Objective:To investigate the expression of EIF3B and its role in the development of laryngeal carcinoma. Methods:Immunohistochemistry, cell culture, cell transfection, qRT-PCR, Western Blot and other techniques were used to determine the expression difference of EIF3B in laryngeal cancer and adjacent tissues, and analyze the relationship between EIF3B and the size and TNM stage of laryngeal cancer. By constructing a laryngeal carcinoma cell model with EIF3B knocked down, the cell function was studied, and the regulatory effect of EIF3B on laryngeal carcinoma cells was proved in vitro. Finally, the effect of EIF3B on laryngeal carcinoma growth in vivo was studied by subcutaneous xenograft tumor model in nude mice. Results:The signal intensity of EIF3B in laryngeal carcinoma tissues was significantly stronger than that in adjacent tissues, and the expression level of EIF3B was positively correlated with patient age, TNM stage, lymph node metastasis, tumor size and clinical stage. Knocking down EIF3B can significantly inhibit the proliferation, migration and aggregation of cancer cells, and promote apoptosis. In vivo experiments with nude mice also showed that down-regulating EIF3B expression could inhibit tumor formation in vivo. Conclusion:The expression of EIF3B in laryngeal cancer is significantly increased, and it is closely related to the pathological characteristics of laryngeal cancer, which can be used as a diagnostic index of laryngeal cancer. In terms of function, EIF3B knockdown can inhibit the proliferation, migration and tumor formation of laryngeal cancer cells in vitro and in vivo, and may become a candidate target for targeted therapy of laryngeal cancer in the future.
Laryngeal Neoplasms/pathology* ; Humans ; Eukaryotic Initiation Factor-3/metabolism* ; Animals ; Mice, Nude ; Mice ; Cell Line, Tumor ; Cell Proliferation ; Apoptosis ; Cell Movement ; Neoplasm Staging ; Male ; Transfection ; Female ; Middle Aged ; Gene Expression Regulation, Neoplastic

Objective To explore the effects of home-based exercise rehabilitation on cardiac structure, valvular function, and exercise capacity in patients with severe aortic stenosis (AS) after transcatheter aortic valve replacement (TAVR). Methods 49 patients with severe AS who underwent TAVR at Zhongshan Hospital, Fudan University, from January 2024 to February 2025 were enrolled. They were divided into an exercise group (n＝25) or a non-exercise group (n＝24) based on participating or not in home-based rehabilitation after TAVR. The exercise group received 12 weeks of home-based exercise training (aerobic exercise plus resistance training every week); the non-exercise group received routine care. Transthoracic echocardiography (TTE) was used to assess cardiac structural parameters before discharge (T0) and after 12 weeks of exercise (T1). Functional outcomes including the 6-minute walk test (6MWT), Duke Activity Status Index (DASI), and Short Physical Performance Battery (SPPB) were compared between the two groups. A linear mixed-effects model was used to analyze the effect of home-based rehabilitation on echocardiographic parameters. Patients were stratified by baseline 6MWT (＜240 m as low-function subgroup, ≥240 m as high-function subgroup) to compare exercise-related outcomes between subgroups. Results At T1, the exercise group had a longer 6MWT distance than the non-exercise group (P＝0.012). The linear mixed-effects model showed that after 12 weeks of exercise, the left ventricular end-diastolic diameter (LVEDD) decreased in the exercise group but slightly increased in the non-exercise group, with a significant difference in changes over time between the two groups (P_interaction＝0.030). The exercise group also showed greater improvement in effective orifice area index (P_interaction＝0.028) and effective orifice area (P_interaction＝0.042) than the non-exercise group. Subgroup analysis revealed that in the low-function subgroup, the exercise group showed greater improvement in the 6MWT (P_interaction＝0.035) and the effective orifice area index (P_interaction＝0.046) compared to the non-exercise group; in the high-function subgroup, the exercise group showed greater improvement only in LVEDD compared to the non-exercise group (P_interaction＝0.046). Conclusions Home-based exercise rehabilitation improves exercise capacity, optimizes left ventricular remodeling, and enhances valvular function in patients with severe AS after TAVR, with greater benefits observed in patients with lower baseline 6MWT.

Objective:To establish a new classification system for distal clavicle fracture and evaluate its clinical effectiveness.Methods:A retrospective case series study was conducted to analyze the clinical data of 101 patients with distal clavicle fracture admitted to First Affiliated Hospital of Nanjing Medical University from January 2015 to March 2022, including 57 males and 44 females, aged 19-86 years [(53.8±14.0)years]. Before treatment, patients were routinely subjected to bilateral anteroposterior radiography of the shoulder joints to measure the length of the fractured fragments, coracoclavicular distance, and acromioclavicular distance. According to the correlation between the location of the fracture line and the insertion of the coracoclavicular ligament, distal clavicle fracture was divided into three types: type I, with the fracture line lateral to the coracoclavicular ligament region; type II, with the fracture line in the coracoclavicular ligament region; type III, with the fracture line medial to the coracoclavicular ligament region. According to the injury severity of the coracoclavicular ligament and acromioclavicular ligament, type I was further subdivided into type IA, IB, IC and ID, and type II fracture was further subdivided into type IIA, IIB, IIC, IID and IIE. All the 101 patients were classified and randomly reclassified at an interval of 3 months by 10 senior and 10 junior shoulder surgeons according to the new classification method. Kappa coefficients were used to evaluate the inter- and intra-observer consistency of the new classification. Fifty-two patients with stable fracture (types IA, IB, IIC, and IID) were treated non-surgically, while 49 patients with unstable fracture (types IC, ID, IIA, IIB, IIE, and III) were treated surgically, including 26 patients with anatomic coracoclavicular ligament reconstruction, 9 with locking plate fixation, 8 with clavicle hook plate fixation, 4 with anatomic coracoclavicular ligament reconstruction combined with locking plate fixation, and 2 with anatomic coracoclavicular ligament reconstruction combined with tension screw fixation. The patients were assessed using the visual analogue scale (VAS) and Constant-Murley shoulder score before treatment and at 3, 6, 12, and 18 months after treatment. The coracoclavicular distance and acromioclavicular distance on the anteroposterior radiographs of the healthy and affected shoulder joints were measured at 3, 6, 12, and 18 months after treatment, and fracture healing time and complications were observed.Results:The length of the fractured fragments was 12.9 (9.7, 17.6)mm in patients with type I fracture, 24.7 (21.8, 27.8)mm in patients with type II fracture, and 43.6 (41.2, 46.9)mm in patients with type III fracture ( P<0.01). There were no significant differences in the coracoclavicular distance and acromioclavicular distance of the affected and healthy shoulders among the patients with types IA, IB, IIC, IID, and III fracture ( P>0.05); For the patients with types IC, IIA, IIB and IIE fracture, the coracoclavicular distance of the affected shoulder was significantly increased compared with that of the healthy shoulder ( P<0.01), while there was no significant difference in the acromioclavicular distance of the affected and healthy shoulders ( P>0.05). Both of the inter- and intra-observer consistency of the new classification was good. The inter- and intra-observer Kappa values were 0.69 and 0.71 respectively among the senior shoulder surgeons, and 0.61 and 0.64 respectively among the junior shoulder surgeons. All the patients were followed up for 18-104 months [28(23, 32)months]. At 3, 6, 12 and 18 months after treatment, the VAS scores of non-surgical patients were 3(2, 3)points, 2(1, 2)points, 1(0, 1)points and 0(0, 1)points respectively, significantly decreased compared with 6(5, 6)points before treatment ( P<0.01); the VAS scores of surgical patients were 3(2, 3)points, 2(1, 2)points, 1(1, 1)points and 0(0, 1)points respectively, significantly decreased compared with 6(5, 7)points before treatment ( P<0.01); the Constant-Murley shoulder scores of non-surgical patients were (76.6±5.3)points, (84.3±5.0)points, (88.4±4.0)points and (91.9±3.8)points respectively, significantly higher than (42.7±5.2)points before treatment ( P<0.01); the Constant-Murley shoulder scores of surgical patients were (77.4±4.6)points, (84.4±4.7)points, (87.6±3.7)points and (91.7±4.0)points respectively, significantly higher than (42.8±5.3)points before treatment ( P<0.01). At 3, 6, 12 and 18 months after treatment, the coracoclavicular distance of the affected shoulder in non-surgical patients was not significantly different from that before treatment ( P>0.05), while the acromioclavicular distance of the affected shoulder in surgical patients was significantly reduced compared with that before treatment ( P<0.01). There were no significant differences in the coracoclavicular distance of the healthy shoulder or bilateral acromioclavicular distance in non-surgical and surgical patients at 3, 6, 12, and 18 months after treatment compared with those before treatment ( P>0.05). Fractures were healed within 12 months after treatment in all the patients, without dislocation or subluxation of the acromioclavicular joint, internal fixation failure or internal fixator breakage. Eight patients treated with clavicular hook plate fixation had shoulder pain associated with limited mobility after operation, and all underwent a second operation to remove the clavicular hook plate at 12 months after operation. Conclusions:The new classification system for distal clavicle fracture is established, which comprehensively considers the position of the fracture line, injury of the coracoclavicular and acromioclavicular ligaments, and fracture stability. The new classification system exhibits good inter- and intra- observer consistency, and the effectiveness of its preliminary clinical application is satisfactory.

Objective:To investigate the effects of extracts of Rhizoma Sparganii and Rhizoma Curcumae on cartilage damage in osteoarthritis rats and NADPH oxidase 2 (NOX2)/reactive oxygen species (ROS)/nuclear factor-κB (NF-κB) signaling pathways. Methods:Rats (50 cases) were divided into the sham group, and model group, as well as the low, medium, and high dose groups of extracts of Rhizoma Sparganii and Rhizoma Curcumae, with 10 rats in each group. Except for sham group, the rat model of cartilage damage in knee osteoarthritis was established. On the second day after modeling, the rats in the low, medium, and high dose groups received intragastric extracts perfusion of Rhizoma Sparganii and Rhizoma Curcumae at the doses of 5, 10, and 20 g/kg respectively. The rats in the sham and model groups received intragastric equivalent 0.9% sodium chloride solution perfusion, once daily, for 20 days by continuous administration. The knee joint behavior, bone metabolism indicators, serum superoxide dismutase (SOD), malondialdehyde (MDA), glutathione (GSH) levels, inflammatory factors, NOX2, and NF-κB levels of each group were observed. Results:Compared with the model group, the behavioral abnormality scores, cartilage oligomeric matrix protein (COMP), MDA, interleukin-6 (IL-6), tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), NOX2, and NF-κB levels in the low, medium, and high dose groups were all gradually decreased (all P < 0.05), while proteoglycan, SOD, GSH, and interleukin-10 (IL-10) levels in the low, medium, and high dose groups were all gradually increased (all P < 0.05), and it was dose-dependent. Conclusions:Rhizoma Sparganii and Rhizoma Curcumae extracts can effectively improve cartilage damage in osteoarthritis rats, and it may be related to the inhibition of the NOX2/ROS/NF-κB signaling pathway.

Objective:To investigate the clinical characteristics and prognostic factors of TCF3-PBX1 fusion gene-positive childhood B-cell precursor acute lymphoblastic leukemia (B-ALL).Methods:The clinical data of 1 287 newly diagnosed children with B-ALL who were admitted to five hospital in Fujian province (Fujian Medical University Union Hospital, the First Affiliated Hospital of Xiamen University, Zhangzhou Affiliated Hospital of Fujian Medical University, Quanzhou First Hospital Affiliated to Fujian Medical University, Nanping First Hospital of Fujian Province) from April 2011 to December 2020 were retrospectively analyzed. According to the results of TCF3-PBX1 fusion gene testing, all the patients were divided into TCF3-PBX1-positive group and TCF3-PBX1-negative group. The clinical characteristics, early treatment response [minimal residual disease (MRD) at middle stage and end of induction chemotherapy] and long-term efficacy [overall survival (OS) and event-free survival (EFS)] of the patients in both groups were compared. Kaplan-Meier method was used for survival analysis. The prognostic factors of TCF3-PBX1-positive B-ALL were analyzed by using Cox proportional hazards model. Among 83 children with TCF3-PBX1-positive B-ALL, the treatment regimens, risk stratification and efficacy evaluation of 62 cases were performed by using Chinese Children's Leukemia Group (CCLG)-ALL 2008 regimen and 21 cases were performed by using Chinese Children's Cancer Group (CCCG)-ALL 2015 regimen, and the efficacy and incidence of serious adverse events (SAE) between the two groups compared.Results:Among 1 287 B-ALL patients, 83 patients (6.4%) were TCF3-PBX1-positive. The proportion of patients with initial white blood cell count (WBC)≥50×10 9/L in the TCF3-PBX1-positive group was higher than that in the TCF3-PBX1-negative group, while the proportions of patients with MRD ≥1% on induction chemotherapy day 15 or day 19, and MRD ≥0.01% on induction chemotherapy day 33 or day 46 in the TCF3-PBX1-positive group were lower than those in the TCF3-PBX1-negative group (all P < 0.05). Univariate Cox regression analysis showed that MRD ≥1% on induction chemotherapy day 15 or day 19 and TCF3-PBX1 ≥0.01% on induction chemotherapy day 33 or day 46 were risk factors for OS and EFS (all P < 0.05). Multivariate analysis showed that MRD ≥1% on induction chemotherapy day 15 or day 19 was an independent risk factor for OS ( HR = 10.589, 95% CI 1.903-58.933, P = 0.007) and EFS ( HR = 10.218, 95% CI 2.429-42.980, P = 0.002). TCF3-PBX1≥0.01% on induction chemotherapy day 33 or day 46 was an independent risk factor for EFS ( HR = 6.058, 95% CI 1.463-25.087, P = 0.013) but not for OS ( HR = 3.550, 95% CI 0.736-17.121, P = 0.115). The 10-year EFS and OS rates of the TCF3-PBX1-positive group were 84.6% (95% CI 76.9%-93.1%) and 89.1% (95% CI 82.1%-96.6%), and the differences between the two groups were not statistically significant (both P > 0.05). Among 80 children who received standardized treatment, compared with children who were treated with CCLG-ALL 2008 regimen, the incidence of infection-related SAE was lower in children who were treated with CCCG-ALL 2015 regimen [0 (0/21) vs. 20.3% (12/59), χ2 = 5.22, P = 0.022], but there were no statistical differences in treatment-related mortality, relapse rate, EFS and OS between the two groups (all P > 0.05). Conclusions:Children with TCF3-PBX1-positive B-ALL have a good prognosis, and MRD≥1% at middle stage of induction chemotherapy and TCF3-PBX1≥0.01% at the end of induction chemotherapy may be influencing factors for poor prognosis. CCCG-ALL 2015 regimen can reduce infection-related SAE while achieving good efficacy.

Objective:To investigate the Correlation between ADC combined with serum C-reactive protein (CRP) and delayed encephalopathy after carbon monoxide poisoning (DEACMP), It provides scientific basis for early prediction of DEACMP.Methods:According to the design principle of case-control study, the data of acute carbon monoxide poisoning (ACOP) patients admitted to Shandong Provincial Hospital from December 2017 to December 2021 were retrospectively selected. Among them, patients with DEACMP were selected as the case group, without DEACMP were used as the control group. Univariate and multivariate analyses were performed on the two groups. Receiver operating characteristic curve (ROC) was used to evaluate the diagnostic efficacy of ADC combined with CRP as a combined predictor for disease.Results:A total of 89 patients with ACOP were included, including 33 patients with DEACMP and 56 patients without DEACMP. There were no significant differences in gender, age, smoking, drinking, and underlying diseases (hypertension, coronary heart disease) between groups ( P>0.05). Logistic regression analysis showed that white blood cell count (WBC) ( OR=1.64, 95% CI: 1.19-2.26, P=0.003), CRP ( OR=1.22, 95% CI: 1.03-1.45, P=0.019) and ADC value of central semiovale white matter ( OR=0.99, 95% CI: 0.98-1.00, P=0.010) were associated with DEACMP in patients with ACOP. The ROC curve results showed that the area under the ROC of ADC combined with CRP in the center of semiovale was 0.765 (95% CI: 0.656-0.845), the specificity was 87.9%, the sensitivity was 23.2%, and the cut-off value was 3.5°. Conclusions:WBC, CRP and ADC value of central semiovale are independent factors for DEACMP. ADC value of central semiovale combined with CRP has more clinical value in the early diagnosis of DEACMP. For ACOP patients with DEACMP triggering factors, the diagnosis and treatment awareness of early screening of brain magnetic resonance imaging should be strengthened to avoid DEACMP.

Osteoporosis （OP） is a systemic metabolic bone disease. Amid population aging， OP has become a major health problem for the middle-aged and the elderly in China. Aging， iron load， and estrogen deficiency break the balance between oxidation and antioxidant systems， and the increase of reactive oxygen species mediates oxidative stress to damage DNA， lipids， proteins and other macromolecules， thus accelerating cell apoptosis and inducing OP， obesity， and neurodegenerative disorders. It has been found that oxidative stress is of great significance in the pathogenesis of OP. Oxidative stress regulates the signaling pathways， cytokines， and proteins related to the mesenchymal stem cells， osteoblasts， and osteoclasts， thereby weakening the osteogenic differentiation of mesenchymal stem cells， inhibiting osteoblast mineralization， and promoting the activation， proliferation， and maturation of osteoclasts. As a result， the dynamic imbalance between bone resorption and bone formation occurs， influencing bone remodeling and promoting the progression of OP. At the moment， anti-bone resorption drugs， bone formation-promoting drugs， and hormones are mainly used in clinical settings in western medicine. However， due to the long treatment cycle and the occurrence of serious gastrointestinal reactions， hypocalcemia， osteonecrosis， and others， patients show poor compliance and thus the effect is not as expected. Traditional Chinese medicine （TCM） demonstrates remarkable effect on OP attributing to the multi-pathway and multi-target characteristics. With low price and few adverse reactions， TCM is widely applied in clinical practice in comparison with western medicine. TCM has unique advantages in the treatment of OP by regulating oxidative stress. It exerts the therapeutic effect on OP by modulating different signaling pathways， providing new mindset for the treatment of this disease. Therefore， through literature research， this study summarized the research on mechanism of oxidative stress in OP and the treatment by TCM， which is expected to lay a foundation for further research.

Objective:To compare the clinical efficacy of anatomical reconstruction of coracoclavicular ligament at the original insertion point and clavicular hook plate fixation in the treatment of acromioclavicular joint dislocation.Methods:Retrospective analysis was made on the data of 67 patients with acromioclavicular joint dislocation who received surgical treatment in the Department of Orthopaedics of the First Affiliated Hospital of Nanjing Medical University from June 2015 to January 2021. According to the surgical method, they were divided into reconstruction group (using the technique of anatomical reconstruction of coracoclavicular ligament at the original insertion point) and hook plate group (using the clavicular hook plate). There were 37 cases in the reconstruction group, including 26 males and 11 females, aged 47.2±9.6 years (range, 18-65 years), 13 cases on the left and 24 cases on the right. Among the 37 patients, 8 were sports injuries, 14 were falls, 11 were traffic accidents, and 4 were external force injuries. The average time from injury to surgery was 8.3±2.3 days. There were 30 cases in the hook plate group, including 24 males and 6 females, aged 47.4±9.7 years (range, 18-67 years), 12 cases on the left and 18 cases on the right. Among the 30 patients, 7 were sports injuries, 11 were falls, 9 were traffic accidents, and 3 were external force injuries. The average time from injury to surgery was 7.9±2.6 days. The surgical time, incision length, intraoperative bleeding, hospital stay, postoperative coracoclavicular separation ratio, and postoperative complications were compared between the two groups. Constant-Murley score and visual analog scale (VAS) were used to assess the shoulder joint function and pain degree of patients.Results:Both groups of patients were followed up, with a follow-up time of 12.3±0.4 months for the reconstruction group and 12.2±0.5 months for the hook plate group. The operation time (105.8±10.0 min), incision length [12.0 (11.0, 13.0) cm] and hospitalization time (6.8±2.1 d) in the reconstruction group were longer than those in the hook plate group [48.3±4.9 min, 10.0 (10.0, 11.0) cm, and 5.5±2.7 d], while the intraoperative blood loss (75.1±3.9 ml) was less than that in the hook plate group (90.3±6.3 ml), the differences were statistically significant ( P<0.05). The VAS [4.0 (3.0, 5.0), 3.0 (3.0, 3.0), 2.0 (1.0, 2.0) points] and Constant-Murley score (65.4±4.5, 84.9±2.5, 90.1±2.5 points) of the reconstruction group at 3 days, 3 months, and 12 months after surgery were better than those of the hook plate group [5.0 (4.0, 5.0), 4.0 (4.0, 4.0), 3.0 (3.0, 4.0) and 56.9±3.5, 79.6±4.0, 86.8±2.4 points], the difference was statistically significant ( P<0.05). At the last follow-up, there was a statistically significant difference in the separation ratio of coracoclavicular distance between the reconstruction group (0.12±0.08) and the hook plate group 0.22±0.15 ( t=3.25, P=0.002). There was no significant difference ( Z=-0.52, P=0.605) in the separation ratio of acromioclavicular distance [0.16 (0.05, 0.25) and 0.16 (0.04, 0.40)]. In the hook plate group, 6 cases had shoulder joint foreign body sensation and 2 cases had acromioclavicular joint redislocation (both Rockwood type III). Because the shoulder joint function did not affect their daily life, neither patient underwent secondary surgery. And no case of acromioclavicular joint redislocation occurred in the reconstruction group. Conclusion:Compared with the clavicular hook plate fixation, anatomic reconstruction of coracoclavicular ligament at the original insertion point in the treatment of acromioclavicular joint dislocation can reduce the pain of the shoulder joint earlier, which has the characteristics of small trauma, good effect, and reduces the steps of internal fixation removal, and has good clinical curative effect.

Objective:To explore the prognostic risk factors of thymoma patients after resection, and establish a novel nomogram to predict progression free survival(PFS) of patients with thymoma.Methods:A retrospectively analysis was performed on clinicopathological datas of 267 cases of thymoma patients underwent thymoma resection in Beijing Tongren Hospital from January 2010 to December 2019. The univariate and multivariate Cox risk ratio models were used to analyze the related factors that might affect PFS, and the prediction nomogram of PFS after thymoma resection was established using the screened independent risk factors. Then the predictive ability of the model was evaluated. Results:The univariate analysis showed that age, type of surgery, completeness of resection, WHO histologic classification, TNM stage and postoperative adjuvant therapy were significantly correlated with PFS after thymoma resection( P<0.05). The multivariate analysis showed that only age and TNM stage were independent prognostic factors affecting PFS after thymoma resection( P<0.05). The concordance index( C- index) of the prediction model for the prognosis of thymoma patients established by this method was 0.866(95% CI: 0.809-0.923), which had remarkable predictive efficiency. Conclusion:The nomogram model is constructed and verified based on age and TNM stage, excluding the interference of other clinicopathological factors on prognosis assessment, and which is convenient for clinicians to quickly and individually evaluate the prognosis of patients after thymoma resection.

Claudin18.2(CLDN18.2)is a tight junction protein that is overexpressed in a variety of solid tumors such as gastrointestinal cancer and oesophageal cancer.It has been identified as a promising target and a potential biomarker to diagnose tumor,evaluate efficacy,and determine patient prognosis.TST001 is a recombinant humanized CLDN18.2 antibody that selectively binds to the extracellular loop of human Claudin18.2.In this study,we constructed a solid target radionuclide zirconium-89(89Zr)labled-TST001 to detect the expression of in the human stomach cancer BGC823CLDN18.2 cell lines.The[89Zr]Zr-des-ferrioxamine(DFO)-TST001 showed high radiochemical purity(RCP,＞99％)and specific activity(24.15±1.34 GBq/μmol),and was stable in 5％human serum albumin,and phosphate buffer saline(＞85％RCP at 96 h).The EC50 values of TST001 and DFO-TST001 were as high as 0.413±0.055 and 0.361±0.058 nM(P＞0.05),respectively.The radiotracer had a significantly higher average standard uptake values in CLDN18.2-positive tumors than in CLDN18.2-negative tumors(1.11±0.02 vs.0.49±0.03,P=0.0016)2 days post injection(p.i.).BGC823CLDN18.2 mice models showed high tumor/muscle ratios 96 h p.i.with[89Zr]Zr-DFO-TST001 was much higher than those of the other imaging groups.Immunohistochemistry results showed that BGC823CLDN18.2 tumors were highly positive(+++)for CLDN18.2,while those in the BGC823 group did not express CLDN18.2(-).The results of ex vivo biodistribution studies showed that there was a higher distribution in the BGC823CLDN18.2 tumor bearing mice(2.05±0.16％ID/g)than BGC823 mice(0.69±0.02％ID/g)and blocking group(0.72±0.02％ID/g).A dosimetry estimation study showed that the effective dose of[89Zr]Zr-DFO-TST001 was 0.0705 mSv/MBq,which is within the range of acceptable doses for nuclear medicine research.Taken together,these re-sults suggest that Good Manufacturing Practices produced by this immuno-positron emission tomog-raphy probe can detect CLDN18.2-overexpressing tumors.