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1.
J Plast Reconstr Aesthet Surg ; 87: 41-45, 2023 12.
Article in English | MEDLINE | ID: mdl-37804646

ABSTRACT

OBJECTIVES: To assess the expected duration of exposure of United Kingdom urology and plastic surgery trainees to the provision of gender affirming healthcare to transgender patients. This observational, cross-sectional survey asked UK training programme directors (TPDs) to report the volume of training in gender affirming care of transgender patients that urology and plastic surgery trainees are expected to receive. METHODS: A Google Form online questionnaire was distributed to each regional TPD in the UK both for plastic surgery and urology. RESULTS: Eleven of 14 TPDs in plastic surgery and 13 of 19 urology TPDs completed the survey with responses representing 487 trainees. The total estimated exposure of UK trainees to any aspect of gender affirming healthcare was a median of one hour of training per trainee per year (clinical or didactic). Thirteen deaneries reported that trainees received some (didactic or clinical) training in transgender care each year. Only eight of these deaneries reported provision of direct clinical training. The remaining eleven deaneries reported that trainees received no training in gender affirming care. No training was expected to take place for any trainee of either speciality within multi-disciplinary team meetings or in masculinising genital surgery. CONCLUSION: The above evidence demonstrates the low exposure of plastic surgery and urology registrar trainees to gender affirming care during their training years in the UK.


Subject(s)
Surgery, Plastic , Transgender Persons , Transsexualism , Urology , Humans , Cross-Sectional Studies , Surgery, Plastic/education , United Kingdom , Urology/education
2.
World J Urol ; 41(9): 2437-2442, 2023 Sep.
Article in English | MEDLINE | ID: mdl-37493708

ABSTRACT

PURPOSE: To present the seven-year experience of a multi-component and interactive module on female, neurological and urodynamic urology (FNUU) training at the UK National Urology Simulation Bootcamp Course (USBC) and demonstrate trainee satisfaction and competency progression. METHODS: During the week-long USBC, a four-hour module on FNUU was designed which consisted of short interactive presentations with an emphasis on practical stations in urodynamics, intravesical botulinum toxin injection, urethral bulking injection, female pelvic examination and, initially, mid-urethral tapes (subsequently replaced with percutaneous sacral nerve evaluation). The trainee's level of knowledge, operative experience and confidence were assessed pre- and post-course. The practical assessment consisted of preparation and intravesical administration of botulinum toxin, female pelvic examination, urodynamic trace interpretation or mid-urethral tape simulation. Trainee feedback was also collected. RESULTS: Two-hundred sixty-one newly appointed urology trainees participated in the USBC during this period. A high level of satisfaction was constantly reported. The highest rated session was urethral bulking with 72% being very satisfied, followed by Botox and urodynamics. The final assessment showed 70% had achieved level 4 competency in cystoscopy and Botox. Qualitative feedback was also obtained. CONCLUSION: To our knowledge, this is the first module of its kind, and it shows that it is feasible to develop, implement and evaluate an introductory curriculum into FNUU that is reproducible over a 7-year period with very positive feedback.


Subject(s)
Botulinum Toxins, Type A , Simulation Training , Urology , Humans , Female , Urology/education , Urodynamics , Clinical Competence , Curriculum
3.
Eur Urol Focus ; 9(1): 35-41, 2023 01.
Article in English | MEDLINE | ID: mdl-36396559

ABSTRACT

CONTEXT: Gonadotropin-releasing hormone analogues (GnRHAs) delay the progression of puberty in transgender and nonbinary (TGNB) adolescents and reduce the impact of dysphoria due to ongoing physical development. The intervention remains contentious despite growing evidence to support this practice. OBJECTIVE: To stimulate discussion on this topical issue in the urological and gynaecological community given potential ramifications for future fertility, physical development, and options for gender affirmation surgery (GAS). EVIDENCE ACQUISITION: We conducted searches of the MEDLINE (from 1946) and Embase (from 1974) databases for the benefits and potential challenges of hormone blockade in TGNB adolescents on February 1, 2022. Evidence with a primary focus on clinical issues of interest to urologists and gynaecologists was objectively synthesised and reported. EVIDENCE SYNTHESIS: The onset of puberty represents a period of distress for TGNB adolescents as secondary sexual characteristics develop. GnRHAs are prescribed to inhibit sex hormone production, but the decision to treat should be balanced against the known (and unknown) adverse effects. Fertility preservation is more likely to be successful if GnRHA treatment is delayed for as long as possible. Some adolescents may decide to stop GnRHA use to harvest spermatozoa or oocytes before starting gender-affirming hormone treatment. Transfeminine individuals should consider that options for genital GAS may become more limited, as vaginoplasty with penile skin inversion requires an adequate stretched penile length. Transmasculine individuals may no longer require chest reconstruction for breast development. CONCLUSIONS: Offers of GnRHA treatment to TGNB adolescents should be balanced by careful preparation and counselling. Urologists and gynaecologists can complement the expertise of specialist psychosocial and adolescent endocrinology teams, and should be involved early in and throughout the treatment pathway to maximise future functional and surgical outcomes. PATIENT SUMMARY: Puberty blockers for transgender and nonbinary adolescents have benefits, but timing is important to preserve fertility and surgical options.


Subject(s)
Gender Dysphoria , Sex Reassignment Surgery , Transgender Persons , Male , Humans , Sexual Maturation , Gonadotropin-Releasing Hormone/therapeutic use
4.
Pharmaceutics ; 14(6)2022 Jun 16.
Article in English | MEDLINE | ID: mdl-35745857

ABSTRACT

BACKGROUND: HIV-1 pre-exposure prophylaxis (PrEP) has focused predominantly on protective efficacy in receptive sex, with limited research on the dosing requirements for insertive sex. We pre-clinically assessed the ex vivo pharmacokinetic-pharmacodynamic (PK-PD) profile of tenofovir (TFV) and tenofovir alafenamide (TAF) in foreskin tissue. METHODS: Inner and outer foreskin explants were exposed to serial dilutions of TFV or TAF prior to addition of HIV-1BaL at a high (HVT) or a low viral titer (LVT). Infection was assessed by measurement of p24 in foreskin culture supernatants. TFV, TAF and TFV-diphosphate (TFV-DP) concentrations were measured in tissues, culture supernatants and dosing and washing solutions. RESULTS: Dose-response curves were obtained for both drugs, with greater potency observed against LVT. Inhibitory equivalency mimicking oral dosing was defined between 1 mg/mL of TFV and 15 µg/mL of TAF against HVT challenge. Concentrations of TFV-DP in foreskin explants were approximately six-fold higher after ex vivo dosing with TAF than with TFV. Statistically significant negative linear correlations were observed between explant levels of TFV or TFV-DP and p24 concentrations following HVT. CONCLUSIONS: Pre-clinical evaluation of TAF in foreskin explants revealed greater potency than TFV against penile HIV transmission. Clinical evaluation is underway to support this finding.

5.
Indian J Surg ; 84(Suppl 1): 35-44, 2022 Apr.
Article in English | MEDLINE | ID: mdl-34341627

ABSTRACT

Surgical disciplines are popular and training places are competitive to obtain, but trainees report higher levels of burnout than either their non-surgical peers or attending or consultant surgeons. In this review, we critically summarise evidence on trends and changes in burnout over the past decade, contributors to surgical trainee burnout, the personal and professional consequences of burnout and consider the evidence for interventions. There is no evidence for a linear increase in burnout levels in surgeons over the past decade but the impact of the COVID-19 pandemic has yet to be established and is likely to be significant. Working long hours and experiencing stressful interpersonal interactions at work are associated with higher burnout in trainees but feeling more supported by training programmes and receiving workplace supervision are associated with reduced burnout. Burnout is associated with poorer overall mental and physical well-being in surgical trainees and has also been linked with the delivery of less safe patient care in this group. Useful interventions could include mentorship and improving work conditions, but there is a need for more and higher quality studies.

6.
Drug Metab Dispos ; 47(9): 966-973, 2019 09.
Article in English | MEDLINE | ID: mdl-31266752

ABSTRACT

GDC-0810 (Cheeti et al., 2018) is an orally bioavailable, selective estrogen receptor (ER) degrader developed to treat ER-positive breast cancer. A first-in-human (FIH) dose escalation phase I study (n = 41) was conducted to characterize the pharmacokinetics (PK) of GDC-0810 and its two major metabolites. GDC-0810 demonstrated linear PK from 100 to 600 mg given once daily. The mean terminal half-life following a single 600 mg dose was approximately 8 hours. Since GDC-0810 is a potent in vitro inhibitor of organic anion transporting polypeptide (OATP) 1B1/3, the kinetic profile of coproporphyrin I (CPI), a promising endogenous biomarker for OATP1B1/3, was analyzed retrospectively in a subset of the plasma samples collected in the same FIH study. CPI exhibited a GDC-0810 dose-dependent increase, suggesting in vivo inhibition of OATP1B transporters. To quantitatively predict the magnitude of OATP1B-mediated drug-drug interactions (DDIs) with pravastatin (a known OATP1B substrate), the in vivo unbound inhibition constant was first estimated using a one-compartment model, and then incorporated to a physiologically based pharmacokinetic model. The model showed some underestimation of the magnitude of the DDI when compared with a clinical DDI study result, while prediction had a relatively large uncertainty due to the small effect size, limited sample size, and variability in CPI kinetics. In conclusion, this study characterized the pharmacokinetic profiles of GDC-0810 in breast cancer patients and demonstrated the utility of CPI in detecting OATP1B-mediated DDIs of a new molecular entity as early as FIH study. SIGNIFICANCE STATEMENT: Endogenous biomarkers of transporters have recently been shown to be promising tools in evaluating the risk of clinical transporter-mediated DDIs. This is the first study to report a pharmacokinetic interaction between an investigational molecule and a transporter biomarker in a first-in-human study. The observed interaction and model-based analysis and the prediction provide important insights on the novel approach to quantitatively predict transporter-mediated DDIs as early as FIH studies in the clinical development.


Subject(s)
Breast Neoplasms/drug therapy , Cinnamates/pharmacokinetics , Indazoles/pharmacokinetics , Liver-Specific Organic Anion Transporter 1/metabolism , Solute Carrier Organic Anion Transporter Family Member 1B3/metabolism , Administration, Oral , Adult , Aged , Antineoplastic Agents , Biomarkers/analysis , Breast Neoplasms/blood , Breast Neoplasms/pathology , Cinnamates/administration & dosage , Coproporphyrins/analysis , Coproporphyrins/metabolism , Dose-Response Relationship, Drug , Drug Interactions , Feasibility Studies , Female , Half-Life , Humans , Indazoles/administration & dosage , Middle Aged , Receptors, Estrogen/antagonists & inhibitors , Receptors, Estrogen/metabolism
7.
Eur Urol Focus ; 5(3): 340-350, 2019 05.
Article in English | MEDLINE | ID: mdl-31047905

ABSTRACT

BACKGROUND: Clinical evaluation of male lower urinary tract symptoms (MLUTS) in secondary care uses a range of assessments. It is unknown how MLUTS evaluation influences outcome of therapy recommendations and choice, notably urodynamics (UDS; filling cystometry and pressure flow studies). OBJECTIVE: To report participants' sociodemographic and clinical characteristics, and initial diagnostic findings of the Urodynamics for Prostate Surgery Trial; Randomised Evaluation of Assessment Methods (UPSTREAM). UPSTREAM is a randomised controlled trial evaluating whether symptoms are noninferior and surgery rates are lower if UDS is included. DESIGN, SETTING, AND PARTICIPANTS: A total of 820 men (≥18 yr of age) seeking treatment for bothersome LUTS were recruited from 26 National Health Service hospital urology departments. INTERVENTION: Care pathway based on routine, noninvasive tests (control) or routine care plus UDS (intervention arm). OUTCOME MEASUREMENTS AND STATISTICAL ANALYSIS: The primary outcome is International Prostate Symptom Score (IPSS) and the key secondary outcome is surgery rates 18 mo after randomisation. International Consultation on Incontinence Questionnaires were captured for MLUTS, sexual function, and UDS satisfaction. Baseline clinical and patient-reported outcome measures (PROMs), and UDS findings were informally compared between arms. Trends across age groups for urinary and sexual PROMs were evaluated with a Cuzick's test, and questionnaire items were compared using Pearson's correlation coefficient. RESULTS AND LIMITATIONS: Storage LUTS, notably nocturia, and impaired sexual function are prominent in men being assessed for surgery. Sociodemographic and clinical evaluations were similar between arms. Overall mean IPSS and quality of life scores were 18.94 and 4.13, respectively. Trends were found across age groups, with older men suffering from higher rates of incontinence, nocturia, and erectile dysfunction, and younger men suffering from increased daytime frequency and voiding symptoms. Men undergoing UDS testing expressed high satisfaction with the procedure. CONCLUSIONS: Men being considered for surgery have additional clinical features that may affect treatment decision making and outcomes, notably storage LUTS and impaired sexual function. PATIENT SUMMARY: We describe initial assessment findings from a large clinical study of the treatment pathway for men suffering with bothersome urinary symptoms who were referred to hospital for further treatment, potentially including surgery. We report the patient characteristics and diagnostic test results, including symptom questionnaires, bladder diaries, flow rate tests, and urodynamics.


Subject(s)
Lower Urinary Tract Symptoms/diagnosis , Patient Reported Outcome Measures , Prostatectomy , Urodynamics , Age Factors , Aged , Humans , Lower Urinary Tract Symptoms/physiopathology , Lower Urinary Tract Symptoms/surgery , Male , Middle Aged , Patient Satisfaction , Penile Erection , Prostate/surgery , Prostatectomy/methods , Surveys and Questionnaires , Urodynamics/physiology
8.
Br J Clin Pharmacol ; 85(8): 1751-1760, 2019 08.
Article in English | MEDLINE | ID: mdl-30973970

ABSTRACT

AIMS: Navoximod (GDC-0919, NLG-919) is a small molecule inhibitor of indoleamine-2,3-dioxygenase 1 (IDO1), developed to treat the acquired immune tolerance associated with cancer. The primary objectives of this study were to assess navoximod's absolute bioavailability (aBA), determine the mass balance and routes of elimination of [14 C]-navoximod, and characterize navoximod's metabolite profile. METHODS: A phase 1, open-label, two-part study was conducted in healthy volunteers. In Part 1 (aBA), subjects (n = 16) were randomized to receive oral (200 mg tablet) or intravenous (5 mg solution) navoximod in a crossover design with a 5-day washout. In Part 2 (mass balance), subjects (n = 8) were administered [14 C]-navoximod (200 mg/600 µCi) as an oral solution. RESULTS: The aBA of navoximod was estimated to be 55.5%, with a geometric mean (%CV) plasma clearance and volume of distribution of 62.0 L/h (21.0%) and 1120 L (28.4%), respectively. Mean recovery of total radioactivity was 87.8%, with 80.4% detected in urine and the remainder (7.4%) in faeces. Navoximod was extensively metabolized, with unchanged navoximod representing 5.45% of the dose recovered in the urine and faeces. Glucuronidation was identified as the primary route of metabolism, with the major glucuronide metabolite, M28, accounting for 57.5% of the total drug-derived exposure and 59.7% of the administered dose recovered in urine. CONCLUSIONS: Navoximod was well tolerated, quickly absorbed and showed moderate bioavailability, with minimal recovery of the dose as unchanged parent in the urine and faeces. Metabolism was identified as the primary route of clearance and navoximod glucuronide (M28) was the most abundant metabolite in circulation with all other metabolites accounting for <10% of drug-related exposure.


Subject(s)
Imidazoles/pharmacokinetics , Indoleamine-Pyrrole 2,3,-Dioxygenase/antagonists & inhibitors , Indoles/pharmacokinetics , Administration, Intravenous , Administration, Oral , Adult , Biological Availability , Cross-Over Studies , Female , Healthy Volunteers , Humans , Imidazoles/administration & dosage , Indoles/administration & dosage , Intestinal Elimination , Male , Metabolic Clearance Rate , Middle Aged , Neoplasms/drug therapy , Neoplasms/immunology , Renal Elimination , Tumor Escape/drug effects , Young Adult
10.
Clin Cancer Res ; 25(11): 3220-3228, 2019 06 01.
Article in English | MEDLINE | ID: mdl-30770348

ABSTRACT

PURPOSE: IDO1 induces immune suppression in T cells through l-tryptophan (Trp) depletion and kynurenine (Kyn) accumulation in the local tumor microenvironment, suppressing effector T cells and hyperactivating regulatory T cells (Treg). Navoximod is an investigational small-molecule inhibitor of IDO1. This phase I study evaluated safety, tolerability, pharmacokinetics, and pharmacodynamics of navoximod in combination with atezolizumab, a PD-L1 inhibitor, in patients with advanced cancer. PATIENTS AND METHODS: The study consisted of a 3+3 dose-escalation stage (n = 66) and a tumor-specific expansion stage (n = 92). Navoximod was given orally every 12 hours continuously for 21 consecutive days of each cycle with the exception of cycle 1, where navoximod administration started on day -1 to characterize pharmacokinetics. Atezolizumab was administered by intravenous infusion 1,200 mg every 3 weeks on day 1 of each cycle. RESULTS: Patients (n = 157) received navoximod at 6 dose levels (50-1,000 mg) in combination with atezolizumab. The maximum administered dose was 1,000 mg twice daily; the MTD was not reached. Navoximod demonstrated a linear pharmacokinetic profile, and plasma Kyn generally decreased with increasing doses of navoximod. The most common treatment-related AEs were fatigue (22%), rash (22%), and chromaturia (20%). Activity was observed at all dose levels in various tumor types (melanoma, pancreatic, prostate, ovarian, head and neck squamous cell carcinoma, cervical, neural sheath, non-small cell lung cancer, triple-negative breast cancer, renal cell carcinoma, urothelial bladder cancer): 6 (9%) dose-escalation patients achieved partial response, and 10 (11%) expansion patients achieved partial response or complete response. CONCLUSIONS: The combination of navoximod and atezolizumab demonstrated acceptable safety, tolerability, and pharmacokinetics for patients with advanced cancer. Although activity was observed, there was no clear evidence of benefit from adding navoximod to atezolizumab.


Subject(s)
Antineoplastic Combined Chemotherapy Protocols/therapeutic use , B7-H1 Antigen/antagonists & inhibitors , Indoleamine-Pyrrole 2,3,-Dioxygenase/antagonists & inhibitors , Neoplasms/drug therapy , Adult , Aged , Aged, 80 and over , Antibodies, Monoclonal, Humanized/administration & dosage , Antibodies, Monoclonal, Humanized/pharmacokinetics , Antineoplastic Combined Chemotherapy Protocols/adverse effects , Biomarkers, Tumor , Humans , Imidazoles/administration & dosage , Imidazoles/pharmacokinetics , Indoles/administration & dosage , Indoles/pharmacokinetics , Magnetic Resonance Imaging , Middle Aged , Neoplasm Metastasis , Neoplasm Staging , Neoplasms/diagnosis , Neoplasms/etiology , Neoplasms/metabolism , Tomography, X-Ray Computed , Treatment Outcome
11.
JAMA Ophthalmol ; 137(1): 96-100, 2019 01 01.
Article in English | MEDLINE | ID: mdl-30383154

ABSTRACT

Importance: Checkpoint inhibition in cancer immunotherapy related to T-cell-driven mechanisms of action associated with acute macular neuroretinopathy (AMN) and diffuse retinal venulitis, an adverse event not previously described, is reported here. Objective: To describe 2 patients who developed ophthalmologic events after treatment with the programmed death 1 axis inhibitor, atezolizumab. Design, Setting, and Participants: Retrospective review of 2 patients treated with atezolizumab for metastatic breast cancer and colon cancer, respectively, who presented with AMN and diffuse retinal venulitis conducted at 2 tertiary medical centers. Main Outcomes and Measures: Multimodal imaging including near infrared, optical coherence tomography, and fluorescein angiography were used to characterize retinal vascular abnormalities. Results: Based on optical coherence tomography and multimodal imaging findings, the clinical diagnosis of AMN associated with diffuse retinal venulitis was made in these 2 patients receiving atezolizumab. Conclusions and Relevance: While only 2 cases of patients receiving the programmed death ligand 1 inhibitor atezolizumab who experienced AMN and diffuse retinal venulitis are described here, these findings suggest that patients receiving programmed death 1 axis inhibitor therapies may need to be monitored for unexpected immune-related ocular toxicity including abnormalities of the microvasculature and large retinal vessels. Further studies might investigate the potential mechanisms of retinal vascular changes associated with these therapies.


Subject(s)
Antibodies, Monoclonal/adverse effects , Antineoplastic Agents/adverse effects , Immunotherapy/adverse effects , Retinal Diseases/chemically induced , Retinal Vein/drug effects , Vasculitis/chemically induced , Acute Disease , Adult , Antibodies, Monoclonal, Humanized , Breast Neoplasms/drug therapy , Colonic Neoplasms/drug therapy , Female , Fluorescein Angiography , Humans , Male , Multimodal Imaging , Retinal Diseases/diagnosis , Retinal Vein/pathology , Retrospective Studies , Spectrophotometry, Infrared , Tomography, Optical Coherence , Vasculitis/diagnosis
12.
BJU Int ; 123(1): 149-159, 2019 01.
Article in English | MEDLINE | ID: mdl-30222915

ABSTRACT

OBJECTIVES: To analyse the results of the stress urinary incontinence (SUI) audit conducted by the British Association of Urological Surgeons (BAUS), and to present UK urologists' contemporary management of SUI. PATIENTS AND METHODS: The BAUS audit tool is an online resource, to which all UK urologists performing procedures for SUI are invited to submit data. The data entries for procedures performed during 2014-2016 were collated and analysed. RESULTS: Over the 3-year period analysed, 2917 procedures were reported by 109 surgeons, with a median of 20 procedures reported per surgeon. A total of 2 366 procedures (81.1%) were recorded as a primary surgery, with 548 procedures (18.8%) performed for recurrent SUI. Within the time period analysed, changes were noted in the frequency of all procedures performed, with a trend towards a reduction in the use of synthetic mid-urethral tapes, and a commensurate increase in the use of urethral bulking agents and autologous fascial slings. A total of 107 (3.9% of patients) peri-operative complications were recorded, with no association identified with patient age, BMI or surgeon volume. Follow-up data were available on 1832 patients (62.8%) at a median of 100 days postoperatively. Reduced pad use was reported in 1311 of patients (84.5%) with follow-up data available and 86.3% reported a pad use of one or less per day. In all, 375 patients (85%) reported being satisfied or very satisfied with the outcome of their procedure at follow-up, although data entry for this domain was poor. De novo overactive bladder (OAB) symptoms were reported by 15.2% of patients (263/1727), and this was the most commonly reported postoperative complication. For those reporting pre-existing OAB prior to their SUI surgery, 28.7% (307/1069) of patients reported they got better after their procedure, whilst 61.9% (662/1069) of patients reported no change and 9.4% of patients (100/1 069) got worse. CONCLUSIONS: This review identified that, despite urological surgeons undertaking a relatively low volume of procedures per year, SUI surgery by UK urologists is associated with excellent short-term surgeon- and patient-reported outcomes and low numbers of low grade complications. Complications do not appear to be associated with surgeon volume, nor do they appear higher in those undergoing mesh surgery. Shortfalls in data collection have been identified, and a longer follow-up period is required to comment adequately on long-term complications, such as chronic pain and tape extrusion/erosion rates.


Subject(s)
Medical Audit , Practice Patterns, Physicians'/trends , Suburethral Slings/trends , Urinary Incontinence, Stress/surgery , Urology/statistics & numerical data , Absorbent Pads , Adolescent , Adult , Aged , Aged, 80 and over , Data Collection/standards , Fascia/transplantation , Female , Humans , Intraoperative Complications/etiology , Middle Aged , Pain, Postoperative/etiology , Patient Satisfaction , Reoperation , Suburethral Slings/adverse effects , Surgical Mesh/adverse effects , Treatment Outcome , United Kingdom , Urinary Bladder, Overactive/etiology , Urology/trends , Young Adult
13.
J Surg Educ ; 76(1): 215-222, 2019.
Article in English | MEDLINE | ID: mdl-30174146

ABSTRACT

OBJECTIVES: To evaluate skills progression at the Urology Simulation Boot Camp (USBC), a course intended to provide urology trainees with 32 hours of 1:1 training on low and high-fidelity simulators. DESIGN: In this single-group cohort study, trainees rotated through modules based on aspects of the United Kingdom urology residency curriculum and undertook a pre and postcourse MCQ. Specific procedural skill was evaluated by an expert and graded as either: "A"-Good (≥4 on a 5-point Likert Scale) or "B"-Poor (Likert scale of 1-3). Competence progression was calculated as the change in score between baseline and final assessments. SETTING: The USBC was held at St James' University Hospital, Leeds, U.K. PARTICIPANTS: Of the 34 trainees attended the second USBC, 33 trainees participated in all the pre and postcourse assessments. The mean duration of urology training prior to undertaking the USBC was 15 months. RESULTS: Competence progression was assessed in 33 urology trainees. Mean MCQ scores improved by 16.7% (p < 0.001) between pre and postcourse assessment. At final assessment, 87.9% of trainees scored "A" in instrument knowledge and assembly compared to 44.4% at baseline (p < 0.001). There was a mean improvement of 439s (p < 0.001) in the time taken to complete the European-Basic Laparoscopic skills assessment. CONCLUSIONS: The USBC has shown to aid trainees in competence progression during the simulation on a variety of urological skills; however, retention of skill in the long-term was undetermined. The use of our grading system is simple to understand and may be used in other simulation courses to guide participants with their future training needs.


Subject(s)
Clinical Competence , Educational Measurement , Simulation Training , Urology/education , Cohort Studies , Curriculum , Female , Humans , Male , United Kingdom
14.
Pharm Res ; 35(12): 233, 2018 Oct 15.
Article in English | MEDLINE | ID: mdl-30324422

ABSTRACT

PURPOSE: GDC-0810, administered orally, was used in Phase I and II clinical studies to treat estrogen receptor positive breast cancers. It contains N-methyl-D-glucamine (NMG) salt of GDC-0810 with 10% sodium lauryl sulfate (SLS) as a surfactant and 15% sodium bicarbonate (NaHCO3) as an alkalizing agent to aid dissolution. To improve the processability of the formulation and reduce potential mucosal irritation in future Phase III clinical studies, the salt form and the amount of excipient required further optimization. To achieve this, we employed a novel "Make and Test in Parallel" strategy that facilitated selecting formulation in a rapid timeframe. METHODS: RapidFACT®, a streamlined, data-driven drug product optimization platform was used to bridge Phase I/II and Phase III formulations of GDC-0810. Five prototype formulations, varying in either the form of active pharmaceutical ingredient and/or the levels of the excipients SLS and NaHCO3 were assessed. Uniquely, the specific compositions of formulations manufactured and dosed were selected in real-time from emerging clinical data. RESULTS: The study successfully identified a Phase III formulation with a reduced SLS content, which when administered following a low-fat meal, gave comparable pharmacokinetic exposure to the Phase I/II formulation administered under the same conditions. CONCLUSIONS: Our novel 'Make and Test in Parallel' approach enabled optimization of GDC-0810 formulation in a time- and cost-efficient fashion.


Subject(s)
Antineoplastic Agents/pharmacokinetics , Cinnamates/pharmacokinetics , Drug Compounding , Excipients/chemistry , Indazoles/pharmacokinetics , Administration, Oral , Aged , Antineoplastic Agents/administration & dosage , Antineoplastic Agents/chemistry , Biological Availability , Breast Neoplasms/drug therapy , Breast Neoplasms/metabolism , Cinnamates/administration & dosage , Cinnamates/chemistry , Cross-Over Studies , Female , Food-Drug Interactions , Humans , Indazoles/administration & dosage , Indazoles/chemistry , Meglumine/chemistry , Middle Aged , Receptors, Estrogen/metabolism , Sodium Dodecyl Sulfate/chemistry , Surface-Active Agents/chemistry
15.
Pharm Res ; 35(12): 244, 2018 10 26.
Article in English | MEDLINE | ID: mdl-30367284

ABSTRACT

The Publisher regrets the typesetting mistake of retaining incorrect text in the Figure 1 caption. The correct text for the caption is "Molecular Structure of GDC-0810 NMG Salt". The original article has been corrected.

17.
J Clin Pharmacol ; 58(11): 1427-1435, 2018 11.
Article in English | MEDLINE | ID: mdl-29786857

ABSTRACT

Developed as an oral anticancer drug to treat estrogen receptor-positive breast cancer, GDC-0810 was shown to be a potent inhibitor of organic anion-transporting polypeptide 1B1 and 1B3 (OATP1B1/1B3) from an in vitro assay. A clinical study was conducted to assess the drug-drug interaction potential between GDC-0810 and pravastatin, which is a relatively selective and sensitive OATP1B1/1B3 substrate. Fifteen healthy female subjects of non-childbearing potential were enrolled in the study. On day 1 in period 1, a single 10-mg dose of pravastatin was administered to all subjects. Following a 4-day washout period, 600 mg of GDC-0810 was administered once daily on days 5 through 8 in period 2 to achieve steady-state concentrations. On day 7, a single dose of 10-mg pravastatin was coadministered with the 600-mg GDC-0810 dose. Concentrations of pravastatin (periods 1 and 2) and GDC-0810 (period 2 only) were quantified in blood samples and subsequently used to calculate the pharmacokinetics (PK) parameters. The pravastatin mean maximal concentration and area under the curve values were approximately 20% and 41% higher, respectively, following pravastatin coadministration with GDC-0810 compared to pravastatin alone. Based on the magnitude of change in this drug-drug interaction study, dose adjustments for pravastatin (and other OATP1B1/1B3 substrates) were not considered necessary when administered with GDC-0810. Retrospectively, the endogenous biomarkers of OATP1B1/1B3, coproporphyrin I and III, were also measured and showed changes comparable to those of pravastatin, indicating their utility in detecting weak inhibition of OATP1B1/1B3 in the clinical setting.


Subject(s)
Cinnamates/pharmacology , Coproporphyrins/pharmacokinetics , Indazoles/pharmacology , Liver-Specific Organic Anion Transporter 1/antagonists & inhibitors , Liver-Specific Organic Anion Transporter 1/pharmacokinetics , Pravastatin/pharmacokinetics , Adult , Area Under Curve , Drug Interactions , Female , Humans
18.
Int Urogynecol J ; 28(7): 989-992, 2017 Jul.
Article in English | MEDLINE | ID: mdl-27924372

ABSTRACT

INTRODUCTION AND HYPOTHESIS: There is little objective evidence regarding complication rates for mesh procedures outside clinical trials. Current coding poorly collects complications of prolapse and continence surgery using mesh. This survey was designed to identify surgeons performing mesh removal and reporting patterns in the UK. METHODS: An electronic questionnaire was sent to all members of the Royal College of Obstetricians and Gynaecologists and members of the Section of Female Neurological and Urodynamic Urology of the British Association of Urologists in the UK. The questionnaire aimed to identify the number of procedures performed for mesh complications and whether they were reported to the Medicines and Healthcare products Regulatory Agency (MHRA) and the patterns of referral and treatment RESULTS: Referral to a colleague in the same hospital was common practice (69 %). Only 27 % of respondents stated that they reported all removals to the MHRA. The numbers of surgical procedures were low, with most respondents performing between one and three procedures each year and many not performing any surgery for a specific mesh complication in the previous year. CONCLUSIONS: Removal of exposed, eroded and/or painful vaginally inserted mesh is performed by many different surgeons in a variety of hospital settings in the UK.


Subject(s)
Device Removal/statistics & numerical data , Suburethral Slings/adverse effects , Surgical Mesh/adverse effects , Female , Humans , Surveys and Questionnaires
19.
PLoS One ; 10(10): e0139679, 2015.
Article in English | MEDLINE | ID: mdl-26445503

ABSTRACT

BACKGROUND: Onartuzumab, a recombinant humanized monovalent monoclonal antibody directed against MET, the receptor for the hepatocyte growth factor, has been investigated for the treatment of solid tumors. This publication describes the safety profile of onartuzumab in patients with solid tumors using data from the global onartuzumab clinical development program. METHODS: Adverse event (AE) and laboratory data from onartuzumab phase II/III studies were analyzed and coded into standardized terms according to industry standards. The severity of AEs was assessed using the NCI Common Toxicity Criteria, Version 4. Medical Dictionary for Regulatory Activities (MedDRA) AEs were grouped using the standardized MedDRA queries (SMQs) "gastrointestinal (GI) perforation", "embolic and thrombotic events, venous (VTE)", and "embolic and thrombotic events, arterial (ATE)", and the Adverse Event Group Term (AEGT) "edema." The safety evaluable populations (patients who received at least one dose of study treatment) for each study were included in this analysis. RESULTS: A total of 773 onartuzumab-treated patients from seven studies (phase II, n = 6; phase III, n = 1) were included. Edema and VTEs were reported in onartuzumab-treated patients in all seven studies. Edema events in onartuzumab arms were generally grade 1-2 in severity, observed more frequently than in control arms and at incidences ranging from 25.4-65.7% for all grades and from 1.2-14.1% for grade 3. Hypoalbuminemia was also more frequent in onartuzumab arms and observed at frequencies between 77.8% and 98.3%. The highest frequencies of all grade and grade ≥3 VTE events were 30.3% and 17.2%, respectively in onartuzumab arms. The cumulative incidence of all grade ATE events ranged from 0-5.6% (grade ≥3, 0-5.1%) in onartuzumab arms. The frequency of GI perforation was below 10% in all studies; the highest estimates were observed in studies with onartuzumab plus bevacizumab for all grades (0-6.2%) and grade ≥3 (0-6.2%). CONCLUSIONS: The frequencies of VTE, ATE, GI perforation, hypoalbuminemia, and edema in clinical studies were higher in patients receiving onartuzumab than in control arms; these are considered to be expected events in patients receiving onartuzumab.


Subject(s)
Antibodies, Monoclonal/adverse effects , Edema/etiology , Hypoalbuminemia/etiology , Intestinal Perforation/etiology , Thromboembolism/etiology , Venous Thromboembolism/etiology , Clinical Trials as Topic , Humans , Neoplasms/drug therapy
20.
BJU Int ; 115(6): 968-77, 2015 Jun.
Article in English | MEDLINE | ID: mdl-24961647

ABSTRACT

OBJECTIVE: To compare the long-term outcomes of a tension-free vaginal tape (TVT; Gynecare™, Somerville, NJ, USA), autologous fascial sling (AFS) and xenograft sling (porcine dermis, Pelvicol™; Bard, Murray Hill, NJ, USA) in the management of female stress urinary incontinence (SUI). PATIENTS AND METHODS: A multicentre randomised controlled trial carried out in four UK centres from 2001 to 2006 involving 201 women requiring primary surgery for SUI. The women were randomly assigned to receive TVT, AFS or Pelvicol. The primary outcome was surgical success defined as 'women reporting being completely 'dry' or 'improved' at the time of follow-up'. The secondary outcomes included 'completely dry' rates, changes in the Bristol Female Lower Urinary Tract Symptoms (BFLUTS) and EuroQoL EQ-5D questionnaire scores. RESULTS: In all, 162 (80.6%) women were available for follow-up with a median (range) duration of 10 (6.6-12.6) years. 'Success' rates for TVT, AFS and Pelvicol were 73%, 75.4% and 58%, respectively. Comparing the 1- and 10-year 'success' rates, there was deterioration from 93% to 73% (P < 0.05) in the TVT arm and 90% to 75.4% (P < 0.05) in the AFS arm; 'dry' rates were 31.7%, 50.8% and 15.7%, respectively. Overall, the 'dry' rates favoured AFS when compared with Pelvicol (P < 0.001) and TVT (P = 0.036). The re-operation rate for persistent SUI was 3.2% (two patients) in the TVT arm, 13.1% (five) in the Pelvicol arm, while none of the patients in the AFS arm required further intervention. CONCLUSIONS: Our study indicates there is not enough evidence to suggest a difference in long-term success rates between AFS and TVT. However, there is some evidence that 'dry' rates for AFS may be more durable than TVT.


Subject(s)
Suburethral Slings , Urinary Incontinence, Stress/surgery , Adult , Aged , Aged, 80 and over , Autografts , Female , Follow-Up Studies , Heterografts , Humans , Middle Aged , Patient Satisfaction , Postoperative Complications/etiology , Quality of Life , Treatment Outcome
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