Safety,PK/PD, Food Effect Study of Orally Administered HM71224 in Healthy Adult Male Volunteers

Summary

HM71224 is a potent small molecule inhibitor of Bruton's tyrosine kinase (BTK). BTK is a member of the Tec family of non-receptor protein tyrosine kinases. BTK is mostly expressed in hematopoietic cells such as B cells, mast cells and macrophages. BTK plays key roles in multiple cell signaling pathways including B-Cell Receptor (BCR) and Fc receptor (FcR) signaling cascades and is an essential mediator not only in B-cell dependent but also in myeloid cell dependent inflammatory arthritis. HM71224 has been selected as a novel therapeutic agent for the treatment of autoimmune diseases such as rheumatoid arthritis (RA). In view of the above, further development of HM71224 for the treatment of RA is warranted. In this first-in-man (FIM) study, a single and multiple dose escalation design will be employed, in which the primary objective is to evaluate the safety and tolerability of the compound. The biomarkers included as pharmacodynamic (PD) variables are chosen as they are indicators for any effects of HM71224 on the expected mode of action (pBTK, pPLCγ, and pERK).

Timeline

Start

2013-01

Primary completion

2014-11

Completion

2014-11

Publications

• Byun JY, Koh YT, Jang SY, Witcher JW, Chan JR, Pustilnik A, Daniels MJ, Kim YH, Suh KH, Linnik MD, Lee YM. Target modulation and pharmacokinetics/pharmacodynamics translation of the BTK inhibitor poseltinib for model-informed phase II dose selection. Sci Rep. 2021 Sep 21;11(1):18671. doi: 10.1038/s41598-021-98255-7.

Drugs

Indications