Jul. 2 at 12:04 PM
$RIGL
July 1, 2025
Kissei Pharmaceutical Co., Ltd.
(Code 4547, Tokyo Stock Exchange Prime Market)
New Launch of TAVALISSE® for Chronic Idiopathic
Thrombocytopenic Purpura Treatment in South Korea
Kissei Pharmaceutical Co., Ltd. (Head Office: Matsumoto, Nagano, Japan; Chairman and CEO:
Mutsuo Kanzawa; “Kissei”) announced that its licensing partner, JW Pharmaceutical Corporation
(Head Office: The Republic of Korea, CEO: YS Shin; "JWP"), has launched the spleen tyrosine
kinase (SYK) inhibitor TAVALISSE® (fostamatinib disodium hexahydrate) for the treatment of
thrombocytopenia in adult patients with chronic idiopathic thrombocytopenic purpura (ITP) who
have had an insufficient response to a previous treatment in South Korea under the brand name
"TAVALISSE" on July 1, 2025.
and is indicated
TAVALISSE is an oral SYK inhibitor discovered by Rigel Pharmaceuticals, Inc. (Head Office: USA,
President and CEO, Raul Rodriguez; "Rigel").