There are about 36818 clinical studies being (or have been) conducted in China. The country of the clinical trial is determined by the location of where the clinical research is being studied. Most studies are often held in multiple locations & countries.
In this study, the investigators collected data with the SEER*Stat software version 8.4.1 (accession number: 20377-Nov2021). The patients with confirmed diagnoses of CRC (site code C18.0-20.9 and C26.0) between 2004 and 2013 were retrieved from the Surveillance, Epidemiology, and End Results (SEER) database. Due to the significant disparity in the number of cancer survivors with various prior cancer types among newly diagnosed CRC patients, the investigators utilized the International Classification of Diseases for Oncology, 3rd edition (ICD-O-3) Site Recode to identify 10 common previous cancer sites, including the colorectum, prostate, breast, uterus, bladder, skin, lung, kidney, thyroid, and stomach. CRC patients with a prior history of cancer originated from one of the 10 sites and surgical CRC patients without a prior history of cancer were enrolled in this study. The exclusion criteria were as follows: (1) Patients with more than one cancer in the past; (2) The patient's age at diagnosis was <18 years old; (3) Patients with incomplete survival data and follow-up information; (4) Patients only had autopsy or death certificate records. The primary outcomes of this study were overall survival (OS) and cancer-specific survival (CSS). OS was defined as the time from diagnosis to date of death（patients who were still alive at the end of follow-up were considered as censored data. CSS was defined as the time from diagnosis to date of death caused by CRC (patients who deaths from other causes or still alive at the end of follow-up were considered as censored data). The investigators set December 31, 2018, as the cut-off date for follow-up to ensure that all included cases (diagnosed in 2004-2013) were followed for at least 5 years. Based on prior cancer history, the surgical cases were categorized into two groups: 'Non-prior cancer history' and 'Prior cancer history.' The 'Prior cancer history' group was further subcategorized by the type of prior cancer, including colorectum, prostate, breast, uterus, bladder, skin, lung, kidney, thyroid and stomach. The bias between different Prior cancer history group and Non-prior cancer history group was minimized by Propensity Score Matching (PSM), and the Kaplan-Meier method and log-rank tests were used to compare OS and CSS differences. And then, a multivariate Cox proportional hazards model was performed to estimate the hazard ratios (HR) and 95% confidence interval (CI) to analyze whether different types of prior cancer history impacted the OS and CSS in patients who underwent surgery for spCRC independently. Common demographic and clinicopathological data, including age at diagnosis of spCRC, sex, race, marital status, tumor location of spCRC, pathologic grade of spCRC, TNM stage of spCRC (0-I, II-III, IV and unknown) and chemotherapy status were entered as covariates. Kaplan-Meier curves were also constructed according to the time since first cancer diagnosis (latency), age diagnosed with spCRC, and spCRC stage. Further analysis was performed to determine the impact of surgery on survival of spCRC patients with different type of prior cancer history. The investigators divided patients into surgical and non-surgical groups based on whether surgery was performed, and then assessed the effect of surgery on survival using the propensity score-adjusted Kaplan-Meier method. In this study, the baseline characteristics of patients were compared using Chi-square test and Fisher's exact test. A one-to-one propensity score matching (PSM) was performed to reduce the selection bias of the two groups of baseline variables. When performing one-to-one propensity score matching between the prior cancer history group and the non-prior cancer history group, the investigators chose a caliper of 0.2. However, the investigators opted for different calipers when matching the surgical and non-surgical groups because the investigators believe that patients with different prior cancers were in entirely different situations. A two-sided probability value of P ≤ 0.05 was considered statistically significant. R software (version 4.2.3) was used for all statistical analysis.
This study was conducted in a randomized, double-blind, placebo-controlled design to evaluate the efficacy and safety of Genakumab injection in the treatment of CTD-ILD including Rheumatoid Arthritis associated Interstitial Lung Disease (RA-ILD) and Systemic Sclerosis associated Interstitial Lung Disease (SSc-ILD)
This is a prospective multicenter study with patients with delayed dysphagia after radiotherapy for NPC. Patients enrolled are randomly divided equally into the observation group and the control group. All patients receive conventional care, and the observation group received IOE while the control group received NGT for enteral nutrition support. Baseline information (demographics, medical history, etc.), nutritional status at admission and after treatment, depression, dysphagia, and quality of life (QOL) after treatment as well as adverse events are compared.
This study aims to provide a basis for further clinical development of CN201.
The purpose of this study is to prospectively evaluate the safety and effectiveness of the Amplatzer Amulet LAA occluder in a Chinese patient population indicated for use of this device.
The purpose of this study is to evaluate the efficiency and toxicity of adjuvant hypofractionation radiotherapy for thymic epithelial tumours after complete resection.
Our aim was to identify optimal incision sites for LVA in extremity lymphedema that would result in the most effective drainage effect for reducing limb edema and enhancing patients' quality of life.
The goal of this clinical trial is to learn about Drug loaded microspheres for bronchial artery chemoembolization (DEB-BACE) combined with anlotinib and adebelimumab in patients with advanced NSCLC after second-line treatment. The main question it aims to answer is: The efficacy and safety of Drug Loading Beads Bronchial Arterial Chemoembolization (DEB-BACE) combined with Anlotinib and Adebelimumab in the third line treatment of advanced NSCLC. Participants will receive DEB-BACE treatment, rest for 1 week and then undergo 1 cycle of treatment with combination of Anlotinib and Adebelimumab. With a maximum of 4 DEB-BACE treatments depending on the therapeutic effect, followed by continued treatment with Anlotinib and Adebelimumab.
This is a Phase I study to evaluate the safety, tolerability, and efficacy of TQB2922 for injection in subjects with advanced cancers
A Placebo control, Randomized, Double-blind, Multicenter Phase IV study to investigate the efficacy and safety of Huazhi Rougan granule in the treatment of non-alcoholic simple fatty liver (damp-heat obstruction syndrome: Shi-Re-Zhong-Zu Zheng)