Malignant Tumors

This study is a single-center observational investigation aimed at systematically exploring the key molecular features influencing the prognosis of malignant tumors by integrating multidimensional clinical information with multi-omics molecular data. The goal is to provide a critical scientific basis for constructing precise prognostic prediction models, identifying potential therapeutic targets, and optimizing clinical treatment strategies. The study plans to consecutively enroll adult patients with histologically confirmed malignant tumors who received antitumor therapy at our hospital between January 2017 and December 2025. Clinical data (including demographic characteristics, tumor pathology information, treatment histories, and survival follow-up data) will be systematically collected from electronic medical records. Additionally, tumor tissue or blood samples will be obtained from the patients for sequencing, staining, ELISA, drug sensitivity testing, and flow cytometry analysis to comprehensively characterize the genomic features, immune microenvironment, and cellular heterogeneity of the tumors.

For Phase I Dose Escalation Stage, to assess the safety and tolerability of LM-350 in patients with advanced solid tumors,determine the maximum tolerated dose (MTD) or optimal biological dose (OBD), and explore the relationship between the biomarkers and the anti-tumor activity of LM-350. For Phase II Dose Expansion Stage, to assess the preliminary anti-tumor activity of LM-350 in patients with advanced solid tumors.

This prospective, open-label Phase I/II trial evaluates a PET/CT-guided planning strategy for radioactive seed implantation therapy in malignant solid tumors. The approach integrates metabolic information from PET/CT into brachytherapy planning to improve the accuracy of biological target volume delineation, enhance dose coverage, and support biologically informed dose delivery. Eligible participants are assigned to one of three arms: conventional CT-guided implantation, PET/CT-guided standard-dose implantation, or PET/CT-guided biologically optimized implantation. All participants undergo image-guided treatment followed by post-implant dosimetric verification and standardized clinical follow-up. Primary endpoints include technical success rate, dosimetric superiority, and 6-month local control. Secondary endpoints include dosimetric indices (D90, V100, conformity index, homogeneity index), pain relief, quality of life (EORTC QLQ-C30), treatment-related adverse events (CTCAE v5.0), progression-free survival (PFS), failure-free survival (FFS), and overall survival (OS). Exploratory analyses will evaluate associations between baseline PET metabolic parameters (SUVmax, metabolic tumor volume) and clinical outcomes, assess the feasibility of SUV-guided dose painting, and compare the performance of tumor-specific tracers (such as PSMA and FAPI) with FDG for target delineation and treatment response prediction. The central hypothesis is that PET/CT-guided planning-particularly when incorporating biological dose optimization-will achieve superior dosimetric performance and improved local control and survival outcomes compared with conventional CT-guided implantation.

This prospective randomized trial evaluates the efficacy and safety of combining 125I seed interstitial brachytherapy with immune checkpoint inhibitor therapy in patients with primary, recurrent, or metastatic malignant tumors. Immunotherapy has become an important systemic treatment option, yet many patients experience limited benefit due to low tumor immunogenicity, insufficient T-cell infiltration, and an immunosuppressive tumor microenvironment. 125I seed brachytherapy provides continuous low-dose-rate radiation to the tumor, promoting antigen release, enhancing dendritic cell activation, and potentially converting immunologically "cold" tumors into more responsive "hot" lesions. Integrating localized radiation with systemic immunotherapy may improve tumor response, prolong progression-free survival, and reduce recurrence. Patients will be randomized 1:1 to receive 125I seed implantation plus immunotherapy or immunotherapy alone. The primary endpoints are objective response rate (ORR) and progression-free survival (PFS). Secondary endpoints include failure-free survival (FFS), overall survival (OS), disease control rate (DCR), duration of response (DoR), local control, recurrence rate, adverse events, and quality of life. Exploratory analyses will assess radiomics features, subgroup responses, and different patterns of recurrence. This study aims to determine whether adding 125I seed brachytherapy enhances the clinical benefits of immunotherapy across diverse malignant tumors.

The project's objective is to recruit patients with clinically confirmed or suspected small cell lung cancer, breast cancer, nasopharyngeal carcinoma and other tumours for 68Ga-FL-031 PET imaging and 18F-FDG PET imaging. The histopathology of biopsy or surgical specimens was taken as the final diagnostic criteria, and the presence or absence of tumour lesions was confirmed by the aforementioned imaging. The location and nature of the lesion, and the presence or absence of metastasis, were then judged. The objective was to analyse and clarify the diagnostic efficacy of 68Ga-FL-031 PET imaging for the aforementioned malignant tumours. The objective of this study is to analyse the correlation between the 68Ga-FL-031 PET imaging tumour tissue uptake value and the tumour tissue immunohistochemical staining SSTR2 target expression.

The goal of this observational study is to evaluate the impact of Immune Checkpoint Inhibitor (ICI) treatment on ovarian function and fertility, and to explore the role of gut microbiota in female cancer patients of reproductive age (18-38 years) receiving ICI therapy. The main questions it aims to answer are: Does ICI treatment alter serum hormone levels (FSH, LH, E2, P, AMH) associated with ovarian function and fertility? Are there differences in gut microbiota composition and metabolites between patients with different ovarian function and fertility outcomes after ICI treatment? What are the potential mechanisms by which gut microbiota influences ovarian function and fertility in patients receiving ICIs? Researchers will compare patients with preserved ovarian function versus those with impaired ovarian function after ICI treatment to identify differences in gut microbiota and metabolic profiles. Participants will: Provide blood samples (10 ml per collection) at enrollment and after each of the 6 treatment cycles for hormone level testing and potential future analyses. Provide stool samples at the same time points for gut microbiota metagenomic sequencing and metabolite analysis. Undergo regular clinical assessments and follow-ups as part of their standard ICI treatment.

In recent years, advances in protein post-translational modification (PTM) research have revealed histone succinylation as a novel epigenetic modification mechanism critically involved in tumor initiation, progression, and prognosis. Succinylation alters protein physicochemical properties and functions, thereby modulating cellular metabolism, proliferation, and apoptosis. Aberrant histone succinylation in tumor cells demonstrates significant correlations with tumor type, staging, and clinical outcomes, offering new avenues for early cancer diagnosis. This project utilizes blood serum samples to quantify histone succinylation levels through modification-specific antibody-based detection. Integrated with clinical data, this approach enables early, rapid, and accurate pan-cancer diagnosis, achieving tumor screening via a single-tube blood test. It represents a paradigm shift in precision oncology from "gene-driven" to "epigenetic-metabolic-driven" early detection.

The goal of this study is to evaluate the safety and efficacy of mRNA vaccine for the KRAS mutation malignant tumors.

For Phase I Dose Escalation Stage, to assess the safety and tolerability of LM-299 in patients with advanced solid tumors,determine the maximum tolerated dose (MTD) or optimal biological dose (OBD), and explorethe recommended dose for expansion (RDE) in patients with advanced solid tumours.. For Phase II Dose Expansion Stage, to assess the antitumor activity of LM-299 in patients with various advanced solid tumors.

This study was an open-label phase I study to evaluate the safety, pharmacokinetics, and antitumor activity of SSS59 as a single agent in patients with advanced malignancies.

The goal of this observational study aims to preliminarily evaluate the diagnostic efficacy of 99mTc-FDPH46 SPECT/CT in malignant solid tumors (compared to the pathological gold standard). The main questions it aims to answer are: * What is the diagnostic efficacy of 99mTc-FDPH46 in malignant solid tumors, compared to the pathological gold standard? * What is the biodistribution, tumor uptake and safety of 99mTc-FDPH46 SPECT/CT in patients with malignant solid tumors? Participant Will: • Patients with clinically suspected or diagnosed malignant solid tumors who are willing to undergo 99mTc-FDPH46 SPECT/CT examination and sign an informed consent form.

This study is to assess the safety and tolerability, obtain Maximum Tolerated Dose (MTD) and/or the recommended phase 2 dose (RP2D) of LM-101 as a single agent or in combination in patients with advanced malignant tumors