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Background The financial implications of central nervous system (CNS) cancers are substantial, not only for the healthcare service and payers, but also for the patients who bear the brunt of direct, indirect, and intangible costs. This study sought to investigate the impact of healthcare spending on CNS cancer survival using recent US data. Methods This study used public data from the Disease Expenditure Project 2016 and the Global Burden of Disease Study 2019. The primary outcome was the annual healthcare spending trend from 1996 and 2016 on CNS tumors adjusted for disease prevalence, alongside morbidity and mortality. Secondary outcomes included drivers of change in healthcare expenditures for CNS cancers. Subgroup analysis was performed stratified by age group, expenditure type, and care type provided. Results There was a significant increase in total healthcare spending on CNS cancers from $2.72 billion (95% CI: $2.47B to $2.97B) in 1996 to $6.85 billion (95% CI: $5.98B to $7.57B) in 2016. Despite the spending increase, the mortality rate per 100 000 people increased, with 5.30 ± 0.47 in 1996 and 7.02 ± 0.47 in 2016, with an average of 5.78 ± 0.47 deaths per 100 000 over the period. The subgroups with the highest expenditure included patients aged 45 to 64, those with private insurance, and those receiving inpatient care. Conclusions This study highlights a significant rise in healthcare costs for CNS cancers without corresponding improvements in mortality rate, indicating a mismatch of healthcare spending, contemporary advances, and patient outcomes as it relates to mortality. [ABSTRACT FROM AUTHOR]

Introduction: Laparoscopic sleeve gastrectomy (SG) is the most common bariatric surgical procedure worldwide. Approximately 20%–30% of patients present with weight loss failure or reflux following SG, which might require reoperative surgery. We present the surgical outcomes and complications following reoperative bariatric surgery at a tertiary care centre. Patients and Methods: Prospectively collected data of all patients undergoing reoperative bariatric surgery from 2008 to 2021 were analysed retrospectively. Weight loss, resolution of comorbidities and complications following reoperative surgery were evaluated. Results: Twenty-six patients were included in the study. The mean age was 38.8 (10.8) years. The primary procedure performed was laparoscopic SG in all cases. Nine patients underwent Roux en Y gastric bypass(RYGB) (one banded RYGB) and 14 underwent one anastomosis gastric bypass(OAGB) (three-banded OAGB). Three patients underwent resleeve. The most common indication was weight loss failure (65.3%). Fifteen patients were diagnosed to have hiatal hernia intraoperatively and concomitant repair was performed. The mean body mass index before revision surgery was 42.7 (9.8). It was 32.6 (5.7) kg/m² and 33.0 (6.1) kg/m² at 1 and 3 years, respectively. Age and pre-revision surgery excess weight correlated with weight loss (r = −0.79 and r = 0.99, respectively). Leak and bleeding occurred in one and two patients, respectively. There were two band-related complications and one 30-day mortality. Conclusion: Re-operative bariatric surgery following SG has adequate weight loss with acceptable complication rates. Band placement in re-operative surgery might lead to a higher complication rate. [ABSTRACT FROM AUTHOR]

Background: The association between objective imaging response and first line immune checkpoint inhibitor (ICI) therapy regimes in advanced melanoma remains uncharacterized in routine practice. Methods: We conducted a multi-center retrospective cohort analysis of advanced melanoma patients receiving first line ICI therapy from August 2013-May 2020 in Alberta, Canada. The primary outcome was likelihood of RECIST v1.1 assessed objective imaging response between patients receiving anti-programmed cell death protein 1 (anti-PD1) monotherapy and those receiving combination ipilimumab-nivolumab. Secondary outcomes were identification of baseline characteristics associated with non-response and the association of imaging response with overall survival (OS) and time to next treatment (TTNT). Results: 198 patients were included, 41/198 (20.7%) had complete response, 86/198 (43.4%) had partial response, 23/198 (11.6%) had stable disease, and 48/198 (24.2%) had progressive disease. Median OS was not reached (NR) (95% CI 49.0-NR) months for complete responders, NR (95%CI 52.9-NR) months for partial responders, 33.7 (95%CI 15.8-NR) months for stable disease, and 6.4 (95%CI 5.2–10.1) months for progressive disease (log-rank p<0.001). Likelihood of objective imaging response remained similar between anti-PD1 monotherapy and ipilimumab-nivolumab groups (OR 1.95 95%CI 0.85–4.63, p=0.121). Elevated LDH level (OR 0.46; 95%CI 0.21–0.98, p=0.043), mucosal primary site (OR 0.14; 95%CI 0.03–0.48, p=0.003), and BRAF V600E mutation status (OR 0.31; 95%CI 0.13–0.72, p=0.007) were associated with decreased likelihood of response. Conclusion: No significant difference in likelihood of imaging response between anti-PD1 monotherapy and combination ipilimumab-nivolumab was observed. Elevated LDH level, mucosal primary site, and BRAF V600E mutation status were associated with decreased likelihood of response. Given that pivotal clinical trials of ipilimumab-nivolumab did not formally compare ipilimumab-nivolumab with nivolumab monotherapy, this work adds context to differences in outcomes when these agents are used. These results may inform treatment selection, and aid in counseling of patients treated with first-line ICI therapy in routine clinical practice settings. [ABSTRACT FROM AUTHOR]

Byline: Mehul. Gupta, Sandeep. Aggarwal, Amit. Bhambri, Vitish. Singla, Rachna. Chaudhary Background: Bariatric surgery, besides causing significant weight reduction, leads to improvement in type 2 diabetes mellitus (T2DM). However, there [...]

Introduction: The data comparing laparoscopic sleeve gastrectomy (LSG) and one-anastomosis gastric bypass (OAGB) in patients with BMI ≥ 60 kg/m2 is scarce. Methods: Prospectively collected data of patients with BMI ≥ 60 kg/m2 undergoing LSG or OAGB from January 2008 until June 2022 was analyzed retrospectively. Weight loss outcomes, impact on comorbidities, and complications were compared in both groups. Results: Fifty-six patients underwent LSG and 13 patients underwent OAGB. The median age and BMI were 37 (34–44) years and 63 (61.3–64.6) kg/m2 respectively. Both the groups had similar baseline demographic parameters. The percentage excess BMI loss (%EBMIL) was statistically similar in LSG and OAGB groups at 1 year (46.2% vs 46.1%), 3 years (52.9% vs 56.7%), and 5 years (51.1% vs 62.3%). The percentage excess BMI regain was lower (although statistically similar) following OAGB at 3 years (5.3% vs 0.1%) and 5 years (12.9% vs 4.4%). OAGB was found to correlate positively with weight loss and negatively with weight regain (p > 0.05). There was one 30-day mortality due to postoperative lower respiratory infection in the LSG group. Conclusion: OAGB has a trend towards better weight loss outcomes as compared to LSG in patients with a BMI ≥ 60 kg/m2 with lesser complication rates and might be a preferred option. LSG also has acceptable weight loss and should be considered a standalone procedure if OAGB is not feasible technically. [ABSTRACT FROM AUTHOR]

Byline: Amit. Bhambri, Vitish. Singla, Sandeep. Aggarwal, Aashir. Kaul, Mehul. Gupta, Rachna. Chaudhary Introduction: There is a strong association between gastro-oesophageal reflux disease and morbid obesity. Methods: Two hundred and [...]

Background: Risk stratification tools for patients with advanced melanoma (AM) treated with immune checkpoint inhibitors (ICI) are lacking. We identified a new prognostic model associated with overall survival (OS). Patients and Methods: A total of 318 treatment naïve patients with AM receiving ICI were collected from a multi-centre retrospective cohort study. LASSO Cox regression identified independent prognostic factors associated with OS. Model validation was carried out on 500 iterations of bootstrapped samples. Harrel's C-index was calculated and internally validated to outline the model's discriminatory performance. External validation was carried out in 142 advanced melanoma patients receiving ICI in later lines. Results: High white blood cell count (WBC), high lactate dehydrogenase (LDH), low albumin, Eastern Cooperative Oncology Group (ECOG) performance status ≥1, and the presence of liver metastases were included in the model. Patients were parsed into 3 risk groups: favorable (0-1 factors) OS of 52.9 months, intermediate (2-3 factors) OS 13.0 months, and poor (≥4 factors) OS 2.7 months. The C-index of the model from the discovery cohort was 0.69. External validation in later-lines (N = 142) of therapy demonstrated a c-index of 0.65. Conclusions: Liver metastases, low albumin, high LDH, high WBC, and ECOG≥1 can be combined into a prognostic model for AM patients treated with ICI. Risk stratification tools for patients with advanced melanoma treated with immune checkpoint inhibitors (ICI) are lacking. This article reports a new prognostic model associated with overall survival, with a focus on clinically accessible parameters available at the start of ICI therapy. [ABSTRACT FROM AUTHOR]

Citizen science provides an opportunity for the public to contribute to, engage in and learn about science in the context of researchers' construction of scientific knowledge. The following paper explores four undergraduate students' understanding of science inquiry in relation to a citizen science project they developed for high school participants. The findings show that through their involvement in the study and the production of this article, which included a reflective writing and discursive component, the undergraduate students were able to broaden and deepen their notions of science inquiry. The students' development suggests that conceptualizing and implementing a citizen science project with high school students provides a unique platform not just for students' but also for teachers' development in the understanding of science inquiry. [ABSTRACT FROM AUTHOR]