Efficacy of IST Combined With TPO-RA in the Treatment of AA and Establishment of a Recurrence Prediction System

Overview

In this study, investigators intend to prospectively study treatment-naive AA patients (including SAA and NSAA) who are non-transplant candidates in northern China. Patients with SAA receive ATG+CsA+Herombopag, and patients with NSAA receive CsA+ Herombopag. Investigators explored possible indicators of participants' predictive efficacy and built predictive models. After the participants achieved response, they used a tapering regimen, observed relapse and clonal evolution, and developed a predictive model of relapse.

1\) Patients in the SAA group: CsA: 3-5mg/kg/day, monitor the trough concentration every month, and maintain the trough concentration at 100-200ng/ml. ATG: rabbit anti-thymocyte immunoglobulin (r-ATG) 3mg/kg/d×5 days, or porcine anti-lymphocyte immunoglobulin ((p-ATG) 25mg/kg/d×5 days; TPO-RA: Herombopag starts at 7.5 mg qd, monitor the blood picture every 2 weeks, if the effect is not good, add 1 tablet every 2 weeks, up to 6 tablets (15 mg) qd. Patients in the NSAA group: CsA: 3-5mg/kg/day, monitor the trough concentration every month, and maintain the trough concentration at 100-200ng/ml. TPO-RA: start with 7.5mg qd of Herombopag, monitor the blood picture every 2 weeks, if the effect is not good, add 1 tablet every 2 weeks, up to 6 tablets (15mg) qd. (2) Those who are effective after 6 months of treatment continue to receive sufficient CsA treatment for at least 1.5 years, and then slowly reduce the dose until the end of the reduction. Those who fail to withdraw from the clinical trial. (3) Participants who achieve CR or PR after treatment, but when the curative effect does not increase after 3 months of maintenance treatment, start to reduce the dose of Herombopag, and reduce one tablet every 3 months until the reduction stops. If recurrence occurs, recover Up to the last dose or even increase the dose, after reaching the best curative effect, reduce one tablet every 3 months until the reduction stops, and those who cannot recover are defined as relapse.