practicing oncologists need to be aware of the potential risk of neurologic immune-related adverse events and be able to provide prompt treatment of this uncommon, but potentially serious, class of adverse events. We summarize neurologic adverse events related to nivolumab alone or in combination with ipilimumab in patients with advanced melanoma from 12 studies and examine in depth 6 cases of encephalitis. We also provide input and guidance on the existing neurologic adverse events management algorithm for nivolumab and ipilimumab.

PMID: 28495807 [PubMed - indexed for MEDLINE]

Categories: Literature Watch

Phase I Dose-Escalation Study of Ramucirumab in Chinese Patients with Advanced Solid Tumors.

Sat, 2018-03-17 06:47
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Phase I Dose-Escalation Study of Ramucirumab in Chinese Patients with Advanced Solid Tumors.

Oncologist. 2017 Jun;22(6):638-e56

Authors: Cao J, Ji D, Chen Z, Shen W, Wang J, Li B, Chi H, Long A, Gao L, Li J

Abstract
LESSONS LEARNED: Ramucirumab was well tolerated in Chinese patients with advanced solid tumors, and adverse events were manageable in this study.Pharmacokinetics characteristics in Chinese patients were similar to those in other populations. Immunogenicity was not detected.No efficacy conclusion could be drawn, and further randomized studies are warranted.
BACKGROUND: This single-arm, nonrandomized, open-label, dose-escalation, phase I study was designed to evaluate the safety, tolerability, and pharmacokinetics (PK) of ramucirumab in Chinese patients with advanced solid tumors that were resistant to standard therapy or no standard therapy was available.
METHODS: Dose escalation was a 3 + 3 design, with expansion in Cohorts 2 and 3 for PK. Ramucirumab was given intravenously at three different dosages: 6 mg/kg every 2 weeks, 10 mg/kg every 3 weeks, and 8 mg/kg every 2 weeks. Safety analyses included all patients. PK, immunogenicity, and antitumor activity were also assessed.
RESULTS: Among 28 patients treated, 2 experienced dose-limiting toxicity, possibly related to ramucirumab. No maximum tolerated dose was determined. All patients experienced at least one treatment-emergent adverse event. Grade ≥3 adverse event was reported for 53.6% (n = 15) of patients. PK analyses indicated that ramucirumab had low clearance, small volume of distribution, and long half-life in Chinese patients, as in other populations. Immunogenicity was not detected. No patient had complete/partial response, and 64.3% (n = 18) had stable disease with a median duration of 5.55 months (95% confidence interval: 3.38-7.13 months).
CONCLUSION: Ramucirumab appeared to be well tolerated in Chinese patients with advanced solid tumors. PK characteristics in Chinese patients were similar to those in other populations.

PMID: 28465370 [PubMed - indexed for MEDLINE]

Categories: Literature Watch

Everolimus Plus Exemestane in Advanced Breast Cancer: Safety Results of the BALLET Study on Patients Previously Treated Without and with Chemotherapy in the Metastatic Setting.

Sat, 2018-03-17 06:47
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Everolimus Plus Exemestane in Advanced Breast Cancer: Safety Results of the BALLET Study on Patients Previously Treated Without and with Chemotherapy in the Metastatic Setting.

Oncologist. 2017 Jun;22(6):648-654

Authors: Generali D, Montemurro F, Bordonaro R, Mafodda A, Romito S, Michelotti A, Piovano P, Ionta MT, Bighin C, Sartori D, Frassoldati A, Cazzaniga ME, Riccardi F, Testore F, Vici P, Barone CA, Schirone A, Piacentini F, Nolè F, Molino A, Latini L, Simoncini EL, Roila F, Cognetti F, Nuzzo F, Foglietta J, Minisini AM, Goffredo F, Portera G, Ascione G, Mariani G

Abstract
BACKGROUND: The BALLET study was an open-label, multicenter, expanded access study designed to allow treatment with everolimus plus exemestane in postmenopausal women with hormone receptor-positive metastatic breast cancer progressed following prior endocrine therapy. A post hoc analysis to evaluate if previous chemotherapy in the metastatic setting affects the safety profile of the combination regimen of everolimus and exemestane was conducted on the Italian subset, as it represented the major part of the patients enrolled (54%).
PATIENTS AND METHODS: One thousand one hundred and fifty-one Italian patients were included in the present post hoc analysis, which focused on two sets of patients: patients who never received chemotherapy in the metastatic setting (36.1%) and patients who received at least one chemotherapy treatment in the metastatic setting (63.9%).
RESULTS: One thousand one hundred and sixteen patients (97.0%) prematurely discontinued the study drug, and the main reasons reported were disease progression (39.1%), local reimbursement of everolimus (31.1%), and adverse events (AEs) (16.1%). The median duration of study treatment exposure was 139.5 days for exemestane and 135.0 days for everolimus. At least one AE was experienced by 92.5% of patients. The incidence of everolimus-related AEs was higher (83.9%) when compared with those that occurred with exemestane (29.1%), and the most commonly reported everolimus-related AE was stomatitis (51.3%). However, no significant difference in terms of safety related to the combination occurred between patients without and with chemotherapy in the metastatic setting.
CONCLUSION: Real-life data of the Italian patients BALLET-related cohort were an adequate setting to state that previous chemotherapy did not affect the safety profile of the combination regimen of everolimus and exemestane.
IMPLICATIONS FOR PRACTICE: With the advent of new targeted agents for advanced or metastatic breast cancer, multiple lines of therapy may be possible, and components of the combined regimens can overlap from one line to another. Thus, it is important to assess even the potential of cumulative and additive toxic effects among the drugs. Previous chemotherapy did not affect the safety profile of the combination regimen of everolimus and exemestane. The continuous monitoring of the safety signals of this drug combination from general clinical practice is important, in particular for stomatitis.

PMID: 28432226 [PubMed - indexed for MEDLINE]

Categories: Literature Watch

Safety issues of compounds acting on adenosinergic signalling.

Sat, 2018-03-17 06:47
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Safety issues of compounds acting on adenosinergic signalling.

J Pharm Pharmacol. 2017 Jul;69(7):790-806

Authors: Schmidt J, Ferk P

Abstract
OBJECTIVES: Much research has been performed on the field of identifying the roles of adenosine and adenosinergic signalling, but a relatively low number of marketing authorizations have been granted for adenosine receptor (AdR) ligands. In part, this could be related to their safety issues; therefore, our aim was to examine the toxicological and adverse effects data of different compounds acting on adenosinergic signalling, including different AdR ligands and compounds resembling the structure of adenosine. We also wanted to present recent pharmaceutical developments of experimental compounds that showed promising results in clinical trial setting.
KEY FINDINGS: Safety issues of compounds modulating adenosinergic signalling were investigated, and different mechanisms were presented. Structurally different classes of compounds act on AdRs, the most important being adenosine, adenosine derivatives and other non-nucleoside compounds. Many of them are either not selective enough or are targeting other targets of adenosinergic signalling such as metabolizing enzymes that regulate adenosine levels. Many other targets are also involved that are not part of adenosinergic signalling system such as GABA receptors, different channels, enzymes and others. Some synthetic AdR ligands even showed to be genotoxic.
SUMMARY: Current review presents safety data of adenosine, adenosine derivatives and other non-nucleoside compounds that modulate adenosinergic signalling. We have presented different mechanisms that participate to an adverse effect or toxic outcome. A separate section also deals with possible organ-specific toxic effects on different in-vitro and in-vivo models.

PMID: 28397249 [PubMed - indexed for MEDLINE]

Categories: Literature Watch

Tumor-Specific Uptake of Fluorescent Bevacizumab-IRDye800CW Microdosing in Patients with Primary Breast Cancer: A Phase I Feasibility Study.

Sat, 2018-03-17 06:47
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Tumor-Specific Uptake of Fluorescent Bevacizumab-IRDye800CW Microdosing in Patients with Primary Breast Cancer: A Phase I Feasibility Study.

Clin Cancer Res. 2017 Jun 01;23(11):2730-2741

Authors: Lamberts LE, Koch M, de Jong JS, Adams ALL, Glatz J, Kranendonk MEG, Terwisscha van Scheltinga AGT, Jansen L, de Vries J, Lub-de Hooge MN, Schröder CP, Jorritsma-Smit A, Linssen MD, de Boer E, van der Vegt B, Nagengast WB, Elias SG, Oliveira S, Witkamp AJ, Mali WPTM, Van der Wall E, van Diest PJ, de Vries EGE, Ntziachristos V, van Dam GM

Abstract
Purpose: To provide proof of principle of safety, breast tumor-specific uptake, and positive tumor margin assessment of the systemically administered near-infrared fluorescent tracer bevacizumab-IRDye800CW targeting VEGF-A in patients with breast cancer.Experimental Design: Twenty patients with primary invasive breast cancer eligible for primary surgery received 4.5 mg bevacizumab-IRDye800CW as intravenous bolus injection. Safety aspects were assessed as well as tracer uptake and tumor delineation during surgery and ex vivo in surgical specimens using an optical imaging system. Ex vivo multiplexed histopathology analyses were performed for evaluation of biodistribution of tracer uptake and coregistration of tumor tissue and healthy tissue.Results: None of the patients experienced adverse events. Tracer levels in primary tumor tissue were higher compared with those in the tumor margin (P < 0.05) and healthy tissue (P < 0.0001). VEGF-A tumor levels also correlated with tracer levels (r = 0.63, P < 0.0002). All but one tumor showed specific tracer uptake. Two of 20 surgically excised lumps contained microscopic positive margins detected ex vivo by fluorescent macro- and microscopy and confirmed at the cellular level.Conclusions: Our study shows that systemic administration of the bevacizumab-IRDye800CW tracer is safe for breast cancer guidance and confirms tumor and tumor margin uptake as evaluated by a systematic validation methodology. The findings are a step toward a phase II dose-finding study aimed at in vivo margin assessment and point to a novel drug assessment tool that provides a detailed picture of drug distribution in the tumor tissue. Clin Cancer Res; 23(11); 2730-41. ©2016 AACR.

PMID: 28119364 [PubMed - indexed for MEDLINE]

Categories: Literature Watch

[Global intervention in the polymedicated patient].

Sat, 2018-03-17 06:47
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[Global intervention in the polymedicated patient].

Gac Sanit. 2016 Sep-Oct;30(5):402

Authors: Rodríguez Del Río E, Martínez Agüero M, Arias Fernández L, Martín-Sánchez FJ

PMID: 27342617 [PubMed - indexed for MEDLINE]

Categories: Literature Watch

Randomized, dose-ranging safety trial of cannabidiol in Dravet syndrome.

Fri, 2018-03-16 06:17

Randomized, dose-ranging safety trial of cannabidiol in Dravet syndrome.

Neurology. 2018 Mar 14;:

Authors: Devinsky O, Patel AD, Thiele EA, Wong MH, Appleton R, Harden CL, Greenwood S, Morrison G, Sommerville K, GWPCARE1 Part A Study Group

Abstract
OBJECTIVE: To evaluate the safety and preliminary pharmacokinetics of a pharmaceutical formulation of purified cannabidiol (CBD) in children with Dravet syndrome.
METHODS: Patients aged 4-10 years were randomized 4:1 to CBD (5, 10, or 20 mg/kg/d) or placebo taken twice daily. The double-blind trial comprised 4-week baseline, 3-week treatment (including titration), 10-day taper, and 4-week follow-up periods. Completers could continue in an open-label extension. Multiple pharmacokinetic blood samples were taken on the first day of dosing and at end of treatment for measurement of CBD, its metabolites 6-OH-CBD, 7-OH-CBD, and 7-COOH-CBD, and antiepileptic drugs (AEDs; clobazam and metabolite N-desmethylclobazam [N-CLB], valproate, levetiracetam, topiramate, and stiripentol). Safety assessments were clinical laboratory tests, physical examinations, vital signs, ECGs, adverse events (AEs), seizure frequency, and suicidality.
RESULTS: Thirty-four patients were randomized (10, 8, and 9 to the 5, 10, and 20 mg/kg/d CBD groups, and 7 to placebo); 32 (94%) completed treatment. Exposure to CBD and its metabolites was dose-proportional (AUC0-t). CBD did not affect concomitant AED levels, apart from an increase in N-CLB (except in patients taking stiripentol). The most common AEs on CBD were pyrexia, somnolence, decreased appetite, sedation, vomiting, ataxia, and abnormal behavior. Six patients taking CBD and valproate developed elevated transaminases; none met criteria for drug-induced liver injury and all recovered. No other clinically relevant safety signals were observed.
CONCLUSIONS: Exposure to CBD and its metabolites increased proportionally with dose. An interaction with N-CLB was observed, likely related to CBD inhibition of cytochrome P450 subtype 2C19. CBD resulted in more AEs than placebo but was generally well-tolerated.
CLASSIFICATION OF EVIDENCE: This study provides Class I evidence that for children with Dravet syndrome, CBD resulted in more AEs than placebo but was generally well-tolerated.

PMID: 29540584 [PubMed - as supplied by publisher]

Categories: Literature Watch

Antipsychotic reduction and/or cessation and antipsychotics as specific treatments for tardive dyskinesia.

Fri, 2018-03-16 06:17
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Antipsychotic reduction and/or cessation and antipsychotics as specific treatments for tardive dyskinesia.

Cochrane Database Syst Rev. 2018 02 06;2:CD000459

Authors: Bergman H, Rathbone J, Agarwal V, Soares-Weiser K

Abstract
BACKGROUND: Since the 1950s antipsychotic medication has been extensively used to treat people with chronic mental illnesses such as schizophrenia. These drugs, however, have also been associated with a wide range of adverse effects, including movement disorders such as tardive dyskinesia (TD) - a problem often seen as repetitive involuntary movements around the mouth and face. Various strategies have been examined to reduce a person's cumulative exposure to antipsychotics. These strategies include dose reduction, intermittent dosing strategies such as drug holidays, and antipsychotic cessation.
OBJECTIVES: To determine whether a reduction or cessation of antipsychotic drugs is associated with a reduction in TD for people with schizophrenia (or other chronic mental illnesses) who have existing TD. Our secondary objective was to determine whether the use of specific antipsychotics for similar groups of people could be a treatment for TD that was already established.
SEARCH METHODS: We updated previous searches of Cochrane Schizophrenia's study-based Register of Trials including the registers of clinical trials (16 July 2015 and 26 April 2017). We searched references of all identified studies for further trial citations. We also contacted authors of trials for additional information.
SELECTION CRITERIA: We included reports if they assessed people with schizophrenia or other chronic mental illnesses who had established antipsychotic-induced TD, and had been randomly allocated to (a) antipsychotic maintenance versus antipsychotic cessation (placebo or no intervention), (b) antipsychotic maintenance versus antipsychotic reduction (including intermittent strategies), (c) specific antipsychotics for the treatment of TD versus placebo or no intervention, and (d) specific antipsychotics versus other antipsychotics or versus any other drugs for the treatment of TD.
DATA COLLECTION AND ANALYSIS: We independently extracted data from these trials and estimated risk ratios (RR) or mean differences (MD), with 95% confidence intervals (CI). We assumed that people who dropped out had no improvement.
MAIN RESULTS: We included 13 RCTs with 711 participants; eight of these studies were newly included in this 2017 update. One trial is ongoing.There was low-quality evidence of a clear difference on no clinically important improvement in TD favouring switch to risperidone compared with antipsychotic cessation (with placebo) (1 RCT, 42 people, RR 0.45 CI 0.23 to 0.89, low-quality evidence). Because evidence was of very low quality for antipsychotic dose reduction versus antipsychotic maintenance (2 RCTs, 17 people, RR 0.42 95% CI 0.17 to 1.04, very low-quality evidence), and for switch to a new antipsychotic versus switch to another new antipsychotic (5 comparisons, 5 RCTs, 140 people, no meta-analysis, effects for all comparisons equivocal), we are uncertain about these effects. There was low-quality evidence of a significant difference on extrapyramidal symptoms: use of antiparkinsonism medication favouring switch to quetiapine compared with switch to haloperidol (1 RCT, 45 people, RR 0.45 CI 0.21 to 0.96, low-quality evidence). There was no evidence of a difference for switch to risperidone or haloperidol compared with antipsychotic cessation (with placebo) (RR 1 RCT, 48 people, RR 2.08 95% CI 0.74 to 5.86, low-quality evidence) and switch to risperidone compared with switch to haloperidol (RR 1 RCT, 37 people, RR 0.68 95% CI 0.34 to 1.35, very low-quality evidence).Trials also reported on secondary outcomes such as other TD symptom outcomes, other adverse events outcomes, mental state, and leaving the study early, but the quality of the evidence for all these outcomes was very low due mainly to small sample sizes, very wide 95% CIs, and risk of bias. No trials reported on social confidence, social inclusion, social networks, or personalised quality of life, outcomes that we designated as being important to patients.
AUTHORS' CONCLUSIONS: Limited data from small studies using antipsychotic reduction or specific antipsychotic drugs as treatments for TD did not provide any convincing evidence of the value of these approaches. There is a need for larger trials of a longer duration to fully investigate this area.

PMID: 29409162 [PubMed - indexed for MEDLINE]

Categories: Literature Watch

The protective effect of thymoquinone over olanzapine-induced side effects in liver, and metabolic side effects.

Fri, 2018-03-16 06:17
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The protective effect of thymoquinone over olanzapine-induced side effects in liver, and metabolic side effects.

Bratisl Lek Listy. 2017;118(10):618-625

Authors: Bilgic S, Tastemir Korkmaz D, Azirak S, Guvenc AN, Kocaman N, Ozer MK

Abstract
OBJECTIVES: The aim of the study was to investigate the possible protective qualities of thymoquinone (TQ) against the side-effects of olanzapine (OLZ) in an experimental model in rat liver with histologic and biochemical assessments.
METHODS: Experimental procedures were performed on 35 female Sprague Dawley rats. Rats were randomly divided into five groups as: group 1: control; group 2: OLZ; group 3: OLZ+TQ-1; group 4: OLZ+TQ-2; and group 5: OLZ+TQ-3.
RESULTS: The results showed that a 2‑week administration of OLZ (4 mg/kg, once a day for the first week, 8 mg/kg once a day for the second week, p.o.) and treatment with TQ (25, 50, 100 mg/kg, once daily, p.o.) significantly reduced weight gain induced by OLZ. In addition, TQ increased the total antioxidant status (TAS), high-density lipoprotein cholesterol (HDL), insulin levels and decreased serum oxidative stress index (OSI), total oxidant status (TOS), alanine aminotransferase (ALT), aspartate aminotransferase (AST), gamma glutamyl transpeptidase (GGT), low density lipoprotein cholesterol (LDL), glucose, triglycerides (TG) and total cholesterol (CH) levels significantly (p < 0.05).
CONCLUSION: This study revealed that treatment with TQ might protect liver tissue against the side-effects of OLZ. TQ could be an effective course of therapy to enhance therapeutic efficacy (Tab. 4, Fig. 4, Ref. 47).

PMID: 29198130 [PubMed - indexed for MEDLINE]

Categories: Literature Watch

Evaluation of different recall periods for the US National Cancer Institute's PRO-CTCAE.

Fri, 2018-03-16 06:17
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Evaluation of different recall periods for the US National Cancer Institute's PRO-CTCAE.

Clin Trials. 2017 Jun;14(3):255-263

Authors: Mendoza TR, Dueck AC, Bennett AV, Mitchell SA, Reeve BB, Atkinson TM, Li Y, Castro KM, Denicoff A, Rogak LJ, Piekarz RL, Cleeland CS, Sloan JA, Schrag D, Basch E

Abstract
AIMS: The US National Cancer Institute recently developed the PRO-CTCAE (Patient-Reported Outcomes version of the Common Terminology Criteria for Adverse Events). PRO-CTCAE is a library of questions for clinical trial participants to self-report symptomatic adverse events (e.g. nausea). The objective of this study is to inform evidence-based selection of a recall period when PRO-CTCAE is included in a trial. We evaluated differences between 1-, 2-, 3-, and 4-week recall periods, using daily reporting as the reference.
METHODS: English-speaking patients with cancer receiving chemotherapy and/or radiotherapy were enrolled at four US cancer centers and affiliated community clinics. Participants completed 27 PRO-CTCAE items electronically daily for 28 days, and then weekly over 4 weeks, using 1-, 2-, 3-, and 4-week recall periods. For each recall period, mean differences, effect sizes, and intraclass correlation coefficients were calculated to evaluate agreement between the maximum of daily ratings and the corresponding ratings obtained using longer recall periods (e.g. maximum of daily scores over 7 days vs 1-week recall). Analyses were repeated using the average of daily scores within each recall period rather than the maximum of daily scores.
RESULTS: A total of 127 subjects completed questionnaires (57% male; median age: 57). The median of the 27 mean differences in scores on the PRO-CTCAE 5-point response scale comparing the maximum daily versus the longer recall period (and corresponding effect size) was -0.20 (-0.20) for 1-week recall, -0.36 (-0.31) for 2-week recall, -0.45 (-0.39) for 3-week recall, and -0.47 (-0.40) for 4-week recall. The median intraclass correlation across 27 items between the maximum of daily ratings and the corresponding longer recall ratings for 1-week recall was 0.70 (range: 0.54-0.82), for 2-week recall was 0.74 (range: 0.58-0.83), for 3-week recall was 0.72 (range: 0.61-0.84), and for 4-week recall was 0.72 (range: 0.64-0.86). Similar results were observed for all analyses using the average of daily scores rather than the maximum of daily scores.
CONCLUSION: A 1-week recall corresponds best to daily reporting. Although intraclass correlations remain stable over time, there are small but progressively larger differences between daily and longer recall periods at 2, 3, and 4 weeks, respectively. The preferred recall period for the PRO-CTCAE is the past 7 days, although investigators may opt for recall periods of 2, 3, or 4 weeks with an understanding that there may be some information loss.

PMID: 28545337 [PubMed - indexed for MEDLINE]

Categories: Literature Watch

Role of taxanes in chemotherapy-related cognitive impairment: A prospective longitudinal study.

Fri, 2018-03-16 06:17
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Role of taxanes in chemotherapy-related cognitive impairment: A prospective longitudinal study.

Breast Cancer Res Treat. 2017 Jul;164(1):179-187

Authors: Cerulla N, Arcusa À, Navarro JB, Garolera M, Enero C, Chico G, Fernández-Morales L

Abstract
PURPOSE: The aim of this study is to elucidate the role of taxanes on cognition when they are administered as a part of the treatment with a fluorouracil, epirubicin and cyclophosphamide (FEC) regimen for breast cancer (BC).
METHODS: Two groups of women (n = 51) with a novel diagnostic of BC that were treated with a combination of FEC alone (6 cycles of FEC) or with taxanes (4 cycles of FEC plus 8 cycles of taxanes) were compared at three moments: before chemotherapy, after its completion (short-term evaluation) and at a mean of 74.5 weeks from baseline as a long-term evaluation.
RESULTS: Both groups showed worsening in tests of attention and executive functions on the short-term assessment, with the group treated with taxanes showing more number of affected cognitive measures at this time point, including verbal learning and speed measures. At the long-term evaluation, cognitive dysfunction was still found in attention and executive functions in both groups.
CONCLUSION: Our results suggest that chemotherapy for BC with a FEC regimen can have a negative effect on cognition. Acute deficits seem to be larger when taxanes are added, but treatment seems to affect cognition also at long term.

PMID: 28421379 [PubMed - indexed for MEDLINE]

Categories: Literature Watch

Frailty and long-term mortality of older breast cancer patients: CALGB 369901 (Alliance).

Fri, 2018-03-16 06:17
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Frailty and long-term mortality of older breast cancer patients: CALGB 369901 (Alliance).

Breast Cancer Res Treat. 2017 Jul;164(1):107-117

Authors: Mandelblatt JS, Cai L, Luta G, Kimmick G, Clapp J, Isaacs C, Pitcher B, Barry W, Winer E, Sugarman S, Hudis C, Muss H, Cohen HJ, Hurria A

Abstract
PURPOSE: Breast cancer patients aged 65+ ("older") vary in frailty status. We tested whether a deficits accumulation frailty index predicted long-term mortality.
METHODS: Older patients (n = 1280) with non-metastatic, invasive breast cancer were recruited from 78 Alliance sites from 2004 to 2011, with follow-up to 2015. Frailty categories (robust, pre-frail, and frail) were based on 35 baseline illness and function items. Cox proportional hazards and competing risk models were used to calculate all-cause and breast cancer-specific mortality for up to 7 years, respectively. Potential covariates included demographic, psychosocial, and clinical factors, diagnosis year, and care setting.
RESULTS: Patients were 65-91 years old. Most (76.6%) were robust; 18.3% were pre-frail, and 5.1% frail. Robust patients tended to receive more chemotherapy ± hormonal therapy (vs. hormonal) than pre-frail or frail patients (45% vs. 37 and 36%, p = 0.06), and had the highest adherence to hormonal therapy. The adjusted hazard ratios for all-cause mortality (n = 209 deaths) were 1.7 (95% CI 1.2-2.4) and 2.4 (95% CI 1.5-4.0) for pre-frail and frail versus robust women, respectively, with an absolute mortality difference of 23.5%. The adjusted hazard of breast cancer death (n-99) was 3.1 (95% CI 1.6-5.8) times higher for frail versus robust patients (absolute difference of 14%). Treatment differences did not account for the relationships between frailty and mortality.
CONCLUSIONS: Most older breast cancer patients are robust and could consider chemotherapy where otherwise indicated. Patients who are frail or pre-frail have elevated long-term all-cause and breast cancer mortality. Frailty indices could be useful for treatment decision-making and care planning with older patients.

PMID: 28364214 [PubMed - indexed for MEDLINE]

Categories: Literature Watch

("drug-induced" OR "drug-related") AND ("adverse events" OR "side effects" OR "side-effects"); +16 new citations

Thu, 2018-03-15 14:57

16 new pubmed citations were retrieved for your search. Click on the search hyperlink below to display the complete search results:

("drug-induced" OR "drug-related") AND ("adverse events" OR "side effects" OR "side-effects")

These pubmed results were generated on 2018/03/15

PubMed comprises more than millions of citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full-text content from PubMed Central and publisher web sites.

Categories: Literature Watch

("drug-induced" OR "drug-related") AND ("adverse events" OR "side effects" OR "side-effects"); +16 new citations

Thu, 2018-03-15 06:00

16 new pubmed citations were retrieved for your search. Click on the search hyperlink below to display the complete search results:

("drug-induced" OR "drug-related") AND ("adverse events" OR "side effects" OR "side-effects")

These pubmed results were generated on 2018/03/15

PubMed comprises more than millions of citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full-text content from PubMed Central and publisher web sites.

Categories: Literature Watch

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