Silin Wang

Objective: We aimed to identify potential causal immune cells and their phenotypes in benign and malignant thymic tumors from the FinnGen database using Mendelian randomization (MR). Methods: A two-sample MR approach was employed to evaluate the causal associations between 731 immune cell traits and the risk of benign and malignant thymomas using publicly available genetic datasets. Immune traits analyzed included median fluorescence intensity (MFI), relative cell count (RC), absolute cell count (AC), and morphological parameters (MP). Robustness of findings was assessed through sensitivity analyses, ensuring minimal heterogeneity and horizontal pleiotropy. Results: Four immune cell phenotypes, including CCR2 on CD14+ CD16+ monocytes (95% CI: 1.163–1.775, P = 0.0007) and transitional AC (95% CI: 1.176–3.232, P = 0.0095), were causally associated with benign thymomas and identified as risk factors. Conversely, naive-mature B cell AC (95% CI: 0.438–0.887, P = 0.0087) and natural killer (NK) AC (95% CI: 0.237–0.812, P = 0.0087) displayed protective effects. For malignant thymomas, seven immune phenotypes, including Memory B cell %B cell (95% CI: 1.160–2.242, P = 0.0045), were linked as risk factors, while three, such as IgD+ CD24− %B cells (95% CI: 0.438–0.868, P = 0.0055), exhibited protective associations. Sensitivity analyses confirmed the robustness of the results. Conclusion: Using genetic methodologies, we identified a robust link between immune cells and both benign and malignant thymic tumors. This study highlights the distinct immune phenotypes between benign and malignant thymic tumors, shedding light on their immunological mechanisms and suggesting new avenues for clinical immunotherapy.

In recent years, twin pregnancies have become increasingly common. The aim of our study was to analyze the exposure to risk factors for postpartum pulmonary edema in twin pregnancies. We get all our data from the “DATADRYAD” database, which is available directly. We used a variety of statistical methods, including multivariate logistic regression analysis and smoothed curve fitting. The aim was to critically assess the relationship between height and the occurrence of postpartum pulmonary edema in pregnant women with twin pregnancies. Among pregnant women whose height was P = .0104). There was no relationship between maternal height and postpartum development of pulmonary edema among pregnant women with height higher than 154 cm (P = .9142). Pregnant women who were taller than 154 cm had a 76% lower risk of developing pulmonary edema postpartum compared to pregnant women whose height was lower than 154 cm (P = .0005). Our study suggests that pregnant women with twin pregnancies whose height is <154 cm are more likely to suffer from postpartum pulmonary edema. Therefore, healthcare professionals and caregivers should pay closer attention to twin pregnancies with heights below 154 cm, be alert to the occurrence of pulmonary edema, and take preventive and therapeutic measures as early as possible. This will help prevent the development of pulmonary edema.

Pulmonary function, one of the main indicators of respiratory system assessment, is difficult to measure in specific cases. The study investigated the association between serum iron levels and pulmonary function. The cross-sectional study was conducted using data from 5319 participants from the 2010–2012 National Health and Nutrition Examination Survey. Forced expiratory volume in 1 second (FEV1), forced vital capacity (FVC), and forced expiratory flow from 25% to 75% of FVC were used as indicators of pulmonary function to analyze the relationship of serum iron and pulmonary function. Univariate and stratified analyses, multiple equation regression analysis, smoothed curve fitting analysis, and threshold effect analysis were performed to explore the relationship between pulmonary function and serum iron concentrations. Threshold effect analysis revealed a nonlinear relationship between serum iron levels and FVC, as well as FEV1, with inflection points observed at 8.1 (µmol/L) and 8.4 (µmol/L), respectively. When serum iron concentrations fell below the inflection point, there was no statistically significant relationship between serum iron and FVC (P = .065) or FEV1 (P = .095) (P > .005). However, when serum iron concentrations exceeded the inflection point, both FVC (β = 6.87; 95% confidence interval [CI] = 3.95, 9.79; P < .0001) and FEV1 (β = 7.09; 95% CI = 4.54, 9.64; P < .0001) exhibited a positive correlation with increasing serum iron levels. Additionally, forced expiratory flow from 25% to 75% of FVC (mL/s) demonstrated a positive association with serum iron (β = 6.72; 95% CI = 2.30, 11.13; P = .0029). Serum iron level was positively correlated with pulmonary function within a certain range of serum iron concentration. Serum iron level may be a protective factor for pulmonary function.

Rationale: With the advancement of targeted therapies, epidermal growth factor receptor tyrosine kinase inhibitors have become the preferred initial treatment for patients with advanced epidermal growth factor receptor (EGFR)-mutated non-small cell lung cancer. Osimertinib, a third-generation epidermal growth factor receptor tyrosine kinase inhibitor, is effective against exon 19 and 21 mutations as well as the T790M mutation. It has been approved by both the food and drug administration and European Medicines Agency for the treatment of non-small cell lung cancer patients with locally advanced or metastatic EGFR-mutated tumors, including those who have acquired T790M mutations. Patient concerns: To evaluate the effectiveness of osimertinib in treating patients with EGFR-mutated advanced lung adenocarcinoma and bone metastases, we present the treatment outcomes of 3 patients with EGFR 19 deletion-mutated advanced lung adenocarcinoma and bone metastases who received osimertinib treatment in recent years. All 3 cases involved elderly female patients, aged 62, 62, and 54, respectively. Diagnoses: All 3 cases exhibited a diagnosis of pulmonary adenocarcinoma accompanied by osseous metastases, with genetic testing revealing the presence of an EGFR 19del mutation. Interventions: In the first case, following 17 months of gefitinib therapy, disease progression prompted a switch to osimertinib treatment. In the second case, bone metastases were detected after 20 months of pemetrexed-carboplatin chemotherapy, leading to a transition to osimertinib therapy. In the third case, after 11 months of erlotinib treatment, bone metastases were identified. Subsequent interventions, including radiation therapy, pemetrexed-carboplatin chemotherapy, pemetrexed-bevacizumab maintenance therapy, and docetaxel chemotherapy, failed to arrest the progression of bone metastases. As a result, a combination of osimertinib and anlotinib targeted therapy was administered. Outcomes: All 3 patients experienced relatively good and favorable survival outcomes, with a progression-free survival of 22.7 months, 12 months, and 17.7 months, respectively. Lessons: These cases suggest that osimertinib is a promising treatment option for patients with EGFR 19 deletion-mutated lung adenocarcinoma and bone metastases, although further clinical studies are needed to confirm its efficacy.