Aim and Objective – To compare the role of alternate-day fasting over standard medical management alone to reverse NASH.
Primary objective: The primary outcome measure is a reversal of NASH over a 24-week duration.
Secondary objectives: Improvement in the quality of life index, Reversal of stage of fibrosis, No progression of fibrosis, Reversal of fat content, Quality of life: cardiorespiratory performance, Anthropometry, Improvement in glycaemic status, Decreased liver fat content as measured by fibroscan, Change in bone mineral density as measured by DEXA scan, Change in faecal microbiota.
Methodology
Study population: This study will be carried out at the Department of Hepatology, Institute of Liver and Biliary Sciences. Patients with NASH attending the ILBS Delhi OPD will be screened for eligibility.
Study design: Open-label, parallel-group, randomized, controlled study. This study is a randomised controlled trial which is designed as per the CONSORT guideline. Patients will be divided into two groups, alternate-day fasting with standard medical management, and standard medical management alone. Subjects will be recruited from the hepatology OPD of the Institute of Liver and Biliary Sciences. New Delhi.
Study design: A randomized controlled trial. Two groups; group A-Alternate day fasting and Group B- Standard medical management
Study period: 1 year after IEC approval.
Inclusion criteria:
NASH patients, Age 18-65 years. BMI 25-40kg/m3, and CAP more than 290. Stable weight in the last 3 months prior to enrolling in the study(<5kg weight variation). Imaging showed steatotic liver disease, liver stiffness <14kPa measured by fibroscan. Histologically proven NASH/MASH, fibrosis up to F3. Subjects willing to participate in the study
Exclusion criteria:
· Liver stiffness >14kPa measured by fibroscan or Fibrosis >F3. Diabetes with HbA1c>8.5%. Patients with another co-existing active liver disease e.g. hepatitis B or C, alcoholic liver disease. Patients with cirrhosis, HCC, or other malignancy. Chronic kidney disease, cardiovascular disorders, uncontrolled hypertension. Chronic infections, chronic inflammatory diseases. Patients on weight loss medications e.g semaglutide. Pregnant or lactating women and those planning a pregnancy. A patient who is not willing to participate in the study, or failed to provide the consent
Sample size with justification: Assuming that reversal of the NASH in standard treatment is 20% and in the intervention arm it is 50% (that is 30% more than the SMT), with alpha error as 5% and power 80% we need to enrol 76 cases (38 in each). Further assuming a 15% drop outs rate we need to enrol 90 cases. 45 in each group, the allocation will be done randomly by block randomization method, taking block size 10. Considering the drop rate of 20% over the six months, we planned to recruit 36 patients on each arm.
Experimental design
Block randomization will be performed with a computer-generated random number sequence. An independent statistician will generate the allocation sequence, and the study coordinator will assign the subjects to a controlled dietary intervention trial for 24 weeks as the subjects enrolled. Subjects will be randomised using the stratified random sample to groups: group A) Intervention group, and group B) Control group.
Intervention:
Individuals with alternate-day fasting groups will be advised to pre-fixed meal intake to fulfil the 25% of the daily calorie requirement on fasting day(for 24 hours), and then ad libitum calorie intake on the feed day(24 hrs). The control group will be advised to consume 80% of the daily dietary requirement without any restrictions on lifestyle patterns. Mifflin equation to be used to calculate the daily calorie requirement. Feed and fast days will begin at midnight. Feeding times will be fixed. Intake of energy-free beverages e.g. tea, coffee, and sugar-free gums will be permitted. Participants will be ensured to consume plenty of water. Exercise for 150minutes in a week will be advised to the both groups. Exercise in ADF group will be enforced preferably on the feed days.
Monitoring and assessment:
Patients will be evaluated at the 2weeks, 4 weeks initially then every monthly. In the follow up anthropometric examination will be done at each visit. Liver function tests and fibroscan will be done at 3 and six months of the follow-up. Dietary follow up will be ensured by maintaining the daily food diary. A daily whatsapp reminder will be sent to the patients about the feed or fast day.
Statistical Analysis:
The results will be reported as counts and percentages for categorical variables, and as mean ± SD (range) for continuous normally distributed variables and median (interquartile range [IQR]) for ordinal categorical variables and for continuous non-normally distributed variables. The chi-square test will be used for cross-tabulations. Continuous variables will be compared between the groups by using the Student’s t-test or the Mann-Whitney test, depending on the data distribution.
Adverse effects:
The adverse effects will be classified as none, remote, possible, probable or not assessable based on the relation with the intervention.
Stopping rule of study:
The study will be stopped in case of life-threatening adverse event judged to be related to the protocol intervention at the department review meeting.
Expected outcome of the project:
Establishment of an effective treatment protocol for patients with NASH.
Ethical issues in the study and plans to address these issues:
We foresee no ethical issue in the current study as the protocol involves treating the ongoing morbid condition. The treatment involves home-based dietary intervention for the treatment of the patients. The study is easy to conduct and requires no extra intervention or cost burden to the patient.