Directed evolution of hyperactive integrases for site specific insertion of transgenes.

The ability to deliver large transgenes to a single genomic sequence with high efficiency would accelerate biomedical interventions. Current methods suffer from low insertion efficiency and most rely on undesired double-strand DNA breaks. Serine integrases catalyze the insertion of large DNA cargos at attachment (att) sites. By targeting att sites to the genome using technologies such as prime editing, integrases can target safe loci while avoiding double-strand breaks. We developed a method of phage-assisted continuous evolution we call IntePACE, that we used to rapidly perform hundreds of rounds of mutagenesis to systematically improve activity of PhiC31 and Bxb1 serine integrases. Novel hyperactive mutants were generated by combining synergistic mutations resulting in integration of a multi-gene cargo at rates as high as 80% of target chromosomes. Hyperactive integrases inserted a 15.7 kb therapeutic DNA cargo containing von Willebrand Factor. This technology could accelerate gene delivery therapeutics and our directed evolution strategy can easily be adapted to improve novel integrases from nature.

Directed evolution of hyperactive integrases for site specific insertion of transgenes.

The ability to deliver large transgenes to a single genomic sequence with high efficiency would accelerate biomedical interventions. Current methods suffer from low insertion efficiency and most rely on undesired double-strand DNA breaks. Serine integrases catalyze the insertion of large DNA cargos at attachment (att) sites. By targeting att sites to the genome using technologies such as prime editing, integrases can target safe loci while avoiding double-strand breaks. We developed a method of phage-assisted continuous evolution we call IntePACE, that we used to rapidly perform hundreds of rounds of mutagenesis to systematically improve activity of PhiC31 and Bxb1 serine integrases. Novel hyperactive mutants were generated by combining synergistic mutations resulting in integration of a multi-gene cargo at rates as high as 80% of target chromosomes. Hyperactive integrases inserted a 15.7 kb therapeutic DNA cargo containing Von Willebrand Factor. This technology could accelerate gene delivery therapeutics and our directed evolution strategy can easily be adapted to improve novel integrases from nature.

Designing a touchless physical examination for a virtual Objective Structured Clinical Examination.

Purpose: Given the COVID-19 pandemic, many Objective Structured Clinical Examinations (OSCEs) have been adapted to virtual formats without addressing whether physical examination maneuvers can or should be assessed virtually. In response, we developed a novel touchless physical examination station for a virtual OSCE and gathered validity evidence for its use. Methods: We used a touchless physical examination OSCE station pilot-tested in a virtual OSCE in which Internal Medicine residents had to verbalize their approach to the physical examination, interpret images and videos of findings provided upon request, and make a diagnosis. We explored differences in performance by training year using ANOVA. In addition, we analyzed data using elements of Bloom's taxonomy of learning, i.e. knowledge, understanding, and synthesis. Results: Sixty-seven residents (PGY1-3) participated in the OSCE. Scores on the pilot station were significantly different between training levels (F=3.936, p = 0.024, ηp2 = 0.11). The pilot station-total correlation (STC) was r = 0.558, and the item-station correlations ranged from r = 0.115-0.571, with the most discriminating items being those that assessed application of knowledge (interpretation and synthesis) rather than recall. Conclusion: This touchless physical examination station was feasible, had acceptable psychometric characteristics, and discriminated between residents at different levels of training.

Objet: Compte tenu de la pandémie de COVID-19, de nombreux examens cliniques objectifs structurés (ECOS) ont été adaptés vers un format virtuel sans que l'on se questionne à savoir si les manœuvres d'examen physique peuvent ou doivent être évaluées virtuellement. Conséquemment, nous avons développé une nouvelle station d'examen physique sans contact pour un ECOS virtuel et recueilli des preuves de validité concernant son utilisation. Méthodes: Nous avons utilisé une station d'examen physique sans contact testée dans le cadre d'un ECOS virtuel pendant lequel les résidents en médecine interne devaient verbaliser leur approche concernant l'examen physique, interpréter des images et des vidéos d'examens fournis sur demande, et poser un diagnostic. Nous avons étudié les différences de rendement en fonction de l'année de formation à l'aide de l'ANOVA. En outre, nous avons analysé les données en utilisant les éléments de la taxonomie de l'apprentissage de Bloom, c'est-à-dire la connaissance, la compréhension et la synthèse. Résultats: Soixante-sept résidents (PGY1-3) ont participé à l'ECOS. Les scores de la station pilote étaient significativement différents entre les niveaux de formation (F=3.936, p=0.024, ηp2=0.11). La corrélation totale de la station pilote (STC) était de r=0,558, et les corrélations question-station variaient de r=0,115-0,571, les questions les plus discriminantes étant celles qui évaluaient l'application (interprétation et synthèse) plutôt que le rappel de connaissances. Conclusion: Cette station d'examen physique sans contact était réalisable, a présenté des caractéristiques psychométriques acceptables et a permis d'établir une discrimination entre les résidents de différents niveaux de formation.

The use of virtual nominal groups in healthcare research: An extended scoping review.

INTRODUCTION: The Nominal Group Technique (NGT) is a consensus group method used to synthesize expert opinions. Given the global shift to virtual meetings, the extent to which researchers leveraged virtual platforms is unclear. This scoping review explores the use of the vNGT in healthcare research during the COVID-19 pandemic. METHODS: Following the Arksey and O'Malley's framework, eight cross-disciplinary databases were searched (January 2020-July 2022). Research articles that reported all four vNGT stages (idea generation, round robin sharing, clarification, voting) were included. Media Synchronicity Theory informed analysis. Corresponding authors were surveyed for additional information. RESULTS: Of 2,589 citations, 32 references were included. Articles covered healthcare (27/32) and healthcare education (4/32). Platforms used most were Zoom, MS Teams and GoTo but was not reported in 44% of studies. Only 22% commented on the benefits/challenges of moving the NGT virtually. Among authors who responded to our survey (16/32), 80% felt that the vNGT was comparable or superior. CONCLUSIONS: The vNGT provides several advantages such as the inclusion of geographically dispersed participants, scheduling flexibility and cost savings. It is a promising alternative to the traditional in-person meeting, but researchers should carefully describe modifications, potential limitations, and impact on results.

The 1000 Mitoses Project: A Consensus-Based International Collaborative Study on Mitotic Figures Classification.

Introduction. The identification of mitotic figures is essential for the diagnosis, grading, and classification of various different tumors. Despite its importance, there is a paucity of literature reporting the consistency in interpreting mitotic figures among pathologists. This study leverages publicly accessible datasets and social media to recruit an international group of pathologists to score an image database of more than 1000 mitotic figures collectively. Materials and Methods. Pathologists were instructed to randomly select a digital slide from The Cancer Genome Atlas (TCGA) datasets and annotate 10-20 mitotic figures within a 2 mm2 area. The first 1010 submitted mitotic figures were used to create an image dataset, with each figure transformed into an individual tile at 40x magnification. The dataset was redistributed to all pathologists to review and determine whether each tile constituted a mitotic figure. Results. Overall pathologists had a median agreement rate of 80.2% (range 42.0%-95.7%). Individual mitotic figure tiles had a median agreement rate of 87.1% and a fair inter-rater agreement across all tiles (kappa = 0.284). Mitotic figures in prometaphase had lower percentage agreement rates compared to other phases of mitosis. Conclusion. This dataset stands as the largest international consensus study for mitotic figures to date and can be utilized as a training set for future studies. The agreement range reflects a spectrum of criteria that pathologists use to decide what constitutes a mitotic figure, which may have potential implications in tumor diagnostics and clinical management.

Assessment of Pathology Domain-Specific Knowledge of ChatGPT and Comparison to Human Performance.

CONTEXT.­: Artificial intelligence algorithms hold the potential to fundamentally change many aspects of society. Application of these tools, including the publicly available ChatGPT, has demonstrated impressive domain-specific knowledge in many areas, including medicine. OBJECTIVES.­: To understand the level of pathology domain-specific knowledge for ChatGPT using different underlying large language models, GPT-3.5 and the updated GPT-4. DESIGN.­: An international group of pathologists (n = 15) was recruited to generate pathology-specific questions at a similar level to those that could be seen on licensing (board) examinations. The questions (n = 15) were answered by GPT-3.5, GPT-4, and a staff pathologist that recently passed their Canadian pathology licensing exams. Participants were instructed to score answers on a 5-point scale and to predict which answer was written by ChatGPT. RESULTS.­: GPT-3.5 performed at a similar level to the staff pathologist, while GPT-4 outperformed both. The overall score for both GPT-3.5 and GPT-4 was within the range of meeting expectations for a trainee writing licensing examinations. In all but one question, the reviewers were able to correctly identify the answers generated by GPT-3.5. CONCLUSIONS.­: By demonstrating the ability of ChatGPT to answer pathology-specific questions at a level similar to (GPT-3.5) or exceeding (GPT-4) a trained pathologist, this study highlights the potential of large language models to be transformative in this space. In the future, more advanced iterations of these algorithms with increased domain-specific knowledge may have the potential to assist pathologists and enhance pathology resident training.

The Ansa Hypoglossi: Quantifying Axonal Density of a Donor Nerve for Facial Reinnervation.

Background: There are a number of nerve grafting options for facial reanimation and the ansa hypoglossi (AH) may be considered in select situations. Objective: To compare axonal density, area, and diameter of AH with other nerves more usually used for facial reanimation. Methods: AH specimens from patients undergoing neck dissections were submitted in formalin. Proximal to distal cross sections, nerve diameters, and the number of axons per nerve, proximally and distally, were measured and counted. Results: Eighteen nerve specimens were analyzed. The average manual axon count for the distal and proximal nerve sections was 1378 ± 333 and 1506 ± 306, respectively. The average QuPath counts for the proximal and distal nerve sections were 1381 ± 325 and 1470 ± 334, respectively. The mean nerve area of the proximal and distal nerve sections was 0.206 ± 0.01 and 0.22 ± 0.064 mm2, respectively. The mean nerve diameter for the proximal and distal nerve sections were 0.498 ± 0.121 and 0.526 ± 0.75 mm, respectively. Conclusion: The histological characteristics of the AH support clinical examination of outcomes as a promising option in facial reanimation.

Symptom and Treatment Satisfaction in Members of the US and Canadian GBS/CIDP Foundations with a Diagnosis of Chronic Inflammatory Demyelinating Polyneuropathy.

INTRODUCTION: Current guidelines for defining good outcomes in patients with chronic inflammatory demyelinating polyneuropathy (CIDP) are predominately defined by experts. At present, we do not have a patient-anchored definition of what constitutes a "good" outcome. Our study aimed to assess the symptom burden of people living with CIDP, as well as satisfaction with treatments and clinical outcomes. METHODS: We conducted an online-survey in CIDP patients registered with the US and Canadian GBS/CIDP foundations. Respondents answered general demographic and clinical questions, as well as satisfaction with current symptom burden and treatments, plus validated outcome measures. RESULTS: A total of 318 individuals with self-reported CIDP completed the online survey, of whom 128 (40%) considered their current disease burden as satisfactory while 190 (60%) did not. Of 305 patients who answered the treatment satisfaction question, 222(74%) were satisfied with their treatments. Patients who were satisfied with their current symptoms had, on average, better scores in quality of life and disease severity scales, although regression modeling showed that only ability to walk, stable symptoms, and health utility scores were associated with symptom satisfaction. Treatment satisfaction was associated with stable symptoms, use of IVIG, and use of one versus no medication. CONCLUSIONS: A high proportion of members of the US and Canadian GBS/CIDP Foundations reporting a diagnosis of CIDP were unsatisfied with current symptoms, despite a high level of overall satisfaction with treatments. There is an unmet need for improving long-term outcomes in people with a diagnosis of CIDP, and for studying patient-centered long-term treatment goals.

Impact of COVID-19-related health care disruptions on pathologic cancer staging during the first pandemic year: a retrospective cohort study from March 2018 to March 2021.

BACKGROUND: The COVID-19 pandemic has created major disruptions in cancer care, with reductions in diagnostic tests and treatments. We evaluated the impact of these health care-related changes on cancer staging by comparing cancers staged before and during the pandemic. METHODS: We performed a retrospective cohort study at London Health Sciences Centre and St. Joseph's Health Care London, London, Ontario, Canada. We evaluated all pathologically staged breast, colorectal, prostate, endometrial and lung cancers (the 5 most common cancers by site, excluding nonmelanoma skin cancer) over a 3-year period (Mar. 15, 2018-Mar. 14, 2021). The pre-COVID-19 group included procedures performed between Mar. 15, 2018, and Mar. 14, 2020, and the COVID-19 group included procedures performed between Mar. 15, 2020, and Mar. 14, 2021. The primary outcome was cancer stage group, based on the pathologic tumour, lymph node, metastasis system. We performed univariate analyses to compare demographic characteristics, pathologic features and cancer stage between the 2 groups. We performed multivariable ordinal regression analyses using the proportional odds model to evaluate the association between stage and timing of staging (before v. during the pandemic). RESULTS: There were 4055 cases across the 5 cancer sites. The average number of breast cancer staging procedures per 30 days increased during the pandemic compared to the yearly average in the pre-COVID-19 period (41.3 v. 39.6), whereas decreases were observed for endometrial cancer (15.9 v. 16.4), colorectal cancer (21.8 v. 24.3), prostate cancer (13.6 v. 18.5) and lung cancer (11.5 v. 15.9). For all cancer sites, there were no statistically significant differences in demographic characteristics, pathologic features or cancer stage between the 2 groups (p > 0.05). In multivariable regression analysis, for all cancer sites, cases staged during the pandemic were not associated with higher stage (breast: odds ratio [OR] 1.071, 95% confidence interval [CI] 0.826-1.388; colorectal: OR 1.201, 95% CI 0.869-1.661; endometrium: OR 0.792, 95% CI 0.495-1.252; prostate: OR 1.171, 95% CI 0.765-1.794; and lung: OR 0.826, 95% CI 0.535-1.262). INTERPRETATION: Cancer cases staged during the first year of the COVID-19 pandemic were not associated with higher stage; this likely reflects the prioritization of cancer procedures during times of reduced capacity. The impact of the pandemic period on staging procedures varied between cancer sites, which may reflect differences in clinical presentation, detection and treatment.

Protocol for an extended scoping review on the use of virtual nominal group technique in research.

INTRODUCTION: Consensus group methods such as the Nominal Group Technique (NGT) and Delphi method are commonly used in research to elicit and synthesize expert opinions when evidence is lacking. Traditionally, the NGT involves a face-to-face interaction. However, due to the COVID-19 pandemic, many in-person meetings have moved to online settings. It is unclear to what extent the NGT has been undertaken in virtual settings. The overarching aim of this scoping review is to explore the use of the virtual NGT in research. Our specific objectives are to answer the following questions: To what extent has the NGT been used virtually? What modifications were made to accommodate this online format? What advantages and disadvantages were noted by authors in comparison with the face-to-face mode of the technique? MATERIALS AND METHODS: This scoping review will follow the steps outlined by Arksey and O'Malley and the PRISMA-ScR guidelines. Several pilot searches were completed to refine inclusion and exclusion criteria. Media Synchronicity Theory will provide a conceptual framework to inform the research, including data extraction and summarizing results. As an additional extension to the literature review, online interviews with corresponding authors will be conducted to gather further information.

Impact of COVID-19 pandemic on neuropathology service: Experience at one Canadian center.

The COVID-19 pandemic has had a significant impact on medical services. Many countries postponed nonemergent procedures to preserve hospital resources for the unprecedented situation. Surgical backlogs caused by the COVID-19 pandemic have been evaluated by different groups. However, the impact of this pandemic on pathology and specifically neuropathology (NP) services has received limited attention. In this study, we reviewed all NP reports of the London Health Sciences Centre from January 2018 (2 years before the pandemic declaration) until the end of the year 2021. Demographic information and pathology details were collected. For tumors, site, histopathology types, and WHO grading were analyzed. In nontumoral specimens, pathological diagnoses were compared in pre- and postpandemic time. The total number of NP samples reached its lowest in April 2020, corresponding to the first Ontario provincial lockdown, and fluctuated throughout the studied period. Among the different types of NP surgical specimens, muscle and epilepsy-related specimens showed a more significant reduction, compared to neoplastic specimens. In 2020, the proportion of tumor specimens from patients older than 40 years of age increased. Similarly, the proportion of high-grade glioma and brain metastasis diagnoses also increased. Lastly, we observed a marked increase in biopsies for temporal arteritis and other inflammatory lesions.

Characterising the use of surgical pathology rush requests: a descriptive analysis and survey.

This study aimed to characterise priority or 'rush' surgical pathology requests and identify potentially targetable factors. We performed a retrospective descriptive analysis of rush requests at our institution from 2016 to 2019 and conducted a survey asking pathologists about their perspectives on rush cases. There were 3677 rush cases, with case characteristics generally stable over the study period. Two categories of requests were identified based on hospital status; outpatient requests more frequently provided a specific date for diagnosis, while inpatient rush requests generally required a diagnosis as soon as possible. Most pathologists found rush cases to be somewhat more stressful compared with routine cases (65.2%) and found it very or extremely useful to know when a result is needed (86.9%). The use of hospitalisation status, and identifying if results are required by a certain date, may help in more effective triaging of rush surgical pathology cases.

Lowering barriers to naloxone access through a student-led harm reduction program.

BACKGROUND: In recent years, the opioid crisis has had devastating effects on communities across the country. In the wake of 4 University of Southern California (USC) student overdose deaths in 2019, USC pharmacy students initiated a naloxone distribution program called NaloxoneSC. This program has distributed free naloxone kits, fentanyl test strips, and overdose prevention training to hundreds of students thus far. This report aims to provide a framework for the implementation of similar harm reduction programs at other universities. OBJECTIVES: NaloxoneSC partnered with USC Student Health to implement a naloxone distribution program that expands access to naloxone and increases opioid overdose education within the USC community. SETTING: USC undergraduate campus and Health Sciences Campus. METHODS: Students can follow the steps for obtaining a naloxone kit listed on the NaloxoneSC website. Watching a 10-minute training video or attending a naloxone training workshop completes the opioid overdose education. The kit is picked up by the student from 1 of 2 USC Student Health Center locations, Engemann or Eric Cohen. Each kit is packaged with Narcan nasal spray and fentanyl test strips. RESULTS: In 1 year, the program received at least 320 naloxone kit requests. Demand for naloxone kits increased over time, and roughly 4 times as many students requested kits from Engemann than from Eric Cohen. Approximately 600 students have received opioid overdose education through NaloxoneSC. CONCLUSIONS: In 1 year, more than 300 USC students voluntarily requested naloxone kits from NaloxoneSC. These findings suggest a need for increased access to this resource on college campuses. Peer-to-peer education and naloxone kit distribution are feasible and effective strategies that help address public health concerns and reduce harm among university students. NaloxoneSC can serve as an example for other college campuses or entities to newly implement or expand their own harm reduction measures.

Explainable artificial intelligence to predict the risk of side-specific extraprostatic extension in pre-prostatectomy patients.

INTRODUCTION: We aimed to develop an explainable machine learning (ML) model to predict side-specific extraprostatic extension (ssEPE) to identify patients who can safely undergo nerve-sparing radical prostatectomy using preoperative clinicopathological variables. METHODS: A retrospective sample of clinicopathological data from 900 prostatic lobes at our institution was used as the training cohort. Primary outcome was the presence of ssEPE. The baseline model for comparison had the highest performance out of current biopsy-derived predictive models for ssEPE. A separate logistic regression (LR) model was built using the same variables as the ML model. All models were externally validated using a testing cohort of 122 lobes from another institution. Models were assessed by area under receiver-operating-characteristic curve (AUROC), precision-recall curve (AUPRC), calibration, and decision curve analysis. Model predictions were explained using SHapley Additive exPlanations. This tool was deployed as a publicly available web application. RESULTS: Incidence of ssEPE in the training and testing cohorts were 30.7 and 41.8%, respectively. The ML model achieved AUROC 0.81 (LR 0.78, baseline 0.74) and AUPRC 0.69 (LR 0.64, baseline 0.59) on the training cohort. On the testing cohort, the ML model achieved AUROC 0.81 (LR 0.76, baseline 0.75) and AUPRC 0.78 (LR 0.75, baseline 0.70). The ML model was explainable, well-calibrated, and achieved the highest net benefit for clinically relevant cutoffs of 10-30%. CONCLUSIONS: We developed a user-friendly application that enables physicians without prior ML experience to assess ssEPE risk and understand factors driving these predictions to aid surgical planning and patient counselling (https://share.streamlit.io/jcckwong/ssepe/main/ssEPE_V2.py).

eConsult Specialist Quality of Response (eSQUARE): A novel tool to measure specialist correspondence via electronic consultation.

High-quality correspondence between healthcare providers is critical for effective patient care. We developed an assessment tool to measure the quality of specialist correspondence to primary care providers (PCPs) via electronic consultation (eConsult), where specialists provide advice without specialist-patient interactions. We incorporated fourteen previously described features of high-quality eConsult correspondence into an assessment tool named the eConsult Specialist Quality of Response (eSQUARE). Six PCPs and two specialists applied the 10-item eSQUARE tool to 30 eConsults of varying quality as informed by PCP survey data. Content, response process, and internal structure validity evidence was gathered. Psychometric properties were calculated using descriptive statistics and generalizability analyses. Mean total score for low-quality eConsults (M = 24 ± 5.6) was significantly lower than moderate-quality eConsults (M = 38 ± 4.7; p<0.001) which was significantly lower than high-quality eConsults (M = 46 ± 3.0; p = 0.002). Reliability measures were high, including generalizability coefficient (0.96), inter-item (≥0.55) and item-total correlations (≥0.68). A decision study demonstrated that a single rater was adequate to achieve a reliability measure of ≥0.70. This study demonstrates initial validity evidence including multiple reliability measures for the eSQUARE. A single rater is adequate to achieve reliability measures for formative feedback. Future studies can apply the eSQUARE when planning educational initiatives aiming to improve specialist-to-PCP correspondence via eConsult.

Defluorination Capability of l-2-Haloacid Dehalogenases in the HAD-Like Hydrolase Superfamily Correlates with Active Site Compactness.

l-2-Haloacid dehalogenases, industrially and environmentally important enzymes that catalyse cleavage of the carbon-halogen bond in S-2-halocarboxylic acids, were known to hydrolyse chlorinated, brominated and iodinated substrates but no activity towards fluorinated compounds had been reported. A screen for novel dehalogenase activities revealed four l-2-haloacid dehalogenases capable of defluorination. We now report crystal structures for two of these enzymes, Bpro0530 and Rha0230, as well as for the related proteins PA0810 and RSc1362, which hydrolyse chloroacetate but not fluoroacetate, all at ∼2.2 Šresolution. Overall structure and active sites of these enzymes are highly similar. In molecular dynamics (MD) calculations, only the defluorinating enzymes sample more compact conformations, which in turn allow more effective interactions with the small fluorine atom. Structural constraints, based on X-ray structures and MD calculations, correctly predict the defluorination activity of the homologous enzyme ST2570.

Functional recovery of the germ line following splicing collapse.

Splicing introns from precursor-messenger RNA (pre-mRNA) transcripts is essential for translating functional proteins. Here, we report that the previously uncharacterized Caenorhabditis elegans protein MOG-7 acts as a pre-mRNA splicing factor. Depleting MOG-7 from the C. elegans germ line causes intron retention in most germline-expressed genes, impeding the germ cell cycle, and causing defects in nuclear morphology, germ cell identity and sterility. Despite the deleterious consequences caused by MOG-7 loss, the adult germ line can functionally recover to produce viable and fertile progeny when MOG-7 is restored. Germline recovery is dependent on a burst of apoptosis that likely clears defective germ cells, and viable gametes generated from the proliferation of germ cells in the progenitor zone. Together, these findings reveal that MOG-7 is essential for germ cell development, and that the germ line can functionally recover after a collapse in RNA splicing.

Comparing the content of traditional faxed consultations to eConsults within an academic endocrinology clinic.

OBJECTIVE: To compare the content of traditional faxed referrals and electronic consultations (eConsults) and determine how many questions sent by traditional referral could be successfully addressed using eConsult. METHODS: We conducted a cross-sectional, qualitative study of eConsults and faxed referrals sent to a tertiary diabetes and endocrinology clinic in Ottawa, Ontario. A convenience sample of 300 faxed referrals sent between March and July 2017 and 300 eConsults submitted between January and December 2017 were selected and coded using an established taxonomy to determine question type. Two endocrinologists reviewed the faxed referrals to assess whether they could have been addressed using eConsult. Responses to a mandatory closeout survey were reviewed for all eConsults, assessing the case's outcome, impact on decision to refer, and educational value. RESULTS: Most faxed consultations were requests for shared care in diabetes mellitus, whereas most eConsults requested help in diagnostic test interpretation. 25-27% of faxed consults were felt to be potentially amenable to eConsult. Referring provider behaviour was changed in 45.3% of eConsult cases through avoidance of face-to-face consultation. CONCLUSION: eConsult is a promising tool for PCPs to improve access to specialist opinion without necessitating a face-to-face visit.