Clinical Research Directory

ADC and SBRT for Recurrent/Metastatic Salivary Gland Carcinoma

This is a single-arm, single-center, exploratory clinical study. The study plans to enroll patients with recurrent or metastatic head and neck salivary gland carcinoma (HN-SGC) . The trial comprises two cohorts: Cohort 1 (adenoid cystic carcinoma, ACC) and Cohort 2 (non-ACC SGC). Patients in Cohort 1 will initially receive MRG003, an EGFR-targeted antibody-drug conjugate (ADC). Patients in Cohort 2 will initially receive either MRG003 (EGFR-ADC) or a TROP2-targeted ADC. The selection between these two ADC therapies for Cohort 2 will be determined by the investigator based on the expression levels of specific tumor surface receptors. Tumor response will be assessed by imaging every 6 weeks (±7 days). Subjects who are assessed as having stable disease (SD) on two consecutive evaluations or who develop oligometastatic progression will receive stereotactic body radiation therapy (SBRT). Following SBRT, maintenance therapy with the original ADC will be continued. Treatment discontinuation will be permitted due to disease progression, death, intolerable toxicity, withdrawal of consent, initiation of new anti-tumor therapy, or other protocol-specified reasons, whichever occurs first. After treatment completion, all subjects will enter a post-treatment phase for safety visits and survival follow-up. For subjects who discontinue treatment for reasons other than disease progression or death, tumor progression follow-up will also be conducted during the post-treatment period.

A Multi-omics Approach to Disclose Progression and Underlying Biology of Head and Neck Adenoid Cystic Carcinoma

The goal of this observational study is to better understand why some people with metastatic adenoid cystic carcinoma (ACC) of the head and neck have slow-growing disease while others have faster-growing or more aggressive disease. Researchers want to learn how the biology of the tumor relates to each person's clinical risk group, which is based on a published prediction tool (a nomogram). The main question the study aims to answer is: Do people in the high-risk and low-risk groups have different biological tumor types (called ACC-I and ACC-II) when their primary tumor is tested? The study will also look at other important questions, such as: * Do metastatic tumors show the same biological type as the original tumor? * Do biological types differ based on where metastases grow or how early or late they appear? * Are biological types linked to how well systemic treatments work? * Can blood tests (including DNA fragments or small RNA molecules in the blood) show the same tumor biology and help track how the cancer changes over time? Participants will: * Allow researchers to study samples of tumor tissue taken in the past during standard care. * Give blood samples at study entry and then every 6 months for up to 2 years. * Continue all medical treatments and follow-up visits as decided by their own care team. * Receive no study treatment; this study only collects information and samples. About 114 adults with metastatic ACC of the head and neck will join the study. People with only local or regional recurrence (without metastases) or those whose primary tumor started outside the head and neck cannot take part. The information gathered may help researchers understand why ACC behaves differently from person to person, identify new biological markers in blood, and support future personalized treatment strategies for people with metastatic ACC.