This multicenter, randomized, double-blind, placebo-controlled trial aims to evaluate the efficacy and safety of Jianpi Lishi Jiedu Granules in preventing postoperative recurrence of colorectal advanced adenoma. A total of 376 patients aged 18-80 years with endoscopically resected advanced adenoma and diagnosed with Spleen Deficiency and Dampness Toxin syndrome will be enrolled and randomly assigned to receive either Jianpi Lishi Jiedu Granules or placebo for 3 months. The primary endpoint is the adenoma recurrence rate at 1 year post-treatment, assessed by colonoscopy and pathological examination. Secondary endpoints include malignant transformation rate, TCM syndrome improvement, quality of life, gastrointestinal symptoms, and exploratory analyses of gut microbiota and inflammatory cytokines.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
DOUBLE
Enrollment
376
The intervention is orally administered as one sachet of Jianpi Lishi Jiedu Granules, twice daily (1 hour after breakfast and dinner), for a treatment course of 3 months. All participants will begin medication after resuming oral intake following surgery for colorectal advanced adenoma (≥2 weeks post-procedure).
Participants in the control group will receive placebo granules orally (with the same specifications, appearance, dosage, and administration as the experimental group) for a treatment course of 3 months. All participants will begin medication after resuming oral feeding following surgery for colorectal advanced adenoma (≥2 weeks post-procedure).
recurrence rate of colorectal advanced adenomas
Time frame: At 6 months and 1 year after treatment initiation
Number of Participants with Malignant Transformation and Interval Cancer
Time frame: At 6 months and 1 year after treatment initiation
Quality of Life (KPS Scale)
The Karnofsky Performance Status (KPS) Scale is a standardized tool used to assess the functional status and quality of life of patients. The scale ranges from 0 to 100, with higher scores indicating better quality of life. A score of 100 represents normal function with no complaints or evidence of disease, while a score of 0 indicates death. The interpretation of score changes is categorized as follows: significant improvement (KPS score increase of \>20 points), improvement (score increase of 10-20 points), stability (score change of \<10 points increase or decrease), and decline (score decrease of \>10 points). The score is rated by the investigator based on the patient's clinical status at each time point.
Time frame: Before treatment, 3 months after treatment, 6 months after treatment, 1 year after treatment
Total Score of the Gastrointestinal Symptom Rating Scale (GSRS)
The Gastrointestinal Symptom Rating Scale (GSRS) is a 15-item instrument used to assess gastrointestinal symptoms over the past week. The scale covers five symptom clusters: abdominal pain, reflux, indigestion, diarrhea, and constipation. Each item is rated on a scale from 0 to 3, where 0 indicates no symptoms and 3 indicates severe symptoms. The total score ranges from 0 to 45, with higher scores indicating worse gastrointestinal symptoms (poorer outcome). The total score is calculated by summing the scores of all 15 items. The scale is administered by the investigator through patient interview at each specified time point.
Time frame: Before treatment, 3 months after treatment, 6 months after treatment, 1 year after treatment
Total Score of the Traditional Chinese Medicine (TCM) Syndrome Severity Scale
The TCM Syndrome Severity Scale is used to evaluate the severity of Spleen Deficiency and Dampness Toxin syndrome. The scale assesses five primary symptoms (abdominal distension and pain, constipation, diarrhea, poor appetite, dry mouth with sticky sensation) and four secondary symptoms (fatigue and laziness to speak, heavy sensation and drowsiness, nausea and vomiting tendency, borborygmus). Each symptom is rated on a 4-point scale: 0 (none), 1 (mild), 3 (moderate), and 5 (severe). The total score ranges from 0 to 45, with higher scores indicating more severe TCM syndrome symptoms (worse outcome). The total score is calculated by summing the scores of all nine items. The scale is administered by the investigator through patient interview and clinical assessment at each specified time point.
Time frame: Before treatment, 3 months after treatment, 6 months after treatment, 1 year after treatment
Number of Participants with Renal Impairment (Defined as Serum Creatinine Increase ≥50% from Baseline)
Renal impairment is defined as an increase in serum creatinine level of ≥50% from baseline. Serum creatinine is measured through routine biochemical testing, with units reported in μmol/L or mg/dL. Fasting venous blood samples are collected at baseline (before treatment), 3 months, 6 months, and 1 year after treatment. A participant is considered to have experienced renal impairment if the criterion is met at any of the scheduled visit time points. The final data will be reported as the number and percentage of participants who develop renal impairment.
Time frame: Baseline (before treatment), 3 months, 6 months, and 1 year after treatment
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