A Study to Investigate the Safety, Tolerability, Pharmacokinetic/Pharmacodynamic Characteristics and Food Effect of HGR4113 in Healthy Subjects

1. Study Objective: The objective of this study is to evaluate the safety, tolerability, pharmacokinetic/pharmacodynamic characteristics, and food effect of HGR4113 after single and multiple oral administration in healthy subjects. 2. Study Design and Plan: This study is a randomized, double-blind, placebo controlled, single and multiple dosing, dose-escalation phase 1 clinical trial. Volunteers who have been deemed eligible based on the inclusion/exclusion criteria will be given a random number. Each subject will be assigned to one of the dose groups in a 6:2 ratio to HGR4113 (active) or placebo. Subjects will be studied in a double-blind manner and will receive the investigational product per protocol. Dose will be escalated once safety data is collected up to the last pharmacokinetic blood collection timepoint and safety and tolerability has been deemed acceptable following the review of the Safety Review Committee. Assessments including vital signs, 12-lead ECG, clinical laboratory, reproductive hormones, physical examination, and monitoring of adverse events concomitant medications will be conducted to evaluate safety and tolerability. Blood will be collected to evaluate the pharmacokinetic/pharmacodynamic characteristics.