Solid Tumor Malignancy

The ARC Registry is a large-scale, multi-site, prospective, observational registry. All patients with a solid tumor malignancy who receive Ataraxis testing as part of routine clinical care are eligible for enrollment, which will link Ataraxis test results with short- and long-term patient outcomes to evaluate the real-world performance and clinical utility of Ataraxis tests. The ARC Registry utilizes an adaptable design, where additional Sponsor-led analyses and investigator-initiated ancillary studies can be added after the initial study is opened.

Stage 1 (Safety study for 68Ga-NRT6020 Injection): The goal of this clinical trial stage is to evaluate the safety of 68Ga-NRT6020 Injection in participants with advanced solid tumors. The study will also assess the biodistribution, radiation dosimetry, imaging profile, and pharmacokinetics of the drug. Additionally, researchers aim to investigate how consistent the PET/CT imaging results of 68Ga-NRT6020 are with 18F-FDG PET/CT imaging and FAP immunohistochemistry (IHC) results. Stage 2 (Safety and tolerability study for 177Lu-NRT6020 Injection): This stage focuses on evaluating the safety and tolerability of 177Lu-NRT6020 Injection in FAP-positive participants with advanced solid tumors. Researchers will also assess the safety of 68Ga-NRT6020 Injection in this population. The study will evaluate the biodistribution, radiation dosimetry, pharmacokinetics, and preliminary efficacy of 177Lu-NRT6020 Injection. Additionally, the imaging profile of 68Ga-NRT6020 and its consistency with other imaging techniques will be further investigated. Stage 3 (Preliminary efficacy study for 68Ga/177Lu-NRT6020 Injection): The objective of this stage is to evaluate the safety of 177Lu-NRT6020 Injection and 68Ga-NRT6020 Injection in FAP-positive participants with advanced solid tumors, as well as to determine the recommended phase 2 dose (RP2D) of 177Lu-NRT6020 Injection. The study will also assess the preliminary efficacy, biodistribution, radiation dosimetry, and pharmacokinetics of the drugs. Furthermore, researchers will investigate the imaging profile of 68Ga-NRT6020 and its consistency with other imaging techniques.

The main purpose To evaluate the safety, tolerability, and pharmacokinetic characteristics of SIBP-A18 and determine the maximum tolerable dose (MTD) and phase II recommended dose (RP2D). A secondary purpose To preliminarily evaluate the anti-tumor efficacy of SIBP-A18. Evaluate the effect of SIBP-A18 injection on Q to T interval/Corrected QT interval (QT/QTc interval) in participants with advanced solid tumors

This study is designed to collect long-term safety and survival data from participants previously treated in an eligible Century-sponsored index trial. This is an observational study, and the elements of the study design allow for important follow-up for safety, survival, and the continued evaluation of any late adverse events (AEs) that may appear after treatment with such cellular products. Additionally, collection of persistence data from participants will support the identification of any long-term risks or late AEs that may be causally related to treatment with such cellular products.

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.