Clinical trials

The goal of this clinical study is to learn whether oral histidine supplementation may be safely used to support antitumor immune function during standard colorectal cancer treatment. Participants with colorectal cancer in the supplementation group will: Take 2g oral histidine once daily during standard colorectal cancer treatment; Provide blood samples before and after supplementation; Attend regular follow-up visits for laboratory tests, safety assessment, and treatment evaluation.

This observational study aims to investigate the role of histidine and its transporter SLC15A3 in modulating the sensitivity of colorectal cancer to immunotherapy. By analyzing the expression of SLC15A3 in tumor/normal colonic tissues from patients with colorectal cancer and assessing serum histidine metabolic levels, the study seeks to identify potential targets associated with therapeutic resistance and explore possible intervention strategies to improve immune checkpoint blockade treatment efficacy.

Berberine hydrochloride is a conventional component in Chinese medicine. In recent years, anticancer activity of berberine hydrochloride have been explored. The aim of this study is to investigate the effect of berberine hydrochloride on the human gut microbiome.