Qian Chen,1,2 Chengyin Yu,1,2 Qingqing Wu,1,2 Rong Song,1,2 Ye Liu,1,2 Sheng Feng,3 Chen Yu,1,2 Jingying Jia1,2 

1Center Laboratory, Shanghai Xuhui Central Hospital, Shanghai, People’s Republic of China; 2Shanghai Engineering Research Center of Phase I Clinical Research & Quality Consistency Evaluation for Drugs, Shanghai, People’s Republic of China; 3Jiangsu Hengrui Pharmaceuticals Co., Ltd, Lianyungang, Jiangsu, People’s Republic of China

Correspondence: Jingying Jia, Center Laboratory, Shanghai Xuhui Central Hospital, No. 966, Huaihai Road (M), Shanghai, People’s Republic of China, Tel/Fax +86-21-54030254, Email jyjia@shxh-centerlab.com

Purpose: Henagliflozin is an original, selective sodium-glucose cotransporter 2 (SGLT2) inhibitor. Hydrochlorothiazide (HCTZ) is a common anti-hypertensive drug. This study aimed to evaluate the potential interaction between henagliflozin and HCTZ.
Methods: This was a single-arm, open-label, multi-dose, three-period study that was conducted in healthy Chinese volunteers. Twelve subjects were treated in three periods, period 1: 25 mg HCTZ for four days, period 2: 10 mg henagliflozin for four days and period 3: 25 mg HCTZ + 10 mg henagliflozin for four days. Blood samples and urine samples were collected before and up to 24 hours after drug administrations on day 4, day 10 and day 14. The plasma concentrations of henagliflozin and HCTZ were analyzed using LC-MS/MS. The urine samples were collected for pharmacodynamic glucose and electrolyte analyses. Tolerability was also evaluated.
Results: The 90% CI of the ratio of geometric means (combination: monotherapy) for AUCτ,ss of henagliflozin and HCTZ was within the bioequivalence interval of 0.80– 1.25. For henagliflozin, co-administration increased Css, max by 24.32% and the 90% CI of the GMR was (108.34%, 142.65%), and the 24-hour urine volume and glucose excretion decreased by 0.43% and 19.6%, respectively. For HCTZ, co-administration decreased Css, max by 19.41% and the 90% CI of the GMR was (71.60%, 90.72%), and the 24-hour urine volume and urinary calcium, potassium, phosphorus, chloride, and sodium excretion decreased by 11.7%, 20.8%, 11.8%, 11.9%, 22.0% and 15.5%, respectively. All subjects (12/12) reported adverse events (AEs), but the majority of theses AEs were mild and no serious AEs were reported.
Conclusion: Although Css,max was affected by the combination of henagliflozin and HCTZ, there was no clinically meaningful safety interaction between them. Given these results, coadministration of HCTZ should not require any adaptation of henagliflozin dosing.
Trial Registration: ClinicalTrials.gov NCT06083116.

Keywords: henagliflozin, drug-drug interaction, hydrochlorothiazide, pharmacokinetics, tolerability, pharmacodynamics, selective sodium-glucose cotransporter 2