A Study to Estimate Effect of Formulation and Food on Relative Bioavailability of HRS-6209 in Healthy Participants

A Single-Center, Single-Dose, Randomized, Open-Label, Three-Period, Three-Sequence, Crossover Study to Evaluate the Oral Relative Bioavailability of Old and New Formulations of HRS-6209 Capsules and the Effect of Food in Healthy Chinese Participants

This is a phase 1, randomised, open-label, three-way, three-period, crossover relative bioavailability study to assess the pharmacokinetics of HRS-6209 capsules (old and new formulation) in healthy participants. The effect of high-fat food on the pharmacokinetics of HRS-6209 in new formulation will also be evaluated. A total of 21 healthy participants will be randomised to receive a single oral dose of HRS-6209 in three treatment periods: old formulation (fasted); new formulation (fasted); new formulation (fasted).

Study Overview

• Status: Active, not recruiting
• Conditions: Breast Cancer
• Intervention / Treatment: Drug: HRS-6209 Capsule (old formulation); Drug: HRS-6209 Capsule (new formulation)

• Study Type: Interventional
• Enrollment (Actual): 21
• Phase: Phase 1

Contacts and Locations

Study Locations

• China
  • Fujian
    • Fuzhou, Fujian, China, 350001
      • Fuzhou University Affiliated Provincial Hospital

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult
• Accepts Healthy Volunteers: Yes

Description

Inclusion Criteria:

1. Healthy men and women aged 18 to 50 years old at informed consent signing.
2. Male body weight ≥ 50 kg, female ≥ 45 kg; BMI 19 to 26 kg/m² at screening and baseline.
3. Have no clinically significant abnormalities at screening and baseline.
4. Fertile females and males with fertile female partners: effective contraception 2 weeks before consent, and sustained until 6 months after the last dose (abstinence or highly effective contraception); no sperm/egg donation.

Exclusion Criteria:

1. Current or history of clinically significant disorders of any major system (urinary, circulatory, endocrine, nervous, digestive, respiratory, hematologic, immune, psychiatric, metabolic, etc.) or any other condition that may interfere with study results per investigator judgment.
2. History of epilepsy, including febrile seizures in childhood, loss of consciousness, transient ischemic attack, or any condition predisposing to seizures (e.g., cerebrovascular disease, brain injury, stroke, brain cancer).
3. Clinically significant acute illness within 1 month prior to screening, including fever or febrile symptoms, viral, bacterial (including upper respiratory tract infection), or non-cutaneous fungal infections.
4. Any surgery within 6 months prior to study, or planned surgery during study period; prior surgery affecting gastrointestinal absorption (including gastrectomy, bowel resection, bariatric surgery) or affecting liver function.
5. Positive for anti-HCV, anti-HIV, HBsAg, or syphilis antibodies.
6. Blood donation or loss ≥ 400 mL within 3 months, or ≥ 200 mL within 1 month prior to screening; blood transfusion or use of blood products within 3 months prior to screening.
7. Long-term use (> 7 consecutive days) of hepatotoxic drugs within 6 months; use of any drug affecting liver metabolism within 1 month prior to first dose; use of other drugs (prescription, OTC, herbal, vitamins, calcium, etc.) within 14 days prior to first dose, other than those affecting liver metabolism.
8. Participation in another clinical trial with investigational drug within 3 months; vaccination within 3 months prior to screening or planned during study.
9. History of drug abuse/dependence; positive urine drug screen at screening.
10. History of heavy smoking (average ≥ 5 cigarettes/day) within 3 months prior to screening; inability to abstain from any tobacco products during study; positive smoke screen.
11. Alcoholism (average daily intake exceeding: > 14 units/week; 1 unit = 285 mL beer, 25 mL spirits, or 100 mL wine); positive alcohol screen; inability to abstain from alcohol during study.
12. Special dietary requirements or inability to comply with standardized meals.
13. Dysphagia, difficulty with venous blood collection, or inability to tolerate intensive blood sampling.
14. Other conditions that, in the investigator's judgment, make the participant unsuitable for the study.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Crossover Assignment
• Masking: None (Open Label)

Number of Arms

3

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Participants receiving treatment sequence A+C+B; Treatment sequence A = HRS-6209 capsule old formulation given in fasted state; Treatment sequence B = HRS-6209 capsule new formulation given in fasted state; Treatment sequence C = HRS-6209 capsule new formulation given in fed state.	Drug: HRS-6209 Capsule (old formulation); Oral administration after fasting.; Drug: HRS-6209 Capsule (new formulation); Oral administration after fasting/high-fat meal.
Experimental: Participants receiving treatment sequence C+B+A; Treatment sequence A = HRS-6209 capsule old formulation given in fasted state; Treatment sequence B = HRS-6209 capsule new formulation given in fasted state; Treatment sequence C = HRS-6209 capsule new formulation given in fed state.	Drug: HRS-6209 Capsule (old formulation); Oral administration after fasting.; Drug: HRS-6209 Capsule (new formulation); Oral administration after fasting/high-fat meal.
Experimental: Participants receiving treatment sequence B+A+C; Treatment sequence A = HRS-6209 capsule old formulation given in fasted state; Treatment sequence B = HRS-6209 capsule new formulation given in fasted state; Treatment sequence C = HRS-6209 capsule new formulation given in fed state.	Drug: HRS-6209 Capsule (old formulation); Oral administration after fasting.; Drug: HRS-6209 Capsule (new formulation); Oral administration after fasting/high-fat meal.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Area under the concentration time curve (AUC)	pharmacokinetics (PK) parameter of HRS-6209.	Day 1 - Day 9.
Maximum Plasma Concentration (Cmax)	pharmacokinetics (PK) parameter of HRS-6209.	Day 1 - Day 9.

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Incidence and severity of adverse events / serious adverse events (AEs / SAEs)	Safety assessment, graded as per CTCAE 6.0.	Up to 1 month.

Collaborators and Investigators

• Sponsor: Jiangsu HengRui Medicine Co., Ltd.

Study record dates

Study Major Dates

• Study Start (Actual): June 8, 2026
• Primary Completion (Estimated): September 1, 2026
• Study Completion (Estimated): September 1, 2026

Study Registration Dates

• First Submitted: May 20, 2026
• First Submitted That Met QC Criteria: May 20, 2026
• First Posted (Actual): May 27, 2026

Study Record Updates

• Last Update Posted (Actual): August 25, 2026
• Last Update Submitted That Met QC Criteria: August 24, 2026
• Last Verified: August 1, 2026

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Neoplasms by Site; Neoplasms; Skin Diseases; Breast Diseases; Skin and Connective Tissue Diseases; Breast Neoplasms
• Other Study ID Numbers: HRS-6209-102

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: UNDECIDED

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No